Inflatable product
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Solution Overview
Problem
Inflatable products face issues with deformation due to high internal air pressures, especially when using PVC materials, which are not environmentally friendly and increase costs, and alternative materials like cotton fabrics cannot be fastened to high-frequency welded sheets.
Innovation Solution
Inflatable products are designed with a tensioning member comprising a woven fabric connected to a connecting member, which is sewn to the chamber wall, using materials like PVC, TPU, PET, EVA, or nylon for the covering layers and high-tensile-strength fibers for the fiber layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If PVC sheet material is used for tensioning members in high air-pressure inflatable products, then the material can be fastened to high-frequency welded sheets, but the material deforms due to creep behavior under high tensile force
Solution Approach 1:
The patent applies composite materials by combining a fiber layer (made of high-tensile-strength materials like nylon, polyester, or aramid) with covering layers (made of flexible materials like PVC, TPU, or rubber). This composite structure allows the tensioning member to maintain both fastening capability and high tensile strength, preventing deformation under high air pressure while enabling reliable connection to the inflatable chamber wall.
2Strength
If laminated material with fabric layer is used to improve deformation resistance, then creep behavior is reduced, but material costs increase and PVC consumption increases
Solution Approach 1:
The patent uses a composite material structure with a fiber layer sandwiched between covering layers. The fiber layer provides high tensile strength and deformation resistance, while the covering layers provide flexibility and connection capability. This design reduces the need for excessive PVC material by utilizing the superior mechanical properties of the fiber layer, thereby lowering both deformation resistance requirements and PVC consumption.
3Strength
If cotton fabrics or chemical fabrics are used for tensioning members, then tensile properties are excellent, but these fabrics cannot be fastened to high-frequency welded sheets
Solution Approach 1:
The patent creates a composite material where a fiber layer (made of excellent tensile materials like cotton, chemical fabrics, nylon, or aramid) is combined with covering layers (made of flexible materials compatible with high-frequency welding). This composite structure allows the tensioning member to maintain excellent tensile properties from the fiber layer while gaining fastening capability through the covering layers that can be welded to the inflatable chamber wall.
4Strength
If more PVC material is used to reduce deformation, then deformation resistance improves, but material costs increase and environmental impact worsens
Solution Approach 1:
The patent employs composite materials with a fiber layer providing high tensile strength and deformation resistance, reducing the need for excessive PVC material. The fiber layer (made of materials like nylon, polyester, or aramid) offers superior mechanical properties with lower environmental impact compared to PVC. This composite approach maintains deformation resistance while reducing PVC consumption and associated environmental harm.
Data Source
AI summary
An inflatable product is provided, comprising: an inflatable chamber defined by a chamber wall; a tensioning member disposed in the inflatable chamber; and a connecting member disposed in the inflatable chamber. The connecting member includes a covering layer and a fiber layer disposed between the chamber wall and the covering layer. The tensioning member is sewn to the connecting member, and the connecting member is connected to the chamber wall.