US20250002222A1 - Zipper tape and container equipped with zipper tape - Google Patents

Zipper tape and container equipped with zipper tape Download PDF

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Publication number
US20250002222A1
US20250002222A1 US18/707,474 US202218707474A US2025002222A1 US 20250002222 A1 US20250002222 A1 US 20250002222A1 US 202218707474 A US202218707474 A US 202218707474A US 2025002222 A1 US2025002222 A1 US 2025002222A1
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United States
Prior art keywords
base
zipper tape
container
tear strip
tape according
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Pending
Application number
US18/707,474
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English (en)
Inventor
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
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Idemitsu Unitech Co Ltd
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Publication date
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Assigned to IDEMITSU UNITECH CO.,LTD. reassignment IDEMITSU UNITECH CO.,LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ITO, SHUNICHI
Publication of US20250002222A1 publication Critical patent/US20250002222A1/en
Pending legal-status Critical Current

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    • 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
    • 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
    • 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
    • B65D33/2575—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 the slide fastener providing access to the bag through a bag wall, e.g. intended to be cut open by the consumer
    • B65D33/2583—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 the slide fastener providing access to the bag through a bag wall, e.g. intended to be cut open by the consumer the slide fastener being attached to one wall only
    • 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
    • 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
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/22—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using heat-activatable adhesive
    • 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

Definitions

  • the present invention relates to a zipper tape and a container with a zipper tape.
  • Patent Literature 1 discloses a retort pouch including: a zipper that reseals a cooking liquid, the zipper being heat-sealed on inner sides of upper portions of side surface films; and an easy-peel portion that further seals the cooking liquid and prevents the cooking liquid from adhering to the zipper, the easy-peel portion being provided continuously to the zipper. It is possible to prevent the cooking liquid from adhering to the zipper prior to unsealing, by filling the retort pouch with the cooking liquid in a state in which the zipper is open, and thereafter heat-sealing the easy-peel portion.
  • Patent Literature 1 an upper portion of a retort pouch is cut to form an opening above a zipper tape upon unsealing.
  • nylon used for a film of a container body
  • the film is not cut linearly, resulting in an unsealing failure at times.
  • a zipper tape including: a first base; a tear strip disposed in parallel with the first base at a first side in a width direction of the first base; a second base having a width larger than a width of an area including the first base and the tear strip; a first engagement portion and a second engagement portion that respectively protrude from the first base and the second base, and are engageable with each other; and a peeling portion provided on a surface of the second base near the first base, the surface being located at a portion where the second base extending beyond the first base at a second side opposite to the first side.
  • a container with a zipper tape including: a container body that includes a film; and the zipper tape according to any one of [1] to [6], the zipper tape being attached to the film, in which a part of the second base extending beyond the tear strip at the first side, the tear strip, a surface of the first base opposite to the first engagement portion, and the peeling portion are each bonded to a first surface of the film.
  • a layer of a second resin composition provided on the second base is bonded to the container body, thereby isolating the engagement portions of the zipper tape from the containing space of the container body and preventing the contents placed in the containing space from adhering to the engagement portions.
  • the layer of the second resin composition is caused to be peeled from the container body upon unsealing. Further, upon unsealing, pulling of the tear strip makes it possible to easily and linearly cut the film of the container body.
  • FIG. 1 is a cross-sectional view of a zipper tape according to one exemplary embodiment of the invention.
  • FIG. 2 is a plan view of a container with a zipper tape to which the zipper tape illustrated in FIG. 1 is attached.
  • FIG. 3 is a cross-sectional view taken along a line III-III of FIG. 2 .
  • FIG. 4 is an enlarged view of a tab portion of the container with the zipper tape illustrated in FIG. 2 .
  • FIG. 5 is a cross-sectional view taken along a line V-V of FIG. 4 .
  • FIG. 6 is a view of another example of the tab portion of the container with the zipper tape illustrated in FIG. 2 .
  • FIG. 7 is a cross-sectional view taken along a line VII-VII of FIG. 6 .
