How to achieve color printing of circular copperplate label paper?

The implementation of color printing on circular copperplate label paper usually involves the following steps and key points:

1、 Preparation stage

Design label:

Use professional design software such as Adobe Illustrator, Photoshop, etc. to design patterns and text for circular copperplate labels.

Ensure that the design files meet printing requirements, including resolution, color mode (usually CMYK), etc.

Select materials:

Choose copperplate paper suitable for color printing as the label paper material.

Choose the appropriate thickness and specifications according to the requirements.

Create a printed version:

Convert the designed label file into a printed version, usually using film or CTP (Computer to Plate) technology.

2、 Printing stage

Debugging the printing machine:

Adjust the parameters of the printing machine, such as pressure, ink viscosity, and flowability, based on the characteristics of copperplate paper.

Ensure that the pad technology and pressure adjustment of the printing machine are appropriate to ensure even and bright ink layers.

Ink blending:

Use ink suitable for copperplate paper printing and mix according to the colors in the design document.

Due to the smooth surface and poor ink absorption ability of copperplate paper, when printing large solid editions, it is advisable to achieve "deep ink thin printing" as much as possible, that is, to adjust the ink depth appropriately and make the ink layer correspondingly thinner during printing.

Printing process:

Place the copperplate paper in the feed section of the printing machine and start the printing machine for printing.

During the printing process, pay attention to monitoring the printing quality and adjust the printing parameters in a timely manner to deal with possible problems such as sticking and peeling.

Anti sticking treatment:

Due to the weak ink absorption and smooth back of copperplate paper, it is prone to sticking and getting dirty when printing on surfaces with high ink exposure or multi-color overprinting.

An appropriate amount of anti sticking agent can be added to the ink (note that the dosage should not exceed 4%), and stirred evenly to overcome the problem of sticking.

3、 Post processing

Drying and curing:

After printing is completed, let the label paper dry naturally in the drying room or use a drying device to accelerate the drying process.

Ensure that the ink is completely cured to improve the durability and waterproofness of the label.

Cutting and Forming:

Use a cutting machine or punching machine to cut the printed label paper into circular or other desired shapes.

Ensure cutting accuracy and edge smoothness.

quality testing:

Inspect the quality of the cut circular copperplate label paper, including color, clarity, and adhesion.

Ensure that all labels comply with design requirements and quality standards.

Packaging and Shipping:

Pack the qualified label paper and ship it according to customer requirements.

By following the above steps and key points, color printing of circular copperplate label paper can be achieved. It should be noted that the quality and technical parameters of each link must be strictly controlled throughout the entire process to ensure the quality and effectiveness of the final product.