Drying cabinet of ultraviolet printer

Abstract

The invention discloses a drying box of an ultraviolet printing press, which comprises a lamp box and an ultraviolet lamp arranged inside the lamp box; wherein, the lamp box is internally provided with a compensation air valve, an inlet and an outlet; the inlet is provided with an air knife; the outlet is provided with an air-stop device; the air knife carries out sweeping and oxygen cleaning treatment to the surfaces of the printing stocks coated or printed with printing ink in the outlet; then the printing stocks are dried in an ultraviolet drying box filled with protective gas; in the entire drying process, the printing ink can not contact and have chemical reaction with the oxygen in the air. The drying box has the advantages of avoiding the addition of antioxidant in the printing ink,reducing the cost of the printing ink, being beneficial to the performance stability of the printing ink, reducing the production cost of printed materials, improving the printing quality and causingno pollution to the environment, and is characterized by simple structure, low power consumption and strong market competition.

Description

technical field [0001] The invention relates to a printing device, in particular to a drying box of an ultraviolet printing machine. Background technique [0002] Ultraviolet (UV) ink printing has the advantages of no solvent, fast drying, less energy consumption, good gloss, bright colors, water resistance, and good wear resistance. Ultraviolet (UV) ink printing machines have become a very It is an important printing equipment, which is to apply ultraviolet light curing (UV) ink on the printing material, and make the ink film-forming and drying under ultraviolet light. The drying oven of the current ultraviolet curing (UV) ink printer is open, and the printing material directly enters the drying oven after coating or printing ink, and the light curing agent in the ink will chemically react with oxygen in the air at high temperature , affect the quality of printing, and will produce a strong smell, causing environmental pollution, which is not conducive to environmental pro...

AI Technical Summary

Problems solved by technology

The drying oven of the current ultraviolet curing (UV) ink printer is open, and the printing material directly enters the drying oven after coating or printing ink, and the light curing agent in the ink will chemically react with oxygen in the air at high temperature , affect the quality of printing, and will produce a strong smell, causing environmental pollution, not conducive to environmental protection

[0003] In order to prevent the curing agent in the ultraviolet curing (UV) ink from reacting with oxygen in the air during the drying process and affect the printing quality, NH is added to the current ultraviolet curing (UV) ink 2 or OH and other antioxidants, the oxygen in the air reacts chemically with the antioxidants during drying to prevent oxidation by consuming oxygen, and in the printing process, due to the different thickness and density of the ink, the ink manufacturer is in the In the production process, it is difficult to grasp the proportion of antioxidants, often incomplete oxygen consumption or excess antioxidants

However, if the amount of photocuring in the ink is increased, its cost will also increase, and the power of ultraviolet drying must also increase accordingly, and the energy consumption will increase, resulting in a lot of increase in the production cost of printed matter.

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