Mold Silicone Mold Opening Mode

The choice of mold opening form and the selection of mold line are very important. First, it is convenient for mold taking. Second, the mold line should be selected without affecting the overall effect of the product. Third, it does not affect the product quality. For example, the mold line position of the water series product is too high. When the mold line is filled, there are many materials, and the product cracking is easy to occur; the fourth is to reduce the process operation steps, such as opening half of the mold.

In order to prevent the flow of the silica gel, the mold is fixed in a regular range with wood or wood. When the mold is opened, the first part of the mold is separated by the wood and the sludge, and there is no gap between the sludge and the mold, and the surface of the sludge is smooth and flat. After the above work is completed, the plaster or mold is coated with Vaseline or sprayed with a release agent. The smooth product is required to be coated with Vaseline on a clean cotton cloth and evenly applied to the mold for 30 minutes. The species is fully absorbed with Vaseline, and the surface of the mold is wiped clean with a clean cotton cloth, and the surface is required to be bright; while the product with texture is uniformly coated with Vaseline, the silica gel can be adjusted according to the formula. When the silica gel is formulated, it should be stirred in an irregular direction, so that the curing agent and the silica gel are thoroughly mixed to minimize the mixing of air into the rubber. The smooth product is preferably vacuumed when the first layer of glue is applied, and the vacuum degree is required to be maintained at -0.1 Mpa. 7-8 seconds.

After the silica gel is prepared, it should be molded in time. Pour the glue into the highest part of the mold by trickling, let it flow naturally, and use the oil brush to put it in place. If it is a piece of mold silicone, not only the whole product but also the glue should be evenly brushed. Each product is brushed at least three layers of silica gel. The thickness of each layer of silica gel is 1mm. In the process of brushing silica gel, each layer is required to be cured before brushing another layer. When brushing the third layer, add one layer to the second layer. Layer gauze to increase the strength of the silica gel. The entire mold silicone part is controlled to a thickness of 3-4 mm according to the size of the product, and the width is not more than 60 mm of the product width. The silicone gel began to set for 20 minutes.