LAMINATES OF CLOTH AND FILLED POLYPROPYLENES

Laminates comprising doth (17) or other sheet material bonded to a filled crystalline polypropylene composition (14) by means of an unfilled crystalline polypropylene composition (15), preferably a crystalline random copolymer of prop- yiene and 0.5 to 5.0%of ethylene. The laminates are made by sand...

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Bibliographische Detailangaben
Hauptverfasser:	JOHN CHARLES STEAD, PETER ERNEST WAGHORN
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 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:	Laminates comprising doth (17) or other sheet material bonded to a filled crystalline polypropylene composition (14) by means of an unfilled crystalline polypropylene composition (15), preferably a crystalline random copolymer of prop- yiene and 0.5 to 5.0%of ethylene. The laminates are made by sandwiching preferably a sheet (15) of the unfilled composition between the cloth (17) and filled composition (14) and then heating the sandwich to above the crystalline melting points of the polypropylenes and subsequently cooling to form the laminate. The fillers may be minerals or wood flour, the cloths may be knitted, woven or felted and other sheet materials may be plastics films, metal foils, paper or leather cloth.