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公开(公告)号：JPH03130151A
公开(公告)日：1991-06-03
申请号：JP26955189
申请日：1989-10-16
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , YAMAUCHI HIDEYUKI , TSUNASHIMA KENJI
Abstract: PURPOSE:To improve moisture resistance and adhesion at the time of the coating of a coating agent, etc., by bringing the rate of change of surface roughness (Ra) before and after dipping in a solvent in at least one surface to 10-300%. CONSTITUTION:The rate of change of surface roughness (Ra) before and after dipping in a solvent in at least one surface is made 10-300%. Adhesion and moisture resistance are deteriorated when the rate of change of the surface roughness is too low, and adhesion is lowered, gloss at the time of printing is reduced and appearance is often damaged when the rate of the change is too high. Alcohols such as methyl alcohol, ethyl alcohol, etc., ketones such as acetone, methyl ethyl ketone, etc., halogens such as trichloroethane, fluorocarbon etc,, petroleums, aromatic groups such as benzene, toluene, etc., esters such as ethyl acetate, etc., are exampled as a solvent. Accordingly, a polyester film, which has excellent adhesive properties with printing ink or a coating agent and adhesion of which is not lowered even under high humidity particularly, is acquired.
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公开(公告)号：JPH02311539A
公开(公告)日：1990-12-27
申请号：JP13298389
申请日：1989-05-26
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , TANAKA SHIGERU , TAKEUCHI MASANORI
Abstract: PURPOSE:To provide a porous polypropylene film having a high optical density and excellent shielding property, printability, etc., by mixing a crystalline polypropylene containing a beta-crystal nucleator with an incompatible thermoplastic resin of specified properties in a specified mixing ratio, melt-molding the mixture and orienting the obtained film. CONSTITUTION:50 to 85wt.% crystalline polypropylene containing a beta-crystal nucleator (e.g. gamma-quinacridone) is mixed with 50 to 15wt.% thermoplastic resin being incompatible with polypropylene and having a melting crystallization temperature >=140 deg.C and a weight-average mol.wt. to number-average mol.wt. ratio and an optical density >=0.3 is obtained. This film can be desirably used as various printing papers, labels, etc.
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公开(公告)号：JPH02302442A
公开(公告)日：1990-12-14
申请号：JP12508289
申请日：1989-05-17
Applicant: TORAY INDUSTRIES
Inventor： YOSHII RYOJI , TAKEUCHI MASANORI , ITO TATSUYA
Abstract: PURPOSE:To provide the subject film not causing the transfer of an antibacterial agent to foods, safe on hygiene, having excellent antibacterial activity, mechanical characteristics and transparency and suitable for packaging foods by containing in a dispersed state a swellable lamellar silicate salt whose interlaminar ions are exchanged with specific metal ions. CONSTITUTION:The objective film contains in a dispersing state a lamellar silicate salt, preferably 0.01 to 20wt.% (based on the total weight of the film free from moisture) of a solid powdery particle-like lamellar silicate salt having a diameter of
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公开(公告)号：JPH01318049A
公开(公告)日：1989-12-22
申请号：JP14861788
申请日：1988-06-16
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , TANAKA SHIGERU , NAGATA TAEKO
IPC: B29C55/02 , B29K23/00 , B29K105/04 , B29L7/00 , C08J9/00 , C08J9/26 , H01G9/02 , H01G11/00 , H01G11/52 , H01M2/16
Abstract: PURPOSE:To prepare a microporous polyolefin film with a surface profile which enables a sufficiently uniform contact between an electrode and a separator, by specifying the surface pore diameter, porosity, breaking strength and average surface roughness of the film. CONSTITUTION:A microporous polyolefin film having a surface-pore diameter of 0.05-1mum and a porosity of 30-90%, wherein the ratio (Sm/St) of the max. breaking strength (Sm) to the breaking strength (St) in the direction vertical to that of the max. breaking strength is 1.5-6, and an average surface roughness (Ra) of at least one side is 0.2mum or less. Preferable polyolefins are high-density polyethylene and polypropylene because of their excellent solvent resistance and mechanical properties. A preferable pore structure of the microporous film is one in which pores with an elliptic appearance are distributed randomly in the section parallel to the direction of the max. breaking strength.
