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Production method of PE-RT oxygen blocking pipe

A manufacturing method, PE-RT technology, applied to pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve problems such as uneven distribution of oxygen barrier layer, lack of shading properties of pipe materials, unstable oxygen barrier rate of pipe materials, etc. , to achieve the effects of stable oxygen barrier rate, uniform outer layer thickness, improved production efficiency and appearance

Inactive Publication Date: 2008-12-03
AKAN ENTERPRISE GROUP SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to propose a manufacturing method of an oxygen-barrier pipe, so as to solve the problem that the oxygen-barrier layer of the outer layer of the existing PE-RT oxygen-barrier pipe and the plastic layer of the inner layer cannot be well combined, and the oxygen-barrier layer The distribution is uneven, the oxygen barrier rate of the pipe is unstable, and the pipe has no light-shielding properties

Method used

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  • Production method of PE-RT oxygen blocking pipe

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see figure 1 . Heat Mitsui 528 to 210°C, after melting, add red color masterbatch according to the weight ratio of Mitsui 528 and red color masterbatch is 1.23, and mix evenly. The resulting glue is then coated on the PE-RT layer 1 as the inner layer to form an adhesive layer as the middle layer 2 . Immediately thereafter, an oxygen barrier material EVOH is coated on the adhesive layer 2 to form an oxygen barrier layer 3 as an outer layer. After the glue is cooled and solidified, it is made into a PE-RT oxygen barrier tube.

Embodiment 2

[0023] see figure 1 . Heat Mitsui 528 to 215°C, after melting, add red color masterbatch according to the weight ratio of Mitsui 528 and red color masterbatch is 1.20, and mix evenly. The resulting glue is then coated on the PE-RT layer 1 as the inner layer to form an adhesive layer as the middle layer 2 . Immediately thereafter, an oxygen barrier material EVOH is coated on the adhesive layer 2 to form an oxygen barrier layer 3 as an outer layer. After the glue is cooled and solidified, it is made into a PE-RT oxygen barrier tube.

Embodiment 3

[0025] see figure 1 . Heat Mitsui 528 to 220°C, after melting, add red color masterbatch according to the weight ratio of Mitsui 528 to red color masterbatch is 1.25, and mix well. The resulting glue is then coated on the PE-RT layer 1 as the inner layer to form an adhesive layer as the middle layer 2 . Immediately thereafter, an oxygen barrier material EVOH is coated on the adhesive layer 2 to form an oxygen barrier layer 3 as an outer layer. After the glue is cooled and solidified, it is made into a PE-RT oxygen barrier tube.

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Abstract

The invention relates to a production method of an oxygen resistant pipe, particularly to a production method of a PE-RT oxygen resistant pipe. The invention production method provides an improvement proposal on the bonding layer of the PE-RT oxygen resistant pipe, that is, a colored master batch is added to high-temperature melted plastics. The inventive production method solves the problems of the prior PE-RT oxygen resistant pipe, including that the external oxygen resistant layer can not well bind with the internal plastic layer, the distribution of the oxygen resistant layer is not uniform, the oxygen resistant rate of the pipe is not stable, the pipe has not light proofness, etc.

Description

technical field [0001] The invention relates to a method for manufacturing an oxygen-resistant tube, in particular to a method for manufacturing a PE-RT oxygen-resistant tube. Background technique [0002] As the pipeline system has higher and higher requirements on the oxygen barrier rate of pipes, various oxygen barrier pipes have emerged as the times require. At present, oxygen barrier pipes mainly include various composite pipes, oxygen barrier PE-X, oxygen barrier PE-RT, etc. Among them, oxygen barrier PE-RT and oxygen barrier PE-X are mainly used in the floor heating industry. [0003] The appearance color of conventionally used oxygen barrier PE-X and oxygen barrier PE-RT is generally the original color, which is mainly determined by the production process, that is, the material is added to the color masterbatch, and the production process of the outer coating glue and oxygen barrier material is used. Oxygen tubing. The oxygen barrier layer of this kind of pipe cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14
Inventor 郑立克
Owner AKAN ENTERPRISE GROUP SHANGHAI
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