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

At present, the majority of the wallpapers sold in China are made by gravure printing. The gravure printing wallpaper gets the characteristics of uniform coloration and unique layering. The gravure printing wallpaper adopts the gravure engraving metal roller printing production procedure, the ink is hidden in the groove of the metal roller, and the wallpaper substrate can be Modern Style Wall paper 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 can be uniform in ink and strong in layering.
Gravure wallpaper process
1. Coating: uniformly apply the PVC slurry to the timber pulp paper, and the thickness of the PVC covering is required to be very uniform.
2, drying: using an oven greater than 20 meters, blowing heat on both sides of the paper to make the slurry dry;
3. Printing: printing on wood pulp paper PVC covering with gravure printing machine;
4. Foaming: The coating on the surface of the wallpaper is definitely 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 awesome the pressed flower form 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 end up being neat, uniform wide, without serpentine edges, natural edges and whiteout;
8, storage: refers to the use of a longer platform for temporary storage of wallpaper, easy to check the surface of the wallpaper;
9. Winding: Use the coreless winder to collect the wallpaper as a completed product of 10 meters/roll, and then label it.
Gravure wallpaper features
In order to ensure that the ink is smoothly transferred from the groove to the wallpaper substrate, the oil ink is 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 use of oily inks, the polymer organic solvent is volatile, the ink source is small, the result is definitely high, and the process quickness can reach 120 m/min or more, which may be supplied to the market in large amounts, and currently gets the largest number on the market. The flower pattern is definitely delicate and colorful, in fact it is ideal for the relatively flat wallpaper printing (such as for example pure paper wallpaper, PVC covered wallpaper). This type of wallpaper can raise the three-dimensional impact after being processed by embossing.
Flexo printing wallpaper introduction
Flexographic printing is also found in letterpress printing. Wallpapers using flexographic printing have a large market share in European countries. This is very different from the utilization of water-based inks in flexographic printing wallpapers, less ink consumption, great environmental protection and solid layering. relationship.
About flexo printing
Flexographic printing uses a flexographic plate to transfer ink through a textured transfer roller. For flexographic printing, the printing plate is generally manufactured from a photosensitive resin plate having a thickness of 1-5 mm. Ink is divided into three classes, namely water-based inks, alcohol-soluble inks, and UV inks. Because the ink used in flexographic printing is usually environmentally friendly, it has been widely used in food product packaging printing and has a bright future. Flexographic printing can be a type of embossing.
Flexographic wallpaper process
The printing procedure for the letterpress resin rubber roller is adopted, and the ink is used in 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 easy to use water-centered inks, and the quantity of ink given by printing is usually relatively small. It really is suitable for wallpaper printing with fairly smooth substrates. Such wallpapers can also be prepared by embossing to improve the three-dimensional impact. Flexographic printing wallpaper offers good environmental performance and is the mainstream of wallpaper in Europe.
Insufficient flexo wallpaper
Due to the slow evaporation of water-based ink solvents, the production capacity is not as effective as gravure wallpaper, and the speed of the process is normally 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 cost is certainly high, and it is not widely used at present.
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 about the nickel mesh roller to transfer to the wallpaper substrate to form a pattern.
Round display 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 really found in other printing production processes.
First, the wallpaper is strong. Because the amount of ink is large and the design is full, when a certain amount of foaming agent is incorporated in to the ink, a three-dimensional pattern can be directly formed by foaming in a high-temperature drying space, and the three-dimensional impact is generally not elevated by the embossing process.
Second, excellent environmental advantages. The foremost is the environmental protection features of water-based ink; the second is that after 220 ° C high-temp foaming treatment, not merely can the solvent in the ink end up being volatilized, but also the harmful residual substances in the substrate can be removed to attain the desired environmental protection purpose.
Third, the wallpaper is definitely of a higher grade. In recent years, foreign individual wallpaper manufacturers have prepared the circular display printing foam wallpaper through the embossing procedure, the result is very good, may be the boutique in the wallpaper.
Fourth, the process mixture is flexible. Water-centered adhesive paste can be imprinted on the wallpaper rather than ink, and then sprinkled with particles of different components to create a wallpaper of different combinations of printing, foaming, graining, etc., more good novel and fashionable features of contemporary wallpaper. To cater to people’s constant pursuit of individuality.
Fifth, the substrate is highly adaptable. The emergence of brand-new materials has promoted the improvement of wallpaper, while non-woven paper and dietary fiber paper possess poor surface area flatness than pure paper. Round display printing can best adjust to the printing of uneven surface 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 may be the lowest, and the process speed is generally on the subject of 50 m/min.