Method for molding the headrest of an automotive seat

Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making

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264 466, 264 467, 264276, 264278, B29C 4406, B29C 4412

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active

057309175

ABSTRACT:
A method of molding a headrest of automotive seat comprises the following steps. First, a bag shaped flexible outer skin member is prepared, has an elongate slit formed therethrough. A part of a stay member is inserted into the outer skin member through the slit and set relative to the outer skin member. A given biasing force is applied to longitudinal ends of the slit so that the slit is stretched in longitudinally opposed directions and thus caused to take a closed position. Then, an injection nozzle of a foamable material feeder is put into the slit by expanding the slit against the biasing force. A foamable material is poured into the outer skin member, and the material feeding is stopped when a given amount of material is fed to the outer skin member. The application of the biasing force to the slit is continued until the material is sufficiently cured.

REFERENCES:
patent: 4908170 (1990-03-01), Kurimoto
patent: 5004572 (1991-04-01), Kurimoto
patent: 5061419 (1991-10-01), Kouda et al.
patent: 5135593 (1992-08-01), Quirin
patent: 5190707 (1993-03-01), Yanagishita
patent: 5478136 (1995-12-01), Takeuchi et al.
patent: 5611977 (1997-03-01), Takei
WPI Abstract Accession No. 96-420780/42 & JP 8207061A (Tachi-s) Aug. 13, 1996.
WPI Abstract Accession No. 89-027424/04 & JP 63299908A (MTP) Dec. 7, 1988.

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