CN111391450A - High-elasticity PE protective film and production process thereof - Google Patents

High-elasticity PE protective film and production process thereof Download PDF

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Publication number
CN111391450A
CN111391450A CN202010238393.5A CN202010238393A CN111391450A CN 111391450 A CN111391450 A CN 111391450A CN 202010238393 A CN202010238393 A CN 202010238393A CN 111391450 A CN111391450 A CN 111391450A
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China
Prior art keywords
parts
extrusion
rotating shaft
mixture
protective layer
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CN202010238393.5A
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Chinese (zh)
Inventor
王跃杰
葛振宗
孙自权
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Anhui Jie Cheng Packaging Products Co ltd
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Anhui Jie Cheng Packaging Products Co ltd
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Priority to CN202010238393.5A priority Critical patent/CN111391450A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2274/00—Thermoplastic elastomer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/101—Esters; Ether-esters of monocarboxylic acids
    • C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
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    • C08K5/00—Use of organic ingredients
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  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a high-elasticity PE protective film and a production process thereof, wherein the protective film comprises a base film layer and protective layers which are bonded on two sides of the base film layer, and the base film layer is prepared from the following raw materials in parts by weight: 300 parts of polyethylene 200-one, 16-25 parts of modified silicon carbide, 2-4 parts of silicic acid polymer powder, 5-8 parts of dispersing agent, 30-45 parts of polyvinyl alcohol, 12-21 parts of glyceryl triacetate, 6-12 parts of dioctyl phthalate, 18-32 parts of diethylene glycol and 40-68 parts of deionized water.

Description

High-elasticity PE protective film and production process thereof
Technical Field
The invention relates to the technical field of polyethylene protective films, in particular to a high-elasticity PE protective film and a production process thereof.
Background
The protective film is a film material with a protection function on other materials, and is usually formed by processing a polyolefin plastic film or kraft paper serving as a base material by a special method and taking rubber or acrylate resin as a pressure-sensitive adhesive, and is adhered to the surface of a protected material such as a metal plate, a plastic plate, stone, wood, glass and the like to protect the protected material from being corroded by harmful gas and microorganisms in the processes of manufacturing, transporting, storing and processing, so as to prevent dust pollution and mechanical scratches.
The publication number is: the patent of CN110256978A discloses a polyethylene protective film with heat resistance and tear resistance, which, compared with the present application, cannot solve the problems proposed in the present application: the existing polyethylene protective film is poor in elastic effect, damage of the protective film is easily caused when the protective film is stressed, so that the protective effect is influenced, the structure of an extruder is complex when the film is produced, the use and operation are complex, and the extrusion production efficiency of the protective film is influenced.
Disclosure of Invention
The invention aims to provide a high-elasticity PE protective film and a production process thereof.
The purpose of the invention can be realized by the following technical scheme:
the high-elasticity PE protective film comprises a base film layer and protective layers bonded to two sides of the base film layer, wherein the base film layer is prepared from the following raw materials in parts by weight: 300 parts of polyethylene 200-one, 16-25 parts of modified silicon carbide, 2-4 parts of silicic acid polymer powder, 5-8 parts of dispersing agent, 30-45 parts of polyvinyl alcohol, 12-21 parts of glyceryl triacetate, 6-12 parts of dioctyl phthalate, 18-32 parts of diethylene glycol and 40-68 parts of deionized water;
the protective layer is prepared from the following raw materials in parts by weight: 30-50 parts of low-density polyethylene, 54-72 parts of linear low-density polyethylene, 5-12 parts of metallocene linear low-density polyethylene and 40-56 parts of thermoplastic polyurethane elastomer;
the preparation method of the protective layer comprises the following steps:
s11: adding the raw material components into a mixer according to the weight ratio, and stirring to form a protective layer mixture;
s12: the method comprises the steps of putting a mixture of the protective layer into an extruder for extrusion, putting the mixture of the protective layer into a feed hopper, sealing the feed hopper by a cover plate, heating the extruded barrel by an electric heating band-pass circuit, detecting the temperature of the extruded barrel by a temperature-sensing probe by a temperature controller, controlling the temperature of the extruded barrel by controlling the electric heating band, driving a driving sprocket by the driving motor, driving a driven sprocket by the driving sprocket to rotate by a chain, driving a first rotating shaft to rotate under the action of the driven sprocket, driving the mixture to move by a spiral blade connected to the first rotating shaft in a rotating manner, stirring and mixing the mixture in the moving process of the mixture, heating the mixture by the electric heating band, moving the mixture towards an extrusion disc under the stirring of the spiral blade, extruding the mixture through extrusion holes arranged on the extrusion disc, and rotating a second rotating shaft along with the first rotating shaft, the second rotating shaft rotates to drive the rotating seat to rotate, and the extruded protective layer melting material is cut by a cutting knife arranged on the rotating seat;
s13: and blowing the melt plastic film to a cooling roller by the extruded protective layer through an air knife, and cooling and shaping the melt plastic film through the cooling roller to form a protective layer film.
