Webbing strap Progress in process technology
Brought about the upgrading of the product. In 1979, the successful trial production of the first generation of SD9-9 rubber spindles in China made rubber strips with a history of dependence on imports. In 1980, SD-81A and B-type rubber spindle tapes were also developed, which are characterized by softness, lightness, thinness, firmness, small elongation, low impact force, and short and smooth joints. In early 1990, a successful trial of a seat belt for the Santana car was successfully implemented. After more than two years of research and organization, the product quality has reached QC49-92 and TL-VW470 standards.
After the yarn warp tube and the weft yarn form a weft thread tube, the weft thread tube is inserted on a fixed tooth holder of the knitting machine, and the weft yarn tube is gyrated along the figure-shaped track to interweave the traction yarns. Usually the number of spindles is even, the tape is woven into a tube, the number of spindles is odd, and the woven tape is a flat sheet. Ingot weaving technology began to be applied in old China, and the number of spindles varies from 9 to 100 spindles, depending on the equipment. The basic process flow for weaving is: bleaching and dyeing—weft-weaving—drop-cutting—packaging. Since 1960, several technical innovations have been carried out on the braiding machine, mainly including enlargement of the diameter of the peach plate, installation of an automatic stopping device for the rubber band, and change of the iron bar to a nylon spindle. Improvements on these devices have led to a speed increase of 160 to 190 rpm, a doubling of the stand-out rate, and a significant increase in product quality.
Looking forward to your inquiry for this webbing strap ends tie down straps with hooks