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Polymer Multilayer Film

A multi-layer film and polymer technology, which is applied in the direction of synthetic resin layered products, layered products, tubular articles, etc., can solve the problems that TPU film does not have, and achieve the effect of preventing leakage and reliable protection

Active Publication Date: 2020-04-14
BUERGOFOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0035] However, these TPU films do not have a barrier against organic monomers such as, for example, styrene and / or organic solvents that can leak from the resin layer of the pipe liner construction into the lumen of the pipe liner construction

Method used

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  • Polymer Multilayer Film
  • Polymer Multilayer Film
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0085] Six different multilayer films according to the invention (Examples 1 to 8, B1 to B8) were compared with the two known from the prior art with respect to their layer structure, flexibility, mechanical properties and wear resistance. Established tubular intima (comparative examples 1 and 2, V1 and V2).

[0086] The multilayer films of Comparative Examples each consisted of five layers. The multilayer films according to the invention each consist of five layers (B1 to B4) or three layers (B5 and B6). The individual layers of the multilayer film are each directly connected to one another in the order listed subsequently. The multilayer films of Comparative Examples V1 and V2 and the multilayer films of Examples B1 to B8 were produced by blown film coextrusion.

Embodiment 1

[0092] Example 1 (multilayer film according to the invention)

[0093]

Embodiment 2

[0094] Example 2 (multilayer film according to the invention)

[0095]

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Abstract

The present invention relates to a polymeric multilayer film having at least one polyamide layer and at least one further layer made of another polymeric material, said multilayer film having high elasticity and good extensibility.

Description

technical field [0001] The present invention relates to a polymer multilayer film according to claim 1 , its use according to claim 10 , a pipe lining construction according to claim 11 and a repaired drainage pipe section according to claim 15 ( rehabilitated sewer section). Background technique [0002] The range of use of plastic films having a multilayer structure is very wide. Areas of use include, in addition to food packaging, as membrane film, as cable sheathing or in the textile and clothing industry and so-called pipe lining for trenchless sewer rehabilitation )method. In trenchless sewer restoration, excavation of the sewer section to be repaired is omitted; a flexible hose construction is introduced into the sewer section to be repaired through the already existing manhole opening, which is contained in the Curable molding compound for in-situ fabrication of new pipes in repaired sewer pipe sections. [0003] For example, a hose construction (or liner constru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/02B32B27/04B32B27/08B32B27/12B32B27/16B32B27/32B32B27/34B32B1/08F16L55/165
CPCB32B1/08B32B5/02B32B27/04B32B27/08B32B27/12B32B27/16B32B27/32B32B27/34F16L55/1656B32B2307/40B32B2307/546B32B2307/412B32B2307/71B32B2307/7265B32B2307/7242B32B2597/00B32B27/306B32B2307/414
Inventor 阿卜杜勒-卡德尔·布特里德库尔特·施塔克弗朗茨·施莱歇
Owner BUERGOFOL