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Three major production processes of webbing
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The webbing weaves the warp and weft threads. The twisted yarn is twisted into a bobbin (reel), and the weft yarn is rolled into a hook and placed on the loom webbing. The 1930 s were hand-drawn wood loom and ironwood loom webbing. In the early 1960 s, 1511 looms were converted into webbing loom, which is still widely used today. Due to the small width of the belt, the weaving method is also different, there are single, double, dozens of, single-layer, and double-layer.
One. Weaving (woven)
The webbing weaves the warp and weft threads. The twisted yarn is twisted into a bobbin (reel), and the weft yarn is rolled into a hook and placed on the loom webbing. The 1930 s were hand-drawn wood loom and ironwood loom webbing. In the early 1960 s, 1511 looms were converted into webbing loom, which is still widely used today. Due to the small width of the belt, the weaving method is also different, there are single, double, dozens of, single-layer, and double-layer.
In 1967, the shuttleless webbing research group with workers as the main body successfully designed and manufactured the high-speed single shuttleless webbing machine, which realized the shuttleless webbing, shortened the technological process, occupied a small area, and improved the labor productivity. It is a pioneering work in the history of Chinese webbing technology.
In the 1970 s, due to the popularity of continuous dyeing and ironing machines for ribbons, the processing of ribbons developed from traditional dyeing before weaving to weaving before dyeing, weaving before bleaching, and continuous finishing and ironing. Ribbon technology into the ranks of mechanized mass production. In the early 1980 s, Switzerland, Italy and the Federal Republic of Germany introduced high-speed shuttleless loom looms, ironing machines, wrapping machines, warping machines, etc., And webbing technology has entered a new stage of development.
The advancement of webbing technology has brought about the upgrading of products. In 1979, China's first generation of SD9-9 rubber tape trial success, so that the rubber tape products ended the history of dependence on imports. In 1980, SD-81A and B type rubber tape was developed, which is soft, light, strong, small elongation, small impact force, short and flat joints. In early 1990, the Santana sedan seat belt trial production success. After more than two years of research and trial production, the product quality has reached the QC49-92 and TL-VW470 standards.
Two. Weaving (Spindle Weaving)
After the bobbin and the weft yarn are wound to form a weft tube, it is inserted into the fixed tooth seat of the knitting machine, the weft tube rotates along the 8-shaped orbit, and the traction yarn crosses each other. Usually the number of spindles is even, the webbing is tubular, the number of spindles is odd, and the webbing is flat. The weaving process has been applied since old China. Due to different equipment, the number of spindles ranges from 9 to 100. The basic technological process of weaving is: bleaching and dyeing, weft, weaving, falling yarn, shearing and packaging. Since 1960, many technological innovations have been carried out on knitting machines, mainly including expanding the diameter of peach plates, installing automatic parking devices for broken rubber bands, and changing iron ingots to nylon ingots. The improvement of these equipment has increased the speed to 160~190 r/min, the vertical car rate has doubled, and the product quality has been greatly improved.
You can weave not only webbing, but also rope. Tubular belt is a kind of braided rope. The diameter of 1~4cm is called rope or rope line, the diameter of more than 4cm is called rope, and the diameter of more than 40cm is called rope or cable. In 1989, the industry introduced Japan stereotyped cable production line equipment, the following year the production of polypropylene stereotyped cable, won the national silver award.
Third, knitting.
In the 1970 s, warp knitting and weft knitting techniques were widely used in webbing. In 1973, the trial production of knitted nylon wide tight belt was successful. The Italian crochet machine was introduced in 1982 with advanced technology and a wide variety of products. It is especially suitable for thin decorative fabrics, such as lace, elastic bands, window screens, decorative belts, etc. The basic process is: bleaching and dyeing-winding-weaving-ironing-packaging.
Before the 1970 s, the fire hose tube blank was woven with a flat knitting machine, with large diameter deformation and low output. In the second half of 1974, according to the knitting principle, the industry organized a tube blank weaving research group, using warp and weft interweaving, relying on the loop yarn in the loop forming process, using the needle barrel and settlement arc of the loop yarn to connect the interwoven warp and weft into a whole, thus becoming a tubular knitted fabric with weft lining and warp lining. The production technology level of plastic-coated outlet pipe and high-pressure fire hose is in the forefront of the country.
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