EP1669303A1 - Beutel für erhitzbare nahrungsmittel - Google Patents

Beutel für erhitzbare nahrungsmittel Download PDF

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Publication number
EP1669303A1
EP1669303A1 EP04788360A EP04788360A EP1669303A1 EP 1669303 A1 EP1669303 A1 EP 1669303A1 EP 04788360 A EP04788360 A EP 04788360A EP 04788360 A EP04788360 A EP 04788360A EP 1669303 A1 EP1669303 A1 EP 1669303A1
Authority
EP
European Patent Office
Prior art keywords
heat seal
retort food
seal portion
notch
main body
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
EP04788360A
Other languages
English (en)
French (fr)
Other versions
EP1669303B1 (de
EP1669303A4 (de
Inventor
Shigenobu c/o AJINOMOTO CO. INC. HARANO
Miho c/o AJINOMOTO CO. INC. SAGAE
Shinichi c/o AJINOMOTO CO. INC. MATSUMOTO
Mayumi c/o AJINOMOTO CO. INC. OMORI
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.)
Ajinomoto Co Inc
Original Assignee
Ajinomoto Co Inc
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 Ajinomoto Co Inc filed Critical Ajinomoto Co Inc
Publication of EP1669303A1 publication Critical patent/EP1669303A1/de
Publication of EP1669303A4 publication Critical patent/EP1669303A4/de
Application granted granted Critical
Publication of EP1669303B1 publication Critical patent/EP1669303B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5816—Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion

