RESIN MOLDED PRODUCT, ITS MANUFACTURING METHOD AND DOOR FOR AUTOMOBILE

• Main Author: MIYAJI TOSHIKI
• Format: Patent
• Language: English
• Published: 15.02.2007
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; PERFORMING OPERATIONS; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FORVEHICLES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; VEHICLES IN GENERAL; WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILARDEVICES FOR VEHICLES; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a resin molded product capable of efficiently absorbing impact energy in spite of its lightweight properties by properly enhancing the rigidity of a protruded part. SOLUTION: A load receiving part 19 is integrally provided on the surface of a panel-like plate main body 17 in a protruded state and constituted of the produced part 20 on a base end side and the protruded part 22 on a leading end side protruded from the top surface 20a in an erected state of the protruded part 20 on the base end side. Both of the protruded part 20 on the base end side and the protruded part 22 on the leading end side are constituted of a skin layer 21 high in resin density constituting a surface layer and expanded layers 23a and 23b having a large number of voids and low in resin density. The expanded layers 23a and 23b of the protruded part 20 on the base end side and the respective expanded layers 23a and 23b of the protruded parts 22 on the leading end side are integrated so as to continue to each other. The expansion ratio of the expansion layer 23b of the protruded parts 22 on the leading end side is set so as to become larger than the expansion ratio of the expanded layer 23a of the protruded part 20 on the base end side. COPYRIGHT: (C)2007,JPO&INPIT