Mold, molding machine, and foamed molded body manufacturing method

A foamed molded body manufacturing method for manufacturing a foamed molded body configured from a foamed synthetic resin, employing a mold, 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 intermediate portion in the axial direction 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, the foamed molded body manufacturing method comprising:
• a gas-permeable member and gas-impermeable member placement process of disposing the gas-permeable member inside the cavity of the mold so as to cover the gas discharge hole, and disposing the gas-impermeable member on the gas discharge hole side of the gas-permeable member so as to the face the gas discharge hole;
• and
• a foam molding process of foaming a foamable synthetic resin raw material inside the cavity after the gas-permeable member and gas-impermeable member placement process,
• wherein:
• the gas-impermeable member is configured in a sheet form extending along a gas discharge hole side face of the gas-permeable member;
• and
• the gas-impermeable member has a thickness of from 0.05 mm to 0.2 mm, a tensile strength of from 30N/15 mm to 90N/15 mm as specified by JIS-Z-0237, and an elongation percentage of from 1% to 10% as specified by JIS-Z-0237.