At present, the majority of the wallpapers sold in China are produced by gravure printing. The gravure printing wallpaper has the characteristics of uniform coloration and distinct layering. The gravure printing wallpaper adopts the gravure engraving steel roller printing production process, the ink is hidden in the groove of the metal roller, nature 3048299 340and the wallpaper substrate can be pressed and deformed by the rubber roller to end up being combined with ink, and after separation, the ink is recinded on the wallpaper substrate to create a pattern. Gravure printing wallpaper is definitely uniform in ink and solid in layering.
Gravure wallpaper process
1. Covering: uniformly apply the PVC slurry to the hardwood pulp paper, and the thickness of the PVC coating is required to be very uniform.
2, drying: using an oven greater than 20 meters, blowing heat on both sides of the paper to help make the slurry dry;
3. Printing: printing on timber pulp paper PVC coating with gravure printing machine;
4. Foaming: The coating on the top of wallpaper can be heated by an extended oven to soften it and facilitate embossing;
5, embossing: utilizing a rubber roller and embossing roller to press the pattern on the coating;
6. Cooling: utilize the cooling roller to cool the pressed flower shape to prevent rebound;
7. Trimming: Cut off the extra white edges on both sides of the wallpaper to the typical width, requiring both sides to be neat, uniform in width, without serpentine edges, raw edges and whiteout;
8, storage space: refers to the use of an extended platform for PVC Wall covering temporary storage of wallpaper, easy to check the top of wallpaper;
9. Winding: Utilize the coreless winder to collect the wallpaper as a completed item of 10 meters/roll, and then label it.
Gravure wallpaper features
In order to make sure that the ink is smoothly transferred from the groove to the wallpaper substrate, the oil ink may be the most suitable choice, and the groove of the plate roller shouldn’t be too deep, so the ink amount of the gravure printing is relatively small. Due to the utilization of oily inks, the polymer organic solvent is volatile, the ink supply is small, the result is usually high, and the procedure velocity can reach 120 m/min or more, which may be supplied to the marketplace in large amounts, and currently has the largest number available. The flower pattern is certainly delicate and colorful, and it is ideal for the relatively flat wallpaper printing (such as pure paper wallpaper, PVC coated wallpaper). This type of wallpaper can boost the three-dimensional effect after being processed by embossing.
Flexo printing wallpaper introduction
Flexographic printing is also used in letterpress printing. Wallpapers using flexographic printing have a sizable market share in Europe. This is different from the use of water-centered inks in flexographic printing wallpapers, less ink consumption, good environmental protection and solid layering. relationship.
About flexo printing
Flexographic printing runs on the flexographic plate to transfer ink through a textured transfer roller. For flexographic printing, the printing plate is normally manufactured from a photosensitive resin plate having a thickness of 1-5 mm. Ink is split into three classes, namely water-centered inks, alcohol-soluble inks, and UV inks. Because the ink used in flexographic printing is definitely environmentally friendly, it has been trusted in food product packaging printing and includes a bright potential. Flexographic printing is usually a type of embossing.
Flexographic wallpaper process
The printing process of the letterpress resin rubber roller is adopted, and the ink is transferred to the protruding rubber roller pattern through the ink transfer roller, and the ink is used in the wallpaper substrate to form a pattern by contacting with the wallpaper substrate.
Flexographic wallpaper features
Flexographic printing wallpapers are simple to use water-structured inks, and the amount of ink supplied by printing is certainly relatively small. It really is ideal for wallpaper printing with relatively toned substrates. Such wallpapers can also be processed by embossing to improve the three-dimensional effect. Flexographic printing wallpaper provides great environmental performance and may be the mainstream of wallpaper in Europe.
Insufficient flexo wallpaper
Because of the slow evaporation of water-based ink solvents, the creation capacity is not as effective as gravure wallpaper, and the speed of the process is generally around 100 m/min. Moreover, the flexographic resin roller materials is only available from a few foreign manufacturers, and the domestic plate making process is costly and the production price is definitely high, and it has not been widely used at present.
Round display screen printing wallpaper introduction
The rotary screen wallpaper paper adopts a nickel mesh roller printing production process, and the ink is conveyed to the within of the nickel mesh roller through the feeding tube, and the ink is extruded through the mesh on the nickel mesh roller to transfer to the wallpaper substrate to form a pattern.
Round display screen printing wallpaper advantages
The large amount of ink is a prominent advantage of rotary screen printing wallpaper, which can be utilized with water-based inks or other aqueous pastes, and thus has many features not really found in other printing production processes.
First, the wallpaper is strong. Since the amount of ink is large and the design is complete, when a certain quantity of foaming agent can be incorporated in to the ink, a three-dimensional pattern could be directly formed by foaming in a high-temperature drying room, and the three-dimensional effect is generally not improved by the embossing procedure.
Second, exceptional environmental advantages. The first is the environmental protection features of water-based ink; the second is that after 220 ° C high-heat range foaming treatment, not only can the solvent in the ink become volatilized, but also the harmful residual chemicals in the substrate can be removed to attain the desired environmental security purpose.
Third, the wallpaper is usually of a high grade. Recently, foreign individual wallpaper manufacturers have prepared the circular screen printing foam wallpaper through the embossing procedure, the result is very good, is the boutique in the wallpaper.
Fourth, the process mixture is flexible. Water-based adhesive paste can be imprinted on the wallpaper instead of ink, and sprinkled with particles of different materials to create a wallpaper of different combinations of printing, foaming, graining, etc., more good novel and fashionable features of modern wallpaper. To cater to people’s constant pursuit of individuality.
Fifth, the substrate is highly adaptable. The emergence of fresh components has promoted the progress of wallpaper, while non-woven paper and dietary fiber paper possess poor surface flatness than real paper. Round display screen printing can best adjust to the printing of uneven surface area materials in several production processes.
Insufficient rotary screen wallpaper
Due to the use of water-based ink, large amount of ink, slowest solvent evaporation, and complicated foaming process, the production capacity is the lowest, and the procedure speed is generally about 50 m/min.