  • FIG. 8 is a diagram illustrating a state upon filling the container with the zipper tape illustrated in FIG. 3 with contents.
  • FIG. 9 is a diagram illustrating a state upon unsealing of the container with the zipper tape illustrated in FIG. 3 .
  • FIG. 10 is a diagram illustrating a modification of the container with the zipper tape illustrated in FIG. 2 .
  • the term “main component” means a component whose blending amount in a resin composition is greater than or equal to 50% mass.
  • the blending amount of the main component is preferably greater than or equal to 70 mass %, more preferably greater than or equal to 85 mass %, still more preferably greater than or equal to 90 mass %, and particularly preferably greater than or equal to 95 mass %.
  • An upper limit of the blending amount of the main component is 100 mass %; however, inclusion of impurities is also acceptable in such a case to an extent that the inclusion does not influence a performance. It is possible that a resin that is the main component in the resin composition is identified, for example, by an IR method.
  • FIG. 1 is a cross-sectional view of a zipper tape according to an exemplary embodiment of the invention.
  • a zipper tape 120 includes bases 121 A and 121 B, engagement portions 122 A and 122 B, a tear strip 123 , and a peeling layer 124 .
  • the bases 121 A and 121 B are each formed by a first resin composition that includes as a main component a polyolefin resin, specifically polypropylene, for example.
  • the first resin composition may include, for example, low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE). At least a portion of LDPE or LLDPE may be bio-polyethylene.
  • the polyolefin resin that is the main component of the first resin composition is not limited to a resin derived from a fossil fuel, and may be an environmentally friendly bio-plastic (the polyolefin resin such as bio-polypropylene or bio-polyethylene derived from biomass), or a mixture of the resin derived from the fossil fuel and the bio-plastic.
  • a known additive such as a stabilizer, an antioxidant, a lubricant, an antistatic agent, or a colorant may be added as necessary.
  • the engagement portions 122 A and 122 B respectively protrude from the bases 121 A and 121 B, and are engageable with each other.
  • the engagement portion 122 A has a male-shaped profile and the engagement portion 122 B has a female-shaped profile; however, they may be the other way around.
  • the shapes of the engagement portions 122 A and 122 B are not limited to the male and female shapes, and it is possible to employ various shapes of engagement portions of known zippers having a combination of, for example, a claw shape, a hook shape, and a knob shape. In the illustrated example, one pair of engagement portions is provided; however, multiple pairs of engagement portions may be provided.
  • the engagement portions 122 A and 122 B are each formed by, for example, the first resin composition similar to the first resin composition of the bases 121 A and 121 B described above; however, the engagement portions 122 A and 122 B may be each formed by a resin composition different from the first resin composition.
  • the tear strip 123 is disposed in parallel with the base 121 A at a first side (an upper side in FIG. 1 ) in a width direction of the base 121 A.
  • the tear strip 123 is to be separated from the base 121 A and to be pulled upon unsealing of a container, as will be described later.
  • the tear strip 123 and the base 121 A may thus be coupled to each other via an illustrated thin portion or separated from each other.
  • the tear strip 123 includes a strip body 123 A, and a peeling layer 123 C stacked on a surface, of the strip body 123 A, on a side facing the base 121 B, and the tear strip 123 may also include a bonding layer 123 B between the strip body 123 A and the peeling layer 123 C.
  • the strip body 123 A is formed by, for example, the first resin composition as with the base 121 A.
  • the peeling layer 123 C is formed by a resin composition having a peeling property with respect to the first resin composition forming the base 121 B
  • the bonding layer 123 B is formed by a resin composition that makes it possible to bond the strip body 123 A and the peeling layer 123 C to each other.
  • the peeling layer 123 C may be formed by a resin composition including polyethylene as the main component.
  • Providing the peeling layer 123 C makes it easier to separate the tear strip 123 from the base 121 B upon unsealing; however, it is also possible to omit the peeling layer 123 C.
  • the entire tear strip 123 may be formed by the resin composition including polyethylene as the main component.
