Rotary flexo press of packaging plastic flexible pipe surface decoration

Abstract

The invention relates to a rotary plate flexo press for printing the decoration on the surface of a packaging plastic hose. In the method, the flexo printing technology is adopted to perform the printing on the surface of the hose. The rotary plate flexo press of the invention comprises a flexo press printing unit, a rotary table and 1 to 96 printing mandrels fixed at the external side of the rotary table; when the number of the flexo press printing units exceeds one, the flexo press printing units are arranged on the same circle coaxial with the rotary table; when the printing mandrels rotate along with the rotary table, the printing mandrels can rotate to the lower side of the transfer printing roller of the flexo press printing unit and can cause the hose on the printing mandrels to contact with a flexo forme on the transfer printing roller for printing. The method can enable the printed patterns through the hose to be richer and more colorful, decreases decorating procedures and reduces production cost. Therefore, the rotary plate flexo press of the invention has short machine debugging time, requires no thickened ink and has the production speed of up to 150 hoses per minute.

Description

technical field [0001] The invention belongs to the technical field of printing, and in particular relates to a printing method for decorating the surface of a packaging plastic hose and a rotary flexo printing machine. Background technique [0002] Packaging plastic hoses are widely used in the packaging of cosmetics, pharmaceuticals and other products. At present, there are only two printing methods for the surface pattern printing of packaging plastic hoses: offset printing and silk screen printing, both of which use spot color inks for printing, and can only print 6 to 8 colors at most, and the printing patterns are usually relatively simple and rough. The offset printing method of multi-color overprinting takes more than 4 hours to adjust the color plate, and the printing color is prone to deviation. In the silk screen printing method of multi-color overprinting, the ink layer is too thick and cracks, and the adhesion cannot be guaranteed. Therefore, in order to achie...

AI Technical Summary

Problems solved by technology

[0003] The traditional flexo printing machine is applied to flat printing, and cannot directly print on the circumferential surface of the cylindrical hose. Therefore, there is no flexo printing technology currently used for printing on the surface of the packaging plastic hose.

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