EP0722892A1 - Plateau en carton moulé par soufflage avec des flancs pratiquement verticaux et un couvercle séparé - Google Patents

Plateau en carton moulé par soufflage avec des flancs pratiquement verticaux et un couvercle séparé Download PDF

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Publication number
EP0722892A1
EP0722892A1 EP96400117A EP96400117A EP0722892A1 EP 0722892 A1 EP0722892 A1 EP 0722892A1 EP 96400117 A EP96400117 A EP 96400117A EP 96400117 A EP96400117 A EP 96400117A EP 0722892 A1 EP0722892 A1 EP 0722892A1
Authority
EP
European Patent Office
Prior art keywords
tray
lid
container
wall panels
partition
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.)
Withdrawn
Application number
EP96400117A
Other languages
German (de)
English (en)
Inventor
Todd Hunter Huffman
William Roger Rigby
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.)
Westvaco Corp
Original Assignee
Westvaco Corp
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 Westvaco Corp filed Critical Westvaco Corp
Publication of EP0722892A1 publication Critical patent/EP0722892A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B65D81/34—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/343—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated in a conventional oven, e.g. a gas or electric resistance oven
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/48—Partitions
    • B65D5/48002—Partitions integral
    • B65D5/48022—Partitions integral formed by two parallel panels located in the base of a tray being folded up towards each other
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/64—Lids

