Technical datasheet of liquid pad printing silicone rubber
Model Appearance Viscosity (cs) Hardness (Ao) Tensile Strength (kgf/c) Tear Strength (kgf/cm) Shrinkage (%) Elongation (%) Mixing Ratio(%) Operating Time(H) Curing Time(H)
HY 918 White 18000~20000 22~24 ≥32 ≥20 ≤0.3 ≥500 2~3 0.5 2~4

Model Color Mixing ratio (%) Pot life (mins) Demould time (hrs) Hardness(A0) Tensile-stength (N/m2) Tear-strength (N/mm) Viscosity (cps) Elongation (%)
HY 928 red 9:1 30 4±1 30 5.5 27 17000-20000 500


5. FAQ of liquid pad printing silicone rubber
Why the silicon pad is non-durable？
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.
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.
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)