A lot of crafts behind a roll of wallpaper, 99.9% of people are not clear!

At present, most of the wallpapers sold in China are made by gravure printing. The gravure printing Fabric Wallcovering wallpaper has the features of uniform coloration and distinct layering. The gravure printing wallpaper adopts the gravure engraving steel roller printing production procedure, the ink is hidden in the groove of the steel roller, and the wallpaper substrate is usually pressed and deformed by the rubber roller to become combined with ink, and after separation, the ink is taken away on the wallpaper substrate to create a design. Gravure printing wallpaper is uniform in ink and solid in layering.
Gravure wallpaper process
1. Coating: uniformly apply the PVC slurry to the real wood pulp paper, and the thickness of the PVC covering must be very uniform.
2, drying: using an oven greater than 20 meters, blowing hot air on both sides of the paper to help make the slurry dry;
3. Printing: printing on solid wood pulp paper PVC covering with gravure printing machine;
4. Foaming: The coating on the top of wallpaper is normally heated by a long oven to soften it and facilitate embossing;
5, embossing: using a rubber roller and embossing roller to press the pattern on the coating;
6. Cooling: utilize the cooling roller to great the pressed flower form to prevent rebound;
7. Trimming: Cut off the excess white edges on both sides of the wallpaper to the typical width, requiring both sides to become neat, uniform in width, without serpentine edges, raw edges and whiteout;
8, storage space: refers to the use of an extended platform for short-term storage of wallpaper, simple to check the top of wallpaper;
9. Winding: Use the coreless winder to gather the wallpaper as a finished item of 10 meters/roll, and 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, therefore the ink amount of the gravure printing is relatively small. Due to the use of oily inks, the polymer organic solvent is certainly volatile, the ink source is small, the output is certainly high, and the process rate can reach 120 m/min or even more, which can be supplied to the marketplace in large quantities, and currently has the largest number available. The flower pattern is certainly delicate and colorful, in fact it is ideal for the relatively toned wallpaper printing (such as for example real paper wallpaper, PVC covered wallpaper). This kind of wallpaper can boost the three-dimensional effect after being processed by embossing.
Flexo printing wallpaper introduction
Flexographic printing can be found in letterpress printing. Wallpapers using flexographic printing have a big market share in Europe. This is different from the use of water-based inks in flexographic printing wallpapers, less ink consumption, great environmental protection and strong 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 generally made of a photosensitive resin plate having a thickness of 1-5 mm. Ink is split into three types, namely water-based inks, alcohol-soluble inks, and UV inks. Because the ink used in flexographic printing is certainly green, it has been trusted in food packaging printing and includes a bright potential. Flexographic printing is normally a kind of embossing.
Flexographic wallpaper process
The printing process of the letterpress resin rubber roller is adopted, and the ink is used in the protruding rubber roller pattern through the ink transfer roller, and then the ink is used in the wallpaper substrate to create a pattern by contacting with the wallpaper substrate.
Flexographic wallpaper features
Flexographic printing wallpapers are easy to use water-structured inks, and the quantity of ink supplied by printing is normally relatively small. It really is suitable for wallpaper printing with relatively toned substrates. Such wallpapers can also be prepared by embossing to improve the three-dimensional effect. Flexographic printing wallpaper offers good environmental performance and is the mainstream of wallpaper in European countries.
Insufficient flexo wallpaper
Due to the slow evaporation of water-based ink solvents, the creation capacity is not as effective as gravure wallpaper, and the velocity of the process is normally around 100 m/min. Moreover, the flexographic resin roller materials is only available from a few foreign producers, and the domestic plate making process is costly and the production cost is usually high, and it is not widely used at the moment.
Round 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 create a pattern.
Round display screen printing wallpaper advantages
The massive amount ink is a prominent advantage of rotary screen printing wallpaper, which can be used with water-based inks or other aqueous pastes, and thus has many features not within other printing production processes.
First, the wallpaper is strong. Because the quantity of ink is large and the pattern is full, when a certain amount of foaming agent is definitely incorporated in to the ink, a three-dimensional pattern could be directly shaped by foaming in a high-temperature drying area, and the three-dimensional impact is generally not increased by the embossing process.
Second, exceptional environmental advantages. The first is the environmental protection features of water-structured ink; the second reason is that after 220 ° C high-temp foaming treatment, not only can the solvent in the ink be volatilized, but also the dangerous residual substances in the substrate can be removed to attain the desired environmental safety purpose.
Third, the wallpaper is of a high grade. Recently, foreign individual wallpaper producers have processed the circular display printing foam wallpaper through the embossing procedure, the effect is very good, may be the boutique in the wallpaper.
Fourth, the process combination is flexible. Water-structured adhesive paste can be imprinted on the wallpaper instead of ink, and then sprinkled with particles of different components to form a wallpaper of different combinations of printing, foaming, graining, etc., more based on the novel and fashionable characteristics of contemporary wallpaper. To focus on people’s constant quest for individuality.
Fifth, the substrate is highly adaptable. The emergence of brand-new materials has promoted the progress of wallpaper, while non-woven paper and dietary fiber paper possess poor surface flatness than pure paper. Round display screen printing can best adjust to the printing of uneven surface materials in a number of production processes.
Insufficient rotary screen wallpaper
Due to the use of water-based ink, large amount of ink, slowest solvent evaporation, and complicated foaming procedure, the production capacity is the lowest, and the process speed is generally about 50 m/min.