GB998063A - Process and apparatus for the extrusion of fusible polymers - Google Patents

Process and apparatus for the extrusion of fusible polymers

Info

Publication number
GB998063A
GB998063A GB6538/63A GB653863A GB998063A GB 998063 A GB998063 A GB 998063A GB 6538/63 A GB6538/63 A GB 6538/63A GB 653863 A GB653863 A GB 653863A GB 998063 A GB998063 A GB 998063A
Authority
GB
United Kingdom
Prior art keywords
pressure
zone
polymers
vacuum
continually
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6538/63A
Inventor
William Elderkin Bentley
James Alexander Priebe
Stanley David Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to GB6538/63A priority Critical patent/GB998063A/en
Priority to BE643845D priority patent/BE643845A/xx
Priority to NL646401410A priority patent/NL143628B/en
Priority to CH182764A priority patent/CH425208A/en
Priority to DE19641554833 priority patent/DE1554833B2/en
Priority to LU45450D priority patent/LU45450A1/xx
Priority to FR964133A priority patent/FR1391200A/en
Publication of GB998063A publication Critical patent/GB998063A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/09—Control of pressure, temperature or feeding rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92409—Die; Nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

998,063. Extruding polymers; melt spinning. E. I. DU PONT DE NEMOURS & CO. Feb. 12, 1964 [Feb. 18, 1963], No. 6538/63. Headings B5A and B5B. Fusible polymers are formed into filaments, films, tubing &c. by extrusion while molten, through a screw extruder maintained at a suitable temperature, in which they are continually kneaded, the polymers passing through a vacuum degassing zone, in which volatile matter is continually removed through a vent port to regulate the relative viscosity, then through a superatmospheric pressure zone and finally out through the shaping means, e.g. a die or spinneret, the pressure in the pressure zone being continually measured and the polymer feed rate to the extruder and the extruder screw speed, both being continually regulated in proportion to said pressure to maintain the pressure constant. Suitable polymers include nylons (polyamides), polyesters (e.g. polyethylene terephthalate), olefins (e.g. polyethylene, polypropylene), vinylons (e.g. polyvinyl chloride), polymethyl methacrylate, cellulose acetate, polyxoymethylene polymers and co-polymers and mixtures of the polymers. Additives such as anti-oxidants, antistatic agents, stabilizers, colouring agents, filament surface rougheners, fillers, dye assistants, plasticizers and lubricants may be added through inlet ports upstream of the vacuum zone. The polymer is fed by pneumatic conveyer 2 from drum 1 to hopper 3 and into the inlet of the twin screw conveyer 4 in which it is intensively kneaded and passed through a vacuum zone created by steam jets 5, the volatiles passing out through parts 6, 7, 8, thus effectively regulating the relative viscosity of the polymer which then passes through a superatmospheric pressure zone to the transfer line 9 and spinneret 10 (or die). Pressure detector 13 measures the pressure in the superatmospheric zone and deviations from the preset value are transmitted from pressure regulator 15 to screw speed regulator 18 and feed speed regulator 17 to act to restore the pressure to its correct value. A further control over the extrusion conditions may be provided by measuring the pressure at a spinning block pump at the spinneret 10 and adjusting the degree of vacuum in the vacuum zone by suitable control means such that the differential pressure between the pressure zone and the spinning block pump is maintained constant. Specifications 687,021 and 755,069 are referred to.
GB6538/63A 1963-02-18 1963-02-18 Process and apparatus for the extrusion of fusible polymers Expired GB998063A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB6538/63A GB998063A (en) 1963-02-18 1963-02-18 Process and apparatus for the extrusion of fusible polymers
BE643845D BE643845A (en) 1963-02-18 1964-02-14
NL646401410A NL143628B (en) 1963-02-18 1964-02-17 METHOD OF MANUFACTURE OF EXTRUDE PRODUCTS AND EQUIPMENT FOR USE THEREOF.
CH182764A CH425208A (en) 1963-02-18 1964-02-17 Method and device for the production of extruded shapes from a meltable polymer
DE19641554833 DE1554833B2 (en) 1963-02-18 1964-02-18 SCREW EXTRUDER FOR THE MANUFACTURING OF PRODUCTS FROM A MELTABLE POLYMER
LU45450D LU45450A1 (en) 1963-02-18 1964-02-18
FR964133A FR1391200A (en) 1963-02-18 1964-02-18 Improvements in methods and apparatus for manufacturing extruded products from polyamide resins and other fusible polymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6538/63A GB998063A (en) 1963-02-18 1963-02-18 Process and apparatus for the extrusion of fusible polymers

Publications (1)

Publication Number Publication Date
GB998063A true GB998063A (en) 1965-07-14

Family

ID=9816326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6538/63A Expired GB998063A (en) 1963-02-18 1963-02-18 Process and apparatus for the extrusion of fusible polymers

Country Status (6)

