Mould tool and method for resin transfer moulding

Details Mould tool and method for resin transfer moulding Mould tool and method for resin transfer moulding

2006-10-31

2006-10-31

Lee, Edmund H. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

C264S275000, C264S328100, C425S215000, C425S542000

Reexamination Certificate

active

07128857

ABSTRACT:
A mould tool for use in resin transfer moulding operations is provided, the tool comprising one or more shape-defining portions which together define the shape of a component to be manufactured within the tool, and an inlet path for allowing resin to be injected into the mould tool. The mould tool further comprises at least one bleed cavity and a removable closure member, the closure member being capable of closing the bleed cavity and, in use, substantially sealing the bleed cavity to prevent fluid egress from the bleed cavity. A method of resin transfer moulding is also provided. The method comprises at least the steps of: Providing a mould tool having at least one resin injection inlet, at least one bleed cavity and a closure member, the closure member being capable of closing the bleed cavity and, in use, substantially sealing the bleed cavity to prevent fluid egress from the bleed cavity; Placing a pre-formed component in the mould tool and sealing the bleed cavity; Applying a vacuum to an inlet to remove air from the mould tool; Injecting resin through an inlet into the mould tool, any remaining air being forced into the closed bleed cavity by the resin; Heating the mould tool to cure the resin.

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