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EP0477797A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Biaxially oriented polyolefine multilayer film, sealable on both sides, having very good optical properties

Assignee: Treofan Germany GmbH and Co KG
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Filing: 1991-09-20
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Granted: —
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Expires: 2011-09-20
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Abstract

Abstract Translated from German Es wird eine beidseitig siegelbare, transparente, coextrudierte Polyolefinmehrschichtfolie beschrieben mit einer Basisschicht im wesentlichen aus Propylenpolymeren und Deckschichten im wesentlichen aus siegelbaren Olefinpolymeren. Das Propylenpolymere der Basisschicht ist peroxidisch abgebaut ist, wobei sein Abbaufaktor A im Bereich von 3 - 10 liegt. Das siegelbare Olefinpolymere der Deckschichten ist ein Ethylen-Propylen-Copolymerisat mit einem Ethylengehalt im Bereich von 2 bis 8 Gew.-% das auch peroxidisch abgebaut ist. Sein Abbaufaktor A liegt im Bereich von 3 bis 15 . A transparent, coextruded polyolefin multilayer film which can be sealed on both sides is described with a base layer consisting essentially of propylene polymers and cover layers consisting essentially of sealable olefin polymers. The propylene polymer of the base layer is degraded peroxidically, its degradation factor A being in the range from 3 to 10. The sealable olefin polymer of the outer layers is an ethylene-propylene copolymer with an ethylene content in the range from 2 to 8% by weight, which is also degraded peroxidically. Its degradation factor A is in the range from 3 to 15.

Inventors

  • 👤 Ursula Dr. Murschall
  • 👤 Herbert Dr. Peiffer
  • 👤 Gunter Dr. Schlögl

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 22:11
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B27/16; B32B27/18; B32B37/00; B32B37/14; B32B37/15; B32B37/153; B32B38/00; B32B38/0008; B29; B29K; B29K2995/00; B29K2995/0018; B29K2995/0022; B32B38/0012; B32B2038/0028; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/40; B32B2307/412; B32B2310/00; B32B2310/04; B32B2310/0445; B32B2310/14; B32B2323/00; B32B2323/10; B32B2553/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31652; Y10T428/31667; Y10T428/31678; Y10T428/31855; Y10T428/31909; Y10T428/31913

Claims Analysis

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References Cited (Backward Citations)

EP0008904A2 Cited
US4419411A Cited
EP0164493A2 Cited
EP0194588A2 Cited
DE3832880A1 Cited

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