EP1778552A4 - Stress relieving indent formation for very thin thermoformed plastic films or foil/plastic laminates - Google Patents

Stress relieving indent formation for very thin thermoformed plastic films or foil/plastic laminates

Info

Publication number
EP1778552A4
EP1778552A4 EP05782659A EP05782659A EP1778552A4 EP 1778552 A4 EP1778552 A4 EP 1778552A4 EP 05782659 A EP05782659 A EP 05782659A EP 05782659 A EP05782659 A EP 05782659A EP 1778552 A4 EP1778552 A4 EP 1778552A4
Authority
EP
European Patent Office
Prior art keywords
indent
pouch
stress
wall
relieving
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Withdrawn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
EP05782659A
Other languages
German (de)
French (fr)
Other versions
EP1778552A2 (en
Inventor
Sanford Redmond
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.)
Individual
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 EP1778552A2 publication Critical patent/EP1778552A2/en
Publication of EP1778552A4 publication Critical patent/EP1778552A4/en
Withdrawn legal-status Critical Current

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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D75/321—Both sheets being recessed
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
    • 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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • 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
    • B29C51/14—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 using multilayered preforms or sheets
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • 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
    • B29L2009/00—Layered products
    • B29L2009/003—Layered products comprising a metal layer

Definitions

  • the invention is directed to a system which will relieve excessive thinning and stress cracking of such rounded ball corners.
  • the invention includes the formation of on or more stress-relieving formations in the bulge formation.
  • the stress-relieving formation is an indent in the wall of the bulge formation.
  • the stress-relieving formation is a bulge or protrusion extending from the bulge formation.
  • the stress-relieving formation may be a relatively shallow flat indented or protruded formation with semi-circular ends in the wall of the bulge formation.
  • FIG. 1 shows a pouch (sachet) with a bulge formation with a stress-relieving indent with semi-circular ends.
  • FIG. 2 shows another embodiment of a stress-relieving indent in the form of a channel with a semi-circular cross-section.
  • FIG. 3 shows another embodiment, with a plurality of stress-relieving indents.
  • FIG. 4 shows various shapes for stress-relieving indents or protrusions.
  • a typical pouch-style package pouch is normally rectangular.
  • a bulge member 10 may be formed in one or more walls of the pouch. These bulges with or without indents may be utilized in ordinary rectangular pouches as currently available or with various patented easy opening pouches with a flap, or with a directional tear system.
  • the bulge member 10 may be parallel to the edge seals 20 with ball corners 12.
  • an indent 30 with semi circular ends is formed in the wall of the pouch. The tiny wall of the indent relieves the stresses of forming the ball corners 12 by flattening out a little when the ball corners 12 are formed.
  • This indent system may further be utilized to reduce stresses and thinning in various other packaging and/or other uses which require formed thin wall systems.
  • the stress relieving indents may be of a variety of shapes. It may further be recognized that multiple indents of various or similar shapes may be applied to a single unit. The concept is that the indent yields additional material when the film/foil is being formed into a greater shape by flattening or deforming as the film is stretched, thereby yielding stress relief to the greater shape.
  • FIG. 2 shows another embodiment of a stress-relieving indent in the form of a channel with a semi-circular cross-section, as indicated by the line A-A'.
  • FIG. 3 shows another embodiment, with a plurality of stress-relieving indents, having a cross-section as indicated by the line B-B'.
  • FIG. 4 shows various shapes for stress-relieving indents or protrusions.
  • the indent at C-C is a semi-circular indent.
  • the indent at C" -C" is a reverse indent or protrusion having a similar shape as the indent at C-C.
  • the indent at D-D' has a shape like a quarter-circle.
  • the indent at E-E' has an oblong shape.
  • G' are oblong in shape and crossed.

Abstract

A pouch-style package formed of thin film comprising a front wall, a back wall, edge seals joining the front wall and back wall, and at least one bulge formation formed in a wall of the pouch-style package, having a stress-relieving indent formed in the wall in which said bulge formation is formed, the stress-relieving indent providing material to relieve excessive thinning or stress cracking at corners of the bulge formation.

