Compression moulding is almost always used for shaping thermosetting plastics. The process requires plastic to be placed into a mould cavity where it is heated. When it plasticises it is pressed into shape by a heated punch.
Scrap rates are low because there are no sprues or runners, unlike injection moulding. Initial tool costs are high but tool wear is low, making it ideal for long batch runs. Low material shrinkage meaning it is good for products with a small tolerance. Curing time is between 0.5 and 3 minutes, reducing production time in comparison with injection moulding.
Typical products include plugs, wall sockets, light switches and smoke alarms.
Can you name any other products that have been compression moulded? What types of material can be compression moulded?
We need multi cavity mould for PTFE encapsulated product through compression moulding system for bulk production.
ReplyDeletePlease advice.
Arnab Roy Chowdhury
Technocrats
htpe_tc@yahoo.com