Patent ID: 8303750
Filing Date: 2012-11-06
Classification: B29C

Abstract:
1. A method of manufacturing an air mat, wherein a cushion part having a plurality of air pockets formed therein for containing air at the insides thereof is coupled with a lower sheet disposed on the lower surface of said cushion part, said method comprising the steps of: preparing a lower mold having a plurality of air pocket-molding recesses each having a given depth, for molding said cushion part; said lower sheet adapted to be coupled with said lower mold; and a cover adapted to be seated on the said sheet; conducting a slush molding process by pouring a resin composition into said lower mold for molding said cushion part; coupling said lower sheet to said lower mold and mounting said cover on said lower sheet, for covering the entrances of said plurality of air pocket-molding recesses of said lower mold; and, conducting a rotational molding process by rotating said lower mold coupled with said lower sheet and said cover thereon by means of a rotational molding machine, for bonding said cushion part and said lower sheet on said lower mold as an integral body,