US20120275730A1 - Zipper tape and packaging bag with zipper tape - Google Patents

Zipper tape and packaging bag with zipper tape Download PDF

Info

Publication number
US20120275730A1
US20120275730A1 US13/514,615 US201013514615A US2012275730A1 US 20120275730 A1 US20120275730 A1 US 20120275730A1 US 201013514615 A US201013514615 A US 201013514615A US 2012275730 A1 US2012275730 A1 US 2012275730A1
Authority
US
United States
Prior art keywords
zipper tape
rib
bag
thickness
thin portion
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.)
Abandoned
Application number
US13/514,615
Other languages
English (en)
Inventor
Ryo Katada
Shunichi Ito
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 Unitech Co Ltd
Original Assignee
Idemitsu Unitech 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 Unitech Co Ltd filed Critical Idemitsu Unitech Co Ltd
Assigned to IDEMITSU UNITECH CO., LTD. reassignment IDEMITSU UNITECH CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ITO, SHUNICHI, KATADA, RYO
Publication of US20120275730A1 publication Critical patent/US20120275730A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • 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
    • B65D33/2516—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 comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2533—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 comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
    • 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
    • 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
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/30—Opening or contents-removing devices added or incorporated during filling or closing of containers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2532—Zipper or required component thereof having interlocking surface with continuous cross section
    • Y10T24/2534—Opposed interlocking surface having dissimilar cross section

