In-mold label is mainly used for blow molding and injection molding of PP materials. Before blowing and injection molding, stick the printed in-mold labels into the blowing and injection mold cavity, the special glue of in-mold labels melts through the action of high temperature and high pressure, then the in-mold labels with the surface of the bottle or injection molding melt into one, when the mold is opened, a beautifully printed bottle or injection is finished a one-time processing.