| IDEMITSU UNITECH CO., LTD Patent applications |
| Patent application number | Title | Published |
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| 20120085479 | MANUFACTURING METHOD FOR PACKAGING BAG WITH ZIPPER TAPE AND MANUFACTURING APPARATUS THEREFOR - A zipper tape member having a male engagement portion and a female engagement portion formed on a surface of an elongated belt-like tape is pulled out, and is punched and removed at a portion corresponding to the male engagement portion and a portion corresponding to the female engagement portion at predetermined intervals. The zipper tape member is cut between the male engagement portion and the female engagement portion by a cutting member to be separated into a male belt-like member and a female belt-like member. The male belt-like member and the female belt-like member are heat-sealed to a base film, and a packaging bag is formed by a bag-manufacturing device. This arrangement is unlikely to cause a length difference or a tension difference between the male belt-like member and the female belt-like member, so that the zipper tape can be heat-sealed without any crease or adhesion failure. | 04-12-2012 |
| 20120033899 | ZIPPER TAPE AND ZIPPER-TAPE-EQUIPPED BAG - A zipper tape includes a male member and a female member that bite each other. The male member has a head, a projection at the tip of the head, and a recess located at a connecting portion between the projection and the tip of the head. The female member has first and second claw members facing each other, a valley between the first and second claw members, and a pair of protrusions located at the top of the valley. When the male member and the female member bite each other, at least a part of the inner surface of the first claw member of the female member and at least a part of the inner surface of the second claw member of the female member come into surface contact with at least a part of the surface of the head of the male member. The valley of the female member receives the projection of the male member, and the protrusions of the female member fit into the recesses of the male member. | 02-09-2012 |
| 20120020590 | EASILY TEARABLE ZIPPER TAPE AND PACKAGING BAG WITH EASILY TEARABLE ZIPPER TAPE - 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. | 01-26-2012 |
| 20110236676 | SURFACE PROTECTIVE FILM - A surface protective film includes: a polyolefin base material layer; and an adhesion layer, in which the adhesion layer includes: a vinyl-polyisoprene-block-containing styrene elastomer; a polyolefin; and a tackifier, and a hardness (Martens hardness) of the adhesion layer is 1.0 N/mm | 09-29-2011 |
| 20110150370 | ZIPPER TAPE AND PACKAGING BAG WITH ZIPPER TAPE - A seal base, which is thicker than a thick portion and is bondable to an inner surface of a bag body, is continuously connected to one of belt-like bases of a zipper tape via a belt-like cutting portion that is thinner than the thick portion and separates a containing space from an outside. A first linking portion having a first corner (a) is defined by a cutting outer surface of the cutting portion and a seal outer continuous surface of the seal base. A second linking portion having a second corner (b) is defined by a contained cutting surface of the cutting portion and a contained seal continuous surface of the seal base. | 06-23-2011 |
| 20110089228 | CONTINUOUS WORKING DEVICE - A continuous machining device includes: a film machining mechanism that forms a hole in a film; a holding mechanisms being provided integrally with the film machining mechanism; a slider that supports the film machining mechanism and the holding mechanism in a reciprocative manner relative to a feeding direction of the film; and a return mechanism that returns the film machining mechanism and the holding mechanism to their respective original positions defined on the opposite sides to the feeding direction of the film. When the film is held by the holding mechanism, the film machining mechanism can be moved in synchronization with the film. Thus, after the hole is formed in the film by the film machining mechanism, the film machining mechanism and the holding mechanism can be returned to their respective original positions by the return mechanism as soon as the film is released from the holding mechanism. | 04-21-2011 |
| 20110014408 | POLYPROPYLENE MOLDED ARTICLE, SHEET-LIKE POLYPROPYLENE MOLDED ARTICLE, AND METHOD FOR PRODUCTION OF POLYPROPYLENE THERMALLY MOLDED ARTICLE - A molten polypropylene having tacticity expressed in terms of an isotactic pentad fraction of 95 mol % or more is flowed. The molten-polypropylene is cooled to a temperature range of −200 degrees C. to 50 degrees C. and maintained at the above temperature for 0.1 second to 100 seconds, thereby providing a rapidly-cooled polypropylene higher order structure of which main constituents are a mesophase or monoclinic crystal domain having a size of 100 nm or less and an amorphous phase. The rapidly-cooled polypropylene higher order structure is heated to a temperature range in which endothermic transition occurs and that is equal to or lower than a melting temperature of polypropylene to be heat-treated. | 01-20-2011 |
| 20100266224 | CUTTING TAPE AND PACKAGING BAG WITH CUTTING 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. | 10-21-2010 |
| 20100249340 | BIAXIALLY ORIENTED NYLON FILM, LAMINATE WRAPPING MATERIAL AND PROCESS FOR PRODUCTION OF BIAXIALLY ORIENTED NYLON FILM - Biaxially-oriented nylon film according to the present invention is biaxially-oriented nylon film made from nylon. In the biaxially-oriented nylon film, an elongation ratio of the film in each of four directions (an MD direction, a TD direction, a 45 degree direction and a 135 degree direction) until a film rupture is 70 percent or more, the elongation ratio being measured in a tensile test (testing conditions: a sample width is 15 mm; a distance between gauge points is 50 mm; and a tensile speed is 100 mm/min), and a stress ratio A (σ | 09-30-2010 |
| 20100220940 | INTERLOCKING DEVICE AND PACKAGING BAG WITH INTERLOCKING DEVICE - A packaging bag has a zipper including a pair of male member and a female member that are engageable with each other. The male member includes: a belt-shaped male base element provided on a packaging bag body; and a male engaging portion projecting from the belt-shaped male base element. The female member includes: a belt-shaped female base element located at a position opposed to the belt-shaped male base element; and a female engaging portion projecting from the belt-shaped female base element, the male engaging portion and the female engaging portion being disengageably engaged to form an engaging portion. The belt-shaped male base element and the belt-shaped female base element are made of a resin of which tensile modulus of elasticity is in a range of 700 MPa to 1600 MPa. The engaging portion is made of a resin of which tensile modulus of elasticity is in a range of 110 MPa to 560 MPa. | 09-02-2010 |
| 20100215291 | Easily Openable Fastener Tape, Packaging Bag With Easily Openable Fastener Tape, And Method Of Manufacturing Easily Openable Fastener Tape - 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. | 08-26-2010 |
| 20100210439 | DEVICE FOR CUTTING PACKING BAG, DEVICE FOR PRODUCING PACKING BAG AND METHOD FOR PRODUCING PACKING BAG - A cutter includes a male blade, a female blade, an advancement and retraction controller and a suction device. The male blade includes: a linear cutting portion linearly shaped with a predetermined thickness in a center part; a rounded cutting portion where a radius having a substantially arc shape in planar view is continuously formed from the linear cutting portion; and an end provided adjacent to the rounded cutting portion. The female blade has a fitting portion that is a hole conforming to the profile of the male blade in planar view and to which the male blade is fitted. On a lateral side of the female blade, an elongated hole for inserting a base film from one lateral side to the other lateral side is formed as an insertion portion. | 08-19-2010 |
| 20100189999 | SURFACE PROTECTIVE FILM - A surface protective film includes a base material layer and an adhesive layer. The adhesive layer contains a styrene elastomer, a polyolefin and a tackifier. The styrene elastomer includes a hydrogenated or non-hydrogenated vinyl-polyisoprene block. The styrene elastomer contains 5% or more and 30% or less of styrene and 80% or more of triblock copolymer, and glass transition temperature of the styrene elastomer is −40 degrees C. or more and 20 degrees C. or less. | 07-29-2010 |
