Two layer fabric and articles comprising same
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Solution Overview
Problem
Conventional airbag reinforcement methods deteriorate package and folding performance while increasing costs, and airbags are often damaged by glass fragments during vehicle rollovers, compromising their protective function.
Innovation Solution
A two-layer fabric with a protrusion pattern is woven using a one-piece process, integrating a first and second fabric layer with a joint part to prevent gas leakage and enhance impact durability, tear strength, and eliminate the need for additional reinforcement layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a reinforcement fabric is backed onto an airbag through sewing or adhesion, then impact resistance is improved, but package and folding performance deteriorates and manufacturing cost increases
Solution Approach 1:
The invention merges the airbag fabric and reinforcement fabric into a single integrated two-layer fabric structure. The first fabric layer (airbag layer) and second fabric layer (reinforcement layer) are woven together in a unified fabric where the threads are interlaced during the weaving process, eliminating the need for separate sewing or adhesion steps while maintaining impact resistance and improving package performance.
Solution Approach 2:
The fabric is segmented into two distinct layers with different functions: the first fabric layer provides airbag functionality with appropriate breathability and inflation characteristics, while the second fabric layer provides reinforcement with higher density and strength. This segmentation allows each layer to optimize its specific function while the integrated structure prevents relative movement between layers.
2Reliability
If thread density is increased and densified in coarse weave structure, then airtightness is improved, but weaving efficiency decreases
Solution Approach 1:
The fabric employs local quality by creating distinct weave structures in different regions and layers. The first fabric layer has a coarser weave pattern optimized for breathability and inflation, while the second fabric layer has a finer, denser weave pattern optimized for airtightness and reinforcement. This localized optimization allows each layer to achieve its specific performance requirements without compromising overall weaving efficiency.
Data Source
Figure 1~2a
Figure 2b~2c
Figure 3a~3b
AI summary
The present application relates to a two-layer fabric and an article including the same.