WO2003018410A1 - Contenant pour produit alimentaire - Google Patents

Contenant pour produit alimentaire Download PDF

Info

Publication number
WO2003018410A1
WO2003018410A1 PCT/GB2002/003912 GB0203912W WO03018410A1 WO 2003018410 A1 WO2003018410 A1 WO 2003018410A1 GB 0203912 W GB0203912 W GB 0203912W WO 03018410 A1 WO03018410 A1 WO 03018410A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
flange
ofthe
container according
food product
Prior art date
Application number
PCT/GB2002/003912
Other languages
English (en)
Inventor
Philip Wright
Frank Mills
Neil Goldman
Original Assignee
Colpac Limited
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
Priority claimed from GB0120656A external-priority patent/GB0120656D0/en
Application filed by Colpac Limited filed Critical Colpac Limited
Priority to US10/487,624 priority Critical patent/US20040238403A1/en
Priority to DE60219636T priority patent/DE60219636T2/de
Priority to EP02755249A priority patent/EP1419092B1/fr
Publication of WO2003018410A1 publication Critical patent/WO2003018410A1/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
    • 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
    • B65D5/20—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 by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/28—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 by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of 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
    • 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
    • B65D5/20—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 by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/2038—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 by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape
    • B65D5/2047—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 by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape trapezoidal, e.g. to form a body with diverging side 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
    • 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
    • B65D5/4279—Joints, seams, leakproof joints or corners, special connections between panels

