In-mould printing method for blow-molded thin-wall container

Abstract

The invention discloses an in-mould printing method for a blow-molded thin-wall container. By improving an in-mould printing mechanism and an operating method, an in-mould printing process of a blow-molded product is completed. The mechanism disclosed by the invention is simple in operation process, is high in reliability, can replace multi-degree-of-freedom mechanical hand equipment, and reducesproduction and operation cost. The in-mould printing method can continuously complete positioning and cutting of labels, automatically conveys the labels into a mould cavity, is simple in process, does not need to cut the labels in advance, and is high in production efficiency; and photoelectric positioning is utilized, so that displacement deviations can be prevented in a label cutting process, and therefore, production precision is high. A high-temperature-resistant sealing ring is utilized for realizing sealing, so that flaws are prevented from appearing on the surface of the blow-molded product. The labels are not transferred and conveyed all the time, and are not misplaced, so that a defective rate and a rejection rate are relatively low.

Description

technical field [0001] The invention relates to an in-mold printing method for blow-molded thin-walled containers, which belongs to the technology related to the surface labeling of plastic products. Background technique [0002] In-mold printing is also called in-membrane labeling. It is to put the printed trademark label image (with hot melt adhesive on the back) directly into the mold area of ​​the plastic molding machine, and combine the label and the container by blow molding or injection molding. Form a complete packaging container. As a new form of label packaging, in-mold printing has been popular in developed countries in Europe and America for many years. In recent years, it has also been favored by more and more printing substrate suppliers, label manufacturers and end consumers in China. In-mold printing is mostly used for trademarks and labels of food, daily chemical and other packaging, and plays a non-negligible role in logistics, anti-counterfeiting, identi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose an in-mold printing method for blow-molded thin-walled containers in view of the problems of high cost and complicated process steps in the current in-mold printing method, and solve the problem by improving the in-mold printing mechanism and operation method. Problems in prior art

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