A production process of a high-elasticity PE protective film specifically comprises the following steps:
s21: preparing a base film layer, namely selecting raw materials required by the preparation of the base film layer according to the weight components, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a base film layer mixture;
s22: the base film layer mixture in the S21 is put into a feed hopper of an extruder, a cover plate is used for sealing the feed hopper, an electric heating band-pass electric machine is used for heating an extrusion barrel, a temperature controller is used for detecting the temperature of the extrusion barrel through a temperature sensing probe and controlling the temperature of the extrusion barrel through controlling the operation of the electric heating band, a driving motor is used for driving a driving chain wheel to rotate through the power-on operation of the driving motor, the driving chain wheel drives a driven chain wheel to rotate through a chain, a first rotating shaft rotates under the action of the driven chain wheel, a spiral blade connected to the first rotating shaft rotates to drive the mixture to move, the mixture is stirred and mixed in the moving process of the mixture, meanwhile, the electric heating band heats the mixture, the mixture moves towards an extrusion disc under the stirring of the spiral blade and is extruded through an extrusion hole arranged on the extrusion disc, a second rotating shaft rotates along with the first rotating shaft, and a, cutting the extruded base film layer melt material by a cutting knife arranged on the rotating seat;
s23: preparing a protective layer, namely selecting raw materials required by the preparation of the protective layer according to the weight component ratio, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a protective layer mixture; putting the protective layer mixture into an extruder to extrude a protective layer melt;
s24: and putting the protective layer, the base material layer and the protective layer molten material into a co-extrusion die head for co-extrusion, so that the protective layer, the base material layer and the protective layer are sequentially overlapped from outside to inside in a molten state to form a molten film, and then chilling the molten film after blowing up to obtain the protective film.
Preferably, the extruder comprises a frame, a fixed seat, a connecting bearing, a driven sprocket, a motor seat, a receiving disc and an extrusion disc; the fixed seat is connected to the rack, the fixed seat is connected with an extrusion barrel, a feed hopper is arranged at the upper end of the extrusion barrel, a first rotating shaft is arranged in the extrusion barrel, two ends of the first rotating shaft are rotatably connected to the side wall of the extrusion barrel through connecting bearings, helical blades are arranged on the periphery of the first rotating shaft, the motor base is fixedly connected to the rack, a driving motor is fixedly mounted on the motor base, the output end of the driving motor is connected with a driving sprocket, a chain is meshed and connected to the driving sprocket, a driven sprocket is fixedly connected to the first rotating shaft, and the driven sprocket is meshed and connected with the chain; the extrusion disc is provided with extrusion holes, the extrusion disc is detachably connected with threads of the extrusion disc and is far away from one side of the driven sprocket, the material receiving disc is fixedly mounted on the rack and is located below the machine extrusion disc.
Preferably, a connecting frame is fixedly arranged on the rack, a connecting seat is arranged on the connecting frame, the connecting seat is rotatably connected with a second rotating shaft through a connecting bearing, one end, far away from the connecting seat, of the second rotating shaft is fixedly connected onto the first rotating shaft, one end, close to the extrusion barrel, of the second rotating shaft is fixedly connected with a rotating seat, and a cutting knife is connected onto the rotating seat.
Preferably, an electric heating belt is spirally laid on the outer side wall of the extrusion charging barrel, and an insulating layer is coated on the outer side wall of the extrusion charging barrel.
Preferably, a temperature controller is arranged on the rack, the temperature controller is connected with the electric heating belt, a temperature sensing probe is connected to the temperature controller, and the temperature sensing probe is connected to the side wall of the temperature controller.
Preferably, a chain protective cover is arranged outside the driven chain wheel, the chain and the driving chain wheel, and a protective casing is arranged at the upper end of the rack.
