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公开(公告)号：JPH07323464A
公开(公告)日：1995-12-12
申请号：JP109495
申请日：1995-01-09
Applicant: TORAY INDUSTRIES
Inventor： MIYAGAWA KATSUTOSHI , YASHIRO TOSHIYA , TOYODA KATSUYA , TSUNASHIMA KENJI
IPC: B29C47/86 , B29C48/305 , B29K101/12 , B29L7/00 , B29C47/14
Abstract: PURPOSE:To restrain the unevenness of a film in its thickness by heat-melting thermoplastic resin at a melt-completion temperature or higher to be forwarded Into a die, and cooling it at the low temperature crystallization Initiating temperature or higher in the land part of the die to be extruded thereafter. CONSTITUTION:In the case where a sheet cast film is obtained by melt-extruding thermoplastic resin In use of a flat die, thermoplastic resin is heat-melted at a fusion completion temperature Tme or higher to be melted and then forwarded into the die. After it is subsequently expanded in its width direction in the die, so that thermoplastic resin is subjected to a process to be extruded after being cooled at Tmc or lower and high temperature crystallization initiating temperature Tcb or higher. The cast film is preferred to be substantially an unstretched film with a birefringence rate lower than 0.01, and the relation of the temperature Tout of thermoplastic resin at the outlet of the die land part is preferably set to be Tin>Tout+20 deg.C. By making resin Into a low temperature and high rigidity in this manner, the film vibration and unevenness of the thickness can be restrained.
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公开(公告)号：JPH07205383A
公开(公告)日：1995-08-08
申请号：JP530494
申请日：1994-01-21
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , IMAI SHIRO , TSUNASHIMA KENJI
Abstract: PURPOSE:To provide a polyester film excellent in adhesiveness, impact resistance and taste characteristics and having excellent impact resistance even after heat treatment, especially, such as dry baking or retorting and suitably adapted to a metal can be produced by molding processing. CONSTITUTION:A polyester film is obtained by laminating a B-layer composed of polyester (III) based on polybutylene terephthalate with an m.p. of 231-260 deg.C to an A-layer composed of a mixture consisting of polyester (I) based on polyethylene terephthalate with an m.p. of 150-230 deg.C and polyester (II) based on polybutylene terephthalate with an m.p. of 120-225 deg.C on a wt. basis of 50:50-95:5 and has the coefficient of surface orientation of 0.05 or less.
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公开(公告)号：JPH07102082A
公开(公告)日：1995-04-18
申请号：JP27784993
申请日：1993-10-07
Applicant: TORAY INDUSTRIES
Inventor： KIDA KENJI , HARADA YUTAKA , TSUNASHIMA KENJI
IPC: C08J5/18 , B29C55/02 , B29K33/00 , B29K71/00 , B29L7/00 , B29L9/00 , B32B27/30 , C08L25/00 , C08L25/18 , C08L71/00 , C08L71/08
Abstract: PURPOSE:To obtain a gas barrier film with high transparency and gas barrier properties by forming a layer contg. a polymer having specific repeating styrenesulfonic acid units and a polyalkylene oxide. CONSTITUTION:A gas barrier film has a layer contg. 5-95wt.% polymer having repeating styrenesulfonic acid units represented by the formula (wherein R is H or methyl; M is H, an alkali or alkaline earth metal, ammonium, or phosphonium; and R1 to R4 are each H or alkyl) and 5-95wt.% polyalkylene oxide, e.g. polyethylene oxide, having a mol.wt. of 400-1,000,000. The thickness of the layer, though not limited, is pref. 0.01-20mum in terms of gas barrier properties. The film is pref. transparent and has a light transmission of 60% or higher.
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公开(公告)号：JPH0796544A
公开(公告)日：1995-04-11
申请号：JP24459493
申请日：1993-09-30
Applicant: TORAY INDUSTRIES
Inventor： MINAMIZAWA HIDEHITO , TOYODA KATSUYA , TSUNASHIMA KENJI
Abstract: PURPOSE:To achieve a good strength in the lateral direction, electromagnetic exchanging properties and slit properties of a film by a method wherein the ratio between the F-5 value in the longitudinal direction and the F-5 value in the lateral direction is specified and the ratio between the refractive index in the longitudinal direction and the refractive index in the lateral direction are also specified. CONSTITUTION:The F-5 value in the lateral direction of a film is more than 14kg/mm , the ratio between the F-5 value in the longitudinal direction and that in the lateral direction is less than 1.1 and the ratio (MD/TD) between the refractive index in the longitudinal direction and that in the lateral direction is more than 0.975. Polyethylene terephthalate is preferable especially as polyester. In a manufacture, the material is melted and extruded in a filmy state by an extruding machine, made into an amorphous state by quenching and solidifying, stretched and oriented in two steps in a longitudinal direction. The stretching temperature is a glass temperature (Tg)-Tg+60 deg.C and the second step stretching is performed at a temperature lower by at least 5 deg.C than the stretching temperature of the first step. Then the two step stretching and orientation is performed in the lateral direction.
