The singeing process is indispensable for the woven fab […]
The singeing process is indispensable for the woven fabrics, especially the woven fabrics with short fibers. However, in order to save costs, sanded fabrics generally do not need to undergo singeing treatment; some woven fabrics need to adjust the singeing process according to product requirements to prevent polyester and stretch yarns from being intolerant to high temperature, and adopt high-temperature fast singeing without burning the reverse No singeing or other craftsmanship on both sides.
How to judge whether the woven fabric has passed the singeing process? To master the following three points.
1. Judging from the surface finish of the fabric: the singeed woven fabric has a better surface finish, with almost no long hairs, and a significant reduction in short hairs. The cotton-containing woven fabrics have fewer neps on the surface and the color is full and uniform. On the woven fabric without singeing, a small amount of long fibers above 5mm can be found in the light, and there are more short fibers of about 2mm. The cotton-containing woven fabric has more neps on the surface and the color of the fabric is obviously uneven , The difference in depth can be seen on the cloth.
2. Judging from the neatness of the edge of the woven fabric: the remaining weft yarns on the edge of the singeed woven fabric will have obvious differences in length. The size of this difference has a great relationship with the singeing process; The singeing process of the woven fabric has neat and consistent edge hairiness, and there is no obvious difference in length. (The edges of the rayon and tencel interwoven fabric are extremely irregular, and you can see obvious traces of singeing)
3. Judging from the traces left after the fiber is burned: The woven fabric containing chemical fibers in the weft direction can be judged by analyzing the shape of the weft on the fabric edge to determine whether it has been singed. Since chemical fibers have a melting process, singeing woven fabrics will see traces of chemical fiber melting in the weft yarn residues of the fabric edge. Under normal circumstances, it can be observed with the naked eye, the hand feels spherical and tingling, and the traces of its melting can be clearly seen under the microscope.