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Combination of screen printing in the packaging printing features
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| Published：2009.10.07 News Sources：HC Network Views： |
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Along with economic development, material life is becoming richer, people are getting higher and higher spiritual and cultural needs. Packaging products due to have artistic, decorative and landscaping features of life, but also increasingly by the manufacturers and sellers attention. In particular, the printing enterprises can not succeed in the fierce market competition in an invincible position, and establish the concept of quality of competition is necessary. To alcohol and tobacco packaging, for example, today's product packaging is more gorgeous than ever fine, craft become more sophisticated, with a printing will be able to meet the requirements of the days are gone forever. At present, more widely used is the combination of print production processes.
Combination Printing
Combination of print refers to many types of printing and finishing production line made up of units. The current combination of common printing methods include: (1) to take letterpress (Letterpress offset): mainly used in toothpaste, two cans and other packaging and printing; (2) to take gravure printing (gravure offset printing - printing): major applications curved surface printing on containers; (3) embossing embossing (embossing printed): is mainly used in packing a sense of relief after the three-dimensional processing; (4) soft ~ net portfolio printing production line (5) plastic ~ net portfolio printing production lines.
Screen Printing combination printing applications
Screen printing due to the uniqueness, you can make up for lack of other printed and improve print quality, increase decoration and artistic effect, so that print unique, and thus more attractive to customers. Thus, in combination printing, screen printing has a broad application prospects.
At present, the network mainly related to flexo printing or offset printing portfolio mix. For example, a high precision rotary printing screen printing unit with a combination of flexo printing, screen printing can be stacked out of the use of relatively thick ink layer, with excellent hiding power, can be printed coarse features, re-use of flexography their printing speed, high-definition advantage of it in the packaging printing market to gradually occupy an important position. Another example is cylinder Screen Printing Machine, the general rate of 4000 / hour or so, the use of advanced positioning methods may be offset combinations to achieve high-Fine Halftone Screen Printing Offset Printing, and special decoration results.
Screen Printing in combination printing, mainly undertake the following functions: (1) enhance product appeal. Effect of air permeability required to adopt the design, use of very heavy or light color ink, etc.; (2) printed in a more hostile environment can be used in labels. Such as battery labels, paint, labels, etc.; (3) printing needs to be emphasized product brands and logo products. Note label, such as pharmaceuticals, injections labels; (4) the publication of certain products ingredients basis having the law label warning the user. Such as the blind, etc.; (5) the publication of results need to obtain gold and silver and other metal packaging; (6) produce a simple and elegant decor effects of packaging. Such as using screen printing to print large areas of the field and anti-white text, rather than printing fine text; (7) The need to appear on cigarette packets or cosmetic packaging embossed, frosted and other effects: (8) printing scratch scratch card. As various types of lotteries and other securities; (9) the use of optical transition temperature screen printing ink, to improve valuable coupons, trademarks, anti-counterfeiting capabilities.
Paper Packaging Printing special ink
Screen Printing in paper packaging and printing process is mainly reflected the use of technology in special ink.
l, UV-curing inks
Ultraviolet (uv) ink key features include: (1) Instant dry. Printed materials by the UV lamp irradiation (300 ~ 400) an instant cure, the paper can be folded immediately and will not rub dirty. Heat oven curing ink is about 30M long power 220kw. The UV curing device for the 2M length, power 64kw, considerable savings in the plant and energy consumption, improve productivity; (2) non-toxic. uv printing ink does not contain solvents, during the curing process, in addition to easy to rule out a small amount of ozone, the will not distribute any pollutants; (3) high performance ink film. In a variety of solid substrates with good ink film integrity, anti-zoned nature of friction resistance, acid resistance, ethanol resistance were much higher than normal ink.
◎ UV imitation metal etching ink
uv printing, also known imitation of metal etching frosted or sand surface printing, which is a metallic luster mirror substrates (such as gold and silver cardboard) printed on the layer of rugged translucent ink, and then through the UV curing, we can generated similar to the etched or frosted effect, three-dimensional sense of strong, used in packaging products can be Jinxian gentrification, has now been enlarging its wine standard, cosmetics, health products such as color printing industry, widely used in packaging.
◎ UV Ink wrinkle pattern
Way to use screen printing UV wrinkled printing ink printed on the surface, after UV-drying printing surface can produce a special pattern effects of wrinkles. Such as sheep's clothing patterns, orange peel pattern and so on. The unique decorative effect of wrinkles can be displayed fine packing, alcohol and tobacco, clothing and other packaging and printing, and sign an ideal choice for screen printing. Can be applied to paper, composite paper, PVC and other materials.
Ice ◎ UV inks
In the printing with a metallic luster surface, using screen printing method will be ice-covered ink printed on it, after UV curing, may present a crystal clear, has caused a massive density patterns, like windows on the farm Duo Saibei Duo Ice. In light conditions, glittering, so that packaging is more novel and unique, the Furama expensive. At present, the Ice ink is mainly used in high-grade alcohol and tobacco packaging, can also be used to mirror or some plastic and metal packaging decoration.
◎ UV Spot Coating
The so-called just means that printed on the surface coated with a layer of colorless and transparent coating to form a bright film process. As the coating leveling the surface of the print to enhance the surface properties of the print, but also played a role in the protection of printed graphics is widely used in book covers and packaging and decoration. Just refer to the products locally, on the surface of local key positions to be glazing, glazing parts of brightness and at the end parts of the matte coating the formation of visual contrast, creating a unique decorative effect. Screen Printing Local uV polishing process steps: (1) scanning of printed material required for coating; (2) scan obtained with the computerized image, sketched out the need to polish the site; (3) a film, made-yang image; (4) Shaizhi network printing plate, using 200 ~ 300 mesh, inches of nylon net; (5) use UV Varnish, and printed materials that require coating with good adhesion; (6) General use The UV light intensity 80w/cm drying, drying time is 0.5 ~ 0.8s.
