Stitched Double Layer Composite Hose and Manufacturing Method Thereof

Abstract

A stitched double layer composite hose and a manufacturing method thereof are provided. The stitched double layer composite hose includes a middle fabric pipe layer (1), an inner surface composite colloid material layer (2) and an outer surface composite colloid material layer (3). The structure of the fabric pipe layer is weft-stitched double-layer unit structure. The double-layer unit structure includes an outer layer, an inner layer and stitched wefts. The inner layer includes inner layer warps and inner layer wefts; the outer layer includes outer layer warps and outer layer wefts. The stitched wefts interweave with the outer layer warps and the inner layer warps for conjoining the inner layer and the outer layer together. The fabric pipe layer weaved according to this invention solves problems of the stitched double layer composite hose in the fabric pipe layer of traditional casing, with such advantages as high flexibility, less weaving point, less loss of yarn strength and less degree of torsion. The fabric pipe layer, with special coating equipment and special coating process, can be directly processed into a stitched double layer composite hose satisfying market needs with large caliber, high dielectric strength and higher flexibility. The production process is simple, featured with extremely high utility value and worthy of promotion for production.

Description

CROSS REFERENCE OF RELATED APPLICATION[0001]This is a U.S. National Stage under 35 U.S.C 371 of the International Application PCT / CN2015 / 095244, filed Nov. 23, 2015, which claims priority under 35 U.S.C. 119(a-d) to CN 201410743605.X, filed Dec. 9, 2014; CN 201510043462.6, filed Jan. 29, 2015; and CN 201510500128.9, filed Aug. 17, 2015.BACKGROUND OF THE PRESENT INVENTIONField of Invention[0002]This invention relates to the technical field of pipelines, and specifically a stitched double layer composite hose and a manufacturing method thereof.Description of Related Arts[0003]For the stitched double layer composite hose which is presently produced at home and abroad, when producing its fabric pipe layer, the traditional weaving method is adopted to produce single-layer plain or twill hose textile, then make a double middle by latching a fabric pipe layer on the outside of another fabric pipe layer, with different calibers between inner and outer fabric pipe layers, and this double fab...

AI Technical Summary

Benefits of technology

The patent describes a new type of fiber composite hose that is strong and soft. It is made by weaving two layers of fabric together and adding a protective layer on the surface. The amount of wefts (fine thread) used in the fabric can greatly increase its pressure resistance and wear resistance. This new hose has a long service life, is flexible, and can be produced simply and efficiently. It has a unique combination of properties that make it ideal for long-range field transport of gas and liquid media.

Problems solved by technology

For the stitched double layer composite hose which is presently produced at home and abroad, when producing its fabric pipe layer, the traditional weaving method is adopted to produce single-layer plain or twill hose textile, then make a double middle by latching a fabric pipe layer on the outside of another fabric pipe layer, with different calibers between inner and outer fabric pipe layers, and this double fabric pipe layer is stiff and compactness between inner and outer layers is poor.

The composite hose produced using this fabric pipe layer has weak peel-strength, rough surface, weak resistance to high pressure, strong resistance to water-flow, poor wear resistance, and easy to slip, not satisfying market needs.

Images