How to distinguish between over-glaze and in-glaze for bone china cups?

Decal paper is a decorative technique for bone china cups, which is more convenient than hand-painted, saves labor and time, and is convenient for mass industrial production of porcelain. The porcelain of decal paper is mostly over-glaze and in-glaze. The following describes how to distinguish between overglaze and underglaze. Speaking of decal porcelain, then you must mention the hand-painted bone china cup. The previous information has introduced in detail the meaning and difference between decal paper bone china cup and hand-painted bone china cup, here is a brief mention. Decal paper porcelain is made of uniformly printed pattern decal paper, so the porcelain patterns of the same kind of pattern are exactly the same, while hand-painted porcelain white porcelin dinnerware will draw different patterns due to the painter’s brushstrokes, so porcelain with the same pattern There will be subtle differences and will not be exactly the same. Of course, the differences between hand-painting and decal paper craftsmanship, firing process, etc. will not be repeated one by one. If you are interested, you can browse the related articles on the right. As for overglaze, underglaze, and underglaze, it is a question of glaze, color material and firing. The glaze, color material, firing temperature, etc. required for the configuration of overglaze, in-glaze or underglaze are all exquisite. Roughly speaking about their respective definitions. The underglaze color, as the name suggests, is made by drawing patterns on the blanks and then applying glazes and firing them at a high temperature. The steps of in-glaze color and over-glaze color are roughly the same, that is, painting or decal paper on the glaze surface, and then firing it. The firing temperature of the overglaze color is low, so the pattern floats on the glaze surface, hence the name overglaze color. As for the in-glaze color, the high firing temperature causes the glaze surface to melt and the pigment on the glaze surface sinks into the glaze surface. Called the glaze color. According to the above definitions of overglaze, underglaze and underglaze, it can be known that only the overglaze is floating on the glaze, and the rest is either sinking in the glaze or hidden under the glaze, so there are the following two Small points can be distinguished. First, you can fold the ornament of the appliance to see if it is smooth, and second, you can touch the flower ornament with your hands to see if it is smooth. Smooth is the in-glaze color, and the non-smooth is the over-glaze color.
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