Manufacture of plastics articles

摘要

In the manufacture of an article in a multi-segment mould of fusible material any spurious formation arising during manufacture is minimised by positioning the mould segments in a desired configuration and exposing adjacent edge regions to laser beam irradiation to unite the segments at said edge regions. One mould segment edge may be provided with a spurious rib formation 14 of fusible material, the adjacent segment edge being provided with a channel 15 to receive material flowing from said ribs on irradiation. Alternatively one segment edge may be provided with a deformable abutment 25 which is deformed in contact with a plain segment edge 22 prior to moulding.