Definitions

  • the present invention relates to a zipper tape and a packaging bag provided with the zipper tape.
  • a packaging bag provided with a zipper tape (hereinafter, occasionally abbreviated as a “packaging bag”) have been used, in which a pair of belt-like zipper tapes respectively including a male member and a female member that are mated with each other are disposed on an opening of a bag body, the zipper tapes capable of being opened from the mated state and closable again.
  • Such a packaging bag is tightly closed by sealing the opening.
  • the packaging bag is openable by removing a seal portion in a manner to tear a base material film of the bag body from a cut or a notch formed on an edge of the packaging bag.
  • a zipper disclosed in Patent Literature 1 includes: a tape bonded to a bag body; and an easily cuttable resin layer with a predetermined width that stretches over a full length of the tape.
  • the resin layer is formed of a resin different from that of the tape.
  • a zipper tape disclosed in Patent Literature 2 includes a cutting portion along one widthwise edge of each of a male member and a female member.
  • the cutting portion includes: a first thick portion; a second thick portion; and a thin portion between the first and second thick portions, the thin portion being thinner than the first and second thick portions.
  • Patent Literature 1 JP-A-2004-244027
  • Patent Literature 2 WO2008/035494A1
  • an area as the cutting portion becomes broad since the resin layer has a predetermined width. Accordingly, depending on a manner for applying a force on the resin layer for tearing, a cutting line may be waved, so that the resin layer may not be easily torn. Moreover, in tearing the resin layer, the resin layer may be torn from two positions at both widthwise ends. In such a case, the resin layer may produce cutting fragments in a form of a fiber or a string, so that appearance may be deteriorated, or a sufficient sealing may not be obtained because the cutting fragment impairs engagement.
  • a cutting line may be waved since the thin portion has a predetermined width, or may be torn from plural positions to produce cutting fragments.
  • An object of the invention is to provide an easily openable zipper tape and a packaging bag provided with the zipper tape.
  • a zipper tape includes: a pair of belt-like bases respectively having a male member and a female member, the male member and the female member being engageable to each other, in which at least one of the pair of belt-like bases is provided with a cutting portion at an end thereof, the cutting portion including: a pair of thick portions that are thicker than a thickness of the at least one of the pair of belt-like bases; a thin portion that is provided between the pair of thick portions and is thinner than a thickness of each of the thick portions; and a rib that projects from the thin portion and has substantially the same thickness as the thickness of each of the thick portions.
  • the thickness (D) of the rib is defined as a sum of a height of the rib projecting from the thin portion and the thickness of the thin portion, and a ratio ((D)/(D2)) of the thickness (D) of the rib to the thickness (D2) of each of the thick portions is from 0.8 to 1.2.
  • a ratio ((D2)/(D1)) of the thickness (D2) of each of the thick portions to the thickness (D1) of the thin portion is from 3 to 12.
  • a bonding layer is provided on a surface of each of the belt-like bases, the pair of thick portions and the rib.
  • the bonding layer is formed of a polyolefin resin having a melting point lower than that of a resin for the belt-like bases and the cutting portion.
  • a packaging bag provided with a zipper tape includes: a bag body having an opening through which contents are capable of being inserted; and the zipper tape according to any one of the above aspect of the invention, in which the surface of each of the belt-like bases, the thick portions and the rib of the zipper tape are bonded to an inner surface of the opening.
  • the zipper tape has the rib having substantially the same thickness as that of the thick portion. Accordingly, when bonding the zipper tape to the bag body, the thick portion and the rib can be bonded to the inner surface of the bag body. Consequently, when tearing the packaging bag provided with the zipper tape for opening, the packaging bag is cut at a single cutting position in the thin portion having a smaller tensile strength that those of the thick portion and the rib. Consequently, cutting fragments are not generated. Moreover, since a cutting line is positioned by the rib, the cutting line is not waved, so that the packaging bag can easily be torn with an excellent linear cutting performance.
  • FIG. 1 is a front view showing a packaging bag provided with a zipper tape according to an exemplary embodiment of the invention.
  • FIG. 2 is a cross sectional view taken along II-II in FIG. 1 .
  • FIG. 3 is an enlarged cross-sectional view of a cutting portion of the packaging bag provided with the zipper tape.
  • FIG. 4 is an enlarged front view of the vicinity of a notch of the packaging bag provided with the zipper tape.
  • FIG. 5 is a cross sectional view showing a packaging bag provided with a zipper tape according to another exemplary embodiment.
  • FIG. 6 is a cross sectional view showing a packaging bag provided with a zipper tape according to Comparative 1.
  • FIG. 7 is a cross sectional view showing a packaging bag provided with a zipper tape according to Comparative 2.
  • FIG. 1 is a front view showing a packaging bag provided with a zipper tape according to an exemplary embodiment of the invention.
  • FIG. 2 is a cross sectional view taken along II-II line in FIG. 1 .
  • FIG. 3 is an enlarged cross-sectional view of a cutting portion of the packaging bag provided with the zipper tape.
  • a packaging bag 1 provided with a zipper tape includes a bag body 2 and a zipper tape 3 bonded to an inner surface 211 A of the bag body 2 .
  • the bag body 2 is formed by superposing base material films (wrapping material) 21 and includes side seal portions 22 and a top seal portion 23 on the periphery thereof.
  • the top seal portion 23 is formed by sealing an opening 24 through which contents is inserted into the bag body 2 .
  • a V-shaped notch 25 as a tearing start position is formed at an end of each of the side seal portions 22 near the top seal portion 23 .
  • the base material film 21 is not limited to a single layer film, but may be a laminated film in which a sealant layer 211 is laminated on a base material layer 212 .
  • a laminated film in which an intermediate layer such as a gas-barrier layer, a light-shielding layer or a strength-improving layer is laminated between the base material layer 212 and the sealant layer 211 may alternatively be used.
  • biaxially-oriented polypropylene film OPP film
  • PET film biaxially-oriented polyethylene terephthalate film
  • polyester film biaxially-oriented polyester film
  • biaxially-oriented polyamide film and the like can be suitably used as the base material layer 212 .
  • Various engineering-plastic films can also be used according to the need.
  • Low-density polyethylene, polypropylene (CPP) and the like can be used as the sealant layer 211 .
