Detailed introduction of acupuncture consolidation method, main purpose explanation and principle analysis (graphic explanation)

Author: Date: 2019-12-04 07:31:15 Hits: 1544 acupuncture consolidation method is a mechanical method of consolidation of the web, its machine principle is simple, short and flexible process, which are widely used in the production of civilian Products in the fields of, industry, national defense, medicine and health, such as geotextiles, filter materials, needle-punched carpets, paper blankets, etc. Although the acupuncture method was produced in a British company as early as 1870, it was not until the 1940s that the British Bywater made major improvements to the old-fashioned acupuncture machine before laying the foundation for the development of modern acupuncture technology. The foundation. In 1957, James Hunter Company of the United States made further improvements to the spindle drive eccentric wheel balance mechanism of the needling machine, and the needling frequency reached 800 times/min. Modern acupuncture machines have greatly improved in manufacturing materials, structural design, production speed and automation. At present, the greater acupuncture frequency of foreign acupuncture machines has reached 3,500 times/min, which is a further 17m. The acupuncture consolidation method is realized by repeatedly puncturing the fiber web by puncturing. There are generally two types of engraving tools for reinforcing fiber webs, one is straight needles with barbs on the edges, and the other is another needle with needles. The principle of acupuncture: when the cross-section is triangular (or other shapes) and the straight needle with barbs on the edge is engraved into the web, the backward barbs on the needle will drive part of the fibers in the web to move into the web [Figure 4-1 (1) 1, make the fibers in the net knot each other. At the same time, the fiber web is compressed due to friction. After entering a certain depth, the lancet rises. At this time, because the barb is in the forward direction, the fiber leaves the barb and stays in the web in a nearly vertical state, forming a vertical fiber [Figure 4-1(2)1. These fiber piles run through the upper and lower parts of the fiber web like 'pins' to generate greater cohesive force, bind with the horizontal fibers, and make the compressed fiber web no longer return to its original shape. Needle-punched nonwovens with mechanical and physical properties and compact structure. When the finished product is stretched, it can effectively overcome the phenomenon of mutual slippage of fibers under tensile stress. Another type of felting needle is a fork needle, which uses a needle at the tip to punch a large number of fibers out of the lower surface of the web to form loops. These loops are arranged in a straight line or connected into pieces to form a stripe or line appearance ( Figure 4-2). Related tags: Previous: How to judge whether the customized non-woven bag is qualified? Where to start