Mold and method for molding resin foamed molding

A mold characterized in having a cavity enclosed by at least an upper mold and a lower mold, the mold designed for resin foam moldings including the cavity comprising:

• a cavity main portion to be supplied with foam resin material;
• and
• a cavity end portion, disposed above the cavity main portion, to be filled with expanding resin which starts foaming in the cavity main portion,
• a cavity side portion communicating with one end side of the cavity main portion,
• wherein the cavity end portion is provided at a vertical surface thereof with a vent hole,
• wherein an annexed member having an air passage in communication with the vent hole is detachably installed,
• wherein at least a part of a sectional dimension of the air passage is smaller than that of the vent hole,
• wherein the vent hole is covered at the cavity side portion thereof with an air permeability material,
• wherein the vent hole communicates with an external atmosphere through the annexed member, and
• wherein the mold further comprises inside thereof a core mold that comprises wall portions which each constitute a respective vertical surface of the cavity end portion, and the vent hole is provided at a respective wall portion of the core mold,
• wherein the vent hole is provided at the respective vertical surface of the respective wall portion in an opposite side of the cavity side portion;
• and
• the vent hole is provided at the respective vertical surface farthest from the cavity side portion.