US20150375890A1 - Paper cup and method for preparing the same - Google Patents

Paper cup and method for preparing the same Download PDF

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Publication number
US20150375890A1
US20150375890A1 US14/849,583 US201514849583A US2015375890A1 US 20150375890 A1 US20150375890 A1 US 20150375890A1 US 201514849583 A US201514849583 A US 201514849583A US 2015375890 A1 US2015375890 A1 US 2015375890A1
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United States
Prior art keywords
cup body
uneven
paper
cup
stiffeners
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.)
Abandoned
Application number
US14/849,583
Inventor
Jianying RUAN
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.)
SHANGHAI XINYU PAPER CUP CO Ltd
Original Assignee
SHANGHAI XINYU PAPER CUP CO Ltd
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Filing date
Publication date
Priority claimed from CN2011201614106U external-priority patent/CN202044019U/en
Application filed by SHANGHAI XINYU PAPER CUP CO Ltd filed Critical SHANGHAI XINYU PAPER CUP CO Ltd
Priority to US14/849,583 priority Critical patent/US20150375890A1/en
Assigned to SHANGHAI XINYU PAPER CUP CO., LTD. reassignment SHANGHAI XINYU PAPER CUP CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RUAN, Jianying
Publication of US20150375890A1 publication Critical patent/US20150375890A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/02—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape
    • B65D3/06—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape essentially conical or frusto-conical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/28—Other details of walls
    • B65D3/30—Local reinforcements, e.g. metallic rims
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G19/00—Table service
    • A47G19/22—Drinking vessels or saucers used for table service
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G19/00—Table service
    • A47G19/22—Drinking vessels or saucers used for table service
    • A47G19/2205—Drinking glasses or vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G19/00—Table service
    • A47G19/22—Drinking vessels or saucers used for table service
    • A47G19/2288—Drinking vessels or saucers used for table service with means for keeping liquid cool or hot
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G19/00—Table service
    • A47G19/22—Drinking vessels or saucers used for table service
    • A47G19/23—Drinking vessels or saucers used for table service of stackable type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/88—Printing; Embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0045—Bending or folding combined with joining
    • B31F1/0048—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
    • B31F1/0051—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles of definite lentgh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0045—Bending or folding combined with joining
    • B31F1/0048—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
    • B31F1/0051—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles of definite lentgh
    • B31F1/0054—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles of definite lentgh using internal forming surfaces, e.g. mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0045—Bending or folding combined with joining
    • B31F1/0048—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
    • B31F1/007—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles with multilayered walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/02—Sterilising, e.g. of complete packages
    • B65B55/12—Sterilising contents prior to, or during, packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/22—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines with double walls; with walls incorporating air-chambers; with walls made of laminated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3813—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container being in the form of a box, tray or like container
    • B65D81/3818—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container being in the form of a box, tray or like container formed with double walls, i.e. hollow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing

Definitions

  • the invention relates to a paper cup, and more particularly to a paper cup and a method for preparing the same.
  • paper cups have been widely used because of their convenience.
  • the paper cup is single layered, which has a low intensity, and is easily deformed after being filled with hot water, plus, it is not good at heat insulating and anti-sliding.
  • a new kind of double layered paper cup including an outer cup body and an inner cup body has been disclosed. Although this structure is useful to strengthen the intensity, and has a good heat insulation capability due to the gap between the inner and the outer cup body, the gap easily causes unevenness and deformation of the cup body.
  • the paper cup is anti-sliding, thermal insulated, and has an uneven surface.
  • a paper cup comprising: a cup body comprising a surface, and a base. A plurality of uneven stiffeners are arranged on the surface of the cup body.
  • the cup body is a single layered cup body, and the uneven stiffeners are arranged on the surface.
  • the cup body is a double layered cup body comprising an inner cup body and an outer cup body.
  • Each cup body comprises an inner surface and an outer surface.
  • the uneven stiffeners are arranged on the inner surface or the outer surface of each cup body.
  • the surface comprising the uneven stiffeners is an uneven surface.
