factory price rtv 2 liquid rubber for printing pads

详情

Usage of rtv 2 liquid rubber for printing pads:

Rtv2 liquid rubber is mainly applicable for the printing of irregular patterns on plastics toys,

electroplating products, electronic toys, trademarks, artwork gifts, and stationery etc.

Description of rtv 2 liquid rubber for printing pads:

The silicone pad is a carrier which transfers the patterns from the steel plate onto the products surface.

It has the advantage of good printing effects, good quality, good resilience, and without any impurity.

Operation Instruction for rtv 2 liquid rubber for printing pads:

1. Firstly, clean the mold with detergent, and dry it by a piece of cloth or an air gun and then coat the mold with a layer of release agent.

2. Generally, the ratio of pad printing silicone rubber and the silicone oil depends on the size of pattern which customer needs to print. The larger the pattern is, the softer the printing pad should be, and more silicone oil needs to add.

 Contrarily, if a silicone pad with high hardness needed, silicone oil should be added less or none. Generally. the hardness of the printing pad is *5A~**5 A. If too much silicone oil added in the silicone rubber, the printing pad will be too soft, and this will limit the printing times. The silicone oil will destroy the molecular chain of the silicone rubber, no matter how supreme quality the silicone rubber is.

And therefore, the printing pad will be abrasion intolerant and solvent intolerant and easy ageing.

3. General mixing proportion is as follows: add *0g silicone oil into **0g silicone then hardness of *0A printing pad we get, which is suitable for the pad printing for alloy car and other products with small patterns and contact areas. If a big contact surface or a soft silicone pad needed, the mixing proportion between the silicone and the silicone oil can be **0:*****0:*0. But please note that the more silicone oil added, the softer the silicone pad will be, which will also reduce printing times, abrasion resistance and solvent resistance. Therefore, cost increase and material waste will occur.

4. Relation between the amount of the curing agent added and the chemical reaction of the silicone is as follows:

Mix **0g silicone and *0g silicone oil sufficiently and evenly.

Then add the curing agent which is 2%*3% of the total weight of the silicone and the silicone oil, keep stirring for **3 minutes, and then vacuuming to remove the air bubbles. It is better to finish vacuuming within *0 minutes. If it takes too long, it may cause fast curing and affect the quality of the printing pad