EP0597650B1 - Beutel mit komplementären Profilverschlussstreifen - Google Patents

Beutel mit komplementären Profilverschlussstreifen Download PDF

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Publication number
EP0597650B1
EP0597650B1 EP93308892A EP93308892A EP0597650B1 EP 0597650 B1 EP0597650 B1 EP 0597650B1 EP 93308892 A EP93308892 A EP 93308892A EP 93308892 A EP93308892 A EP 93308892A EP 0597650 B1 EP0597650 B1 EP 0597650B1
Authority
EP
European Patent Office
Prior art keywords
resin
snap
snap zipper
zipper
bag
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
EP93308892A
Other languages
English (en)
French (fr)
Other versions
EP0597650A1 (de
Inventor
Toyokazu C/O Idemitsu Petrochemical Takubo
Ken-Ichi C/O Idemitsu Petrochemical Tanaka
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
Priority claimed from JP29862592A external-priority patent/JPH06144451A/ja
Application filed by Idemitsu Petrochemical Co Ltd filed Critical Idemitsu Petrochemical Co Ltd
Priority to EP96106556A priority Critical patent/EP0731034B1/de
Priority to EP96106557A priority patent/EP0731035A2/de
Priority to EP96106533A priority patent/EP0731033B1/de
Publication of EP0597650A1 publication Critical patent/EP0597650A1/de
Application granted granted Critical
Publication of EP0597650B1 publication Critical patent/EP0597650B1/de
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
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C3/00—Flexible luggage; Handbags
    • A45C3/04—Shopping bags; Shopping nets
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
    • A44B19/16—Interlocking member having uniform section throughout the length of the stringer

