This can due to three ways: 1,add one piece of cloth when we produce silicone mold. 2,Choose the right hardness to produce silicone mold according to the size of the molding products, if we produce big size products we should choose the high hardness silicone, so that we can protect the tear strength. 3,We cann’t put too much silicone oil into silicone rubber, if we need to, the rate should between 5%-10%.
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