Description

STRESS RELIEVING INDENT FORMATION FOR VERY THIN THERMOFORMED PLASTIC FILMS OR FOIL/PLASTIC LAMINATES
Cross Reference to Related Applications
[0001] This application claims priority to U.S. Provisional Patent Application Serial No. 60/591,623, filed July 28, 2004, and U. S. Provisional Patent Application Serial No. 60/598,064, filed August 3, 2004, both of which are incorporated by reference herein. Background of the Invention
[0002] In the matter of pouch (sachet) style packages made of various very thin films, for example films of about 3 mils (.003") and less in thickness, in a variety of combinations such as coextruded muti-layer plastics, metal foil/thermoformable plastics, etc., it has been found that one or more bulges can be formed in at least one of the walls of the pouch (sachet) style containment package to increase the volumetric capacity of the pouch and/or to reduce the amount of material used to contain a specific volume, which reduces the cost significantly without much loss of barrier qualities. These bulges may be thermoformed for totally plastic walls, or, in the case of metal foil/plastic laminated combinations, where the foil is very thin, for example on the order of .0003", air pressure forming has been the most efficient means. As a matter of fact, the pre-heating for thermoforming is detrimental for foil/plastic combinations since it weakens the bond between the foil and the plastic film which the foil needs for support, and the foil ruptures in numerous stress cracks when being pressure formed. It has been further observed that the rounded ball corners of such bulges tend to thin out to where they also show stress cracks. Summary of the Invention
[0003] The invention is directed to a system which will relieve excessive thinning and stress cracking of such rounded ball corners. The invention includes the formation of on or more stress-relieving formations in the bulge formation. In certain embodiments, the stress-relieving formation is an indent in the wall of the bulge formation. In other embodiments, the stress-relieving formation is a bulge or protrusion extending from the bulge formation. In one example, the stress-relieving formation may be a relatively shallow flat indented or protruded formation with semi-circular ends in the wall of the bulge formation.
Brief Description of the Drawings
[0004] FIG. 1 shows a pouch (sachet) with a bulge formation with a stress-relieving indent with semi-circular ends.
[0005] FIG. 2 shows another embodiment of a stress-relieving indent in the form of a channel with a semi-circular cross-section.
[0006] FIG. 3 shows another embodiment, with a plurality of stress-relieving indents.
[0007] FIG. 4 shows various shapes for stress-relieving indents or protrusions.
Detailed Description of the Drawings
[0008] A typical pouch-style package pouch is normally rectangular. A bulge member 10 may be formed in one or more walls of the pouch. These bulges with or without indents may be utilized in ordinary rectangular pouches as currently available or with various patented easy opening pouches with a flap, or with a directional tear system.
[0009] The bulge member 10 may be parallel to the edge seals 20 with ball corners 12. In the embodiment of FIG. 1 , an indent 30 with semi circular ends is formed in the wall of the pouch. The tiny wall of the indent relieves the stresses of forming the ball corners 12 by flattening out a little when the ball corners 12 are formed.
[0010] This indent system may further be utilized to reduce stresses and thinning in various other packaging and/or other uses which require formed thin wall systems.
[0011] It may be seen that the stress relieving indents may be of a variety of shapes. It may further be recognized that multiple indents of various or similar shapes may be applied to a single unit. The concept is that the indent yields additional material when the film/foil is being formed into a greater shape by flattening or deforming as the film is stretched, thereby yielding stress relief to the greater shape.
[0012] FIG. 2 shows another embodiment of a stress-relieving indent in the form of a channel with a semi-circular cross-section, as indicated by the line A-A'.
[0013] FIG. 3 shows another embodiment, with a plurality of stress-relieving indents, having a cross-section as indicated by the line B-B'.
[0014] FIG. 4 shows various shapes for stress-relieving indents or protrusions. The indent at C-C is a semi-circular indent. The indent at C" -C" is a reverse indent or protrusion having a similar shape as the indent at C-C. The indent at D-D' has a shape like a quarter-circle. The indent at E-E' has an oblong shape. The indents at F-F' and G-
G' are oblong in shape and crossed.
[0015] It will be appreciated that the stress-relieving indent or protrusion may take a variety of shapes within the scope of the claims.