Definitions

  • This invention relates to a bag with snap zipper, which can be utilized in the fields of foods, medical products and grocery.
  • Bags with zipper are used in many fields such as those of foods, medical products and grocery.
  • a strip-like snap zipper comprising a male and a female member is provided on the bag in a sealing portion thereof.
  • various methods of producing bags with snap zipper have been proposed.
  • the bag with snap zipper which is produced as a one-piece molding from the outset, takes space due to the shape of the snap zipper. Its storage and handling, therefore, are rather inconvenient. In addition, restrictions are imposed on the structure of the base film. Accordingly, the latter method (2) which is free from the above drawbacks is recently becoming a general method.
  • the snap zipper is usually made of low density polyethylene (LDPE) or polypropylene (PP).
  • LDPE low density polyethylene
  • PP polypropylene
  • a sealant layer (which forms the innermost layer of the bag body, and to which the snap zipper is fused), is applied to a base film of the same material see e.g. EP-A-0 371 402.
  • the snap zipper is made of the same LDPE.
  • the snap zipper With a sealant layer of the same material as the snap zipper, the snap zipper can be sealed to the sealant layer without any trouble.
  • polyester resins are excellent in their heat resistance and order retention property, and thus they are used suitably as the material of the sealant layer of the bag body.
  • a bag with a snap zipper having a portion fused to the innermost polyester type resin layer of the bag body, wherein the said portion is mainly composed of polyolefin type adhesive resin.
  • the polyolefin type adhesive resin may be one in which a mixture of one or more different varieties of polyolefin are partly graft coupled to an unsaturated carboxylic acid.
  • LDPE low density polyethylene
  • L-LDPE linear low density polyethylene
  • HDPE high density polyethylene
  • EVA ethylene-vinyl acetate copolymer
  • PP polypropylene
  • PP ethylene-butene-1 copolymer
  • PBD polybutadiene
  • anhydrous maleic acid is suitably used as the unsaturated carboxylic acid.
  • the portion for fusion need be mainly composed of a polyolefin type adhesive resin.
  • the entire snap zipper including the portion for fusion may be mainly composed of a polyolefin type adhesive resin.
  • a bag with a snap zipper having a portion fused to the innermost polyester type resin layer of the bag body, wherein the said portion is mainly composed of polybutylene terephthalate (PBT) resin or polyester type elastomer, and has a bending modulus of elasticity of 10,000 kg/cm 2 or below.
  • PBT polybutylene terephthalate
  • the portion for fusion need be mainly composed of the PBT resin or polyester type elastomer.
  • the entire snap zipper including the portion for fusion may be mainly composed of the PBT resin or polyester type elastomer.
  • the bending modulus of elasticity of the resin of the portion for fusion is above 10,000 kg/cm 2 , adequate flexibility necessary for the snap zipper cannot be obtained.
  • the lower the bending modulus of elasticity of the resin the lower is the melting point of the PBT resin and polyester type elastomer, and correspondingly the temperature of fusion to the sealant layer is lower.
  • a bag with a snap zipper having a portion fused to the innermost polyester type resin layer of the bag body, wherein the said portion is mainly composed of polybutylene terephthalate (PBT) resin or polyester type elastomer, and has a bending modulus of elasticity of 10,000 kg/cm 2 or below.
  • PBT polybutylene terephthalate
  • the portion for fusion need have the above composition.
  • the entire snap zipper including the portion for fusion may be composed of (1) polyester type elastomer and a polyolefin type resin or (2) the PBT resin and a polyolefin type resin.
  • the polyolefin type resin used may be the same polyolefin as used for the snap zipper for use in the first aspect of the invention.
  • the content of the polyolefin type resin in the snap zipper is 3 to 50 % by weight, suitably 10 to 40 % by weight. If the content is below 3 % by weight, the shape retention is deteriorated. If the content is above 50 % by weight, on the other hand, thermal fusion becomes difficult.
  • the snap zipper may, if necessary, contain suitable additives (such as coloring agent, stabilizing agent, anti-oxidization agent, slip agent, anti-static agent, anti-blocking agent, etc.). Slip agent are added usually.
  • the snap zippers defined above permit use of the polyester type resin for the bag body sealant layer, to which the snap zipper is fused.
  • the snap zipper can be fused to the sealant layer without trouble. Besides, a sufficient strength of fusion between the bag body and the snap zipper is obtainable.
  • the polyester type resin as the material of the sealant layer.
  • polyester type resin examples include polyester (PET), polybutylene terephthalate (PBT) resin, polyester type elastomer, polycarbonate, etc. It is possible to use a blend resin composed of polyester and polyolefin type resins.
  • polyester type resins are excellent in heat resistance, odor retention and low drug absorption property, with the possibility of using this type of resins as the material of the sealant layer the following effects are obtainable.
