Various yarns are used as raw materials to make narrow-width fabrics or tubular fabrics. There are a wide variety of belt fabrics, which are widely used in various industrial sectors such as apparel, shoe materials, luggage, industry, agriculture, military supplies, and transportation. In the 1930s, webbing was produced in hand-made workshops, and the raw materials were cotton and twine. After the founding of New China, the raw materials for webbing have gradually developed into nylon, vinylon, polyester, polypropylene, spandex, viscose, etc., forming three major types of technology such as weaving, knitting, and knitting. The fabric structure includes plain weave, twill weave, satin weave, jacquard, Double-layer, multi-layer, tubular and joint organization. Woven (woven) warp and weft interweaving. After twisting, the yarn is warped and made into a bobbin (pan head), the weft is shaken into a fiber, and the ribbon is woven on the loom. In the 1930s, weaving belts for hand-drawn wood looms and iron wood looms. In the early 1960s, the 1511 loom was converted into a loom, which is still widely used. Because the width of the belt is small, the weaving method is different, there are single, double, dozens of different, single-layer and double-layer.
In 1967, the industry’s shuttleless webbing research team with workers as the main body successfully designed and manufactured a high-speed single shuttleless webbing machine by itself, which realized the use of no shuttle for the webbing, shortened procedures, reduced floor space, and increased labor productivity.
In the 1970s, due to the promotion of continuous dyeing and ironing machines for belts, the processing of colored belts developed from the traditional process of dyeing and weaving to weaving and then dyeing, weaving and then bleaching, and the continuous processing after ironing. The ribbon technology became mechanized. The ranks of mass production.
In the early 1980s, the industry introduced high-speed shuttleless ribbon looms, ironing combined machines, wrapping machines, warping machines, etc. from Switzerland, Italy, and the Federal Republic of Germany, and ribbon technology entered a new stage of development.
The advancement of ribbon technology has brought product upgrades. In 1979, the first-generation SD9-9 rubber ingot tape was successfully produced in China, which ended the history of relying on imports for rubber ingot tape products. In 1980, SD-81A and B rubber spindle belts were developed, which are soft, light, thin, strong, small in elongation, small in impact, and short and flat joints. At the beginning of 1990, the car seat belts for Santana cars were successfully trial-produced. After more than two years of research and organization of trial production, the product quality has reached QC49-92 and TL-VW470 standards.
2. Weaving (spindle weaving)
After the weft tube is formed by the warping and winding of the yarn, it is inserted into the fixed gear seat of the knitting machine, and the weft tube rotates and moves along the 8-shaped orbit to draw the yarn to cross and weave each other. Usually the number of spindles is even, the woven belt is tubular, and the number of spindles is odd, and the woven belt is flat. Spindle weaving technology has been used in old China. The number of spindles varies from 9 to 100 spindles due to different equipment. The basic process of weaving is: bleaching and dyeing, one weft, weaving, machine opening, cutting, and packaging. Opened in 1960
At the beginning, many technical innovations were made to the braiding machine, mainly including the enlargement of the diameter of the peach board, the installation of an automatic parking device for broken rubber bands, and the change of iron ingots to nylon spindles. The improvement of these equipments has increased the speed to 160~190 rpm, doubled the stand rate, and greatly improved the quality of the products. Weaving not only can weave belts, but also weave ropes. Tubular belt is a kind of braided rope. The diameter of 1~4 cm is called rope or rope, the diameter of more than 4 cm is also called rope, and the diameter of more than 40 cm is generally called cable or cable. In 1989, the industry introduced Japanese eight-strand rope production line equipment, and produced polypropylene eight-strand rope the following year, which won the National Silver Award.
Three, knitting
In the 1970s, knitting warp knitting and weft knitting techniques have been widely used in webbing. In 1973, successfully trial-produced knitted nylon wide and tight belts. In 1982, it began to introduce Italian crochet machines with advanced technology and a wide range of production varieties, especially suitable for thin decorative fabrics, such as lace, elastic band, window screening, and decorative tape. The basic technological process is: bleaching and dyeing-winding-weaving-ironing-packaging.
Before the 1970s, the fire hose billet was woven with a plain loom. The billet diameter was deformed and the output was low. In the second half of 1974, the industry organized a tube blank weaving research team, based on the principle of knitting, using warp and weft weaving. The weft yarns are connected as a whole to become a warp-lined weft-lined tubular knitted fabric. The production technology level of the product’s plastic-coated outlet pipe and high-pressure fire hose ranks first in the country.
