METHOD OF FORMING DYNAMICALLY VULCANIZED THERMOPLASTIC ELASTOMER FILMS AND FILMS FORMED THEREFROM

• Main Authors: CHENG JIANYA, PORTER C SHANNON, PETER W MANDERS, HARI P NADELLA
• Format: Patent
• Language: English; Japanese
• Published: 23.05.2016
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

PROBLEM TO BE SOLVED: To provide a process to form a dynamically vulcanized thermoplastic elastomer film, also referred to as a DVA film, directly from a DVA raw material.SOLUTION: The process to form a vulcanized thermoplastic elastomer film comprises the steps of: 1) forming a thermoplastic elastomeric material melt comprising an elastomer and a thermoplastic resin in a first mixer 10 under conditions where the thermoplastic elastomeric material is dynamically vulcanized; 2) passing the thermoplastic elastomeric material melt formed in the first mixer 10 through a second mixer 60 to form a uniformed melt; and 3) passing the thermoplastic material melt exiting from the second mixer 60 through a film die 62 to form a thermoplastic elastomer material film.SELECTED DRAWING: Figure 7 【課題】DVAフィルムとも呼ばれる、動的に加硫された熱可塑性エラストマーフィルムをDVA原材料から直接形成するための方法の提供。【解決手段】下記工程を含む加硫されたエラストマーフィルムの形成方法。1)エラストマーと熱可塑性樹脂とを含む熱可塑性エラストマー材料の融成物を、第1ミキサー１０内で、熱可塑性エラストマー材料が動的に加硫されるような条件下で形成する工程、2)第1ミキサー１０内で形成された熱可塑性エラストマー材料の融成物を第2ミキサー６０に通して、均一化融成物を形成する工程、3)第2ミキサー６０から出る熱可塑性材料の融成物をフィルムダイ６２に通して、熱可塑性エラストマー材料のフィルムを形成する工程。【選択図】図７