Quilted Stretchable Fabric with Multi-Layer Stitching Stability
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Solution Overview
Problem
Knitted fabrics with elastic threads, such as spandex, face structural instability due to opposing properties of stretchable fabric and stitching, leading to loosened or broken stitching over time, making it difficult to produce stable quilted goods like clothing and blankets.
Innovation Solution
A quilted stretchable fabric (QSF) is created by combining a stretchy outer fabric layer with a stretch-resistant inner fabric layer, securely associated through stitching, which maintains stability even under strain, using a specific yarn mix like 94% cotton and 6% spandex for the outer layer and artificial silk for the inner layer, along with a central core layer and binding strips for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If knitted fabric with elastic threads is used to provide stretchability, then the fabric can be repeatedly stretched and returned to its original shape, but the stitching becomes structurally unstable and loosens or breaks over time
Solution Approach 1:
The invention divides the quilted fabric into multiple functional layers: an outer stretchable knit layer that provides elasticity, an inner stable layer that provides structural support, and a batting layer for insulation. This segmentation allows each layer to perform its specific function without compromising the others, resolving the contradiction between stretchability and stitching stability.
Solution Approach 2:
The invention uses composite material construction by combining different fabric types (knit fabric for stretchability, woven or non-woven fabric for stability) with batting material. This composite structure enables the outer layer to stretch while the inner layer maintains structural integrity, preventing stitching failure while preserving elastic properties.
2Reliability
If complex processing and rigorous assembly methods are used to prevent fabric stretching during manufacturing, then stitching stability is improved, but manufacturing complexity and time increase
Solution Approach 1:
The invention performs preliminary action by pre-assembling the quilted sandwich structure (outer layer + batting + inner layer) before final stitching. The layers are positioned and secured temporarily, allowing subsequent stitching to be performed on a stable configuration, which reduces manufacturing complexity while maintaining stitching stability.
Solution Approach 2:
The invention applies dynamics by using a two-stage stitching approach: initial stitching to secure layers in place, then additional stitching to reinforce stress areas. This dynamic, multi-phase manufacturing process adapts to the fabric's behavior during assembly, achieving stability without excessive complexity.
3Reliability
If special stretch sewing stitches and elastic thread are used to maintain stitching stability, then the stitching remains intact under strain, but manufacturing time and cost increase
Solution Approach 1:
The invention extracts the stability function from the stitching itself and transfers it to the inner fabric layer. By placing a stable woven or non-woven layer inside the quilted structure, the stitching only needs to hold layers together rather than provide structural stability, allowing use of standard stitching methods and faster production.
Solution Approach 2:
The inner stable layer acts as an intermediary between the stretchable outer layer and the stitching. It absorbs the mechanical stress and strain, protecting the stitching from direct load while allowing the outer layer to maintain its elastic properties. This mediator enables conventional stitching to achieve adequate stability.
4Productivity
If conventional stitching is used on stretchable fabric, then manufacturing is simpler and faster, but the stitching loosens and breaks under repeated strain
Solution Approach 1:
The invention uses composite material construction by combining different fabric types (knit fabric for stretchability, woven or non-woven fabric for stability) with batting material. This composite structure enables the outer layer to stretch while the inner layer maintains structural integrity, preventing stitching failure while preserving elastic properties.
Solution Approach 2:
The invention divides the quilted fabric into multiple functional layers: an outer stretchable knit layer that provides elasticity, an inner stable layer that provides structural support, and a batting layer for insulation. This segmentation allows each layer to perform its specific function without compromising the others, resolving the contradiction between stretchability and stitching stability.
Data Source
AI summary
The present invention provides a novel and inventive quilted stretchable fabric (QSF) provided by the combination of specific elements as described herein, which provides a structurally stable yet stretchable quilted fabric. In particular, the present invention is directed to a quilted stretchable fabric (QSF) comprising a layered combination of stretchy fabric material and stretch-resistant fabric material, and the methods of preparation thereof, which remains securely associated by stitching even when subject to the repeated strain and forces of use, e.g., stretching, pulling, and the like. Further, articles of manufacture comprising this novel and inventive fabric are also provided herein.