  • the base 121 B has a width larger than a width of an area including the base 121 A and the tear strip 123 that are opposed to the base 121 B.
  • the base 121 B extends beyond the tear strip 123 at the first side in the width direction of the base 121 A, and extends beyond the base 121 A at a second side (a lower side in FIG. 1 ) opposite to the first side.
  • the predetermined locations of the bases 121 A and 121 B are defined, for example, in a state in which the engagement portions 122 A and 122 B are engaged with each other.
  • the engagement portions 122 A and 122 B do not necessarily have to be engaged with each other, and respective positions of the engagement portions 122 A and 122 B only have to be aligned with each other with respect to the width direction of the bases 121 A and 121 B.
  • a thick portion 125 B is provided on a part, of the base 121 B, that extends beyond the tear strip 123 at the first side.
  • a thick portion 125 A is provided also at the first side of the base 121 A, that is, at an end portion, of the base 121 A, on a side of the tear strip 123 .
  • Providing the thick portions 125 A and 125 B makes it possible to induce pulling of the tear strip 123 upon unsealing as will be described later, and to more reliably form an opening having an intended shape; however, it is also possible to omit the thick portions 125 A and 125 B.
  • the peeling layer 124 is provided on a part, of the base 121 B, that extends beyond the base 121 A at the second side.
  • the peeling layer 124 is formed by a second resin composition that is different from the first resin composition forming the bases 121 A and 121 B.
  • the second resin composition is a resin composition having a peeling property with respect to a film of a container body to be described later.
  • the term “having a peeling property” means that a peel strength with respect to a target is less than or equal to 30 N/15 mm.
  • the peel strength in this case is preferably less than or equal to 20 N/15 mm, more preferably less than or equal to 15 N/15 mm, and still more preferably less than or equal to 10 N/15 mm.
  • a lower limit of the peel strength is not particularly limited, and is, for example, greater than or equal to 1 N/15 mm. More specifically, the peel strength is measured by a heat gradient seal tester. The peel strength between the peeling layer 124 and the film is less than or equal to 30 N/15 mm when sealing is performed at 230° C. and 0.2 MPa for 1 second.
  • a thick portion 126 is provided at the second side of the base 121 A, i.e., at an end portion, of the base 121 A, on a side closer to the peeling layer 124 .
  • Providing the thick portion 126 makes it possible to: equalize a thickness in an entire width direction of the zipper tape 120 including the engagement portions 122 A and 122 B and the tear strip 123 so that more reliably bond each of the portions of the zipper tape 120 to the film when the zipper tape 120 is bonded to the film of the container body by, for example, being pressed in a thickness direction between seal bars.
  • the thick portion 126 is so provided as to have a thickness greater than a thickness of, for example, a part of the base 121 A where the thick portion 126 is not provided.
  • a difference in thickness is preferably greater than or equal to 100 ⁇ m, more preferably greater than or equal to 200 ⁇ m, and still more preferably greater than or equal to 300 ⁇ m.
  • An upper limit of a ratio of the difference in thickness is not particularly limited, and is less than or equal to 600 ⁇ m when assuming a size of common engagement portions 122 A and 122 B.
  • the first resin composition forming the bases 121 A and 121 B includes polypropylene as the main component.
  • the main component of the first resin composition may be another polyolefin resin, for example, polyethylene.
  • the peeling layer 123 C may be formed by a resin composition that includes polypropylene as the main component.
  • the main component of the first resin composition may be a resin other than the polyolefin resin.
  • the above-described zipper tape 120 as a whole may be manufactured, for example, through extrusion.
  • the first resin composition forming the bases 121 A and 121 B and the second resin composition forming the peeling layer 124 are coextruded.
  • a bonding layer may be stacked between the base 121 B and the peeling layer 124 .
  • the bonding layer is formed by a resin composition which makes it possible to bond the base 121 B and the peeling layer 124 to each other.