Definitions

  • This invention relates to a container for receiving a food product and in particular the invention is concerned with containers that can be formed by folding a shaped blank of paper, paperboard, cardboard or a similar material. (Reference in this specification to 'paperboard' are to be taken to include paper, cardboard and similar materials.)
  • Containers for food products such as sandwiches tend to be manufactured from paperboard or from plastics.
  • Paperboard is generally preferred as it is recyclable and regarded as more environmentally friendly than the plastics alternative, but where food products are not packaged at the point of sale for immediate purchase, plastics containers are used to ensure product freshness is maintained for as long as possible by providing an airtight compartment for the food product. Further, the shelf life of food products in cardboard containers is limited as grease or fat from the food product permeates through the paperboard after a number of hours to discolour the paperboard.
  • the present invention provides a container for receiving a food product and folded from a blank, the container comprising a main body defining an opening for receiving the food product and a circumjacent flange, and the surface ofthe blank forming the inner surface ofthe container having a barrier coating such that a plastics film can be heat sealed to the flange to create a substantially airtight container for the food product.
  • the barrier coating allows the plastics film to be heat sealed to the flange, and it also serves to decrease the permeability ofthe paperboard and thus to improve the shelf life of the food product within the container.
  • the reduced permeability ofthe paperboard serves to slow the passage of grease or fat from the food product out ofthe container.
  • the barrier coating may also enable the blank to be secured in the form of the container by heat treatment of the main body.
  • the uniform coating across the inner surface of the blank, and the use of heat treatment to secure the container in the assembled condition ensures a uniform seal is obtained across the full width of all joints and thus helps to increase the integrity ofthe main body.
  • the need for separate adhesive can be avoided.
  • the main body of the container comprises a substantially rectangular rear portion with opposed pairs of major and minor sides, and pairs of side panels and end panels integrally connected to the rear portion at the minor and major opposed sides respectively, the side panels having side edges which extend at oblique angles to said minor opposed sides.
  • the outmost edges ofthe side and end panels, which combine to define the opening of the container each have an integral flange-forming portion. It is preferred that the flange-forming portions extend beyond the lateral extremity of the side and end panels, such that the flange defined by the flange-forming portions has a substantially uniform width.
  • the adjacent side edges ofthe side and end panels may be connected and sealed by a flap integrally formed with one of said side or end panel and extending substantially along the length ofthe side edge.
  • a webbing arrangement is provided between the side and end panels.
  • the webbing arrangement is contiguous with the side and end panels and serves to minimise the area ofthe free edge which is exposed to fat or grease in the assembled container.
  • a radiused cut is provided in the region of the intersection between the flap edge and the flange-forming portions. Further, the radiused cut is offset from the crease line.
  • creasing rather than scoring, the paperboard forms fold lines in the blank.
  • Creasing is advantageous compared with scoring as it does not prejudice the integrity of the main body of the container, and this contributes to the decreased permeability ofthe container main body.
  • cuts provided between the flaps and the side edges of the side panels in the region of the rear portion are terminated a distance short of the crease lines to increase the integrity ofthe main body in the vicinity ofthe rear portion and thus improve the shelf life ofthe food product.
  • the barrier coating is preferably selected from a group of thermoplastics such as polyethylene or a water based acrylic coating, such as TECTRA TM can be used. It is preferred that the side and edge panels cooperate to define a substantially uniplanar opening to the container.
  • a container as described above having a plastic film sealed to the flange to form a substantially airtight compartment for the food product contained therein.
  • Figure 1 is a plan view of a container blank according to an aspect of the invention.
  • Figure 2 is a first perspective view of a blank partially assembled into a container
  • Figure 3 is a second perspective view of a blank partially assembled into a container
  • Figure 4 is a perspective view of a container according to an aspect of the invention.
  • Figure 5 is an enlarged view of a container of the blank shown in Figure 1; and Figure 6 is a plan view of a container according to a preferred embodiment ofthe invention.
  • the container blank shown in Figure 1 may consist of papers, paperboard, cardboard or a similar material.
  • the surface of the blank that is used to form the inner surface of the containers is coated with a plastics coating such a polyethylene TECTRA TM.
  • the blank includes a generally rectangular central portion 1, with a minor pair of parallel sides 2 defined by fold lines and a major pair of parallel sides 2 defined by fold lines and a major pair of parallel sides 3, also defined by fold lines.
  • Integrally formed with the rear portion 1 along the fold lines 2 are side panels of essentially identical shape and attached to the rear panel along fold lines 3 are end panels 5, also of substantially identical shape.
  • the outermost edges ofthe side and edge panels are defined by fold lines 6 and, as can be clearly seen from Figure 4, the outermost edges of the side and end panels 6 are arranged to lie in a common plane and thus define a uniplanar opening to the main body of the container, generally designated 7.
  • Fold lines 8 delineate tabs or flaps 10 which extend along the length of the end panels 5.
  • the flaps 10 are contiguous with the side panels 4 in the region of the rear portion 1, and cuts 9 separate the flaps form the side panels 4 in this area.
  • the cuts 9 extend up to, but not through the folding lines 2 and 8 in the region of the rear portion 1.
  • Elongate rectangular flange-forming flaps 11 are integral with the side and end panels 4,5.
  • the flange-forming flaps 11 are delineated from the side and end panels 4,5 by the fold lines 6.
  • fold lines 8 extend in the form of fold lines 12 onto the flange-forming portions to define substantially square end areas 13 of the flange-forming flaps 11.
  • the flange-forming flaps 11 extend at each end beyond the extremity of the side panels 4.
  • the extended sections of the flange forming flaps are substantially identical in size and shape to the square end areas 13 of the adjacent flange- forming flaps.
  • a radiused cut 15 is provided at the intersection of the flap 10 and the end area 13 of the flange-forming flap 13.
  • the radiused cut 15 is set away from the fold lines 8 and 12 by a small distance such that it does not interfere with the folding ofthe blank in this region.
  • the webbing arrangement has two flaps or tabs 20a and 20b that are integrally formed with the end and side panels 5,4.
  • the flaps 20a,b share a common contiguous edge which defines a fold line 21 radiating out from the intersection between the rear portion 1 and the side and end panels 4,5.
  • the fold line 21 is configured to fold in the opposite direction to the neighbouring fold lines. To aid the folding process the fold line 21 terminates a distance from the outermost edge of the webbing arrangement 20, with the remainder of the flaps 20a,b defining free edges 22a,b respectively.
  • the flap 20a overlies the flap 20b to sandwich the flap 20a between the flap 20b and the side panel 4.
  • the area of the free edge of the webbing arrangement that might be susceptible to the ingress of grease or fat is reduced. Further no free edge is exposed in the region of the rear portion 1 of the container where grease or fat is most likely to collect.
  • the shape of the tabs 20a,b shown in the drawings illustrates a preferred configuration, but should not be regarded as limiting as other configurations which reduce the area ofthe free edge ofthe webbing arrangement that might be exposed to grease of fat may be viable.
  • the blank can be cut to shape and provided with fold lines according to conventional manufacturing techniques, it is important to note that the fold lines are creased, rather than scored, to avoid weakening the integrity of the assembled container.
  • the blank is assembled such that the flaps 10 line internally ofthe side panels 4.
  • the square end areas 13 of the flange-forming flaps 11 associated with the end panels 5 overlie the extended end portions of the flange-forming flaps associated with the side panels 4, and the container is sealed in the configuration shown in Figure 4 by the reaction of the barrier coating to the application of heat and pressure around the main body 7 of the container. It is preferred to sandwich the container between a shaped male and female member, with heat being applied through the male and female member to seal the abutting parts ofthe blank and thus form the container.
  • the front or upper surface of the flange defined by the flange-forming flaps 11 presents the barrier coated surface.
  • a container formed in this manner has been shown to keep a sandwich fresh for between 48 to 72 hours or longer from the application of the plastic film.
  • the plastics coating on the cardboard serves as a barrier layer to prevent grease or fat from the sandwich discolouring or damaging the main body.
  • the barrier layer reduces the permeability ofthe main body to improve the shelf life of the food product.
  • the rear portion 1 of the blank allows a satisfactory seal to be obtained at the rear of the container, although it represents a compromise on the deal shaping of the container which would come to a point at the rear to maximise the inner volume of the main body. Nevertheless, by keeping the minor sides 2 of the rear portion smaller than the major sides 3 a satisfactory seal can be obtained without unduly compromising the volume ofthe container body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

