Ceramic decals are the process of transferring the colored patterns on the decal paper to the ceramic body or glaze surface by pasting. It is also called "transferring flowers" and is the most widely used decorative technique in modern ceramics.
Next, we will introduce the classifications of decals and their characteristics.
1
About Film Decal Paper
Small film decal paper, also known as water transfer decal paper, is a decorative process that first prints the pattern on a special paper pre-coated with water-soluble glue, then transfers it to the surface of the object after soaking it in water. Small film decal paper is composed of the bottom layer of base paper (also called paper base), the middle layer of sol, and the surface cover oil.
Film decals can be divided into high-temperature decals and low-temperature decals according to the different baking temperatures after transfer.
►Low temperature decal paper
The main component of low temperature decal paper is ink material. The color material dries slowly during production, and it takes enough time to completely dry before the second process can be carried out; the firing temperature of low temperature decal paper is 120-180 degrees. Low temperature decal paper is affordable, colorful, versatile, good gloss, strong three-dimensional sense, anti-corrosion and environmentally friendly, but the adhesion is relatively weak.
►High-temperature decals
High-temperature decals are mainly divided into three categories: overglaze, mid-glaze, and underglaze. Overglaze decals are mainly used for wine bottles and daily-use porcelain, etc., with a firing temperature of about 780 degrees. Mid-glaze and underglaze are mainly used for daily-use porcelain, artistic porcelain, etc. Some high-end wine bottles also use mid-glaze decals, with a firing temperature of 1250 to 1380 degrees. High-temperature decals have good wear resistance and will not fall off or fade even if placed for a long time. They have strong adhesion, but their price is higher than that of low-temperature decals, and they are prone to bursting and other phenomena. It is difficult to control the temperature, and sometimes different temperatures are selected according to different colors. Especially for decals with gold, if the temperature is too high, it is easy to burn black and change color; if the temperature is too low, the color is not bright enough and dark.
Decal life
The service life of low-temperature decal paper is shorter than that of high-temperature decal paper.
The best time to use it up is within one month. If it is used for too long, it will easily oxidize, so we basically do not keep it in stock.
Decal dehydration problem
If the decals are difficult to dehydrate, it is usually a problem with the base paper. Do not pull too hard at this time, otherwise the decal pattern will be damaged. It is recommended to soak it in water for a little longer, but the water temperature should not be higher than 25 degrees, and should be between 20-25 degrees.
During the decal process, try to use soft rubber when scratching the paper, especially when applying low-temperature decals, which can easily scratch the pattern. When decaling, the water needs to be fully dried, and then wipe it again with a dry cloth.
Decal Adhesion Problem
Different ceramic processes will affect the effectiveness of decals. For example, the rough surface of wine bottles will often cause several problems. If the decals are applied and left for half an hour, they will fall off. This is mainly because the surface is not smooth enough. We usually do special treatment to enlarge the small patterns or the overall base film to increase the strength of each pattern. If the adhesion is still poor after the decals are applied, we can only increase the baking temperature or keep them warm in the kiln for a longer time.
Our Products
►The pattern on the souvenir ceramic coffee mug is made by decal technology. Modern equipment and traditional craftsmen combine to create a unique souvenir.
►The cup body is the pattern of the 2024 French Olympics, which is of great commemorative significance.
►This souvenir mug supports pattern customization, packaging customization, and shape customization, so you can create your own souvenir ceramic cup.
The Olympic souvenir cup has a suitable capacity, and 12oz can easily meet your daily drinking needs.
The cup handle is ergonomically designed, comfortable to hold, and the porcelain is thick and not hot.
We are a professional ceramic manufacturer with a daily volume of up to 80,000 pieces, flexible production, and timely delivery.
We are online 24/7 and can respond to your needs quickly.
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