Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under...
Patent
1994-01-18
1995-11-21
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
2491141, 249115, B29C 4503
Patent
active
054681413
ABSTRACT:
A mold for injection molding of a thermoplastic resin. The mold comprises a cavity block, a core block, and a cavity formed between the cavity block and the core block and adapted to be filled with a molten resin. The cavity block includes an insulating layer on a cavity side thereof, the insulating layer being made of a material selected from the group consisting of ceramic materials, porcelain enamel, glass materials, heat resistant plastic materials and their composites. The core block includes a release insulating layer on a cavity side thereof, the release insulating layer being made of a material selected from the group consisting of fluorocarbon resins, fluorocarbon resin composite materials, silicone resin composite materials and metal platings with fluorocarbon resin dispersion, the release insulating layer further being adapted to effect both mold releasing and heat insulation.
REFERENCES:
patent: 3734449 (1973-05-01), Itou et al.
patent: 4225109 (1980-09-01), Yotsutsuji et al.
Patent Abstracts of Japan, vol. 4, No. 96, Abstract (M-20) [578] (Jul. 11, 1980); JP-A-55-55839 to Toyoda Chuo Kenkyusho K.K.
Patent Abstracts of Japan, vol. 10, No. 249, Abstract (M-511) [2305] (Aug. 27, 1986); JP-A-61-79611 to Cuyemura & Co., Ltd.
Fukuoka Masayoshi
Iwami Hiroyuki
Kanayama Hiroyuki
Heitbrink Tim
Taiyo Manufacturing Works Co., Ltd.
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