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특허 상세정보

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내보내기 페이스북 공유 카카오톡 공유

Precision surface-replicating thermoplastic injection molding method and apparatus, using a heating phase and a cooling

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29C-045/73   
미국특허분류(USC) 264/406 ; 264/19 ; 264/32816 ; 249/116
출원번호 US-0986953 (1992-12-08)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 63  인용 특허 : 0
초록
▼

Improved optical disks for information storage and holographic imaging, and optical lenses and reflective optical elements are among the difficult-to-mold thermoplastic products which require precision replication of the molding surfaces, in micro detail. By heating (with circulating heat transfer fluids supplied by a hot side reservoir) these mold surfaces to a temperature setpoint sufficiently high to retard solidification and premature viscoelastic skinning of the molten thermoplastic injected into the mold cavity, superior quality molded surfaces can...

대표
청구항
▼

A method for injection molding thermoplastic articles within an injection mold having at least one mold cavity formed between opposing inserts made from high thermal conductivity material having at least 50,000 compressive yield strength, said inserts being maintained in thermal conductive contact with a heat transfer fluid circulating within channels entering to and exiting from the injection mold by means of supply lines and return lines plumbed to a fluid control unit having at least two heat transfer fluid reservoirs being heated or cooled under cont...

이 특허를 인용한 특허 피인용횟수: 63

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