CA2643039A1 - A method for producing a detachably connected container having barrier properties - Google Patents

A method for producing a detachably connected container having barrier properties Download PDF

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Publication number
CA2643039A1
CA2643039A1 CA002643039A CA2643039A CA2643039A1 CA 2643039 A1 CA2643039 A1 CA 2643039A1 CA 002643039 A CA002643039 A CA 002643039A CA 2643039 A CA2643039 A CA 2643039A CA 2643039 A1 CA2643039 A1 CA 2643039A1
Authority
CA
Canada
Prior art keywords
channel
thickness
flange
polyolefin sheet
polyolefin
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.)
Granted
Application number
CA002643039A
Other languages
French (fr)
Other versions
CA2643039C (en
Inventor
Eric Thomas Henderson
John Joseph Michels
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.)
Frito Lay North America Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2643039A1 publication Critical patent/CA2643039A1/en
Application granted granted Critical
Publication of CA2643039C publication Critical patent/CA2643039C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • B65D1/30—Groups of containers joined together end-to-end or side-by-side
    • 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
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/023—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0045—Perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0022—Multi-cavity moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0053—Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
    • B29C37/0057—Moulding single grooves or ribs, e.g. tear lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/086—EVOH, i.e. ethylene vinyl alcohol copolymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/22—Hinges, pivots

Abstract

A method is provided of forming a multi-pack container assembly having at least two containers joined together by a channel. The method includes the steps of providing sheet having a barrier layer thermoforming the sheet into a multi-pack container assembly having a plurality of containers wherein each container comprises a flange and the flanges of adjacent containers are connected by an engineered area of weakness or channel. Resultant containers can be used for low-moisture, shelf-stable, ready-to-eat food products.

Claims (19)

1. A method for making a detachably connected multi-pack container, said method comprising the steps of:

providing a polyolefin sheet having moisture barrier properties;
thermoforming said polyolefin sheet into a multi-pack container assembly comprising two or more containers wherein each container comprises a flange having a thickness, wherein a channel having a channel depth and a channel thickness detachably connects two of said flanges together, and wherein said channel thickness is less than said flange thickness,
2. The method of claim 1 wherein said polyolefin sheet further comprises HDPE.
3. The method of claim 1 wherein said polyolefin comprises polypropylene.
4. The method of claim 3 wherein said polyolefin sheet further comprises an EVOH layer.
5. The method of claim 2 wherein said polyolefin sheet further comprises an EVOH layer.
6. The method of claim 1 wherein said polyolefin sheet further comprises oxygen barrier properties.
7. The method of claim 6 wherein said polyolefin sheet comprises an oxygen transmission rate of less than about 1.92 cc/day/m2/mil.
8. The method of claim 1 wherein said polyolefin sheet further comprises EVOH.
9. The method of claim 1 wherein said channel is substantially U-shaped.
10. The method of claim 1 wherein said channel is substantially V-shaped.
11. The method of claim 1 wherein said channel further comprises one or more channel walls wherein at least one of said channel walls is substantially perpendicular to said flange.
12. The method of claim 1 wherein said channel width is greater than about 20 mils.
13. The method of claim 1 wherein said channel width is created with a knife.
14. The method of claim 1 wherein said flange comprises a thickness of more than about 5 mils.
15. The method of claim 1 wherein said channel thickness is less than about one-half of said flange thickness.
16. The method of claim 1 wherein said channel thickness is greater than about 1 mil.
17. The method of claim 1 wherein said flange terminates substantially perpendicular to said channel.
18. The method of claim 1 wherein said polyolefin comprises a moisture vapor transmission rate of less than about 25 g/day/m2/mil.
19. The method of claim 1, wherein said channel width is substantially the same along said channel depth.
CA2643039A 2006-02-20 2007-02-14 A method for producing a detachably connected container having barrier properties Expired - Fee Related CA2643039C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/358,567 US7845147B2 (en) 2006-02-20 2006-02-20 Method for producing a detachably connected container having barrier properties
US11/358,567 2006-02-20
PCT/US2007/062115 WO2007098342A2 (en) 2006-02-20 2007-02-14 A method for producing a detachably connected container having barrier properties

Publications (2)

Publication Number Publication Date
CA2643039A1 true CA2643039A1 (en) 2007-08-30
CA2643039C CA2643039C (en) 2010-09-21

Family

ID=38427385

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2643039A Expired - Fee Related CA2643039C (en) 2006-02-20 2007-02-14 A method for producing a detachably connected container having barrier properties

Country Status (13)

Country Link
US (2) US7845147B2 (en)
EP (1) EP1989123B1 (en)
JP (1) JP2009531235A (en)
KR (1) KR101177604B1 (en)
CN (1) CN101426688B (en)
AT (1) ATE553036T1 (en)
AU (1) AU2007217291B9 (en)
BR (1) BRPI0708091A2 (en)
CA (1) CA2643039C (en)
ES (1) ES2385362T3 (en)
MX (1) MX2008010715A (en)
TW (1) TWI344351B (en)
WO (1) WO2007098342A2 (en)

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Also Published As

Publication number Publication date
TW200744512A (en) 2007-12-16
AU2007217291B9 (en) 2010-12-02
AU2007217291B2 (en) 2010-07-29
US20110036834A1 (en) 2011-02-17
BRPI0708091A2 (en) 2011-05-17
CA2643039C (en) 2010-09-21
WO2007098342A3 (en) 2007-12-06
ATE553036T1 (en) 2012-04-15
MX2008010715A (en) 2008-11-27
ES2385362T3 (en) 2012-07-23
EP1989123A2 (en) 2008-11-12
TWI344351B (en) 2011-07-01
KR101177604B1 (en) 2012-08-27
JP2009531235A (en) 2009-09-03
AU2007217291A1 (en) 2007-08-30
EP1989123A4 (en) 2009-12-09
WO2007098342A2 (en) 2007-08-30
US7845147B2 (en) 2010-12-07
EP1989123B1 (en) 2012-04-11
CN101426688A (en) 2009-05-06
KR20080106935A (en) 2008-12-09
US8167160B2 (en) 2012-05-01
CN101426688B (en) 2011-11-02
US20070194495A1 (en) 2007-08-23

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Effective date: 20210831

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Effective date: 20200214