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Some common problems and solutions of silica gel mold are described

2020-02-20

1. Why does the silicon gel of the mold burn the mold?


Because unsaturated resin and resin products with peroxide curing agent, the resin reaction will produce a lot of heat, the general resin curing time is 3 minutes, so after 3 minutes to demoulding as soon as possible, silica gel products manufacturers can prevent the phenomenon of silica gel mold will not produce burning.


2. Why does the silica gel of the mold have less times of mold turning?


Silica gel product manufacturers add too much silicone oil in the process of making molds, which destroys the molecular weight of silica gel, so the mold will appear less times of mold turning and not durable. If you do small products with more complex patterns, with a large hardness of silica gel to open the mold, there will be fewer times of mold turning phenomenon, because the silica gel will be very brittle, easy to break. On the contrary, if you build products and use small hardness of silica gel to do the mold, the result will also be unsatisfactory. Because silica gel is too soft, its tensile and tearing strength will be reduced, and the mold will be deformed, so the number of mold turns will be reduced. The quality of the mold glue itself is very good, there is no good or bad silicone, only suitable and not suitable. This will not happen if we use silica gel suitable for the hardness of the product to make the mold.


3. Production method of filling mold and fragment mold of silicone mold:


Operation method of slice mold or slice mold: silica gel product manufacturer pumps the vacuum silica gel to brush or perfusion method for construction. If you are to do the slice mold or slice mold has the use of brushing, brushing before you want to copy the product or model coated with a layer of release agent or isolator, and then the silicone coated in the product (note: Be sure to brush evenly) wait for 30 minutes, stick the surface with a layer of gauze or glass fiber cloth to increase strength, and then coated with a second layer of silica gel, such as silica gel dry, and then do outer mold, outer mold can use plaster or resin and other materials.


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Silicone waterproof sealing ring filling mould or filling mould operation method: filling mould or filling mould, is used to compare smooth or simple products, will you want to copy product or model, with plastic board or glass plate that will be a vacuum of silica gel directly into the products above, after being dry silica gel forming, take out the products, mould is molding (note: The perfusion mold generally uses soft silica gel to do the mold, so that the demoulding is easier and will not damage the products in the silica gel mold. The above is the whole process of the use and operation of the silica gel mold.


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