US20120020590A1 - Easily tearable zipper tape and packaging bag with easily tearable zipper tape - Google Patents
Easily tearable zipper tape and packaging bag with easily tearable zipper tape Download PDFInfo
- Publication number
- US20120020590A1 US20120020590A1 US13/148,102 US201013148102A US2012020590A1 US 20120020590 A1 US20120020590 A1 US 20120020590A1 US 201013148102 A US201013148102 A US 201013148102A US 2012020590 A1 US2012020590 A1 US 2012020590A1
- Authority
- US
- United States
- Prior art keywords
- zipper tape
- thin portion
- easily tearable
- tearable zipper
- packaging 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.)
- Abandoned
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
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
-
- 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
- B65D77/10—Container closures formed after filling
Definitions
- the present invention relates to an easily tearable zipper tape and a packaging bag with the easily tearable zipper tape.
- a packaging bag provided with a zipper tape As a packaging material for packaging various articles such as food, medicine, medical products and miscellaneous goods, a packaging bag provided with a zipper tape 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 is disposed on an opening of the bag, the zipper tapes capable of being opened from the mated state and closable again.
- Such a packaging bag provided with a zipper tape is sealed at an upper side of the zipper tape.
- a film forming a bag body are torn apart starting from notches and the like provided on either side of the packaging bag.
- the film of the packaging bag is cut closely along the zipper tape to cause difficulty in pinching the bag body. Accordingly, a technique has been demanded that allows the film of the bag body to be cut at a predetermined position.
- Patent Literature 1 such an arrangement that a packaging bag can easily be cut at a predetermined position has been known.
- a belt-like base of a male member of a zipper tape attached to an inner surface of a bag body includes: a main body on which an engagement portion is provided; a first projecting portion provided to the main body near an opening of the packaging bag; a thin portion provided to the first projecting portion near the opening; and a second projecting portion provided to the thin portion near the opening.
- a belt-like base of a female member includes: a main body; a first projecting portion; a thin portion; and a second projecting portion.
- first and second projecting portions provided across the thin portion are produced thicker than the thin portion, even when a cutting line goes out of the thin portion, the thick first and second projecting portions are not cut. Accordingly, level differences are produced between the thin portion and the first projecting portion and between the thin portion and the second projecting portion, so that the thin portion is easily cut along the level differences.
- the zipper tape can easily be opened without stretching the material.
- a relatively highly rigid material e.g., polypropylene
- a cutting portion when a cutting portion is formed of a less rigid material (e.g., LL material), the cutting portion may be stretched, whereby tearing resistance may be increased because of polymer orientation at the stretched cutting portion.
- a less rigid material e.g., LL material
- Patent Literature 1 when the above typical zipper tape as disclosed in Patent Literature 1 is formed of a less rigid LL material, since flexion strength of the thin portion is remarkably weak, the thin portion may be bent in manufacturing, thus failing to exhibit cuttability.
- an object of the invention is to provide an easily tearable zipper tape that can easily be cut at a predetermined position irrespective of rigidity of a material when opening a packaging bag, while failure to exhibit cuttability caused by flexion of the zipper tape in manufacturing is avoided, and a packaging bag with the easily tearable zipper tape
- An easily tearable zipper tape is attached to an inner surface of a packaging bag, the easily tearable zipper tape including: an engagement portion at which a pair of male member and a female member are mated with each other; and belt-like bases provided continuously to the engagement portion, in which at least one of the belt-like bases includes: a main body on which the engagement portion is provided; a first projecting portion provided to the main body near an opening of the packaging bag, the first projecting portion being thicker than the main body; a thin portion provided to the first projecting portion near the opening, the thin portion being thinner than the first projecting portion and the main body; a second projecting portion provided to the thin portion near the opening, the second projecting portion being thicker than the thin portion and the main body; and a rib provided on at least one surface of the thin portion.
- the rib is preferably provided on both surfaces of the thin portion.
- the rib(s) (with a height from the thin portion) is preferably formed to be from 1.1 times to 5 times as thick as the thin portion.
