公开(公告)号：CA2057541A1

公开(公告)日：1992-06-14

申请号：CA2057541

申请日：1991-12-12

Applicant: TORAY INDUSTRIES

Inventor： ITO TATSUYA ,  TSUNASHIMA KENJI ,  YAMAUCHI HIDEYUKI ,  AOKI SEIZO ,  KUROME HIROKAZU

IPC: B29C55/12 ,  B29K67/00 ,  B29L7/00 ,  B29L9/00 ,  B32B7/02 ,  B32B27/36 ,  C08J5/18 ,  B29D7/01 ,  B32B27/08

Abstract: A polyester film, which is substantially non-oriented and whose main component is polyethylene terephthalate, is formed as a some shape, for example, a package, at a condition causing no yield point. The formation ability of the polyester film for forming is improved, and a formed body having a good uniformity in thickness can be obtained. Further, the range of the temperature condition causing no yield point can be enlarged by laminating a PET-system polyester, which originally tends to cause a yield point by itself, onto a polyester having no yield point. In such a laminated polyester film, the slipping property and releasing property from a mold of the film can be improved by specifying the ranges of the degree of crystallinity of each layer, the adhesive force at a high temperature of the film and the surface roughness of the film, and the shape of a formed body can be improved.

公开(公告)号：JPH0433854A

公开(公告)日：1992-02-05

申请号：JP14306790

申请日：1990-05-30

Applicant: TORAY INDUSTRIES

Inventor： HIRAOKA TOSHIHIKO ,  ITO TATSUYA ,  TSUNASHIMA KENJI

IPC: B32B27/36 ,  G11B7/24

Abstract: PURPOSE:To improve a heat resistance and a solvent resistance, and to reduce an optical distortion, i.e., double refraction by combining polyester films having special photoelastic constant, glass transition temperature, haze value, double refraction index in a surface. CONSTITUTION:A polyester film made at least of an A layer and a B layer in which photoelastic constant of polyester of the A layer is 1.6X10- mm /kgf or less and glass transition temperature of polyester of the B layer is 75 deg.C or higher, has 5% or less of a haze value at the time of dipping in solvent, 2.5 x 10 or less of double refraction in an entire layer, and a front layer of at least one side of the film is the A layer. For example, as the A layer polyester, polybutylene terephthalate having 18 of relative viscosity is used. In the polyester of the B layer, terephthalic acid is used as dicarboxylic acid, and polyester having 20 of relative viscosity and containing 50mol% of ethylene glycol and 50mol% of bis(4-hydroxyethoxyphenyl)sulfone is used as dihydroxy compound.

公开(公告)号：JPH0433853A

公开(公告)日：1992-02-05

申请号：JP14306690

申请日：1990-05-30

Applicant: TORAY INDUSTRIES

Inventor： ITO TATSUYA ,  YAMAUCHI HIDEYUKI ,  TSUNASHIMA KENJI

IPC: B32B27/36

Abstract: PURPOSE:To improve printability, deposition suitability of printing ink, etc., by forming of a high melting point polyester layer and a low melting point polyester layer, and setting rough shape index Rt/Ra [(maximum roughness)/(mean roughness)] of the surface of the low melting point polyester layer to 12-100. CONSTITUTION:Inert particles (silicon dioxide, etc.) necessary for high and low melting point polyesters are added, melted, extruded by using separate extruders, and laminated in a base manifold or in a polymer tube in a base. Here, the high melting point polyester is desirably polyester terephthalate containing 96mol% or more of ethylene terephthalate. The acid content of the low melting point polyester contains 50-95mol% of aromatic dicarboxylic acid and 5-50mol% of aliphatic dicarboxylic acid, and glycol content is desirably aliphatic glycol. Roughness shape index Rt/Ra [(maximum roughness)/(mean roughness)] of the surface of the low melting point polyester layer is required to be 12-100.

