Idemitsu Unitech Co., Ltd.

Yoshinori Nanba

Kenichi Tanaka

Shuichi Goto

Ryo Katada

A tearing guide stripis integrated with a base partorof at least one of a male memberand a female memberconstituting a zipperin a peelable manner to improve the tearing unsealing ability of a zipper-equipped bag provided with an interlocking type zipper enabling resealing and unsealing after the bag is unsealed.

Zipper and zipper-equipped bag

A belt-shaped base of a male member of a zipper tape attached on an inner surface of a bag body includes a main body provided with an engagement portion, a thin portion connected to an opening-side of the main body, a thick portion connected to an opening-side of the thin portion and a projecting portion provided on the thick portion. A female member is also provided with the same arrangement. When the zipper tape is fused with the bag body, a gap is provided between the thin portion and a film of the bag body and between the thin portion and a film of the bag body, so that the thin portions are easily bent.

Easily openable fastener tape, packaging bag with easily openable fastener tape, and method of manufacturing easily openable fastener tape

A cutting tape includes a leading portion, a first base, a second base and a seal layer. The leading portion is welded on a sealant layer with the seal layer interposed therebetween. The first base and the second base, which are laminated on the leading portion, respectively include thin laminated portions and body portions to be welded on the sealant layer. The laminated portions are welded on the leading portion. The body portions respectively have a substantially trapezoidal cross section projecting toward the sealant layer and having an inclined surface adjacent to the leading portion.

Cutting tape and packaging bag with cutting tape

A belt-shaped 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 on an opening-side of the main body; a thin portion connected to an opening-side of the first projecting portion; and a second projecting portion connected to an opening-side of the thin portion. A belt-shaped base of a female member includes: a main body; a first projecting portion; a thin portion; and a second projecting portion. When the zipper tape is fused onto the bag body, a space is provided between the thin portions and a film of the bag body.

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

A belt-shaped base of a female member of a zipper tape attached to an inner surface of a bag body has a wide portion that extends wider toward an opening of the bag body than a belt-shaped base of the male member. An open tape is disposed on the wide portion and a seal layer is laminated on a surface of the open tape. A first projecting portion is also provided on the wide portion. A second projecting portion is provided on an opening-side end of the belt-shaped base. The projecting portions have a substantially trapezoidal cross section. When the zipper tape is bonded to the bag body and is sealed by the seal layer, a gap is provided between the open tape and the first and the second projecting portions.

Chuck tape with cut tape, its manufacturing method, and packaging bag with chuck tape

Disclosed are a reclosable tape that can be manufactured easily and stably, exhibit excellent adhesion strength regardless of a material type of a sealant layer (innermost layer) of a base material film of a bag body and good formability of an engaging portion in manufacturing; and a packaging bag with the reclosable tape. The reclosable tapeincludes a male memberand a female memberand the packaging bag with the reclosable tape are so arranged that: a belt-shaped baseof the reclosable tapeincludes a seal portionand a base portion; a resin forming the base portionhas a melting point higher than that of a resin forming the seal portion; and the resin forming the seal portioncontains 50 mass % or more of a metallocene-type linear-low-density polyethylene having density of 920 kg/mor lower, melt flow rate of 5.0 g/l 10 min or lower.

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Sodegaura, Japan

Yoshinori Nanba