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EP0032244A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Composite film and process for its manufacture

Assignee: Rb Kunststoffpatent-Verwertungs AG Te Solothurn Z
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Filing: 1980-12-30
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Granted: —
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Expires: 2000-12-30
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Abstract

Abstract Translated from German Die Erfindung betrifft eine Verbundfolie, insbesondere eine Toilettensitzauflage, bei der mindestens eine dünne äußere, in Wasser normalerweise unlösliche Versiegelungsschicht (3) mit einer in Wasser lösbaren dickeren mindestens einschichtigen Trägerschicht (2) verbunden ist. Zur Erzielung einer völligen Dichtheit ist mindestens die Versiegelungsschicht (3) durch Extrudieren einer Folie aus einem thermoplastischen Kunststoff porenfrei ausgebildet. The invention relates to a composite film, in particular a toilet seat cover, in which at least one thin outer sealing layer (3), which is normally insoluble in water, is connected to a thicker, at least one-layer carrier layer (2) that is soluble in water. In order to achieve complete tightness, at least the sealing layer (3) is made non-porous by extruding a film made of a thermoplastic. Die Erfindung betrifft weiterhin ein Verfahren und eine Vorrichtung zur Herstellung der Folie durch Extrusion, vorzugsweise mit einer Koextrusionsdüse. The invention further relates to a method and a device for producing the film by extrusion, preferably with a coextrusion nozzle.

Inventors

  • 👤 Roland Karl Belz

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-24 13:41
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/02; B32B27/00; B32B27/12; A; A47; A47K; A47K13/00; A47K13/14; A47K13/18; B32B23/00; B32B23/04; B32B23/08; B32B27/06; B32B27/08; B32B27/18; B32B27/30; B32B27/306; B32B37/00; B32B37/14; B32B37/15; B32B37/153; B32B7/04; B32B7/06; B32B2307/00; B32B2307/70; B32B2307/716; B32B2307/7166; B32B2307/726; B32B2307/748; B32B2331/00; B32B2331/04; B32B2439/00; B32B2439/40; B32B2439/46; B32B2553/00; B32B2597/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1352; Y10T428/1362; Y10T428/139; Y10T428/1393; Y10T428/21; Y10T428/218; Y10T428/23; Y10T428/23907; Y10T428/23943; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/26; Y10T428/266; Y10T428/269

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