APPARATUS FOR TREATING SURFACE OF MOLDED RESIN PRODUCT

• Main Author: SANO KEIICHIRO
• Format: Patent
• Language: English
• Published: 08.10.1991
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; WORKING-UP

PURPOSE:To obtain an apparatus for treating the surface of a molded resin product, equipped with ultraviolet fluorescent lamps and low-pressure mercury lamps for irradiation of ultraviolet rays having continuous spectra with main wavelengths within specific regions together and capable of improving coating properties, printability and adhesion of a resin. CONSTITUTION:A material 7 to be treated (e.g. a bumper made of polypropylene-based resin) is fixed in a treating chamber 3 of an apparatus 1 for surface treatment having a light source (L) using ultraviolet fluorescent lamps 16 and low-pressure mercury lamps 15 for irradiation of ultraviolet rays having continuous spectra with main wavelengths within the region of 254 to 400nm together supported on a light source supporting frame 13 and surface treatment of the material 7 to be treated such as a molded resin product is carried out by irradiating the material 7 with the ultraviolet rays from the light source (L) while heating the material 7 to be treated by supplying hot air from a hot air feeding mechanism 10 composed of an air blasting motor 8 and a heating heater 9, dispersing the hot air with a dispersing honeycomb 12, then passing the hot air through a hot-air honeycomb 4 and feeding the air into the treating chamber 3.