Definitions

  • the present invention relates to a retort food pouch, and more particularly to a retort food pouch capable of easily transferring fluid products such as liquids, powders, and grains, and especially retort foods including liquid foods and the like, into a cup.
  • Pouches made by methods such as sealing the edge portions of one or a plurality of films are widely used as packaging materials for various contents, particularly fluid contents.
  • a means is sought whereby an opening portion (a pour spout) capable of reliably pouring out contents to a predetermined position without spillage can be formed on an upper corner portion of a pouch, without requiring the use of scissors.
  • a refillable pouch is known (see, for example, JP H7-300146) in which a notch portion including a groove portion is formed in a seal portion in which a pour spout is formed, thus enabling the pouch pour spout to be affixed to the opening portion of another container to which contents are to be transferred.
  • Such pouches of the prior art hold liquids and powders such as liquid detergent and shampoos, and are constituted of relatively soft materials.
  • notch portion having the shapes disclosed in the prior art enable easy and reliable formation of pour spouts, as well as reliable affixing of a pour spout onto the opening portion of another container to which shampoo or other contents is to be transferred.
  • the present invention was undertaken to resolve such issues, and seeks to provide a retort food pouch which, when constituted of materials having the characteristics sought in pouches for retort foods, enables easy and reliable forming of an appropriate pour spout, and also enables the appropriate affixing of the formed pour spout to the opening portion of another container to which contents are to be transferred.
  • a retort food pouch is closed by an upper heat seal portion, a lower heat seal portion, and a side heat seal portion, and includes a notch portion formed to open toward a side edge on a top portion of the side heat seal portion so as to form a content pour spout at a cutting section where a corner portion between said notch portion and the upper heat seal portion is cut;
  • said notch portion comprises an approximately rectangular main body, opening toward the side edge, and an extended portion continuously extending from a lower side section of said main body portion; and said extended portion is constituted to receive an upper edge portion of a wall forming the mouth of another container into which the retort food is to be transferred, extending along its axial line in a direction approximately perpendicular to the side edge; and a precut is formed to extend from the main body portion toward the upper edge at an angle of 20-80 degrees with respect to the side edge, with said cutting performed along said precut.
  • the main body portion upper edge comprises a horizontal portion extending at a right angle to the side edge and a vertical portion extending approximately perpendicularly downward from the end of the horizontal portion; the precut extends from the connecting portion between the horizontal portion and the vertical portion.
  • the side edge-side portions at the upper and lower edge of the main body portion are respectively inclined upward and downward.
  • the notch portion and the precut are established such that the length of the pour spout formed by the cutting is 15-60 mm.
  • the lateral heat seal portion on which the notch portion is formed is a widened portion of wider width than the heat seal portion on the side on which the notch portion is not formed.
  • the widened portion is formed 10-25 mm away from the upper edge heat seal portion.
  • the pouch is constituted by a metal laminate film with a multi-layer structure comprising a crystalline polypropylene resin film/adhesive resin layer including modified polypropylene/metal foil/adhesive layer/oriented nylon film/adhesive layer/polyester film.
  • a retort food pouch which, when constituted of materials having characteristics required for retort food pouches, permits easy and reliable formation of an appropriate pour spout and, further, permits appropriate affixing of the formed pour spout to the opening portion of another container into which contents are to be transferred.
  • FIG. 1 is a side view depicting a retort food pouch according to a preferred embodiment of the present invention
  • Fig. 2 is an expanded view depicting the portion of pouch 1 in which a notch is formed.
  • a retort food pouch according to the present preferred embodiment is manufactured by heat seal bonding the perimeter portions of two laminate films (only one is here depicted) having a height of approximately 185 mm and a width of approximately 130 mm.
  • a top edge 4 is open; the two side edges and the bottom edge are respectively closed by side heat seal portions 6 and 8 and a lower heat seal portion 10.
  • contents such as food or the like are filled into the open upper end, whereupon the open upper end is closed by the upper heat seal portion 12 and the contents are sealed.
  • the retort food pouch 1 takes the form of a "standing pouch,” in which a third laminate film (not depicted) is disposed between the bottom edge portions of two metal laminate films 2 (only one is here depicted), and the two laminate films 2 and the third laminate film are bonded so as to form an approximately circular gusset.
  • the retort food pouch 1 of the present embodiment is constituted so as to be easily opened by cutting off an upper corner portion thereof, such that an opening is formed in the cut portion which serves as a pour spout for contents.
  • a notch portion 14 forming a start-of-cut portion is formed in the upper portion of one of the side heat seal portions 6.
