Antiballistic Fabric Layer with Localized Textile Density
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Solution Overview
Problem
Antiballistic fabrics with satin weave offer improved energy absorption but suffer from poor handleability and high trauma when fired upon, while laminated satin weave fabrics lose energy absorption capabilities and exhibit poor trauma values.
Innovation Solution
An antiballistic article comprising fabric layers with yarns of at least 1100 MPa strength, featuring areas with different textile densities (8% to 31% and 32% to 80%) achieved through varying weaves and yarn titers, allowing for specific distribution of textile density within the fabric layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If fabric layers with satin weave are used, then energy absorption is improved, but handleability deteriorates
Solution Approach 1:
The fabric layer incorporates different weave patterns (satin weave in first areas, linen or twill weave in second areas) to create local variations in textile density. This allows energy-absorbing satin weave regions to be concentrated where ballistic protection is needed, while handleability is maintained in other regions through different weave structures.
2Loss of energy
If fabric layers with satin weave are used, then energy absorption is improved, but trauma increases
Solution Approach 1:
By distributing satin weave areas and linen/twill weave areas in specific patterns within the fabric layer, the invention localizes energy absorption functions. The linen or twill weave areas provide structural stability that reduces trauma, while satin weave areas maximize energy absorption, achieving both goals simultaneously.
3Stability of the object's composition
If laminated fabric layers with satin weave are used, then structural stability is improved, but energy absorption capability is lost
Solution Approach 1:
The invention creates local quality variations within each fabric layer by incorporating different weave patterns in different areas. This allows the fabric to maintain overall structural stability while preserving energy absorption capabilities in specific regions, avoiding the need for lamination that would eliminate energy absorption.
4Object-affected harmful factors
If uniform high textile density is used throughout the fabric layer, then trauma resistance is improved, but energy absorption decreases
Solution Approach 1:
The fabric layer features local quality variations with different textile densities in different areas. First areas have lower textile density (8%-31%) optimized for energy absorption, while second areas have higher textile density (32%-80%) optimized for trauma resistance. This spatial distribution allows both functions to coexist.
Solution Approach 2:
The invention changes the textile density parameter across different areas of the fabric layer. By varying textile density from 8%-31% in first areas to 32%-80% in second areas, the fabric optimizes both energy absorption and trauma resistance through parameter differentiation.
Data Source
AI summary
An antiballistic article comprising a plurality of fabric layers of fibers with a strength of at least 1100 MPa according to ASTM D-885 is proposed, whereby there are at least two groups of areas with different textile densities within at least one fabric layer. Areas of a first group have a textile density of 8% to 31% according to Walz and areas of a second group have a textile density of 32% to 80% according to Walz.