Ultra-light Down Padding Web with 4-Way Elasticity and High Insulation
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Solution Overview
Problem
Existing down padding technologies suffer from cold spots, reduced insulating power, poor elasticity, and hair loss due to compartment structures, which do not align with modern fashion trends and user needs.
Innovation Solution
A web for down padding composed of 25.0 to 50.0% mixed down, 9.0 to 18.0% hollow conjugate short fiber, 13.0 to 21.0% RSS short fiber, and non-stretchable low melting sheath-core composite fiber, integrated without compartment structures, providing 4-way elasticity and high insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If down padding is manufactured with a compartment structure to prevent hair loss and clumping, then hair loss and clumping are reduced, but cold spots are generated and insulating power is reduced
Solution Approach 1:
The invention extracts and removes the compartment structure from the down padding design. By eliminating the seam lines and compartments that cause cold spots, the down can be distributed continuously across the entire padding area, maintaining uniform insulation while still preventing hair loss through the integrated sheet structure
Solution Approach 2:
The invention merges the down filling with the lining and outer fabric into a single integrated sheet structure. This combining eliminates the separation between compartments and creates a continuous insulating layer, ensuring uniform temperature distribution while maintaining the benefits of structured construction
2Reliability
If down padding is manufactured with a compartment structure to prevent hair loss and clumping, then hair loss and clumping are reduced, but elasticity and restoring force are reduced
Solution Approach 1:
The invention removes the compartment structure that restricts movement and elasticity. By creating an integrated sheet without internal divisions, the down padding can stretch and recover more freely in all directions, improving elasticity while maintaining hair loss prevention through the unified construction
3Temperature
If the thickness of down padding is increased to secure high insulating power and heat retention, then insulation is improved, but the down padding does not fit recent fashion trends
Solution Approach 1:
The invention changes the structural parameters of the down padding by eliminating compartments and creating an integrated sheet structure. This allows for more efficient heat retention with reduced thickness, as the continuous down distribution eliminates thermal bridges at seam lines, achieving high insulation in a thinner profile that matches modern fashion requirements
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 solution results in ultra-light down padding with no cold spots, excellent heat retention, thermal insulation, and elasticity, along with improved drying properties and reduced down separation.
Implementation Method 1
excellent insulation, and excellent elasticity in 4-way (or multi-directions)... excellent heat retention, thermal insulation... 9.0 to 18.0% hollow conjugate short fiber, 13.0 to 21.0% RSS short fiber
Implementation Method 2
excellent insulating power by containing a large amount of air between the downs
Implementation Method 3
non-stretchable low melting sheath-core composite fiber... excellent elasticity in 4-way (or multi-directions)... 4-way elasticity and high insulation... reduced down separation
Data Source
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Figure 3A~3B
AI summary
The present invention is an invention about ultra-light down padding and a web for down padding used in its manufacture, and relates to ultra-light down padding having a thin thickness, excellent insulation and excellent elasticity in 4-way (or multi-directions). The web comprises a mixed down containing at least one selected from goose down and duck down, non-stretchable low melting sheath-core composite fiber, hollow conjugate stretch (HCT) short fiber and regular solid siliconized (RSS) short fiber.