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Production method of adhesive-free coated abrasive

A production method and coating technology, applied in the direction of grinding devices, manufacturing tools, grinding/polishing equipment, etc., can solve the problems of increasing the grinding temperature, polluting the grinding work surface, reducing the grinding efficiency, etc. The effect of lowering the working temperature and grinding temperature and improving the grinding efficiency

Active Publication Date: 2017-03-15
HENAN WANGPAI ABRASIVE CLOTH MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main component of the adhesive layer is phenolic resin, which has certain elasticity and viscosity. When grinding, the adhesive layer covering the surface of the abrasive will contact the grinding surface together with the abrasive, which not only reduces the grinding efficiency, but also increases the grinding temperature. , and will pollute the grinding face

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The production method of the 2000-mesh non-adhesive sandpaper is as follows:

[0022] The first step is to apply the primer layer:

[0023] Apply a primer layer on the paper base material, the thickness of the primer layer is 80% of the total thickness of the traditional primer layer + re-adhesive layer (the weight of the primer used is the total amount of glue used for the traditional primer layer + re-adhesive layer 80%), the viscosity of the primer used is 1.5 times that of the traditional primer, that is, when the primer is prepared, it can be adjusted to 1500 cp (the viscosity of the traditional primer is 1000 cp), when the abrasive When the particle size is large, the viscosity of the primer can be increased appropriately;

[0024] The second step, sanding

[0025] Abrasives with a particle size of 2000 mesh are adhered to the primer layer according to the conventional process, and then hung to dry.

Embodiment 2

[0027] The production method of non-adhesive sandpaper with a particle size of 800 mesh is:

[0028] The first step is to apply the primer layer:

[0029] Two sets of double-roll padding cars for primer coating are used, arranged 10 meters apart, and a 100°C hot air dryer is installed between the two sets of padding cars, and the coating working temperature of the padding cars is adjusted to 38~42°C;

[0030] Weigh out the amount of primer according to 80% of the total amount of glue used in the traditional primer layer + re-adhesive layer. When preparing, half of the primer will keep the same viscosity as the traditional one, and the other half of the primer will make it thicker. The viscosity is increased to twice the viscosity of the traditional primer (up to 2000cp);

[0031] Put half of the primer with the same viscosity as the traditional one on the first set of two-roll pads, and the other half with higher viscosity on the second set of two-roll pads, and the paper sub...

Embodiment 3

[0035] The production method of non-adhesive abrasive cloth with a particle size of 400 mesh is:

[0036] The first step is to apply the primer layer:

[0037] Two sets of double-roll padding cars for primer coating are used, arranged 10 meters apart, and a 100°C hot air dryer is installed between the two sets of padding cars, and the coating working temperature of the padding cars is adjusted to 38~42°C;

[0038] Weigh out the amount of primer according to 80% of the total amount of glue used in the traditional primer layer + re-adhesive layer. When preparing, half of the primer will keep the same viscosity as the traditional one, and the other half of the primer will make it thicker. The viscosity is increased to twice the viscosity of the traditional primer (up to 2000cp);

[0039] Put half of the primer with the same viscosity as the traditional one on the first set of two-roll pads, and the other half with higher viscosity on the second set of two-roll pads, and the pape...

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PUM

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Abstract

The invention discloses a production method of a coated abrasive tool without a complex adhesive. The production method comprises the steps: coating a primer layer, wherein the thickness of the primer is 80+ / -5% of the total thickness of a traditional primer and a complex adhesive layer, and the viscosity of the primer is 1-3 times greater than that of a traditional primer; an abrasive material is glued on the primer layer according to a conventional process, and then is suspended and dried. In order to improve the bonding force between the primer layer and the substrate layer, a pre-coating layer is coated on the substrate layer before the primer layer is coated. The production method provided by the invention has the advantages that the complex adhesive layer which is coated on the surfaces of particles of the abrasive materials, the grinding efficiency of the coated abrasive tool can be greatly improved, the working temperature can be reduced in the process of grinding, and the pollution on a grinding operating surface caused by the complex adhesive layer can be prevented; furthermore, the thickened primer layer can ensure that the abrasive materials can be firmly glued on the primer layer so as to fight against the impact force in the process of grinding; in addition, the viscosity of the primer can be improved to prevent a gumming phenomenon in the production process and affect the end product quality of the coated abrasive tool.

Description

technical field [0001] The invention relates to the production of coated abrasives, in particular to a production method of non-adhesive coated abrasives. Background technique [0002] Coated abrasives include abrasive belts or strips made of cloth, paper, film or other substrates. The current coated abrasives generally include a base material layer and a primer layer, an abrasive layer and an overcoating layer coated on the base layer in sequence. Add the fifth layer - super coating on the glue layer. Among them, the role of the compound layer is to firmly bond the abrasive particles to the substrate together with the primer layer to resist the impact force during grinding, so that the coated abrasive has a long-term grinding ability. [0003] The main component of the adhesive layer is phenolic resin, which has certain elasticity and viscosity. When grinding, the adhesive layer covering the surface of the abrasive will contact the grinding surface together with the abras...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00
CPCB24D18/0072
Inventor 王存银
Owner HENAN WANGPAI ABRASIVE CLOTH MFG
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