Garment Printing and Cutting Process for Placed Designs
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Solution Overview
Problem
Current processes for manufacturing underwear with printed motifs or designs are lengthy, complex, and expensive, particularly due to the complexity of aligning and cutting printed fabric for placed designs, leading to high costs and inefficiencies.
Innovation Solution
A process utilizing ladder-proof fabric with elastic and non-elastic threads, printed in bands corresponding to garment dimensions, allowing for direct cutting and minimizing waste, with a finishing step that can be decoupled from printing and cutting, enabling quick and economical production of garments with placed designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If placed designs are used on garments, then design position precision is improved, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The design is printed on the fabric before cutting and garment assembly. This preliminary printing action allows the design to be transferred directly onto the fabric in the correct position, eliminating the need for complex alignment procedures during later manufacturing stages. The design pattern is established on the fabric roll itself, so when the fabric is cut and sewn, the design automatically ends up in the correct position on the finished garment.
Solution Approach 2:
The manufacturing process is segmented into independent stages: fabric printing, fabric cutting, and garment assembly. By separating the design application (printing) from the cutting and assembly operations, the process allows each stage to be optimized independently. The printed fabric rolls can be stored and processed separately, and multiple cutting patterns can be applied to the same printed fabric, reducing overall manufacturing complexity.
2Manufacturing precision
If traditional printing and cutting processes are used for placed designs, then production accuracy is improved, but production time and cost increase
Solution Approach 1:
Multiple cutting patterns for different garment sizes and styles are prepared in advance on the printed fabric rolls. The fabric is printed with all necessary design elements, then different cutting templates are applied to create various garment types from the same printed fabric, eliminating the need to reprint for each variant and significantly improving production efficiency.
Solution Approach 2:
The printed fabric rolls serve multiple functions: they provide the base fabric, the design pattern, and the cutting guide simultaneously. A single printed fabric roll can be used to produce multiple different garment types and sizes by applying different cutting patterns, making the printing process universal and eliminating the need for separate printing operations for each garment variant.
3Loss of substance
If fabric is cut with raw edges to minimize waste, then material utilization is improved, but fabric stability deteriorates due to curling
Solution Approach 1:
The fabric edges are treated with a anti-curling agent or thermal process before cutting to prevent curling. This preliminary treatment ensures that when the fabric is cut with raw edges to minimize waste, the edges remain stable and do not curl during storage or subsequent processing. The anti-curling treatment is applied in advance, allowing the fabric to be cut and stored without developing curling problems.
Solution Approach 2:
An intermediary substance or process is introduced between the cutting operation and the final garment assembly to prevent edge curling. This could be a chemical coating applied to the cut edges or a thermal treatment that stabilizes the fabric fibers at the edges, acting as a mediator that allows raw-cut edges to be used without the harmful curling effect.
Data Source
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AI summary
A process (1) for making a garment starting from a fabric (2) having a main longitudinal direction of extension (2a) and a transverse direction (2b) perpendicular to the longitudinal direction (2a), said fabric comprising a first elastic thread and a second non-elastic thread, extending substantially together and in the same direction, with a periodicity of two stitches, said procedure comprising: a printing step (3) in which a plurality of printed bands (3a) having placed designs along at least said transverse direction (2b) and having a width, in the transverse direction (3b), proportional to one dimension of the garment, are printed on said fabric (2), a cutting step (5) in which said fabric (2) is cut in correspondence with cutting lines (3c) suitable to reciprocally divide, at least partially, said single printed bands (3a).