  • the inner cup body and the outer cup body are tightly attached.
  • the inner surface of the inner cup body is a smooth surface, and the outer surface of the inner cup body is the uneven surface; or the inner surface of the inner cup body is the uneven surface, and the outer surface of the inner cup body is the smooth surface; or the inner surface of the outer cup body is the smooth surface, and the outer surface of the outer cup body is the uneven surface; or the inner surface of the outer cup body is the uneven surface, and the outer surface of the outer cup body is the smooth surface.
  • the uneven stiffeners are in regular or irregular uneven shapes; the uneven shapes are circular point, strip, undulate, triangle, or polygon; and the paper cup is in a shape of an inverted trapezoid or a cylinder.
  • a method for preparing the paper cup comprises:
  • PE polyethylene
  • PLA polylactic acid
  • the embossing device comprises: a smooth cylinder, and a special cylinder comprising uneven shapes
  • step c) is carried out as follows: placing the coated side of the PE or the PLA coated paper on a surface of the smooth cylinder, and placing the printed side of the PE or the PLA coated paper on a surface of the special cylinder.
  • step c the following steps are carried out:
  • step c the following step is carried out: cold pressing the special cylinder, and embossing the printed side of the PE or the PLA coated paper via the special cylinder.
  • a temperature of the smooth cylinder is determined by a melting point of the raw material.
  • the paper cup of the invention has a good intensity, no deformation after being filled with water, good thermal insulation and anti-sliding because of the uneven stiffeners.
  • FIG. 1 is a single layered paper cup in accordance with one embodiment of the invention
  • FIG. 2 is a single layered paper cup in accordance with another embodiment of the invention.
  • FIG. 3 is an inverted trapezoid shaped doubled layered paper cup in accordance with one embodiment of the invention.
  • FIG. 4 is a cylindrical shaped double layered paper cup in accordance with one embodiment of the invention.
  • FIG. 5 is a flow chart of a method for preparing a paper cup of the invention in accordance with one embodiment of the invention.
  • FIG. 6 is a structural diagram of an embossing device in accordance with one embodiment of the invention.
  • 1 Single layered cup body; 2 . First base; 3 . Stiffener; 4 . Printed surface; 5 . Smooth cylinder; 6 . Special cylinder; 7 . First uneven surface; 8 . Second base; 9 . Inner cup body; 10 . Outer cup body; 11 . Second uneven surface; and 12 . Smooth surface.
  • a paper cup comprises: a cup body comprising a surface, and a base. A plurality of stiffeners are arranged on the surface of the cup body.
  • the cup body is single layered, double layered, or multilayered. Hereinbelow take the single layered and the double layered paper cups as examples.
  • a paper cup comprises: a single layered cup body 1 , and a first base 2 .
  • a plurality of uneven stiffeners 3 are arranged on a surface of the single layered cup body 1 .
  • a preferable design is that an outer surface of the cup body 1 is an uneven outer surface where uneven stiffeners 3 are arranged, and an inner surface of the cup body 1 is a smooth surface.
  • both the outer and the inner surface of the single layered cup body 1 can be uneven surfaces with arrangement of uneven stiffeners 3 , because the arrangement of the uneven stiffeners 3 on the inner surface prevents water in the air from penetrating into the paper cup via the outer surface when the paper cup is filled with ice water.
  • the uneven stiffeners 3 are in regular or irregular uneven shapes, for example, circular point, strip, undulate, triangle, or polygon.
  • the paper cup is in a shape of an inverted trapezoid (as shown in FIG. 1 ) or a cylinder (as shown in FIG. 2 ).
  • the invention provides a double layered paper cup, which comprises: a double layered base 8 , and a double layered cup body.
  • the double layered cup body comprises: an inner cup body 9 , and an outer cup body 10 .
  • Each cup body comprises: an inner surface, and an outer surface.
  • Uneven stiffeners are arranged on the inner surface or the outer surface of each cup body; and the surface comprising uneven stiffeners is an uneven surface 11 .
  • the inner cup body 9 and the outer cup body 10 are tightly attached. The attachment is not limited to a usage of glue, or a thermoplastic method particularly to PE or PLA material.
