Seamless Clothing Back Fastener Using Thermal Bonding
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Solution Overview
Problem
Existing underwear connectors with sewing seams cause discomfort, uneven appearance, and potential skin irritation due to the presence of seams, which affects user experience and the aesthetic appeal of bras.
Innovation Solution
A seamless clothing back fastener is developed using a cylindrical webbing formed by mechanical weaving, with slits for fasteners and a lining cloth, where the outer sleeve bag is directly woven and thermally bonded to the lining cloth, eliminating seams and allowing for customizable colors and patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If eye fasteners are directly sewn to the eye tape by using fabric tapes, then the fastening function is achieved, but rows of sewing seams appear on the rear side affecting appearance and causing skin discomfort
Solution Approach 1:
The invention extracts the harmful sewing seams from the contact surface by using a cover cloth that completely covers the rear side of the eye tape. The fastening function is maintained through the fasteners on the front side, while the cover cloth removes the visual and tactile defects from the rear side, eliminating the contradiction between functional reliability and appearance quality.
Solution Approach 2:
The invention uses a flexible cover cloth (thin film) that completely covers the rear side of the eye tape. This cover cloth acts as a protective layer that eliminates the visibility and tactile sensation of sewing seams, thereby improving appearance quality and comfort while maintaining the fastening function through the fasteners on the front side.
2Shape
If a seamless reverse binding back fastener is used with inner lining cloth and cover cloth, then appearance effect and comfort are improved, but more manufacture procedures are needed and the fastener becomes thicker
Solution Approach 1:
The invention extracts the problematic sewing seams from the structure by using a cover cloth that completely covers the rear side. This approach maintains the simple single-layer structure while eliminating the need for complex reverse binding procedures, thereby improving appearance effect without significantly increasing manufacturing complexity.
3Device complexity
If sewing seams are present on the back fastener, then the fastening structure is simple, but the seams cause discomfort and potential skin irritation during use
Solution Approach 1:
The invention uses a flexible cover cloth (thin film) that completely covers the rear side of the eye tape, creating a smooth contact surface with the skin. This cover cloth eliminates the harmful factors of sewing seams (irregularities, sharp edges) while maintaining the simple fastening structure, thereby resolving the contradiction between structural simplicity and skin comfort.
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 provides a comfortable, seamless, and aesthetically pleasing fastener system that reduces skin irritation and seam-related discomfort, while allowing for various color and pattern options, enhancing user experience and adaptability.
Implementation Method 1
A cylindrical webbing is formed by directly weaving with a mechanical weaving method through a cylindrical weaving machine
Implementation Method 2
The outer sleeve bag and the lining cloth are fixedly connected
Data Source
AI summary
A preparation method for a clothing back fastener includes weaving a cylindrical webbing with a mechanical weaving method, cutting the cylindrical webbing into a plurality of units with two ends open, closing one end to form an outer sleeve bag with one end open, and providing a plurality of slits on the outer sleeve bag; sewing a plurality of fasteners on the surface of a cloth strip, and cutting the cloth strip into a plurality of units to form a lining cloth; disposing the lining cloth in the outer sleeve bag in a sleeved mode, and inserting the fasteners into respect slit to be located outside the outer sleeve bag, and fixing the outer sleeve bag and the lining cloth. The method further includes attaching a hot melt film on the lining cloth to thermally bond the outer sleeve bag and the lining cloth to achieve fixed connection therebetween.