  • the notch portion 14 is formed by notching so as to open the side heat seal portion 6 at an upper position separated by a predetermined distance from the top end 4 of the retort food pouch 1 in the direction of the side edge 16 (the outward direction).
  • the notch portion 14 comprises an approximately rectangular main body portion 18 opening toward the side edge 16 and an extended portion 20 which extends inward as a continuation of the lower portion of the main body portion 18.
  • the extended portion 20 is dimensioned and shaped so that when transferring a retort food as pouch contents to another container, the extended portion 20 can engage the upper edge portion of a wall which constitutes the opening portion of the other container.
  • the extended portion 20 has a rectangular shape with a semicircular shape at the tip, extending horizontally (in the pouch breadth direction). Also, the extended portion 20 is disposed such that the axial line x in the lateral direction (depth direction) thereof extends in a direction approximately perpendicular to the side edge 16.
  • portions of the top side edge (top edge) 18a and bottom side edge (bottom edge) 18b of the main body portion 18 are designed on the side edge 16 side, as top side inclined portion 18c and bottom side inclined portion 18d, and respectively slope upward and downward.
  • the top edge 18a is furnished with a horizontal portion 18e extending from the inside edge of the top side inclined portion 18c in a direction approximately perpendicular to the side edge 6.
  • the main body portion 18 is provided with a vertical portion 18f extending approximately perpendicularly downward from the inside edge of the horizontal portion 18e. Therefore the main body portion 18 is provided with an approximately right angle corner portion 18g, constituted by the mutually perpendicularly extending horizontal portion 18e and vertical portion 18f.
  • a precut (I-shaped notch) 22 is formed, extending from the main body portion 18 corner portion 18g of the notch portion 14 toward the top edge 6.
  • This precut 22 is the portion at which cutting starts when opening the retort food pouch 1; the precut 22 extension line L becomes the cutting line, which is to say the pour spout, when opening the retort food pouch 1.
  • the precut 22 is disposed so that its angle with respect to the side edge 6 is 20-80 degrees, and preferably 40-60 degrees.
  • the portion of the side heat seal portion 6 in which the notch portion 14 is formed is a widened portion 6a, in order that space to form the notch portion 14 can be secured, and that a heat seal portion can be secured with sufficient strength that the bag will not break even when subjected to shock such as dropping or the like on the inner side of the notch portion 14.
  • the width w1 of the side heat seal portion 6 in portions other than the widened portion 6a is approximately 6 mm, but the width w2 of the widened portion 6a is set at approximately 10 mm, thus securing a width of approximately 3 mm on the inner side of the notch portion 14 for the heat seal portion.
  • a width range for w 1 of 4-12 mm is preferable, as this range prevents bag breakage and assures an appropriate pouch fill quantity. It is preferable that the width of the notch portion 14 inner side heat seal portion be 2 mm or greater, as bag breakage is unlikely to occur when that width is wider than 2 mm.
  • the value for w2-w 1 can be 4-12 mm, and is preferably 4-8 mm.
  • a widened portion 6a is formed in the upper portion of the side heat seal portion 6; therefore a region 24 extending outward, in which contents are movable, is formed between the widened portion 6a and the upper heat seal portion 12.
  • a shock is imparted to the pouch 1 through dropping or the like, pouch contents suddenly flow into the region 24 and stress is concentrated at the edge of region 24, resulting in potential bag breakage in this portion.
  • this height h is 16 mm.
  • the height h should preferably be in a range of 10-25 mm. In that range, bags will be unlikely to break, the notch position is not too far below the upper edge of the pouch, and dimensions are appropriate.
  • the laminate film 2 is broken along a line extending from the precut 22, using the precut 22 as a start-of-cut portion, thus forming an opening in the upper portion of the pouch.
  • the opening length 1 which is to say the length of the portion positioned between the side heat seal portion 6 and the upper heat seal portion 12 of the precut 22 extended line L, to be approximately 15-60 mm. Therefore in the retort food pouch 1 of the present embodiment, the notch portion 14 position, the precut 22 position, and the angle, etc. are set so that the opening length 1 is approximately 15-60 mm.
  • a range of 2-10 mm is preferable for the distance between the precut 22 and the seal edge portion (the starting point for the opening length). Using this range, the bag will not break starting from the precut portion during distribution, and users will be able to easily open the bag.
  • Adoption of the above structure not only enables prevention of bag breakage and improved opening characteristics, but also results in improved pouring characteristics, whereby the unique seal shape of the present embodiment prevents disturbance of content flow and liquid spillage when transferring contents to a cup or the like.
  • a material having the characteristics required for a retort food pouch, such as strength, retort resistance, oxygen impermeability, and the ease of tearing which forms the basis for ease of opening for example a metal laminate film with a multi-layer structure comprising crystalline polypropylene resin film/adhesive resin layer including denatured polypropylene/metal foil/adhesive layer/oriented nylon film/adhesive layer/polyester film, is used as a metal laminate film for the pouch of the present embodiment.