Claims

I claim:
1. A pouch-style package formed of thin film comprising: a front wall, a back wall, edge seals joining the front wall and back wall, and at least one bulge formation formed in a wall of the pouch-style package, characterized in that the wall in which said bulge formation is formed comprises: a stress-relieving indent formed in the wall in which said bulge formation is formed, the stress-relieving indent providing material to relieve excessive thinning or stress cracking at corners of the bulge formation.
2. A pouch-style package as claimed in claim 1, wherein the corners of the bulge formation are rounded ball corners.
3. A pouch-style package as claimed in claim 1, wherein the indent is a reverse indent so as to form a stress-relieving protrusion.
4. A pouch-style package as claimed in claim 1, wherein the indent is a relatively shallow flat indent with semi-circular ends.
5. A pouch-style package as claimed in claim 1, wherein the indent has a semi¬ circular cross-section. 6. A pouch-style package as claimed in claim 1, wherein the indent is oblong in shape.
EP05782659A 2004-07-28 2005-07-28 Stress relieving indent formation for very thin thermoformed plastic films or foil/plastic laminates Withdrawn EP1778552A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US59162304P 2004-07-28 2004-07-28
US59806404P 2004-08-03 2004-08-03
PCT/US2005/026743 WO2006015095A2 (en) 2004-07-28 2005-07-28 Stress relieving indent formation for very thin thermoformed plastic films or foil/plastic laminates

Publications (2)

Publication Number Publication Date
EP1778552A2 EP1778552A2 (en) 2007-05-02
EP1778552A4 true EP1778552A4 (en) 2009-06-10

Family

ID=35787812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05782659A Withdrawn EP1778552A4 (en) 2004-07-28 2005-07-28 Stress relieving indent formation for very thin thermoformed plastic films or foil/plastic laminates

Country Status (3)

Country Link
US (2) US20060023975A1 (en)
EP (1) EP1778552A4 (en)
WO (1) WO2006015095A2 (en)

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AU2004100000A4 (en) * 2004-01-02 2004-02-12 Sands Innovations Pty Ltd Dispensing stirring implement
JP5560041B2 (en) 2007-01-31 2014-07-23 サンズ イノベーションズ ピーティーワイ リミテッド Dispensing tool and manufacturing method thereof
AU2008365185B2 (en) 2008-12-09 2016-05-05 Sands Innovations Pty Ltd A dispensing container
USD636890S1 (en) 2009-09-17 2011-04-26 Sands Innovations Pty. Ltd. Dispensing utensil
US8511500B2 (en) 2010-06-07 2013-08-20 Sands Innovations Pty. Ltd. Dispensing container
US8485360B2 (en) 2011-03-04 2013-07-16 Sands Innovations Pty, Ltd. Fracturable container
USD744014S1 (en) * 2012-06-06 2015-11-24 Stephen S. Gleason Composite coring reinforcement material
USD723365S1 (en) * 2013-03-15 2015-03-03 The J.M. Smucker Company Container
USD913807S1 (en) 2017-12-20 2021-03-23 Intercontinental Great Brands Llc Confectionery packaging
USD856630S1 (en) 2017-12-20 2019-08-20 Intercontinental Great Brands Llc Confection
USD953886S1 (en) 2018-05-11 2022-06-07 Intercontinental Great Brands Llc Confectionery packaging
USD862247S1 (en) 2018-06-25 2019-10-08 Intercontinental Great Brands Llc Confectionery packaging

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US1853374A (en) * 1930-04-05 1932-04-12 Orenda Corp Cushioning panel
US3367380A (en) * 1964-03-05 1968-02-06 Dev Consultants Inc Collapsible container
US4429792A (en) * 1981-09-11 1984-02-07 Medication Services, Inc. Medication-dispensing card
US4574954A (en) * 1984-12-07 1986-03-11 Medication Services Inc. Pill dispenser
GB8809077D0 (en) * 1988-04-18 1988-05-18 Rasmussen O B Polymeric bags & methods & apparatus for their production
US4899976A (en) * 1988-04-29 1990-02-13 Arctic Icewater, Inc. Ice cube tray
US5511697A (en) * 1994-12-19 1996-04-30 The Procter & Gamble Company Reclosable pouch and method of construction
US5954204A (en) * 1995-10-20 1999-09-21 Phatmacia & Upjohn Company Blister package
DE69726155T2 (en) * 1996-02-02 2004-09-09 Sanford Redmond CONTAINERS FOR COFFEE CREAM AND OTHER MUGS AND TUBS
US6783030B2 (en) * 1999-11-19 2004-08-31 Sanford Redmond Easy opening sealed containment and dispensing package

Non-Patent Citations (1)

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Title
No further relevant documents disclosed *

Also Published As

Publication number Publication date
WO2006015095A2 (en) 2006-02-09
WO2006015095A3 (en) 2006-12-07
US20060023975A1 (en) 2006-02-02
US20080002921A1 (en) 2008-01-03
EP1778552A2 (en) 2007-05-02

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