Three-roller machine for producing epoxy zinc-rich primers

Abstract

The invention relates to a three-roller machine for producing epoxy zinc-rich primers. The three-roller machine for producing epoxy zinc-rich primers is characterized in that the three-roller shafts of the three-roller machine are in a same plane and mutually parallel, the axes of four positioning shafts respectively parallel to the axis of a lower roller, the four positioning shafts are respectively sleeved with sleeve devices, the sleeve devices are respectively provided with film reels, and the sleeve devices make the film reel rotate on the positioning shafts around the axes of the positioning shafts in an axial fixity manner. Each of the sleeve devices comprises a sleeve, an inner baffle plate and an outer baffle plate, the outer side of the sleeve is provided with at least one positioning hole, an internal screw thread is arranged in each of the at least one positioning hole, and a second bolt is arranged in each of the at least one positioning hole, and tightly pulls each of the positioning shafts. The machine allows two edges and the upper and lower surfaces of a sheet to be respectively compounded with a one-sided aluminized terylene film before compounding of a waterproof coiled material with a nonwoven fabric in order to solve the recycling problem of scraps.

Description

technical field [0001] The invention mainly relates to a three-roller machine for a sheet material production line, in particular to a three-roller machine for producing waterproof rolls of double-sided composite non-woven fabrics. Background technique [0002] The current production of chlorinated polyethylene waterproofing membranes for high-speed railway bridge waterproofing is mainly produced by extrusion. The basic production process is: weighing ingredients according to the formula, stirring at high and low speeds, feeding, extrusion molding, Three-roll cooling and shaping, natural cooling, trimming, traction, random inspection, metering and winding, packaging and labeling, etc. Due to the large amount of leftover materials cut from the waterproof membrane, it accounts for more than 3% of the materials used in chlorinated polyethylene waterproof membrane products. Both sides of the polymer material are compounded with non-woven fabrics. The non-woven fabrics are forme...

AI Technical Summary

Problems solved by technology

Due to the large amount of leftover materials cut from the waterproof membrane, it accounts for more than 3% of the materials used in chlorinated polyethylene waterproof membrane products. Both sides of the polymer material are compounded with non-woven fabrics. The non-woven fabrics are formed by acupuncture of polyester staple fibers. Some manufacturers have invested a certain amount of manpower, material and financial resources in order to reuse these scraps. The leftovers of the woven fabric are first pulverized by a pulverizer, and the hair of the non-woven fabric is blown off by a blower while pulverizing, and then pulverized by a mill. Although this method can remove most of the non-woven fabric residue, It is always inexhaustible, as long as there are even 0.0% of polyester staple fibers in the chlorinated polyethylene polymer materials, it will greatly improve the physical properties of the chlorinated polyethylene polymer materials. impact on the environment, because in the chlorinated polyethylene polymer material, each polyester staple fiber is a stress point, and it will break from here first when doing the tensile test. According to practical experience, this kind of polyester staple fiber with non-woven fabric The physical performance index of the chlorinated polyethylene polymer material should be reduced by about 50%. If this kind of leftover material with a very small amount of polyester staple fiber after being crushed and ground into powder is used again, its performance index will not reach the product at all. quality requirements

Because the quality and performance indicators of the recycled leftovers are far from the product requirements, they can only be used on products with lower quality requirements, which greatly discounts the cost performance of raw materials, and this method not only Pollution of the environment does not meet the requirements of the low-carbon economy advocated now

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