The process of making silicone molds
Release time:
2023-02-21 13:40
The choice of the form of mold opening and the choice of mold line is very important, one is for the convenience of taking the mold, the second is that the mold line should be selected in a way that does not affect the overall effect of the product, the third is not to affect the quality of the product, such as water features series products mold line position is too high, seal the mold line when the material to be more, the product cracking is easy to appear; fourth is to reduce the process operation process, such as opening half of the mold.
In order to prevent the flow of silica gel around the mold with a wooden square or board fixed in a regular range, open a piece of mold with a wooden board and putty to separate the first part of the open, requiring no gap between the putty and the mold species, putty surface smooth and flat. After the above work is finished, then apply Vaseline or spray release agent on the plaster mold or mold seeds, smooth products require a clean cotton cloth with Vaseline evenly coated on the mold seeds, keep it for 30 minutes so that the mold seeds fully absorb Vaseline, then wipe the surface of the mold seeds with a clean cotton cloth, and require a bright surface; and products with texture can be coated with Vaseline evenly according to the formula to mix the silicone. The silicone should be mixed according to irregularities. The silicone should be mixed in an irregular direction, so that the curing agent and silicone are fully mixed, to minimize the air mixed into the rubber, smooth products are best when the first layer of rubber coated with a vacuum, vacuum requirements -0.1Mpa to maintain 7-8 seconds.
The silica gel should be made in time after the preparation of the mold. Pour the glue with drip flow in the highest part of the mold species, let it flow naturally, where the flow is not in place, use the oil brush to brush in place, if it is a piece of mold silica gel not only fill the whole product and the clay should also be brushed evenly. Each product at least brush three layers of silicone each layer of silicone thickness of 1mm, in the process of brushing silicone, require each layer of curing before brushing another layer, in the brush the third layer to add a layer of gauze on top of the second layer to increase the strength of silicone. The thickness of the entire silicone part of the mold is controlled at 3-4mm according to the size of the product, and the width is not greater than 60mm. 20 minutes are required for the silicone to start solidifying.
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Method of making mold filling and splitting mold of mold silicone
How to make a piece mold or sheet mold: Apply the vacuumed silicone by brush or infusion method. If you are making a piece of mold or a piece of mold with the brush method, brush the product or model you want to copy with a layer of release agent or isolation agent before painting
Because unsaturated resin and resin products with peroxide curing agent after the reaction of resin will generate a lot of heat, the general resin curing time of 3 minutes, so 3 minutes after the mold as soon as possible, in order to prevent the silicone mold will not produce the phenomenon of burning mold.
Why does mold silicone have a low number of mold turnovers?
In the process of making the mold added too much silicone oil, silicone oil destroyed the molecular weight of silica gel, so the mold will appear to turn the mold less times not durable and other phenomena. If it is said to do small products with more complex patterns
The process of making silicone molds
The choice of the form of mold opening and the choice of mold line is very important, one is for the convenience of taking the mold, the second is that the mold line should be selected in a way that does not affect the overall effect of the product, the third is not to affect the quality of the product
Raw material of silicone mould
Silicone is becoming more and more popular because of its environmental performance, to understand the knowledge of silicone molds, we have to start from the silicone raw materials.
Notes on silicone rubber molds
b component is a catalyst, easy to moisture hydrolysis, so the lid should be used after the cover tightly.
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