The invention has the beneficial effects that: the mixed raw materials of the protective film are put into a feed hopper, a cover plate is used for sealing the feed hopper, dust can be effectively prevented from falling into the feed hopper so as to influence the quality of the protective film, an electric heating band-pass electric machine is used for heating an extrusion barrel, a temperature controller is used for detecting the temperature of the extrusion barrel through a temperature sensing probe and controlling the temperature of the extrusion barrel through controlling the work of an electric heating band, the temperature range in the extrusion barrel in an extruder is effectively ensured, the temperature range is conveniently regulated and controlled through the temperature controller, a driving motor is electrified to work to drive a driving sprocket to rotate, the driving sprocket drives a driven sprocket to rotate through a chain, a first rotating shaft rotates under the action of the driven sprocket, a helical blade connected onto the first rotating shaft rotates to drive the mixed materials to move, the mixed materials are stirred and mixed in the moving process of the mixed raw materials of the protective film, and the mixed raw materials of, effectively improve the mixed effect to the mixed raw materials of protective film, the electric heating area heats the mixture, the mixture is extruded the dish and is removed towards extruding under helical blade's the stirring, extrude through the extrusion hole that sets up on extruding the dish, the second pivot rotates along with first pivot, the second pivot rotates and drives and rotates the seat rotation, the cutting knife that sets up on rotating the seat melts the material to the inoxidizing coating of extruding and cuts, it is the similar type of big small dimension specification effectively to ensure the mixed material that melts of protective film of extruding, be favorable to the generation of follow-up protective film, the protective film includes base film layer and bonds the inoxidizing coating in base film layer both sides, effectively improve the intensity and the protecting effect of protective film, contain the elastic property that thermoplastic polyurethane elastomer effectively improved the protective film in the raw materials of inoxidizing coating simultaneously.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an isometric view of FIG. 1 of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is an isometric view of FIG. 3 of the present invention;
FIG. 5 is a schematic top view of the structure of FIG. 3 according to the present invention;
FIG. 6 is a schematic view of the structure of FIG. 5 in the direction A-A according to the present invention;
in the figure: 1. a frame; 2. a fixed seat; 3. extruding out of the barrel; 4. a connecting frame; 5. a feed hopper; 6. a first rotating shaft; 7. connecting a bearing; 8. a helical blade; 9. a driven sprocket; 10. a chain; 11. a motor base; 12. a drive sprocket; 13. a drive motor; 14. a chain guard; 15. a protective enclosure; 16. a take-up pan; 17. an extrusion disc; 18. a connecting seat; 19. a rotating shaft; 20. a rotating seat; 21. a cutting knife; 22. an electrical heating belt; 23. a heat-insulating layer; 24. a temperature sensing probe; 25. and (7) a temperature controller.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
A high-elasticity PE protective film comprises a base film layer and protective layers adhered to two sides of the base film layer, wherein the base film layer is prepared from the following raw materials in parts by weight: 200 parts of polyethylene, 16 parts of modified silicon carbide, 2 parts of silicic acid polymer powder, 5 parts of dispersing agent, 30 parts of polyvinyl alcohol, 12 parts of glyceryl triacetate, 6 parts of dioctyl phthalate, 18 parts of diethylene glycol and 40 parts of deionized water;
the protective layer is prepared from the following raw materials in parts by weight: 30 parts of low-density polyethylene, 54 parts of linear low-density polyethylene, 5 parts of metallocene linear low-density polyethylene and 40 parts of thermoplastic polyurethane elastomer;
the preparation method of the protective layer comprises the following steps:
s11: adding the raw material components into a mixer according to the weight ratio, and stirring to form a protective layer mixture;
s12: the method comprises the steps of putting a mixture of the protective layers into an extruder for extrusion, putting the mixture of the protective layers into a feed hopper 5, sealing the feed hopper 5 by a cover plate, heating an extrusion barrel 3 by electrifying an electric heating belt 22, detecting the temperature of the extrusion barrel 3 by a temperature sensing probe 24 by a temperature controller 25, controlling the temperature of the extrusion barrel 3 by controlling the operation of the electric heating belt 22, driving a driving motor 13 to drive a driving sprocket 12 to rotate by electrifying, driving the driving sprocket 12 to drive a driven sprocket 9 to rotate by a chain 10, rotating a first rotating shaft 6 under the action of the driven sprocket 9, driving the mixture to move by rotating a helical blade 8 connected on the first rotating shaft 6, stirring and mixing the mixture in the moving process of the mixture, simultaneously heating the mixture by the electric heating belt 22, moving the mixture towards an extrusion disc 17 under the stirring of the helical blade, and extruding through an extrusion hole arranged on the extrusion disc 17, the second rotating shaft 19 rotates along with the first rotating shaft 6, the second rotating shaft 19 rotates to drive the rotating seat 20 to rotate, and the extruded protective layer melting material is cut by a cutting knife 21 arranged on the rotating seat 20;
s13: and blowing the melt plastic film to a cooling roller by the extruded protective layer through an air knife, and cooling and shaping the melt plastic film through the cooling roller to form a protective layer film.
