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Operation instructions of mold making silicon rubb...

Do you know the peration instructions of mold making silicon rubber?   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 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   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 .   3.We sugges to set the silicone mold for another 12 hours after demould before put into large production .

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