Garment Opening Adhesive Layout to Reduce Curved-Edge Puckering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for joining a tape-shaped opening part to a garment result in undulation and puckering defects due to differences in inner and outer circumferences, especially when the opening is curved, and existing techniques restrict design flexibility.
Innovation Solution
A garment design with adhesive dots arranged in specific intervals and patterns to form a concave curve, ensuring a ratio of adhesive dot intervals and angles that minimize undulation and puckering, using stretchable fabrics and adhesive bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a tape-shaped opening part is stitched to a curved opening of a garment, then the opening part is joined to the garment, but undulation occurs at the inside of the opening part due to the difference between inner and outer circumferences
Solution Approach 1:
The invention changes the physical state of the opening part by stretching it during the joining process. This parameter change allows the linear opening part to conform to the curved opening, preventing undulation while maintaining proper joining. The stretching transforms the rigid linear structure into a flexible state that can adapt to the curved geometry.
Solution Approach 2:
The invention applies preliminary stretching to the opening part before joining it to the garment. This preliminary action prepares the opening part to accommodate the curved opening shape, preventing undulation from occurring during the joining process. The stretching is performed in advance to ensure proper fit.
2Shape
If the opening part is stretched during stitching to alleviate undulation, then undulation is reduced, but puckering defects occur at the joint portion due to the returning force
Solution Approach 1:
The invention replaces the mechanical stitching system with a thermal bonding system using hot-melt adhesive. Instead of mechanically stitching the stretched opening part (which causes puckering when it returns), the adhesive bonds the fabric while it is in the stretched state, locking in the desired shape without the harmful returning force.
Solution Approach 2:
The invention introduces hot-melt adhesive as an intermediary substance between the opening part and the garment. This adhesive mediator allows the opening part to be joined in its stretched state without requiring mechanical stitching that would cause puckering. The adhesive holds the fabric in the correct position while accommodating the curved geometry.
3Ease of manufacture
If adhesive dots are provided at uniform intervals, then the joining process is simple, but undulation and puckering defects occur in curved openings
Solution Approach 1:
The invention applies local quality by varying the interval of adhesive dots depending on the location. In the curved portion of the opening, the adhesive dots are provided at smaller intervals to prevent undulation, while in the straight portions, larger intervals can be used. This localized adjustment of adhesive dot spacing optimizes both appearance and manufacturing efficiency.
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 effectively reduces undulation and puckering defects while maintaining design flexibility by using a concave curve and controlled adhesive dot placement, enhancing appearance quality.
Implementation Method 1
The opening part is fixed with adhesive dots provided in a plurality of rows along a mountain fold line and a fabric end of the fabric
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
In order to provide a garment in which undulation of an opening part as well as a puckering defect of the opening part and a main body portion are reduced even in a case of a configuration in which the opening part is joined to a concave curved opening, the garment of the present invention is a garment that has an opening through which a wearer's body passes and includes a garment main body provided with an opening part formed by folding a fabric, the opening part being joined along an edge of the opening of a garment main body. The opening part is fixed with adhesive dots provided in a plurality of rows along a mountain fold line and a fabric end of the fabric, and an average value LA of intervals between adjacent adhesive dots provided within a 3-cm section in a row of adhesive dots that are provided closest to a fabric end side of the opening part is smaller than an average value LB of intervals between adjacent adhesive dots provided within a 3-cm section in a row of adhesive dots that are provided closest to a mountain fold line side of the opening part.