Warp-Knitted Fabric Structural Elements for Adsorptive Filtering

Solution Overview

Problem

Prior art protective suits with simple textile wovens as backing materials often fail to meet the high mechanical stability requirements for breaking and tearing forces, leading to potential chemical exposure under extreme conditions, such as military deployments or chemical manufacturing operations.

Innovation Solution

A process for improving the breaking and tear strength of warp-knitted fabrics used in adsorptive filtering materials by configuring a portion of the structural elements, such as floats, to extend over multiple wales, enhancing the mechanical properties through a 'cable effect' that counteracts tear propagation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If simple textile wovens are used as backing material, then ease of manufacture is improved, but breaking strength and tear strength are insufficient

Engineering Contradiction:

Improveease of manufactureVSAvoidbreaking strength

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The patent uses composite materials by combining textile fibers (warp and weft) with synthetic floats to create a warp-knitted fabric that integrates the ease of textile manufacturing with enhanced mechanical strength. The floats are integrated into the knitting structure itself, creating a composite construction that achieves both manufacturability and superior breaking strength.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent applies segmentation by dividing the fabric structure into distinct functional elements: warp threads providing longitudinal strength, weft threads providing transverse structure, and floats providing additional reinforcement. This segmented approach allows each component to be optimized for its specific function while maintaining overall manufacturability.

Inventive Principle:

Principle #1Segmentation

2Ease of manufacture

If simple textile wovens are used as backing material, then ease of manufacture is improved, but tear strength is insufficient

Engineering Contradiction:

Improveease of manufactureVSAvoidtear strength

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The patent uses composite materials by combining textile fibers (warp and weft) with synthetic floats to create a warp-knitted fabric that integrates the ease of textile manufacturing with enhanced mechanical strength. The floats are integrated into the knitting structure itself, creating a composite construction that achieves both manufacturability and superior breaking strength.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent applies segmentation by dividing the fabric structure into distinct functional elements: warp threads providing longitudinal strength, weft threads providing transverse structure, and floats providing additional reinforcement. This segmented approach allows each component to be optimized for its specific function while maintaining overall manufacturability.

Inventive Principle:

Principle #1Segmentation

3Strength

If structural elements extend over multiple wales, then breaking strength and tear strength are significantly improved, but device complexity increases

Engineering Contradiction:

Improvebreaking strengthVSAvoiddevice complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The patent applies dynamics by creating a flexible knitting structure where floats can extend variable distances over multiple wales. This dynamic configuration allows the fabric to adapt its strength characteristics based on the specific knitting pattern and float arrangement, achieving high strength without requiring a complex, rigid structure.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies local quality by varying the float extension lengths and positions at different locations within the fabric. Rather than using a uniform complex structure throughout, the design incorporates localized float extensions over specific wales where additional strength is needed, while maintaining simpler structures elsewhere, thus optimizing strength without maximizing overall complexity.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS8268736B2Process for improving the breaking strength and/or tear strength of adsorptive filtering materials

Publication Date: 2012.09.18 BLUCHER GMBH

AI summary

The present invention relates to a process for improving the breaking strength and/or tear strength of a warp-knitted fabric, in particular for use in adsorptive filtering materials having a protective function against chemical poisons and/or warfare agent materials, the process comprising providing the warp-knitted fabric with a multiplicity of wales, a multiplicity of courses and a multiplicity of structural elements. In accordance with the present invention, a portion of the structural elements is configured as to each extend over a plurality of wales, so that in the event of a breaking stress on the warp-knitted fabric or the action of a breaking force the structural elements which each extend over a plurality of wales are pushed together or bundled and an improved breaking force results.