- the rib preferably includes a plurality of ribs.
- a distance between the ribs is preferably in a range from 0.05 mm to 2 mm.
- a thickness of the thin portion is 0.12 mm or less, and a thickness of each of the first projecting portion and the second projecting portion is in a range from 0.20 mm to 1 mm.
- a width of the thin portion is in a range from 0.5 mm to 5 mm.
- the thin portion, the first projecting portion and the second projecting portion are formed of the same kind of resins.
- a packaging bag provided with an easily tearable zipper tape according to another aspect of the invention includes: a packaging bag having an opening through which contents are fed; and the easily tearable zipper tape according to the aspect of the invention which is attached to an inner surface of the packaging bag.
- the thin portion of the easily tearable zipper tape in the aspect of the invention is not preferably bonded to the inner surface of the packaging bag.
- 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 a cross sectional view showing the zipper tape according to the exemplary embodiment.
- FIG. 1 s a front view showing a packaging bag provided with a zipper tape according to the exemplary embodiment of the invention.
- FIG. 2 is a cross sectional view taken along II-II line in FIG. 1 .
- a packaging bag 1 A provided with a zipper tape includes a bag body 2 , which is a packaging bag provided by overlaying base material films 24 (packaging material) with each other and forming side seal portions 21 and a top seal portion 22 on the periphery thereof.
- An easily tearable zipper tape 3 A is attached to an inner surface of an opening 23 , through which contents are inserted, of the bag body 2 .
- FIG. 3 is a cross sectional view showing the easily tearable zipper tape 3 A.
- the easily tearable zipper tape 3 A includes a pair of a male member 32 and a female member 33 .
- the male member 32 is integrally formed with a belt-like base 321 that is, for instance, fused to the bag body 2 , a head 322 having a substantially arrow-tip shaped cross section, and a connecting portion 323 that connects the head 323 to the belt-like base 321 .
- the female member 33 is integrally formed with a belt-like base 331 that is, for instance, fused to the bag body 2 , and a first hook 332 and a second hook 333 that are connected to the belt-like base 331 , the first hook 332 and the second hook 333 having an arc cross section and facing each other.
- An arrangement of the male member 32 and the female member 33 is not limited to the arrangement that the male member 32 and the female member 33 are fused to the bag body 2 .
- the male member 32 and the female member 33 may be attached to the bag body 2 , for instance, with an adhesive agent.
- An engagement portion 31 is provided by the head 322 of the male member 32 and the first and second hooks 332 and 333 of the female member 33 , which are disengaged and engaged to open and re-close the easily tearable zipper tape 3 A.
- the belt-like base 331 includes a longitudinally belt-like main body 3311 on which the first and second hooks 332 and 333 are provided.
- a first projecting portion 3312 which is formed thicker than the main body 3311 , is continuously formed with the main body 3311 at a longitudinal end of the main body 3311 near an opening 23 when the main body 3311 is attached to the bag body 2 .
- a thin portion 3313 which is formed thinner than the first projecting portion 3312 , is continuously formed with the first projecting portion 3312 near the opening 23 .
- a second projecting portion 3314 which is formed thicker than the main body 3311 and the thin portion 3313 , is continuously formed with the thin portion 3313 near the opening 23 .
- a surface 3312 B of the first projecting portion 3312 near the base material film 24 and a surface 3314 B of the second projecting portion 3314 near the base material film 24 are formed to be substantially coplanarly positioned.
- the thin portion 3313 is recessed in a thickness direction relative to surfaces of the first and second projecting portions 3312 and 3314 . In other words, the thin portion 3313 is shaped like a step toward an inside of the bag body 2 .
- the thin portion 3313 is also recessed relative to a surface 3312 C of the first projecting portion 3312 near the engagement portion 31 and a surface 3314 C of the second projecting portion 3314 near the engagement portion 31 .
- the thin portion 3313 is shaped like a step toward the base material film 24 .
- the belt-like base 331 is attached to the base material film 24 while the thin portion 3313 faces the base material film 24 with a gap therebetween.
