| 摘要 |
<p>The present invention provides a method of manufacturing foam, including the steps of sealing a mold by providing a lower mold having an arbitrarily- shaped molding surface, and then sequentially placing a middle mold having at least one arbitrarily-shaped protrusion formed on one side thereof or both sides thereof and an upper mold having an arbitrarily-shaped molding surface on the lower mold; simultaneously forming an upper preform and a lower preform, which are prevented from foaming, by charging a foaming material in an inner molding space of each of the upper mold and the lower mold, which are divided by the middle mold; opening the mold and removing the middle mold from the mold; placing an interface material in grooves formed in the preform by the protrusion of the middle mold such that the upper preform and the lower preform are prevented from cross-linking with each other; and simultaneously cross-linking and foaming the upper preform and the lower preform by sealing the mold.</p> |
