Abstract: A method of labeling rubber component bags is provided. The method includes the steps of: (1) forming a label having a first side with an adhesive and a second side; (2) applying a first identifying marker to the second side of the label; (3) adhering the label to a bag adapted to hold a component to be used in making rubber; (4) inserting the bag and the label into a rubber mixing machine used to form the rubber mixture; and, (5) mixing the label into rubber mixture. Labels formed according to the method of this invention melt and disperse throughout the rubber mixture without negatively affecting the properties of the rubber mixture.