  • the material of the bag body in order to provide the odor retention and low drug absorption property.
  • polyester type resins in lieu of aluminum.
  • the bag may be made transparent by dispensing with aluminum layer. By so doing, it is possible to obtain a bag, through which the content can be seen while it provides the odor retention and low drug absorption properties.
  • the bag which can be produced by using such polyester type resin, is suitable for fields, in which heat resistance such as boil and retort is required.
  • the material for the sealant layer may be used any resin other than the polyester type resins as well so long as it can be fused to the snap zipper.
  • resin examples include LDPE, L-LDPE, PP, ethylene-vinyl acetate copolymer (EVA), ethylene-methacrylic acid copolymer (EMAA), ionomer (IO), etc.
  • nylon, PET, PP, cellophane, paper, etc. may be used as desired depending on desired characteristics.
  • the snap zipper for use in the invention may be fabricated by any method. Usually, it is produced using extrusion dies having sectional profiles corresponding to its shape for molding it and then cooling the resultant molding in water.
  • the shape of the snap zipper is not limited to what comprises a male and a female member capable of chucking together, and any well-known shape may be adopted so long as it is capable of sealing and unsealing.
  • the snap zipper may be fused to the bag body with well-known means such as heat, high frequency waves, ultrasonic waves, etc.
  • a polyolefin type adhesive resin was used "ADMAR SF700” (a trade name by Mitsui Sekiyu Kagaku C)., Ltd.).
  • the melt flow ratio (MFR), density and Shore hardness (D scale) of "ADMAR SF700” are shown in Table 1 below.
  • the male member 12 is a one-piece molding and has a strip-like stem portion 14, a head portion 15 of a heart-like sectional profile and a connecting portion 16 having a rod-like sectional profile, which connects together the portions 14 and 15.
  • the female member 13 is also a one-piece molding and has a strip-like stem portion 17 serving as a portion to be fused, and a first and a second semicircular hook portion 18 and 19 formed on the stem portion 17 such that they face each other.
  • the free ends 18A and 19A of the hook portions 18 and 19 define between them a gap 21 which has a width substantially corresponding to the thickness of the connecting portion 16.
  • the engagement performance was evaluated as such: It was A (Excellent), i.e., satisfactory, if the male and female members 12 and 13 could be readily engaged. It was B (Good), i.e., common, if the two members could be engaged. It was F (Fail), i.e., defective, if the two members could be difficultly engaged or could not be engaged.
  • the stem portions 14 and 17 of the make and female members 12 and 13 were thermally fused to respective base films 23 of the bag body 22, and then three sides of the base films 23 were heat sealed, thus obtaining the embodiment of the bag 24 with snap zipper.
  • the base film 23 had a five-layer structure with four inner layers, i.e., a polyester type resin layer (15 ⁇ m), a PET layer (26 ⁇ m), a polyester type resin layer (12 ⁇ m) and an adhesive layer (5 ⁇ m), and an outer layer, i.e., a PET layer (12 ⁇ m).
  • the innermost polyester type resin layer served as the sealant layer of the bag body 22, to which the male or female member 12 or 13 was fused.
  • the thermal fusion temperature in Table 2 indicates a mechanical strength of 300 g per 15 mm of width. It was measured by using a thermal gradient tester ("HG-100" by Toyo Seiki Co., Ltd.).
  • the thermal fusion performance was evaluated as follows. It was A, i.e., satisfactory, if a strength of 300 g or above with a width of 15 mm was measured by using the thermal gradient tester noted above. It was F, i.e., defective, if the strength in the same measurement was below 300 g.
  • B indicates that both the thermal fusion and engagement performances are B
  • F indicates that at least either the thermal fusion or the engagement performance is F.
  • the individual embodiments of snap zipper 11 were produced by using polyolefin type adhesive resin. Then bags 24 with snap zipper according to the individual embodiments were produced by using the respective zippers 11.
  • ADMAR SF170 As the polyolefin type adhesive resin of the snap zipper, "ADMAR SF170”, “ADMAR SE800” and “ADMAR SE810” (trade names by Mitsui Sekiyu Kagaku CO., Ltd.) were used in the respective embodiments. The characteristics of these resins are as shown in Table 1.
  • the snap zippers 11 in Embodiments 1 to 4 are made of polyolefin type adhesive resin, they are satisfactorily flexible, excellent in the performance of sealing and unsealing of the male and female members 12 and 13 (engagement performance) and satisfactory in appearance.
  • a strip-like male and a strip-like female member 12 and 13 of the snap zipper 11 in these embodiments were produced by extrusion molding using PBT as material resin with an extruder, followed by water cooling. These members were taken up on into rolls.
  • the bending modulus of elasticity of the PBT resin was 3,500 kg/cm 2 .
  • the flexibility was evaluated with respect to the state of take-up of the male and female members 12 and 13.
  • the evaluation standards were as follows.
