Method of manufacturing a molded plastics article incorporating a blank of sheet
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United States of America Patent
Stats
-
Dec 1, 1987
Grant Date -
N/A
app pub date -
Nov 10, 1986
filing date -
Dec 18, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plastics article, for example a container lid, in which a blank 3 of sheet material is incorporated, as a label or diffusion barrier, as the article is moulded is manufactured in an injection mould the mould cavity of which contains a recess 7 into which the blank is received prior to injection of the plastics material. The blank is dropped from holder means externally of the mould cavity, preferably during relative closing movement between the mould halves 5, 6 and is caused to enter into the recess as it falls. The blank may be held in a guide track 12 or chute directed down into the mould cavity and be restrained by a stop 13 from falling until required to do so. Air may be applied to the blank as it falls to direct it into the recess.
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