What is in-mold labeling

The working principle of the in-mold labeling machine, the in-mold label embeds the printed label in the container during the blow molding process, so that the label and the container are integrated. The basic process of in-mold labeling in the blow molding or injection molding process is: stack the pre-printed in-mold labels (pre-label and back label) in a single sheet, and place them on the two labels of the in-mold labeling machine. Inside the box. With the opening of the bottle mold, the front label and back label are sucked up by the manipulator. The label is printed on the inside and the solid adhesive side is placed in the mold on both sides. The vacuum holes on the mold firmly absorb the label in the mold. When the raw material of the plastic container is heated and sags like a hose, the mold with the label closes quickly, and air blows into the hose to make it close to the mold wall. At this time, the temperature in the entire mold is still relatively high and close to The label-solid adhesive of the prototype container began to melt and bond with the plastic container. When the mold is opened again, the plastic container is formed, and the label and the container are integrated