Alpaca Fiber Batting Composition for Carding and Loft Retention
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Solution Overview
Problem
Existing insulating compositions using full staple length alpaca fibers face issues with locking up carding machines and losing loft, resulting in inefficient insulation performance.
Innovation Solution
A composition comprising 40.0 to 85.0 wt % alpaca fibers of 40.0 to 70.0 mm length, blended with 10.0 to 20.0 wt % bicomponent fibers and 5.0 to 40.0 wt % polyester fibers, processed through blending, combing, carding, lapping, and needling to form a batting that retains loft and provides superior insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If full staple length alpaca fibers are used in insulating compositions, then the insulation material can be produced, but the carding machines lock up and the loft is lost
Solution Approach 1:
The alpaca fibers are segmented into shorter lengths (40-70mm) rather than using full staple length, which prevents the fibers from locking up carding machines while maintaining sufficient loft and insulation properties
Solution Approach 2:
The fiber length parameter is changed from full staple length to a specific range of 40-70mm, which optimizes both manufacturability and insulation performance by preventing machine locking while preserving loft
2Ease of manufacture
If alpaca fibers are cut to shorter length (40-70mm), then carding machine operation is improved, but the insulation performance may be reduced
Solution Approach 1:
The patent creates a composite fiber composition combining alpaca fibers (40-70mm) with bicomponent fibers and polyester fibers, where the shorter alpaca fibers provide manufacturability while the composite structure maintains insulation performance through synergistic fiber properties
Solution Approach 2:
Different fiber types with specific properties are used in localized roles within the composition - alpaca fibers provide natural insulation, bicomponent fibers provide structural stability, and polyester fibers enhance durability, with each component optimized for its specific function
3Reliability
If the batting weight is increased to improve insulation, then the insulation performance improves, but the lightweight characteristic is lost
Solution Approach 1:
The fiber length parameter is optimized to 40-70mm for alpaca fibers, which provides the optimal balance between insulation performance and lightweight characteristics, achieving high insulation without excessive weight
Solution Approach 2:
The composite fiber composition allows for optimized weight distribution where each fiber type contributes its specific properties - alpaca for natural insulation, bicomponent for structure, and polyester for durability - achieving high insulation performance with minimal weight
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 a lightweight, high-loft batting with enhanced insulation properties, maintaining structural integrity and durability, suitable for use in outerwear and bedding.
Implementation Method 1
a heating step, wherein the matte is heated to melt at least one component of the bicomponent fibers to generate a batting
Data Source
AI summary
An insulating fill material composition for use in outerwear, sleeping bags, bedding, and the like includes 40.0 to 85.0 wt % alpaca fibers, 10.0 to 20.0 wt % bicomponent fibers, and 5.0 to 40.0 wt % polyester fibers. The alpaca fibers have a length of 40.0 to 70.0 mm. The bicomponent fibers have a length of 40.0 mm to 60.0 mm and a linear mass density of 0.11 to 0.33 mg/m. The polyester fibers have a length of 40.0 mm to 60.0 mm and a linear mass density of 0.22 to 0.44 mg/m. Blending, combing, carding, and lapping of the alpaca fibers, the bicomponent fibers, and the polyester fibers forms a matte, which when needled and heated forms a batting having a weight of 50.0 to 400.0 g/m2.