Patent ID: 6878322

Claim:
A method for manufacturing rubber plate having colored patterns thereon, comprising the following steps: step 1: preparing a heat transfer decal having a colored pattern thereon, the pattern including a circular mark having a blank portion and a colored frame enclosing the blank portion, the colored frame including a plurality of slits defined through the decal and the slits located at corners of the colored frame; step 2: preparing a male mold and a rubber plate put on the male mold, at least one protrusion extending from the rubber plate, the decal put on the rubber plate; step 3: preparing a female mold having a recess defined therein, a configuration of the recess being the same as the rubber plate and the heat transfer decal, at least one concavity defined in an inner surface of the recess in the female mold, a width of the colored frame being equal to a depth of the at least one concavity, and step 4: pressing the decal on the rubber plate between the male mold and the female mold at a high temperature, the rubber plate engaged with the recess of the female mold and the at least one protrusion engaged with the at least one concavity, the pattern attached on the rubber plate and the colored frame attached on a periphery of the at least one protrusion of the rubber plate.