公开(公告)号：JPH02139220A

公开(公告)日：1990-05-29

申请号：JP29429988

申请日：1988-11-21

Applicant: TORAY INDUSTRIES

Inventor： TANAKA SHIGERU ,  ITO TATSUYA ,  SUYAMA MASAYOSHI

IPC: B29C55/02 ,  B29K23/00 ,  B29L7/00 ,  C08J5/18 ,  C08J9/00

Abstract: PURPOSE:To improve the hiding power, the surface gloss and the printability of the film by a method wherein the longitudinal strength and the sum of the Young's moduli in longitudinal and lateral directions of polyolefin film, the optical density and gloss of which are specified, are specified. CONSTITUTION:Of the polyolefin film, of which the optical density is 0.1 or more and the glossiness is 40% or more, its longitudinal strength is made to be 8kg/mm or higher and the sum of its Young's moduli in longitudinal and lateral directions is made to be 250kg/mm or more. Resin, which is prepared by adding 5-50 pts.wt. of methylpentene polymer, the extraction residue of n-heptane of which is 40% or more, to 100 pts.wt. of polypropylene, the isotactic index of which is 80% or more and the intrinsic viscosity of which is 1.2-3.5dl/g, is formed by fusing into the form of sheet or tube and, after that, micro- stretched in the elastic limit at 120 deg.C or lower and further stretched at least uniaxially within the range of 120-170 deg.C.

公开(公告)号：JPH01223136A

公开(公告)日：1989-09-06

申请号：JP4787888

申请日：1988-03-01

Applicant: TORAY INDUSTRIES

Inventor： ITO TATSUYA ,  TSUCHIYA KATSUHIRO ,  TANAKA SHIGERU

IPC: C08J9/26 ,  H01G9/02 ,  H01M2/16

Abstract: PURPOSE:To obtain the subject film suitable as separators in electrolytic capacitors, cells or batteries, etc., without fish eyes, by adding two kinds of low- and high-melting organic solids to a polyolefin, melt extrusion molding the resultant mixture and extracting the low-melting organic solid. CONSTITUTION:(A) An organic solid (preferably dicyclohexyl phthalate or triphenyl phosphite) having 35-100 deg.C, preferably 45-80 deg.C melting point, 200-1,000mol.wt., polarity and polar groups in the molecular structure in an amount of 80-180pts.vol., preferably 90-160pts.vol. and (B) an organic solid (e.g., phthalic anhydride) having >=105 deg.C melting point which is within the range of =the melt crystallization temperature of the afore-mentioned polyolefin and

公开(公告)号：JPH01167343A

公开(公告)日：1989-07-03

申请号：JP32643887

申请日：1987-12-23

Applicant: TORAY INDUSTRIES

Inventor： ITO TATSUYA ,  TANAKA SHIGERU ,  YABE KENJI

IPC: C08J9/26 ,  C08J9/36 ,  H01G9/02 ,  H01M2/16

Abstract: PURPOSE:To obtain the title film having a definite average pore size and porosity as well as each specific value in longitudinal strength, longitudinal Young's modulus, widthwise strength and widthwise elongation and useful as electrolytic separator, various kind of films and separating membrane. CONSTITUTION:For example, in the production of the title film by blending 100 pts.wt. polyolefin resin with 100-200 pts.wt. organic solid such as phthalic acid ester, the blend is molded so that average pore size porosity, longitudinal strength, longitudinal Young's modulus, widthwise strength and widthwise elongation of the film are each 0.05-5mum, 50-85%, >=4kg/mm , >=20kg/mm , and >=100% to provide the aimed film. Furthermore, thickness of the film is preferably 10-50mum.

公开(公告)号：JPH0198639A

公开(公告)日：1989-04-17

申请号：JP55888

申请日：1988-01-05

Applicant: TORAY INDUSTRIES

Inventor： ITO TATSUYA ,  TSUCHIYA KATSUHIRO ,  YABE KENJI

IPC: C08J9/26 ,  C25B13/08 ,  H01G9/02 ,  H01M2/16

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

公开(公告)号：JPS63170033A

公开(公告)日：1988-07-13

申请号：JP82687

申请日：1987-01-06

Applicant: TORAY INDUSTRIES

Inventor： WATANABE SHINICHI ,  ITO TATSUYA ,  YABE KENJI

IPC: B32B27/32 ,  B32B7/02 ,  B32B7/12 ,  H01B17/60

公开(公告)号：JPS61131309A

公开(公告)日：1986-06-19

申请号：JP24350784

申请日：1984-11-20

Applicant: Toray Industries ,  Furukawa Electric Co Ltd

Inventor： ITO TATSUYA ,  TSUNASHIMA KENJI ,  NAKAYAMA KIYOSHI ,  IWATA YOSHISUKE

IPC: B32B7/12 ,  B32B27/10 ,  B32B27/12 ,  B32B27/32 ,  H01B17/60

公开(公告)号：JP2513786B2

公开(公告)日：1996-07-03

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.