An investigation on ultrasonic seaming

Ultrasonic seaming method is one of the alternatives to conventional seaming methods used to convert different textile surfaces into final products. This method has become a subject that has been deliberated in recent years. In the study, three types of polyurethane coated woven fabrics and four types of polyurethane coated knitted fabrics were used to investigate the waterproof, strength and bending properties of this alternative method, which was carried out without the use of needle and yarn. These fabrics were ultrasonically and conventionally sewn with various parameters. Adhesive tape was applied to some of conventionally sewn fabrics. The sewn fabrics were washed and the properties of the fabrics were tested before and after washing process. It was observed that the highest waterproof values were obtained in ultrasonic seam and these values changed due to the parameters. Also it was observed that the seam strength values of the ultrasonically sewn fabrics were lower and the bending values were higher than the fabrics conventionally sewn. The results were also evaluated in terms of fabric type, roller type, ultrasonic seaming velocity and position of the coating and they were statistically analyzed.