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Making multilayer composite pipe for liquid conveyance

一种多层复合、金属层的技术，应用在制造多层复合管的装置,制造多层复合管领域，能够解决使用有限等问题

Active Publication Date: 2013-12-25
UPONOR INNOVATION AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, their use in drinking water systems and especially in surface mounts is very limited

Method used

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  • Making multilayer composite pipe for liquid conveyance
  • Making multilayer composite pipe for liquid conveyance
  • Making multilayer composite pipe for liquid conveyance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 An example of how to form a multilayer composite pipe is disclosed. figure 2 An example of such a tube is shown.

[0028] First, the inner layer 2 of the tube is extruded by the plastic extruder 1 . The inner layer 2 constitutes the innermost layer of the tube. Behind the plastic extruder 1 there is a calibration / cooling basin 10 . The inner layer 2 can be coated with a tie layer. Thus, in the formed pipe a connecting layer can be provided between the inner layer 2 and the metal layer 4 . It is also possible to coextrude the tie layer and the inner layer 2 . For example, if the inner layer 2 is made of a high molecular weight plastic which itself has good adhesive properties due to the grafted functional end groups, then no tie layer is required.

[0029] An inner layer 2 such as polyethylene PE, cross-linked polyethylene PEX, polypropylene PP or polybutylene-1PB can be extruded. One criterion for selecting the plastic material of the innermost layer ma...

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PUM

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Abstract

The invention relates to an apparatus for making a multilayer composite pipe. The multilayer composite pipe comprises an innermost layer (2) made of plastic. The pipe has a seamless metal layer (4) or a metal layer (4) having an axial, non-overlapping seam. The outer surface of the metal layer is treated for changing its outer appearance. Thereafter a transparent outermost layer is provided on the outer surface of the metal layer. The structure of the pipe is such that the pipe can be permanently bent to certain angles without significant spring back.

Description

technical field [0001] The invention relates to a multilayer composite pipe. [0002] The invention further relates to a method of manufacturing a multilayer composite pipe. [0003] Still further, the invention relates to an apparatus for manufacturing multilayer composite pipes. Background technique [0004] Traditional metal pipes, such as copper pipes, are used in potable water systems. However, due in part to volatile metal prices, metal tubes can be expensive and cumbersome to assemble. In addition, for example minerals in the water inside the pipe together with pH changes can cause rapid corrosion of the copper. Corrosion to the copper causes an unsightly green layer on the outer surface of the tube. Further, harmful substances can be dissolved from copper in the water inside the copper pipe. [0005] Plastic pipes, such as pipes made of cross-linked polyethylene, are widely used in potable water systems. However, the possibilities for using this tube in surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/147F16L11/12B29C47/02B29C48/09
CPCF16L9/147B29C48/09B29C48/21B32B1/08E03B7/00F16L9/14F16L11/12F16L11/14B29C48/15
Inventor 拉尔夫·温特施泰因斯特凡·穆勒
Owner UPONOR INNOVATION AB