HY-220 RTV-2 Shoe Sole Mold Making Silicone Rubber
HY-220 is a kind of room temperature vulcanized silicone rubber in condensation type. It’s generally named as two part
silicone rubber , Part A is a flowable liquid, part B is the curing agent or catalyst . It’s mainly used for shoe sole mold making .
HY-220 silicone rubber is mainly used for shoe molds , sand casting , sole sampling , plaster models , simple products mold
making and so on .
|Model||Color||Mixing ratio (%)||Pot life (mins,
(hrs,under 25℃ )
|Hardness ( Shore A )||Tensile-
（After A/B mixed ,mPa.s）
＊An eceptional fluidity and good operability, easy to demold
＊Cure at room temperature
＊Temperature resistance of 150-180 Centigrade
Step 1: prepare the original molds
Make sure your original molds perfect. fix it on a board. And fix the original mold on a board , then used four piece of board
to enclose the original molds .
Step 2: Take 100 G parts A and add 3G parts B and mix them evenly.
＊Notes: Mold making silicon rubber is a kind of flowing liquid ,it contains two parts. Part A is a kind of flowing white liquid
and part B is the curing agent or catalyst .Pls follow the step strictly:
1.Weigh the two part exactly by electronic weight..
If not , for example add two much catalyst , the operation time will be too fast to operate ,which will cause inconvinience to
2.Mix part A and part B evenly.
Otherwise the silicon rubber will be partly solidified and this will give birth to difficulties in your final operation. What’s more,
the finished molds will meet a short life. All of these will cause a waste of silicon rubber.
Step 3: Vacuum pumping
Without exception, this step takes less than 10 minutes. Otherwise, it will cause cross linking reaction, and no more further
steps will be available.
Step 4: Pouring casting or Brush operation
＊Notes:1. For simple pattern products we suggest use pouring operation way , which will be very easy to operate and demould. Pourable silicone require light viscosity which will be easy to flow smoothly and easy to de-air .
2.For delicate pattern products we suggest use brushing operation way , which can copy the pattern exactly . Brushable silicone require high viscosity which won’t be easy to flow away and easy to brush .
- We sugges to set the silicone mold for another 12 hours after demould before put into large production .
25KG/drum vacuum packing for part A +1kg/ bottle catalyst for part B
200KG/drum packing for part A +1kg/ bottle catalyst for part B
- Twelve(12) months when stored underdry and cool place by original package under 25℃