Mold for skin covered foamed plastic molding

• US 5,011,394 A
• Filed: 03/28/1989
• Issued: 04/30/1991
• Est. Priority Date: 11/29/1988
• Status: Expired due to Fees

• Current Assignee: Ikeda Bussan Co., Ltd. (Johnson Controls International plc)
• Original Assignee: Ikeda Bussan Co., Ltd. (Johnson Controls International plc)
• Inventors: Mori, Masami, Mizuno, Hisayoshi, Katagiri, Hiroyuki
• Primary Examiner(s): Woo, Jay H.
• Assistant Examiner(s): Mackey, James P.
• Application Number:
  US07/329,578
• Time in Patent Office: 763 Days
• Field of Search: 425/4 R, 425/817 R, 425/543, 425/559, 425/560, 425/579, 425/117, 425/129.1, 425/145, 425/447, 425/387.1, 425/388, 264/46.4, 264/46.6, 264/46.7, 264/46.8, 264/45.3, 264/46.9, 264/45.1, 264/DIG. 10, 249/175, 249/83
• US Class Current: 425/117
• CPC Class Codes: B29C 33/0061 characterised by the configuration of the material feeding channel sprue channels for injection moulding B29C45/27
• CPC Class Codes: B29C 44/383 using spreading devices mounted in the mould, in front of the feed opening

Abstract

A mold for skin covered foamed plastic molding which utilizes a middle mold to be placed between an upper mold and a lower mold capable of preventing penetration of the liquid foam resin to be poured onto the skin cover, and also capable of improving the efficiency of the manufacturing process. The mold includes a middle mold configured for reducing pressure exerted by the liquid foam resin falling on the skin cover.

Claims

1. A mold for skin covered foamed plastic molding, comprising:

a lower mold having a molding surface onto which a skin cover is to be placed, so that a liquid foam resin can be poured onto the skin cover;

an upper mold to be closed over the lower mold; and

a middle mold to be placed between the upper mold and the lower mold, and having means for reducing pressure exterted by the liquid foam resin on the skin cover.

2. The mold of claim 1, wherein the reducing means comprises a deposit area on an upper side portion of the middle mold, onto which the liquid foam resin is to be poured.

3. The mold of claim 2, wherein the deposit area has a concave cross sectional shape.

4. The mold of claim 2, wherein the middle mold further includes a receiving plate disposed adjacent to and protruding from the side portion below the deposit area, for receiving the liquid foam resin flowing out from the deposit area before the liquid foam resin falls onto the skin cover.

5. The mold of claim 1, wherein the reducing means comprises a receiving area on an upper side portion of the middle mold, onto which the liquid foam resin is to be poured, and wherein the upper mold and the middle mold form a narrow injection path below the receiving area, through which the liquid foam resin from the receiving area flows down onto the skin cover.

6. The mold of claim 5, wherein the receiving area has a flat cross sectional shape.