EP0683105B1 - Valve de désaérage pour sac refermable - Google Patents

Valve de désaérage pour sac refermable Download PDF

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Publication number
EP0683105B1
EP0683105B1 EP95303246A EP95303246A EP0683105B1 EP 0683105 B1 EP0683105 B1 EP 0683105B1 EP 95303246 A EP95303246 A EP 95303246A EP 95303246 A EP95303246 A EP 95303246A EP 0683105 B1 EP0683105 B1 EP 0683105B1
Authority
EP
European Patent Office
Prior art keywords
bag
deaerating
snap
fastener
film
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.)
Expired - Lifetime
Application number
EP95303246A
Other languages
German (de)
English (en)
Other versions
EP0683105A1 (fr
Inventor
Shuichi C/O Idemitsu Petrochemical Co. Ltd. Goto
Kenichi C/O Idemitsu Petrochem. Co. Ltd. Tanaka
Hiroshi C/O Idemitsu Petrochem. Co. Ltd. Odaka
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.)
Idemitsu Petrochemical Co Ltd
Original Assignee
Idemitsu Petrochemical Co Ltd
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 Idemitsu Petrochemical Co Ltd filed Critical Idemitsu Petrochemical Co Ltd
Publication of EP0683105A1 publication Critical patent/EP0683105A1/fr
Application granted granted Critical
Publication of EP0683105B1 publication Critical patent/EP0683105B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags

Definitions

  • This invention relates to a snap-fastener bag, and more particularly, is available for various uses such as a quilt sack and a clothes bag.
  • the packing bag has been also used as a quilt sack and clothes bag.
  • the snap-fastener bag used for the quilt sack and clothes bag is characterised by having a snap fastener of a sealing type and by diminishing its capacity by means of deaeration.
  • the well-known deaerating method has steps of opening a part of the snap fastener, pressuring with weight or inhaling air with a vacuum cleaner in order to remove air from the bag and closing quickly the snap fastener.
  • US-A-4532652 discloses a bag comprising a flexible film, closure means, and a one-way air valve for deaerating the bag when closed.
  • the valve is closed by the film of the bag itself acting as a flapper.
  • the film In its rest position, the film is seated against a stiff plastic member which is adhered to the inner surface of the film except at regions surrounding venting holes therein, at which regions it may move away from the plastic member, thereby deaerating the bag.
  • a snap-fastener bag according to the present invention is defined in claim 1.
  • An original shape of a snap fastener in the snap-fastener bag need not only be limited to one shape formed with a pair of half members intermeshing each other, but may be of any known shape capable of intermeshing to each other.
  • the snap fastener capable of connecting to each face of a female half-member and a male half-member is recommended as the snap fastener employed in the present invention to obtain fine airtightness.
  • the snap fastener may be parallel provided under the opening with more than two lines.
  • the number of deaerating passage is not limited into one deaerating passage but also may be over two deaerating passages provided in response to a shape or largeness of the bag.
  • the deaerating passage can be provided in the bag body itself or on the outside of the bag body to connect.
  • the deaerating passage maintains stickiness by forming a paint film made of a sticky substance.
  • the paint film made of the sticky substance is formed by coat, print, lamination or the like.
  • the sticky substance has the recommendatory kinematic-viscosity of 4 - 5,000 ⁇ 10 -6 m 2 /s (100°C).
  • Quantity of the coated sticky substance may be defined in response to the viscosity of the sticky substance coated on the paint film in the bag.
  • the sticky substance consists of more than one selected from polybutene, silicon oil, glycerin, edible oil, mineral oil.
  • the deaerating passage is configurated by at least one adhesive part formed between up-and-bottom films organizing the bag body.
  • the deaerating passage is configurated in the bag body.
  • the deaerating passage may be structured by adhering a middle-film on one of the up-and-bottom films organizing the bag body.
  • the inside of the films organizing the whole bag body is made of a material having stickiness.
  • polyolefin such as polypropylene (PP), polyethylene (PE) and ethylene-vinyl-acetate copolymer (EVA), poly vinyl chloride (PVC), polyethylene terephthalate (PET) or nylon (Ny) or copolymer or denaturization thereof can be nominated.
  • PP polypropylene
  • PE polyethylene
  • EVA ethylene-vinyl-acetate copolymer
  • PVC poly vinyl chloride
  • PET polyethylene terephthalate
  • nylon nylon
  • the material is not limited in the above example, or it may be possible for the material to maintain the contacting state between the inside of the up-and-bottom films in the bag body so as to stop almost the flow of air in the deaerating passage under condition that force from outside is not added to the bag.
  • the deaerating passage pressuring to the bag with a contents in the closing state of the deaerating passage, the deaerating passage is opened to remove air by high internal pressure.
  • the deaerating passage according to the present invention works as a nonreturn valve capable of flowing air in one direction, from the inside of the bag to the outside.
  • a snap-fastener bag according to the first embodiment of the present invention will be explained with reference to Figs. 1 - 5.
  • the snap-fastener bag 11 is composed of a bag body 12, a deaerating passage 13 provided up a bottom-seal and a snap fastener 21 provided parallel under an opening 14.
  • the bag body 12 has side-seals 16A, 16B and the bottom-seal 16C which are integrated by adhering between top-and-bottom resin films 15.
  • the resin film 15 is of a multilayer film laminated with a nylon-film as an outer side layer and a liner chain low-density polyethylene (L-LDPE) film as an inner side layer (an adhesive layer).
  • L-LDPE liner chain low-density polyethylene
  • the deaerating passage 13 is provided by configurating a deaerating passage opening 13A as a non-adhesive part between the side-seal 16A and the bottom-seal 16C and by configurating an adhesive part 17 from the bottom of the side-seal 16A to near the side-seal 16B with the predetermined intervals from the bottom-seal 16C in parallel to adhere between the up-and-bottom films 15.
  • the predetermined interval between the bottom-seal 16C and the adhesive part 17 may be optionally determined to have enough interval in which air pass through the deaerating passage 13 to the outside of the bag 11.
  • a paint film 19 coated with a sticky substance 18 is formed.
  • a concrete example of the sticky substance is polybutene [the kinematic-viscosity of 8 ⁇ 10 -4 m 2 /s (100°C)], and the sticky substance utilizes for silicon oil, glycerin, edible oil, mineral oil or the like.
  • the coat of the sticky substance 18 can be performed to the snap-fastener bag 11 having the adhesive part 17.
  • the snap fastener 21 is composed of a pair of a male half-member 22 and a female half-member 23, in which the male half-member 22 is adhered inside on the up film 15 composing the bag body 12 and the female half-member 23 is adhered inside on the bottom film 15.
  • the male half-member 22 is integrated with a web-like base section (a tape section) 24 as a welding portion to be welded to the bag body, a sectionally heart-shaped head section 25 and a joint section 26 to connect both sections 24 and 25 with each other.
  • the female half-member 23 is integrated with a web-like base section (a tape section) 27 to be welded to the bag body, a semi-circular first hook 28 fixed in relation to the base section 27 and a second hook symmetrical to the first hook 18. There is provided an interval 31 having about enough width for a thickness of the joint section 26 between edges 28A and 29A of both hooks 28 and 29. Since a connecting-face state of the male half-member 22 and the female half-member 23 can be obtained when the snap fastener 21 is closed, the snap fastener 21 can obtain fine airtightness .
  • Material of the snap fastener 21 is, for example, L-LDPE.
  • the snap fastener 21 is opened in order to put a contents 32 such as a quilt into the bag 11 and closed. As shown in Fig. 2, the deaerating passage 13 is still closed in the above-mentioned state.
  • the paint film 19 coated with the sticky substance 18 such as polybutene is formed in the deaerating passage 13 provided in the bag body 12, air in the bag can be easily emitted from the deaerating passage 13 to the outside of the bag during the deaerating process. Furthermore, just after deaerating, since the deaerating passage 13 is quickly and certainly closed, the deaerating state in the bag is remained for a long time as it stands by cooperative action of the internal negative pressure caused by expansion of the contents 32 and the contacting state of the deaerating passage 13 via the paint film 19.
  • the deaerating passage 13 is simply structured and easily produced by forming the adhesive part 17 next to the bottom-seal 16C of the bag body 12 and forming the paint film coated with the sticky substance 18.
  • a snap-fastener bag 35 of the second embodiment according to the present invention will be explained with reference to Fig. 6. Only one deaerating passage 13 is provided in the snap-fastener bag 11 according to the first embodiment, but the snap-fastener bag 35 includes two deaerating passages 36A, 36B which are parallel provided up the bottom-seal 16C under both of the side-seals 16A, 16B like the deaerating passage 13 according to the first embodiment.
  • the above-mentioned snap-fastener 35 can be shortened the deaerating time by reason of the deaerating passages 36A, 36B twice as many as the first embodiment when the width of the deaerating passages 36A, 36B has limits.
  • a snap-fastener bag 37 of the third embodiment according to the present invention will be explained with reference to Fig. 7.
  • the deaerating passage 13 is parallel provided up the bottom-seal 16C in the snap-fastener bag 11 according to the first embodiment, but in the snap-fastener bag 37 the deaerating passage is parallel provided next to the side-seal 16A.
  • the above-mentioned snap-fastener bag 37 is convenient when the shape of contents 32 dose not permit to provide a deaerating passage 38 up the bottom-seal 16C in parallel.
  • the snap-fastener bag 41 includes plural deaerating passages 42A, 42B, 42C Vietnamese up the bottom-seal.
  • the deaerating passages 42A, 42B, 42C.... are composed of a middle-film 44 adhered at the inside of the one resin film 15 (e.g., the upper side) near a bottom opening 43 and the other resin film (e.g., the bottom side).
  • the middle-film 44 is of a web-like film provided between both of the side-seals 16A and 16B, and an upper edge 44A at the side of the snap fastener 21 is adhered at the inside of the upper resin film 15 by a first adhesive part 45.
  • plural second adhesive parts 46 for partition are arranged in parallel direction with both of the side-seals 16A and 16B in predetermined interval. Those second adhesive parts 46 is provided to cause the upper resin film 15, the middle-film 44 and the bottom resin film 15 to adhere together.
  • the deaerating passages 42A, 42B, 42C.... are configurated by the bottom resin film 15 and the middle-film 44 arranged between the second adhesive parts 46 of side by side.
  • third adhesive parts 47 are arranged to adhere partly the middle-seal 44 near to the bottom opening 43 with the bottom resin film 15.
  • the third adhesive parts 47 cause the up-and-bottom resin films 15 to adhere quickly each other after completing the deaeration in case of the wide intervals between the second adhesive parts 46, so that in case of the narrow intervals between the second adhesive parts 46, there is no necessity to configurate the adhesive parts 47.
  • the paint films 19 having the sticky substance 18 such as polybutene are formed in the deaerating passages 42A, 42B, 42C....
  • the employment of the soft middle-film 44 causes the open-close of the deaerating passages 42A, 42B, 42C... to be able to be smooth.
  • the deaerating time can be shorten more and more.
  • Air in the bag can be deaerated in state of the bag 41 rolled from the side-seal 16A or 16B.
  • the coat of the sticky substance is carried out in order to obtain effective stickiness of the films in the deaerating passages because L-LDPE film having less stickiness is employed as the film composing the bag body.
  • L-LDPE film having less stickiness is employed as the film composing the bag body.
  • film itself having enough stickiness such as soft vinyl chloride resin, EVA, LDPE, PP-grade, in stead of the resin film employed in the embodiments.
  • the deaerating passage is provided inside of the bag body in the above-stated embodiments, but a tube film for the deaerating passage may be provided the outside of the bag to connect to the bag body, which makes easy to inhale air in the bag with a vacuum cleaner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Liquid Crystal (AREA)
  • Packages (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Claims (5)

