Mold assembly for molding thermoplastic resin and method of manufacturing molded article of thermoplastic resin
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-045/37
출원번호
US-0084896
(1998-05-28)
우선권정보
JP0159780 (1997-06-17)
발명자
/ 주소
Tahara Hisashi,JPX
Ito Takayuki,JPX
출원인 / 주소
Mitsubishi Engineering-Plastics Corp., JPX
대리인 / 주소
Wenderoth, Lind & Ponack, L.L.P.
인용정보
피인용 횟수 :
21인용 특허 :
8
초록▼
A mold assembly for molding a thermoplastic resin, which comprises; (a) a first mold member and a second mold member for manufacturing a molded article of a thermoplastic resin, (b) an insert block provided in the first mold member, said insert block constituting part of a cavity, having a thickness
A mold assembly for molding a thermoplastic resin, which comprises; (a) a first mold member and a second mold member for manufacturing a molded article of a thermoplastic resin, (b) an insert block provided in the first mold member, said insert block constituting part of a cavity, having a thickness of 0.1 mm to 10 mm and being formed of a material having a thermal conductivity of 2.times.10.sup.-2 cal/cm.multidot.sec.multidot..degree.C. or less, and (c) a molten thermoplastic resin introduction portion provided in the second mold member, wherein an insert block covering portion is formed in the second mold member, and when the first mold member and the second mold member are clamped to each other, (A) a clearance between the insert block and the insert block covering portion is equal to, or less than, 0.03 mm, and (B) an amount of overlapping of the insert block and the insert block covering portion is equal to, or greater than, 0.5 mm.
대표청구항▼
[ What is claimed is:] [1.] A method of manufacturing a molded article of a thermoplastic resin by means of a mold assembly for molding a thermoplastic resin, said mold assembly comprising:(a) a first mold member and a second mold member for manufacturing the molded article of a thermoplastic resin,
[ What is claimed is:] [1.] A method of manufacturing a molded article of a thermoplastic resin by means of a mold assembly for molding a thermoplastic resin, said mold assembly comprising:(a) a first mold member and a second mold member for manufacturing the molded article of a thermoplastic resin,(b) an insert block provided in the first mold member, said insert block constituting part of a cavity, having a thickness of 0.1 mm to 10 mm and being formed of a material having a thermal conductivity of 2.times.10.sup.-2 cal/cm.multidot.sec.multidot..degree.C. or less, and(c) a molten thermoplastic resin introduction portion provided in the second mold member,wherein an insert block covering portion is formed in the second mold member, andwhen the first mold member and the second mold member are separated from each other, the insert block is positioned in the first mold member and the insert block covering portion is positioned in the second mold member, andwhen the first mold member and the second mold member are clamped to each other,(A) a clearance between the insert block and the insert block covering portion is equal to, or less than, 0.03 mm, and(B) an amount of overlapping of the insert block and the insert block covering portion is equal to, or greater than, 0.5 mm,said manufacturing method comprising;introducing a molten thermoplastic resin into the cavity through the molten thermoplastic resin introduction portion, andthen, cooling and solidifying the thermoplastic resin to manufacture the molded article.
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이 특허에 인용된 특허 (8)
Kim Bang M. (Schenectady NY) Niemeyer Matthew F. (North Chatham NY), Insulated mold structure for injection molding of optical disks.
Maus Steven M. (Osseo MN) Galic George J. (Columbia Heights MN), Precision surface-replicating thermoplastic injection molding method and apparatus, using a heating phase and a cooling.
Izumida Toshiaki (Hiratsuka JPX) Akahori Kazuyuki (Hiratsuka JPX) Yoshida Katsumi (Hiratsuka JPX) Tahara Hisashi (Hiratsuka JPX), Process for the production of molded article with sealed pattern.
Tahara,Hisashi; Kaneishi,Akimasa, Light guide plate made of transparent resin, molding method thereof, insert block, mold assembly, and area light apparatus.
Sudo,Yoshihiro; Komori,Akio; Ohtawa,Hideki; Ohtsuki,Katsuharu; Sunouchi,Taku, Metal mold for forming, method for the preparation of the metal mold for forming and molded article obtained on forming by the metal mold for forming.
Ghosh, Syamal K.; Chatterjee, Dilip; Carlton, Donn B., Method for making an injection moldable feedstock which can provide articles with improved physical properties.
Sudo,Yoshihiro; Komori,Akio; Ohtawa,Hideki; Ohtsuki,Katsuharu; Sunouchi,Taku, Molding metal mold, method of producing molding metal mold, and articles molded by molding metal mold.
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