subject: Paper packaging products, screen printing method outlined [print this page] Paper packaging products, screen printing method outlined
Paper Package Mainly refers to packaging for goods Carton , Box , Paper, etc., and for transport packaging Corrugated Cartons and other products. Wire Screen Printing Thick brush with ink, graphic rich layers, dimension, printing materials and so wide, in the high-grade tobacco and alcohol, Food Wrapper Case the application of gradually increasing. Use UV screen Ink Matte printed in the cigarette case, refraction, Ice, wrinkles and other effects, greatly stimulated the Consumption Those who desire to buy.
Screen printing Features and technology arrangements
1. Silk screen printing process arrangements
A direct printing screen printing, processing arrangements, there are three: Screen Printing Cardboard finishing, that is, first of all in the corrugated board or other cardboard on screen printing, and then as needed Make Into a cardboard box products; carton Screen Printing, which has been produced directly or other good corrugated cartons, boxes on screen printing; secondary processing, which carried out the first board in the tissues screen printing, and then made into corrugated board as needed, then Zuocheng cardboard box products. 2. adaptability features screen printing: screen printing format can be very flexible; solid ink: in all printing processes, screen printing ink layer thickest, saturation, color printing better effect; Low cost: Screen Printing Plate Easy, simple printing process; print quality and stability; low productivity: Screen printing is slow, not suitable for on-line production; low precision images: screen printing resolution is not high, the conventional line screens of 24 lines / cm of 32 lines / cm.
3. Screen Printing Application Screen printing for small batch production, printed in the higher, the thickness of cardboard open, without prejudice to the strength of packaging products.
Screen printing process 1. Silk Screen Production (1) Mesh selection Nylon Mesh: Nylon mesh, high strength, high wear resistance, high alkali resistance, acid resistance somewhat less ink through the good, thread diameter is small, flexibility, and imprinting clear; Polyester Mesh: Polyester mesh stability, high strength, corrosion resistance, better performance than nylon mesh, stretching tension high, suitable for high-precision printing; Stainless steel wire Network: stainless steel wire, high strength, good stability, small diameter wire, mesh, anti resistance, long life, flexibility is poor, easily broken by the impact, suitable for precision printing, not suitable for surface printing; Nickel Polyester Mesh: Nickel-plated polyester mesh polyester mesh and combines the strengths of stainless steel wire, wide applicability, affordable, poor corrosion resistance.
Screen with plain weave, twill weave, semi-spinning, all spinning. White screen easily cause diffuse exposure, gold, red, amber UV absorption, can prevent flare. The number of wire mesh, 30 mesh / cm, 40 mesh / cm, 60 mesh / cm, 80 mesh / cm, 120 mesh / cm, 140 mesh / cm and 160 mesh / cm and so few, general, mesh number of large, net wire diameter is small. Dense network of filaments, high resolution; thick wire mesh coarse low resolution. Printing surface, the elasticity of the mesh used, such as nylon mesh; printing large absorbent substrates, the use of large mesh size screen; printing smooth surface, with high elasticity, high tension wire; printing rough surface when the purpose of screen with low net; printing when printing high precision, with low elongation, high tension wire; printing signs Textile Goods, knitwear, the use of 28 mesh / cm ~ 78 mesh / cm screen; printing paper, metal, Glass Leather, plastic, use of 40 project / cm ~ 140 mesh / cm wire.
(2) Stretching Screen version of the net box with wooden frame, metal frame, plastic boxes, combo boxes and so on. Stretching, the first on the screen frame for cleaning, stretching can use manual, mechanical or pneumatic means, after the bond stretching and trimming. Stretching wire tension required appropriate, uniform and stable, to the same wire, to avoid inclined, parallel to the warp and weft yarn respectively.
(3) plate
direct method: Screen Cleaning Tu Sensitive adhesive Imaging plate burning Revised Edition. This method of coating time, coating thickness adjustable, combined with strong resistance, printing, graphic sawtooth-prone. indirect method: Film with printing down develop foil pieces exposed blade Revised Edition. This method is complex and smooth lines, the film is not strong, anti-Indian power is low, the film thickness change. mixed: Screen Cleaning foil pieces develop Revised Edition proofing. This method is simple, the thickness of the fixed lines and a smoother, more solid.
