Pad printing silicon rubber

Brief description of pad printing silicone rubber
Pad printing silicone rubber as a carrier which transfer patterns on the steel plate to the toys products surface.

Applications of pad printing silicone rubber
Pad printing silicon rubber is mainly applicable to the printing of irregular patterns on plastics toys, electroplating products, electronic toys, trademarks, artwork gifts, and stationery, etc.

Brief features of pad printing silicone rubber:
1. resistance to deformation, high-temperature
2. high printing times
3. good aging resistance
4. exceptional elasticity
5 great printing effect

Model code:
Model//Hardness
(Shore A)// Mixing Ratio
(%)//Operation
Time (h)//Demould Time
(hrs)
HY-901# 25--28 2--3 0.5 2--4
HY-902# 25--28 2--3 0.5 2--4
HY-912# 25--28 2--3 0.5 2--4
HY-916# 25--28 2--3 0.5 2--4
HY-918# 18--20 2--3 0.5 2--4

Operation Instruction for pad printing silicone rubber:
Pad printing silicone rubber is two-component silicone, part A is liquid silicon rubber, part B is catalyst. The usual mixture of silicone rubber and catalyst is 100: 2 or 100: 3. E.g. we take 100g of liquid silicon rubber and 2g-3g catalyst, mix them and pour it to your mold. A fter 2-4 hours, you will get a Pad printing silicone rubber.
1) At first, prepare all the tools like the pad mold, a cup for mixing, and a glass stick. Clean the pad mould with detergent, and dry the pad mould with an air-gun or cloth, then brush a lay of mold release agent.
2) For second step, adjust the ratio between the silicon rubber and silicon oil according the customer’s requirement. If customers want to print large pattern, soft silicon pad need and silicon oil need to add, otherwise, hard silicone pad need, less silicone oil to add or none.

FAQ about pad printing silicon rubber:
1.Why the silicon pad is non-durable？
1)This problem is caused not by the liquid silicon rubber itself, but in the process of filtering, the filtering handled not properly and impurities are not all filtered out; or in the process of packing as containers not cleaned thoroughly.
2)As the silicon oil will break the molecular chain of the silicon rubber. More silicon oil added, softer the pad printing will be, meanwhile nondurable and easy ageing it will also turn to be.
3)Some customers do not know well about the performance of silicon rubber. Actually, the durability of printing pad is closely related to the size of printing pattern. Some factories do not want to take the trouble to change the printing pad. While in fact, for large pattern, large silicone pads should be used, otherwise, use small one.(Generally, the ratio of the silicone pad to printing pattern is 3:1)
2. Why the printed pattern is incomplete or not clear?
1)If the silicon pad is too hard while the pattern is very delicate or small, the printing patterns will be incomplete or not very clear, for in that way the silicon pad could not adsorb the printing ink from the steel plate well. If your pattern is very delicate or small, please use soft silicon pad for pad printing.
2)If the percentage of water in the ink is very high, the printing pattern also will be incomplete, and spot may appeared. For this situation, please clean your ink box, or change the printing ink or Tianna water.
3. Why the silicon pad did not absorb the ink?
Any silicon pad or liquid silicon rubber could absorb ink well. If large patterns or big letters need to print, the printing pad will for sure absorb ink well. For small letters, please do not use hard silicon pad, as it could not absorb the printing ink thoroughly from the steel plate.
4. Why the silicon pad can not transfer the printing pattern well?
It is normal phenomena that every two out of ten products have this problem if the plastic toys are not spray painted. As in the production process, mold release agent will be sprayed onto the surface of the steel plate for eevery dozen products, and there will be some mold release agent left on the surface of the first one or two product. Please use Tianna water or face-clean water to clean the products before used for pad printing.