L'invention concerne un contenant qui sert à recevoir un produit alimentaire et qui est plié à partir d'une découpe, ledit contenant comportant, d'une part, un corps principal formant une ouverture permettant de recevoir le produit alimentaire et, d'autre part, un rebord adjacent à la circonférence (11). La surface de la découpe constitue la surface interne du contenant pourvue d'un revêtement plastique, de telle manière qu'un film plastique peut être chauffé et scellé hermétiquement sur le rebord, de manière à créer un contenant pratiquement hermétique destiné à un produit alimentaire.
PCT/GB2002/003912 2001-08-24 2002-08-23 Contenant pour produit alimentaire WO2003018410A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/487,624 US20040238403A1 (en) 2001-08-24 2002-08-23 Container for food product
DE60219636T DE60219636T2 (de) 2001-08-24 2002-08-23 Lebensmittelbehälter
EP02755249A EP1419092B1 (fr) 2001-08-24 2002-08-23 Contenant pour produit alimentaire

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0120656A GB0120656D0 (en) 2001-08-24 2001-08-24 Container for food product
GB0120656.4 2001-08-24
GB0124781A GB0124781D0 (en) 2001-08-24 2001-10-12 Container for food product
GB0124781.6 2001-10-12

Publications (1)

Publication Number Publication Date
WO2003018410A1 true WO2003018410A1 (fr) 2003-03-06

Family

ID=26246471

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/003912 WO2003018410A1 (fr) 2001-08-24 2002-08-23 Contenant pour produit alimentaire

Country Status (6)

Country Link
US (1) US20040238403A1 (fr)
EP (1) EP1419092B1 (fr)
AT (1) ATE359965T1 (fr)
DE (1) DE60219636T2 (fr)
GB (1) GB2378938B (fr)
WO (1) WO2003018410A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005051780A1 (fr) * 2003-11-19 2005-06-09 Colpac Limited Recipient pour aliment

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2428234B (en) * 2005-07-13 2007-12-27 St Neots Packaging Ltd Snack food container
US7743971B2 (en) * 2006-01-24 2010-06-29 Levy (Ip) Limited Partnership Food and beverage carrier and method
EP2261128A1 (fr) * 2009-06-12 2010-12-15 Zalpak B.V. Ebauche et procédé adapté au conditionnement des sandwichs
DE102011052825A1 (de) * 2011-08-18 2013-02-21 Van Genechten Packaging N.V. Faltschachtel aus Karton oder dergleichen,Zuschnitt zum Herstellen einer Faltschachtel und Verfahren zum Aufrichten einer Faltschachtel
US11794943B2 (en) 2021-06-03 2023-10-24 Alonso Garcia Sanchez Tray container

