China manufacturers of customized grouting Starbucks ceramic coffee mugs

 From Xinxiang China Ceramic Mug Manufacturers,The so-called grouting molding process is to inject mud into the mold of gypsum. Because the gypsum mold has the function of absorbing water, the gypsum can absorb the water from the mud on the inner wall to form the green body of ceramic  coffee cup, and then pour out the slurry which can not be absorbed dry in the mold, so as to form the green body structure of the custom starbucks ceramic mugs.

The advantages and disadvantages of ceramic mugs made by grouting technology is a pure manual molding process, so the production efficiency is relatively low and the cost is high. But the hardware equipment used is gypsum mold, so the mold production cost in the early stage will be much lower than that of the machine press production process. So a lot of small orders are mostly completed by grouting technology.

However, the cheap china ceramic tea mugs produced by grouting technology is prone to deformation. Because the product regularity of grouting molding is not as good as that of machine pressing process, so there will be deformation phenomenon when firing.

Some special-shaped ceramic cups must be made by grouting technology, such as square ceramic coffee cups, or semicircular or elliptical ceramic mugs. These molding cup machine pressing process can not be completed.

Xinxiang mug factory - Some points for attention of customized ceramic coffee mugs

 From Xinxiang Ceramic Mug Manufacturers,Ceramic mugs material has bone china, magnesium strengthening porcelain, white porcelain, stoneware. Our most common ceramic mug is mainly made of white porcelain and reinforced porcelain. The customization process of Chinese ceramic coffee mugs is as follows:

1. It is better to provide the original ceramic coffee mugs;

2. If the original ceramic mugs is not available, provide detailed and clean cup type drawings or product pictures with dimensions;

3. Provide Pantone color number of ceramic cup body;

4. Provide AI and other formats of printing pattern manuscripts (vector files);

5. Printed draft provided by Pantone;China ceramic mug factories

6. Provide material requirements of customized ceramic coffee mugs.

China mug suppliers : Manufacturing technology of round and square ceramic mugs

 From Xinxiang Ceramic Mug Manufacturers,The most common ceramic mug is round inside and outside, but there are many ceramic mugs with inner circle and outer side or ceramic cup with inner circle and inner side. Is the molding process different between the inner and outer ceramic mugs?

All ceramic mugs, as long as they are inner circle, can be made by machine pressing, and as long as they are inner square, they must be made by grouting technology.

The conventional custom ceramic coffee mugs with inner circle conforms to the basic structure of rolling head to press the product, so it can be made by mechanical pressing. The molding rate of press products is high, it is not easy to change and the production efficiency is high.

For the inner products, the machine pressing process can not suppress the square structure in the cup, so it can only be made by grouting process. But the grouting process is a pure manual production line, so the production efficiency is very low, and the product variant is higher than the machine press molding process.china ceramic mug suppliers

Therefore, the products of inner side are more expensive than those of inner circle products. The high price lies in the labor cost and the loss of defective products.

China ceramic mug manufacturers : Various raw materials for ceramic coffee mugs (2)

 From Xinxiang Ceramic Mug Manufacturers,Porcelain clay is metamorphosed by mica and feldspar, in which sodium, potassium, calcium, iron, etc. are lost, combined with the change of water, which is called "Chinalization" or "KAOLINIZATION". Although there is no definite conclusion on the cause of the porcelain vitrification in the academic circles, it can be roughly considered that the feldspar was metamorphosed by the action of hot springs or water containing carbonic acid gas and the gas produced by the decaying plants in the marshland. This may be the reason why porcelain clay usually occurs near hot springs or lime beds. The melting point of porcelain clay is about 1780 degrees. In fact, the melting point of porcelain clay is slightly lower because it contains impure substances.

Pure porcelain mugs custom clay (kaolin) stock is not much, and the so-called pure porcelain clay, is not as strong as clay viscosity. Generally speaking, if the porcelain clay is observed under a microscope, most of it has a white silk like luster and glittering silver. It is a very small crystal. This is the so-called pure porcelain clay. In addition, it also contains the fragments of unmodified feldspar, quartz, iron ore and other rocks as the source of porcelain clay.

