The current production of PP high-strength industrial fibre process routes are mainly one-step and two-step method. One-step method and short-range and direct multi-stage drawing of the points, two-step method with a horizontal set of drafting and vertical single drafting two. One-step method and two-step method of the main difference is that: one-step spinning silk is Cambodia after oil, the godet roller directly to the drafting system, and then wound on the bobbin; two-step spinning, silk Cambodia After oiling, the first winding into a bobbin, and then by the drawing creel to give draft system.
Two process routes have their own characteristics
The advantage of one-step method is to save the intermediate set of index feedback speed, low energy consumption; two-step method has the advantage of spinning and drafting separate two-step processing does not affect each other, which is conducive to process adjustments, especially when changing raw materials and colors more Advantage, the winding of the wire drum can rotate for a period of time, in order to relax the internal stress, to facilitate access to a higher orientation, which can be high strength, high quality polypropylene filament, due to the two-step method when drawing the feed rate of low rollers Easy to increase draw ratio, to obtain higher strength.
In recent years, with the continuous improvement of contemporary industrial technology and continuous expansion in the field of industrial textiles, PP high-strength industrial fibre is also widely used in the following industrial fields due to its unique economic and performance factors:
(A) PP high-strength industrial fibre used in rope category
Made of high-strength polypropylene filament rope and construction, transportation, agriculture, fisheries, sports activities with the net, the high breaking strength, wear resistance, corrosion resistance, light weight and safety. For 1111dtex / 240f, 1333dtex / 240f, 1666dtex / 240f, 2222dtex / 240f and other specifications of high-strength polypropylene filament.
(B) PP high-strength industrial fibre used in the line
Because of its low price, high strength, anti-aging, abrasion resistance, seawater corrosion resistance, good elasticity and other characteristics, mainly used in sewing cement bags, fertilizer bags, plastic woven bags, fishing nets Weaving and other industries. Applicable to 333dtex / 120f, 466dtex / 120f, 666dtex / 120f, 933dtex / 240f and other specifications of high-strength polypropylene filament.
(C) PP high-strength industrial fibre for cloth
The geotextiles woven with high-strength polypropylene filament are suitable for engineering projects such as roads, railways, airports, seawalls, ditches, reservoirs, harbors and bridges, and have the advantages of no break in navigation, cofferdam construction, dam drainage and high speed, Investment in the province, good quality, etc., especially in the case of large load bearing, woven geotextile nonwoven geotextile more unique. Use of its acid and alkali resistance, corrosion resistance, high strength, non-absorbent, light weight, good stability, good filter stripping, etc., can be made of high-strength polypropylene filter cloth, mainly used in metallurgy, mineral processing, chemicals, light industry, food , Environmental protection and other industries. Suitable for 333dtex / 120f, 466dtex / 120f, 666dtex / 120f, 933dtex / 240f, 1111dtex / 240f, 1333dtex / 240f, 1666dtex / 240f, 2222dtex / 240f and other specifications of high-strength polypropylene filament.
(D) PP high-strength industrial fibre used in belts
The use of high strength polypropylene filament high strength, light weight, high breaking strength characteristics can be made of the safety factor higher requirements of the flexible container bags, seat belts, high pressure fire hose and other products. Applicable to 333dtex / 120f, 933dtex / 240f, 1111dtex / 240f, 1333dtex / 240f and other specifications of high-strength polypropylene filament.
Process route of PP high-stren