  • the zipper tape 3 is bonded on the inner surface 211 A of the opening 24 from one of the side seal portions 22 to the other thereof.
  • the zipper tape 3 includes: a female belt-like base 40 having a female member; a cutting portion 44 connected to an end of the female belt-like base 40 near the opening 24 ; a male belt-like base 50 having a male member; and a cutting portion 54 connected to an end of the male belt-like base 50 near the opening 24 .
  • the female belt-like base 40 includes: a belt-like base body 41 ; and a first hook 42 and a second hook 43 that are integrally connected to the belt-like base body 41 and provide the female member.
  • the first hook 42 and the second hook 43 are mutually faced.
  • the first hook 42 and the second hook 43 are detachably engaged with a head 53 of the male belt-like base 50 , thereby providing an engagement portion 6 .
  • the female belt-like base 40 has a bag-side surface 40 A facing the inner surface 211 A.
  • a seal layer 40 B is laminated as a bonding layer for attaching the bag-side surface 40 A to the inner surface 211 A.
  • the cutting portion 44 includes a first thick portion 45 A, a thin portion 46 , a rib 47 and a second thick portion 45 B in sequence from the engagement portion 6 toward the opening 24 .
  • the first thick portion 45 A is disposed near the engagement portion 6 .
  • the second thick portion 45 B is disposed near the opening 24 .
  • a pair of the first and second thick portions 45 A and 45 B are formed thicker than the belt-like base body 41 .
  • the first and second thick portions 45 A and 45 B are formed elongated along a longitudinal direction of the belt-like base body 41 .
  • the first thick portion 45 A has a first bag-side surface 45 A 1 that faces the inner surface 211 A and a first inner surface 45 A 2 that is opposite to the first bag-side surface 45 A 1 and faces the male belt-like base 50 .
  • a seal layer 45 A 3 is laminated for attaching the first bag-side surface 45 A 1 to the inner surface 211 A.
  • the seal layer 45 A 3 is continuously integrated with the seal layer 40 B.
  • the first thick portion 45 B also has a second bag-side surface 45 B 1 that faces the inner surface 211 A and a second inner surface 45 B 2 that is opposite to the second bag-side surface 45 B 1 and faces the male belt-like base 50 .
  • a seal layer 45 B 3 is laminated for attaching the second bag-side surface 45 B 1 to the inner surface 211 A.
  • the first and second thick portions 45 A and 45 B each have a thickness (D2).
  • the elongated thin portion 46 is disposed between the pair of the first and second thick portions 45 A and 45 B. Both longitudinal ends of the thin portion 46 are disposed correspondingly to the notches 25 .
  • the thin portion 46 has a bag-side thin-portion surface 461 that faces the inner surface 211 A and an inner thin-portion surface 462 that is opposite to the bag-side thin-portion surface 461 .
  • the bag-side thin-portion surface 461 is located at a position recessed relative to the first and second bag-side surfaces 45 A 1 and 45 B 1 in a thickness direction and toward an inside of the bag body 2 .
  • the bag-side thin-portion surface 461 of the thin portion 46 is stepped from the first and second bag-side surfaces 45 A 1 and 45 B 1 to have a predetermined distance from the inner surface 211 A, so that the bag-side thin-portion surface 461 is not bonded to the inner surface 211 A.
  • the inner thin-portion surface 462 is also located at a position recessed relative to the first and second inner surfaces 45 A 2 and 45 B 2 in a thickness direction and toward the inner surface 211 A. In other words, the inner thin-portion surface 462 of the thin portion 46 is stepped from the first and second inner surfaces 45 A 2 and 45 B 2 .
  • the thin portion 46 is substantially linearly connected to the first and second thick portions 45 A and 45 B through the rib 47 substantially in the middle of a thickness direction of each of the first and second thick portions 45 A and 45 B.
  • the thin portion 46 is formed thinner than the belt-like base body 41 and the first and second thick portions 45 A and 45 B.
  • a thickness (D1) of the thin portion 46 is preferably 50 ⁇ m or more, more preferably 60 ⁇ m or more.
  • the thin portion 46 When the thickness (D1) of the thin portion 46 is less than 50 ⁇ m, the thin portion 46 may be bent when the zipper tape 3 is bonded to the inner surface 211 A. In such a case, the rib 47 is not sufficiently bonded to the inner surface 211 A, which may hamper a linear tearing of the thin portion 46 .
  • a width of the thin portion 46 is preferably in a range from 0.5 mm to 5 mm, more preferably from 1 mm to 3 mm.
  • the width of the thin portion 46 is less than 0.5 mm, the rib 47 is difficult to form.
  • a cutting line C may not be guided along the rib 47 .
  • a ratio ((D2)/(D1)) of the thickness (D2) of each of the first and second thick portions 45 A and 45 B to the thickness (D1) of the thin portion 46 is preferably from 3 to 12, more preferably from 5 to 10.
  • the thin portion 46 may be bonded to the inner surface 211 A.
  • the rib 47 includes: a plurality of bag-side ribs 471 that project from the bag-side thin-portion surface 461 ; a plurality of inner ribs 472 that project from the inner thin-portion surface 462 ; and the thin portion 46 that is interposed between the bag-side ribs 471 and the inner ribs 472 .
  • Three bag-side ribs 471 and three inner ribs 472 are formed.
  • Each of the bag-side ribs 471 is positioned to substantially correspond to each of the inner ribs 472 in the width direction of the thin portion 46 .
  • Each of the bag-side ribs 471 has a bag-side rib surface 471 A facing the inner surface 211 A.
  • a seal layer 473 is laminated for attaching the bag-side rib surface 471 A to the inner surface 211 A.
  • the inner rib 472 has an inner rib surface 472 facing the male belt-like base 50 .
  • Each of the bag-side ribs 471 and each of the inner ribs 472 are integrated with the thin portion 46 and are elongated in a longitudinal direction of the first and second thick portions 45 A and 45 B.
  • the rib 47 has a thickness (D) substantially equal to the thickness of each of the first and second thick portions 45 A and 45 B.
  • the thickness (D) is defined as the sum of a height (H11) of the bag-side rib 471 , a height (H12) of the inner rib 472 and the thickness (D1) of the thin portion 46 .
  • a ratio ((D)/(D2)) of the thickness (D) of the rib 47 to the thickness (D2) of the first or second thick portion 45 A or 45 B is preferably from 0.8 to 1.2, more preferably 1.
  • the thickness (D) of the rib 47 is preferably in a range from 200 ⁇ m to 700 ⁇ m, more preferably from 300 ⁇ m to 600 ⁇ m.
  • the thin portion 46 may be bonded to the inner surface 211 A to hamper easy opening.
  • the male belt-like base 50 includes: a belt-like base body 51 ; and the head 53 (a male member) connected to the belt-like base body 51 through a connecting portion 52 , the head 53 being substantially arrow-head shaped in cross section.
  • the male belt-like base 50 includes the belt-like base body 51 and the cutting portion 54 at an end of the belt-like base body 51 near the opening 24 in the same manner as the cutting portion 44 of the female belt-like base 40 .
