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EP0118683A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Multi-layered hollow panel and its method of manufacture

Assignee: Roehm GmbH Darmstadt
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Filing: 1984-01-20
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Granted: —
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Expires: 2004-01-20
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Abstract

Abstract Translated from German In einer mehrschichtig koextrudierten Stegplatte mit verminderter Schlagempfindlichkeit, enthaltend zwei im wesentlichen ebene Außenwände (1,2) und diese einstückig verbindende Stege (3), besteht die tragende Schicht (4) der Außenwand (1) zu mehr als der Hälfte ihrer Gesamtdicke aus einem Acrylglas und an der innenliegenden Seite der Acryglasschicht aus einer damithaftend verbundenen dünneren Innenschicht (5) aus einem Kunststoff mit einer höheren Bruchdehnung, beispielsweise einem Polycarbonatkunststoff. In a multi-layer co-extruded multi-wall sheet with reduced impact sensitivity, containing two essentially flat outer walls (1, 2) and webs (3) integrally connecting them, the load-bearing layer (4) of the outer wall (1) consists of more than half of its total thickness Acrylic glass and on the inner side of the acrylic glass layer from a thinner inner layer (5) which is bonded together and made of a plastic with a higher elongation at break, for example a polycarbonate plastic.

Inventors

  • 👤 Klaus Ernst Pöhlmann
  • 👤 Heinz Dr.-Ing. Vetter
  • 👤 Ernst Friederich

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-25 15:36
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/12; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/304; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/12; B32B27/30; B32B27/308; B32B27/36; B32B27/365; B32B3/00; B32B3/26; B32B7/00; B32B7/04; B32B7/12; E; E04; E04C; E04C2/00; E04C2/54; E04C2/543; B29C48/001; B29C48/0017; B29C48/07; B29C48/09; B29C48/11; B29C48/22; B29K; B29K2033/00; B29K2069/00; B29L; B29L2024/00; B29L2031/00; B29L2031/60; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24744; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/26; Y10T428/31504; Y10T428/31507; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935

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