RESIN MOLDED PRODUCT

• Main Author: SANO KEIICHIRO
• Format: Patent
• Language: English
• Published: 08.08.1990
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; 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; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

PURPOSE:To easily modify a surface by plasma corona discharge treatment by integrally forming a surface layer part composed of a resin having unstable physical properties to the surface of the main body part of a molded product composed of a resin having stable physical properties. CONSTITUTION:The main body part 2 of a molded product has the shape of a product and is made of a resin containing various additives for preventing oxidation, deterioration, collapse or the like, for example, an oxidation inhibitor, an ultraviolet absorber, a stabilizer or the like and has stable pbysical properties. A surface layer part 3 covers the surface of the main body part 2 of the molded product extremely thinly in a thickness of several mum and integrally molded along with the main body 2 of the molded produot. Further, the surface layer part 3 is formed from a resin containing no various additives or having unstable physical properties easy to generate oxidation, deterioration or collapse by controlling the compounding of various additives. The layer part 3 are changed by applying plasma corona discharge treatment, the irradiation with ultraviolet rays/radioactive rays or heat treatment to the surface of a resin molded product 1 to easily modify the surface of the resin molded product.