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公开(公告)号：JPH0716920A
公开(公告)日：1995-01-20
申请号：JP16690493
申请日：1993-07-06
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , TOYODA KATSUYA , KIMURA MASAHIRO
Abstract: PURPOSE:To enable even any crystalline polymer to be stably successively biaxially orientated by a method wherein a degree of crystallization of a polymer film prior to orientation is specified. CONSTITUTION:When a film consisting of crystalline polymer is successively orientated biaxially such as in a length direction and a width direction, a degree of crystallization of a film consisting of polymer prior to orientation is made under 15%. The crystalline polymer means a polymer which can be crystallized by heating, and should preferably be polyamide, polybutylene terephthalate, polyhexamethylene terephthalate, polyoxymethylene, and copolymer thereof. In order to obtain a good plainness film of under 10% in degree of crystallization, a combined method of electrostatic impression and contact casting using surface tension of water is especially preferable.
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Patent Agency Ranking
公开(公告)号：JPH072851B2
公开(公告)日：1995-01-18
申请号：JP4408290
申请日：1990-02-23
Applicant: TORAY INDUSTRIES
Inventor： MYAGAWA KATSUTOSHI , TSUNASHIMA KENJI , AOKI SEIZO
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公开(公告)号：JPH06329886A
公开(公告)日：1994-11-29
申请号：JP11569993
申请日：1993-05-18
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , NAKAWA TAKAHIRO , SUZUKI MASARU
IPC: C08G63/685 , C08K5/34 , C08L67/00 , C08L67/02
Abstract: PURPOSE:To obtain the subject composition consisting of a polyester having a nitrogen-containing heterocyclic ring at the side chain, small in lowering of intrinsic viscosity before and after melt extrusion, excellent in resistance to hydrolysis, resistance to deterioration due to oxidation and oxygen barrier properties and useful for fibers, coating films, etc. CONSTITUTION:The objective composition comprises a polyester having one ore more nitrogen-containing heterocyclic rings selected from the group consisting of pyridine, pyridazine, pyrimidine, pyrazine, quinoline, piperidine, phenazine, pyrol, pyroline, pyrrolidine, pyrazole, imidazole, piperidine, piperazine, indole, carbazole and their derivatives [e.g. pyridinyl-alkylene diol (derivative)] at the side chain.
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公开(公告)号：JPH06305273A
公开(公告)日：1994-11-01
申请号：JP9808593
申请日：1993-04-23
Applicant: TORAY INDUSTRIES
Inventor： OOSAKI KATSUZANE , SUZUKI MASARU , FUKUHARA MOTOTADA , TSUNASHIMA KENJI
IPC: B41N1/24
Abstract: PURPOSE:To obtain an original paper with an excellent film making stability by directly bonding a polyester film and a porous carrier consisting of polyester fiber, and setting a separation strength to be larger than a specific value between the film and the porous carrier. CONSTITUTION:A polyester film and a porous carrier consisting of polyester fiber are thermally stuck to each other, and then they are co-oriented to be directly secured so that separation strength between the film and the porous carrier is set larger than 1g/cm. The original paper thus obtained has a good film making stability and therefore printings obtained by stencil printing in use of the original paper in accordance with the present invention has an extremely high quality in image quality. Thus, disadvantages such as lowering of an ink resistive property, fusion to a thermal head, and discharge of harmful chlorine are prevented.
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公开(公告)号：JPH0684450B2
公开(公告)日：1994-10-26
申请号：JP3532486
申请日：1986-02-21
Applicant: TORAY INDUSTRIES
Inventor： SAKUBAYASHI MASABUMI , TSUNASHIMA KENJI , AOKI SEIZO
IPC: C08J9/00
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公开(公告)号：JPH06255058A
公开(公告)日：1994-09-13
申请号：JP7094693
申请日：1993-03-05
Applicant: TORAY INDUSTRIES
Inventor： FURUKAWA KEIICHI , KIMURA MASAHIRO , TSUNASHIMA KENJI
Abstract: PURPOSE:To provide excellent processability and to extremely reduce change of an external appearance due to a sunlight after processing by setting yellowing after irradiating by the use of a mercury lamp for a specific time to a specific value in a laminated film laminated with polyester containing specific ingredient and heat sealable polyester and having substantially no orientation. CONSTITUTION:A polyester A containing 5-30mol% of long chain aliphatic dicarboxylic acid group having 15C or less alkylene group as acid ingredient and 80mol% of diol ingredient as constituent containing mainly 1,4-butanediol residue, and a heat sealable polyester B containing 5-30mol% of long chain aliphatic dicarboxylate residue having 16C or more alkylene group as acid ingredient, 80mol% of diol ingredient as constituent containing mainly 1,4- butanediol residue are laminated. The polyester laminated film is substantially a film having no orientation, and not particularly oriented. Thickness ratio, laminated structure of the polyesters A, B are so set that yellowing after it is irradiated by the use of a mercury lamp for 100 hours is set to 3.0 or less.
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