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EP0278419A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Waterproof sealing mat, essentially composed of a supporting layer, and intermediate layer of expandable clay, and a covering layer

Assignee: Naue Fasertechnik GmbH and Co KG
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Filing: 1988-02-05
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Granted: —
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Expires: 2008-02-05
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Abstract

Abstract Translated from German Es wird eine wasserundurchlässige Dichtungsmatte und ein Verfahren zu ihrer Herstellung zur Verfügung gestellt. Die Dichtungsmatte besteht aus einem Vliesstoff als Trägerschicht, einer Zwischenschicht aus quellfähigem Ton, vorzugsweise aus Natrium-Bentonit, und einer Deckschicht, die vorzugsweise ebenfalls aus einem Vliesstoff besteht, wobei alle drei Schichten miteinander in einem Nadelstuhl in üblicher Weise vernadelt wurden. Beim Befeuchten quillt der Bentonit auf und bildet die wasserundurchlässige Schicht. Verwendung findet die wasserundurchlässige Dichtungsmatte insbesondere im Wasser- und Deponiebau. A waterproof sealing mat and a process for its manufacture are provided. The sealing mat consists of a nonwoven fabric as a carrier layer, an intermediate layer made of swellable clay, preferably of sodium bentonite, and a cover layer, which preferably also consists of a nonwoven fabric, all three layers being needled in a needle chair in the usual way. When moistened, the bentonite swells and forms the waterproof layer. The waterproof sealing mat is used particularly in water and landfill construction.

Inventors

  • 👤 Georg Dr. Heerten
  • 👤 Karsten Johannssen
  • 👤 Volkhard Müller

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 16:40
CPC Classifications
B; B32; B32B; B32B9/00; B32B9/04; B32B9/047; E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; B32B5/00; B32B5/02; B32B5/022; E02D; E02D31/00; E02D31/002; E02D31/004; B32B38/00; B32B2038/0052; B32B2038/008; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2315/00; B32B2315/16; B32B2471/00; B32B2471/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/26; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/50; Y10T442/57; Y10T442/60; Y10T442/608; Y10T442/659; Y10T442/666; Y10T442/667

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