  • thermoplastic method When using PE or PLA material, a lower part of the outer cup body 10 is slightly longer than a lower part of the inner cup body 9 , and the lower part of the outer cup body 10 wraps the lower part of the inner cup body 9 , then using thermoplastic method can achieve the tight attachment between the inner cup body 9 and the outer cup body 10 .
  • the thermoplastic method is more sanitary than the usage of glue.
  • the doubled layered paper cup is a shape of an inverted trapezoid (as shown in FIG. 3 ) or a cylinder (as shown in FIG. 4 ).
  • FIG. 3 An exploded view of the double layered paper of the invention is shown in FIG. 3 , the inner surface of the inner cup body 9 is a smooth surface 12 , and the outer surface of the inner cup body 9 is a second uneven surface 11 on which a plurality of uneven stiffeners are arranged.
  • the inner surface of the outer cup body 10 is a second uneven surface 11 , and the outer surface of the outer cup body 10 is the smooth surface 12 , as shown in FIG. 4 .
  • the paper cup is not limited to the structure shown in FIG. 3 , but can described in the following examples.
  • An inverted trapezoid double layered paper cup comprises: the inner cup body 9 , and the outer cup body 10 .
  • the inner surface of the inner cup body 9 is a second uneven surface 11
  • the outer surface of the inner cup body 9 is a smooth surface 12 .
  • the inner surface of the outer cup body 10 is the second uneven surface 11
  • the outer surface of the outer cup body 10 is the smooth surface 12 .
  • FIG. 4 An exploded view of a cylinder double layered paper cup is shown in FIG. 4 .
  • the paper cup comprises: an inner cup body 9 , and an outer cup body 10 .
  • An inner surface of the inner cup body 9 is a smooth surface 12
  • an outer surface of the inner cup body 9 is a second uneven surface 11 on which uneven stiffeners are arranged.
  • An inner surface of the outer cup body 10 is a smooth surface 12
  • an outer surface of the outer cup body 10 is a second uneven surface 11 .
  • each cup body 9 , 10 prevents water in the air from penetrating into the cup via the inner and the outer cup body 9 , 10 when the cup is filled with ice water; moreover, the contact surface of the inner or outer cup body 9 , 10 decreases, thereby achieving the objective of thermal insulation.
  • the uneven stiffeners are in regular or irregular uneven shapes, for example, circular point, strip, undulate, triangle, or polygon.
  • the paper cup of the present invention has a good intensity, no deformation after filling with water, good thermal insulation and anti-sliding due to the uneven stiffeners.
  • a method for preparing the paper cup as shown in FIG. 5 , comprises steps as follows:
  • S 1 select polyethylene (PE) or polylactic acid (PLA) coated paper as a raw material, according to a combination of a molecular structure and a density of the PE or the PLA, and a bulk of a paper; the PE or the PLA coated paper comprising: a coated side, and a printed side 4 .
  • a preferable raw material is the PE or the PLA, but not limited to such two materials.
  • S 3 provide an embossing device comprising a smooth cylinder and a special cylinder; place the coated side of the PE or the PLA coated paper on a surface of the smooth cylinder, and place the printed side 4 of the PE or the PLA coated paper.
  • the special cylinder 6 comprises uneven shapes arranged on a surface, thus, a first uneven surface is produced after be embossed by the special cylinder 6 , as shown in FIG. 6 .
  • a temperature of the smooth cylinder 5 is determined by a melting point of the raw material. For example, if the material is PE, the temperature of the smooth cylinder 5 is controlled at 60° C. below; and if the material is PLA, the temperature of the sooth cylinder 5 is controlled at 20° C. below.
  • another smooth cylinder can be placed next to the special cylinder shown in FIG. 4 , so that after being embossed by the special cylinder 6 , the paper is output from the smooth cylinder.
  • S 4 heat the special cylinder via a hot pressure, or heat the printed side of the PE or the PLA coated paper via an infrared ray.