  • the cutting portion 54 includes: a pair of first and second thick portions 55 A and 55 B, a thin portion 56 , a rib 57 , a bag-side rib 571 and an inner rib 572 , which respectively correspond to the pair of the first and second thick portions 45 A and 45 B, the thin portion 46 , the rib 47 , the bag-side rib 471 and the inner rib 472 .
  • the bag-side rib 571 and the inner rib 572 of the cutting portion 54 respectively have a bag-side rib surface 571 A and an inner rib surface 572 A which correspond to the bag-side rib surface 471 A and the inner rib surface 472 A of the cutting portion 44 .
  • the male belt-like base 50 has a bag-side surface 50 A and first and second bag-side surfaces 55 A 1 and 55 B 1 which correspond to the bag-side surface 40 A and the first and second bag-side surfaces 45 A 1 and 45 B 1 .
  • Seal layers 50 B, 55 A 3 , 573 and 55 B 3 respectively corresponding to the seal layer 40 B, 45 A 3 , 473 and 45 B 3 are laminated on the bag-side surface 50 A, the first and second bag-side surfaces 55 A 1 and 55 B 1 , and the bag-side rib surface 571 A.
  • a resin for the female belt-like base 40 , the cutting portion 44 , the male belt-like base 50 and the cutting portion 54 is a crystalline polyolefin resin.
  • the crystalline polyolefin resin include low-density polyethylene (LD), linear low-density polyethylene (LL), polypropylene (PP) and a mixture thereof.
  • the resin for the seal layers 40 B, 45 A 3 , 473 and 45 B 3 is preferably a polyolefin resin.
  • the polyolefin resin preferably has a melting point lower than that of the crystalline polyolefin resin used for the female belt-like base 40 and the cutting portion 44 .
  • a resin for the seal layer 50 B, 55 A 3 , 573 and 55 B 3 is also preferably a polyolefin resin.
  • the polyolefin resin preferably has a melting point lower than that of the crystalline polyolefin resin used for the male belt-like base 50 and the cutting portion 54 .
  • the zipper tape 3 can be integrally manufactured by a co-extrusion molding. With the use of co-extrusion molding for manufacturing the zipper tape 3 , the manufacturing step can be simplified, the manufacturing cost can be lowered and the zipper tape 3 can be continuously manufactured in a stable manner.
  • the package bag 1 is manufactured using the base material film 21 and the zipper tape 3 by a zipper-tape-attaching three-side seal bag-making machine and the like.
  • the zipper-tape-attaching three-side seal bag-making machine positions the zipper tape 3 fed from a tape feeder between the base material films 21 fed from a wrapping material feeder.
  • a pair of seal bars bond the zipper tape 3 and the base material films 21 to each other by pressing the base material films 21 onto the female belt-like base 40 , the cutting portion 44 , the male belt-like base 50 and the cutting portion 54 .
  • the delivered base material films 21 are thermally bonded at a predetermined interval in a deliver direction of the base material films 21 to form a side seal portion 22 . Subsequently, the base material films 21 were cut on the side seal portion 22 to form the packaging bag 1 .
  • FIG. 4 is an enlarged front view of the vicinity of a notch of the packaging bag provided with the zipper tape.
  • the base material film 21 near the opening 24 above the notch 25 and the base material film 21 near the contents below the notch 25 are held to tear the bag in opposed directions from the notch 25 (cut start position). Since the rib 47 is bonded to the inner surface 211 A, stress concentrates on the thin portions 46 and 56 each having a small tensile strength, so that the base material films 21 are cut at the thin portions 46 and 56 on which the stress concentrates. Accordingly, since the thin portions 46 and 56 on which the stress concentrates are cut, cutting is made only at a single position. In other words, only a single cutting line C (a chain line) is made. Since positioned by the ribs 47 and 57 , the cutting line C becomes linear instead of waving.
  • the engagement portion 6 of the zipper tape 3 is disengaged to open the packaging bag 1 .
  • the first and second hooks 42 and 43 are engaged with the head 53 to bring the engagement portion 6 into an engaged state.
  • the rib 47 having the thickness (D) substantially equal to the thickness (D2) of the first and second thick portions 45 A and 45 B is provided in the cutting portion 44 of the zipper tape 3 , the first and second thick portions 45 A and 45 B and the rib 47 can be bonded to the inner surface 211 A when the zipper tape 3 is bonded to the bag body 2 . Accordingly, when tearing the packaging bag 1 for opening, the stress concentrates on the thin portion 46 having a small tensile strength, so that the packaging bag 1 can be cut at the thin portion 46 . Accordingly, cutting is made at a single cutting position to generate no cutting fragments.
  • the cutting line C is positioned by the rib 47 when tearing the packaging bag 1 , the cutting line is not waved, so that the packaging bag 1 can easily be torn with a linear cutting performance.
  • the inner rib 472 is also provided opposite to the bag-side rib 471 such that the thin portion 46 is interposed between the bag-side rib 471 and the inner rib 472 , the thin portion 46 can be reliably cut. In other words, neither the bag-side rib 471 nor the inner rib 472 is cut.
  • the thin portion 46 is located at a position recessed relative to the first and second bag-side surfaces 45 A 1 and 45 B 1 , the thin portion 46 is not bonded to the inner surface 211 A, so that the thin portions 46 and 56 can easily be cut.
  • the bag-side rib 471 and the first and second thick portions 45 A and 45 B can be favorably bonded to the inner surface 211 A.
  • the thin portion 46 is prevented from being bonded to the inner surface 211 A when manufacturing a bag. Generation of pin holes at the collapsed portion can also be prevented in the point seal process when manufacturing the bag.
  • the thin portion 46 Since the ratio ((D2)/(D1)) of the thickness (D2) of each of the first and second thick portions 45 A and 45 B to the thickness (D1) of the thin portion 46 is defined from 3 to 12, the thin portion 46 is prevented from being bonded to the inner surface 211 A and from being bent.
  • the thickness (D1) of the thin portion 46 is defined as 50 ⁇ m or more, the thin portion 46 is prevented from being bent when the zipper tape 3 is bonded to the inner surface 211 A. Accordingly, the bag-side rib 471 can favorably be bonded to the inner surface 211 A. Consequently, the packaging bag 1 exhibits an excellent linear cutting performance when being torn.
  • the zipper tape 3 can be bonded to the bag body 2 at a relatively low temperature in manufacturing the bag. Accordingly, deterioration of the base material layer 212 forming the base material film 21 of the bag body 2 can be inhibited.
  • the resin for the female belt-like base 40 is the crystalline polyolefin resin. Since the crystalline polyolefin resin is a specific resin such as polypropylene, the rib 47 can easily be molded.
  • the packaging bag 1 can easily be torn with a linear cutting performance without generation of cutting fragments.
  • the cutting portion 54 of the male belt-like base 50 of the zipper tape 3 produces the same effects as those of the cutting portion 44 .
