Three-dimensional gilding method for surface of plastic packing material

Abstract

The invention discloses a three-dimensional gilding method for the surface of a plastic packing material. The method is characterized in that UV gloss oil coated on the surface of the plastic packing material is irradiated twice by ultraviolet rays with different energies, and the smoothness of the gloss oil surface obtained by the two times of irradiation is different, so that silk-screen printing can be performed on the gloss oil surface after the first time of irradiation; and after the second time of irradiation, silk-screen printing ink is subjected to gilding, and a gilding material cannot be attached to the gloss oil surface. The method has the advantages that (1) the gilding effect on the surface of the plastic packing material has three-dimensional impression, and the gilding material is accurately gilded on three-dimensional lines of silk-screen printing, so that the impression is more delicate and finer; (2) gilding residues and flaws except printing lines are not generated, and the yield is extremely high; (3) large-scale mass production printing can be realized by adopting common offset printing, silk-screen printing and gilding equipment, the production cost is low, and the efficiency is high; and (4) the problems that the definition of small characters and line size and thickness cannot be unified in the gilding process can be well solved.

Description

technical field [0001] The invention relates to the technical field of printing of plastic packaging materials, in particular to a three-dimensional printing method for the surface of plastic packaging materials, especially a three-dimensional bronzing method. Background technique [0002] The packaging materials of many products are made of plastic materials, such as plastic packaging hoses for cosmetics. With the upgrading of consumption, the quality requirements of consumers for product packaging are constantly improving. When manufacturing these packaging materials, manufacturers try their best to print them more beautifully and coolly. Therefore, a large number of hot stamping materials are printed Printed on plastic packaging materials to enhance the high-end quality of packaging materials and products. In the prior art, there is also the technology of three-dimensional printing, which makes the printed characters and patterns protrude on the surface of the packaging ...

AI Technical Summary

Problems solved by technology

In the prior art, there is also the technology of three-dimensional printing, which makes the printed characters and patterns protrude on the surface of the packaging material, and has a concave-convex feeling to the touch, presenting a three-dimensional visual effect, which is favored by the market. However, in the prior art, this type of The technology of three-dimensional printing can hardly be realized by hot stamping technology. Specifically, the hot stamping effect of existing plastic packaging materials (such as plastic hoses) is a pure plane, which is only the thickness of the hot stamping material (even negligible), and it is impossible to obtain three-dimensional printing. Bronzing effect, which is also a technical problem in the packaging material printing industry

However, there are also technologies that have tried to use the process of precise overlapping hot stamping to obtain the three-dimensional hot stamping effect, that is, precise hot stamping on the raised ink of the silk screen printing. The size is different and it is difficult to precisely control the accuracy of the position, the rate of defective products is extremely high, and there are particularly precise requirements for the equipment

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