Printing method Flat screen printing

August 15, 2021

Flat screen printing (referred to as 绢 screen printing) has two types of frame movement and deployment.
A frame-type screen printing The fabric to be printed in the frame-type screen printing is a hot (or cold) platen adhered to a temperature of about 45°C. The color pastes on the patterned screen mesh, tightened on the frame, are then squeegeeed onto the fabric with a rubber squeegee, so that one set can be picked up and one version can be printed on the fabric to form a complete flower. type. Because of its manual labor, the operating labor force is very high. At present, most of screen printing has been semi-automated, so that the manual moving frame has become electric automatic displacement and positioning, and manual squeegee printing has become mechanical electric squeegee, which reduces the labor intensity of workers.

1. Advantages of frame-type screen printing:

(1) The size of the unit pattern is limited, and special patterns can be printed.

(2) Color registration is not limited.

(3) The colorfulness and vividness of flowers are inferior to other printing methods.

(4) The fabric is glued on the platen, which is more conducive to printing fabrics that are easily deformed.

(5) Suitable for printing production of high-grade fabrics with small batches and varieties.

2. Disadvantages of frame-type screen printing:

(1) The equipment has a large area and the workshop must have sufficient length.

(2) It is difficult to solve the pattern printing of the straight pattern.

(3) Pattern fineness, especially line fineness is not as good as copper roller printing.

(4) Low labor productivity.

Two movable fabric screen printing cloth drive type printing in the screen printing is carried out on an automatic screen printing machine. The machine's platen is not heated, its length is also short, the platen sets a seamless rubber endless belt, the printed fabric is flatly adhered to the conduction band, and a flower returns with the conduction band. After the distance, the machine stops at random and the screen frame lifter automatically descends until the screen is close to the fabric. The scraper reciprocates the squeegee according to the number of electromagnetically controlled squeegees; after the color paste is squeegeeed onto the fabric, the screen frame is Lift up, and the tape guide advances by the specified distance. The printing step is automatically completed in such a version. After the printing is finished, the fabric enters the drying equipment for drying.

1. Advantages of deploying screen printing:
(1) There is less restriction on the size of the unit pattern. Hydromag4-V can print patterns with a maximum flower back of 4200mm, and the printing width can reach 3200mm.
(2) Although there is a limit to the color registration, it is still possible to print more than a dozen patterns.
(3) It is suitable for printing production of high-grade fabrics of small batches and varieties.
(4) The fabric is glued to the rubber belt and is suitable for printing fabrics that are easily deformed.
(5) The color richness and vividness are better than copper roller printing.
(6) Overcoming the shortcomings of large screen size and high labor intensity of frame-type screen printing equipment.

2. Disadvantages of cloth screen printing:
(1) It is more difficult to solve the pattern printing of the straight pattern.
(2) The fineness of the pattern, especially the fineness of the line, is not as good as the copper roller printing.
(3) The colorfulness and vividness of flowers are not as good as those of frame-type platen screen printing.
(4) The production of platens is far from that of copper roll printing.

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