Manufacturing method of UV laser positioning film

Abstract

The invention discloses a manufacturing method of a UV laser positioning film. The manufacturing method comprises the following steps that a PET film is selected as a base material, and chemical treatment is conducted on the upper surface of the PET film to form a chemical treatment layer; the upper surface of the PET film is coated with a layer of UV gloss oil, the UV gloss oil is subjected to impressing through a nickel plate roller and solidified under irradiation of a UV lamp to form a die pressing layer, the thickness of the die pressing layer is 6-8 [mu]m, a plurality of laser patterns are carved on the nickel plate roller through a laser, and the pattern effect of the surface of the solidified UV gloss oil is consistent with that of the nickel plate roller; and aluminum is plated onthe die pressing layer, and the UV laser positioning film is obtained. According to the manufacturing method, a chemical treatment layer serves as a carrier to enable the PET film and the die pressing layer to be tightly combined, the thickness of the die pressing layer is multiple times that of a traditional coating, the requirement of the impressing thickness can be met, the effects that impresses pattern lines are clear and bright and the pattern positioning accuracy and the reducibility are high are achieved, high-temperature hot printing is avoided in the whole die pressing process, andfalling off is not prone to occurring.

Description

technical field [0001] The invention relates to the technical field of laser film, in particular to a method for manufacturing a UV laser positioning film. Background technique [0002] Laser positioning film is widely welcomed by consumers because of its three-dimensional effect. Laser packaging materials not only have a novel and bright appearance, but also have high-tech anti-counterfeiting functions. Generally, they are made by traditional laser molding and heat embossed patterns. The thickness of the PET film in the traditional laser positioning film is between 12 μm and 15 μm, and the thickness of the coating is only about 1 μm, and the coating is molded after the coating is dried. Because it belongs to thermal embossing, the thickness of the PET film plus coating is generally not If it exceeds 16 μm, the PET base film is extremely susceptible to high temperatures of 170-195°C during the production process, resulting in lateral and longitudinal tensile deformation, res...

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Problems solved by technology

[0002] Laser positioning film is widely welcomed by consumers because of its three-dimensional effect. Laser packaging materials not only have a novel and bright appearance, but also have high-tech anti-counterfeiting functions. Generally, they are made by traditional laser molding and heat embossed patterns. The thickness of the PET film in the traditional laser positioning film is between 12 μm and 15 μm, and the thickness of the coating is only about 1 μm, and the coating is molded after the coating is dried. Because it belongs to thermal embossing, the thickness of the PET film plus coating is generally not If it exceeds 16 μm, the PET base film is extremely susceptible to high temperatures of 170-195°C during the production process, resulting in lateral and longitudinal tensile deformation, resulting in deviations in the positioning of the embossed pattern. For darker products (for example: various types of cat's eyes, platinum relief, etc.), the image during molding will be unclear due to insufficient coating thickness, and the image will be blurred. If the coating thickness is simply increased It is also not feasible, because it is thermal embossing, the thicker the coating thickness, the greater the risk of the coating falling off due to heat during the molding and embossing process

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