Country Link
BE (1) BE643845A (en)
CH (1) CH425208A (en)
DE (1) DE1554833B2 (en)
GB (1) GB998063A (en)
LU (1) LU45450A1 (en)
NL (1) NL143628B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333703A1 (en) * 1983-09-17 1985-03-28 Didier Engineering Gmbh, 4300 Essen Process and system for increasing the surface roughness and antiblocking of film tapes or similar tape-shaped video and/or audio media made of plastic, especially of polyester
GB2163386A (en) * 1984-07-20 1986-02-26 Windmoeller & Hoelscher Co-extruding a substrate web of synthetic thermoplastic material and an adhesive layer consisting of a non-crosslinkable elastomer
US4581443A (en) * 1984-10-09 1986-04-08 Celanese Corporation Production of improved pellets from melt-processable polymer which is capable of forming and anisotropic melt
US10077341B2 (en) 2013-03-15 2018-09-18 Ascend Performance Materials Operations Llc Polymerization coupled compounding process
DE102020101387A1 (en) 2020-01-21 2021-07-22 BC Extrusion Holding GmbH Method and device for reducing fluctuations in the output of plastic compound
CN116476358A (en) * 2023-06-25 2023-07-25 山东森荣新材料股份有限公司 PTFE blank strip uniformity detection device and use method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1423138A (en) * 1972-03-04 1976-01-28 Dunlop Ltd Method of making articles
JPS51134752A (en) * 1975-05-16 1976-11-22 Sekisui Chemical Co Ltd Method of extrusion molding resin molded article with different thicknesses
DE3412158C2 (en) * 1984-03-31 1987-02-26 Candid Neuenkirch Burkart Extrusion plant operating in the recycling process and control of such an extrusion plant
DE3526050C2 (en) * 1985-07-20 1994-11-17 Krupp Ag Hoesch Krupp Process for operating an extruder
DE3623679A1 (en) * 1986-07-12 1988-01-28 Werner & Pfleiderer METHOD FOR OPERATING A SNAIL EXTRUDER AND SNAIL EXTRUDER FOR IMPLEMENTING THE METHOD
DE3833776C2 (en) * 1987-10-08 1995-11-23 Barmag Barmer Maschf Device for extruding a thermoplastic melt
CN109702954B (en) * 2019-01-02 2021-08-03 湖州国晟智能设备科技有限公司 Gas barrier degradable plastic master batch
CN113459324A (en) * 2020-03-30 2021-10-01 中石油吉林化工工程有限公司 Devolatilization screw extruder equipment and method for producing PMMA (polymethyl methacrylate) by utilizing equipment

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333703A1 (en) * 1983-09-17 1985-03-28 Didier Engineering Gmbh, 4300 Essen Process and system for increasing the surface roughness and antiblocking of film tapes or similar tape-shaped video and/or audio media made of plastic, especially of polyester
GB2163386A (en) * 1984-07-20 1986-02-26 Windmoeller & Hoelscher Co-extruding a substrate web of synthetic thermoplastic material and an adhesive layer consisting of a non-crosslinkable elastomer
US4581443A (en) * 1984-10-09 1986-04-08 Celanese Corporation Production of improved pellets from melt-processable polymer which is capable of forming and anisotropic melt
EP0178150A2 (en) * 1984-10-09 1986-04-16 Celanese Corporation Production of improved pellets from melt-processable polymer which is capable of forming an anisotropic melt
EP0178150A3 (en) * 1984-10-09 1987-10-28 Celanese Corporation Production of improved pellets from melt-processable polymer which is capable of forming an anisotropic melt
US10081712B2 (en) 2013-03-15 2018-09-25 Ascend Performance Materials Operations Llc Polymerization coupled compounding process
US10077341B2 (en) 2013-03-15 2018-09-18 Ascend Performance Materials Operations Llc Polymerization coupled compounding process
US10590245B2 (en) 2013-03-15 2020-03-17 Ascend Performance Materials Operations Llc Polymerization coupled compounding process
US11447609B2 (en) 2013-03-15 2022-09-20 Ascend Performance Materials Operations Llc Polymerization coupled compounded nylon
DE102020101387A1 (en) 2020-01-21 2021-07-22 BC Extrusion Holding GmbH Method and device for reducing fluctuations in the output of plastic compound
DE102020101387B4 (en) 2020-01-21 2022-09-01 BC Extrusion Holding GmbH Method and device for reducing fluctuations in the output of plastic mass
CN116476358A (en) * 2023-06-25 2023-07-25 山东森荣新材料股份有限公司 PTFE blank strip uniformity detection device and use method
CN116476358B (en) * 2023-06-25 2023-08-15 山东森荣新材料股份有限公司 PTFE blank strip uniformity detection device and use method

Also Published As

Publication number Publication date
LU45450A1 (en) 1965-08-18
BE643845A (en) 1964-08-14
DE1554833B2 (en) 1972-12-21
NL143628B (en) 1974-10-15
DE1554833A1 (en) 1970-01-29
NL6401410A (en) 1964-08-19
CH425208A (en) 1966-11-30

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