Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1991-08-12
1993-01-05
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 451, 264 467, 264255, 2642711, B29C 6722
Patent
active
051768607
ABSTRACT:
A method of making an upholstered element wherein a cover is introduced into a mold to which it tightly adheres. The mold is closed by means of a first lid, following which a soft-foam reaction mixture is introduced into a first hollow chamber of the mold closed off by the first lid. At the end of the reaction, the soft-foam reaction mixture fills the first hollow chamber and forms a soft-foam body. Subsequently, the first lid is removed from the mold and replaced by a second lid, the soft-foam body remaining in the mold. Between the soft-foam body in the mold and the second lid, a second hollow space is formed. Subsequently, a rigid-foam reaction mixture is introduced into the second hollow chamber, which at the end of the reaction fills the second hollow chamber and forms a rigid-foam body.
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Atoma International of America Inc.
Kuhns Allan R.
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