公开(公告)号：ID21788A

公开(公告)日：1999-07-22

申请号：ID990066

申请日：1998-07-09

Applicant: TORAY INDUSTRIES

Inventor： TSUNASHIMA KENJI ,  TOYAMA MASAHARU ,  MIYAKAWA KATSUYOSHI ,  OSADA SHUNICHI ,  CHIGIRA NOBUTSUGU ,  YOSHIMURA HIROSHI

IPC: B29C33/04 ,  B29C39/38 ,  B29C47/88

Abstract: The present invention provides a method and apparatus for producing a thermoplastic resin film, which allows a biaxially oriented polyester film to be formed at a high speed of 400 m/min or more. The method of the present invention is a method for producing a thermoplastic resin film, in which a molten thermoplastic resin film is brought into contact with a cooling medium, to be cooled and solidifed, for producing a cast film, characterized in that the surface temperature of the cooling medium in the region immediately before the melt reaching position is kept at not lower than the glass transition temperature Tg and not higher than the melting point Tm of the thermoplastic resin. The apparatus of the present invention is an apparatus for producing a thermoplastic resin, characterized in that a cooling medium has a heater and a cooler to ensure that the surface temperature of the cooling medium in the region immediately before the melt reaching position is kept at not lower than the glass transition temperature Tg and not higher than the melting point Tm of the thermoplastic resin, and that the surface temperature of the cooling drum in the region immediately before the film leaving position is kept lower than the the glass transition temperature Tg of the thermoplastic resin.

公开(公告)号：CA2264554A1

公开(公告)日：1999-01-21

申请号：CA2264554

申请日：1998-07-09

Applicant: TORAY INDUSTRIES

Inventor： OSADA SHUNICHI ,  MIYAKAWA KATSUTOSHI ,  YOSHIMURA HIROSHI ,  TSUNASHIMA KENJI ,  TOYAMA MASAHARU ,  CHIGIRA NOBUTSUGU

IPC: B29C33/04 ,  B29C39/38 ,  B29C47/88 ,  B29C55/00

Abstract: A method of producing a thermoplastic resin film capable of giving a biaxially oriented polyester film at a speed of as high as at least 400 m/min and an apparatus therefor. Specifically, a method of producing a thermoplastic film, wherein a molten thermoplastic resin film is closely bonded to, and cooled and solidified, on a cooling medium to prepare a cast film, characterized in that the surface temperature of the medium immediately before the melt is brought into contact therewith is higher than a glass transition temperature Tg of the thermoplastic resin but is lower than a melting point Tm thereof. The apparatus has a heater device and a cooler provided in the cooling medium so that the surface temperature of the medium immediately before the melt is brought into contact therewith is higher than the glass transition temperature Tg of the thermoplastic resin but is lower than the melting point Tm thereof, and the surface temperature of the medium immediately before being peeled off is maintained to be lower than the glass transition temperature Tg of the thermoplastic resin.

公开(公告)号：EP1640152A4

公开(公告)日：2008-04-23

申请号：EP04745498

申请日：2004-06-02

Applicant: TORAY INDUSTRIES

Inventor： OSADA SHUNICHI ,  MAKIYAMA CHIE ,  HOSOKAWA HIROFUMI ,  TSUNEKAWA TETSUYA

IPC: B32B27/00 ,  B32B27/36

CPC classification number: B32B27/36 ,  B32B27/08 ,  B32B2250/05 ,  B32B2250/244 ,  B32B2274/00 ,  B32B2307/406 ,  B32B2307/412 ,  B32B2307/518 ,  B32B2307/536 ,  B32B2307/704 ,  B32B2307/734 ,  B32B2307/738 ,  B32B2429/00 ,  B32B2439/00 ,  B32B2457/10 ,  B32B2479/00 ,  B32B2553/00 ,  B32B2581/00 ,  H01M2/0257 ,  H01M2/0267 ,  H01M2/0275 ,  H01M2/0287 ,  H01M10/052 ,  H01M10/0525 ,  Y10S428/91 ,  Y10T428/24942 ,  Y10T428/2495 ,  Y10T428/26 ,  Y10T428/31786

Abstract: An objective of the present invention is to provide a film that has a high rigidity and is superior in dimension stability under high temperatures and transparency after heating processes, as well as in moldability within a wide temperature range, which has not been achieved by conventional techniques, and this objective has been achieved by a laminated film that includes 50 or more layers each of which is made of a thermoplastic resin and has a thickness of less than 30 nm or a biaxial oriented polyester film that has a density in a range from 1 to 1. 4 g/cm 3 , a heat shrinkage of - 2 to 2% in the longitudinal direction at 180°C and a breaking elongation in a range of 100 to 1000% in at least one direction.

公开(公告)号：EP2098896A4

公开(公告)日：2011-06-29

申请号：EP07807111

申请日：2007-09-12

Applicant: TORAY INDUSTRIES

Inventor： GOUDA WATARU ,  OSADA SHUNICHI ,  OYAMA MASATOSHI

IPC: G02B6/122 ,  G02B6/12

CPC classification number: G02B6/1221 ,  G02B6/02042 ,  G02B6/10 ,  Y10T428/2495

公开(公告)号：EP1676698A4

公开(公告)日：2011-04-13

申请号：EP04792346

申请日：2004-10-14

Applicant: TORAY INDUSTRIES

Inventor： OSADA SHUNICHI ,  HOSOKAWA HIROFUMI ,  TSUNEKAWA TETSUYA

IPC: B32B27/00 ,  B32B7/02 ,  B32B27/06

CPC classification number: B32B27/08 ,  B32B7/02 ,  B32B27/06 ,  B32B2250/05 ,  B32B2250/24 ,  B32B2307/306 ,  B32B2307/418 ,  B32B2307/7246 ,  B32B2307/7265 ,  B32B2457/12 ,  B32B2457/20 ,  Y10T428/24942 ,  Y10T428/2495 ,  Y10T428/24975 ,  Y10T428/3154 ,  Y10T428/31786 ,  Y10T428/31797 ,  Y10T428/31848