- a thickness of the thin portion 3313 is preferably 0.12 mm or less. In this exemplary embodiment, the thickness of the thin portion 3313 is set at 0.1 mm.
- a thickness of the main body 3311 is preferably 0.15 mm.
- a thickness of each of the first and second projecting portions 3312 and 3314 of the main body 3311 is preferably in a range from 0.20 mm to 1 mm, which may exemplarily be set at 0.3 mm.
- a width of the thin portion 3313 is preferably in a range from 0.5 mm to 5 mm, more preferably from 1 mm to 3 mm. In this exemplary embodiment, the width is set at 2 mm.
- Projecting ribs 3313 A each having a triangular cross section are provided in plural lines on a surface near the base material film 24 .
- the ribs 3313 A are preferably formed such that a height of each of the ribs 3313 A is lower than the step relative to the first projecting portion 3312 and the second projecting portion 3314 , and a tip of each of the ribs 3313 A does not project beyond a plane defined by the surface 3312 B of the first projecting portion 3312 near the base material film 24 and the surface 3314 B of the second projecting portion 3314 near the base material film 24 .
- a total thickness of the thin portion 3313 and the ribs 3313 A is preferably from 1.1 times to 5 times as thick as the thin portion 3313 .
- the thin portion 3313 and the ribs 3313 A are preferably arranged not to be bonded to an inner surface of the bag body 2 .
- the easily tearable zipper tape 3 A may be multi-layered, in which a seal layer is preferably provided on a portion except for the thin portion 3313 . With this arrangement, the thin portion 3313 becomes difficult to be bonded to the inner surface of the bag body 2 .
- return ribs 3311 A are provided in plural lines between the engagement portion 31 and the first projecting portion 3312 and on a flat surface of the main body 3311 near the inside of the bag body 2 .
- the return ribs 3311 A are formed such that a tip of each of the return ribs 3311 A projects opposite to the opening 23 of the bag body 2 .
- the return ribs 3311 A are formed to have approximately the same height relative to the main body 3311 as the height of the first projecting portion 3312 relative to the main body 3311 and the height of the second projecting portion 3314 relative to the main body 3311 .
- rib-like portions 34 are respectively formed near the opening 23 and on the opposite side of the engagement portion 31 from the opening 23 .
- the rib-like portions 34 are also formed to have approximately the same height as the height of the first projecting portion 3312 relative to the main body 3311 and the height of the second projecting portion 3314 relative to the main body 3311 .
- the belt-like base 321 also include a longitudinally belt-like main body 3211 on which a head 322 and a connection portion 323 are provided.
- a first projecting portion 3212 which is formed thicker than the main body 3211 , is continuously formed with the main body 3211 at a longitudinal end of the main body 3211 near the opening 23 when the main body 3211 is attached to the bag body 2 .
- a distance between the first projecting portion 3212 and the engagement portion 31 (in a mated state) is formed shorter than a distance between the first projecting portion 3312 of the belt-like base 331 and the engagement portion 31 .
- the first projecting portion 3212 and the first projecting portion 3312 are formed to be positioned at different levels.
- return ribs 3211 A are provided on the belt-like base 321 at a position corresponding to the return ribs 3311 A.
- rib-like portions 34 are respectively formed near the opening 23 and opposite to the opening 23 across the engagement portion 31 .
- resins having a lower melting point than a melting point of the thin portion 3313 and the ribs 3313 A may be laminated in the same manner as in the above-described multi-layered structure provided with a seal layer. This arrangement provides advantages to prevent the ribs 3313 A from being erroneously fused on the inner surface of the bag body 2 .
- V-shaped notches 25 that provide an opening start position are provided on either end of the thin portion 3313 ( FIG. 1 ).
- the easily tearable zipper tape 3 A can be integrally manufactured by a co-extrusion molding. With the use of co-extrusion molding for manufacturing the zipper tape 3 A, the manufacturing step can be simplified, the manufacturing cost can be lowered and the zipper tape 3 A can be continuously manufactured in a stable manner.
