injection moulding features
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Injection Moulding
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Injection point
The point where the plastic
entered the mould.
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Ejection points
Plastic must be ejected square
to the mould
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Tapered sides
Tapered sides allows the
product to be removed from
the mould. Taper can be as
little as 1:200
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Spark Erosion
This gives the surface of the
plastic a textured finish
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Location Points
ocation points or bosses areused to locate parts together.
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Break lines!sed as an aesthetic feature"
to give strength and rigidit#
and to disguise an# blemishes.
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Webs and Ribs
These give strength and rigidit#
to the product.
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Material Information
!seful for when the product is
rec#cled.
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Date symbol
!seful for qualit# assurance
and to trace products if there
are problems or faults.
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Produces large quantities of plastic components quickly and
very accurately.
The cost of tooling and moulds is very expensive therefore it is
important to sell large numbers of the products being
manufactured to recover initial set up costs.
Solid intricate form / commonly used to mould thermoplastics /
split lines / injection points / ejector points / shrinkage / draft
angle / surface texture / webs and ribs
Injection Moulding
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