1. Stir silica gel and curing agent evenly. The mold silicone appearance is a flowing liquid, the A component is silicone, and the B component is the curing agent. Example: Take 100 grams of silica gel, add 2 grams of curing agent (Note: silica gel and curing agent must to stir evenly, if not stirred evenly, the mold will appear a piece has been cured, a piece has not cured, silica gel will appear dry curing uneven condition will affect the service life of the silica gel mold and the number of mold turning, and even cause the mold scrap.
2, vacuum exhaust bubble treatment: silica gel and curing agent stirred evenly, vacuum exhaust bubble link, vacuum time should not be too long, under normal circumstances, do not exceed ten minutes, vacuum time is too long, silica gel immediately cured, resulting in crosslinking reflection, so that the silica gel becomes a piece, can not be brushed or poured, so that the waste of silica gel, can only pour the silica gel into the trash, and then take the silica gel to do.
3, brushing or operation process: the silicone that has been emptied and discharged through the bubbles is brushed or perfused in the form of brushing or perfusion. Pour on top of the product (Note: The product or model to be copied before pouring the silicone must be hit with the release agent or separator). Then the silicone is brushed on the product, the brush must be even, and after 30 minutes, paste a layer of gauze weft cloth to increase the strength and tensile force of the silicone. Then apply a layer of silicone and paste another layer of gauze and weft cloth, so that after two times, you can do it. Only in this way, the service life and the number of mold turns that are opened will be relatively improved, which can save costs and improve efficiency.
4, the production of the outer mold: the general method and material used is to be around the mold, surrounded by plastic board or wooden board, a plaster will be filled with mold cabinets, another way to use resin brushing, brush a layer of resin to paste a layer of glass fiber cloth, and then brush and paste, repeated two or three layers can complete the mold of the outer mold.
5, the operation method of the filling mold or perfusion mold: the filling mold or the perfusion mold is used for a relatively smooth or simple product, there is no mold line to save labor and time, that is, the product or model you want to copy, surrounded by a rubber plate or glass plate, the silicone that has been evacuated is directly poured into the product, and after the silicone is dried and molded, the product is taken out, and the mold is molded (Note: The perfusion mold generally uses the hardness of the softer silicone to make the mold, so that the release of the mold is easier and will not damage the product inside the silicone mold).
6, shard mold or sheet mold operation method: the vacuum of silica gel to brush or pour method for construction. If you are doing a piece mold or shard mold has the use of brushing method, before brushing the product or model you want to copy the brush on a layer of release agent, or isolating agent, and then brush the silicone on the product (Note: be sure to brush evenly) wait for 30 minutes, paste a layer of gauze or glass fiber weft cloth on the surface to increase the strength, and then paint the second layer of silicone and other silicone after drying, and then do the outer mold, the outer mold can use gypsum or resin and other materials.