A production process of a high-elasticity PE protective film specifically comprises the following steps:
s21: preparing a base film layer, namely selecting raw materials required by the preparation of the base film layer according to the weight components, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a base film layer mixture;
s22: the base film layer mixture in the S21 is put into a feed hopper 5 of an extruder, a cover plate is used for sealing the feed hopper 5, an electric heating belt 22 is electrified to work to heat an extrusion barrel 3, a temperature controller 25 detects the temperature of the extrusion barrel 3 through a temperature sensing probe 24 and controls the temperature of the extrusion barrel 3 through controlling the work of the electric heating belt 22, a driving motor 13 is electrified to work to drive a driving sprocket 12 to rotate, the driving sprocket 12 drives a driven sprocket 9 to rotate through a chain 10, a first rotating shaft 6 rotates under the action of the driven sprocket 9, a helical blade 8 connected on the first rotating shaft 6 rotates to drive the mixture to move, the mixture is stirred and mixed in the moving process of the mixture, the electric heating belt 22 heats the mixture, the mixture moves towards an extrusion disc 17 under the stirring of the helical blade and is extruded through an extrusion hole arranged on the extrusion disc 17, the second rotating shaft 19 rotates along with the first rotating shaft 6, the second rotating shaft 19 rotates to drive the rotating seat 20 to rotate, and the extruded base film layer melting material is cut by a cutting knife 21 arranged on the rotating seat 20;
s23: preparing a protective layer, namely selecting raw materials required by the preparation of the protective layer according to the weight component ratio, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a protective layer mixture; putting the protective layer mixture into an extruder to extrude a protective layer melt;
s24: and putting the protective layer, the base material layer and the protective layer molten material into a co-extrusion die head for co-extrusion, so that the protective layer, the base material layer and the protective layer are sequentially overlapped from outside to inside in a molten state to form a molten film, and then chilling the molten film after blowing up to obtain the protective film.
Referring to fig. 1-6, the extruder includes a frame 1, a fixing base 2, a connecting bearing 7, a driven sprocket 9, a motor base 11, a receiving tray 16 and an extruding tray 17; the fixed seat 2 is connected to the rack 1, the fixed seat 2 is connected with the extrusion barrel 3, the upper end of the extrusion barrel 3 is provided with the feed hopper 5, the extrusion barrel 3 is internally provided with the first rotating shaft 6, two ends of the first rotating shaft 6 are rotatably connected to the side wall of the extrusion barrel 3 through the connecting bearings 7, the periphery of the first rotating shaft 6 is provided with the helical blade 8, the motor seat 11 is fixedly connected to the rack 1, the motor seat 11 is fixedly provided with the driving motor 13, the output end of the driving motor 13 is connected with the driving chain wheel 12, the driving chain wheel 12 is engaged and connected with the chain 10, the driven chain wheel 9 is fixedly connected to the first rotating shaft 6, and the driven chain wheel 9 is engaged and; the extrusion disc 17 is provided with extrusion holes, the extrusion disc 17 is detachably connected to one side of the extrusion barrel 3 far away from the driven chain wheel 9 through threads, the material receiving disc 16 is fixedly installed on the rack 1, and the material receiving disc 16 is located below the extrusion disc 17.
Frame 1 is last to be fixed and is provided with link 4, is provided with connecting seat 18 on link 4, and connecting seat 18 rotates through connecting bearing 7 and is connected with second pivot 19, and the one end fixed connection that connecting seat 18 was kept away from to second pivot 19 is on first pivot 6, and second pivot 19 is close to the one end fixedly connected with rotation seat 20 of extruding feed cylinder 3, rotates and is connected with cutting knife 21 on the seat 20.
An electric heating belt 22 is spirally laid on the outer side wall of the extrusion charging barrel 3, and a heat preservation layer 23 is coated on the outer side wall of the extrusion charging barrel 3.
The frame 1 is provided with a temperature controller 25, the temperature controller 25 is connected with an electric heating belt 22, the temperature controller 25 is connected with a temperature sensing probe 24, and the temperature sensing probe 24 is connected on the side wall of the temperature controller 25.
A chain protective cover 14 is arranged outside the driven chain wheel 9, the chain 10 and the driving chain wheel 12, and a protective casing 15 is arranged at the upper end of the frame 1.
Example two
A high-elasticity PE protective film comprises a base film layer and protective layers adhered to two sides of the base film layer, wherein the base film layer is prepared from the following raw materials in parts by weight: 250 parts of polyethylene, 20 parts of modified silicon carbide, 3 parts of silicic acid polymer powder, 6 parts of dispersing agent, 38 parts of polyvinyl alcohol, 16 parts of glyceryl triacetate, 8 parts of dioctyl phthalate, 24 parts of diethylene glycol and 54 parts of deionized water;
the protective layer is prepared from the following raw materials in parts by weight: 40 parts of low-density polyethylene, 60 parts of linear low-density polyethylene, 8 parts of metallocene linear low-density polyethylene and 48 parts of thermoplastic polyurethane elastomer;
the preparation method of the protective layer comprises the following steps:
s11: adding the raw material components into a mixer according to the weight ratio, and stirring to form a protective layer mixture;
s12: the method comprises the steps of putting a mixture of the protective layers into an extruder for extrusion, putting the mixture of the protective layers into a feed hopper 5, sealing the feed hopper 5 by a cover plate, heating an extrusion barrel 3 by electrifying an electric heating belt 22, detecting the temperature of the extrusion barrel 3 by a temperature sensing probe 24 by a temperature controller 25, controlling the temperature of the extrusion barrel 3 by controlling the operation of the electric heating belt 22, driving a driving motor 13 to drive a driving sprocket 12 to rotate by electrifying, driving the driving sprocket 12 to drive a driven sprocket 9 to rotate by a chain 10, rotating a first rotating shaft 6 under the action of the driven sprocket 9, driving the mixture to move by rotating a helical blade 8 connected on the first rotating shaft 6, stirring and mixing the mixture in the moving process of the mixture, simultaneously heating the mixture by the electric heating belt 22, moving the mixture towards an extrusion disc 17 under the stirring of the helical blade, and extruding through an extrusion hole arranged on the extrusion disc 17, the second rotating shaft 19 rotates along with the first rotating shaft 6, the second rotating shaft 19 rotates to drive the rotating seat 20 to rotate, and the extruded protective layer melting material is cut by a cutting knife 21 arranged on the rotating seat 20;
s13: and blowing the melt plastic film to a cooling roller by the extruded protective layer through an air knife, and cooling and shaping the melt plastic film through the cooling roller to form a protective layer film.
