Process for annealing thermoplastics

A process for surface annealing thermoplastics comprises (a) heating with a heat source an outer film layer of a thermoplastic comprising an outer film layer and an internal portion; and (b) removing the heat source. The outer film layer of the thermoplastic is no more than 10 mils thick and the int...

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Bibliographische Detailangaben
Hauptverfasser:	SEEGER, GEORGE THOMAS, LEGRAND, DONALD GEORGE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A process for surface annealing thermoplastics comprises (a) heating with a heat source an outer film layer of a thermoplastic comprising an outer film layer and an internal portion; and (b) removing the heat source. The outer film layer of the thermoplastic is no more than 10 mils thick and the internal portion is 50-100[deg]C cooler than the outer layer after surface annealing.