Process for producing a multilayer molded article

• Main Authors: MATSUMOTO, MASAHITO, USUI, NOBUHIRO, MASUI, SYOHEI
• Format: Patent
• Language: English; French; German
• Published: 20.09.1989
• 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

A multilayer molded article comprising a resin body and a skin material with good quality is produced by a process which comprises the steps of: (a) supplying a skin material between a male mold (2) and a female mold (1) which are attached to clamping means, (b) starting closing of the male and female molds (1, 2), and supplying a resin melt (4) for the resin body between the skin material (3) and the male or female mold while temporarily stopping the closing action of the mold or adjusting a closing rate at 30 mm/sec or less when a cavity clearance between the molds is in the range between (c + 100) mm and (c + 5) mm (wherein c is the cavity clearance when the molding is finished), and (c) further closing the molds to the cavity clearance of c to finish the molding. r