PROBLEM TO BE SOLVED: To provide a method of manufacturing a film for a tire inner liner which exhibits an excellent gas barrier property with a thin thickness, thus enabling light weight of a tire and improvement in automobile mileage, and which has uniform physical properties in all directions of the film, thus having excellent formability and improved durability.SOLUTION: The present invention relates to a film for a tire inner liner which comprises: a base film layer including polyamide-based resin and a copolymer including a polyamide-based segment and a polyether-based segment; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein there is little difference between properties in a longitudinal direction and a transverse direction, and also relates to a method of manufacturing the film for a tire inner liner, which comprises: a step of melting the polyamide-based resin and the copolymer at 230 to 300°C, and extruding the molten substance under specific die gap conditions to form a base film; and a step of forming the adhesive layer including the resorcinol-formalin-latex (RFL)-based adhesive on the base film.
【課題】薄い厚さで優れた気密性、、軽量化、自動車の燃費向上、全方向に均一な物性、優れた成形性、耐久性を有するタイヤインナーライナ用フィルムの製造方法を提供する。【解決手段】本発明は、ポリアミド系樹脂と、ポリアミド(poly−amide)系セグメントおよびポリエーテル(poly−ether)系セグメントを含む共重合体とを含む基材フィルム層と、レゾルシノール−ホルマリン−ラテックス(RFL)系接着剤を含む接着層とを含み、縦方向および横方向間の物性の差がほとんどないタイヤインナーライナ用フィルムと、前記ポリアミド系樹脂と前記共重合体とを230〜300℃で溶融して特定のダイギャップ条件で押出して基材フィルムを形成する段階と、前記基材フィルム上にレゾルシノール−ホルマリン−ラテックス(RFL)系接着剤を含む接着層を形成する段階とを含むタイヤインナーライナ用フィルムの製造方法に関するものである。【選択図】 図1
FILM FOR TIRE INNER LINER
タイヤインナーライナ用フィルム
2015-09-24
Patent
Electronic Resource
Japanese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / C08J Verarbeitung , WORKING-UP / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C09J ADHESIVES , Klebstoffe |
FILM FOR TIRE INNER LINER, METHOD FOR MANUFACTURING FILM FOR TIRE INNER LINER, AND PNEUMATIC TIRE
European Patent Office | 2018
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