Common problems and solutions of roller coating


Common problems and solutions of roller coating

 

Phenomenon

Causes

Countermeasures

The paint on the front end of the paint is raised

Too much coating

Advance the metering wheel a little
, reduce the speed of the reverse wheel or increase the speed of the forward wheel

The work object is bent and deformed

Review of work objects

The reverse wheel of the rear group is coated and the wheel is lowered too low

Raise the coating wheel a little higher

The thickness of the work is uneven

Review the thickness of the workpiece

The viscosity of the paint is too high

Reduce paint viscosity

The coating surface is uneven

The workpiece is deformed

Review of work objects

The work is sanded unevenly

Re-sanding to make even

The rubber wheel is damaged

Replace the rubber wheels

There are horizontal lines on the coating surface

The work itself transforms into a wave

Review of work objects

The rubber wheel is damaged

Replace the rubber wheels

The reversal coating wheel is too low

Raise the coating a little higher

The coating surface has a straight line

The rubber wheel is damaged

Replace the rubber wheels

The flatness of the paint is not enough

Replace the paint with better leveling

The speed of the reverse coating wheel is lower than that of the forward coating wheel

Increase the speed of the reverse coating wheel or decrease the speed of the forward coating wheel

An orange surface appears on the coating surface

Too much coating

The metering roller is moved forward a little, and the speed of the coating roller is reversed in the rear group

The viscosity of the paint is too high

Replace low-viscosity paints or adjust paint viscosity with thinners

The flatness of the paint is not enough

Replace the paint with better leveling