The hottest roller screen printing process

2022-09-28
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Roller wire printing technology

first, roller printing technology

roller wire printing technology is more and more widely used in label and packaging printing markets that need high quality and good visual effects. Using roller wire printing technology, we can achieve effects and other additional functions that cannot be achieved in other ways. Next, take the stoke cylinder wire printing machine as an example to introduce the cylinder wire printing technology and equipment

1. The roller printing system is composed of multiple independent monochrome printing units, which is suitable for printing of various widths and can make the synchronous production line get integrated intelligent control. The process is shown in Figure 1. Press the ink ② with a rubber scraper ① to make it penetrate into the substrate ④ through the hole ③ on the drum nickel, and the substrate is fixed by an embossing drum ⑤. Silk, substrate and impression cylinder move at the same speed, which forms a "friction free" system

in the stoke cylinder printing system, the patented rotamesh wire technology is adopted, which is a non-woven material made of 100% nickel by electroforming. The unique hexagonal structure can achieve excellent stability, as shown in Figure 2, which can make the silk stretch freely in the paper roll printing with different widths

It also greatly improves the serious creep defect of plastic products.

rotamesh wire has the following characteristics:

① 100% nickel metal material

② non fabric

③ electroforming manufacturing

④ hexagonal structure ensures maximum stability

⑤ the silk seam is extremely flat and perfect

⑥ the smooth surface of the drum can reduce the wear of the printing plate

⑦ conical hole has ideal inking performance

in addition, rotamesh wire also has high standardization and stability; Long service life, reusable, suitable for high-speed printing and high calibration accuracy

2. Stoke plate making system (RSI)

stoke roller wire system can provide a simple plate making system. Especially when short edition production or temporary printing is needed, this system has completely independent and complete plate making quality and great flexibility. Because this system is installed indoors, its overall cost can even be reduced to be equivalent to the existing printing form

the plate making process of rotamesh wire is as follows:

1. End ring connection. The left and right end rings of the welded cylindrical wire are bonded to the cylinder with adhesive

2. Degrease. The silk is degreased before being coated with photosensitive adhesive

3. Coating. Apply a layer of stork water-based photosensitive emulsion on the surface of the drum wire, and the coating should be uniform, flat and smooth

4. dry. Dry the degreased silk drum coated with photosensitive glue in the dryer

5. Exposure. After the silk coated with photosensitive emulsion is closely combined with the graphic film, it is exposed on the exposure device

6. development. Wash away the unexposed emulsion in the graphic part with water

7. testing. Check the quality of the plate before printing

8.

peel the film. Due to the unique photosensitive emulsion used in rotamesh process, the adhesive film on the plate can be easily removed with a special film remover and can be re coated. This brings a lot of convenience to short version printing

II. Cylinder silk printing system

cylinder silk printing is a printing technology with high economic and technical content. The key technology in cylinder silk printing is plate cylinder and printing system

cylinder wire printing system

1) the combination of stoke cylinder wire printing system dryer and 24 inch wide printing unit makes the production speed reach 120 meters/minute if the oil pipe is broken. The roller printing machine is stable and durable in structure, and the silk can be used repeatedly. It is suitable for printing products with large quantities or often repeated printing

2) roller wire printing system generally has a simple and convenient moving parts conversion control system, and the downtime of replacement work is very short. The equipment can achieve high output

stoke cylinder silk printing system includes:

① independent drive and independent register silk unit (installed on various cylinder printing equipment)

② roll to roll equipment, and each unit is an independent system

③ roll to various post-processing equipment (such as sheet cutting, drum die cutting, etc.)

third, a wide range of applications

roller printing has been widely used in many fields because of its thick ink layer, bright and heavy color, good coverage, fine lines, seamless pattern connection, the use of large particles of printing ink to increase the stereoscopic sense of graphics and texts, high-definition printing images and other characteristics:

1) roll invoice printing field

at present, many regions print on roll invoices, and carry out prize matching activities, Because roller printing products have the advantages of strong coverage, good coverage effect,

printing, good confidentiality, simple operation, easy maintenance and so on, stork equipment has been widely used in the printing of scratch invoice projects

2) carton packaging field

at present, the common special printing effects such as ice flower and frosting in carton packaging make the characteristics of roller silk printing give full play

3) in the field of label printing

due to the advanced structure of the stock version, the regulation of the oxygen index of the wall insulation foam material and the high precision of the printing equipment, the label printing has achieved a variety of effects that are difficult to achieve in the flat wire printing, such as multi group plate chromatic registration and color gradient

IV. installation scheme of the silk unit

the roller silk printing unit has the flexibility to connect the whole t to the oil return port body with the host. When connecting, the specific structural form of the printing unit and the user's host can be determined according to the specific situation of the end user. Theoretically, the printing unit of stock can be installed on any kind of rotating equipment

reprinted from: Shenzhen printing

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