  • the flexibility was A (Excellent), i.e., satisfactory, if the rolls of the taken-up male and female members 12 and 13 were satisfactory in appearance. It was B (Good), i.e., common, if the rolls were rather satisfactory in appearance. It was F (Fail), i.e., defective, if the rolls were unsatisfactory in appearance.
  • the method of measurement of the thermal fusion temperature was also as in Embodiment 1.
  • the stem portions 14 and 17 of the male and female members 12 and 13 were thermally fused to base films 23 (70 ⁇ m thick) of the bag body 22, and then three sides of the films were heat sealed, thus obtaining the bag 24 with snap zipper in these embodiments.
  • the base film 23 had a five-layer structure having four inner layers, i.e., a polyester type resin layer (15 ⁇ m), a PET layer (26 ⁇ m), a polyester type resin layer (12 ⁇ m) and an adhesive layer (5 ⁇ m) and an outer layer, i.e., a PET layer (12 ⁇ m).
  • the innermost polyester type resin layer was the sealant layer of the bag body 22, to which the male or female member 12 or 13 was fused.
  • the individual comparative examples of snap zipper were produced. Then bags with snap zipper according to the individual comparative examples were produced by using the respective zippers. Incidentally, the kinds and the bending modulus of elasticity of the used resin are shown in Table 3.
  • the snap zippers 11 in Embodiments 5 to 7 are made of PBT resin having the bending modulus of elasticity of more than 10000 kg/cm 2 , they are satisfactorily flexible, excellent in the performance of sealing and unsealing of the male and female members 12 and 13 (engagement performance) and satisfactory in appearance.
  • the individual embodiments of snap zipper 11 made of polyester type elastomer were produced. Then bags with snap zipper according to the individual Embodiments were produced by using the respective zippers.
  • Embodiment 8 as polyester type elastomer was used "PELPRENE” (a trade name by Toyo Boseki Co., Ltd.), and in Embodiments 9 to 12 as polyester type elastomer was used “HYTREL” (a trade name by DUPONT-TORAY CO., Ltd.).
  • the bending modulus of elasticity and the melting point of the polyester type elastomer are shown in Table 4.
  • Embodiments 8 to 12 which are made of polyester type elastomers with a bending modulus of elasticity of 10,000 kg/cm 2 or below, it is possible to obtain the same effects as in Embodiments 5 to 7 using PBT resin. The same effects can also be obtained with the bags 24 with snap zipper 11.
  • a strip-like male and a strip-like female member 12 and 13 of each of snap zippers 11 in the individual embodiments, as shown in Figs. 1 and 2, were produced by extrusion molding using a material, which was composed of polyester type elastomer as a main material and polyolefin type resin as an auxiliary material, with an extruder, followed by water cooling.
  • the kinds and proportions of the polyolefin type resins that were used in the individual embodiments are as in Table 5.
  • the shape retention was evaluated such that the snap zipper 11 was B (Good) if it was satisfactory in the shape of the head portion 15 and hooks 18 and 19 and substantially free from twist in the stem portions (tape portions) 14 and 17, C (Fairly Good) if it had slight twist in the stem portions 14 and 17, and F (Fail) if it had much twist in the stem portions 14 and 17.
  • the heat seal temperature was measured in the same way as above.
  • B stands for a snap zipper, which is B or C in the shape retention and a heat seal strength of 15 mm width of 300 g or above
  • F stands for a zipper, which is C or F in the shape retention and has a heat seal strength of 15 mm width of 300 g or below.
  • the stem portions 14 and 17 of the male and female members 12 and 13 were then heat sealed to base films (70 ⁇ m thick) 23 of the bag body 22, and then the base films were heat sealed on three sides,thus obtaining the bag 21 with snap zipper in these embodiments.
  • the base film 23 had a three-layer structure with two inner layers, i.e., a polyester type resin layer (53 ⁇ m) and an adhesive layer (5 ⁇ m) and an outer layer, i.e., PET layer (12 ⁇ m), the innermost polyester type resin layer being a sealant layer of the bag body 22, to which the male or female 12 or 13 was fused.
  • a strip-like male and a strip-like female member of each of snap zippers in the individual embodiments were produced by using a material, which was composed of polybutylene terephthalate as a main material and polyolefin type resin as an auxiliary material as Embodiments 13 to 28. Then, by using these zippers bags with zipper in the individual Embodiments were produced.
  • the kinds and proportions of the polyolefin type resins that were used in the individual embodiments are as in Table 6.
  • these bags 24 twist snap zippers 11 have no problem in the fusion strength between the snap zippers 11 and bag body 22.
  • the bag body 24 is excellent in the sealing and unsealing of the snap zipper 11 and is satisfactory in appearance.
  • the snap zipper in Comparative Example 13 had defective shape retention because it did not contain polyolefin type resin although it contained polyester type elastomer.
  • the snap zippers in Comparative Examples 18 to 21 had some twist in the stem portion because their polyolefin type resin content exceeded the scope according to the invention although they contained polybutylene terephthalate resin and polyolefin type resin.
  • the bag with snap zipper had problems in the fusion strength between the snap zipper and bag body.

