Stitched Double-Layer Composite Hose for Pressure and Peel Strength
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Solution Overview
Problem
Traditional stitched double layer composite hoses have issues with weak peel-strength, rough surface, poor high-pressure resistance, and low water-flow resistance, along with poor wear resistance and a tendency to slip, failing to meet market demands.
Innovation Solution
A stitched double layer composite hose with a fabric pipe layer featuring a double-layer unit structure with interwoven stitched wefts, where the inner and outer layers are woven using a specific pattern of warps and wefts, and coated with a rubber compound/thermoplastic elastomer, enhancing the hose's structural integrity and resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional weaving method is adopted to produce single-layer plain or twill hose textile with double middle, then the fabric pipe layer can be manufactured, but the resulting composite hose has weak peel-strength, rough surface, and poor compactness between layers
Solution Approach 1:
The patent applies composite materials by combining fabric pipe layer with rubber compound/thermoplastic elastomer coating layer to create a double-layer composite structure. The fabric layer provides structural strength while the coating layer provides flexibility and sealing, resolving the contradiction between ease of manufacture and reliability by integrating multiple material properties into a unified composite structure.
Solution Approach 2:
The patent merges the fabric pipe layer and the coating layer into a single integrated composite hose structure through coating and curing processes. This merging ensures strong bonding between layers, improving peel-strength and compactness while maintaining manufacturing feasibility through established coating techniques.
2Ease of manufacture
If traditional double fabric pipe layer structure is used, then the hose can be produced, but it exhibits poor resistance to high pressure and strong resistance to water-flow
Solution Approach 1:
The patent uses composite materials where the fabric pipe layer provides structural strength for pressure resistance, while the rubber compound/thermoplastic elastomer coating layer provides flexibility and water-flow resistance. This composite structure resolves the contradiction by assigning different functional requirements to different material layers.
Solution Approach 2:
The patent applies local quality by giving different properties to different layers: the fabric layer is designed for structural strength and pressure resistance, while the coating layer is designed for flexibility and water-flow resistance. Each layer is optimized for its specific function, resolving the contradiction between ease of manufacture and high-pressure resistance.
3Device complexity
If traditional stitching method is used to join inner and outer layers, then the double-layer structure can be formed, but the surface is rough and wear resistance is poor
Solution Approach 1:
The patent uses composite materials where the coating layer provides a smooth, wear-resistant surface that protects the underlying fabric structure. This resolves the contradiction by allowing the fabric layers to maintain their structural function while the coating layer addresses surface quality and wear resistance.
Solution Approach 2:
The coating layer acts as an intermediary between the fabric pipe layer and the external environment, providing a smooth surface that reduces wear and improves surface quality. This intermediary layer protects the fabric structure from direct contact with abrasive elements, resolving the contradiction between device complexity and surface quality.
4Ease of manufacture
If traditional latching method is used to create double middle, then the fabric pipe layer can be assembled, but the hose is stiff and has poor flexibility
Solution Approach 1:
The patent uses composite materials where the rubber compound/thermoplastic elastomer coating layer provides flexibility and elasticity, counteracting the stiffness introduced by the fabric pipe layer structure. This resolves the contradiction by balancing structural rigidity with material flexibility in the composite system.
Solution Approach 2:
The patent changes the physical and chemical parameters of the coating material (rubber compound/thermoplastic elastomer) to achieve optimal flexibility and elasticity. By adjusting composition, thickness, and curing parameters, the coating layer provides the necessary flexibility to counteract the stiffness of the fabric structure, resolving the contradiction between ease of manufacture and ease of operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The improved hose exhibits enhanced pressure resistance, wear resistance, and flexibility, with a high-strength outer layer protecting the inner layer, suitable for long-range transport of gas and liquid media, addressing the limitations of traditional hoses.
Implementation Method 1
coated with a rubber compound/thermoplastic elastomer, enhancing the hose's structural integrity and resistance
Implementation Method 2
the stitched wefts interweave with the outer layer warps and the inner layer warps, for conjoining the inner layer and the outer layer together
Data Source
AI summary
A stitched double layer composite hose is provided. The stitched double layer composite hose includes a middle fabric pipe layer, an inner surface composite colloid material layer and an outer surface composite colloid material layer. 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 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.