Patents Assigned to Peerless Cinpres Limited
  • Injection moulding apparatus
    Patent number: 4740150
    Abstract: Apparatus for producing an injection moulding of plastics material comprises means for introducing a supply of plastics material, passage means for communicating the supply means to a mould space, and means for introducing a pressurized gas into the plastics material filling the mould space whereby the gas creates a gas containing cavity in the plastics material and for thereafter relieving the gas pressure within the gas containing cavity before the mould is opened.
    Type: Grant
    Filed: May 12, 1987
    Date of Patent: April 26, 1988
    Assignee: Peerless Cinpres Limited
    Inventor: Matthew E. Sayer