Patent ID: 6893587

Claim:
A method of manufacturing a product, comprising: filling a resin containing a foaming agent into a mold cavity by injection within a time period from a time point just before completion of mold clamping to a time point after the completion of mold clamping; allowing the resin filled in the mold cavity to form a skin layer over a surface of the resin; retracting a movable mold to provide a predetermined cavity clearance between the movable mold and a stationary mold to cause the foaming agent to foam; and cooling the resin filled in the mold cavity to form a foam-molded product having a tight skin layer surface and an inside portion in a foamed state, wherein an amount of the resin to be filled into the mold cavity at the time point just before the completion of the mold clamping is between 50% and 80% of the total amount of the resin to be filled in the mold cavity.