METHOD AND DEVICE FOR POURING PLASTIC RAW MATERIAL LIQUID

Title:

METHOD AND DEVICE FOR POURING PLASTIC RAW MATERIAL LIQUID

Document Type and Number:

WIPO Patent Application WO/2004/020171

Kind Code:

A1

Abstract:

Liquid sending portions (7a, 7b) of an intermittent fixed displacement pump (6) intermittently sucking and discharging a fixed amount of fluid are parallelly arranged, plastic raw material liquid is discharged from the liquid sending portions (7a, 7b) with the timing of suction and discharge of the liquid sending portions being shifted from each other, plastic raw material liquid discharged from each of the liquid sending portions (7a, 7b) is joined, and the plastic raw material liquid joined is poured in a casting/ polymerizing die (4). Plastic raw material liquid can be stably sent even if its viscosity becomes higher, air bubbles are prevented from being produced in raw material pouring, and an excellent production yield is achieved.

Inventors:

KARASAWA ISAO (JP)
TONOUCHI KENICHI (JP)

Application Number:

PCT/JP2003/010924

Publication Date:

March 11, 2004

Filing Date:

August 28, 2003

Export Citation:

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Assignee:

SEIKO EPSON CORP (JP)
KARASAWA ISAO (JP)
TONOUCHI KENICHI (JP)

International Classes:

B29C31/04; B29C31/06; B29C39/02; B29C39/24; B29C39/44; F04B11/00; F04B23/04; F04B43/12; B29C37/00; B29L11/00; (IPC1-7): B29C39/24

Foreign References:

JP2002018866A	2002-01-22
JP7096235B2	2022-07-05
JPH0511007B2	1993-02-12
US4328967A	1982-05-11

Other References: