Composite Yarn for Brassiere Cup Lifting and Comfort
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Solution Overview
Problem
Textile fabrics used in undergarments, such as bras, often lack comfort and smooth attachment due to the use of thermo-fusible yarns, which provide structural strength but result in an uncomfortable wearing experience and rough texture.
Innovation Solution
A composite yarn is created by intertwining a thermo-fusible yarn with another yarn having a higher melting point, with an offset ratio between 5% and 300%, and a fabric structure comprising inner and outer textile layers with varying contents of composite yarns in different weaving regions to achieve specific functionalities like lifting and supporting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If thermo-fusible yarns are used to provide structural strength and supporting performance, then the cup has better structural strength and supporting performance, but the textile has rough texture and uncomfortable wearing experience
Solution Approach 1:
The patent uses composite yarns consisting of thermo-fusible yarns intertwined with other yarns (such as elastic fibers, cotton, or polyester). This composite structure combines the structural strength benefits of thermo-fusible yarns with the comfort and smoothness of other fiber types, eliminating the rough texture while maintaining supporting performance.
Solution Approach 2:
The patent applies different yarn compositions to different regions of the cup. The lifting sheet and areas requiring strong support use higher concentrations of thermo-fusible yarns, while areas contacting the skin directly use more comfort-oriented fibers. This localized quality distribution optimizes both structural strength and wearing comfort in different functional zones.
2Force
If a lifting sheet made from flat material without elasticity is used, then the cup has lifting capability, but the cup cannot be attached on the breast smoothly and the user may feel uncomfortable
Solution Approach 1:
The patent changes the physical parameters of the lifting sheet by incorporating elastic fibers and using composite yarns with different elasticity levels. This allows the lifting sheet to maintain its lifting force while gaining the flexibility and stretch needed for smooth attachment to the breast, eliminating discomfort from rigid, non-elastic materials.
Solution Approach 2:
The lifting sheet is constructed from composite yarns that combine thermo-fusible fibers (for structural integrity and lifting force) with elastic fibers (for flexibility and smooth attachment). This composite material approach enables the lifting sheet to simultaneously achieve lifting capability and comfortable, smooth attachment to the breast.
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 composite yarn and fabric design enhance comfort and attachment while providing structural strength, allowing for tailored functionalities in garments like bras and sportswear, reducing the risk of sports injuries by protecting muscles.
Implementation Method 1
The first yarn is a thermo-fusible yarn... The melting point of the first yarn is lower than the melting point of the second yarn
Data Source
AI summary
A fabric of a cup body of a brassiere includes an inner textile layer, an outer textile layer and a middle textile layer. A first weaving region and a second weaving region of the outer textile layer respectively include a plurality of composite yarns. Each of the composite yarns includes a first yarn and a second yarn. A melting point of the first yarn is lower than a melting point of the second yarn, and an offset rate of the second yarn relative to the first yarn is from 5% to 300%. A content of the composite yarns in the first weaving region is greater than that in the second weaving region. A content of the composite yarns in a third weaving region of the outer textile layer is less than that in the second weaving region. The first weaving region is at a lifting area of the cup body.