Definitions

  • This invention relates generally to the art of food packaging and more particularly to a container for packaging, storing and heating food.
  • Such structures of this type generally, are constructed with near vertical sidewalls and a separate lid such that the trays are easily nestable and remain stable when the lid is removed.
  • a plastic film such as polyester (PE), polypropylene (PP), or polyethylene terephthalate (PET) is laminated to the paperboard. It is well known that this laminated film is undesirable because when folded it contains pin holes in the areas adjacent to the corners of the tray and lid which are susceptible to contamination by outside influences. Therefore, a more advantageous container would be one which would remain stable after the lid is removed and included a more desirable food contact coating.
  • PE polyester
  • PP polypropylene
  • PET polyethylene terephthalate
  • this invention fulfills these needs by providing a partitioned paperboard food container, wherein the container is comprised of: a partitioned tray means including a paperboard sheet material tray base having an interior surface lined with a continuous and unlapped layer of a food contact coating applied to the interior surface, wherein the base is formed into at least two bottom panel areas; at least two internal wall panels materially integral with each of the at least two bottom panel areas such that the internal wall panels form a partition in the tray; at least two external wall panels materially integral with each of the at least two bottom panel areas; a first and second top flange means located adjacent to the at least two external wall panels; and a lid means releasably attached to the tray means and including a paperboard sheet material lid base having an interior surface lined with a continuous and unlapped layer of a food contact coating applied to the interior surface, wherein the lid base includes a first and second wall closure flap means operatively connected to the lid base and adapted to overlap the first flange means wherein the first wall closure flap
  • the base is formed into three bottom panel areas which requires three partitions.
  • the wall closure flap means may extend down over all of the exterior wall panels.
  • the wall closure flap means are attached to the external wall panels by an adhesive.
  • the location of the wall closure flaps provides stability to the container both before and after the lid is removed.
  • the preferred container offers the following advantages: ease of assembly; excellent stability; good durability; and excellent economy. In fact, in many of the preferred embodiments, these factors of stability and economy are optimized to an extent that is considerably higher than heretofore achieved in prior, known paperboard containers.
  • the basic substrate material for the present invention is a machine made paperboard which may range in thickness from 0.1778 mm to 0.889 mm (0.007 to 0.035 inches). In some cases, it may be desirable to coat the paperboard web stock on that web side to be formed to the interior of the tray with a film of extruded press-applied polymer selected on the basis of chemical and adhesive receptivity in those cases where the interior surface is subsequently applied with a blow molded polymer. However, due to the fact that extruded blow molded polymers of the type and nature anticipated by the present invention are applied to paperboard blank mold liners at various temperatures, viscosities and pressures, many tie films of paperboard substrates become unnecessary. In this manner, the blow molded polymer bonds deeply and securely to the paperboard surface.
  • FIG. 1 illustrates container 2 which includes, in part, lid 4 and divided tray 20. More particularly, a lid 4 includes, conventional polymeric coating 6, wall closure flap 8, panels 9 and 10 and tear line 12.
  • tray 20 includes, bottom panels 22, internal walls 24, external walls 26, flanges 28 and 30, patterned adhesive area 32, and partition 34. It should be noted that flanges 28 extend away from internal walls 24 while flanges 30 extend toward internal walls 24. Also, another patterned adhesive area 32 is located on the back of tray 20.
  • FIG. 2 shows that lid 4 is attached to tray 20 by wall closure flap 14 and adhesive area 32 (in back of tray 20). Also, as shown in Figure 2, wall closure flap 8 has been released from tray 20 in that tear line 12 has been activated according to conventional techniques and panel 10 remains on tray 20. In this manner, panel 10 spans across an end of partition 34 to add structural rigidity to tray 20. The location of panel 10 across the end of partition 34 acts as a "brace" such that tray 20 cannot bend and/or flex along internal walls 24 at partition 34 either before or after the tray is opened.
  • FIG 3 shows container 50.
  • container 50 includes, in part, lid 4 and tray 52.
  • Lid 4 preferably, is constructed in the same manner as the lid 4 shown in the Figures 1 and 2.
  • Tray 52 includes, in part, bottom panels 54, internal walls 56, external walls 58, flanges 60 and 62, patterned adhesive areas 64, and partition 66. Also, another patterned adhesive area 64 is located on the back of tray 52.
  • lid 4 is adhered to tray 52 along adhesive areas 64 (located on the back of tray 52).
  • wall closure flap 8 spans across an end of partition 66 to add structural rigidity to container 50.
  • tear line 12 on lid 4 is conventionally activated such that lid 4 is released from tray 52.
  • lid 4 and panel 9 are raised above tray 52.
  • panel 10 remains adhered to tray 52 such that panel 10 extends across an end of partition 66 found between internal walls 56 in order to add structural rigidity to tray 52 during the consumption of the food contents within tray 52.
  • container 100 includes, in part, lid 104 and tray 52.
  • Tray 52 preferably, is constructed in the same manner as tray 52 in Figure 3, except that flange 60 is folded inward towards internal walls 56.
  • Lid 104 includes in part, conventional polymer coating 106 and wall closure flaps 108.
  • wall flaps 108 include, panels 109 and 110 and conventional tear lines 112.
  • container 100 With respect to the construction of container 100, after the food contents within container 100 are heated by conventional heating techniques, the consumer removes lid 104 along tear line 112. After tear lines 112 are activated, panels 110 remain adhered to tray 52 across an end of partition 66 such that panels 110 add structional rigidity to tray 52 while the food contents within tray 52 are being consumed.
  • flanges 30 ( Figure 1), 62 ( Figure 3), and 60 and 62 ( Figure 4) are folded inwardly towards their respective internal side walls such that the containers 2, 50 and 100, respectively, when completely constructed, can be pushed through a conventional plate freezer on their near vertical sides.
  • this construction allows the containers to be stacked on a shelf on their near vertical sides.
  • the location of the panels 10 and 110 across ends of partitions 34 and 66, respectively, provide improved structional rigidity to the containers. In particular, without the panels 10 and 110 being located across ends of the partitions, the trays 20 and 52 could easily bend or twist at the partitions. Even when the trays lids are removed, the panels, which are adhesively attached to the external side walls, remain in place to provide the desired tray rigidity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Cartons (AREA)
  • Packages (AREA)
  • Package Specialized In Special Use (AREA)
EP96400117A 1995-01-17 1996-01-17 Plateau en carton moulé par soufflage avec des flancs pratiquement verticaux et un couvercle séparé Withdrawn EP0722892A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37343095A 1995-01-17 1995-01-17
US373430 1995-01-17

Publications (1)

Publication Number Publication Date
EP0722892A1 true EP0722892A1 (fr) 1996-07-24

Family

ID=23472382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96400117A Withdrawn EP0722892A1 (fr) 1995-01-17 1996-01-17 Plateau en carton moulé par soufflage avec des flancs pratiquement verticaux et un couvercle séparé

Country Status (7)