2, microcapsule ink
Microencapsulation technology was developed nearly 30 years of technology, is a substance (solid, liquid, gaseous) particles (drops) wrapped around a layer of polymer material on the film, to form tiny capsules (5 ~ 200m, wall 0.2m to a few microns thick). Microcapsules are many functions, mainly in printing the application is to reduce volatile, control release, isolated the active ingredient, etc., and has a good separation.
◎ foam ink
Foam printing foam printing ink is used microspheres, by screen printing method of printing on paper or fabric, available graphic uplift effect. In addition to decorative arts can enhance the effect, but also can give special function to read Braille, applications become very popular. Foreign widely used in the foam ink printing book covers and decorative materials. Graphics can be printed to show the natural embossed feeling. In plastic, leather, textiles, printed on the packaging, its appearance feel, breathable, breathable, abrasion, pressure, water, color, etc. all have unique characteristics. Foaming ink prepared from the micro-capsule technology. This is done in micro-capsules filled into low-boiling point solvent, after heating, low boiling point solvent heated gasification, micro-capsule size can increase to the original volume of 10 ~ 30 times of such capsules in the appropriate connection material foam ink.
◎ scented ink
Since the 19th century, people apart from the pursuit of visual beauty of printing effect, the smell print is working for. Was first in the ink or paper obtained by adding spices flavor, this method is simple, but not lasting. Since 1972, the popular seal every possible way to spice scent inside the capsule screen printing ink. Aroma is mainly used for printing magazines, advertising, flyers, brochures, menus, calendars, instructional charts, clothing and so on.
◎ Liquid Crystal Ink
LCD with both liquid flow and surface tension, but also has crystal optical properties of the material. Among them, gall Zi optical properties of liquid crystal can change with temperature, the liquid crystal capsules mixed with bile Zi inks, screen printing can be carried out. LCD printing is widely used in food packaging, gift packaging, trademarks, and printing, they can always show the suitability of storage temperature.
3, crystal gloss ink (ink flash)
Crystal gloss printing refers to the printed surface of the transparent paint or ink in the implied crystal flash material, in the case of solar incidence angle changes, which can produce colorful and shining crystal special decorative effect, this process is mainly used in production of ad.
Crystalline material and to use more flash spray coating colored polyester-like particles after the grinding (0.05 ~ 1.60nm) or with a special flash fibers shatter into particles. Crystal gloss printing mainly uses the following two processes: (1) Dry sprinkling bonding method. In the print need to decorate the site screen printing a transparent adhesive material, while it is yet to dry immediately sprinkle dry crystalline particles in its flash, the Indian moving the heat drying, flash particles will be consolidation in the last (2) screen printing ink France. Crystalline particles mixed with links to flash the compound, made of ink, printed by screen printing methods on the site required for direct printing decoration.
4, Refractive Screen Printing
Refractive index screen printing is the principle of using light refraction, in the label or packaging surface to be decorated light pattern, so that the angle changes in the line of sight occurs when light and dark changes in gradient or jump up and down, producing bright dynamic. With a refraction effect of packaging box, previously through the aluminum foil composite paper, dense grain purity of manner, and its equipment, invest in large, complex production process. Newly developed refractive Screen Printing equipment investment costs are low, production process is simple, absolutely fabulous refractive products, but also in any material printed on the refractive index of the refractive index can produce excellent results. Particularly in the material with a mirror effect on the refractive index print showing their products can be laser-like feeling, vibrant, Xu-Xu moving.
Refraction images composed entirely of lines, lines are straight lines and curves of two kinds. Straight line is equally spaced parallel lines, curves are equally spaced concentric circles. Each one sharing four of yin and yang lines, it will produce refraction effects, usually 6 to 7 of yin and yang lines.
Screen Printing Process Packaging refraction points are: (1) The use of monofilament polyester mesh. According to the line thickness refraction to determine the extent of the number of wire, usually 300 ~ 500 mesh / inch; (2) Refractive stencil glue needed about four times (depending on light-sensitive gel thin consistency may be), only the first pass be repeated Scratch Network version of pros and cons, and then 40c1 = oven drying, second three times in the screen printing once the Scratch, drying, and the fourth edition of ink all over the net surface Scratch time, drying; (3) selection of high-quality the refractive index ink, UV ink preferably, in the dust-free workshop, using high-precision flat screen printing machine to print the image to the refractive index has been printed with a printed color pictures, or at the end of the metal plates, metal luster, metal film or paper that is refractive index can produce results.
5, Screen Printing Stamping
Printing Stamping is a lower cost, easy method of bronzing, stamping method than the copper and zinc Toppan low cost, short cycle, but no matter how complicated graphics, as long as the output from the computer version of the film camera-ready Stamping Hot Stamping. Screen stamping method in metal, wood, bamboo, paper, glass, cloth, plastic, leather, stone and other materials on the production of gilt graphic. The process as follows: (1) Graphic film production. Create the necessary computer graphics, using a laser printer output: (2) system for network printing plate. With 100 ~ 200 mesh / inch of polyester mesh and water-soluble photosensitive offset edition; (3) Select bronzing gel. Bronzing gel with water, oil divided, water-based adhesive for bronzing paper, cloth materials Stamping: (4) India XI 0 bronzing gel. Screen Printing Photo must be clear: (5) Hot Stamping. India XI to be a gilt stamping after drying glue graphic. The materials placed in Stamping Aluminum required to choose the Tangmian machines or irons and other equipment, hot stamping, when attention to the temperature should be controlled at 60 ℃, stamping a few seconds, after cooling slowly to excess tear Aluminum Next, it can be dazzling gilt graphics. |
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