A production process of a high-elasticity PE protective film specifically comprises the following steps:
s21: preparing a base film layer, namely selecting raw materials required by the preparation of the base film layer according to the weight components, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a base film layer mixture;
s22: the base film layer mixture in the S21 is put into a feed hopper 5 of an extruder, a cover plate is used for sealing the feed hopper 5, an electric heating belt 22 is electrified to work to heat an extrusion barrel 3, a temperature controller 25 detects the temperature of the extrusion barrel 3 through a temperature sensing probe 24 and controls the temperature of the extrusion barrel 3 through controlling the work of the electric heating belt 22, a driving motor 13 is electrified to work to drive a driving sprocket 12 to rotate, the driving sprocket 12 drives a driven sprocket 9 to rotate through a chain 10, a first rotating shaft 6 rotates under the action of the driven sprocket 9, a helical blade 8 connected on the first rotating shaft 6 rotates to drive the mixture to move, the mixture is stirred and mixed in the moving process of the mixture, the electric heating belt 22 heats the mixture, the mixture moves towards an extrusion disc 17 under the stirring of the helical blade and is extruded through an extrusion hole arranged on the extrusion disc 17, the second rotating shaft 19 rotates along with the first rotating shaft 6, the second rotating shaft 19 rotates to drive the rotating seat 20 to rotate, and the extruded base film layer melting material is cut by a cutting knife 21 arranged on the rotating seat 20;
s23: preparing a protective layer, namely selecting raw materials required by the preparation of the protective layer according to the weight component ratio, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a protective layer mixture; putting the protective layer mixture into an extruder to extrude a protective layer melt;
s24: and putting the protective layer, the base material layer and the protective layer molten material into a co-extrusion die head for co-extrusion, so that the protective layer, the base material layer and the protective layer are sequentially overlapped from outside to inside in a molten state to form a molten film, and then chilling the molten film after blowing up to obtain the protective film.
Referring to fig. 1-6, the extruder includes a frame 1, a fixing base 2, a connecting bearing 7, a driven sprocket 9, a motor base 11, a receiving tray 16 and an extruding tray 17; the fixed seat 2 is connected to the rack 1, the fixed seat 2 is connected with the extrusion barrel 3, the upper end of the extrusion barrel 3 is provided with the feed hopper 5, the extrusion barrel 3 is internally provided with the first rotating shaft 6, two ends of the first rotating shaft 6 are rotatably connected to the side wall of the extrusion barrel 3 through the connecting bearings 7, the periphery of the first rotating shaft 6 is provided with the helical blade 8, the motor seat 11 is fixedly connected to the rack 1, the motor seat 11 is fixedly provided with the driving motor 13, the output end of the driving motor 13 is connected with the driving chain wheel 12, the driving chain wheel 12 is engaged and connected with the chain 10, the driven chain wheel 9 is fixedly connected to the first rotating shaft 6, and the driven chain wheel 9 is engaged and; the extrusion disc 17 is provided with extrusion holes, the extrusion disc 17 is detachably connected to one side of the extrusion barrel 3 far away from the driven chain wheel 9 through threads, the material receiving disc 16 is fixedly installed on the rack 1, and the material receiving disc 16 is located below the extrusion disc 17.
Frame 1 is last to be fixed and is provided with link 4, is provided with connecting seat 18 on link 4, and connecting seat 18 rotates through connecting bearing 7 and is connected with second pivot 19, and the one end fixed connection that connecting seat 18 was kept away from to second pivot 19 is on first pivot 6, and second pivot 19 is close to the one end fixedly connected with rotation seat 20 of extruding feed cylinder 3, rotates and is connected with cutting knife 21 on the seat 20.