  • the zipper tape 120 may be manufactured by forming a part including the bases 121 A and 121 B through extrusion of the first resin composition, and thereafter forming the peeling layer 124 through application of the second resin composition.
  • another resin composition may be applied between the base 121 B and the peeling layer 124 to form an intermediate layer.
  • FIG. 2 is a plan view of a container with a zipper tape to which the zipper tape illustrated in FIG. 1 is attached
  • FIG. 3 is a cross-sectional view taken along a line III-III of FIG. 2
  • FIG. 2 and FIG. 3 each illustrate the container prior to unsealing.
  • a container 100 with a zipper tape includes: the container body having a bag shape including a film 110 that has a first surface 111 A facing a containing space SP; and the zipper tape 120 bonded to the first surface 111 A.
  • the film 110 has, in addition to the first surface 111 A, a second surface 111 B opposed to the first surface 111 A.
  • the first surface 111 A and the second surface 111 B each face the containing space SP.
  • the film 110 is, for example, formed by a single-layer or multi-layer thermoplastic resin. More specifically, the film 110 is, for example, formed by polypropylene, high-density polyethylene (HDPE), or linear low-density polyethylene (LLDPE).
  • polypropylene include Polypropylene Homopolymer (HPP), Polypropylene Random Copolymer (RPP), or Polypropylene Block Copolymer (BPP).
  • biaxially oriented polypropylene OPP
  • biaxially oriented polyethylene terephthalate OPET
  • biaxially oriented nylon OPN
  • These are each not limited to a resin derived from a fossil fuel, and may each be an environmentally friendly bio-plastic (the polyolefin resin such as bio-polypropylene or bio-polyethylene derived from biomass), or a mixture of the resin derived from the fossil fuel and the bio-plastic.
  • the film 110 may include a layer of an inorganic material formed by, for example, vapor-depositing aluminum or stacking an aluminum foil.
  • two films 110 are formed into the container body having the bag shape by being bonded to each other along a top seal portion 112 , a bottom seal portion 113 , and a side seal portion 114 ; however, in another example, the container body having the bag shape may be provided by folding back one film 110 along a part corresponding to the side seal portion 114 . Further, a part in which the film 110 is folded inward, that is, what is called a gusset, may be provided along a part corresponding to the bottom seal portion 113 or the side seal portion 114 . In this case, the gusset may include the film 110 , or may include another film that is bonded to the film 110 .
  • the container 100 with the zipper tape may also be a stand up pouch that is able to be placed upright by the gusset being provided at a bottom of the container 100 with the zipper tape.
  • the zipper tape 120 is bonded to the first surface 111 A of the film 110 as described above.
  • bonded to the first surface 111 A are: the part, of the base 121 B, that extends beyond the tear strip 123 (the part at which the thick portion 125 B is provided in the illustrated example); the tear strip 123 (a surface of the strip body 123 A opposite to the peeling layer 123 C in the illustrated example); a surface, of the base 121 A opposite to the engagement portion 122 A; and the peeling layer 124 provided on the part, of the base 121 B, that extends beyond the base 121 A on an opposite side to the tear strip 123 .
  • the part, of the base 121 B that extends beyond the tear strip 123 (the part at which the thick portion 125 B is provided in the illustrated example); the tear strip 123 (a surface of the strip body 123 A opposite to the peeling layer 123 C in the illustrated example); a surface, of the base 121 A opposite to the engagement portion 122 A; and the peeling layer 124 provided
  • a gap is provided between: the thin portion that couples the tear strip 123 and the base 121 A to each other; and the first surface 111 A.
  • the thin portion may be configured to be bonded to the first surface 111 A.
  • the base 121 A and the tear strip 123 may be separated from each other.
  • the peeling layer 124 is formed by the resin composition (the second resin composition) having a peeling property with respect to the film 110 having the first surface 111 A.
  • the resin composition the second resin composition
  • Each of the portions of the zipper tape 120 and the first surface 111 A are bonded to each other by, for example, heat sealing or ultrasonic sealing.
