Stack mould assembly

Details Stack mould assembly Stack mould assembly

2006-09-19

2006-09-19

Lee, Edmund H. (Department: 1732)

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

And means to form or reshape preform

C425S120000, C425S116000, C425S129100, C425S234000, C425S805000, C264S243000, C264S255000

Reexamination Certificate

active

07108496

ABSTRACT:
An injection moulding process for making a toothbrush involving a stack mould assembly of at least three mould blocks (1, 2, 3, 4) arranged for use along a longitudinal stack axis (A—A), with two end mould blocks (3, 4), and an intermediate mould block (1, 2), with part mould cavities (11A,21, 31, 41, 51) in the blocks. Plastic toothbrush skeletons are made in a cavity (11A,21, 31) between the intermediate block (1, 2) and one end block (3), then elastomer parts are made in a cavity (41, 51) between the intermediate block (1, 2) and the other end block (4). Preferably the intermediate block (1) rotates so its part cavity (11A) faces the other end block (4). Stack mould assemblies (1, 2, 3, 4) for this process are provided. The assembly (1, 2, 3, 4) provides a compact mould with high output.

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patent: 0463217 (1992-01-01), None
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