Moisture-absorbing heat-generating quick-drying moisture-retaining thermal fabric and manufacturing method thereof
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Solution Overview
Problem
Current knitted dress fabrics face challenges with poor wet permeability, moisture liberation, and quick-drying performance, leading to a clammy feeling and poor conformability, especially in thermal underwear, due to limitations in moisture and gas permeability, and the use of materials like polyester fibers which result in low elasticity and pilling.
Innovation Solution
A moisture-absorbing heat-generating quick-drying moisture-retaining thermal fabric is developed using a specific combination of yarns, including regenerated cellulose fiber, modified polyester fiber with a non-circular cross section, cotton, and polyurethane fiber, structured in layers to enhance moisture absorption, transfer, and retention, with a knitting method that optimizes the fabric's structure for comfort and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional thermal knitted fabric is made using polyester fiber and air layer silk to meet heat preservation requirements, then heat preservation rate reaches 30%, but elasticity is poor and pilling occurs
Solution Approach 1:
The patent uses a composite yarn structure combining polyester fiber (for heat preservation), spandex elastomeric yarn (for elasticity), and conductive fiber (for anti-static function). This multi-material composite resolves the contradiction by assigning different functions to different materials within the same fabric system, achieving both thermal insulation and mechanical performance.
Solution Approach 2:
The patent applies different yarn types to different layers of the fabric. The inner layer uses yarn with higher moisture absorption for comfort, while the outer layer uses yarn optimized for warmth and durability. This local differentiation allows each layer to perform its specific function optimally without compromising overall fabric performance.
2Ease of manufacture
If conventional fabric uses standard circular cross-section polyester fiber, then manufacturing is simple, but moisture absorption and quick-drying performance are poor
Solution Approach 1:
The patent changes the geometric parameter of the polyester fiber from circular cross-section to multi-lobed cross-section. This parameter change increases the surface area to volume ratio, enhancing moisture absorption capacity while maintaining the fiber's structural integrity and compatibility with standard manufacturing processes.
Solution Approach 2:
The multi-lobed cross-section structure creates internal voids and increased surface area within the fiber, effectively creating a porous structure that enhances moisture absorption and quick-drying performance without requiring complex manufacturing processes.
3Quantity of substance
If fabric uses high moisture absorption materials like cotton and regenerated cellulose, then moisture absorption is good, but wet permeability and moisture liberation are poor
Solution Approach 1:
The patent divides the fabric into multiple functional layers with different moisture management characteristics. The inner layer uses high moisture absorption materials to draw sweat away from the body, while the outer layer uses hydrophobic materials to facilitate moisture liberation and evaporation. This segmentation resolves the contradiction by separating the absorption and liberation functions into different layers.
Solution Approach 2:
The patent introduces a middle layer with wick structure that acts as an intermediary between the inner moisture-absorbing layer and the outer moisture-liberating layer. This wick structure facilitates the transfer of moisture from the inner to outer layer, enabling both absorption and rapid liberation without direct contact between opposing functional materials.
4Speed
If fabric is designed for quick-drying performance with high evaporation rate, then moisture management improves, but heat retention decreases
Solution Approach 1:
The patent applies different functional properties to different layers: the inner and middle layers are optimized for moisture absorption and transport with higher evaporation rates, while the outer layer is optimized for heat retention with lower evaporation rate. This local quality differentiation allows the fabric to achieve both quick-drying performance where needed and heat retention where required.
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 fabric exceeds national standards in moisture absorption and heat retention, providing superior comfort and quick-drying performance, with improved elasticity and resistance to pilling, ensuring effective moisture management and warmth retention.
Implementation Method 1
the second yarn is a modified polyester fiber yarn having a non-circular cross section
Implementation Method 2
moisture-absorbing heat-generating quick-drying moisture-retaining thermal fabric
Data Source
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AI summary
The present invention provides a moisture-absorbing heat-generating quick-drying moisture-retaining thermal fabric and manufacturing method thereof. The fabric is woven by a first yarn, a second yarn, a third yarn an a fourth yarn. The first yarn is a regenerated cellulose fiber-type blended yarn made by blending regenerated cellulose fiber with one or more linen, wool or cashmere and cotton fiber, or is a regenerated cellulose long fiber yarn or regenerated cellulose staple fiber yarn. The second yarn is a modified polyester fiber yarn having a non-circular cross section. The third yarn is a cotton fiber-type blended yarn made by blending cotton fiber with one or two of polyester staple fiber or polyacrylonitrile fiber, or is all-cotton yarn. The fourth yarn is polyurethane fiber yarn. The fabric has a moisture-absorption heat-generation value above the national standard, and good moisture-absorption and quick-drying properties, and a thermal value meeting the national standard, and also has a comfortable resilience, and a soft, smooth feel of the surface contacting the skin. In addition, the manufacturing method has a simple process and is easy to operate.