High-strength paper backing sand paper and manufacturing method thereof

Abstract

The invention discloses high-strength paper-based sand paper, which consists of base paper, an impregnating agent, a coating reagent and an under adhesive. The manufacturing method of the sand paper includes the following steps of unwinding, impregnating, coating, calendaring setting, winding, identification marking, under adhesive coating, high pressure electrostatic sand planting, pre-drying, glue coating, main drying, rolling, solidifying, unrolling and warehousing. The high-strength paper-based sand paper and the manufacturing method thereof have the advantages that the base paper which adopts the high-density material of 250g / m2 is high in tensile strength and the produced finished abrasive belt products can replace the similar abrasive cloth products; the sand paper is high in smoothness and can be used for manufacturing sand paper with ultra-fine particle sizes and the thinnest size can reach 1200 model; a new radiating wave type electrostatic sand planting technology is adopted with the voltage of 36 kv and frequency of 60Hz, and the gaps between compression rollers are kept between 1 and 6cm (micro adjustment can be made according to the particle sizes of the abrasive fillers that go through the compression rollers) so as to ensure the uniform distribution of the sand planting density; the cryolite is adopted as a filling agent in the under adhesive coating in order to ensure the thickness of the under adhesive and the bond force and to prevent adhesive penetration; the upper sands are evenly distributed, and the sand particles and work pieces are kept on the same plane and are attached closely in the grinding, and the consumption of the sand particles is synchronous and the ground wood work pieces have smooth surfaces; the antistatic function is provided.

Description

Technical field:

[0001] The invention relates to a sandpaper, in particular to a high-strength paper-based sandpaper and a manufacturing method thereof. Background technique:

[0002] At present, the substrates in domestic coated abrasives are made of cotton cloth and blended fabrics. However, due to the shortage of land resources in my country and the shortage of cotton supply, the use of paper substrates as substrates is an inevitable trend for the development of the abrasive industry. And in the prior art, when the general abrasive belt is grinding, static electricity will be generated due to friction, such as grinding wood static electricity will make wood chips adsorb in the gaps of sand grains, resulting in blockage and affecting grinding efficiency. Contents of the invention

[0003] The technical problem to be solved by the present invention is aimed at the deficiencies of the prior art. The present invention provides a high-strength paper-based sandpaper and its m...