Curved Garment Opening Bonding to Minimize Undulation and Puckering
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Solution Overview
Problem
Conventional methods for joining tape-shaped opening parts to garments result in undulation and puckering defects due to differences in inner and outer circumferences, especially when curved openings are involved, 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, allowing the opening part to follow the curvature of the garment, reducing undulation and puckering by fixing the fabric with a ratio of adhesive dot intervals and stretching the fabric during bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a linear opening part is stitched to a curved opening using conventional sewing methods, then the opening part can be joined to the garment, but undulation occurs inside the opening part due to the difference between inner and outer circumferences
Solution Approach 1:
The opening part is pre-shaped into a curved configuration matching the garment opening before joining. The fabric is folded and positioned to conform to the curved opening shape, so that when adhesive dots are applied and the garment is worn, the opening part naturally follows the curvature without undulation or puckering.
Solution Approach 2:
The invention changes the geometric parameters of the opening part by forming it into a curved shape with specific radius of curvature that matches the garment opening. This parameter adjustment allows the linear fabric to conform to the curved opening without creating undulation, while the adhesive dot placement pattern is optimized to maintain this curved configuration during wear.
2Manufacturing precision
If the opening part is stretched during stitching to alleviate undulation, then the undulation is reduced, but a puckering defect occurs on the garment main body due to the elastic recovery force
Solution Approach 1:
Instead of stretching the opening part during stitching and then allowing it to relax (which causes puckering), the invention pre-shapes the opening part into the correct curved configuration before joining. The adhesive dots are applied to this pre-formed curved shape, so the opening part maintains its curved form during wear without experiencing elastic recovery forces that would cause puckering on the garment main body.
3Stability of the object's composition
If adhesive dots are evenly distributed along the opening part, then the bonding is uniform, but the opening part cannot follow the curvature of the garment opening
Solution Approach 1:
The adhesive dots are not evenly distributed but are strategically placed at different intervals along the opening part. The spacing between adhesive dots varies to accommodate the curved geometry, with closer spacing in certain regions and wider spacing in others, allowing the opening part to follow the garment opening curvature while maintaining adequate bonding strength at critical locations.
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 minimizes undulation and puckering defects while maintaining design flexibility by ensuring the opening part follows the garment's curvature, 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
AI summary
Provided is a garment having an opening through which a wearer's body passes. The garment 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 the 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.