Moulds
AssigneeDunlop Limited
InventorsGeorge Atkins, Philip J. Evans
Life of this patent
Estimating the term…
Abstract
A multi-piece mould, and a method of constructing it, for moulding wire reinforced rubber articles; the mould comprises material having a greater coefficient of expansion than said wire, and having a gasket of thermoplastic material which soften at the temperature of moulding, provided between at least two adjacent mould pieces, whereby during moulding the gasket is caused to flow by the expanding mould pieces and thereby compensate for the expansion of the mould material, of which the following is a specification.
Claims15
Apparatus for moulding wire reinforced rubber articles comprising a moulding surface said surface being a peripheral surface of a multi-piece mould, said mould being constructed of a material having a greater coefficient of expansion than said wire, at least one spacer element being provided between at least two adjacent mould pieces, said element comprising a material which is thermoplastic and softens at the temperature of said moulding, whereby during the moulding said element is caused to flow by the expanding mould pieces and thereby compensate for the expansion of the mould material.
Dependencies are inferred from the claim text.