Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Plural sequential shaping or molding steps on same workpiece
Patent
1994-09-02
1996-05-28
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Plural sequential shaping or molding steps on same workpiece
264321, B29C 6720
Patent
active
055208738
ABSTRACT:
Foam boards are produced by aftertreating customary and known foam boards by compression by compressing foam boards having a density of from 17 to 30 kg/m.sup.3 to a maximum extent of from 60 to 90% of their original thickness, releasing the compression, and repeating this process at least once.
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BASF - Aktiengesellschaft
Kuhns Allan R.
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