  1. Sac à fermeture par pression (11) comprenant un corps de sac (12) formé à partir de deux films qui sont scellés ensemble sur trois côtés (16A, 16B, 16C) et qui peuvent être scellés ensemble au niveau d'un autre côté par l'intermédiaire d'une fermeture par pression (21), dans lequel un passage de désaération (13) est réalisé dans le corps de sac par une partie adhésive formée entre les deux films, caractérisé en ce que le sac comprend, dans le passage de désaération, un film déposé (19) comprenant une substance collante (18).
  2. Sac selon la revendication 1, dans lequel la substance collante a une viscosité cinématique de 4 x 10-6 m2/s à 5 000 x 10-6 m2/s, mesurée à 100°C.
  3. Sac selon l'une des revendications 1 ou 2, dans lequel la substance collante comprend au moins un élément parmi le polybutène, l'huile de silicone, la glycérine, une huile comestible, et une huile minérale.
  4. Sac à fermeture par pression (41) selon l'une des revendications précédentes, dans lequel le passage de désaération est réalisé par un film intermédiaire (44) adhérant à l'un des films constituant le corps de sac.
  5. Sac selon l'une des revendications précédentes, dans lequel chacun des films à partir duquel le sac est constitué possède une surface intérieure comprenant une matière collante.
EP95303246A 1994-05-17 1995-05-15 Valve de désaérage pour sac refermable Expired - Lifetime EP0683105B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP6102923A JPH07309351A (ja) 1994-05-17 1994-05-17 咬合具付き袋
JP102923/94 1994-05-17
CNB951150189A CN1196768C (zh) 1994-05-17 1995-07-10 液晶取向剂和液晶显示器