  • the peeling layer 124 and the first surface 111 A may be subjected to heat sealing at a low temperature as compared with other portions of the zipper tape 120 .
  • the peeling layer 124 is bonded only to the first surface 111 A in the illustrated example, the peeling layer 124 may also be partially bonded to the base 121 A (the thick portion 126 in the illustrated example).
  • the second resin composition forming the peeling layer 124 includes, for example, low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE).
  • the first resin composition forming the bases 121 A and 121 B may also include LDPE or LLDPE; however, in this case, the blending amount of LDPE or LLDPE differs between the first resin composition and the second resin composition.
  • the peeling layer 124 has a peeling property with respect to the film 110 . Specifically, the peel strength between the peeling layer 124 and the film 110 is less than or equal to 30 N/15 mm.
  • the peel strength in this case is preferably less than or equal to 20 N/15 mm, more preferably less than or equal to 15 N/15 mm, and still more preferably less than or equal to 10 N/15 mm.
  • a lower limit of the peel strength is not particularly limited, and is, for example, greater than or equal to 1 N/15 mm.
  • polypropylene may be mixed with LDPE or LLDPE in the second resin composition.
  • Polypropylene in this case includes Polypropylene Homopolymer (HPP), Polypropylene Random Copolymer (RPP), Polypropylene Block Copolymer (BPP), propylene-ethylene-butene-1 random ternary copolymer, polyolefin special soft resin (TPO resin) mixture.
  • the second resin composition is not limited to the examples described above, and may have another component blended therewith having a peeling property with respect to the film 110 . It is to be noted that the peeling layer 123 C of the tear strip 123 and the peeling layer 124 described above may be formed by the same resin composition or may be formed by respective resin compositions different from each other.
  • FIG. 4 is an enlarged view of a tab portion of the container with the zipper tape illustrated in FIG. 2
  • FIG. 5 is a cross-sectional view taken along a line V-V of FIG. 4
  • (a) represents a state prior to unsealing
  • (b) represents a state upon unsealing.
  • a cut 131 having a tab shape is formed in the first surface 111 A of the film 110 , the tear strip 123 , the base 121 B, and the second surface 111 B of the film 110 .
  • a tab provided by the cut 131 has a planar shape of a pot.
  • the tab is not particularly limited in planar shape, and the planar shape of the cut 131 in another example may be, for example, a C shape, a U shape, or a horseshoe shape. As in the illustrated example, the cut 131 may pass through the base 121 A at a part that is widened relative to the opening of each of those planar shapes. In the illustrated example, the cut 131 is formed in a seal portion 115 in which the side seal portion 114 protrudes toward a center in a width direction of the container body.
  • the first surface 111 A, the tear strip 123 , the base 121 B, and the second surface 111 B are bonded to each other in the seal portion 115 .
  • the seal portion 115 is provided with a cut 132 adjacent to the open portion of the cut 131 in the planar shape.
  • the cut 132 is formed in the second surface 111 B and the base 121 B. The cut 132 does not penetrate through the tear strip 123 .
  • the tear strip 123 cuts through the first surface 111 A while being peeled away from the base 121 B. Accordingly, the pulling of the tear strip 123 makes it possible to smoothly form the opening on the container 100 with the zipper tape. Further, as long as the tear strip 123 and the base 121 B are separable from each other as described above, the cut 132 may be partially formed in the tear strip 123 . Further, although not illustrated in FIG. 5 , when the tear strip 123 includes the strip body 123 A and the peeling layer 123 C, peeling may be performed between the peeling layer 123 C and the base 121 B or between the strip body 123 A and the peeling layer 123 C.
  • FIG. 6 is a diagram illustrating another example of the tab portion of the container with the zipper tape illustrated in FIG. 2
  • FIG. 7 is a cross-sectional view taken along a line VII-VII line of FIG. 6
  • (a) represents a state prior to unsealing
  • (b) represents a state upon unsealing.
  • a cut 133 having a tab shape has a planar shape similar to that of the example of FIG. 4 described above. However, in this example, the cut 133 is formed in the first surface 111 A of the film 110 , the tear strip 123 , and the base 121 B, and does not penetrate through the second surface 111 B of the film 110 .