An electric heating belt 22 is spirally laid on the outer side wall of the extrusion charging barrel 3, and a heat preservation layer 23 is coated on the outer side wall of the extrusion charging barrel 3.
The frame 1 is provided with a temperature controller 25, the temperature controller 25 is connected with an electric heating belt 22, the temperature controller 25 is connected with a temperature sensing probe 24, and the temperature sensing probe 24 is connected on the side wall of the temperature controller 25.
A chain protective cover 14 is arranged outside the driven chain wheel 9, the chain 10 and the driving chain wheel 12, and a protective casing 15 is arranged at the upper end of the frame 1.
EXAMPLE III
A high-elasticity PE protective film comprises a base film layer and protective layers adhered to two sides of the base film layer, wherein the base film layer is prepared from the following raw materials in parts by weight: 300 parts of polyethylene, 25 parts of modified silicon carbide, 4 parts of silicic acid polymer powder, 8 parts of dispersing agent, 45 parts of polyvinyl alcohol, 21 parts of glyceryl triacetate, 12 parts of dioctyl phthalate, 32 parts of diethylene glycol and 68 parts of deionized water;
the protective layer is prepared from the following raw materials in parts by weight: 50 parts of low-density polyethylene, 72 parts of linear low-density polyethylene, 12 parts of metallocene linear low-density polyethylene and 56 parts of thermoplastic polyurethane elastomer;
the preparation method of the protective layer comprises the following steps:
s11: adding the raw material components into a mixer according to the weight ratio, and stirring to form a protective layer mixture;
s12: the method comprises the steps of putting a mixture of the protective layers into an extruder for extrusion, putting the mixture of the protective layers into a feed hopper 5, sealing the feed hopper 5 by a cover plate, heating an extrusion barrel 3 by electrifying an electric heating belt 22, detecting the temperature of the extrusion barrel 3 by a temperature sensing probe 24 by a temperature controller 25, controlling the temperature of the extrusion barrel 3 by controlling the operation of the electric heating belt 22, driving a driving motor 13 to drive a driving sprocket 12 to rotate by electrifying, driving the driving sprocket 12 to drive a driven sprocket 9 to rotate by a chain 10, rotating a first rotating shaft 6 under the action of the driven sprocket 9, driving the mixture to move by rotating a helical blade 8 connected on the first rotating shaft 6, stirring and mixing the mixture in the moving process of the mixture, simultaneously heating the mixture by the electric heating belt 22, moving the mixture towards an extrusion disc 17 under the stirring of the helical blade, and extruding through an extrusion hole arranged on the extrusion disc 17, the second rotating shaft 19 rotates along with the first rotating shaft 6, the second rotating shaft 19 rotates to drive the rotating seat 20 to rotate, and the extruded protective layer melting material is cut by a cutting knife 21 arranged on the rotating seat 20;
s13: and blowing the melt plastic film to a cooling roller by the extruded protective layer through an air knife, and cooling and shaping the melt plastic film through the cooling roller to form a protective layer film.
A production process of a high-elasticity PE protective film specifically comprises the following steps:
s21: preparing a base film layer, namely selecting raw materials required by the preparation of the base film layer according to the weight components, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a base film layer mixture;
s22: the base film layer mixture in the S21 is put into a feed hopper 5 of an extruder, a cover plate is used for sealing the feed hopper 5, an electric heating belt 22 is electrified to work to heat an extrusion barrel 3, a temperature controller 25 detects the temperature of the extrusion barrel 3 through a temperature sensing probe 24 and controls the temperature of the extrusion barrel 3 through controlling the work of the electric heating belt 22, a driving motor 13 is electrified to work to drive a driving sprocket 12 to rotate, the driving sprocket 12 drives a driven sprocket 9 to rotate through a chain 10, a first rotating shaft 6 rotates under the action of the driven sprocket 9, a helical blade 8 connected on the first rotating shaft 6 rotates to drive the mixture to move, the mixture is stirred and mixed in the moving process of the mixture, the electric heating belt 22 heats the mixture, the mixture moves towards an extrusion disc 17 under the stirring of the helical blade and is extruded through an extrusion hole arranged on the extrusion disc 17, the second rotating shaft 19 rotates along with the first rotating shaft 6, the second rotating shaft 19 rotates to drive the rotating seat 20 to rotate, and the extruded base film layer melting material is cut by a cutting knife 21 arranged on the rotating seat 20;
s23: preparing a protective layer, namely selecting raw materials required by the preparation of the protective layer according to the weight component ratio, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a protective layer mixture; putting the protective layer mixture into an extruder to extrude a protective layer melt;
s24: and putting the protective layer, the base material layer and the protective layer molten material into a co-extrusion die head for co-extrusion, so that the protective layer, the base material layer and the protective layer are sequentially overlapped from outside to inside in a molten state to form a molten film, and then chilling the molten film after blowing up to obtain the protective film.