  • FIG. 5 is a cross sectional view showing a packaging bag provided with a zipper tape according to another exemplary embodiment.
  • the thin portion 46 substantially linearly connects the first thick portion 45 A to the second thick portion 45 B in the exemplary embodiment.
  • the thin portion 46 may be provided in a non-linear manner (e.g., in a wavy manner) as shown in FIG. 5 .
  • one end of a+thin portion 46 C connected to the first thick portion 45 A may be disposed near the inner surface 211 A while the other end of the thin portion 46 C connected to the second thick portion 45 B may be near the inside of the bag body 2 , i.e., near the male belt-like base 50 .
  • the female belt-like base 40 is bonded to the inner surface 211 A through the seal layer 40 B, the female belt-like base 40 may be directly bonded to the inner surface 211 A.
  • the bag-side rib 471 and the inner rib 472 are provided to the thin portion 46 , only the bag-side rib 471 may be provided to the thin portion 46 while the inner rib 472 may not be provided thereto.
  • Such a thin portion 46 may be disposed to face the male belt-like base 50 .
  • the thin portion 46 is formed such that the inner thin-portion surface 462 is not at a position recessed relative to the first inner surface 45 A 2 and the second inner surface 45 B 2 , that is, the inner thin-portion surface 462 is substantially aligned with the first inner surface 45 A 2 and the second inner surface 45 B 2
  • each of the bag-side rib 471 and the inner rib 472 are provided to the thin portion 46 .
  • a single bag-side rib 471 and a single inner rib 472 may be provided, or plural bag-side ribs 471 and plural inner ribs 472 may be provided.
  • the number of the bag-side rib 471 may be different from the number of the inner rib 472 .
  • the cutting portions 44 and 54 are respectively provided to the female belt-like base 40 and the male belt-like base 50 .
  • only the female belt-like base 40 may be provided with the cutting portion 44
  • only the male belt-like base 50 may be provided with the cutting portion 54 .
  • FIG. 6 is a cross sectional view of a zipper tape according to Comparative 1.
  • FIG. 7 is a cross sectional view of a zipper tape according to Comparative 2.
  • a zipper tape in Example 1 was formed by extrusion with a commercially available extruding machine from the following constituent material.
  • a package bag of Example 1 as shown in FIG. 2 was manufactured using the obtained zipper tape and a base material film with a zipper-tape-attaching three-side seal bag-making machine and the like.
  • the base material film is a laminate of a 12- ⁇ m polyethylene terephthalate film and a linear low-density polyethylene (LLDPE) film.
  • LLDPE linear low-density polyethylene
  • Male belt-like base and Female belt-like base random polypropylene (density: 900 kg/m 3 , ethylene contents: 4%)
  • Seal layer a metallocene-type linear low-density polyethylene resin (melting point: 95 degrees C., MFR: 3 g/10 minutes)
  • the melting point was measured by DSC and the maximum melting peak was defined as the melting point.
  • the zipper tape manufactured under the above conditions was shaped such that the thickness (D) of the rib and the thickness (D2) of the thick portion each were 300 ⁇ m and the thickness (D1) of the thin portion was 60 ⁇ m.
  • the thin portion was not bonded to the inner surface of the bag body.
  • a zipper tape and a packaging bag were obtained in the same manner as in Example 1 except that the following constituent materials were used for the zipper tape in Example 2.
  • Male belt-like base and Female belt-like base a linear low-density polyethylene (LLDPE) resin (density: 913 kg/m 3 , MFR: 4 g/10 minutes)
  • LLDPE linear low-density polyethylene
  • Seal layer a metallocene-type linear low-density polyethylene resin (melting point: 95 degrees C., MFR: 3 g/10 minutes)
  • a zipper tape 9 A of Comparative 1 includes: a female belt-like base 91 A having a female member 91 A 1 ; a male belt-like base 92 A having a male member 92 A 1 ; and a cutting portion 93 A that is provided to each of the female belt-like base 91 A and the male belt-like base 92 A and is bonded to the inner surface 211 A of the bag body 2 .
  • Female belt-like base 91 A and Male belt-like base 92 A a linear low-density polyethylene (LLDPE) resin (density: 916 kg/m 3 , MFR: 8.5 g/10 minutes)
  • LLDPE linear low-density polyethylene
  • Cutting portion 93 A 80 mass % of a crystalline polyolefin resin (density: 916 kg/m 3 , MFR: 8.5 g/10 minutes) and 20 mass % of cyclic polyolefin (MFR: 30 g/10 minutes)
  • a zipper tape 9 B of Comparative 2 includes: a female belt-like base 91 B having a female member 91 B 1 ; and a male belt-like base 92 B having a male member 92 B 1 , the female belt-like base 91 B and the male belt-like base 92 B being bonded through a seal layer 93 B.
  • Each of the female belt-like base 91 B and the male belt-like base 92 B has a pair of thick portions 94 A and 94 B and a thin portion 95 connecting the pair of thick portions 94 A and 94 B to each other.
  • Comparative 3 a zipper tape and a packaging bag were obtained in the same manner as in Example 1 except that the thickness (D1) of the thin portion was defined as 40 ⁇ m.
  • Comparative 4 a zipper tape and a packaging bag were obtained in the same manner as in Example 1 except that the thickness (D) of the rib was defined as 100 ⁇ m.
  • Comparative 5 a zipper tape and a packaging bag were obtained in the same manner as in Example 1 except that the thickness (D) of the rib was defined as 800 ⁇ m.
  • a notch was formed on an end of each of the packaging bags.
  • Each of the packaging bags was torn from the notch.
  • the packaging bags were evaluated in accordance with the following evaluation standard. The results are shown in Table 2.
  • the cutting portion is always cut at a single position.
  • the cutting portion is cut at two or more positions to generate cutting fragments.
  • a notch was formed on an end of each of the packaging bags.
  • a breaking strength until a tensile speed reached 300 m/min and a breaking length reached 60 mm was measured by a digital force gauge (manufactured by IMADA, Incorporated). The measurement results were evaluated in accordance with the following evaluation standard. The results are shown in Table 2.
  • A easily openable without resistance (breaking strength: 5 N/60 mm or less)
  • a notch was formed on an end of each of the packaging bags.
  • Each of the packaging bags was torn from the notch.
  • a positional deviation of a breaking point from the notch was measured and evaluated in accordance with the following evaluation standard. The results are shown in Table 2.
  • A The thin portion was not bonded to the inner surface of the bag body.
  • the thickness (D1) of the thin portion of the zipper tape of the invention is desirably about 60 ⁇ m and the thickness (D) of the rib is desirably about 300 ⁇ m.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
US13/514,615 2009-12-11 2010-12-06 Zipper tape and packaging bag with zipper tape Abandoned US20120275730A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009-281228 2009-12-11
JP2009281228A JP5595026B2 (ja) 2009-12-11 2009-12-11 ジッパーテープ、及び、ジッパーテープ付き包装袋
PCT/JP2010/071785 WO2011070996A1 (ja) 2009-12-11 2010-12-06 ジッパーテープ、及び、ジッパーテープ付き包装袋

