Load Bearing Textile Strap With Transverse Warp Spreading
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Solution Overview
Problem
Current load-bearing straps often result in excessive contact pressure due to inadequate load spreading, and variable width straps are costly and inflexible, requiring specific weaving for each application.
Innovation Solution
A load-bearing textile strap with a woven portion and a non-woven portion where the warp yarns are spread transversely to increase the strap's width, allowing for adjustable load distribution without increasing production costs, using techniques like cutting weft yarns and adhesive bonding to maintain the spread configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a cushioning pad is provided adjacent the strap, then contact pressure is reduced, but the load is not properly spread and contact pressure remains excessive
Solution Approach 1:
The patent transitions from a standard woven strap structure to a non-woven structure in the load-bearing portion, where warp yarns are spread transversely to create a wider effective contact area. This dimensional change in yarn arrangement increases the strap's width in the load-bearing zone, properly distributing load across a larger surface area and reducing contact pressure effectiveness.
Solution Approach 2:
The patent applies different structural qualities to different portions of the strap. The load-bearing portion uses a non-woven structure with spread warp yarns for maximum width and load distribution, while other portions maintain standard woven construction. This local differentiation optimizes load spreading at critical locations without compromising overall strap integrity.
2Reliability
If variable width textile straps are used to achieve better load spreading, then load spreading improves, but production cost increases and flexibility is reduced
Solution Approach 1:
The patent divides the strap into distinct functional portions: a standard woven portion for structural integrity and a non-woven load-bearing portion for load spreading. This segmentation allows each portion to be optimized for its specific function while using the same base strap material, avoiding the need for expensive custom variable width weaving and maintaining production flexibility.
Solution Approach 2:
The patent extracts the weft yarns from specific portions of the strap to create a non-woven load-bearing section. By removing the weft yarns from selected areas, the strap achieves increased width and improved load spreading in those sections without requiring complex variable width weaving patterns, thereby reducing production costs and maintaining flexibility.
3Reliability
If the strap width is increased at predefined locations by modifying weaving parameters, then load spreading improves, but the location, shape, and measurements cannot be adjusted for each specific application
Solution Approach 1:
The patent creates a dynamic strap configuration where the non-woven load-bearing portion can be positioned at different locations along the strap length and adjusted to different widths by controlling the spread of warp yarns. This dynamic adjustability allows the same base strap design to be adapted for various specific applications by modifying the position and dimensions of the non-woven portion, eliminating the need for custom weaving for each application.
Data Source
AI summary
A load bearing system including a load-bearing textile strap, including an article, such as a backpack or a climbing harness, that includes such load bearing system. The strap includes at least one woven portion and at least one non-woven portion. The woven portion has warp yarns extending along a longitudinal direction of the strap interlaced with at least one weft yarn, the woven portion having a first width. In the non-woven portion the warp yarns are spread transversely so that the non-woven portion has a second width greater than the first width of the woven portion.