- any material may be used for producing the male member 32 and female member 33 of the easily tearable zipper tape 3 A as long as the male and female members are reclosable.
- polyolefin-base resins including typical polyethylene-base resins such as low-density polyethylene and linear low-density polyethylene and polypropylene-base resin are used.
- polypropylene-base resins are thermoplastic resin such as homo-polypropylene, block polypropylene, random polypropylene (RPP), propylene-ethylene-butene-1-random ternary copolymer, polyolefinic specialty soft resin (TPO resin. e.g. prime polymer TPO) and mixture of the resins.
- the base material film 24 (packaging material) forming the bag body 2 is preferably a laminate film in which a sealant layer 241 is laminated on a base layer 242 .
- a laminate film in which an intermediate layer (not shown) such as a gas-barrier layer, light-shielding layer and strength-improving layer is laminated between the base layer 242 and the sealant layer 241 may alternatively be used.
- biaxially oriented polypropylene film As well as biaxially oriented polypropylene film (OPP film), a biaxially oriented polyester film such as a biaxially oriented polyethylene terephthalate film (PET film) and a biaxially oriented polyethylene naphthalate film (PEN film), and a biaxially oriented polyamide film such as nylon 6, nylon 66 and MXD6 (poly-(meta-xylylene adipamide)) can be suitably used for the base layer 242 .
- PET film biaxially oriented polyethylene terephthalate film
- PEN film biaxially oriented polyethylene naphthalate film
- a biaxially oriented polyamide film such as nylon 6, nylon 66 and MXD6 (poly-(meta-xylylene adipamide)
- nylon 6, nylon 66 and MXD6 poly-(meta-xylylene adipamide
- the intermediate layer when the intermediate layer is a gas-barrier layer, the intermediate layer may be provided by a film of saponified ethylene-vinyl acetate copolymer (EVOH), polyvinylidene chloride (PVDC) and polyacrylonitrile (PAN), aluminum foil, a vapor-deposition layer of silica, alumina, aluminum and the like, or a coating layer of PVDC.
- EVOH ethylene-vinyl acetate copolymer
- PVDC polyvinylidene chloride
- PAN polyacrylonitrile
- the intermediate layer may be vapor-deposited or coated on the inner surface of the base layer 242 .
- the layer may be vapor-deposited or coated on a separate biaxially oriented nylon film (ONy film), biaxially oriented polyethylene terephthalate film (PET film), biaxially oriented polypropylene film (OPP film) and the like and thus prepared film may be laminated on the intermediate layer.
- ON film biaxially oriented nylon film
- PET film biaxially oriented polyethylene terephthalate film
- OPP film biaxially oriented polypropylene film
- aluminum foil and aluminum vapor-deposited layer are opaque, aluminum foil and aluminum vapor-deposited layer can also work as a light-shielding layer.
- Low-density polyethylene, polypropylene (CPP) and the like can be used as the innermost sealant layer 241 .
- the above resins may be formed as a film, which is to be laminated by a dry lamination or an extrusion lamination. Alternatively, the above resins may be laminated by extrusion coating to obtain the base material film 24 .
- the packaging bag 1 A provided with the zipper tape is manufactured by a zipper-tape-attaching three-side seal bag-making machine and the like.
- the zipper-tape-attaching three-side seal bag-making machine includes a package material feeder, a tape feeder and a zipper tape bonding section. After a pair of the base material films 24 are fed from the package material feeder, the easily tearable zipper tape 3 A fed from the tape feeder is disposed between the pair of the base material films 24 and the zipper tape 3 A and the base material films 24 are bonded at the zipper tape bonding section. Subsequently, the base material films 24 are transferred to be bonded and melt-cut at a predetermined interval in the transferring direction of the base material film 24 to form the packaging bag 1 A provided with the easily tearable zipper tape.
- the base material film 24 near the opening 23 and the base material film 24 near the contents are held to tear the bag in a direction opposing with each other from the notch 25 (cut start position). Consequently, the thin portion 3313 and the opposing base material films 24 can be torn at one time.
