Interpretation of the silicone mold mould opening several skills

Die mould opening several skills

There are three kinds of silicone mold cavity, respectively is brush model model, plane model, solid model (divided), perfusion model and BaoMo, these three mould method is different, the following several mould technique began to explain the silicone mold.

The first: brush model model, plane model, solid model (divided)

Brush model layers namely the silicone brush on the master pattern, brush a three-tier usually based on the multi-layer mould requirements, brush on the mode of pumping air into vacuum state, the first layer fringes brush reach the designated position, the second stick a piece of gauze, the third floor and then coated with silica gel, and then let it curing.

First to generic model of the commodity or besmear to brush a layer of mold release agent or agents, and then to take will be the amount of silicone and curing agent (best use electronic scale to weigh), stir, stir evenly for evacuation, evacuation time not too long. The silicone coating on goods (note: must be evenly daub) waiting for 30 minutes, colloidal gel reaction, will happen this again even to brush the second silicone, at this time will be posted a layer of gauze appearance or glass fiber weft cloth to add strength, and then after besmear to brush the third layer of silica gel and silica gel as dry as a chip, outside to do mold, mold can use gesso or resin etc.

Brush mould experience: besmear to brush a layer of silica gel in the future, the best is a layer of silica gel, silica gel crosslinking besmear again when not promptly posted gauze or glass fiber cloth, the reason is: usually besmear to brush the contrast of thin, especially compared to hard glass fiber cloth, the layer than simple to make mould lubrication, and then affect the role of imitation goods.

The second: perfusion model

Perfusion model suitable for lubrication of commodity complex mode, with a simple comparison with plastic board or glass, to mix the silicone and curing agent must be stirred evenly, pour a vacuum of silica gel directly into the above goods, after being silicone molding boring, take out the goods, mold molding.

Perfusion model experience: perfusion model usually choose hardness contrast of soft silicone to do die, so demoulding contrast is simple, and will not damage to the goods inside the silicone mold.

The third: BaoMo

Usually choose method and data is near the die, with plastic board or board that one chooses ark of gypsum will mold filling can, another choose resin coating, coating a layer of resin is placed a layer of glass fiber cloth, posted in besmear to brush, can repeat two or three layers.

BaoMo experience: do die outside must do die, because the mold piece do for specific volume, easy to deformation, make a mould to avoid mold deformation.