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Preparation method of double-layer ribbed bi-color reinforced composite pipe

A color-enhanced, composite pipe technology, applied in the direction of tubular goods, other household appliances, household appliances, etc., can solve the problems of single color of composite pipe, no distinctive features, pipe deformation, etc., to achieve excellent lateral tensile force resistance, improve toughness The ability to break, the effect of improving tensile strength

Inactive Publication Date: 2016-12-07
SICHUAN AVIATION TUBE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the ring stiffness of the corrugated pipe in China is not enough, the pipe will be deformed due to the inability to withstand the external pressure during construction or function.
At present, the corrugated pipe is made of a plastic special-shaped strip without ribs in the hollow cavity on both sides of the trough (such as figure 1 As shown), and most of the existing composite pipes use a single color, and there is no distinguishing feature in appearance

Method used

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  • Preparation method of double-layer ribbed bi-color reinforced composite pipe
  • Preparation method of double-layer ribbed bi-color reinforced composite pipe
  • Preparation method of double-layer ribbed bi-color reinforced composite pipe

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: A method for preparing a double-layer ribbed double-color reinforced composite pipe, comprising the following steps:

[0036] A. Utilize the first and second extruders to continuously extrude double-layer, double-color plastic special-shaped strips with tubular protrusions containing cavities through the extrusion die;

[0037] B. The special-shaped strips obtained in step A are spirally wound side by side on the continuously rotating forming drum, so that a gap is formed between the two tubular protrusions where adjacent plastic special-shaped strips are close to each other;

[0038] C. Utilize the third and fourth extruders to jointly and continuously extrude molten plastisol into the gap described in step B;

[0039] D. Apply facing pressure to two adjacent tubular protrusions next to the gap that has been squeezed into the plastisol, so that the two tubular protrusions are tightly fused into one, and the two tubular protrusions are welded to form a hollow...

Embodiment 2

[0043] Embodiment 2: A method for preparing a double-layer ribbed double-color reinforced composite pipe, comprising the following steps:

[0044] A. Utilize the first and second extruders to continuously extrude double-layer, double-color plastic special-shaped strips with tubular protrusions containing cavities through the extrusion die;

[0045] B. The special-shaped strips obtained in step A are spirally wound side by side on the continuously rotating forming drum, so that a gap is formed between the two tubular protrusions where adjacent plastic special-shaped strips are close to each other;

[0046] C. Utilize the third and fourth extruders to jointly and continuously extrude molten plastisol into the gap described in step B;

[0047] D. Apply facing pressure to two adjacent tubular protrusions next to the gap that has been squeezed into the plastisol, so that the two tubular protrusions are tightly fused into one, and the two tubular protrusions are welded to form a hol...

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Abstract

The invention discloses a preparation method of a double-layer ribbed bi-color reinforced composite pipe. Plastic ribbed special-shaped strips are extruded through a first extruding machine and a second extruding machine together, then the strips are wound through a molding roller, then molten plastisol is extruded into the strips through a third extruding machine and a fourth extruding machine, and the double-layer ribbed bi-color reinforced composite pipe is obtained through extrusion. The double-layer ribbed bi-color reinforced composite pipe is of a double-layer bi-color structure, so that the double-layer ribbed bi-color reinforced composite pipe is more attractive, and the characteristic of conveniently recognizing the product is achieved at the same time; and meanwhile, ribs corresponding to hollow cavities in the two sides of a wave trough can improve the ring flexibility and ring stiffness of the pipe.

Description

technical field [0001] The invention relates to the technical field of pipes, in particular to a method for preparing a double-layer ribbed double-color reinforced composite pipe. Background technique [0002] At present, the corrugated pipe is usually used as a pipe buried in the ground for drainage. The external pressure it bears directly affects the performance of the pipe, and its measurement index is the ring stiffness. If the ring stiffness of the domestic corrugated pipe is not enough, the pipe will be deformed due to the inability to withstand the external pressure during construction or function. At present, the corrugated pipe is made of a plastic special-shaped strip without ribs in the hollow cavity on both sides of the trough (such as figure 1 shown), and most of the existing composite pipes use a single color, and there is no distinguishing feature in appearance. The present invention is aimed at above-mentioned situation, produces such as figure 2 The comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/20B29C47/06B29C69/00B29L23/00B29C48/32
CPCB29C48/001B29C48/21B29C48/30B29C48/32B29C69/00B29L2023/00
Inventor 谭军
Owner SICHUAN AVIATION TUBE IND CO LTD
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