In this paper laminated composites with woven fabric on the front side, polyurethane foam (PU) in the middle and knitted fabric on the back side were analyzed. These materials are widely used in the automotive industry, medicine, protection activities and other groups of technical textiles Based on analyses and problems encountered in practice, the hypothesis was made that the speed of joining the components into a laminated composite influences the needle penetration force and finally the seam quality when sewing. Investigations were performed using three GB needle systems, two PU thicknesses (2 and 4 mm) and three joining speeds (30, 35 and 40 m/min). According to the results obtained, it can be concluded that higher joining speeds determine lower penetration forces. By systematic analysis of the sewing seam the deformation of laminated composites occur at stitch points, which is caused by hardened PU residues after the lamination of components to a composite. Heating the needle during sewing resulted in partial melting of PU and adhesion of needle to the material is penetrating through which means damage to the needle and seam. This negative occurrence is more pronounced at lower bonding speeds, for higher PU thickness and thicker needle. Based on the results obtained it can be claimed that bonding speed, polyurethane thickness (PU) as well as needle type affected the penetration forces of sewing and seam quality.

在本文中，正面是机织织物的层压复合材料，中间是聚氨酯泡沫（PU），背面是针织物。这些材料广泛用于汽车工业，医药，保护活动和其他类别的工业用纺织品。根据实践中遇到的分析和问题，提出了一个假设，即将组件连接到叠层复合材料中的速度会影响针的穿透力和最后是缝制时的接缝质量。使用三个GB针系统，两个PU厚度（2和4 mm）和三个连接速度（30、35和40 m / min）进行研究。根据获得的结果，可以得出结论，较高的连接速度决定了较低的穿透力。通过对缝线的系统分析，层压复合材料的变形会在缝合点发生，这是由将部件层压到复合材料后硬化的PU残留物引起的。缝制过程中加热针头会导致PU的部分熔化，并且针头与材料的粘附力正在渗透，这意味着对针头和接缝的损坏。对于较高的PU厚度和较粗的针，在较低的粘合速度下，这种负面影响更为明显。根据获得的结果，可以说粘合速度，聚氨酯厚度（PU）以及针的类型都会影响缝纫的穿透力和接缝质量。缝制过程中加热针头会导致PU的部分熔化，并且针头与材料的粘附力正在渗透，这意味着对针头和接缝的损坏。对于较高的PU厚度和较粗的针，在较低的粘合速度下，这种负面影响更为明显。根据获得的结果，可以说粘合速度，聚氨酯厚度（PU）以及针的类型都会影响缝纫的穿透力和接缝质量。缝制过程中加热针头会导致PU的部分熔化，并且针头与材料的粘附力正在渗透，这意味着对针头和接缝的损坏。对于较高的PU厚度和较粗的针，在较低的粘合速度下，这种负面影响更为明显。根据获得的结果，可以说粘合速度，聚氨酯厚度（PU）以及针的类型都会影响缝纫的穿透力和接缝质量。