Second-Skin Elastic Knit Hydration Preservation
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Solution Overview
Problem
Existing second-skin knitwear technologies fail to effectively preserve the hydration rate of the skin's surface layers, leading to irritation and discomfort, especially for dry skin, due to inadequate moisture retention and friction sensitivity.
Innovation Solution
A second-skin elastic knit comprising 6% to 15% polyacrylate fibers, acrylic microfibers, and at least one elastic thread, which increases hydration by at least 15% after 4 hours of continuous contact, utilizing high absorption/desorption capacity polyacrylate fibers like TOYOBO's EKS® and incorporating elastic yarn for enhanced elasticity and moisture recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional second-skin knitwear is used, then the fabric provides basic comfort and contact with skin, but it fails to preserve skin hydration and causes irritation on dry skin
Solution Approach 1:
The patent changes the moisture absorption parameter by incorporating polyacrylate fibers with specific moisture absorption capacity (at least 20% moisture recovery rate) into the knit fabric composition, transforming the fabric from hydration-neutral to hydration-preserving
Solution Approach 2:
The patent creates a composite fiber structure combining polyacrylate fibers (for moisture absorption), acrylic microfibers (for softness and comfort), and elastic threads (for stretch and fit), where each component addresses specific shortcomings of conventional single-material fabrics
2Quantity of substance
If polyacrylate fibers are added to increase moisture absorption, then skin hydration is preserved, but the fabric composition and structure become more complex
Solution Approach 1:
The patent applies local quality by assigning specific functions to specific fiber components: polyacrylate fibers are specifically designated for moisture absorption (6-15% by weight), acrylic microfibers for softness and comfort (70-80% by weight), and elastic threads for stretch (5-20% by weight), allowing each component to optimize its local function without requiring complete restructuring of the entire fabric system
3Ease of operation
If acrylic microfibers with fine count are used to enhance softness, then skin comfort is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise parameter ranges for acrylic microfibers (count less than or equal to 1.2 dtex) to ensure optimal softness and comfort while maintaining manufacturability, transforming the vague requirement of 'softness' into a quantifiable parameter that guides both material selection and production control
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 knit effectively maintains skin hydration, reducing irritation and enhancing skin suppleness by acting as a water buffer, with the polyacrylate and elastic components ensuring improved moisture retention and elasticity, as demonstrated in long-sleeved t-shirt examples.
Implementation Method 1
a synthetic fiber having excellent moisture absorption/desorption properties... This fiber can be used with other synthetic fibers to make textile articles
Implementation Method 2
a synthetic fiber having excellent moisture absorption/desorption properties... This fiber can be used with other synthetic fibers to make textile articles
Implementation Method 3
a synthetic fiber having excellent moisture absorption/desorption properties and significant elastic elongation
Data Source
AI summary
The second-skin elastic knit helps maintain the moisture level of the superficial layers of the epidermis and comprises 6% to 15% by weight of polyacrylate fibers (A), acrylic microfibers (B) with a thread count of 1.2 dtex or less, preferably at least 75% by weight of these acrylic microfibers, and at least one elastic thread (C). It can be used to make underwear such as long-sleeved T-shirts, short-sleeved T-shirts, tank tops, and tights.