Publications (1)

Publication Number Publication Date
US20120275730A1 true US20120275730A1 (en) 2012-11-01

Family

ID=44145540

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/514,615 Abandoned US20120275730A1 (en) 2009-12-11 2010-12-06 Zipper tape and packaging bag with zipper tape

Country Status (8)

Country Link
US (1) US20120275730A1 (https=)
EP (1) EP2511186A4 (https=)
JP (1) JP5595026B2 (https=)
KR (1) KR20120102697A (https=)
CN (1) CN102652097A (https=)
CA (1) CA2781662A1 (https=)
TW (1) TW201134725A (https=)
WO (1) WO2011070996A1 (https=)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110311169A1 (en) * 2010-06-22 2011-12-22 Johnson & Son, Inc. Tactile enhancement mechanism for a closure mechanism
US20120207409A1 (en) * 2009-10-19 2012-08-16 Ryo Katada Easy to open zipper tape, and packaging bag with easy to open zipper tape
US20120314978A1 (en) * 2010-02-12 2012-12-13 Idemitsu Unitech Co., Ltd. Zipper tape and packing bag with zipper tape
US10815043B2 (en) 2016-08-01 2020-10-27 Idemitsu Unitech Co., Ltd. Tape and bag body
KR20220069951A (ko) * 2019-09-27 2022-05-27 이데미쓰 유니테크 가부시키가이샤 테이프, 지퍼 테이프, 테이프가 부착된 용기 및 그 제조 방법
US20220332472A1 (en) * 2019-09-20 2022-10-20 Idemitsu Unitech Co.,Ltd. Tape, zipper tape, tape-equipped container, and zipper tape-equipped container

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455489A (en) * 1981-11-19 1984-06-19 Varian Associates, Inc. Quadrupole singlet focusing for achromatic parallel-to-parallel devices
JP2013028394A (ja) * 2011-07-29 2013-02-07 Fuji Tokushu Shigyo Kk ジッパー付ピロー包装袋及びこのピロー包装袋に用いられるジッパー
JP6041494B2 (ja) * 2012-01-23 2016-12-07 出光ユニテック株式会社 カットテープ、ジッパーテープ、及び包装袋
JP6087560B2 (ja) * 2012-09-28 2017-03-01 富士特殊紙業株式会社 ジッパー付ピロー包装袋
JP6139102B2 (ja) * 2012-11-01 2017-05-31 富士特殊紙業株式会社 直進カット補助テープ付ピロー包装袋及びその製法
JP6139290B2 (ja) * 2013-06-18 2017-05-31 富士特殊紙業株式会社 ジッパー付ピロー包装袋
CN104555037A (zh) * 2013-10-21 2015-04-29 大连竹菱包装工业有限公司 带撕裂条的一体塑料开闭条及其包装袋
JP2014196145A (ja) * 2014-06-16 2014-10-16 出光ユニテック株式会社 ジッパーテープ、及び、包装袋
JP7285642B2 (ja) * 2018-12-25 2023-06-02 タキロンシーアイ株式会社 嵌合具および嵌合具付き袋体
JP7317574B2 (ja) * 2019-05-28 2023-07-31 株式会社生産日本社 緩衝袋
CN115666315A (zh) * 2020-06-05 2023-01-31 出光统一科技株式会社 卡扣带、带卡扣带的容器以及带卡扣带的容器的制造方法
JP7822826B2 (ja) * 2021-03-02 2026-03-03 出光ユニテック株式会社 容器開封用テープ、開封用テープ付き容器および開封用テープ付き容器の製造方法
JP2022143291A (ja) * 2021-03-17 2022-10-03 出光ユニテック株式会社 テープおよびテープ付き容器
JP7676647B1 (ja) * 2024-10-03 2025-05-14 進一 塚本 袋の開け口

