Pressure sensitive adhesive Spreader

Laboratories can use manual coating or small coaters for coating

Manual coating requires the use of tools such as coating rods, coating plates, etc., and different thicknesses of pressure-sensitive adhesives are prepared by replacing coating rods of different rod numbers

The speed of the coater depends on the drying capacity. It is said that the fast speed exceeds 100 m/min. The coiling method varies with the cutting method. There are sub-cutting and rewinding methods that are divided and coiled at the same time according to the specified width. There are ways of coiling according to the specified length, and then directly cutting with the mandrel. When cutting and rewinding, first roll into large rolls, and then cut into products. When the mandrel is directly cut, most of them use the developed automatic small roll coiler to roll into small rolls and then use the mandrel to directly cut into products.

The coating method of pressure sensitive adhesive is usually reversed roller coating method. The coating of base agent and release agent adopts engraved gravure roller coating and Mayer.bar coating method.

According to the quality of the product, the cutting and rewinding type is better, because the side does not stick to the hand and the oblique tear is less. However, on the other hand, this method is inefficient and easy to get involved in air bubbles when coiling. (The pressure of the pressure roller increases the tension, which can drive out air bubbles, but it is easy to produce telescope phenomenon) Therefore, most manufacturers still use the mandrel direct cutting type.