Operation Instructions of Mold Making Silicone Rubber
Do you know the peration instructions of mold making silicon rubber?
Step 1: prepare the original molds
Make sure your original molds good, 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 inconvenience
to operate .
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
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 .
3.We suggest to set the silicone mold for another 12 hours after demould before put into large production .