MOLD, MOLDING MACHINE, AND FOAMED MOLDED BODY MANUFACTURING METHOD

摘要

A mold, a molding machine, and a foamed molded body manufacturing method are provided that are capable of more reliably preventing ingress of foamed resin into a gas discharge hole using a gas-impermeable member and capable of adequately discharging gas inside the cavity to the cavity outside through the gas discharge hole during foam molding, and that are also capable of achieving good design characteristics in a foamed molded body. A gas discharge hole 5 is provided at a cavity 4 inner face of a mold 1 and discharges gas inside the cavity 4 to outside the cavity 4. A gas-permeable member 6 is disposed inside the cavity 4 of the mold 1 so as to cover the gas discharge hole 5, and a gas-impermeable member 8 is disposed on the gas discharge hole 5 side of the gas-permeable member 6 so as to face the gas discharge hole 5. A portion of the gas discharge hole 5, spanning at least from axial direction intermediate portion of the gas discharge hole 5 to the cavity 4 side of the gas discharge hole 5, is configured with a tapered profile portion 5a that increases in diameter on progression toward the cavity 4 side.

主权项

1. A mold employed to manufacture a foamed molded body configured from a foamed synthetic resin, the mold comprising:
a gas discharge hole that is provided at a cavity inner face of the mold and that discharges gas inside a cavity to outside the cavity; a gas-permeable member that is disposed inside the cavity so as to cover the gas discharge hole; and a gas-impermeable member that is disposed on a gas discharge hole side of the gas-permeable member so as to face the gas discharge hole, wherein a portion of the gas discharge hole, spanning at least from an axial direction intermediate portion of the gas discharge hole to a cavity side of the gas discharge hole, is configured with a tapered profile portion that increases in diameter on progression toward the cavity side.