Abstract:silicone molds are the quick way to make molds.the process as follows:prepare original product,make frame and fixed it.then weighing and stir the silicone and catalyst.next pouring the silicone to every parts of mold after de-air by vacuum machine. Finally, remove the frame after silicone was cured completely,and trimming the mold.
Tools and materials:silicone and catalyst,plastic board,electronic scale,caps,sellotape,glass bar,releasing agent,scissor,knife,Hot melt glue guns and Spatter.
Dispose the original product
Deburred of the original product by knife,Be careful not to damage the surface and parts.
Spray the releasing agent on original product,Pay attention to the deep hole or narrow slot.
Stick the frame by hot glue guns,to prevent the silicone outflow from the gap.
To increase about 20-40mm according to the size of original product ,so that better for pour the silicone.
Put and fix the original product into the middle of location of frame.
Weighing silicone and catalyst
Weighing the part A and part B according to the ratio that supplied by the factory.
Please be sure that mixing by weight ,not volume.
Mixing and stirring
Mix the silicone and catalyst according to the weight.
Be sure to Stir evenly,otherwise,will effect the time of duplication.
De-air by vacuum machine
De-air by vacuum machine after stir evenly.
The time about 10mins,because too long time will produce cross linking curing reaction.
Pour the silicone into frame
pour the silicone after de-air.
Pour the silicone over the original products,and pour more silicone about 20-50mm on the top of original products.
Blowing bubbles by Spatter on the surface of silicone.
Waiting for curing
Put the frame away ,and waiting for curing.
The optimal temperature of curing about 20-30℃.
can heat curing by the oven if the temperature below than 0℃.
Trimming the molds
Find the remarks and cut open the molds after curing.
In order to prevent silicone molds will deformation,Please ensure that demold without affect by outside force .
Trimming the silicone molds by scissor.
Complete the operation
All progress of make molds are complete after trimming.
Suggestion:please use the silicone mold after 24hrs,to prevent deformation.