Country Link
EP (1) EP0722892A1 (fr)
JP (1) JPH08253271A (fr)
AU (1) AU4094596A (fr)
CA (1) CA2167022A1 (fr)
CZ (1) CZ11896A3 (fr)
HU (1) HUP9600096A2 (fr)
PL (1) PL312348A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2326404A (en) * 1997-06-20 1998-12-23 Print Design & Graphics Limite Lidded container
US5960986A (en) * 1997-09-22 1999-10-05 Sealright Co., Inc. Lid for a frozen dessert container
US5996884A (en) * 1997-12-16 1999-12-07 Pepsico, Inc. Hybrid container having a rigid body and polymer film ends
US6116422A (en) * 1997-09-22 2000-09-12 Sealright Co., Inc. Frozen dessert container
DE29918836U1 (de) * 1999-10-26 2001-03-08 Diefenbach, Berndt, 80538 München Verkaufsverpackung
DE202007001160U1 (de) * 2007-01-26 2008-06-05 Cofresco Frischhalteprodukte Gmbh & Co. Kg Behälter
CN111867942A (zh) * 2018-03-16 2020-10-30 印刷包装国际有限责任公司 有衬里的容器
CN120270640A (zh) * 2025-05-20 2025-07-08 安徽科技学院 一种散装食品保温包装装置
TWI913837B (zh) 2024-08-09 2026-02-01 蘇泉錫 紙托盤

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6092718A (en) * 2000-01-04 2000-07-25 Chen; Ching-Sung Paper lunch box

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197115A (en) * 1964-03-23 1965-07-27 West Virginia Pulp & Paper Co Ice cream carton
US3502241A (en) * 1968-03-25 1970-03-24 Phillips Petroleum Co Compartmented tray reinforced against bending
WO1980002132A1 (fr) * 1979-04-04 1980-10-16 J Melo Assiette et couvercle en papier a jeter
US4804137A (en) * 1987-12-11 1989-02-14 Harby Colin F Food container
US5267686A (en) * 1991-11-22 1993-12-07 Gulf States Paper Corporation Food package containing separate trays connected together by a single lid structure
EP0576863A1 (fr) * 1992-07-01 1994-01-05 Westvaco Corporation Procédé pour sceller à chaud une boîte en carton pourvue d'une couche de polymère sur seulement un côté et produit ainsi obtenu
US5326017A (en) * 1993-09-02 1994-07-05 Liu Yuan Shin Paper container with multiple compartments partitioned by walls in different heights

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197115A (en) * 1964-03-23 1965-07-27 West Virginia Pulp & Paper Co Ice cream carton
US3502241A (en) * 1968-03-25 1970-03-24 Phillips Petroleum Co Compartmented tray reinforced against bending
WO1980002132A1 (fr) * 1979-04-04 1980-10-16 J Melo Assiette et couvercle en papier a jeter
US4804137A (en) * 1987-12-11 1989-02-14 Harby Colin F Food container
US5267686A (en) * 1991-11-22 1993-12-07 Gulf States Paper Corporation Food package containing separate trays connected together by a single lid structure
EP0576863A1 (fr) * 1992-07-01 1994-01-05 Westvaco Corporation Procédé pour sceller à chaud une boîte en carton pourvue d'une couche de polymère sur seulement un côté et produit ainsi obtenu
US5326017A (en) * 1993-09-02 1994-07-05 Liu Yuan Shin Paper container with multiple compartments partitioned by walls in different heights

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2326404A (en) * 1997-06-20 1998-12-23 Print Design & Graphics Limite Lidded container
US5960986A (en) * 1997-09-22 1999-10-05 Sealright Co., Inc. Lid for a frozen dessert container
US6116422A (en) * 1997-09-22 2000-09-12 Sealright Co., Inc. Frozen dessert container
US6401967B1 (en) 1997-09-22 2002-06-11 Sealright Co. Inc. Frozen dessert container
US5996884A (en) * 1997-12-16 1999-12-07 Pepsico, Inc. Hybrid container having a rigid body and polymer film ends
DE29918836U1 (de) * 1999-10-26 2001-03-08 Diefenbach, Berndt, 80538 München Verkaufsverpackung
DE202007001160U1 (de) * 2007-01-26 2008-06-05 Cofresco Frischhalteprodukte Gmbh & Co. Kg Behälter
CN111867942A (zh) * 2018-03-16 2020-10-30 印刷包装国际有限责任公司 有衬里的容器
TWI913837B (zh) 2024-08-09 2026-02-01 蘇泉錫 紙托盤
CN120270640A (zh) * 2025-05-20 2025-07-08 安徽科技学院 一种散装食品保温包装装置

Also Published As

Publication number Publication date
HU9600096D0 (en) 1996-03-28
AU4094596A (en) 1996-07-25
HUP9600096A2 (en) 1996-10-28
CA2167022A1 (fr) 1996-07-18
JPH08253271A (ja) 1996-10-01
PL312348A1 (en) 1996-07-22
CZ11896A3 (en) 1996-08-14

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