Roll To Roll Process

Short description: curler making necessities for aluminum guide rolls

1. the rollers of the aluminum guide rolls must be sufficiently rigid to ensure that the bending deformation does now not exceed the permissible fee beneath heavy masses.
 
2. the surface of the curler should have sufficient hardness. it's far generally required to attain above 50 degrees hrc and has strong corrosion resistance. the coating has anti-flaking potential to make sure that the running floor of the curler has suitable wear resistance and corrosion resistance.

Three. the working floor of the aluminum guide roller have to be finely machined to make certain dimensional accuracy and surface roughness.

The roughness must be above a0.sixteen, and there must be no pores or grooves. the wall thickness of the running floor of the roller must be uniform, in any other case the temperature of the curler floor might be choppy, so that it will affect the quality of the product.

4. the cloth of the curler must have true thermal conductivity. normally, chilled cast iron is used. in unique cases, cast metal or molybdenum-chromium alloy metal can be used to obtain fast and uniform heating or cooling.

Why is the aluminum manual roller deinked? this is due to the fact offset printing is a printing method involving water. the presence of water way that ink emulsification occurs, forming a hydrophilic layer on a easy rubber curler, inflicting the aluminum guide curler to be deinked.

The solution is to first shovel the emulsified ink layer, smooth the dehydrated aluminum guide curler with fuel and clean the hydrophilic layer and the emulsified ink layer, and then blend the 5% sodium hydroxide aqueous solution with the pumice powder to shine the floor of the aluminum manual curler. the hydrophilic layer is removed to restore the oleophilic properties of the aluminum guide rolls.

On the equal time, we should additionally take note of the ratio of the offset water hopper answer, manipulate the ph value of the water hopper answer, and use the minimum quantity of dampening way to lessen the emulsification diploma of the ink under the premise of not being dirty.

The gum arabic and other surfactants must not be introduced in extra.

The rollers of the aluminum manual rolls have to be sufficiently rigid to make certain that the bending deformation does now not exceed the permissible fee underneath heavy loads.

The working surface of the aluminum manual roller must be finely machined to make certain dimensional accuracy and surface roughness. the roughness need to be above a0.16, and there need to be no pores or grooves. the wall thickness of the working surface of the curler need to be uniform, in any other case the temperature of the roller floor could be uneven, in an effort to have an effect on the great of the product.

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