One-Size Stretchable Denim Garment with Protective Fiber Coating
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Solution Overview
Problem
Conventional denim trousers with stretchiness are limited in size adaptability, lose elasticity after multiple uses and washings, and often require different sizes for various body types, while methods to achieve an aged look can damage the material and seams.
Innovation Solution
A garment made from a fabric blend of cotton, texturized polyester, and elastane, using a chain stitch seam with 100% polyester thread, and a specialized washing treatment involving polyurethane and polyethylene to protect and enhance the elasticity, allowing the garment to stretch 100% and maintain shape recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional stretchy denim trousers are made with limited elastane content, then the garment provides basic stretchiness for fit, but the elasticity is lost after several uses and washings
Solution Approach 1:
The patent changes the elastane content parameter from conventional low levels (typically 2-5%) to a high level of 20-40%, fundamentally altering the stretch and recovery properties of the denim fabric. This parameter change enables the garment to maintain its elastic properties after multiple uses and washings, resolving the contradiction between providing basic fit stretchiness and maintaining durability of elasticity.
Solution Approach 2:
The patent uses a composite fabric material combining cotton (60-70%), polyester (20-30%), and high-content elastane (20-40%). This composite structure leverages the strength and durability of cotton and polyester while incorporating a high proportion of elastane to ensure long-term elastic recovery, thus maintaining reliability of stretchiness over time.
2Adaptability or versatility
If different sizes are made for various body types, then the garment fits different users properly, but manufacturing complexity and costs increase
Solution Approach 1:
The patent creates a universal garment design that can fit multiple body types through the use of high-stretch fabric with 20-40% elastane. The excessive elastic properties allow a single size garment to accommodate various body sizes and shapes, eliminating the need to manufacture multiple size variants and thereby reducing manufacturing complexity.
Solution Approach 2:
The patent introduces dynamic adaptability to the garment through high elastane content, allowing the fabric to dynamically stretch and conform to different body shapes. This dynamic property enables one-size-fits-all functionality, as the garment automatically adjusts to the wearer's body dimensions without requiring pre-manufactured size variations.
3Shape
If abrasive treatments are applied to age the denim material, then the garment achieves a distressed look, but the material and seams are damaged
Solution Approach 1:
The patent introduces protective intermediary layers consisting of silicone and polyurethane coatings on the fabric surface. These intermediary layers act as a barrier during abrasive washing processes, allowing the creation of a distressed aesthetic appearance while preventing actual damage to the underlying denim material and seams, thus preserving structural integrity.
Solution Approach 2:
The patent applies protective coatings of silicone and polyurethane to the fabric before subjecting it to abrasive treatments. This beforehand cushioning creates a protective shield that absorbs the mechanical stress of abrasion, enabling the garment to achieve an aged look without compromising the strength and durability of the material and seams.
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 enables a one-size-fits-all denim trouser design that maintains elasticity and durability, accommodating various body sizes and providing a distressed look without material damage, thus increasing manufacturing efficiency and user versatility.
Implementation Method 1
the synthetic fibres, non-elastic and elastic, are covered by protective components, preferably by polyurethane and polyethylene
Implementation Method 2
a second synthetic elastic fibre material... the fabric allows the width of the garment to be doubled, stretching said fabric a 100%, at the same time that the fabric does not lose its stretchable properties
Data Source
AI summary
Garment and manufacturing method, describes a one size garment (1) for different sizes of women or men, made of a fabric comprising at least a natural non-elastic fiber material, a first synthetic fiber material and a second elastic synthetic fiber material, these synthetic fibers being covered by polyurethane and polyethylene, having chain stitch seams (3) using 100% polyester thread (4) in which are also stretchy, which join together the different pieces (2) to form the garment; and in that said garment (1) has a distressed look in certain areas of the material. The manufacture thereof comprises making, by hand or machine, using round point needles and a subsequent wash process in two phases, in which an emulsion to protect the elastic fibers is added.