  • a temperature of the special cylinder after being heated is determined by the molecular structure and the density of the PE or the PLA.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Table Devices Or Equipment (AREA)
  • Making Paper Articles (AREA)

Abstract

A paper cup, including: a cup body including a surface, and a base. A plurality of uneven stiffeners are arranged on the surface of the cup body. A method for preparing the paper cup includes: 1) selecting polyethylene (PE) or polylactic acid (PLA) coated paper as a raw material, the PE or the PLA coated paper including: a coated side, and a printed side; 2) printing a figure on the printed side of the PE or the PLA coated paper; 3) embossing uneven stiffeners on the paper via an embossing device; 4) cutting the paper into a shape of a section as a cup body via a die cutting machine; 5) shaping the cup body and the base into the paper cup via a molding machine; and 6) sterilizing, and packaging the paper cups.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is divisional application of U.S. application Ser. No. 13/786,442 filed Mar. 5, 2013, which is a continuation-in-part of International Patent Application No. PCT/CN2012/000266 with an international filing date of Mar. 2, 2012, which claims priority benefits to Chinese Patent Application No. 201110056418.0 filed on Mar. 9, 2011, and to Chinese Patent Application No. 201120161410.6 filed on May 19, 2011. The contents of all of the aforementioned applications, including any intervening amendments thereto, are incorporated herein by reference.
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The invention relates to a paper cup, and more particularly to a paper cup and a method for preparing the same.
  • 2. Description of the Related Art
  • Recently, paper cups have been widely used because of their convenience. In the market, the paper cup is single layered, which has a low intensity, and is easily deformed after being filled with hot water, plus, it is not good at heat insulating and anti-sliding.
  • A new kind of double layered paper cup including an outer cup body and an inner cup body has been disclosed. Although this structure is useful to strengthen the intensity, and has a good heat insulation capability due to the gap between the inner and the outer cup body, the gap easily causes unevenness and deformation of the cup body.
    • SUMMARY OF THE INVENTION
  • In view of the above-described problems, it is one objective of the invention to provide a paper cup and a method for preparing the same. The paper cup is anti-sliding, thermal insulated, and has an uneven surface.
  • To achieve the above objective, in accordance with one embodiment of the invention, there is provided a paper cup, comprising: a cup body comprising a surface, and a base. A plurality of uneven stiffeners are arranged on the surface of the cup body.
  • In a class of this embodiment, the cup body is a single layered cup body, and the uneven stiffeners are arranged on the surface.
  • In a class of this embodiment, the cup body is a double layered cup body comprising an inner cup body and an outer cup body. Each cup body comprises an inner surface and an outer surface. The uneven stiffeners are arranged on the inner surface or the outer surface of each cup body. The surface comprising the uneven stiffeners is an uneven surface. The inner cup body and the outer cup body are tightly attached.
  • In a class of this embodiment, the inner surface of the inner cup body is a smooth surface, and the outer surface of the inner cup body is the uneven surface; or the inner surface of the inner cup body is the uneven surface, and the outer surface of the inner cup body is the smooth surface; or the inner surface of the outer cup body is the smooth surface, and the outer surface of the outer cup body is the uneven surface; or the inner surface of the outer cup body is the uneven surface, and the outer surface of the outer cup body is the smooth surface.
  • In a class of this embodiment, the uneven stiffeners are in regular or irregular uneven shapes; the uneven shapes are circular point, strip, undulate, triangle, or polygon; and the paper cup is in a shape of an inverted trapezoid or a cylinder.
  • A method for preparing the paper cup, comprises:
  • a) selecting polyethylene (PE) or polylactic acid (PLA) coated paper as a raw material, the PE or the PLA coated paper comprising: a coated side, and a printed side;
  • b) printing a figure on the printed side of the PE or the PLA coated paper;
  • c) embossing uneven stiffeners on the paper via an embossing device;
  • d) cutting the paper into a shape of a section as a cup body via a die cutting machine;
  • e) shaping the cup body and the base into the paper cup via a molding machine; and
  • f) sterilizing, and packaging the paper cups.
  • In a class of this embodiment, the embossing device comprises: a smooth cylinder, and a special cylinder comprising uneven shapes, and step c) is carried out as follows: placing the coated side of the PE or the PLA coated paper on a surface of the smooth cylinder, and placing the printed side of the PE or the PLA coated paper on a surface of the special cylinder.
  • In a class of this embodiment, after step c), the following steps are carried out:
  • 1) heating the special cylinder via a hot pressure, or heating the printed side of the PE or the PLA coated paper via an infrared ray; and embossing the printed side via the special cylinder; and
  • 2) placing the paper after being embossed into cooling equipment for fixing the uneven surface.
  • In a class of this embodiment, a temperature of the special cylinder after being heated is determined by the molecular structure and the density of the PE or the PLA.
  • In a class of this embodiment, after step c), the following step is carried out: cold pressing the special cylinder, and embossing the printed side of the PE or the PLA coated paper via the special cylinder.
  • In a class of this embodiment, a temperature of the smooth cylinder is determined by a melting point of the raw material.
  • Advantages of the invention are summarized as follows:
  • The paper cup of the invention has a good intensity, no deformation after being filled with water, good thermal insulation and anti-sliding because of the uneven stiffeners.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention is described hereinbelow with reference to the accompanying drawings, in which:
  • FIG. 1 is a single layered paper cup in accordance with one embodiment of the invention;
  • FIG. 2 is a single layered paper cup in accordance with another embodiment of the invention;
  • FIG. 3 is an inverted trapezoid shaped doubled layered paper cup in accordance with one embodiment of the invention;
  • FIG. 4 is a cylindrical shaped double layered paper cup in accordance with one embodiment of the invention;
  • FIG. 5 is a flow chart of a method for preparing a paper cup of the invention in accordance with one embodiment of the invention; and
  • FIG. 6 is a structural diagram of an embossing device in accordance with one embodiment of the invention.
  • In the drawings, the following reference numbers are used: 1. Single layered cup body; 2. First base; 3. Stiffener; 4. Printed surface; 5. Smooth cylinder; 6. Special cylinder; 7. First uneven surface; 8. Second base; 9. Inner cup body; 10. Outer cup body; 11. Second uneven surface; and 12. Smooth surface.
    •  DETAILED DESCRIPTION OF THE EMBODIMENTS
  • Detailed description of the invention will be given below in conjunction with accompanying drawings.
  • A paper cup, comprises: a cup body comprising a surface, and a base. A plurality of stiffeners are arranged on the surface of the cup body. The cup body is single layered, double layered, or multilayered. Hereinbelow take the single layered and the double layered paper cups as examples.
  • As shown in FIGS. 1-2, a paper cup, comprises: a single layered cup body 1, and a first base 2. A plurality of uneven stiffeners 3 are arranged on a surface of the single layered cup body 1. A preferable design is that an outer surface of the cup body 1 is an uneven outer surface where uneven stiffeners 3 are arranged, and an inner surface of the cup body 1 is a smooth surface. Optionally, both the outer and the inner surface of the single layered cup body 1 can be uneven surfaces with arrangement of uneven stiffeners 3, because the arrangement of the uneven stiffeners 3 on the inner surface prevents water in the air from penetrating into the paper cup via the outer surface when the paper cup is filled with ice water.
  • The uneven stiffeners 3 are in regular or irregular uneven shapes, for example, circular point, strip, undulate, triangle, or polygon.
  • The paper cup is in a shape of an inverted trapezoid (as shown in FIG. 1) or a cylinder (as shown in FIG. 2).
  • Besides, the invention provides a double layered paper cup, which comprises: a double layered base 8, and a double layered cup body. The double layered cup body comprises: an inner cup body 9, and an outer cup body 10. Each cup body comprises: an inner surface, and an outer surface. Uneven stiffeners are arranged on the inner surface or the outer surface of each cup body; and the surface comprising uneven stiffeners is an uneven surface 11. The inner cup body 9 and the outer cup body 10 are tightly attached. The attachment is not limited to a usage of glue, or a thermoplastic method particularly to PE or PLA material. When using PE or PLA material, a lower part of the outer cup body 10 is slightly longer than a lower part of the inner cup body 9, and the lower part of the outer cup body 10 wraps the lower part of the inner cup body 9, then using thermoplastic method can achieve the tight attachment between the inner cup body 9 and the outer cup body 10. The thermoplastic method is more sanitary than the usage of glue.
  • The doubled layered paper cup is a shape of an inverted trapezoid (as shown in FIG. 3) or a cylinder (as shown in FIG. 4).
  • An exploded view of the double layered paper of the invention is shown in FIG. 3, the inner surface of the inner cup body 9 is a smooth surface 12, and the outer surface of the inner cup body 9 is a second uneven surface 11 on which a plurality of uneven stiffeners are arranged. The inner surface of the outer cup body 10 is a second uneven surface 11, and the outer surface of the outer cup body 10 is the smooth surface 12, as shown in FIG. 4.
  • However, the paper cup is not limited to the structure shown in FIG. 3, but can described in the following examples.
    • Example 1
  • An inverted trapezoid double layered paper cup, comprises: the inner cup body 9, and the outer cup body 10. The inner surface of the inner cup body 9 is a smooth surface 12, and the outer surface of the inner cup body 9 is a second uneven surface 11. The inner surface of the outer cup body 10 is the smooth surface 12, and the outer surface of the outer cup body 10 is the second uneven surface 11.
    • Example 2
  • An inverted trapezoid double layered paper cup, comprises: the inner cup body 9, and the outer cup body 10. The inner surface of the inner cup body 9 is a second uneven surface 11, and the outer surface of the inner cup body 9 is a smooth surface 12. The inner surface of the outer cup body 10 is the smooth surface 12, and the outer surface of the outer cup body 10 is the second uneven surface 11.
    • Example 3
  • An inverted trapezoid double layered paper cup, comprises: the inner cup body 9, and the outer cup body 10. The inner surface of the inner cup body 9 is a second uneven surface 11, and the outer surface of the inner cup body 9 is a smooth surface 12. The inner surface of the outer cup body 10 is the second uneven surface 11, and the outer surface of the outer cup body 10 is the smooth surface 12.
  • An exploded view of a cylinder double layered paper cup is shown in FIG. 4. The paper cup comprises: an inner cup body 9, and an outer cup body 10. An inner surface of the inner cup body 9 is a smooth surface 12, and an outer surface of the inner cup body 9 is a second uneven surface 11 on which uneven stiffeners are arranged. An inner surface of the outer cup body 10 is a smooth surface 12, and an outer surface of the outer cup body 10 is a second uneven surface 11.
  • The arrangement of the stiffeners on the inner or outer surface of each cup body 9, 10 prevents water in the air from penetrating into the cup via the inner and the outer cup body 9, 10 when the cup is filled with ice water; moreover, the contact surface of the inner or outer cup body 9, 10 decreases, thereby achieving the objective of thermal insulation.
  • The uneven stiffeners are in regular or irregular uneven shapes, for example, circular point, strip, undulate, triangle, or polygon.
  • The paper cup of the present invention has a good intensity, no deformation after filling with water, good thermal insulation and anti-sliding due to the uneven stiffeners.
  • A method for preparing the paper cup, as shown in FIG. 5, comprises steps as follows:
  • S1: select polyethylene (PE) or polylactic acid (PLA) coated paper as a raw material, according to a combination of a molecular structure and a density of the PE or the PLA, and a bulk of a paper; the PE or the PLA coated paper comprising: a coated side, and a printed side 4. It should be noted that a preferable raw material is the PE or the PLA, but not limited to such two materials.
  • S2: print a desired figure on the printed side 4 of the PE or the PLA coated paper.
  • Thereafter, place the paper after being printed on an embossing device to emboss uneven stiffeners, which specifically comprises S3-S6, or comprises S3 and S7.
  • S3, provide an embossing device comprising a smooth cylinder and a special cylinder; place the coated side of the PE or the PLA coated paper on a surface of the smooth cylinder, and place the printed side 4 of the PE or the PLA coated paper. The special cylinder 6 comprises uneven shapes arranged on a surface, thus, a first uneven surface is produced after be embossed by the special cylinder 6, as shown in FIG. 6. A temperature of the smooth cylinder 5 is determined by a melting point of the raw material. For example, if the material is PE, the temperature of the smooth cylinder 5 is controlled at 60° C. below; and if the material is PLA, the temperature of the sooth cylinder 5 is controlled at 20° C. below.
  • In order to get a better embossing effect, another smooth cylinder can be placed next to the special cylinder shown in FIG. 4, so that after being embossed by the special cylinder 6, the paper is output from the smooth cylinder.
  • S4: heat the special cylinder via a hot pressure, or heat the printed side of the PE or the PLA coated paper via an infrared ray. A temperature of the special cylinder after being heated is determined by the molecular structure and the density of the PE or the PLA.
  • S5: emboss the printed side via the special cylinder after heating.
  • S6: place the paper after being embossed into cooling equipment for fixing the uneven surface.
  • S7: cold press the special cylinder, and emboss the printed side of the PE or the PLA coated paper via the special cylinder.
  • S8: cut the paper into a shape of a section as a cup body via a die cutting machine;
  • S9: shape the cup body and the base into the paper cup via a molding machine; and
  • S10: sterilize, and pack the paper cups.
  • While particular embodiments of the invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects, and therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims (8)

What is claimed is:
1. A paper cup, comprising: a cup body comprising a surface, and a base; wherein a plurality of uneven stiffeners are arranged on the surface of the cup body.
2. The paper cup of claim 1, wherein the cup body is a single layered cup body, and the uneven stiffeners are arranged on the surface.
3. The paper cup of claim 1, wherein
the cup body is a double layered cup body comprising an inner cup body and an outer cup body;
each cup body comprises: an inner surface, and an outer surface; the uneven stiffeners are arranged on the inner surface or the outer surface of each cup body;
the surface comprising the uneven stiffeners is an uneven surface; and
the inner cup body and the outer cup body are tightly attached.
4. The paper cup of claim 3, wherein
the inner surface of the inner cup body is a smooth surface, and the outer surface of the inner cup body is the uneven surface;
the inner surface of the inner cup body is the uneven surface, and the outer surface of the inner cup body is the smooth surface;
the inner surface of the outer cup body is the smooth surface, and the outer surface of the outer cup body is the uneven surface; or
the inner surface of the outer cup body is the uneven surface, and the outer surface of the outer cup body is the smooth surface.
5. The paper cup of claim 2, wherein
the uneven stiffeners are in regular or irregular uneven shapes;
the uneven shapes are circular point, strip, undulate, triangle, or polygon; and
the paper cup is in a shape of an inverted trapezoid or a cylinder.
6. The paper cup of claim 3, wherein
the uneven stiffeners are in regular or irregular uneven shapes;
the uneven shapes are circular point, strip, undulate, triangle, or polygon; and
the paper cup is in a shape of an inverted trapezoid or a cylinder.
7. The paper cup of claim 4, wherein the uneven stiffeners are in regular or irregular uneven shapes;
the uneven shapes are circular point, strip, undulate, triangle, or polygon; and
the paper cup is in a shape of an inverted trapezoid or a cylinder.
8. The paper cup of claim 1, wherein
the paper cup is made from polyethylene (PE) or polylactic acid (PLA) coated paper material.
US14/849,583 2011-03-09 2015-09-09 Paper cup and method for preparing the same Abandoned US20150375890A1 (en)

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CN2011201614106U CN202044019U (en) 2011-05-19 2011-05-19 Double-layer heat insulation paper cup
CN201120161410.6 2011-05-19
PCT/CN2012/000266 WO2012119482A1 (en) 2011-03-09 2012-03-02 Paper cup and manufacturing process thereof
US13/786,442 US9162790B2 (en) 2011-03-09 2013-03-05 Method for preparing paper cup
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US9162790B2 (en) 2015-10-20
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AU2012225104A1 (en) 2013-12-19
US20130175267A1 (en) 2013-07-11

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