Steel strip reinforced polyethylene helically corrugated tube and production method thereof

A technology of polyethylene spiral and bellows, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of poor bonding, potential safety hazards, easy breakage, etc., achieve stable shape and quality, increase Adhesive strength, the effect of increasing the contact surface

Inactive Publication Date: 2014-04-02
TIANJIN SHENGXIANG PLASTIC PIPE IND
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Problems solved by technology

However, due to the great difference in the yield strength of the steel strip material during the production process, the same bending degree cannot guarantee that the steel strip reaches the yield limit, so that there is a ce

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  • Steel strip reinforced polyethylene helically corrugated tube and production method thereof

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[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] Reference figure 1 , The plastic raw material polyethylene is extruded by the inner extruder and welded to the inner tube layer 1. The pretreated steel belt is pressed into a V-shaped steel belt using a bending machine, and the steel mesh 2 is welded to The two legs of the V-shaped steel belt 3, and the flat surface of the steel mesh 2 and the two legs of the V-shaped steel belt 3 are coated with resin, and then the coated steel belt with the steel mesh is bent and wound inside using a bending machine For the outer layer of the pipe 1, the outer layer extruder is used to fuse the inner pipe and the outer layer of the V-shaped steel belt to form the outer polyethylene layer 4.

[0016] The embodiments of the present invention are illustrative, not restrictive. Therefore, the present invention is not limited to the embodiments described in the specific embod...

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Abstract

The invention relates to a steel strip reinforced polyethylene helically corrugated tube and a production method thereof. A steel screen is welded at the feet of a V-shaped steel strip, a polyethylene layer is wound and coated with the bent steel strip, and the outer part of the steel strip is coated with the polyethylene layer. The production method comprises the steps of (1) molding of an inner layer, (2) compression molding of the steel strip, (3) welding of the steel screen through the steel strip, (4) bending and winding of the steel strip with a steel wire screen, and (5) molding of an outer layer. The steel strip reinforced polyethylene helically corrugated tube has the beneficial effects that the steel strip has certain spring-back stress in the compression process, so that after the steel screen is welded to the steel strip, the contact area of the steel strip and the outer side of a polyethylene tube is increased, the adhesion strength is improved, the product yield is improved, the shape and quality of a product are stabilized, and the safety of the product is ensured.

Description

technical field [0001] The invention relates to a plastic composite pipe and its production technology, in particular to a steel belt reinforced polyethylene spiral corrugated pipe with a steel mesh and its production method Background technique [0002] Because the steel belt reinforced polyethylene spiral corrugated pipe has the characteristics of high rigidity, high strength, corrosion resistance, wear resistance and strong flexibility, it is widely used in the field of drainage as a cost-effective steel-plastic composite pipe. However, due to the great difference in the yield strength of the steel strip material in the production process, the same bending degree cannot guarantee that the steel strip reaches the yield limit, so that there is a certain rebound stress in the steel strip, which makes the pipe forming difficult and easy to break , in line with poor bonding, prone to delamination problems, there are certain safety hazards during installation and use. Content...

Claims

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Application Information

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IPC IPC(8): F16L9/16
CPCF16L9/165
Inventor 闫晓飞林静
Owner TIANJIN SHENGXIANG PLASTIC PIPE IND
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