FILM FOR COATING METAL PLATE AND RESIN-COATED METAL PLATE

• Main Authors: FUJIMOTO, Soichi, KOJIMA, Katsumi, OSHIMA, Yasuhide
• Format: Patent
• Language: English; French; German
• Published: 20.10.2021
• 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; 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; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

A film for coating a metal sheet according to the invention satisfies that a ratio (EMD/ETD) of a Young's modulus EMD in a lengthwise direction to a Young's modulus ETD in a width direction is within a range between 1.1 and 4.0 inclusive, and a thermal shrinkage rate in both lengthwise and width directions at 200°C is equal to or smaller than 20%, the thermal shrinkage rate being measured by a thermo-mechanical analyzer. A sum (EMD + ETD) of the Young's modulus EMD in the lengthwise direction and the Young's modulus ETD in the width direction is preferably within a range between 3000 MPa and 12000 MPa inclusive. A melting peak temperature Tm1 present on a lowest temperature side is preferably within a range between 210°C and 280°C inclusive.