In the design of the garment structure, the size of the length of the garment length, the length of the pants, the length of the sleeve, the length of the skirt, etc. must be taken into account in the process retraction rate. Take the clothing lengther as an example. In the case of known clothing styles and specifications, the calculation formula for the model length is as follows:        Model length = (Final length + standard size + seam loss) / ( 1 - retraction rate) The size of the retraction rate can be determined through trials before the garments are processed in large batches. It can also be based on past experience, but the specificities of the styles, such as the length of the sewing process and the order of the printing process, must be considered.  In order to ensure that the final size meets the pre-designed specifications, the fabric must be allowed to stand for more than 24 hours before sewing to fully release the external force applied to the fabric in the dyeing and finishing process and the post-rolling process, and to recover the dimensions resulting from the elastic deformation. Variety. In addition, the process flow of the same batch of products should be consistent and avoid pulling hard during the sewing process. Single Beam Spunbond Nonwoven Line Series Spunbond Nonwoven Fabric Machine,Pp Non-Woven Machine,Spunbond Nonwoven Production Line,Model Nonwoven Fabric Machine Changzhou Xinzhongshun Nonwoven Machinery Co., Ltd. , https://www.xzsnonwovenmachine.com
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Process retraction of knitted fabrics
Knitted fabrics in the post-finishing and sewing process, the length and direction of mad gambling will occur a certain degree of retraction, the amount of retraction and the length of the original clothing piece, the ratio of the size of the shrinkage. The size of the shrinkage is related to the structure of the fabric , the type and fineness of the raw material, the density of the fabric, the dyeing and finishing process, the finishing, the environmental temperature and humidity, the parking time, the order of printing and cutting, and the sewing process. Process shrinkage is an important characteristic of knitted fabrics. In the structural design, style modeling and processing process, proper amount of relaxation should be taken into consideration. The shrinkage rate is also a process parameter that must be taken into account when designing the template.