The composition of pure porcelain clay is SiO2 46.51%, Al2O3 39.54%, H2O 13.95%, and the fusibility is 1780 degrees.

The most advanced of custom ceramic mugs is porcelain. Which rock is the best for porcelain? Because porcelain must be white. As a result, we have to try our best to avoid the iron content which can make the ceramic coloring. The rocks with less iron content but mainly composed of silica and alumina are granite, granite porphyry, quartz porphyry, quartz trachyte and the hydraulic rocks formed by the disintegration of these rocks.

The granite and even quartz trachyte mentioned here (that is to say, in igneous rocks, it also contains more silica and alumina, but less iron molecules). They are mainly quartz and feldspar, and contain some mica and black green or black brown minerals rich in iron (iron oxide). If you look at the rocks carefully, you can see many transparent grains like glass and bright white or reddish grains like porcelain. The former is quartz and the latter is feldspar. Although the chemical compositions of the four rocks are the same, different rocks are formed because of the different sizes of feldspar and quartz. The granite is composed of relatively large grains (1 ~ 7 mm in diameter). Quartz trachyte is a kind of small grains of quartz and feldspar in the compact plain where no particles can be seen. Granite porphyry and quartz porphyry are between the two. They contain large grains of quartz in a compact plain. The difference in the structure of these rocks is mainly due to the length of time from molten magma to cold setting, in which granite is the longest, quartz trachyte is the shortest, while granite porphyry and quartz porphyry are cold solidified in the time between the two. The main reason is that ceramic raw materials are not completely melted at high temperature like rocks, and the required cold setting time is shorter, which is the biggest difference between natural rocks and artificial rocks, namely ceramics. Sometimes things with the same composition as quartz trachyte flow to the ground in a molten state and then suddenly freeze, so as to form glass without quartz, feldspar and other particles visible to the naked eye like the above-mentioned rocks, but form all the same glass, namely obsidian and barite. It can be seen that the essence of rocks and custom disney ceramic cups is the same, only the difference between natural and artificial.

In granite, there are many kinds of silica, such as semi granite and pegmatite granite. The grains of feldspar and quartz in the former are fine, while those in the latter are formed by extra large grains of feldspar and quartz. Some of them concentrate the same material in some parts and become pure quartz vein, or pure feldspar vein, and some are transformed into semi granite (in some places, the original semi granite is used as ceramic raw material).

China ceramic mug suppliers : Various raw materials for ceramic coffee mugs (1)

 From Xinxiang Ceramic Mug Manufacturers,The raw materials of ceramic mugs are mainly from rocks, which are mainly made of silicon and aluminum. This kind of rock is also used as raw material for ceramic mug, which is hardened by artificial heating, which is similar to the formation of igneous rock. Therefore, from the chemical point of view, the composition of the custom ceramic coffee mugs is no different from that of the rock. If it is a ceramic cup made of silicon and aluminum, the main raw materials are as follows:

1. Quartz - chemical composition is pure silica (SiO2), also known as silica. This kind of mineral has no stickiness even if it is broken into fine powder, which can be used to make up for the defect of excessive viscosity of ceramic raw materials. When the temperature is above 780 degrees, it is unstable and becomes tridymite, and begins to melt at 1730 degrees.

2. Feldspar is a compound mainly composed of silica and alumina, mixed with sodium, potassium, calcium, etc. There are many kinds of them because of their different components. Generally, some rocks with more feldspar are called feldspar, and some are named after their origin. Several representative feldspars and their compositions are listed in Table 1. The first three are pure theoretical components, while the latter contain all impure materials in rocks.

Albite and anorthite melt with each other in various proportions and become various feldspars. These are called plagioclase and their properties depend on the ratio of albite to anorthite. There is also a kind of orthoclase (K-feldspar) with the same composition but slightly different shape, which has been misinterpreted as orthoclase. In fact, this kind of feldspar should be called "microcline".