Claims (6)

  1. Ein Beutel mit Schnappverschluß, wobei der Schnappverschluß einen Teil aufweist, der an die innerste Harzschicht vom Polyestertyp des Beutelkörpers angeschweißt ist und dieser Teil in der Hauptsache aus haftendem Harz vom Polyolefin-Typ zusammengesetzt ist.
  2. Ein Beutel gemäß Anspruch 1, worin das haftende Harz vom Polyolefin-Typ eine Struktur aufweist, die als Ergebnis des teilweisen Pfropfens ungesättigter Carbonsäure auf ein Gemisch eines oder mehrerer unterschiedlicher Polyolefine erhalten wird.
  3. Ein Beutel mit Schnappverschluß, wobei der Schnappverschluß einen Teil aufweist, der an die innerste Harzschicht vom Polyestertyp des Beutelkörpers angeschweißt ist und dieser Teil in der Hauptsache aus Polybutylenterephthalatharz (PBT) oder einem Elastomer vom Polyestertyp zusammengesetzt ist, und einen Biegeelastizitätsmodul von 10.000 kg/cm2 oder darunter aufweist.
  4. Ein Beutel mit Schnappverschluß, wobei der Schnappverschluß einen Teil aufweist, der an die innerste Harzschicht vom Polyestertyp des Beutelkörpers angeschweißt ist und dieser Teil aus Material hergestellt ist, das aus einem Elastomer vom Polyestertyp oder Polybutylenterephthalatharz und Harz vom Polyolefin-Typ zusammengesetzt ist, und das Material 3 - 50 Gew.% des Harzes vom Polyolefintyp enthält.
  5. Ein Beutel gemäß Anspruch 4, worin das Material 10 - 40 Gew.% Harz vom Polyolefintyp enthält.
  6. Ein Beutel gemäß einem der vorstehenden Ansprüche, worin das Harz vom Polyestertyp gewählt wird aus der Gruppe Polyethylenterephthalat (PET), Polybutylenterephthalatharz, Elastomer von Polyester-Typ, und Polycarbonat.
EP93308892A 1992-11-09 1993-11-08 Beutel mit komplementären Profilverschlussstreifen Expired - Lifetime EP0597650B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP96106556A EP0731034B1 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben
EP96106557A EP0731035A2 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben
EP96106533A EP0731033B1 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP29862492 1992-11-09
JP29862592A JPH06144451A (ja) 1992-11-09 1992-11-09 咬合具及び咬合具付き包装袋
JP298625/92 1992-11-09
JP298624/92 1992-11-09

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP96106556A Division EP0731034B1 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben
EP96106533A Division EP0731033B1 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben

Publications (2)

Publication Number Publication Date
EP0597650A1 EP0597650A1 (de) 1994-05-18
EP0597650B1 true EP0597650B1 (de) 1998-01-28

Family

ID=26561598

Family Applications (4)

