Variable Stitch Density Knitted Fabric for Garment Assembly

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Solution Overview

Problem

Traditional textile manufacturing processes for clothing require multiple fabrics with different properties, leading to fabric waste, long assembly times, and inefficiencies in producing garments with varied stress, friction, permeability, and stiffness requirements.

Innovation Solution

A process involving warp knitting or Raschel knitting to create a single fabric with distinct longitudinal sections of different stitch densities, allowing for areas with unique technical properties without sewing or gluing, using a fabric manufacturing machine that can produce a fabric with varying rows of stitches per unit length, and optionally applying membranes or coatings for additional properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple fabrics with different properties are used to meet different garment requirements, then the technical properties (friction, permeability, stiffness) are improved, but the manufacturing complexity and assembly time increase

Engineering Contradiction:

Improvetechnical propertiesVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple fabrics with different technical properties into a single knitted fabric by varying the stitch density in different longitudinal sections. This allows different garment areas to have different properties (friction, permeability, stiffness) without requiring separate fabric pieces, thereby reducing manufacturing complexity and assembly operations.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent applies local quality by creating specific zones within a single fabric with different stitch densities. Each longitudinal section has a predetermined number of rows of stitches per unit length tailored to specific garment areas, providing locally optimized technical properties without affecting the entire fabric.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

Engineering Contradiction:

Improvetechnical propertiesVSAvoidassembly time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent combines multiple fabric functionalities into a single knitted fabric with variable stitch density, eliminating the need to assemble multiple fabric pieces. This reduces assembly time and operations while maintaining the ability to provide different technical properties in different garment areas.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If multiple fabrics are used to create different technical properties, then the garment performance is improved, but fabric waste increases

Engineering Contradiction:

Improvetechnical propertiesVSAvoidfabric waste

Core Design Contradiction:

Adaptability or versatilityVSLoss of substance

Solution Approach 1:

The patent merges multiple fabric requirements into a single fabric production process, allowing all different technical properties to be achieved in one continuous knitted fabric. This eliminates the need to cut and join multiple fabric pieces, thereby reducing fabric waste and offcuts.

Inventive Principle:

Principle #5Merging (Combining)

4Adaptability or versatility

If adjacent areas with different Jacquard bindings are knitted, then different technical properties are achieved, but the number of rows of stitches per unit length varies after knitting

Engineering Contradiction:

Improvetechnical propertiesVSAvoidrows of stitches per unit length

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent changes the parameter of stitch density (number of rows of stitches per unit length) during the knitting process itself, rather than relying on post-knitting variations. By controlling the knitting machine to produce different stitch densities in different longitudinal sections, the patent achieves both different technical properties and consistent dimensional precision.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP3211129B1Method for making and assembling a textile item

Publication Date: 2025.01.01 GINKIO

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AI summary

A method for making a textile article such as a garment, comprising the manufacture of a run-resistant knitted fabric (E) comprising longitudinal sections (TL1-TL4), and in which: - each longitudinal section (TL1-TL4) has a predetermined number of rows of stitches per unit length, - at least two longitudinal sections (TL1-TL4) have different predetermined numbers of rows of stitches per unit length.