公开(公告)号：EP0943414A4

公开(公告)日：2002-07-10

申请号：EP98931031

申请日：1998-07-09

Applicant: TORAY INDUSTRIES

Inventor： TSUNASHIMA KENJI ,  TOYOMA MASAHARU ,  MIYAKAWA KATSUTOSHI ,  OSADA SHUNICHI ,  CHIGIRA NOBUTSUGU ,  YOSHIMURA HIROSHI

IPC: B29C33/04 ,  B29C39/38 ,  B29C47/88

CPC classification number: B29C39/38 ,  B29C33/044 ,  B29C33/046 ,  B29C47/0021 ,  B29C47/8845 ,  B29C47/887 ,  B29C47/888

Abstract: A method of producing a thermoplastic resin film capable of giving a biaxially oriented polyester film at a speed of as high as at least 400 m/min and an apparatus therefor. Specifically, a method of producing a thermoplastic film, wherein a molten thermoplastic resin film is closely bonded to, and cooled and solidified, on a cooling medium to prepare a cast film, characterized in that the surface temperature of the medium immediately before the melt is brought into contact therewith is higher than a glass transition temperature Tg of the thermoplastic resin but is lower than a melting point Tm thereof. The apparatus has a heater device and a cooler provided in the cooling medium so that the surface temperature of the medium immediately before the melt is brought into contact therewith is higher than the glass transition temperature Tg of the thermoplastic resin but is lower than the melting point Tm thereof, and the surface temperature of the medium immediately before being peeled off is maintained to be lower than the glass transition temperature Tg of the thermoplastic resin.

公开(公告)号：JP2002350636A

公开(公告)日：2002-12-04

申请号：JP2001152404

申请日：2001-05-22

Applicant: TORAY INDUSTRIES

Inventor： TSUNASHIMA KENJI ,  OSADA SHUNICHI ,  KONDO ATSUSHI

IPC: G02B5/30 ,  C08J5/18 ,  C08J7/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a polarizer by which a beautiful picture whose color contrast and hue are not deteriorated and which is not blurred can be realized for a long period of time even when the polarizer is used as a liquid crystal display element under a condition of high temperature and high humidity for a long period of time. SOLUTION: This polarizer is manufactured by impregnating and letting adsorbe a polarizing element in a polymer film in a supercritical state.

公开(公告)号：JP2001347556A

公开(公告)日：2001-12-18

申请号：JP2000175112

申请日：2000-06-12

Applicant: TORAY INDUSTRIES

Inventor： OSADA SHUNICHI ,  TSUNASHIMA KENJI ,  SONODA KAZUE

IPC: B29C48/305 ,  B29C47/14

Abstract: PROBLEM TO BE SOLVED: To provide a die for manufacturing a thermoplastic resin sheet which is free from a defect due to the generation of mouthpiece streaks and shows excellent thickness uniformity, and a method for manufacturing the thermoplastic resin sheet. SOLUTION: This flat die for molding the molten thermoplastic resin in the form of a sheet has a non-parallel part in the die land.

公开(公告)号：JP2001026044A

公开(公告)日：2001-01-30

申请号：JP20027799

申请日：1999-07-14

Applicant: TORAY INDUSTRIES

Inventor： OSADA SHUNICHI ,  OKAZAKI IWAO ,  SONODA KAZUE

IPC: C08J5/18 ,  B29C47/88 ,  B29C48/305 ,  B29C55/12 ,  B29C47/14

Abstract: PROBLEM TO BE SOLVED: To produce a thermoplastic resin film having no surface flaw or internal flaw, enhanced in insulation rate and film forming speed and excellent in quality and productivity. SOLUTION: In a method for guiding the molten sheet discharged from a die slit while bringing both side end parts thereof into contact with the guide plates provided to the outer surfaces of both ends of the die slit to bring the sheet into close contact with a cooling body to cool and solidify the same, the guide plates variable in shape corresponding to the neckdown of the discharged molten sheet are used to set a ratio De/Dc of the thickness Dc of the central part of the cooled and solidified sheet, and the thickness De inside by 20 mm from the end part of the sheet to 2 or less to produce a thermoplastic resin film. In this method, the molten sheet is pref. brought into close contact with the cooling body by a static electricity applying method to be cooled and solidified.

公开(公告)号：JPH11207816A

公开(公告)日：1999-08-03

申请号：JP965298

申请日：1998-01-21

Applicant: TORAY INDUSTRIES

Inventor： MIYAGAWA KATSUTOSHI ,  TSUNASHIMA KENJI ,  OSADA SHUNICHI

IPC: B29C55/16 ,  B29L7/00

Abstract: PROBLEM TO BE SOLVED: To enhance the productivity of a biaxially oriented thermoplastic resin film by simultaneously stretching a plurality of films by one stretching machine. SOLUTION: Two or more thermoplastic resin unstretched films are superposed one upon another to be simultaneously guided to a biaxially stretching tenter to be biaxially stretched at the same time and the start stretching speeds of the films are set to 10,000%/min or more in respective directions. By this constitution, even if a plurality of the films are stretched at the same time by one stretching machine, the films can be peeled without being sticked mutually and productivity can be largely enhanced.