Application Number Title Priority Date Filing Date
EP96106533A Expired - Lifetime EP0731033B1 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben
EP96106557A Withdrawn EP0731035A2 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben
EP96106556A Expired - Lifetime EP0731034B1 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben
EP93308892A Expired - Lifetime EP0597650B1 (de) 1992-11-09 1993-11-08 Beutel mit komplementären Profilverschlussstreifen

Family Applications Before (3)

Application Number Title Priority Date Filing Date
EP96106533A Expired - Lifetime EP0731033B1 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben
EP96106557A Withdrawn EP0731035A2 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben
EP96106556A Expired - Lifetime EP0731034B1 (de) 1992-11-09 1993-11-08 Komplementärer Profilverschlussstreifen und Beutel mit demselben

Country Status (5)

Country Link
EP (4) EP0731033B1 (de)
KR (1) KR100296391B1 (de)
AU (1) AU679004B2 (de)
DE (3) DE69324827T2 (de)
ES (1) ES2111719T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6719678B1 (en) 2000-02-28 2004-04-13 C.L.P Industries Ltd. Recloseable retort pouch
WO2015167405A1 (en) * 2014-04-29 2015-11-05 Oonpipat Vichanya Bag or bag cover with flexible zipper, and the production method of said flexible zipper

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3650465B2 (ja) * 1996-04-12 2005-05-18 出光興産株式会社 咬合具及び咬合具付き包装袋
JPH10107A (ja) * 1996-06-17 1998-01-06 Idemitsu Petrochem Co Ltd 咬合具及び咬合具付き包装袋
US6487758B2 (en) 2001-03-21 2002-12-03 Eaton Corporation Polypropylene recloseable zipper
US8459870B2 (en) * 2007-10-22 2013-06-11 Idemitsu Unitech Co., Ltd. Interlocking device and packaging bag with interlocking device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3247489A (en) * 1988-04-07 1989-10-12 Idemitsu Petrochemical Co., Ltd. Snap zipper, bag with snap zipper, manufacture method and apparatus for bag with snap zipper, and bagging method and apparatus for bag with snap zipper
JP2750382B2 (ja) * 1988-11-29 1998-05-13 出光石油化学株式会社 咬合具および咬合具付包装用袋
US5238306A (en) * 1989-05-19 1993-08-24 Reynolds Consumer Products, Inc. Method of producing a sealing system for a reclosable webbed-wall package, and system made
JP2716226B2 (ja) * 1989-11-28 1998-02-18 出光石油化学株式会社 咬合具および咬合具付包装用袋
US5100246A (en) * 1990-10-09 1992-03-31 Illinois Tool Works Inc. Pull bead and guide rails for easy open flexible containers
US5335995A (en) * 1993-07-16 1994-08-09 Servo Corporation Of America Resilient support for a railroad wheel heat sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6719678B1 (en) 2000-02-28 2004-04-13 C.L.P Industries Ltd. Recloseable retort pouch
WO2015167405A1 (en) * 2014-04-29 2015-11-05 Oonpipat Vichanya Bag or bag cover with flexible zipper, and the production method of said flexible zipper

Also Published As

Publication number Publication date
EP0731035A2 (de) 1996-09-11
DE69324827T2 (de) 1999-09-16
KR100296391B1 (ko) 2001-10-24
AU679004B2 (en) 1997-06-19
DE69316712D1 (de) 1998-03-05
DE69316712T2 (de) 1998-05-14
EP0597650A1 (de) 1994-05-18
EP0731033A3 (de) 1996-09-25
EP0731033B1 (de) 1999-05-06
DE69324827D1 (de) 1999-06-10
EP0731034B1 (de) 1999-05-06
EP0731033A2 (de) 1996-09-11
EP0731034A2 (de) 1996-09-11
DE69324828D1 (de) 1999-06-10
EP0731035A3 (de) 1996-09-18
ES2111719T3 (es) 1998-03-16
AU5052893A (en) 1994-05-19
EP0731034A3 (de) 1996-09-18
DE69324828T2 (de) 1999-09-16
KR940010950A (ko) 1994-06-20

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