- the engagement portion 31 of the zipper tape 3 A is disengaged to open the packaging bag 1 A provided with the zipper tape.
- the male member 32 and the female member 33 are engaged to bring the engagement portion 31 into an engaged state.
- the easily tearable zipper tape 3 A of this exemplary embodiment is provided with the thin portion 3313 on the belt-like portion 331 , the zipper tape 3 A can be easily cut along the thin portion 3313 when the packaging bag 1 A provided with the easily tearable zipper tape is opened.
- first and second projecting portions 3312 and 3314 respectively provided on longitudinal ends of the thin portion 3313 are thicker than the thin portion 3313 , even when a cutting line goes out of the thin portion 3313 in opening the bag, the first and second projecting portions 3312 and 3314 are not to be cut and the cutting line is guided between the first and second projecting portions 3312 and 3314 , which facilitates an opening operation.
- the thin portion 3313 is provided only in the belt-like base 331 , a tearing force required in opening the bag is only enough to tear the thin portion 3313 , which is provided between the first and second projecting portions 3312 and 3314 guiding to a tearing position, and the bag body 2 .
- the tearing force is smaller than a tearing force required when the thin portion 3313 is also similarly provided in the belt-like base 321 , which can further improve openability.
- the ribs 3313 A are provided on the thin portion 3313 .
- This arrangement can prevent an increase in a tearing force which is caused by an extended thin portion 3313 in opening the bag and also can prevent the thin portion 3313 from failing to exhibit cuttability which is caused by, for instance, that the thin portion 3313 is bent by external force and the like in manufacturing and the bent thin portion 3313 is attached to the bag body 2 . Accordingly, the easily tearable zipper tape 3 A can be manufactured from soft materials, which removes the limitation of materials and improves productivity.
- the ribs 3313 A are provided in the plural lines, rigidity of the thin portion 3313 against external force is further improved to make the thin portion 3313 less bendable and realize cuttability of the thin portion 3313 more reliably.
- the easily tearable zipper tape 3 A is continuously formed of a single common material.
- the easily tearable zipper tape 3 A can be manufactured by, for instance, co-extrusion in a single step, which facilitates improvement in productivity and reduction in the manufacturing cost.
- the thickness of the thin portion 3313 is 0.12 mm or less.
- the thickness of each of the first and second projecting portions 3312 and 3314 is in a range from 0.20 mm to 1 mm.
- the width of the thin portion is in a range from 0.5 mm to 5 mm.
- the thin portion 3313 is easily cuttable and the first and second projection portions 3312 and 3314 are less cuttable. Consequently, the zipper tape is easily cuttable along the thin portion 3313 , so that linearity as well as easy-tearability can be provided to the cutting line. Further, since the first and second projecting portions 3312 and 3314 are not too thick, an excellent sealability is exhibited without influencing on process ability.
- the return ribs 3211 A and 3311 A are provided, disadvantages caused by the main bodies 3211 and 3311 being bent in manufacturing can be avoided. Since the return ribs 3211 A and 3311 A are formed to have approximately the same height as the height of the first and second projecting portions 3312 and 3314 , when the easily tearable zipper tape 3 A is fused to the base material film 24 , a seal bar can be brought into even contact with an almost entire surface of the easily tearable zipper tape 3 A. Consequently, the easily tearable zipper tape 3 A can be securely and stably fused to the base material film 24 .
- the first projecting portion 3212 and the first projecting portion 3312 are provided to have different distances from the engagement portion 31 .
- the opposing base material films 24 are cut at different levels.
- the base material films 24 at the opening 23 can be easily pinched for an easy re-opening operation.
- the first and second projecting portions 3312 and 3314 are formed thicker than the main body 3311 . Accordingly, deformation of the male member 32 and the female member 33 , which is caused by an extremely high temperature for sealing the easily tearable zipper tape 3 A, can be prevented.