  • Examples of the crystalline polypropylene resin films used in the present invention includes a homopolymer type wherein the films are obtained by polymerizing polypropylenes only, a copolymer type wherein they are obtained by copolymerizing ethylenes and the like with propylenes, and a terpolymer type wherein they are obtained by copolymerizing three kinds of propylenes, ethylenes, and butylenes.
  • they include copolymers which can be produced in accordance with the production methods described in Japanese Patent Publication (JP Kokoku) Nos.
  • Sho 44-16668 or Sho 55-8011 such as ethylene propylene block copolymers of which ethylene concentration is 3 to 40 weight% and preferably 5 to 30 weight%, melt flow index (MFI) is 0.1 to 40g/10mm (ASTM-D-1238) and preferably 20g/10mm or less, and absorbance ratio between 720cm-1 and 731cm-1 is 0.5 or larger; and blended compounds with other polyolefin resins containing 50 weight% or more of the above copolymers.
  • the thickness of the crystalline polypropylene resin films can be optional, and it is preferably 30 to 80 ⁇ m.
  • Metal foils used in the present invention are whatever can be easily torn by hands, including forms of metal sheets and metal films.
  • metals aluminum is preferable, that is, an aluminum foil is more preferable.
  • the thickness of the metal foils can be optional as far as they can be easily torn by hands, and it is preferably about 3 to 10 ⁇ m.
  • modified polypropylenes in the adhesive resin layer including a modified polypropylene used in the present invention a carboxylic acid modified polypropylene is preferable and a maleic anhydride modified polypropylene is particularly preferable.
  • the adhesive resin layer including a modified polypropylene is preferably in the form of a single layer of a modified polypropylene resin or in the form of a double layer having a modified polypropylene resin layer and an unmodified polypropylene resin layer. Such adhesive resin layer is used so that the modified polypropylene resin layer adheres to the metal foil.
  • the unmodified polypropylene resin includes ordinary polypropylene resins.
  • the adhesive resin layer in the form of the double layer having the modified polypropylene resin and the unmodified polypropylene resin layer because it is easy to manufacture and excellent in adhesion to both of a crystalline polypropylene film and a metal foil, and a metal laminated film is obtained having the thickness enough to maintain the strength.
  • the thickness of the adhesive resin layer can be optional as far as it can tightly bond a crystalline polypropylene resin film to a metal foil, and it is preferably about 3 to 30 ⁇ m.
  • the modified polypropylene resin is about 1 to 10 ⁇ m and the unmodified polypropylene resin layer is about 9 to 20 ⁇ m.
  • the adhesive resin layer can be added as a film and then welded.
  • polyester films polyethylene terephthalate and polybutylene terephthalate are preferable. Polyethylene terephthalate is more preferable among them, and it is preferable to use a film thereof having the thickness of about 9 to 20 ⁇ m.
  • oriented nylon films it is preferable to stretch 6 nylon or 66 nylon films and to use those having the thickness of about 10 to 30 ⁇ m.
  • UV cure adhesives such as acrylic adhesives and methacrylic adhesives
  • heat-hardening (cure) adhesives such as urethane adhesives (isocyanate adhesives) and epoxy adhesives.
  • heat-hardening adhesives are more preferable as adhesives forming an adhesive layer which exists on at least one side (preferably both sides) of the oriented nylon film.
  • an ink layer may be set on the adhesive coating surface of a polyester film in order to indicate the ingredients or the trade name.
  • adhesives used for bonding a nylon film to a metal foil or a metal film those described as the adhesives used for bonding a polyester film and a oriented nylon film can be used.
  • the methods for producing a metal laminated film used for a retort pouch of the present invention are not particularly limited, and such film can be produced by ordinary laminating methods used for producing a retort pouch, such as dry-laminating, by laminating constituent films in any order.
  • the following production method is particularly preferable.
  • the first multilayer film three film layers are produced in accordance with the method described in Japanese Patent Publication (JP Kokoku) No. Hei 1-54191, consisting of a crystalline polypropylene resin film, an adhesive resin layer including a modified polypropylene, and a metal foil.
  • the film is produced by dry-laminating, consisting the step of bonding the polyester film to a oriented nylon film through an adhesive layer. Then, the nylon film of the second multilayer film are bonded to the metal foil of the first multilayer film by using an adhesive(s) in accordance with dry-laminating.
  • the corner portion of the pouch 1 can be easily parted to form an opening by cutting the two metal laminate films 2 along the notch portion 14 precut 22 and the extension line L thereof. Moreover, by engaging the extended portion 20 of the notch portion 14 to another container to which the contents of pouch 1 are to be transferred, the pouch 1 can be reliably affixed with respect to the other container while pouring out its contents, thereby enabling the contents to be transferred quickly and reliably to the other container without spillage.
  • the laminate film which forms the pouch 1 in the present embodiment is comparatively hard, making it resistant to a loss of shape of the opening formed by cutting when pouring out the contents, and thus enabling rapid pouring out.
EP04788360A 2003-09-30 2004-09-30 Beutel für erhitzbare nahrungsmittel Active EP1669303B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003339847 2003-09-30
PCT/JP2004/014332 WO2005030601A1 (ja) 2003-09-30 2004-09-30 レトルト食品用パウチ

