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Multilayer tube and method for manufacturing same

A multi-layer tube, inner layer technology, applied in chemical instruments and methods, pipes, hoses, etc., can solve the problems of lack of flexibility and inapplicability of fluoropolymers

Pending Publication Date: 2022-05-17
SAINT GOBAIN PERFORMANCE PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, many fluoropolymers also lack flexibility, making such materials unsuitable for applications with requirements such as stress, bend radius, pressure, etc.

Method used

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  • Multilayer tube and method for manufacturing same
  • Multilayer tube and method for manufacturing same
  • Multilayer tube and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1. A multilayer tube comprising: an inner layer comprising a crosslinked fluoroelastomer rubber and an outer layer comprising a crosslinked non-fluoroelastomer rubber, wherein the The multilayer tube has a Shore A hardness of about 40 to about 90.

Embodiment 2

[0047] Embodiment 2. A method of forming a multilayer tube comprising: providing an inner layer comprising a crosslinked fluoroelastomer rubber and an outer layer comprising a crosslinked non-fluoroelastomer Rubber, wherein the multilayer tube has a Shore A hardness of about 40 to about 90.

Embodiment 3

[0048] Embodiment 3. The multilayer pipe or method of forming a multilayer pipe according to any one of the preceding embodiments, wherein the crosslinked fluoroelastomer rubber comprises at least two monomer units, wherein the monomer Units include vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, perfluoromethyl vinyl ether, ethylene, polypropylene, or combinations thereof, wherein at least one monomer unit of the fluoroelastomer rubber includes a fluorine moiety.

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Abstract

The present invention provides a multilayer tube comprising an inner layer comprising a cross-linked fluoroelastomer rubber and an outer layer comprising a cross-linked non-fluoroelastomer rubber wherein the multilayer tube has a Shore A hardness of from about 40 to about 90.

Description

technical field [0001] The present application relates generally to multilayer tubes and methods of making the same, and in particular to multilayer fluid conduits. Background technique [0002] Hoses and fittings are used in a variety of industries including cleaning and household, food processing, chemical and pharmaceutical industries. Fluid conduits with low surface energy interior surfaces are used in these industries because they are easy to clean and resistant to contamination. In particular, these industries are turning their attention to low surface energy polymers, such as fluoropolymers. However, these fluoropolymers are expensive and often have undesirable properties for certain applications. [0003] The industry uses these fluoropolymers as linings for fluid conduits. However, many fluoropolymers that are desired as interior surfaces have difficulty adhering to other surfaces. For example, delamination between fluoropolymers and substrates often occurs when...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/04B32B1/08B32B25/08B32B25/14B32B25/16B32B27/28B32B27/32C08L27/18C08L27/16C08L23/16C08K3/04C08K3/34
CPCF16L11/04B32B1/08B32B25/08B32B25/14B32B25/16B32B27/322B32B27/32B32B27/285C08K3/04C08K3/346B32B2250/02B32B2250/248B32B2597/00B32B2270/00C08L2203/18C08L27/18C08L27/16C08L23/16B29K2019/00B29K2227/00B29K2021/003B29C48/09B29C48/21B29K2105/24B29K2027/12B29K2023/16B32B2307/748B32B2307/536B32B7/022B32B25/042B32B25/12B32B2264/108B29C48/022B29K2995/007
Inventor 凯文·M·麦考利迈克尔·J·齐沃尼什查尔斯·S·戈卢布马克·F·科尔顿莉莉·雷杰拉尔德·H·林詹姆斯·勒德洛
Owner SAINT GOBAIN PERFORMANCE PLASTICS CORP