Title:
METHOD AND DEVICE FOR MANUFACTURING POLYMER PRODUCT
Document Type and Number:
Japanese Patent JPS6122911
Kind Code:
A
Abstract:
@ The specification describes a method for producing moulded polymeric articles, such as urethane foam automobile seats, having variable firmness or density or varying in some other physical property from one portion of an article to another, by combining several hardenable precursor con- stituents in a predetermined ratio to one another and discharging the resulting mixture through a single nozzle (26) into a predetermined place in the mould (16) and then changing the constituents and/or ratios of the constituents as the mixture discharges into other parts of the mould (16) to produce the desired property in each part of the article. The mixing of the various constituents is under the control of a computer (34) programmed to deliver to each mould (16) a series of shots of the polymer mixture, each constituent being supplied at a proper rate, and gradually and simultaneously changing the flow of each constituent at the beginning and end of each shot to maintain a consistent ratio within each shot yet allowing a change of ratios from one shot to the next.
Inventors:
DONARUDO TEII BARUCHI
PEITON EMU JIMAAMAN JIYUNIA
PEITON EMU JIMAAMAN JIYUNIA
Application Number:
JP7133085A
Publication Date:
January 31, 1986
Filing Date:
April 05, 1985
Export Citation:
Assignee:
GEN MOTORS CORP
International Classes:
B29C39/02; B01F15/04; B29B7/28; B29B7/76; B29C39/24; B29C39/44; B29C44/04; G05D11/13; B29K75/00; B29K105/04; B29L31/58; (IPC1-7): B29B7/76; B29C39/02; B29C39/24; B29C39/44; B29K75/00; B29K105/04; B29L31/58
Domestic Patent References:
| JPS485861A |
Attorney, Agent or Firm:
Masao Okabe