- the easily tearable zipper tape 3 A is cut along the guiding first and second projecting portions 3312 and 3314 , thereby easily opening the bag.
- the thin portion 3313 is provided in the belt-like base 331 .
- the thin portion 3313 may be provided in the belt-like base 321 , or in both of the belt-like base 331 and the belt-like base 321 .
- the thickness and the width of the thin portion 3313 are not limited to the above arrangement, but may be appropriately set depending on usage and materials.
- the ribs 3313 A provided on the thin portion 3313 are in plural lines, but may be in a single line.
- a profile of the rib is not limited to a cross-sectional triangle along a longitudinal direction of the thin portion 3313 , but may be, for instance, a cross-sectional quadrangle, a cross-sectional semi-circle and a cross-sectional ellipse.
- a plurality of the ribs may be arranged to project in a dotted manner.
- the profile of the rib is not limited to the linear profile along the longitudinal direction of the thin portion 3313 , but may be corrugated profile.
- the profile of the rib is preferably the linear profile along the longitudinal direction of the thin portion 3313 as in the above exemplary embodiment.
- the ribs are provided on a surface of the thin portion 3313 near the base material film 24 .
- the ribs may be provided on an opposite surface of the thin portion 3313 , or on both of the surfaces.
- the rib-like portions 34 are provided on the main body 3211 of the belt-like base 321 and on either side of the engagement portion 31 .
- the rib-like portions 34 are also provided on the main body 3311 of the belt-like base 331 and on either side of the engagement portion 31 .
- the rib-like portions 34 may not be provided.
- the rib-like portion 34 provided on each side may be plural.
- return ribs 3211 A and 3311 A are provided, but the return ribs 3211 A and 3311 A may not be provided.
- the easily tearable zipper tape 3 A is fused to the base material film 24
- the easily tearable zipper tape 3 A may be attached to the base material film 24 with an adhesive agent and the like.
- the package on which the easily tearable zipper tape 3 A is welded is a three-side seal bag in the above exemplary embodiment, the invention can be also applied to a pillow bag, a side gusset bag or a four-side seal bag.
- An easily tearable zipper tape was manufactured under different conditions as in the following examples and comparative example. Subsequently, tearing resistance and flexion strength were examined.
- An easily tearable zipper tape including a pair of male member and a female member was obtained by co-extrusion.
- the used resin, the length of the thin portion and the thickness of the respective portions were as follows:
- Zipper tape female member: polyethylene (density 913 kg/m 3 , MFR 4.0 g/10 min)
- Width of thin portion (female member) 1.5 mm
- Thickness of thin portion 60 ⁇ m
- Total thickness of rib and thin portion 135 nm (ribs are only provided on the thin portion facing the engagement portion)
- An easily tearable zipper tape was obtained in the same manner as in Example 1 except for the thickness of the thin portion and the total thickness of the thin portion and the rib.
- Thickness of thin portion 75 ⁇ m
- Total thickness of rib and thin portion 170 ⁇ m (ribs are only provided on the thin portion facing the engagement portion)
- An easily tearable zipper tape was obtained in the same manner as in Example 1 except for the thickness of the thin portion, the total thickness of the thin portion and the rib, and the number of the ribs.
- Thickness of thin portion 75 ⁇ m
- Total thickness of rib and thin portion 200 ⁇ m (ribs are only provided on the thin portion facing the engagement portion)
- An easily tearable zipper tape was obtained in the same manner as Example 1 except that a rib is not provided.
- a 10-mm deep notch was formed in the thin portion of the easily tearable zipper tape bonded to the film.
- the zipper tape was torn away by a tensile tester.
- the maximum value of the tearing resistance was defined as strength and evaluated according to the following evaluation levels. The results are shown in Table 1.
- Evaluation B tearing resistance from 6 N/20 mm or more to less than 8 N/20 mm
- Evaluation C tearing resistance from 8 N/20 mm or more to less than 10 N/20 mm
- a 3-mm deep notch was formed in the thin portion of the easily tearable zipper tape bonded to the film.