3. Porcelain clay (also known as "kaolin") - porcelain clay (h4al2si2o9) is the main raw material of wholesale ceramic mugs. It is named after the kaolin produced near Jingdezhen, the first kiln factory in the world. Later, the Chinese pronunciation of "kaolin" evolved into "kaolin" and became an international noun. Pure porcelain clay is a kind of white or gray white soft mineral with silk luster.

China ceramic mug manufacturers tell Formation and prevention of pinhole in ceramic mugs

 From Xinxiang Ceramic Mug Manufacturers,In the production of ceramic mugs, pinhole is a very common quality problem. In particular, the problem of pinhole is more serious. So what are the reasons for pinholes on ceramic mugs? How to prevent it?

The formation and prevention of pinhole on ceramic mugs can be divided into three reasons:

 1. The molding mold is too wet;

 2. The slurry is too viscous;

 3. The grouting speed is too fast.

Therefore, to solve the pinhole problem, we must make a general judgment from these aspects, and then analyze and solve the specific problems. If the mold problem, we should consider whether the mold frequency is too fast, or natural weather problems, or indoor drying equipment problems, or the mold has reached the use limit, need to replace a new mold.Custom ceramic coffee mugs

If there is a mud problem, it is necessary to comprehensively consider various reasons to solve the problem. Mud viscosity is not necessarily due to the small amount of water added during the grinding process or the problem in the proportion of other raw materials. It may be that the viscosity of the mud is affected by changes in weather and temperature. Therefore, it is necessary to comprehensively consider and solve the problem from various aspects.

Of course, the grouting speed should be comprehensively analyzed according to the specific environment, temperature and other factors.Wholesale sublimation mugs

Ceramic mugs with lid products have very complex molding factors, these factors affect and restrict the quality of products, so to learn ceramic technology, we must first develop the habit of thinking about problems from many aspects, which is the premise of learning ceramic technology.

Production process of ceramic coffee mugs china custom mug manufacturers

 From Xinxiang Custom Ceramic Mug Manufacturers,

1. Mugs Molding: making mugs mold with gypsum, in which the mugs body is a mold, and the mugs handle is a mold.

The mugs body mold is a machine press mold, the mugs body is pressed by machine; the mugs handle mold is a grouting mold, the mugs handle is made by hand grouting technology, and then the mugs handle and the mugs body are adhered together.

2. Washing blank: the rough part of the formed mugs body is washed flat and smooth.

3. Glazing: glazing the mugs.

4. Firing: the ceramic mug is fired at 1300 centigrade. After firing, it is our common white ceramic mugs.

5. Inspection object: the finished cup is classified according to the quality standard.

6. Flower baking: paste the paper on the wholesale white ceramic mugs, and then put the cup into the kiln for the second time firing at 800 degree. When 800 degree, it is just the melting point of the glaze and the ceramic pigment on the paper, so the ceramic pigment will penetrate into the glaze and finish the baking of the mugs.

7. Inspection sample: the quality of the mugs with baked flowers is inspected.

8. Packing.

Xin Xiang Ceramic Mug Manufacturers Co., Ltd located in Shandong province China, which is one of the most famous ceramic producing Area. After experienced 20 years of ceramic business and development, we become a professional and reliable ceramic mugs supplier. Our annual turn-over more than RMB300millons .Our factory have SEDEX audit, NBCU audit, Disney audit, Wal-mart audit ect......

Xinxiang company business include ceramic mugs, ceramic coffee cups,sublimation mugs, tea cups and saucers, fine bone china mugs, promotional mugs, eco cups, musical/melody mugs, color changing mug/magic cups, solid color mugs ,coated mug, dinnerware sets, tableware, couple mugs, plates, bowls ect, Materials: porcelain, stoneware, magnesia strengthen porcelain, fine bone china . There are variety designs and shapes for your selection, customers' own designs are welcomed.