Referring to fig. 1-6, the extruder includes a frame 1, a fixing base 2, a connecting bearing 7, a driven sprocket 9, a motor base 11, a receiving tray 16 and an extruding tray 17; the fixed seat 2 is connected to the rack 1, the fixed seat 2 is connected with the extrusion barrel 3, the upper end of the extrusion barrel 3 is provided with the feed hopper 5, the extrusion barrel 3 is internally provided with the first rotating shaft 6, two ends of the first rotating shaft 6 are rotatably connected to the side wall of the extrusion barrel 3 through the connecting bearings 7, the periphery of the first rotating shaft 6 is provided with the helical blade 8, the motor seat 11 is fixedly connected to the rack 1, the motor seat 11 is fixedly provided with the driving motor 13, the output end of the driving motor 13 is connected with the driving chain wheel 12, the driving chain wheel 12 is engaged and connected with the chain 10, the driven chain wheel 9 is fixedly connected to the first rotating shaft 6, and the driven chain wheel 9 is engaged and; the extrusion disc 17 is provided with extrusion holes, the extrusion disc 17 is detachably connected to one side of the extrusion barrel 3 far away from the driven chain wheel 9 through threads, the material receiving disc 16 is fixedly installed on the rack 1, and the material receiving disc 16 is located below the extrusion disc 17.
Frame 1 is last to be fixed and is provided with link 4, is provided with connecting seat 18 on link 4, and connecting seat 18 rotates through connecting bearing 7 and is connected with second pivot 19, and the one end fixed connection that connecting seat 18 was kept away from to second pivot 19 is on first pivot 6, and second pivot 19 is close to the one end fixedly connected with rotation seat 20 of extruding feed cylinder 3, rotates and is connected with cutting knife 21 on the seat 20.
An electric heating belt 22 is spirally laid on the outer side wall of the extrusion charging barrel 3, and a heat preservation layer 23 is coated on the outer side wall of the extrusion charging barrel 3.
The frame 1 is provided with a temperature controller 25, the temperature controller 25 is connected with an electric heating belt 22, the temperature controller 25 is connected with a temperature sensing probe 24, and the temperature sensing probe 24 is connected on the side wall of the temperature controller 25.
A chain protective cover 14 is arranged outside the driven chain wheel 9, the chain 10 and the driving chain wheel 12, and a protective casing 15 is arranged at the upper end of the frame 1.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (7)

1. The high-elasticity PE protective film comprises a base film layer and protective layers adhered to two sides of the base film layer, and is characterized in that the base film layer is prepared from the following raw materials in parts by weight: 300 parts of polyethylene 200-one, 16-25 parts of modified silicon carbide, 2-4 parts of silicic acid polymer powder, 5-8 parts of dispersing agent, 30-45 parts of polyvinyl alcohol, 12-21 parts of glyceryl triacetate, 6-12 parts of dioctyl phthalate, 18-32 parts of diethylene glycol and 40-68 parts of deionized water;
the protective layer is prepared from the following raw materials in parts by weight: 30-50 parts of low-density polyethylene, 54-72 parts of linear low-density polyethylene, 5-12 parts of metallocene linear low-density polyethylene and 40-56 parts of thermoplastic polyurethane elastomer;
the preparation method of the protective layer comprises the following steps:
s11: adding the raw material components into a mixer according to the weight ratio, and stirring to form a protective layer mixture;
s12: the method comprises the steps of putting a mixture of the protective layer into an extruder for extrusion, putting the mixture of the protective layer into a feed hopper (5), sealing the feed hopper (5) by a cover plate, heating an extrusion barrel (3) by an electric heating belt (22) in a power-on working mode, detecting the temperature of the extrusion barrel (3) by a temperature-sensing probe (24) by a temperature controller (25), controlling the temperature of the extrusion barrel (3) by controlling the electric heating belt (22) in a working mode, driving a driving motor (13) in a power-on working mode to drive a driving chain wheel (12) to rotate, driving the driving chain wheel (12) to drive a driven chain wheel (9) to rotate through a chain (10), rotating a first rotating shaft (6) under the action of the driven chain wheel (9), rotating a spiral blade (8) connected to the first rotating shaft (6) to drive the mixture to move, stirring and mixing the mixture in the moving process, and heating the mixture by the electric heating belt (22), the mixture moves towards the extrusion disc (17) under the stirring of the helical blades and is extruded through extrusion holes formed in the extrusion disc (17), the second rotating shaft (19) rotates along with the first rotating shaft (6), the second rotating shaft (19) rotates to drive the rotating seat (20) to rotate, and a cutting knife (21) arranged on the rotating seat (20) is used for cutting the molten material of the extruded protective layer;
s13: and blowing the melt plastic film to a cooling roller by the extruded protective layer through an air knife, and cooling and shaping the melt plastic film through the cooling roller to form a protective layer film.