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公开(公告)号：JPH01152140A
公开(公告)日：1989-06-14
申请号：JP32643987
申请日：1987-12-23
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , TANAKA SHIGERU , YABE KENJI
Abstract: PURPOSE:To make a film endure collapse even when an anode with a roughened surface is pushed against it when it is used as an electrolyte separator of, e.g., an electrolytic capacitor and to prevent an increase in a short circuit ratio or in an equivalent series resistance, by optimizing the mean pore diameter, porosity and Young's modulus of compression of a polyolefin film. CONSTITUTION:This microporous polyolefin film has a mean pore diameter of 0.05-5mum, a porosity of 50-85% and a Young's modulus of compression of 0.2kg/mm or above. As said polyolefin, polypropylene of an isotactic index of 93% or above and an intrinsic viscosity of 1.2-3.3dl/g is desirable. A polypropylene having a melt crystallization temperature of 106 deg.C or above is particularly desirable among such polypropylenes.
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Patent Agency Ranking
公开(公告)号：JPH01103634A
公开(公告)日：1989-04-20
申请号：JP111088
申请日：1988-01-06
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , TSUCHIYA KATSUHIRO , YABE KENJI
Abstract: PURPOSE:To obtain the title film intercepting the passage of fine conductive substances and whose ESR change and thermal shrinkage with time are small, by melt-extruding polypropylene powder and a specified org. solid at room temp. and extracting said solid with an org. solvent. CONSTITUTION:The title film consisting of a polypropylene resin whose intrinsic viscosity is 2.66-3.30dl/g, isotactic index is 93% or more and melt crystallization temp. is 106 deg.C or higher and whose void content is 50-85%, average void diameter is 0.05-0.5mum, thermal shrinkage at 120 deg.C is less than 9%, velocity of liq. paraffin penetration is 10mum/sec or higher, micropore shape is planar or ellipsoidal, ratio of the major axis to the minor axis of the fine void is 1.2-6, major axis is parallel with the longitudinal direction of the film, breaking strength is 1.5kg/15mm or larger, breaking elongation is 200% or less and thickness is less than 50mum is obtd. by melt extruding 100pts.vol. polypropylene powder (A) and 80-180pts.vol. org. solid at room temp. whose m.p. is 35-100 deg.C, MW is 200-1,000 and having polarity and a polar group (e.g. dicyclohexyl phthalate) (B), extracting the component B with an org. solvent and furthermore, if necessary, drawing it monoaxially.
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公开(公告)号：JPS62240548A
公开(公告)日：1987-10-21
申请号：JP8434186
申请日：1986-04-14
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , SATO JUNYA , YABE KENJI
IPC: B32B27/32
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公开(公告)号：JPS62198111A
公开(公告)日：1987-09-01
申请号：JP3944286
申请日：1986-02-25
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , WATANABE SHINICHI , TSUCHIYA KATSUHIRO , YABE KENJI
IPC: H01G4/015 , B32B15/08 , B32B15/085 , H01G4/18
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公开(公告)号：JPS61176013A
公开(公告)日：1986-08-07
申请号：JP1439785
申请日：1985-01-30
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , TSUNASHIMA KENJI , WATANABE SHINICHI
IPC: H01B17/60
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公开(公告)号：JP2541262B2
公开(公告)日：1996-10-09
申请号：JP55888
申请日：1988-01-05
Applicant: TORAY INDUSTRIES
Inventor： ITO TATSUYA , TSUCHA KATSUHIRO , YABE KENJI
Abstract: PURPOSE:To obtain the title microporous film excellent in interconnection of micropores and uniformity, by melt-extruding a polyolefin with an extractable normally solid organic substance, extracting said substance with an organic solvent and optionally stretching the molding. CONSTITUTION:100pts.vol. polyolefin resin (A) of an m.p. >=130 deg.C and a glass transition temperature =93%, a melting crystallization temperature >=106 deg.C and a weight-average MW/number-average MW 9% and a permeation time of fluid paraffin
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