FLUORORESIN FILMS, LAMINATE PRODUCED BY USING THE SAME, AND PROCESS FOR PRODUCING LAMINATE

• Main Authors: JITSUGIRI, YUKIO, YONEMORI, SHIGEAKI, FUKAWA, MAKOTO, ARUGA, HIROSHI, OKI, SATOSHI, HAYASHI, ATSUSHI, HAYASHI, YASUO
• Format: Patent
• Language: English; French; Japanese
• Published: 08.10.1998
• Edition: 6
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

An ethylene/tetrafluoroethylene copolymer (ETFE) film which has, after a surface treatment, polar groups on the surface and a surface roughness Ra lower than that before the treatment; an ETFE film which has, after a surface treatment, polar groups on the surface and contains a weakly bonded layer in an amount not larger than that of a weakly bonded layer on the film before the treatment; a laminate containing either of the films having extremely good bonding strength; and a process for mass-producing the laminate. L'invention concerne un film de copolymère éthylique ou du tétrafluoroéthylène (PTFE) présentant, après un traitement de surface, des groupements polaires à la surface, et une rugosité de surface Ra inférieure à celle qui existait avant le traitement. Elle concerne également un film PTFE qui, après un traitement de surface, présente des groupements polaires à la surface et contient une couche faiblement liée, en quantité non supérieure à celle d'une couche faiblement liée sur le film avant ledit traitement. L'invention concerne en outre un stratifié contenant l'un ou l'autre film et présentant une excellente résistance au liage. Elle concerne enfin un procédé de production en série dudit stratifié.