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The printing process depends on the printing equipment. Different types of materials, labels for different purposes, and different process flows are used. The general label printing machine is a multi-functional equipment, and the processing factory can formulate the printing processing technology according to the requirements of the customer.
The printing equipment processing process is as follows:
(1) Unwinding
There is no tension change when the roll is unwound, so no adjustment is required. It is applied on the flat flat and round flat labeling machine, and the unwinding speed is slow. Since such equipment does not have a paper positioning correction device, the end face of the web is required to be clean and tidy, ensuring accurate overprinting during printing.
(2) Hot stamping
Flat flattening is applied to round flattening and flat flat labeling machines with low speed.
(3) Printing
It is suitable for label printing with solid, general pattern, and can be used for simple color screen printing. The round pressing circle is suitable for all kinds of pattern label printing, especially suitable for high-grade color mesh label printing.
(4) First hot stamping, then printing
On ordinary equipment without UV drying, the disadvantage is that the design of the printed pattern is limited.
(5) Printing first, then bronzing
It is applied to equipment with UV drying device. After the ink is quickly dried, the ink is bronted on the ink. The bronzing pattern is designed freely and is not restricted by the ink. It is suitable for high-grade label printing and is an advanced production process.
(6) glazing
A layer of varnish is applied to the surface of the ink to protect the ink layer from moisture, water and surface gloss. It can replace the laminating process and adopt UV drying.
(7) Laminating
The film is coated on paper or film material to protect the ink, waterproof, moisture-proof, increase the strength of the label, and increase the three-dimensionality of the pattern. The laminating film is divided into a bottomed paper laminating film and a bottomless paper laminating film. Due to the low cost of the latter, it is currently widely used.
(8) Punch
Applications are not common and are primarily used for computer-printed labels. The requirement is to locate the drive hole on both sides of the label, or the label applied on the price tag. It is required to punch holes in the middle of the label for positioning and driving.
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