Surface Sewing Structure for Functional Yarns
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Solution Overview
Problem
The existing methods for embedding functional yarns like light-reflective yarns with glass beads into clothing cause damage due to friction, leading to defects as the glass beads fall off during sewing, affecting the yarn's reflective performance and resulting in defective products.
Innovation Solution
A sewing structure that fixes the thread body on the surface of a sheet-shaped object using upper and lower threads without passing through the object, utilizing seam sections to secure the thread body, maintaining its integrity and function while preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the light-reflective yarn is twisted with other yarns into multiple strands to enable sewing, then the yarn can be sewn on clothes, but the yarn diameter becomes too thick and not fine, which increases the resistance of sewing
Solution Approach 1:
The patent introduces a fixing thread as an intermediary element that secures the light-reflective yarn to the clothing surface without requiring the yarn itself to be thickened or twisted. The fixing thread acts as a mediator that provides the necessary mechanical strength for sewing while the light-reflective yarn remains thin and intact, thus resolving the contradiction between sewability and yarn diameter.
2Reliability
If the light-reflective yarn is sewn by passing through the fabric, then the yarn can be fixed on clothes, but the glass beads on the surface will fall off and damage the light-reflective yarn due to friction
Solution Approach 1:
Instead of passing the light-reflective yarn through the fabric from the inside out, the patent inverts the approach by securing the yarn on the surface of the clothing using the fixing thread. This inversion eliminates the need for the yarn to penetrate the fabric, thereby preventing friction-induced damage and glass bead loss while still achieving reliable fixation.
Solution Approach 2:
The fixing thread serves as an intermediary that provides the mechanical anchoring function, allowing the light-reflective yarn to be secured without direct contact with the fabric interior. This mediator approach prevents the yarn and its glass beads from experiencing damaging friction during the sewing process.
3Ease of manufacture
If the light-reflective yarn is twisted into multiple strands, then it can be sewn, but manufacturing costs increase and the original thread diameter cannot be maintained
Solution Approach 1:
The fixing thread acts as a separate intermediary component that provides the necessary sewing functionality. This allows the light-reflective yarn to be used in its original form without twisting or thickening, thereby maintaining the original thread diameter and reducing the quantity of light-reflective yarn material required while still achieving sewability.
Data Source
AI summary
The invention relates to a thread body sewing structure, comprising: a sheet-shaped object, at least one upper thread, and at least one thread body, the upper thread and the thread body are sewn on the sheet-shaped object, the upper thread is located on a front side of the sheet-shaped object; the thread body is fixed on the front side of the sheet-shaped object by the upper thread. Thereby, the thread body is fixed on the front side of the sheet-shaped object by the upper thread, and does not need to pass through the object, so the thread body will not be damaged, and an integrity of its structure and functions can be maintained.