Manufacturing process of nubuck used for polishing precision instruments and electrical products
A technology for electrical products and precision instruments, applied in the field of leather for grinding, which can solve the problems of low accuracy, easily damaged instruments by sandpaper, and high scrap rate of finished products
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Embodiment 1
[0014] A manufacturing process of a nib for polishing precision instruments and electrical products, comprising the following steps:
[0015] (1) Infiltrate the non-woven fabric with a grammage of 220g / ㎡ and a thickness of 0.95 at a linear speed of 8m / min, then squeeze it dry with a pressure of 4kg, and iron it flat; the impregnated material is made of PU resin, two Composition of methyl formamide and pigment, the weight ratio is 100:400:2;
[0016] (2) Pass the non-woven fabric treated in step (1) through a coating head to coat a layer of coating material with a viscosity of 10000cps on the substrate; the coating material is made of PU resin, dimethylformamide, Composition of colorants, the weight ratio is 100:45:1;
[0017] (3) The non-woven fabric substrate treated in step (2) is sequentially solidified and washed through a coagulation tank and a washing tank, and the coagulation tank and the washing tank are respectively equipped with dimethylformamide solution and fresh ...
Embodiment 2
[0021] As described in embodiment 1, a kind of manufacturing process of precision instrument and electric product polishing with nibbar,
[0022] The grammage and thickness of the non-woven fabric described in step (1) are prepared using the following two sets of data respectively:
[0023] Gram weight: 230 g / ㎡, 240 g / ㎡, 250 g / ㎡;
[0024] Thickness: 0.96mm, 0.98mm, 1.0mm.
[0025] Tests show that the gram weight and thickness of the microfiber non-woven fabric are between 220-250g / ㎡ and 0.95-1.0mm, and the made nubs can all achieve the purpose of the present invention.
Embodiment 3
[0027] As described in embodiment 1, a kind of manufacturing process of precision instrument and electric product polishing with nibbar,
[0028] In step (1), the linear speed of the impregnated non-woven fabric is controlled at 8.1 m / min, 8.2 m / min, 8.3 m / min, 8.4 m / min, 8.5 m / min, 8.6 m / min, 8.7 m / min, 8.8 m / min, 8.9 m / min, 9 m / min.
[0029] The test shows that when the linear speed of the microfiber non-woven fabric is controlled at 8.2-8.8 m / min, the effect is the best; Reach the object of the present invention.
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