Abstract: A method of manufacturing a molded article, which comprises: (a) a step of manufacturing the molded article by use of a laminate that has a first layer comprising polypropylene, and a second layer comprising one or more selected from the group consisting of polyethylene, polyamide, an ethylene-vinyl alcohol copolymer, and an ethylene-vinyl acetate copolymer.

Abstract: A zipper tape includes a pair of belt-shaped bases bondable to a film of a bag body, and mutually engageable engagement portion each integrally provided to corresponding one of the belt-shaped bases. One of the belt-shaped bases includes at least two portions having different bonding strengths to the film on a side opposite a side provided with the engagement portion and between an edge of the one of the belt-shaped bases in a width direction orthogonal to a longitudinal direction to a point at which the engagement portions are provided. A bonding strength of a first portion of the at least two portions to the film may be larger than a bonding strength of a second portion to the film.

Abstract: A bag 1 with a reclosable tape includes a reclosable tape 20 having a male fastener part 21 and a female fastener part 22 attached to one inner surface of a bag body 10, a cut tape 23 provided between mounting base parts 212 and 222 of those fastener parts, and an easily unsealable structure 50 formed on the mounting base part 212 adjacent to the cut tape 23 in an unsealing start part 30 of a side seal part 60 of the bag body. The easily unsealable structure 50 may be formed by: forming a hole portion 50a or a portion formed by a weak line on the mounting base part 212, arranging a thickness of the mounting base part 212 in the unsealing start part 30 so as to be thinner than other portions, or forming a non-adhesive part between the mounting base part 212 and the cut tape 23.

Abstract: A zipper-tape bag includes a bag body and tabs each provided to an outside of the bag body at a position closer to a housing space than a zipper tape. The bag body can be easily unsealed upon disengagement of a male portion and a female portion simply by pinching and pulling the tabs in mutually separating directions. The tabs are spaced away from an opening, which is formed after a top seal is cut off, in order that the content can be taken out or put in. The content can thus be put in and taken out without problems such as adhesion of the content to the hand and contamination of the content by touching the content by hand.

Abstract: A male belt-shaped base having a male member with a short width, and a separation strip are heat-sealed to a film. A female belt-shaped base having a female member with a long width is heat-sealed at a predetermined position so that the male portion and the female portion are at engageable positions. The film is layered and suitably sealed to form a zipper-tape bag. The film and the separation strip are cut to form a cut portion at a non-bonded region in which the film of the zipper-tape bag is not bonded, thereby forming an unsealing tab. The unsealing tab can be easily formed by simply cutting the film.

Abstract: A resin sheet is manufactured by: forming a rapidly-cooled transparent polypropylene sheet by rapidly cooling a molten polypropylene resin; laminating on the rapidly-cooled transparent polypropylene sheet a resin layer of polyurethane resin, the polyurethane resin having a tensile-rupture elongation in a range from 150% to 900% and a softening point in a range from 50 degrees C. to 180 degrees C.; and laminating a print layer on the resin layer. A molded article having a non-planar molding made of the resin sheet is provided by insert molding. The molding is formed into a complicated shape where a part of the molding has: 150% or more of an elongation ratio; 0.8 or less of a film-thickness ratio (B/A) before and after the sheet is molded; and/or a surface area ratio (Y/X) before and after the sheet is molded in a range from 1.5 to 5.

Abstract: A light-absorbing layer and a bonding layer are layered on a first side of each of a belt-shaped male base portion integrated with a male portion and a female base portion integrated with a female portion on a side of the male and female base portions opposite the first side. The light-absorbing layer contains a light-absorbing material having a wavelength absorption range from 800 nm to 1200 nm to absorb a laser beam of the range. The bonding layer contains a low-melting-point resin in a form of a metallocene linear low-density polyethylene having a melting point ranging from 60 degrees C. to 120 degrees C. When the zipper tape is bonded to the base film, the laser beam is applied to heat the light-absorbing layer to melt the bonding layer. The melted bonding layer is pressure-bonded to the base film. The base film can be bonded without causing thermal degradation.

Abstract: A zipper tape includes a male belt-shaped base including a male base layer continuous with a male portion, and a female belt-shaped base including a female base layer continuous with a female portion. The male base layer and the female base layer are made of linear low-density polyethylene. A base film includes a sealant layer made of a resin containing polypropylene at 50 mass % or more with respect to the other resin component. A male seal layer and a female seal layer, which are bonded to the sealant layer, are made of a resin containing polyethylene at 50 mass % or more with respect to the other resin.

Abstract: A bag 1 with a reclosable tape includes a reclosable tape 20 having a male fastener part 21 and a female fastener part 22 attached to one inner surface of a bag body 10, a cut tape 23 provided between mounting base parts 212 and 222 of those fastener parts, and an easily unsealable structure 50 formed on the mounting base part 212 adjacent to the cut tape 23 in an unsealing start part 30 of a side seal part 60 of the bag body. The easily unsealable structure 50 may be formed by: forming a hole portion 50a or a portion formed by a weak line on the mounting base part 212, arranging a thickness of the mounting base part 212 in the unsealing start part 30 so as to be thinner than other portions, or forming a non-adhesive part between the mounting base part 212 and the cut tape 23.

Abstract: A female belt-shaped base is attached to a bag body at a region from a female hook to a first end near an open end of the bag body and to a second end near a housing space. A male belt-shaped base is attached to the bag body only in a bonding region without being attached at a region from a position where an engagement portion is continuously attached to a first end near the open end of the bag body.

Abstract: A tearing guide strip 23 is integrated with a base part 21a or 21b of at least one of a male member 2a and a female member 2b constituting a zipper 2 in 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.

Abstract: A tearing guide strip 23 is integrated with a base part 21a or 21b of at least one of a male member 2a and a female member 2b constituting a zipper 2 in 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.

Abstract: In manufacturing an easy-open container (1), a flange (25) of a container body (2) and a lid (3) are heat-sealed, where a circular sealing board (7) having a curved surface on an inner circumferential edge and an inclined surface on an outer circumferential edge side is pressed onto an upper side of the flange (25) to form a swelling gathered resin part (6) formed of respective resin components of a surface layer (21) of the container body (2), a subsurface layer (22) adjacent to the surface layer (21) and a seal layer (31) of the lid (3), while heat-sealing the surface layer (21) of the container body (2) and the seal layer (31) of the lid (3). With the arrangement, the easy-open container (1) having both a high sealing performance and an easy-open performance can be provided with low cost.

Abstract: A bag body includes a bag main body and a zipper tape heat-sealed to an inner surface of the bag main body. The zipper tape comprises a pair of belt-shaped bases and two pairs of mating portions configured to be mated with each other. One of the belt-shaped bases is attached to the bag main body only at a widthwise side near an opening. First one of the mating portions includes a pair of hooks provided to each of the belt-shaped bases and respectively having nails at ends of the hooks that are configured to be meshed with each other. The second mating portion includes a concave female mating portion provided to the belt-shaped base and a male mating portion having the same shape as the hook and configured to disengageably mate with the female mating portion. The nail of the hook protrudes toward the opening.

Abstract: A thin portion is provided near an opening of a bag body to a main body of a belt-like base connected to an engagement portion. The thin portion is provided between a thick first projecting portion and a thick second projecting portion. The thin portion is thinner than the first projecting portion and the second projecting portion. On the thin portion, ribs are provided in plural lines.

Abstract: A resin sheet is manufactured by: forming a rapidly-cooled transparent polypropylene sheet by rapidly cooling a molten polypropylene resin; laminating on the rapidly-cooled transparent polypropylene sheet a resin layer of polyurethane resin, the polyurethane resin having a tensile-rupture elongation in a range from 150% to 900% and a softening point in a range from 50 degrees C. to 180 degrees C.; and laminating a print layer on the resin layer. A molded article having a non-planar molding made of the resin sheet is provided by insert molding. The molding is formed into a complicated shape where a part of the molding has: 150% or more of an elongation ratio; 0.8 or less of a film-thickness ratio (B/A) before and after the sheet is molded; and/or a surface area ratio (Y/X) before and after the sheet is molded in a range from 1.5 to 5.

Abstract: A tearing guide strip 23 is integrated with a base part 21a or 21b of at least one of a male member 2a and a female member 2b constituting a zipper 2 in 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.

Abstract: A tearing guide strip 23 is integrated with a base part 21a or 21b of at least one of a male member 2a and a female member 2b constituting a zipper 2 in 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.

Abstract: A tearing guide strip 23 is integrated with a base part 21a or 21b of at least one of a male member 2a and a female member 2b constituting a zipper 2 in 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.

Abstract: A bag 1 with a reclosable tape includes a reclosable tape 20 having a male fastener part 21 and a female fastener part 22 attached to one inner surface of a bag body 10, a cut tape 23 provided between mounting base parts 212 and 222 of those fastener parts, and an easily unsealable structure 50 formed on the mounting base part 212 adjacent to the cut tape 23 in an unsealing start part 30 of a side seal part 60 of the bag body. The easily unsealable structure 50 may be formed by: forming a hole portion 50a or a portion formed by a weak line on the mounting base part 212, arranging a thickness of the mounting base part 212 in the unsealing start part 30 so as to be thinner than other portions, or forming a non-adhesive part between the mounting base part 212 and the cut tape 23.