Process for the manufacturing of an article of plastic material
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United States of America Patent
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-
Sep 3, 2002
Grant Date -
N/A
app pub date -
Sep 9, 1999
filing date -
Mar 10, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Article made of thermoplastic material, which article is rigid and at least partly heat insulating. The article includes a laminate in at least parts of the article. The laminate includes a first and a second layer of solid thermoplastic material (A) and an intermediate layer of expanded thermoplastic material (B) with an average density of 50-800 kg/m.sup.3. The thermoplastic materials (A) and (B) are the same or compatible materials. The article is manufactured according to a process comprising the steps a) forming of a solid outer layer, b) manufacturing of an intermediate expanded layer and c) the appendage of functional parts such as reinforcing profiles, guiding profiles, stacking profiles, hinge parts, pockets, label holders, profiles or holes for automatic handling, locking devices or the like.
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