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780781A (en) * 1971-09-07 1973-12-25 Seisan Nipponsha Kk Openable bag
US3827472A (en) * 1969-12-05 1974-08-06 Seisan Nipponsha Kk Reclosable bag
US4947525A (en) * 1989-03-23 1990-08-14 Zip-Pak Incorporated Zipper closure with internal peel seal
US5527112A (en) * 1994-04-15 1996-06-18 Dowbrands L.P. Adhesive closure for flexible bag
US5564834A (en) * 1994-04-15 1996-10-15 Dowbrands L.P. Adhesive closure having enhanced burst strength for flexible bag
US5660479A (en) * 1996-02-16 1997-08-26 Reynolds Consumer Products Inc. Easy open package header
US5664303A (en) * 1995-11-06 1997-09-09 Illinois Tool Works Inc. Differential flange header package
US5672009A (en) * 1996-05-21 1997-09-30 Illinois Tool Works Inc. Reclosable pouch and zipper therefor
US5832145A (en) * 1994-04-15 1998-11-03 Dowbrands L.P. Adhesive closure for flexible bag
US6030122A (en) * 1998-03-06 2000-02-29 Illinois Tool Works Inc. Pinch-grip zipper
US20040013323A1 (en) * 2000-10-27 2004-01-22 Withers Philip Craig Reclosable plastic bags
US20040091186A1 (en) * 2002-11-07 2004-05-13 Daiwa Gravure Co. Ltd. Packaging bag with zipper
US20070206888A1 (en) * 2006-03-06 2007-09-06 Chia-Hsiang Chang Multi-pocket specimen bag incorporating easy tear lines for removal of pre-sealed inserts
US20080285896A1 (en) * 2007-05-15 2008-11-20 Nossi Taheri Plastic bag with imperforated tear area
US8066434B2 (en) * 2006-08-21 2011-11-29 Idemitsu Unitech Co., Ltd. Chuck tape with cut tape, its manufacturing method, and packaging bag with chuck tape

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09301383A (ja) * 1996-05-16 1997-11-25 Totani Giken Kogyo Kk プラスチック袋
JP4145677B2 (ja) * 2003-02-10 2008-09-03 シーアイ化成株式会社 易カット性嵌合具及び嵌合具付袋体
JP5087219B2 (ja) * 2005-11-08 2012-12-05 出光ユニテック株式会社 咬合具、これを用いた袋およびこれらの製造方法
JP4898817B2 (ja) * 2006-09-22 2012-03-21 出光ユニテック株式会社 易裂き性チャックテープ、その製造方法、易裂き性チャックテープ付き包装袋、その製造装置および製造方法
JP4994138B2 (ja) * 2007-07-18 2012-08-08 株式会社生産日本社 袋開封用テープ及び包装袋
JP5118080B2 (ja) * 2009-02-06 2013-01-16 出光ユニテック株式会社 易裂き性ジッパーテープ、および、易裂き性ジッパーテープ付き包装袋

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827472A (en) * 1969-12-05 1974-08-06 Seisan Nipponsha Kk Reclosable bag
US3780781A (en) * 1971-09-07 1973-12-25 Seisan Nipponsha Kk Openable bag
US4947525A (en) * 1989-03-23 1990-08-14 Zip-Pak Incorporated Zipper closure with internal peel seal
US5527112A (en) * 1994-04-15 1996-06-18 Dowbrands L.P. Adhesive closure for flexible bag
US5564834A (en) * 1994-04-15 1996-10-15 Dowbrands L.P. Adhesive closure having enhanced burst strength for flexible bag
US5832145A (en) * 1994-04-15 1998-11-03 Dowbrands L.P. Adhesive closure for flexible bag
US5664303A (en) * 1995-11-06 1997-09-09 Illinois Tool Works Inc. Differential flange header package
US5660479A (en) * 1996-02-16 1997-08-26 Reynolds Consumer Products Inc. Easy open package header
US5672009A (en) * 1996-05-21 1997-09-30 Illinois Tool Works Inc. Reclosable pouch and zipper therefor
US6030122A (en) * 1998-03-06 2000-02-29 Illinois Tool Works Inc. Pinch-grip zipper
US20040013323A1 (en) * 2000-10-27 2004-01-22 Withers Philip Craig Reclosable plastic bags
US20040091186A1 (en) * 2002-11-07 2004-05-13 Daiwa Gravure Co. Ltd. Packaging bag with zipper
US20070206888A1 (en) * 2006-03-06 2007-09-06 Chia-Hsiang Chang Multi-pocket specimen bag incorporating easy tear lines for removal of pre-sealed inserts
US8066434B2 (en) * 2006-08-21 2011-11-29 Idemitsu Unitech Co., Ltd. Chuck tape with cut tape, its manufacturing method, and packaging bag with chuck tape
US20080285896A1 (en) * 2007-05-15 2008-11-20 Nossi Taheri Plastic bag with imperforated tear area

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120207409A1 (en) * 2009-10-19 2012-08-16 Ryo Katada Easy to open zipper tape, and packaging bag with easy to open zipper tape
US9085393B2 (en) * 2009-10-19 2015-07-21 Idemitsu Unitech Co., Ltd. Easy to open zipper tape, and packaging bag with easy to open zipper tape
US20120314978A1 (en) * 2010-02-12 2012-12-13 Idemitsu Unitech Co., Ltd. Zipper tape and packing bag with zipper tape
US8550716B2 (en) * 2010-06-22 2013-10-08 S.C. Johnson & Son, Inc. Tactile enhancement mechanism for a closure mechanism
US20110311169A1 (en) * 2010-06-22 2011-12-22 Johnson & Son, Inc. Tactile enhancement mechanism for a closure mechanism
US10815043B2 (en) 2016-08-01 2020-10-27 Idemitsu Unitech Co., Ltd. Tape and bag body
US12258179B2 (en) * 2019-09-20 2025-03-25 Idemitsu Unitech Co., Ltd. Tape, zipper tape, tape-equipped container, and zipper tape-equipped container
US20220332472A1 (en) * 2019-09-20 2022-10-20 Idemitsu Unitech Co.,Ltd. Tape, zipper tape, tape-equipped container, and zipper tape-equipped container
KR20220069951A (ko) * 2019-09-27 2022-05-27 이데미쓰 유니테크 가부시키가이샤 테이프, 지퍼 테이프, 테이프가 부착된 용기 및 그 제조 방법
TWI855166B (zh) * 2019-09-27 2024-09-11 日商出光統一科技股份有限公司 帶、夾鏈帶、附有帶之容器及其製造方法
US11882908B2 (en) 2019-09-27 2024-01-30 Idemitsu Unitech Co., Ltd. Tape, zipper tape, and container with tape and method for manufacture therefor
US12279677B2 (en) 2019-09-27 2025-04-22 Idemitsu Unitech Co., Ltd. Tape, zipper tape, and container with tape and method for manufacture therefor
KR102842858B1 (ko) * 2019-09-27 2025-08-05 이데미쓰 유니테크 가부시키가이샤 테이프, 지퍼 테이프, 테이프가 부착된 용기 및 그 제조 방법

Also Published As

Publication number Publication date
JP2011121615A (ja) 2011-06-23
WO2011070996A1 (ja) 2011-06-16
CN102652097A (zh) 2012-08-29
EP2511186A1 (en) 2012-10-17
EP2511186A4 (en) 2014-10-29
KR20120102697A (ko) 2012-09-18
TW201134725A (en) 2011-10-16
CA2781662A1 (en) 2011-06-16
JP5595026B2 (ja) 2014-09-24

Similar Documents

Publication Publication Date Title
US20120275730A1 (en) Zipper tape and packaging bag with zipper tape
US8540428B2 (en) Easily tearable fastener tape, method of producing the fastener tape, packaging bag with easily tearable fastener tape, and device and method for producing the packaging bag
US9550617B2 (en) Zipper and zipper-equipped bag
US9085393B2 (en) Easy to open zipper tape, and packaging bag with easy to open zipper tape
US7736058B2 (en) Chuck tape and packaging bag with chuck tape
US20090119889A1 (en) Interlock tool, bag making use thereof and process for producing them
US8714821B2 (en) Cutting tape and packaging bag with cutting tape
US9296522B2 (en) Easily tearable zipper tape and packaging bag with easily tearable zipper tape
WO2008023631A1 (en) Chuck tape with cut tape, its manufacturing method, and packaging bag with chuck tape
JPWO2008041647A1 (ja) 易開封性チャックテープ、易開封性チャックテープ付き包装袋および易開封性チャックテープの製造方法
JP2016098033A (ja) チャック付き包装袋
JP5639779B2 (ja) チャックテープおよびチャックテープ付包装袋
US10815043B2 (en) Tape and bag body
US12258179B2 (en) Tape, zipper tape, tape-equipped container, and zipper tape-equipped container
JP2014114035A (ja) ジッパーテープ、ジッパーテープ付包材およびジッパーテープ付被装着物
JP6097064B2 (ja) ジッパーテープ付被装着物およびジッパーテープ付袋体
JP2014196145A (ja) ジッパーテープ、及び、包装袋
JP2010035713A (ja) チャックテープおよびチャックテープ付き包装袋
JP6847571B2 (ja) 嵌合具及び嵌合具付き袋体
JP7822826B2 (ja) 容器開封用テープ、開封用テープ付き容器および開封用テープ付き容器の製造方法
JP2020073120A (ja) 嵌合具及び嵌合具付き袋体
JP7285642B2 (ja) 嵌合具および嵌合具付き袋体
JP2016098036A (ja) チャック付き包装袋

Legal Events

Date Code Title Description
AS Assignment

Owner name: IDEMITSU UNITECH CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KATADA, RYO;ITO, SHUNICHI;REEL/FRAME:028339/0793

Effective date: 20120402

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION