Patents Assigned to Oji Yuka Goseishi Kabushiki Kaisha
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Patent number: 4472227Abstract: A process for producing an oriented composite polyolefin resin film which comprises melt-laminating a polyolefin resin sheet for a paper-like layer on at least one surface of a monoaxially stretched polyolefin resin sheet for a substrate layer, and then stretching the resulting laminated sheet in a direction perpendicular to said monoaxially stretched direction. The polyolefin resin sheet for the substrate layer is a sheet of composite structure prepared by melt-extruding the specific compositions (A), (B), and (C) through a co-extrusion die in such a manner that a layer composed of the thermoplastic resin composition (A) is laminated on one surface of an intermediate layer composed of the polyolefin composition (B) containing a filler and a layer composed of the thermoplastic resin composition (C) is laminated on the other surface of the intermediate layer. Said polyolefin resin sheet for the paper-like layer is composed of a specific polyolefin composition (D) containing a filler.Type: GrantFiled: May 4, 1982Date of Patent: September 18, 1984Assignee: Oji Yuka Goseishi Kabushiki KaishaInventors: Takashi Toyoda, Yozo Ohba, Kanji Shirai, Akira Takagi, Masaaki Yamanaka
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Patent number: 4420530Abstract: A water-soluble coating composition adapted for imparting appropriate printing, especially off-set printing, and processing characteristics to a thermoplastic resin film to be used as a synthetic paper and a coated film prepared with the composition are provided. The coating composition comprises (A) 100 parts by weight of a water-soluble polymer containing tertiary or quaternary nitrogen, (B) 5 to 75 parts by weight of a water-soluble polyaminepolyamideepichlorohydrin adduct, and (C) 5 to 100 parts by weight of a water-soluble polyimine compound.Type: GrantFiled: March 8, 1982Date of Patent: December 13, 1983Assignee: Oji Yuka Goseishi Kabushiki KaishaInventors: Takashi Toyoda, Yozo Ohba, Masaaki Yamanaka, Kanji Shirai
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Patent number: 4418112Abstract: A composite film comprising a first layer comprising a polyolefin resin containing finely divided calcium carbonate dispersed therein and a surface layer comprising a polyolefin resin containing an acidic filler dispersed therein, which surface layer is bonded directly or indirectly to at least one surface of the first layer and has a thickness of at least 3 microns. A diazo copying paper is also disclosed which has a photosensitive diazo layer on the surface layer of the composite film.Type: GrantFiled: September 9, 1981Date of Patent: November 29, 1983Assignee: Oji Yuka Goseishi Kabushiki KaishaInventors: Takashi Toyoda, Yozo Ohba, Masaaki Yamanaka
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Patent number: 4341880Abstract: A resin composition of improved hue which comprises, in specified proportions, an olefin-based resin such as polypropylene and at least three specified antioxidants which are (1) 2,6-di-t-butyl paracresol, (2) tri(mono- and/or di-nonylphenyl)phosphite and/or distearyl pentaerythritol diphosphite, and (3) tris(3,5-di-t-butyl-4-hydroxybenzyl)isocyanurate and/or octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)-propionate.Type: GrantFiled: February 20, 1981Date of Patent: July 27, 1982Assignee: Oji Yuka Goseishi Kabushiki KaishaInventors: Takashi Toyoda, Yozo Ohba, Masaaki Yamanaka
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Patent number: 4097645Abstract: A synthetic paper having good ink adhesion thereto which comprises:A. a synthetic paper substrate comprising a papery layer which is a stretched resin film which contains fine filler particles dispersed therein and has microvoids dispersed therein and surface ruptures thereon; andB. a layer for improving ink adhesion to the synthetic paper which is provided on at least one surface of the papery layer and comprises, as an essential constituent, an ethyleneimine adduct of a polyaminepolyamide.Type: GrantFiled: October 21, 1977Date of Patent: June 27, 1978Assignee: Oji Yuka Goseishi Kabushiki KaishaInventors: Takashi Toyoda, Yoshio Miyabe, Masaaki Yamanaka
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Patent number: 4086317Abstract: In a process for production of a synthetic paper comprising a paper-like layer which comprises stretching in at least one direction a sheet comprising a layer of film of a resin loaded with a fine filler so as to whiten said film thereby to obtain a synthetic paper comprising the whitened film as the paper-like layer, the improvement for production of such a synthetic paper improved in dusting trouble, which improvement comprises coating said film to form said paper-like layer upon stretching with an aqueous binder material which can be dry-extensible, drying the binder material, and effecting the step of said stretching.Type: GrantFiled: January 6, 1976Date of Patent: April 25, 1978Assignee: Oji Yuka Goseishi Kabushiki KaishaInventor: Yoshio Miyabe
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Patent number: 3948709Abstract: As a laminated film formed by continuously melt extruding an .alpha.-olefin polymer as a covering film on a traveling, continuous substrate film of an .alpha.-olefin polymer is being cooled by means of a cooling roll contacting the covering film side, pressing rolls are pressed against the laminated film on the substrate film side, along the lateral edge parts thereof, and toward the cooling roll thereby to cause local plastic deformation and thinning of the cover film, which has not fully solidified, due to elastic deflection without appreciably thinning the substrate film, and then the pressing rolls are retracted away from the laminated film, whereby thin-film regions for ensuring positive gripping by tentering clips for lateral stretching are formed along the lateral edge parts.Type: GrantFiled: August 27, 1973Date of Patent: April 6, 1976Assignee: Oji Yuka Goseishi Kabushiki KaishaInventors: Saburo Ida, Kuniharu Tobita