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US 5,492,662 AGranted
Process for forming multiple density body from fibrous polymeric material and vehicle seat component formed thereby
OwnerJames A. Kargol, Gregary A. Hauptinventors
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Abstract
An improved method of making a more comfortable and easily recyclable body for a vehicle seat component using thermoplastic polymeric fibers is described. This method produces a body of thermoplastic polymeric fibers consisting of zones of different densities.
Claims2
The method of forming a body of thermoplastic polymeric fibrous material having selected areas of different densities, said method comprising the steps of:
- a. providing a mold cavity with means for establishing and maintaining zones for different densities of polymeric fibers during a compression and bonding process,
- b. placing selected amounts of thermoplastic polymeric fiber in the zones so that the fibrous material in the zones are of different density,
- c. providing a polymeric coating having a low melting point on at least some of said polymeric fibers,
- d. compressing the mold cavity so that said fibrous polymeric body is held in the desired shape,
- e. passing a heated atmosphere through the mold cavity at a temperature sufficiently high to melt said polymeric coating and cause the coating to flow in quantities sufficient to maintain said fibrous body in the desired shape when cooled;
- and
- f. cooling said fibrous body.
4 more elements
Dependencies are inferred from the claim text.