Method for producing a multilayer coextrudate and a coextrudate produced according thereto
Assignee4P Folie Forchheim Zweigniederlassung der Van Leer Deutschland GmbH & Co. KG
InventorWalter Günter
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Abstract
Process for the production of a multilayer coextrudate with a plastic layer that has release properties with respect to adhesives, where the materials producing the release properties are located within the plastic layer, where a first web is provided in production of the coextrudate on one side of which a layer of adhesive is located, after which the plastic layer with the release properties follows, which is in turn bonded to a second web. A multilayer coextrudate is characterized by the fact that at least two plastic films are provided, between which a layer of adhesive and a further layer that has release properties with respect to the adhesive are located.
Claims9
Process for the production of a multilayer coextrudate with a plastic layer that has release properties with respect to adhesives, comprising
- locating materials producing the release properties within the plastic layer, wherein a first plastic web film (2, 22) is provided in production of the coextrudate on one side of which a layer of adhesive (3, 23) is located, after which the plastic layer (4, 24) with the release properties follows, which is in turn bonded to a second plastic web film (5, 25);
- and
- wherein the layers of the coextrudate are coextruded simultaneously;
- and
- wherein further layers (26) are provided that are located on and bonded to both sides of the plastic web films (2, 5 or 22, 25), such that both plastic web films are each provided with a further layer (26) bonded to the plastic films.
Process according to claim wherein a substrate web (2,5;
- 22,25), to which the other layers are extruded in a single process operation, is provided as the first or second web.
Dependencies are inferred from the claim text.