  • the cut 133 is not formed in the tear strip 123 .
  • the cut 133 is formed in a non-bonded region 117 .
  • the non-bonded region 117 is provided inside a surrounding seal portion 116 that is provided continuously with the side seal portion 114 .
  • the surrounding seal portion 116 is a bonded region in which the first surface 111 A, the tear strip 123 , the base 121 B, and the second surface 111 B are bonded to each other.
  • an entire circumference of the non-bonded region 117 is surrounded by the side seal portion 114 and the surrounding seal portion 116 ; however, in another example, for example, a side portion of the container body having the bag shape is folded back, and a surrounding seal portion may be provided in contact with the folded-back part. In this case, it is not necessary to provide a seal portion in the folded-back part. Thus, the surrounding seal portion does not necessarily surround the entire circumference of a non-bonded region.
  • cut 133 only has to penetrate through at least the first surface 111 A and the tear strip 123 , and needs not penetrate through the base 121 B, for example, due to processing errors. It is to be noted that, for example, when the tear strip 123 is so provided as to be shorter than the base 121 B, the cut 133 is not formed in the tear strip 123 . Further, as long as the second surface 111 B is not pulled along with the tear strip 123 and the base 121 B, the cut 133 may partially penetrate through the second surface 111 B, for example, due to processing errors. Further, it is not necessary to provide the surrounding seal portion 116 to break the base 121 B, and it is only necessary to provide a bonded region that traverses the tear strip 123 .
  • the non-bonded region 117 is not necessarily completely surrounded by the bonded region such as the surrounding seal portion 116 , and may only be at least partially surrounded.
  • a form in which the non-bonded region is partially surrounded also includes a case in which the bonded region is provided only in a part that traverses the tear strip 123 .
  • a side portion of the container body having the bag shape is folded back, and a surrounding seal portion may be provided in contact with the folded-back part. In this case, it is not necessary to provide a seal portion in the folded-back part.
  • the surrounding seal portion does not necessarily surround the entire circumference of a non-bonded region.
  • FIG. 8 is a diagram illustrating a state upon filling the container with the zipper tape illustrated in FIG. 3 with contents.
  • the top seal portion 112 is not yet provided during filling the container with the zipper tape with the contents, which makes it possible to place the contents in the containing space SP without passing through the zipper tape 120 .
  • Forming the top seal portion 112 after the placement of the contents makes it possible to seal the containing space SP in which the contents are placed, in a state where the peeling layer 124 of the base 121 B is bonded to the first surface 111 A of the film 110 , as illustrated in FIG. 3 .
  • the engagement portions 122 A and 122 B of the zipper tape 120 are isolated from the containing space SP owing to the bonding of the peeling layer 124 to the first surface 111 A.
  • the contents may be placed in the containing space SP in a state where the bottom seal portion 113 is not provided, and after the placement of the contents, the bottom seal portion 113 may be formed to seal the containing space SP.
  • FIG. 9 is a diagram illustrating a state upon unsealing of the container with the zipper tape illustrated in FIG. 3 .
  • the pulling of the tear strip 123 from the tab provided by the cut 131 makes it possible to cut through the first surface 111 A of the film 110 and to form an opening 101 on the container 100 with the zipper tape, as described above.
  • a space between the bases 121 A and 121 B is widened from a side of the opening 101 to disengage the engagement portions 122 A and 122 B, and further, the peeling layer 124 provided on the base 121 B is caused to be peeled from the first surface 111 A. This makes it possible to access the containing space SP from an outside.
  • the engagement portions 122 A and 122 B are isolated from the containing space SP. Thus, the contents are prevented from adhering to the engagement portions 122 A and 122 B upon unsealing.
  • the peeling layer 124 provided on the base 121 B is bonded to the first surface 111 A of the film 110 , thereby isolating the engagement portions 122 A and 122 B of the zipper tape 120 from the containing space SP and preventing the contents placed in the containing space SP from adhering to the engagement portions 122 A and 122 B. Further, upon unsealing, pulling of the tear strip 123 makes it possible to easily and linearly cut the first surface 111 A of the film 110 to form the opening 101 .
  • a peeling portion is provided by the peeling layer 124 formed by the second resin composition that is different from the first resin composition forming the bases 121 A and 121 B on a surface, near the base 121 A, of the base 121 B extending beyond the base 121 A on the opposite side to the tear strip 123 .
  • the invention is not limited to such examples.
  • the bases 121 A and 121 B may each be bonded to the first surface 111 A of the film 110 via an unillustrated seal layer.
  • the peeling layer 124 may be formed by a resin composition that is different from a resin composition forming the respective seal layers on a surface of the base 121 A opposite to the engagement portion 122 A and on a surface of the base 121 B at a side of the engagement portion 122 B at the first side in the width direction of the base 121 B.
  • a part at which each of the bases 121 A and 121 B is exposed as it is may be provided instead of the peeling layer 124 , and such a part may be formed by a resin composition that is different from the resin composition forming each of the seal layers, thereby operating as the peeling portion having a peeling property with respect to the film of the container body.
  • the container 100 with the zipper tape described above may be used as a microwave cooking container in which contents such as foods are heated using a microwave oven.
  • the container 100 with the zipper tape is provided with a steaming mechanism configured to cause the containing space SP to communicate with an external space while keeping the engagement portions 122 A and 122 B engaged with each other when an internal pressure of the containing space SP is increased by steam generated from the contents during heating.
  • a steaming mechanism configured to cause the containing space SP to communicate with an external space while keeping the engagement portions 122 A and 122 B engaged with each other when an internal pressure of the containing space SP is increased by steam generated from the contents during heating.
  • Various known configurations are usable as a specific configuration of the steaming mechanism.
  • FIG. 10 is a diagram illustrating a modification of the container with the zipper tape illustrated in FIG. 2 .
  • a seal portion 140 having a wavy shape is provided between the peeling layer 124 provided on the base 121 B of the zipper tape 120 and the first surface 111 A of the film 110 .
  • the seal portion 140 may have, for example, the shape of waves in which sides close to the engagement portions 122 A and 122 B are sharpened and sides on the containing space SP are rounded, as in the illustrated example.
  • the seal portion 140 may also be so provided as to have a narrow width as compared with other seal portions, for example, the top seal portion 112 , the bottom seal portion 113 , and the side seal portion 114 .
  • a shape of a seal portion between the peeling layer 124 and the first surface 111 A is not limited to the example of the seal portion 140 described above, and for example, a straight seal portion may be provided, or a seal portion may be provided on an entire part at which the peeling layer 124 and the first surface 111 A are in contact with each other. Even when the seal portion is provided on the entire part, it is possible to easily peel the peeling layer 124 from the first surface 111 A upon unsealing if the peel strength between the peeling layer 124 and the first surface 111 A is low.
  • 100 container with zipper tape, 101 : opening, 110 : film, 111 A: first surface, 111 B: second surface, 112 : top seal portion, 113 : bottom seal portion, 114 : side seal portion, 115 : seal portion, 116 : surrounding seal portion, 117 : non-bonded region, 120 : zipper tape, 121 A, 121 B: base, 122 A, 122 B: engagement portion, 123 : tear strip, 123 A: strip body, 123 B: bonding layer, 123 C: peeling layer, 124 : peeling layer, 125 A, 125 B, 126 : thick portion, 131 , 132 , 133 : cut, 140 : seal portion, SP: containing space.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)
US18/707,474 2021-11-05 2022-10-28 Zipper tape and container equipped with zipper tape Pending US20250002222A1 (en)

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JP2021181347 2021-11-05
JP2021-181347 2021-11-05
PCT/JP2022/040431 WO2023080078A1 (ja) 2021-11-05 2022-10-28 ジッパーテープおよびジッパーテープ付き容器

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JP (1) JPWO2023080078A1 (https=)
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Publication number Priority date Publication date Assignee Title
JP2025135813A (ja) * 2024-03-06 2025-09-19 出光ユニテック株式会社 ジッパーテープ、ジッパーテープ付きフィルム、ジッパーテープ付き容器およびジッパーテープ付き容器の製造方法
JP2025150294A (ja) * 2024-03-27 2025-10-09 出光ユニテック株式会社 ジッパーテープ付き容器およびジッパーテープ

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5782733A (en) * 1992-10-26 1998-07-21 Innoflex Incorporated Zippered film and bag
US20040131283A1 (en) * 2002-12-03 2004-07-08 Sprague Paul A. Autoclavable reclosable package
US20090022435A1 (en) * 2006-01-27 2009-01-22 Kenichi Tanaka Zipper tape, packing bag with zipper tape and apparatus for producing packing bag with zipper tape
US20090050254A1 (en) * 2005-04-18 2009-02-26 Shuichi Goto Device and method for manufacturing bag with chuck tape
US20100236026A1 (en) * 2006-08-21 2010-09-23 Idemitusu Unitech Co., Ltd. Chuck tape with cut tape, its manufacturing method, and packaging bag with chuck tape
JP2014069888A (ja) * 2012-10-01 2014-04-21 Dainippon Printing Co Ltd レトルトパウチおよびレトルトパウチの製造方法
WO2016114303A1 (ja) * 2015-01-14 2016-07-21 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袋体
JP2019051963A (ja) * 2017-09-14 2019-04-04 出光ユニテック株式会社 袋体、袋体の製造方法および製造装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139086U (ja) 1984-08-11 1986-03-12 アイシン精機株式会社 刺しゆうミシンの自動ヒ−トカツタ−装置
JP2006111277A (ja) * 2004-10-12 2006-04-27 Idemitsu Unitech Co Ltd チャックテープ付き包装袋
JP4908228B2 (ja) * 2004-12-07 2012-04-04 出光ユニテック株式会社 チャック及びチャック付き袋
KR102720281B1 (ko) * 2016-01-07 2024-10-21 이데미쓰 유니테크 가부시키가이샤 지퍼 테이프, 주머니체 및 주머니체의 제조 방법
JP6773877B1 (ja) * 2019-12-11 2020-10-21 出光ユニテック株式会社 ジッパー付き容器およびジッパー付き容器の製造方法
WO2021149807A1 (ja) * 2020-01-24 2021-07-29 出光ユニテック株式会社 ジッパーテープ、ジッパーテープ付き袋およびジッパーテープ付き袋の製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5782733A (en) * 1992-10-26 1998-07-21 Innoflex Incorporated Zippered film and bag
US20040131283A1 (en) * 2002-12-03 2004-07-08 Sprague Paul A. Autoclavable reclosable package
US20090050254A1 (en) * 2005-04-18 2009-02-26 Shuichi Goto Device and method for manufacturing bag with chuck tape
US20090022435A1 (en) * 2006-01-27 2009-01-22 Kenichi Tanaka Zipper tape, packing bag with zipper tape and apparatus for producing packing bag with zipper tape
US20100236026A1 (en) * 2006-08-21 2010-09-23 Idemitusu Unitech Co., Ltd. Chuck tape with cut tape, its manufacturing method, and packaging bag with chuck tape
JP2014069888A (ja) * 2012-10-01 2014-04-21 Dainippon Printing Co Ltd レトルトパウチおよびレトルトパウチの製造方法
WO2016114303A1 (ja) * 2015-01-14 2016-07-21 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袋体
JP2019051963A (ja) * 2017-09-14 2019-04-04 出光ユニテック株式会社 袋体、袋体の製造方法および製造装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Machine translation of JP-2014069888-A. (Year: 2014) *
Machine translation of JP-2019051963-A. (Year: 2019) *
Machine translation of WO-2016114303-A1. (Year: 2016) *

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CN118215419A (zh) 2024-06-18

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