METHOD FOR PRODUCING A MULTILAYER COEXTRUDATE AND A COEXTRUDATE PRODUCED ACCORDING THERETO

The invention relates to a method for producing a multi-layer coextrudate comprising a plastic material layer which has release properties with regard to adhesives, whereby the materials which create the release properties are arranged inside the plastic material layer. A first web (2, 22) is provid...

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Bibliographische Detailangaben
1. Verfasser:	GUNTER, WALTER
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY DYES INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS PERFORMING OPERATIONS POLISHES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING USE OF MATERIALS AS ADHESIVES WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to a method for producing a multi-layer coextrudate comprising a plastic material layer which has release properties with regard to adhesives, whereby the materials which create the release properties are arranged inside the plastic material layer. A first web (2, 22) is provided during the production of the composite. An adhesive layer (3, 23) is applied to one side of said web. The plastic material layer (4, 24) having the release properties is then applied onto said adhesive layer and is bonded with a second web (5, 25). The multilayer coextrudate is characterize d in that at least two plastic material films (2, 5; 22, 25) are provided between which an adhesive layer (3, 23) and an additional layer (4, 24) having release properties with regard to the adhesive are applied.