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BMC/SMC Compression Plastic Mould

SMC mould design follows similar rules as for any other production process with the plastic industry. But before you build a SMC mould, there are certain things need to be considered.The first and most important is shear edge. Mould shrinkage There are two shrinkage for SMC mould. Low profile...

Description

BMC/SMC Compression Plastic Mould

  • SMC mould design follows similar rules as for any other production process with the plastic industry. But before you build a SMC mould, there are certain things need to be considered.The first and most important is shear edge.

  • Mould shrinkage
    There are two shrinkage for SMC mould. Low profile class A part have a shrinkage of -0.05% to 0%.

  • Temperature system
    SMC and BMC need heating channel instead of cooling. The working temperature of the mould is usually at 140 degree to 160 degree. When designing the temperature systme it is important to keep surface temperature within very close parameters. Mould will fill easier and produce parts with less warpage, and uniform surface appearance. The The mould can be heated by steam, or oil, or electricity or even high pressure water.

    vacuum system
    To achieve a better appearance of part will require vacuum assistance. For more information please contact our techinician

  • Production SMC mould
    Production mould must be of highest quality and capable of making parts consistently and economically. Ningguang Mould will help you to achieve that.


compression mould


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    Agglomerated prepreg made of chopped glass fiber and unsaturated polyester slurry. It is suitable for molding by molding, transfer molding, injection molding and other processes. The resulting products have good mechanical properties, high dimensional stability, good surface finish, excellent water resistance, oil resistance, corrosion resistance, heat resistance, and excellent electrical properties, especially Arc resistance can reach about 190s. It is formulated into a resin slurry according to the formula. The main components are the same as the sheet-shaped molding compound. The filler is increased. Generally, no thickener is needed. Then, the resin slurry and the chopped glass fiber (length about 3 to 25 mm) are fully mixed. Mainly used in electrical appliances, motors, radios, instruments, machinery manufacturing, chemical equipment, construction, transportation, national defense and other departments.

SMC compression molding


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Typical products:

Electrical components (insulator, switch 29, meter box, circuit breaker housing, terminal block, various types of household or commercial electromechanical product housing), automotive components (front light reflector, rear door, speaker housing, etc.), meter housing , Audio equipment shell.

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