- the zipper tape was torn by hands towards a surface where an engagement portion is provided in a 10-cm length and away from the surface in the rest 10-cm length. Tearing resistance of the thin portion at each time was checked and evaluated according to the following sensory evaluation levels. The results are shown in Table 1.
- Evaluation B small change of tearing resistance depending on the tearing directions
- Evaluation B 0 degree or more to less than 45 degrees of flexion strength after one roll
- Evaluation C 45 degree or more to less than 90 degrees of flexion strength after one roll
- Evaluation D 90 degree or more of flexion strength after one roll
- the zipper tape is cut between the first projecting portion or second projecting portion and the thin portion.
- tearing resistance may be increased.
- the zipper tape is cut between ribs on the thin portion, the ribs being the closest to the cutting line of the film, or between one of the projecting portions and a rib, thereby reducing tearing resistance.
- Examples 1 to 3 are favorable as compared with Comparative Example 1, among which Example 3 is particularly favorable.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Packages (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009026793A JP5118080B2 (ja) | 2009-02-06 | 2009-02-06 | 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 |
JP2009-026793 | 2009-02-06 | ||
PCT/JP2010/000670 WO2010090021A1 (ja) | 2009-02-06 | 2010-02-04 | 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 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/000670 A-371-Of-International WO2010090021A1 (ja) | 2009-02-06 | 2010-02-04 | 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 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/557,981 Continuation US9296522B2 (en) | 2009-02-06 | 2014-12-02 | Easily tearable zipper tape and packaging bag with easily tearable zipper tape |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120020590A1 true US20120020590A1 (en) | 2012-01-26 |
Family
ID=42541930
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/148,102 Abandoned US20120020590A1 (en) | 2009-02-06 | 2010-02-04 | Easily tearable zipper tape and packaging bag with easily tearable zipper tape |
US14/557,981 Active US9296522B2 (en) | 2009-02-06 | 2014-12-02 | Easily tearable zipper tape and packaging bag with easily tearable zipper tape |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/557,981 Active US9296522B2 (en) | 2009-02-06 | 2014-12-02 | Easily tearable zipper tape and packaging bag with easily tearable zipper tape |
Country Status (6)
Country | Link |
---|---|
US (2) | US20120020590A1 (ja) |
EP (1) | EP2394924B1 (ja) |
JP (1) | JP5118080B2 (ja) |
KR (1) | KR20110115135A (ja) |
CN (1) | CN102307789B (ja) |
WO (1) | WO2010090021A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5319334B2 (ja) * | 2009-03-05 | 2013-10-16 | パナソニック株式会社 | 照明装置 |
JP5595026B2 (ja) * | 2009-12-11 | 2014-09-24 | 出光ユニテック株式会社 | ジッパーテープ、及び、ジッパーテープ付き包装袋 |
US20120314978A1 (en) * | 2010-02-12 | 2012-12-13 | Idemitsu Unitech Co., Ltd. | Zipper tape and packing bag with zipper tape |
JP2011206231A (ja) * | 2010-03-30 | 2011-10-20 | C I Kasei Co Ltd | 嵌合具および嵌合具付き袋体 |
JP5952742B2 (ja) * | 2010-12-03 | 2016-07-13 | クラレファスニング株式会社 | 再封可能な包装袋 |
CN106307833A (zh) * | 2015-06-15 | 2017-01-11 | 北京市射线应用研究中心 | 多槽密封拉链 |
JP2019176995A (ja) * | 2018-03-30 | 2019-10-17 | タキロンシーアイ株式会社 | 嵌合具及び嵌合具付き袋体 |
JP7065674B2 (ja) * | 2018-03-30 | 2022-05-12 | タキロンシーアイ株式会社 | 嵌合具及び嵌合具付き袋体 |
JP7065675B2 (ja) * | 2018-03-30 | 2022-05-12 | タキロンシーアイ株式会社 | 嵌合具及び嵌合具付き袋体 |
KR102180423B1 (ko) | 2019-04-16 | 2020-11-18 | 한국타이어앤테크놀로지 주식회사 | 벨트의 내구성이 향상된 타이어 |
Citations (13)
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 |
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 (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6362349U (ja) * | 1986-10-13 | 1988-04-25 | ||
JPH08268442A (ja) * | 1995-03-30 | 1996-10-15 | Toshiichi Yamada | 易開封性包装袋及び開封誘導フィルム付きジッパー |
JPH09301383A (ja) * | 1996-05-16 | 1997-11-25 | Totani Giken Kogyo Kk | プラスチック袋 |
AUPR105600A0 (en) | 2000-10-27 | 2000-11-23 | International Consolidated Business Pty Ltd | Reclosable plastic bags |
JP4090830B2 (ja) * | 2001-12-20 | 2008-05-28 | 大日本印刷株式会社 | チャックテープ付き袋およびその製造方法 |
JP4011921B2 (ja) * | 2002-01-18 | 2007-11-21 | 大日本印刷株式会社 | チャックテープ付き袋およびその製造方法 |
EP2103541A4 (en) * | 2006-09-22 | 2014-01-08 | Idemitsu Unitech Co Ltd | EASILY TAPPED FASTENING TIE, FIXING STRIP MANUFACTURING METHOD, PACKAGING BAG WITH EASILY TAPPED FASTENING STRIP, AND DEVICE AND METHOD FOR MANUFACTURING PACKAGING BAG |
-
2009
- 2009-02-06 JP JP2009026793A patent/JP5118080B2/ja active Active
-
2010
- 2010-02-04 CN CN201080006736.XA patent/CN102307789B/zh not_active Expired - Fee Related
- 2010-02-04 US US13/148,102 patent/US20120020590A1/en not_active Abandoned
- 2010-02-04 EP EP10738362.2A patent/EP2394924B1/en not_active Not-in-force
- 2010-02-04 KR KR1020117018989A patent/KR20110115135A/ko not_active Application Discontinuation
- 2010-02-04 WO PCT/JP2010/000670 patent/WO2010090021A1/ja active Application Filing
-
2014
- 2014-12-02 US US14/557,981 patent/US9296522B2/en active Active
Patent Citations (13)
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 |
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 |
Also Published As
Publication number | Publication date |
---|---|
CN102307789B (zh) | 2014-04-16 |
WO2010090021A1 (ja) | 2010-08-12 |
US9296522B2 (en) | 2016-03-29 |
KR20110115135A (ko) | 2011-10-20 |
EP2394924A4 (en) | 2013-02-06 |
EP2394924B1 (en) | 2013-11-27 |
EP2394924A1 (en) | 2011-12-14 |
CN102307789A (zh) | 2012-01-04 |
JP5118080B2 (ja) | 2013-01-16 |
US20150086139A1 (en) | 2015-03-26 |
JP2010179950A (ja) | 2010-08-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9296522B2 (en) | Easily tearable zipper tape and packaging bag with easily tearable zipper tape | |
US8066434B2 (en) | Chuck tape with cut tape, its manufacturing method, and packaging bag with chuck 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 | |
US9085393B2 (en) | Easy to open zipper tape, and packaging bag with easy to open zipper tape | |
US10940978B2 (en) | Zipper and zipper-equipped bag | |
US8714821B2 (en) | Cutting tape and packaging bag with cutting tape | |
US8753011B2 (en) | Easily openable fastener tape, packaging bag with easily openable fastener tape, and method of manufacturing easily openable fastener tape | |
JP4805742B2 (ja) | チャックテープ付き包装袋 | |
KR20070039084A (ko) | 척 테이프가 부착된 주머니 | |
US20120275730A1 (en) | Zipper tape and packaging bag with zipper tape | |
US20140233869A1 (en) | Easily openable fastener tape, packaging bag with easily openable fastener tape, and method of manufacturing easily openable fastener tape |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: IDEMITSU UNITECH CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TAMAOKI, TOMOHIKO;REEL/FRAME:026707/0692 Effective date: 20110623 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |