WO2006042908A1 - Tasse en papier et méthode pour la fabriquer - Google Patents

Tasse en papier et méthode pour la fabriquer Download PDF

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Publication number
WO2006042908A1
WO2006042908A1 PCT/FI2005/050364 FI2005050364W WO2006042908A1 WO 2006042908 A1 WO2006042908 A1 WO 2006042908A1 FI 2005050364 W FI2005050364 W FI 2005050364W WO 2006042908 A1 WO2006042908 A1 WO 2006042908A1
Authority
WO
WIPO (PCT)
Prior art keywords
sidewall
scores
cup
ribs
blank
Prior art date
Application number
PCT/FI2005/050364
Other languages
English (en)
Inventor
Pekka Vähävihu
Olavi Torkkel
Original Assignee
Huhtamäki Oyj
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 Huhtamäki Oyj filed Critical Huhtamäki Oyj
Publication of WO2006042908A1 publication Critical patent/WO2006042908A1/fr

Links

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
    • B65D3/22—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
    • 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
    • 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
    • B65D81/3865—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 drinking cups or like containers
    • B65D81/3874—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 drinking cups or like containers formed of different materials, e.g. laminated or foam filling between walls

Definitions

  • the present invention relates to a paper cup especially suitable for use with hot or cold beverage or food.
  • the invention also relates to a method for making such a paper cup.
  • Japanese Patent Application 2003-276722 discloses a paper cup having a plurality of rib-like protrusions formed in the periphery of the upper part of the cup.
  • a paper cup is first formed and protruding portions are then formed on the cup body.
  • the protruding portions thus formed are crushed to form the rib-like protrusions, that is, pleats. Forming such pleats is complicated and requires additional process steps. The crushed pleats have rather large dimensions, which is why they tend to distort the printing provided on the outer surface of the cup.
  • US Patent No. 5,415,339 discloses a paper cup with open ribbed sidewall.
  • the cup is characterized by a plurality of vertically oriented, generally triangular pro- jections which extend from the sidewall of the cup and have an open base that is disposed toward the liquid holding cavity.
  • the ribs are of rather large dimensions, their height decreasing from the bottom of the cup towards the top of it.
  • Such cups do not stack well. Furthermore, these ribs tend to distort the printing provided on the outer surface of the cup. It is an object of the present invention to solve the above-mentioned problems by providing a stackable paper cup, which is comfortable to hold, easy to manufac ⁇ ture and able to display an excellent printed appearance.
  • the paper cup is characterised in that the sidewall has a plurality of spaced apart scores formed in the inner surface of the sidewall, which scores form a plurality of spaced apart ribs in the outer surface of the sidewall, and the scores are provided in a sufficient number to permit a user to grip the cup with the primary contact being made with the ribs rather than with the spacings between the ribs.
  • the method for making a paper cup comprises the steps of providing a sidewall blank and a bottom; joining the edges of the sidewall blank together to form a sidewall; and attaching the bottom to the sidewall to form a cup.
  • the method is characterised by the steps of:
  • the number of the scores and ribs in the circumference of the cup is higher than 30, advantageously higher than 40, and most preferably higher than 50.
  • the smooth spacings between the scores will have a breadth of less than 8 mm, advantageously less than 6 mm, and most preferably less than 4 mm.
  • the breadth of the scores is supposed to be less than 2 mm, advantageously less than 1.5 mm, and most preferably less than 1 mm.
  • the ribs are formed while the sidewall blank is being cut from a paper or board substrate. Scores and ribs are formed by pressing the paper substrate be ⁇ tween a male and female die. This action causes a plastic deformation in the pa ⁇ per, allowing the paper to fold more easily without cracking. In the present case, scores are not formed to make the sidewall easier to fold but to form ribs in the opposite surface of the sidewall. The ribs thus formed are so small that they do not damage the visual appearance of the printing on the exterior surface of the cup.
  • the scores may run substantially rectilinearly from the proximity of the bottom of the cup to the proximity of the top of the cup, or they may run diagonally from the proximity of the bottom of the cup to the proximity of the top of the cup.
  • the depth of the scores is 0.5-1.5 times the thickness of the sidewall.
  • the method may further comprise the steps of printing the paper substrate, appli ⁇ cation of a layer of expandable varnish onto the printed surface, and heating the finished cup to make the varnish expand, giving the outer surface of the cup a soft finish. It has been noticed that such a surface makes the cup feel less hot when containing hot liquid.
  • the varnish may comprise a polymeric dispersion contain- ing a component that expands when heated to a temperature above 100 0 C.
  • Figure 1 is a partially sectional side view of a cup according to the present inven ⁇ tion.
  • Figure 2 is an enlarged cross-sectional view taken along line 2-2 in Figure 1.
  • Figure 3 is a plan view of the sidewall blank used in making the cup.
  • Figure 4 is a plan view of a sidewall blank with an alternative layout.
  • a paper cup 10 according to the present invention is shown.
  • the cup 10 comprises a bottom 12 and a conical sidewall 11 attached to the bottom 12.
  • the upper edge of the sidewall 11 is bent to form a bead 13.
  • the sidewall 11 has a plurality of elongate, substantially vertical scores 25 formed in it, which scores 25 form corresponding ribs 24 in the opposite surface of the sidewall 11.
  • the scores 25 face the inside of the cup 10 and the ribs face the out ⁇ side of the cup 10.
  • the ribs 24 are spaced by smooth spacings 19.
  • Figure 2 illustrates the cross- sectional structure of the sidewall 11.
  • the sidewall 11 is made of paper or paperboard 20, the inner surface of which is coated with polymeric material 21 which acts as a moisture barrier and which also aids in seam sealing during the cup construction.
  • the outer surface of the paper layer 20 comprises a printed layer 22, which is further covered with a layer of varnish 23 that is apt to give the surface a soft finish.
  • Figure 2 also shows a score 25 and a corresponding rib 24 that have been formed in the sidewall 11 by scoring or creasing.
  • the rib 24 protrudes outward while the score 25 faces the inside of the cup. It has been noticed that the height of the ribs 24 need not be extremely high to make the surface of the cup feel less hot to fin ⁇ gers.
  • the depth h of the scores 25 is 0.5 - 1.5 times the thickness H of the sidewall 11.
  • the ribs 24 are so shallow that they do not preclude close nesting of an overlying cup inside an underlying cup.
  • Figure 3 illustrates a blank 11' that can be used in making the sidewall 11 of the cup 10.
  • the blank 11' has an arcuate bottom 15, an arcuate top 16 and two joining edges 17, 18, which diverge from the bottom 15 to the top 16.
  • a plurality of elon ⁇ gate ribs 24, which are separated by smooth spacings 19, have been formed onto the blank 11' by scoring, preferably in connection with the blank cutting opera ⁇ tion.
  • the joining edges 17 and 18 are smooth to facilitate their joining together, but otherwise the whole width of the blank 11' is provided with ribs 24, which terminate in a spaced relationship to the bottom 15 and the top 16.
  • the width of the smooth spac- ings 19 between two adjacent ribs 24 increases a bit from the bottom 15 toward the top 16.
  • Figure 4 shows an alternative design of a sidewall blank 11' where the ribs 24 are not upright but sloping.
  • a substrate is provided that com ⁇ prises a layer of paper or paperboard 20, one surface of which is coated with polymeric material 21 which is able to act as a barrier against moisture transmis- sion.
  • the polymeric material may comprise e.g. polyethylene, polypropylene, or the like.
  • the substrate is passed to die cutting and creasing, where a sidewall blank 11 ' is cut from the paper substrate and, simultaneously, the blank 11' is scored.
  • Scores 25 and corresponding ribs 24 are formed by locally pressing and stretching the paper substrate by means of a male and a female die, the male die comprising at least one creasing rule and the female die comprising at least one groove.
  • the blank 11' is wrapped around a mandrel to bring the opposite joining edges 17 and 18 into overlapping relation to each other. The overlapping edges are joined to each other to form a continuous container sidewall 11. While the sidewall blank remains in position on the mandrel, the bottom 12 is attached to the sidewall 11 and a bead 13 is rolled around the upper edge of the sidewall to complete cup assembly.
  • the method for making the cup may further contain steps in which the substrate is printed and a layer of varnish 23 is applied onto the printed surface 22.
  • the var- nish is preferably of a type that is able to give a soft, velvety surface when heated to a temperature above 100 0 C. After the cup has been assembled, it is exposed to heat treatment in order to give the cup sidewall a soft finish.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

Tasse en papier (10) comprenant une paroi latérale (11) possédant une pluralité d’entailles espacées (25) formées dans la surface intérieure de celle-ci, lesdites entailles (25) formant une pluralité de nervures espacées (24) dans la surface externe de ladite paroi latérale (11). La tasse ci-décrite convient aux boissons chaudes car les nervures saillant vers l’extérieur (24) réduisent le contact entre la tasse (10) et les doigts de l’utilisateur. Pour façonner la tasse en papier, une découpe de paroi latérale est créé et une pluralité d’entailles espacées (25) est formée dans la première surface intérieure de découpe de paroi latérale, lesdites entailles (25) formant une pluralité de nervures espacées (24) dans la surface opposée de découpe de paroi latérale. La tasse est alors constituée de façon que les nervures (24) soient tournées vers l’extérieur de la tasse (10) et les entailles (24) vers l’intérieur de la tasse (10). Les entailles (25) sont formées de préférence pendant que la découpe de paroi est découpée dans un substrat en papier.
PCT/FI2005/050364 2004-10-22 2005-10-20 Tasse en papier et méthode pour la fabriquer WO2006042908A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20041370 2004-10-22
FI20041370A FI20041370A0 (fi) 2004-10-22 2004-10-22 Paperikuppi ja menetelmä sen valmistamiseksi

Publications (1)

Publication Number Publication Date
WO2006042908A1 true WO2006042908A1 (fr) 2006-04-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2005/050364 WO2006042908A1 (fr) 2004-10-22 2005-10-20 Tasse en papier et méthode pour la fabriquer

Country Status (2)

Country Link
FI (1) FI20041370A0 (fr)
WO (1) WO2006042908A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130175267A1 (en) * 2011-03-09 2013-07-11 Shanghai Xinyu Paper Cup Co., Ltd. Paper cup and method for preparing the same
US8715449B2 (en) 2011-06-17 2014-05-06 Berry Plastics Corporation Process for forming an insulated container having artwork
US8883280B2 (en) 2011-08-31 2014-11-11 Berry Plastics Corporation Polymeric material for an insulated container
US9102461B2 (en) 2011-06-17 2015-08-11 Berry Plastics Corporation Insulated sleeve for a cup
US9150344B2 (en) 2012-12-14 2015-10-06 Berry Plastics Corporation Blank for container
US9562140B2 (en) 2013-08-16 2017-02-07 Berry Plastics Corporation Polymeric material for an insulated container
US9688456B2 (en) 2012-12-14 2017-06-27 Berry Plastics Corporation Brim of an insulated container
US9713906B2 (en) 2012-08-07 2017-07-25 Berry Plastics Corporation Cup-forming process and machine
US9725202B2 (en) 2013-03-14 2017-08-08 Berry Plastics Corporation Container
US9758292B2 (en) 2011-06-17 2017-09-12 Berry Plastics Corporation Insulated container
US9758655B2 (en) 2014-09-18 2017-09-12 Berry Plastics Corporation Cellular polymeric material
US9840049B2 (en) 2012-12-14 2017-12-12 Berry Plastics Corporation Cellular polymeric material
US9957365B2 (en) 2013-03-13 2018-05-01 Berry Plastics Corporation Cellular polymeric material
US9993098B2 (en) 2011-06-17 2018-06-12 Berry Plastics Corporation Insulated container with molded brim
US10011696B2 (en) 2012-10-26 2018-07-03 Berry Plastics Corporation Polymeric material for an insulated container
US10513589B2 (en) 2015-01-23 2019-12-24 Berry Plastics Corporation Polymeric material for an insulated container
US11091311B2 (en) 2017-08-08 2021-08-17 Berry Global, Inc. Insulated container and method of making the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000043954A (ja) * 1998-07-30 2000-02-15 Toppan Printing Co Ltd 紙製断熱容器
JP2001232734A (ja) * 2000-02-24 2001-08-28 Toppan Printing Co Ltd 断熱性積層シートと該積層シートを用いた断熱カップ
JP2003054653A (ja) * 2001-08-20 2003-02-26 Dainippon Printing Co Ltd 電子レンジ用カップ
JP2003180284A (ja) * 2001-12-21 2003-07-02 Tokan Kogyo Co Ltd 納豆用紙コップ容器
JP2003276722A (ja) * 2002-03-20 2003-10-02 Dainippon Printing Co Ltd リブ付き紙カップ及びその製造方法
JP2003321020A (ja) * 2002-04-26 2003-11-11 Oji Paper Co Ltd 断熱容器用の紙及びその紙を胴部に使用した紙カップ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000043954A (ja) * 1998-07-30 2000-02-15 Toppan Printing Co Ltd 紙製断熱容器
JP2001232734A (ja) * 2000-02-24 2001-08-28 Toppan Printing Co Ltd 断熱性積層シートと該積層シートを用いた断熱カップ
JP2003054653A (ja) * 2001-08-20 2003-02-26 Dainippon Printing Co Ltd 電子レンジ用カップ
JP2003180284A (ja) * 2001-12-21 2003-07-02 Tokan Kogyo Co Ltd 納豆用紙コップ容器
JP2003276722A (ja) * 2002-03-20 2003-10-02 Dainippon Printing Co Ltd リブ付き紙カップ及びその製造方法
JP2003321020A (ja) * 2002-04-26 2003-11-11 Oji Paper Co Ltd 断熱容器用の紙及びその紙を胴部に使用した紙カップ

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9162790B2 (en) * 2011-03-09 2015-10-20 Shanghai Xinyu Paper Cup Co., Ltd. Method for preparing paper cup
US20130175267A1 (en) * 2011-03-09 2013-07-11 Shanghai Xinyu Paper Cup Co., Ltd. Paper cup and method for preparing the same
US9993098B2 (en) 2011-06-17 2018-06-12 Berry Plastics Corporation Insulated container with molded brim
US8715449B2 (en) 2011-06-17 2014-05-06 Berry Plastics Corporation Process for forming an insulated container having artwork
US9758292B2 (en) 2011-06-17 2017-09-12 Berry Plastics Corporation Insulated container
US9067705B2 (en) 2011-06-17 2015-06-30 Berry Plastics Corporation Process for forming an insulated container having artwork
US9975687B2 (en) 2011-06-17 2018-05-22 Berry Plastics Corporation Process for forming an insulated container having artwork
US9758293B2 (en) 2011-06-17 2017-09-12 Berry Plastics Corporation Insulative container
US9346605B2 (en) 2011-06-17 2016-05-24 Berry Plastics Corporation Insulative container
US9358772B2 (en) 2011-06-17 2016-06-07 Berry Plastics Corporation Process for forming an insulated container having artwork
US9102461B2 (en) 2011-06-17 2015-08-11 Berry Plastics Corporation Insulated sleeve for a cup
US9694962B2 (en) 2011-06-17 2017-07-04 Berry Plastics Corporation Process for forming an insulated container having artwork
US9102802B2 (en) 2011-08-31 2015-08-11 Berry Plastics Corporation Polymeric material for an insulated container
US10428195B2 (en) 2011-08-31 2019-10-01 Berry Plastics Corporation Polymeric material for an insulated container
US8883280B2 (en) 2011-08-31 2014-11-11 Berry Plastics Corporation Polymeric material for an insulated container
US9783649B2 (en) 2011-08-31 2017-10-10 Berry Plastics Corporation Polymeric material for an insulated container
US9624348B2 (en) 2011-08-31 2017-04-18 Berry Plastic Corporation Polymeric material for an insulated container
US9713906B2 (en) 2012-08-07 2017-07-25 Berry Plastics Corporation Cup-forming process and machine
US10011696B2 (en) 2012-10-26 2018-07-03 Berry Plastics Corporation Polymeric material for an insulated container
US9840049B2 (en) 2012-12-14 2017-12-12 Berry Plastics Corporation Cellular polymeric material
US9150344B2 (en) 2012-12-14 2015-10-06 Berry Plastics Corporation Blank for container
US9731888B2 (en) 2012-12-14 2017-08-15 Berry Plastics Corporation Blank for container
US9688456B2 (en) 2012-12-14 2017-06-27 Berry Plastics Corporation Brim of an insulated container
US9957365B2 (en) 2013-03-13 2018-05-01 Berry Plastics Corporation Cellular polymeric material
US9725202B2 (en) 2013-03-14 2017-08-08 Berry Plastics Corporation Container
US10046880B2 (en) 2013-03-14 2018-08-14 Berry Plastics Corporation Container
US10633139B2 (en) 2013-03-14 2020-04-28 Berry Plastics Corporation Container
US9562140B2 (en) 2013-08-16 2017-02-07 Berry Plastics Corporation Polymeric material for an insulated container
US9758655B2 (en) 2014-09-18 2017-09-12 Berry Plastics Corporation Cellular polymeric material
US10513589B2 (en) 2015-01-23 2019-12-24 Berry Plastics Corporation Polymeric material for an insulated container
US11091311B2 (en) 2017-08-08 2021-08-17 Berry Global, Inc. Insulated container and method of making the same
US11214429B2 (en) 2017-08-08 2022-01-04 Berry Global, Inc. Insulated multi-layer sheet and method of making the same

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