Publications (3)

Publication Number Publication Date
EP1669303A1 true EP1669303A1 (de) 2006-06-14
EP1669303A4 EP1669303A4 (de) 2007-09-19
EP1669303B1 EP1669303B1 (de) 2009-09-02

Family

ID=34386189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04788360A Active EP1669303B1 (de) 2003-09-30 2004-09-30 Beutel für erhitzbare nahrungsmittel

Country Status (7)

Country Link
US (1) US20060177162A1 (de)
EP (1) EP1669303B1 (de)
JP (1) JP4707015B2 (de)
AT (1) ATE441595T1 (de)
DE (1) DE602004022957D1 (de)
ES (1) ES2329045T3 (de)
WO (1) WO2005030601A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2502849A1 (de) * 2011-03-24 2012-09-26 Marc Mamiye Beutel mit mehreren einzeln zugänglichen Kammern zur Inhaltsausgabe

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
WO2008033919A2 (en) * 2006-09-12 2008-03-20 General Mills, Inc. Pouch opening feature
DE202011051309U1 (de) * 2011-09-15 2012-12-17 Cofresco Frischhalteprodukte Gmbh & Co. Kg Beutel für die Aufbewahrung und Zubereitung von Lebensmitteln
US8794836B2 (en) 2011-10-12 2014-08-05 Cryovac, Inc. Easy-open heat-shrinkable packaging article and package made therefrom
ES2527656T3 (es) * 2012-02-29 2015-01-28 Lts Lohmann Therapie-Systeme Ag Envase tipo bolsa apilable
WO2014113016A1 (en) 2013-01-18 2014-07-24 Perfecseal, Inc. Tear-open pouch for fragile thin materials
USD757534S1 (en) * 2014-04-11 2016-05-31 Tenga Co., Ltd. Package container for sperm sampler
US10406016B1 (en) * 2014-07-30 2019-09-10 Readysplints L.L.C. Splint kit set
CN107531365B (zh) * 2015-04-16 2019-06-07 东洋制罐株式会社 包装袋
JP6656878B2 (ja) * 2015-10-23 2020-03-04 株式会社細川洋行 包装袋及び包装袋の製造方法
CN112407574B (zh) * 2020-11-25 2022-04-26 浙江庞度环保科技股份有限公司 一种确定粉料包装切口倾斜角度的方法

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WO1995030590A1 (en) * 1994-05-10 1995-11-16 The Procter & Gamble Company Refill pouch for containers
US5795071A (en) * 1994-07-20 1998-08-18 Ajinomoto Co., Inc. Standing pouch
JPH11310254A (ja) * 1998-04-28 1999-11-09 Dainippon Printing Co Ltd 包装袋
EP1203655A1 (de) * 2000-11-06 2002-05-08 Sonoco Development, Inc. Sterilisierbarer Beutel

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Publication number Priority date Publication date Assignee Title
WO1995030590A1 (en) * 1994-05-10 1995-11-16 The Procter & Gamble Company Refill pouch for containers
US5795071A (en) * 1994-07-20 1998-08-18 Ajinomoto Co., Inc. Standing pouch
JPH11310254A (ja) * 1998-04-28 1999-11-09 Dainippon Printing Co Ltd 包装袋
EP1203655A1 (de) * 2000-11-06 2002-05-08 Sonoco Development, Inc. Sterilisierbarer Beutel

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Publication number Priority date Publication date Assignee Title
EP2502849A1 (de) * 2011-03-24 2012-09-26 Marc Mamiye Beutel mit mehreren einzeln zugänglichen Kammern zur Inhaltsausgabe

Also Published As

Publication number Publication date
JPWO2005030601A1 (ja) 2007-11-15
ES2329045T3 (es) 2009-11-20
EP1669303B1 (de) 2009-09-02
ATE441595T1 (de) 2009-09-15
DE602004022957D1 (de) 2009-10-15
US20060177162A1 (en) 2006-08-10
JP4707015B2 (ja) 2011-06-22
WO2005030601A1 (ja) 2005-04-07
EP1669303A4 (de) 2007-09-19

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