Video: Making a Plastic Bottle: Extrusion Blow Moulding (EBM)
Video: Making a Plastic Bottle: Extrusion Blow Moulding (EBM)

The Extrusion Blow Moulding process involves extruding a melted plastic polymer, typically HDPE or LDPE into a hollow tube or “Parison”. During the Extrusion Shuttle Blow Moulding process two moulds shuttle back and forth to capture a continuously extruded parison. Learn how in this short video.

During the Extrusion Blow Moulding Process, or EBM, Moulds are shuttled back and forth to capture a continuously flowing tube of plastic called a "Parison".

Once the moulds capture the parison, it is cut so the mould can shuttle or move to the side to the next station, where a blown is introduced into the mold cavity containing the parison.

The blow pin blows pressurized air into the parison, forcing the still malleable plastic to expand into the shape of the mold.

The excess plastic or “Flash” remaining on the top and bottom of the finally formed container is then trimmed. The excess on the top is called the moil and the excess on the bottom is called the tail.

The final bottle or jar is then conveyed to a final quality check, where pressurized air is blown into the sealed container to check for leaks.

Find out more about additional blow moulding processes today to include Injection Blow Moulding and Injection Stretch Blow Moulding.

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Posted by Edward
on 05/11/2018
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