2. A process for producing a highly elastic PE protective film according to claim 1, characterized in that the process comprises the following steps:
s21: preparing a base film layer, namely selecting raw materials required by the preparation of the base film layer according to the weight components, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a base film layer mixture;
s22: the base film layer mixture in the S21 is put into a feed hopper (5) of an extruder, a cover plate is used for sealing the feed hopper (5), an electric heating belt (22) is electrified to work to heat an extrusion barrel (3), a temperature controller (25) detects the temperature of the extrusion barrel (3) through a temperature sensing probe (24) and controls the temperature of the extrusion barrel (3) through controlling the work of the electric heating belt (22), a driving motor (13) is electrified to work to drive a driving chain wheel (12) to rotate, the driving chain wheel (12) drives a driven chain wheel (9) to rotate through a chain (10), a first rotating shaft (6) rotates under the action of the driven chain wheel (9), a spiral blade (8) connected to the first rotating shaft (6) rotates to drive the mixture to move, the mixture is stirred and mixed in the moving process of the mixture, and the electric heating belt (22) heats the mixture at the same time, the mixture moves towards the extrusion disc (17) under the stirring of the helical blades and is extruded through extrusion holes arranged on the extrusion disc (17), the second rotating shaft (19) rotates along with the first rotating shaft (6), the second rotating shaft (19) rotates to drive the rotating seat (20) to rotate, and the extruded base film layer melt material is cut through a cutting knife (21) arranged on the rotating seat (20);
s23: preparing a protective layer, namely selecting raw materials required by the preparation of the protective layer according to the weight component ratio, and putting the raw materials into a mixer to be uniformly stirred and mixed to form a protective layer mixture; putting the protective layer mixture into an extruder to extrude a protective layer melt;
s24: and putting the protective layer, the base material layer and the protective layer molten material into a co-extrusion die head for co-extrusion, so that the protective layer, the base material layer and the protective layer are sequentially overlapped from outside to inside in a molten state to form a molten film, and then chilling the molten film after blowing up to obtain the protective film.
3. The production process of the high-elasticity PE protective film according to claim 2, wherein the extruder comprises a rack (1), a fixed seat (2), a connecting bearing (7), a driven sprocket (9), a motor seat (11), a material receiving disc (16) and an extrusion disc (17); the fixing seat (2) is connected to the rack (1), the fixing seat (2) is connected with an extruding barrel (3), the upper end of the extruding barrel (3) is provided with a feed hopper (5), a first rotating shaft (6) is arranged inside the extruding barrel (3), the two ends of the first rotating shaft (6) are rotatably connected to the side wall of the extruding barrel (3) through a connecting bearing (7), the periphery of the first rotating shaft (6) is provided with a helical blade (8), the motor base (11) is fixedly connected to the rack (1), a driving motor (13) is fixedly installed on the motor base (11), the output end of the driving motor (13) is connected with a driving sprocket (12), the driving sprocket (12) is engaged with a chain (10), and the driven sprocket (9) is fixedly connected to the first rotating shaft (6), the driven chain wheel (9) is meshed with the chain (10); it extrudes the hole to be provided with on dish (17) to extrude, it can dismantle the connection in to extrude dish (17) screw thread extrude feed cylinder (3) and keep away from one side of driven sprocket (9), take-up (16) fixed mounting be in on frame (1), take-up (16) are located the machine is extruded dish (17) below.
4. The production process of the high-elasticity PE protective film according to claim 2, characterized in that a connecting frame (4) is fixedly arranged on the rack (1), a connecting seat (18) is arranged on the connecting frame (4), the connecting seat (18) is rotatably connected with a second rotating shaft (19) through the connecting bearing (7), one end of the second rotating shaft (19) far away from the connecting seat (18) is fixedly connected on the first rotating shaft (6), one end of the second rotating shaft (19) close to the extruding cylinder (3) is fixedly connected with a rotating seat (20), and the rotating seat (20) is connected with a cutting knife (21).
5. The production process of the high-elasticity PE protective film according to claim 2, wherein an electric heating belt (22) is spirally laid on the outer side wall of the extrusion cylinder (3), and an insulating layer (23) is coated on the outer side wall of the extrusion cylinder (3).
6. The production process of the high-elasticity PE protective film according to claim 5, wherein a temperature controller (25) is arranged on the frame (1), the temperature controller (25) is connected with the electric heating belt (22), a temperature sensing probe (24) is connected to the temperature controller (25), and the temperature sensing probe (24) is connected to the side wall of the temperature controller (25).
7. The production process of the high-elasticity PE protective film according to claim 2, wherein chain protective covers (14) are arranged outside the driven chain wheel (9), the chain (10) and the driving chain wheel (12), and a protective casing (15) is arranged at the upper end of the rack (1).
CN202010238393.5A 2020-03-30 2020-03-30 High-elasticity PE protective film and production process thereof Pending CN111391450A (en)

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