Title:
METHOD FOR THERMOFORMING CRYSTALLINE RESIN
Document Type and Number:
Japanese Patent JP2000094506
Kind Code:
A
Abstract:
To provide a thermoforming method to obtain a molding improved in transparency and rigidity with the use of polypropylene, which is an inexpensive homopolymer, and others.
A sheet produced from a polypropylene resin of 1.5-4.5 g/10 min melt index by a sheet apparatus is softened at a surface temperature of 120-164°C. The softened sheet is molded at a plug and mold clamping speed or a mold clamping speed of 250-600 mm/sec and under a pressure of 5-50 kg/cm2.
Inventors:
TAKAI TOSHIHIRO
YOKOI HIROYOSHI
YOSHIKOSHI AKIO
YOKOI HIROYOSHI
YOSHIKOSHI AKIO
Application Number:
JP27101398A
Publication Date:
April 04, 2000
Filing Date:
September 25, 1998
Export Citation:
Assignee:
ASANO KENKYUSHO KK
International Classes:
B29C51/10; B29C51/46; B29K23/00; B29K67/00; B29K105/32; B29L22/00; (IPC1-7): B29C51/46; B29C51/10
Attorney, Agent or Firm:
Hajime Miyake
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