Wool Pile Fabric Finishing for Sheepskin-Like Softness
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Solution Overview
Problem
The high cost and limited supply of natural sheepskin products, driven by demand and quality variations, necessitate an alternative that replicates the desirable qualities of sheepskin.
Innovation Solution
A method to create a natural wool, deep pile fabric that closely resembles shearling by processing wool fibers with a textile scrim, involving steps like rough shearing, polishing, and conditioning to achieve the softness and performance characteristics of natural sheepskin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If natural sheepskin is used to manufacture products, then the product has excellent insulating and breathable qualities, but the cost increases and supply is limited
Solution Approach 1:
The patent creates an artificial wool pile fabric that copies the structure and performance characteristics of natural sheepskin. The fabric replicates the insulating and breathable qualities through its deep pile construction and natural wool fiber composition, providing a substitute that mimics the original material's functional properties without being limited by natural sheepskin supply constraints
Solution Approach 2:
The invention combines natural wool fibers with a textile scrim base to create a composite material that achieves sheepskin-like performance. The composite structure integrates the insulating properties of wool with the structural stability of the scrim, producing a material that replicates natural sheepskin's functional characteristics while being manufacturable at scale
2Reliability
If natural sheepskin is used to manufacture products, then the product has excellent insulating and breathable qualities, but the cost increases
Solution Approach 1:
The patent employs a cost-effective artificial fabric construction using readily available natural wool fibers and standard textile scrim materials. By using these more economical components instead of expensive natural sheepskin, the invention achieves comparable insulating and breathable performance at a lower manufacturing cost, making the product more economically viable
Solution Approach 2:
The invention modifies the structural parameters of the fabric by creating a deep pile configuration on a scrim base, which changes the material's thermal and respiratory properties to match natural sheepskin. This parameter adjustment allows the use of cheaper materials while maintaining the desired insulating and breathable performance characteristics
3Productivity
If wool pile fabric is created to replace shearling, then the supply increases and cost reduces, but the wool pile is coarse, bristly and abrasive
Solution Approach 1:
The patent applies different quality characteristics to different parts of the fabric structure. The textile scrim base provides structural stability and durability, while the wool pile surface is engineered to provide softness and comfort. This local differentiation of material properties allows the fabric to achieve both supply scalability and skin-friendly softness, eliminating the coarseness problem of conventional wool pile fabrics
4Object-affected harmful factors
If artificial fibers are used to make softer artificial fur and shearling products, then the softness improves, but the qualities of genuine natural wool fleece are lost
Solution Approach 1:
The patent changes the fundamental parameter of fiber material from synthetic to natural wool. By using actual natural wool fibers instead of artificial polymers, the invention maintains the inherent qualities of genuine wool such as moisture-wicking, breathability, and natural softness, while still achieving the desired soft hand feel through proper pile construction and finishing processes
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 resulting fabric is soft, dense, and resembles natural sheepskin fleece, offering a cost-effective and abundant alternative for use in products like footwear and apparel, while maintaining the insulating and breathable qualities of genuine sheepskin.
Implementation Method 1
polishing the wool fleece side by passing the web through at least two sets of heated rollers
Data Source
AI summary
A method of making a sheared wool, deep pile fabric that closely resembles natural sheepskin fleece that includes forming a length of wool pile fabric having natural wool fibers on one side and a scrim on an opposing side and finishing the wool pile fabric as natural shearling. The finishing process includes polishing the wool fiber side of the pile fabric by guiding the length of pile fabric over one or more heated first polishing rolls, applying a sheepskin conditioning solution to the wool fiber side of the pile fabric, further polishing the wool fiber side of the pile fabric by guiding the fabric a plurality of times over one or more second heated polishing rolls, and cutting the wool fibers to a designated length.