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Plastics
are our business.
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free, no hassle quote. |
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COMPRESSION MOLDING |
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PROCESS |
This was the first plastic processing method to gain large scale commercial usage. In it, a slug of hard plastic is pressed between 2 heated mold halves. This is generally done with vertical presses as opposed to the horizontal presses used for injection and blow molding. After being formed, the part is air cooled. |
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RAW MATERIALS |
Thermoset plastics are used in this
process. These materials cannot be remelted as can their
thermoplastic cousins. The most widely used plastic is phenolic,
commonly known as "Bakelite". |
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TOOLING |
Machined steel. |
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COST |
Tooling & parts moderate. |
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ADVANTAGES |
Makes parts which can be subjected
to high heat, since the raw material will not remelt. Equipment is
readily available. |
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DISADVANTAGES |
High scrap costs. Relatively slow
cycle times. |
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EXAMPLES |
Radio & appliance knobs, ash trays &
electrical parts. |
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CLICK HERE for summaries of the
most widely used Plastic Processing Methods
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