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Heat shrinkable wrap-around tape for pipeline anticorrosion

A technology of wrapping tape and anti-corrosion heat, applied in the direction of pipeline anti-corrosion/anti-rust protection, pipeline protection, damage protection, etc., can solve the problems of reduced service life, poor anti-corrosion, damaged anti-corrosion layer

Inactive Publication Date: 2015-01-14
JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after a period of use, the anti-corrosion layer of the pipeline will be damaged. In addition, the bending part of the pipeline is not suitable for the form of a sleeve, so in many occasions it is necessary to use a tape-shaped material for winding. Poor, and poor adhesion between layers, reducing the service life

Method used

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  • Heat shrinkable wrap-around tape for pipeline anticorrosion

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Embodiment Construction

[0010] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0011] like figure 1 As shown, the heat-shrinkable winding tape of the present invention has a layered structure, the first layer is a polyethylene base material layer 1, and a hot melt adhesive layer 2 and a solid epoxy coating layer 3 are sequentially arranged on the polyethylene base material layer 1. The polyethylene substrate layer 1 is high-density polyethylene that has undergone crosslinking and radiation. The polyethylene base material layer 1 is coated on the polypropylene pipe. The hot melt adhesive layer 2 has airtightness.

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Abstract

The invention discloses a heat shrinkable wrap-around tape for pipeline anticorrosion and relates to the technical field of thermal shrinkage anti-corrosion materials designed for anti-corrosion repairing of a welded junction of an embedded or overhead steel pipeline. The heat shrinkable wrap-around tape for pipeline anticorrosion is of a laminated structure, the first layer of the heat shrinkable wrap-around tape for pipeline anticorrosion is a polyethylene base material layer, a hot melt adhesive layer and a solid epoxy coating are sequentially arranged on the polyethylene base material layer, the polyethylene base material layer is made from high-density polyethylene subjected to crosslinking radiation, a polypropylene pipeline is coated with the polyethylene base material layer, and the hot melt adhesive layer has a sealing property. The heat shrinkable wrap-around tape for pipeline anticorrosion is resistant to water, acid, alkali and corrosion, simple in structure and low in manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of a heat-shrinkable anti-corrosion tape designed for anti-corrosion repair of welding joints of buried or overhead steel pipelines. Background technique [0002] The welding joints of buried or overhead steel pipelines currently used need anti-corrosion treatment, but due to the thermal expansion and contraction of steel pipelines, the heat shrinkable tape used as a filling material is required to be able to adapt to its expansion coefficient, no matter It can be completely attached to the outer wall of the steel pipe in any environment. However, after a period of use, the anti-corrosion layer of the pipeline will be damaged. In addition, the bending part of the pipeline is not suitable for the form of a sleeve, so in many occasions it is necessary to use a tape-shaped material for winding. Poor performance, and poor adhesion between layers, reducing the service life. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L58/00B32B27/06B32B27/32B32B33/00C08L23/00
CPCF16L58/16
Inventor 邢东剑叶启捷
Owner JIANGSU DASHENG HEAT SHRINKABLE MATERIALS