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1518217A (en) * 1975-08-11 1978-07-19 Unilever Ltd Box for articles such as pralines
US4586649A (en) * 1984-02-13 1986-05-06 Waldorf Corporation Food package
US4631046A (en) * 1984-08-23 1986-12-23 Waldorf Corporation Bake in tray and method of forming a blank for the same
US5178294A (en) * 1989-05-18 1993-01-12 Robinson & Sons Ltd. Packaging container
CH685617A5 (de) * 1992-02-26 1995-08-31 Verpackungswerk Colordruck W M Wannenförmiges Verpackungselement.
EP1022224A1 (fr) * 1999-01-25 2000-07-26 Fisher-Matthews Ltd. Ebauche de conteneurs d'emballage

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US1869609A (en) * 1930-10-16 1932-08-02 Morales Matias Sandwich holder
US2858969A (en) * 1956-03-23 1958-11-04 Crown Zellerbach Corp Multi-trip shipping container
US3195803A (en) * 1963-05-31 1965-07-20 Trans World Services Food wrapper
SE329804B (fr) * 1967-05-17 1970-10-19 Sprinter Pack Ab
US3767108A (en) * 1971-04-13 1973-10-23 Federal Paper Board Co Inc Single serving package
US3917155A (en) * 1972-03-02 1975-11-04 Robert P Bemiss Carton
US3756495A (en) * 1972-03-02 1973-09-04 Robalex Inc Boilable bakeable package
US3863832A (en) * 1972-12-20 1975-02-04 Int Paper Co Food container
SE400250B (sv) * 1974-11-08 1978-03-20 Akerlund & Rausing Ab Tragliknande forpackning, foretredesvis avsedd for matfett e d
US4304352A (en) * 1980-03-28 1981-12-08 Kliklok Corporation Flanged tray with gusset corners
SE444662B (sv) * 1981-10-09 1986-04-28 Sprinter System Ab Trag, serskilt for livsmedel
SE435913B (sv) * 1983-03-17 1984-10-29 Glace Bolaget Forpackningstrag och emne herfor
US5253801A (en) * 1992-12-22 1993-10-19 International Paper Company Multi sided food tray
US5244145A (en) * 1993-03-10 1993-09-14 Westvaco Corporation Two way opening for a tray type carton
US5425972A (en) * 1993-04-16 1995-06-20 Westvaco Corporation Heat sealed, ovenable food carton lids
USD349050S (en) * 1993-06-14 1994-07-26 Ultra Pac, Inc. Sandwich container
US5620134A (en) * 1995-11-07 1997-04-15 Gulf States Paper Corporation Closable carton
US5989613A (en) * 1997-01-13 1999-11-23 Freshpak, Inc. Gas packaging method for perishable food products
GB9700704D0 (en) * 1997-01-15 1997-03-05 Colpac Limited Packaging
JP3784204B2 (ja) * 1999-05-24 2006-06-07 ユニ・チャーム株式会社 軟質シートで形成された包装体の製造方法
DE60327942D1 (fr) * 2002-12-10 2009-07-23 Rapid Action Packaging Ltd

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1518217A (en) * 1975-08-11 1978-07-19 Unilever Ltd Box for articles such as pralines
US4586649A (en) * 1984-02-13 1986-05-06 Waldorf Corporation Food package
US4631046A (en) * 1984-08-23 1986-12-23 Waldorf Corporation Bake in tray and method of forming a blank for the same
US5178294A (en) * 1989-05-18 1993-01-12 Robinson & Sons Ltd. Packaging container
CH685617A5 (de) * 1992-02-26 1995-08-31 Verpackungswerk Colordruck W M Wannenförmiges Verpackungselement.
EP1022224A1 (fr) * 1999-01-25 2000-07-26 Fisher-Matthews Ltd. Ebauche de conteneurs d'emballage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005051780A1 (fr) * 2003-11-19 2005-06-09 Colpac Limited Recipient pour aliment

Also Published As

Publication number Publication date
US20040238403A1 (en) 2004-12-02
EP1419092B1 (fr) 2007-04-18
DE60219636D1 (de) 2007-05-31
ATE359965T1 (de) 2007-05-15
GB2378938A (en) 2003-02-26
GB2378938B (en) 2005-01-19
GB0219730D0 (en) 2002-10-02
DE60219636T2 (de) 2007-12-27
EP1419092A1 (fr) 2004-05-19

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