Publications (2)

Publication Number Publication Date
EP0683105A1 EP0683105A1 (fr) 1995-11-22
EP0683105B1 true EP0683105B1 (fr) 1998-11-25

Family

ID=37734292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95303246A Expired - Lifetime EP0683105B1 (fr) 1994-05-17 1995-05-15 Valve de désaérage pour sac refermable

Country Status (5)

Country Link
EP (1) EP0683105B1 (fr)
JP (1) JPH07309351A (fr)
CN (2) CN1092506C (fr)
DE (1) DE69506167T2 (fr)
TW (1) TW397051U (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5973768A (en) 1996-07-03 1999-10-26 Imation Corp. Light-tight bag having a trapped air exit

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2691881B2 (ja) * 1995-05-31 1997-12-17 株式会社サンエー化研 濾過面を有する逆止弁付き包装袋とその製造装置
US6149304A (en) * 1997-05-09 2000-11-21 The Procter & Gamble Company Flexible storage bag with selectively-activatible closure
US6139185A (en) * 1997-05-09 2000-10-31 The Procter & Gamble Company Flexible bag with selectively-activatible support-engagement feature
EP0887285B1 (fr) * 1997-06-19 1999-09-01 Hisao Kai Sachet pour emballage sous vide et méthode d'emballage sous vide
JP3579660B2 (ja) * 2001-04-20 2004-10-20 有限会社アピィール 脱気袋
KR100543093B1 (ko) * 2003-04-09 2006-01-20 제일모직주식회사 트리아진기를 포함한 디아민 화합물, 그로부터 제조된폴리아믹산 및 액정 배향막
CN100334493C (zh) * 2004-05-28 2007-08-29 友达光电股份有限公司 用于聚合物稳定配向过程的单体以及包括该单体生成的聚合物的液晶显示面板
US7290660B2 (en) * 2004-07-23 2007-11-06 Tilman Paul A Storage system having a disposable vacuum bag
WO2006070467A1 (fr) * 2004-12-28 2006-07-06 Tanaka, Mikio Structure de fenetre d’aeration d’un sac etanche, sac etanche et son procede de fabrication
US20060257533A1 (en) * 2005-05-12 2006-11-16 Plourde Eric P Self-venting reclosable packages
US7748904B2 (en) * 2005-05-12 2010-07-06 Illinois Tool Works Inc. Multicompartment evacuable storage bag
CN101135813B (zh) * 2006-08-29 2011-03-16 Jsr株式会社 液晶取向剂、液晶取向膜和液晶显示元件
WO2008038330A1 (fr) * 2006-09-25 2008-04-03 Osamu Kawai Sac étanche
JP2008176304A (ja) * 2006-12-22 2008-07-31 Jsr Corp 液晶配向剤、液晶配向膜、液晶表示素子および光学部材
JP5046418B2 (ja) * 2007-04-16 2012-10-10 壽一 葛西 積層フィルムを用いた包装体
JP5067570B2 (ja) * 2007-08-01 2012-11-07 Ｊｓｒ株式会社 液晶配向剤、液晶配向膜および液晶表示素子
CN101925851B (zh) * 2008-01-25 2013-09-25 日产化学工业株式会社 液晶取向剂及液晶显示元件
KR20110055637A (ko) * 2008-09-03 2011-05-25 샤프 가부시키가이샤 배향막, 배향막 재료 및 배향막을 갖는 액정 표시 장치, 및 그 제조 방법
EP2670679A4 (fr) * 2011-01-31 2016-03-30 Ultraperf Technologies Inc Soupape de vapeur auto-ventilée pour des sacs d'emballage souples et des sachets utilisés dans la cuisson d'aliments
JP6064900B2 (ja) * 2011-03-31 2017-01-25 日産化学工業株式会社 液晶配向剤、及びそれを用いた液晶配向膜
KR101444190B1 (ko) 2011-12-19 2014-09-26 제일모직 주식회사 액정 배향제, 이를 이용한 액정 배향막 및 상기 액정 배향막을 포함하는 액정표시소자
KR101387735B1 (ko) * 2011-12-22 2014-04-25 제일모직주식회사 액정 광배향제, 이를 이용한 액정 광배향막 및 상기 액정 광배향막을 포함하는 액정표시소자
KR102266366B1 (ko) * 2013-07-24 2021-06-16 닛산 가가쿠 가부시키가이샤 액정 배향제 및 그것을 사용한 액정 배향막
MY175020A (en) * 2013-10-17 2020-06-03 Sin Sheng Kuang M Sdn Bhd Package with pressure venting seal carrying surface profile
WO2019009139A1 (fr) * 2017-07-04 2019-01-10 株式会社柏原製袋 Soupape de fermeture constituée d'une feuille et sac avec soupape de fermeture
CN111838901B (zh) * 2019-04-30 2023-01-31 黄振正 夹链带

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DE6608077U (de) * 1965-11-17 1971-06-09 Hesser Ag Maschf Ueberdruckventil an verpackungen aus siegel-oder schweissfaehigen folien.
US4532652A (en) * 1983-11-16 1985-07-30 Mobil Oil Corporation Plastic bag with air exhaustion valve
JPH0314614Y2 (fr) * 1985-12-04 1991-04-02
KR900000414B1 (ko) * 1986-02-22 1990-01-30 주식회사 크린랲 식품포장용 무독성랲 필림 및 그 제조방법
FR2695108B1 (fr) * 1992-09-02 1995-04-21 Georges Paul Emballage, procédé et dispositif de conditionnement pour produit liquide, solide ou pâteux pasteurisé ou stérilisé.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5973768A (en) 1996-07-03 1999-10-26 Imation Corp. Light-tight bag having a trapped air exit

Also Published As

Publication number Publication date
DE69506167D1 (de) 1999-01-07
DE69506167T2 (de) 1999-05-06
TW397051U (en) 2000-07-01
CN1196768C (zh) 2005-04-13
CN1092506C (zh) 2002-10-16
CN1140195A (zh) 1997-01-15
CN1122216A (zh) 1996-05-15
JPH07309351A (ja) 1995-11-28
EP0683105A1 (fr) 1995-11-22

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