INJECTION MOLDING APPARATUS FITTED WITH PLASMA GENERATOR AND METHODS OF INJECTION MOLDING AND SURFACE TREATMENT

• Main Author: SUGAI HIDEO
• Format: Patent
• Language: English
• Published: 30.11.2006
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide an injection molding apparatus fitted with a plasma generator which does not use high frequency electric power and to provide methods of injection molding and surface treatment. SOLUTION: The injection molding is conducted as shown in Fig. 1. A and the molded product P is cooled and solidified. Using the jack 120 the second mold 200 is moved by one to a few millimeters to form the gap S, as shown in Fig. 1. B. At that time, the gas inlet 132 and the exhaust port 142 are open to the gap S by the movement of the second mold 200, and the gas introducing tube 131, the gap S and the exhaust tube 141 become communicant. These are kept airtight by the O-ring 201 of the second mold 200. Then exhaustion from the airtight gap S is performed using the exhaust apparatus 140, and a gas for the plasma treatment is supplied into the gap S from the gas supply section 130. When microwave is supplied to the microwave antenna 160 through the wave guide 150, electric discharge by the microwave occurs in the gap S and the gas plasma is generated. COPYRIGHT: (C)2007,JPO&INPIT