Wool-Like Polyester Fabric Structure for Fluffiness and Breathability
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Solution Overview
Problem
Consumers desire high-quality wool-like fabrics at polyester prices, and existing polyester fabrics fail to replicate the fluffiness and breathability of wool fabrics effectively.
Innovation Solution
A weaving method using differentiated warp and weft yarns, including open-end spun polyester yarns and air textured semi-dull polyester yarns, with specific densities and processes like warping, sizing, doubling, drawing-in, denting, weaving, and inspecting, to create a wool-like fabric structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If polyester FDY air-deformed yarn is used with high weaving density (30-40 yarns/inch), then fabric durability is improved, but fabric fluffiness and wool-like effect deteriorate
Solution Approach 1:
The patent applies different yarn specifications to warp and weft yarns: warp yarns use 630D/192F polyester FDY air-deformed yarn for durability, while weft yarns use 6-10S air-jet spun polyester for fluffiness. This local differentiation allows each yarn type to optimize its function, resolving the contradiction between durability and fluffiness.
Solution Approach 2:
The patent changes yarn parameters (denier, spin type, texture) to achieve the desired fabric properties. By using semi-dull polyester air-textured yarn with specific denier ranges (500-700D/192F) and controlling weaving density (20-30 warp yarns/cm and 10-20 weft yarns/cm), the fabric achieves both durability and wool-like fluffiness simultaneously.
2Strength
If 45-degree twill structure is used, then fabric strength is improved, but fabric breathability and comfort deteriorate
Solution Approach 1:
The patent employs unrestricted organizational structure that allows dynamic adjustment of warp and weft yarn arrangements. The differentiated latitude and longitude density (20-30 warp yarns/cm and 10-20 weft yarns/cm) creates a flexible fabric structure that maintains strength while improving breathability and comfort, moving away from fixed twill patterns.
3Ease of manufacture
If polyester yarn is used instead of wool, then manufacturing cost is reduced, but fabric comfort and softness deteriorate
Solution Approach 1:
The patent creates a polyester fabric that copies the physical properties of wool through specific yarn selection and weaving techniques. By using air-textured polyester yarns with controlled denier and spin characteristics, the fabric replicates wool's fluffiness, breathability, and comfort, achieving quality equivalence at lower cost.
Solution Approach 2:
The patent combines different polyester yarn types (FDY air-deformed and air-jet spun) with specific physical treatments to create a composite fabric structure that emulates wool properties. The combination of warp and weft yarns with different characteristics produces a fabric that achieves both cost-effectiveness and wool-like comfort.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method transforms polyester fibers into hollow fibers with larger gaps, achieving a fluffy and woolen effect, allowing consumers to enjoy full wool fabric benefits at polyester prices.
Implementation Method 1
the semi-dull polyester yarns are air textured yarns... the air textured yarns with a specification of 500-700 denier (D) per 192 filaments (F)... changing polyester fibers into air textured yarns, an internal structure of the fibers is altered, and the gaps between fibers become larger
Data Source
AI summary
A wool-like fabric includes warp yarns and weft yarns, the warp yarns include polyester yarns arranged along a warp direction, the weft yarns include semi-dull polyester yarns arranged along a weft direction, and the warp yarns and the weft yarns are woven into the wool-like fabric with a fabric structure. The warp yarns are open-end spun polyester yarns in a range of 6-10 counts, and the semi-dull polyester yarns are the air textured yarns with a specification of 500-700D/192F. A weaving method of the wool-like fabric changes an internal structure of polyester fibers by converting them into hollow fibers, resulting in larger gaps between fibers and a fluffy and woolen effect. Through the above process, ordinary polyester fibers have the effect of full wool fabric, truly allowing consumers to enjoy full wool fabric products at the price of polyester.