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Definition of Transfer Printing
Transfer printing refers to the intermediate carrier film graphics using the corresponding pressure transfer to the undertaking of a printing method to print the pattern on ordinary glass is not achievable, the need to use the intermediate carrier coating to absorb the ink to present the image, after the transfer and then the media surface strong adhesion, the formation of personalized products heat transfer coating is a colorless and impurity-free clear polymer material, acrylic resin-based, plus some other resins. It is made of acrylic resin and some other resins! It is suitable for ceramics, stone, metal, and other high-temperature resistant surfaces. The heat transfer effect is clear, colorful, and expressive, with a good degree of restoration, conveying the original effect.
Digital thermal transfer products is not a single product market, it is multi-form, multi-species, a comprehensive market across a variety of industries digital thermal transfer color printing ink through the use of thermal transfer paper can adapt to a relatively wide range of supplies, such as a variety of chemical fabrics, after the coating treatment of various hard materials such as metal, wood, stone, ceramics, glass, PVC, leather PU, etc., combined with thermal transfer technology to no plate making method The production of personalized products brings a new dimension to the development of the personalization market. These materials can be used in the garment, printing and dyeing, decoration, craft, light industry, gift, advertising, art, photography, tourism, building materials, and other industries! For different media, the coatings used are naturally different.
The production process of the lithographic thermal transfer is, firstly, to cut the roll of thermal transfer paper to the required size using a film cutting machine. Secondly, the thermal transfer paper film is attached to the surface of the workpiece and placed on the flatbed thermal transfer printing machine. Thirdly, push the flat plate to the heating area of the flat plate thermal transfer machine, press the pressure plate switch, the pressure plate will be thermal transfer paper pressed tightly on the workpiece, heating, and insulation for one minute. Fourthly, lift the platen, push the workpiece to the piece section, remove the transfer film to remove the workpiece, and check.
Range of Applications
Thermal transfer technology is widely used for electrical appliances, daily necessities, building materials, and decoration. Due to its corrosion resistance, impact resistance, aging resistance, wear resistance, fire resistance, and the ability to stay in color for 15 years in outdoor use, almost all goods are labeled in this way. For example, if you open a mobile phone case, you will see a dense label with a barcode on the inside. Many labels are required to withstand the test of time, long-term non-deformation, non-fading, not due to contact with solvents on the wear and tear, not because of the higher temperature on the deformation and discoloration, so it is necessary to use a special material printing media and printing materials to ensure that these characteristics, the general inkjet, laser printing technology is unable to achieve
Thermal transfer printing is a technology that prints patterned patterns onto heat-resistant adhesive paper, which is heated and pressurized to print the patterned patterns of the ink layer onto the finished material. Even for multi-colored patterns, the transfer process is only one process, so customers can shorten the printing process and reduce the loss of material (finished product) due to printing errors. With heat transfer film printing, multi-color patterns can be produced in a single pass without the need for registration, and simple equipment can produce realistic patterns.
Heat transfer printing equipment is used to decorate aluminum-shaped materials, all kinds of metal plates and can achieve the effect of wood products or marble. The heat transfer equipment works according to the principle of thermal sublimation and can quickly transfer the desired wood or marble pattern to the powder-coated surface of aluminum shapes within 3-5 minutes and can penetrate 40-60 microns inside the coating. The aluminum transfer production process involves, firstly, cutting the heat transfer film rolls to the required size using a film machine. Secondly, the cut transfer film is ultrasonically welded into a workpiece wrapping bag using a transfer ultrasonic packaging machine according to the size of the workpiece. Thirdly, the workpiece wrapping bag made of transfer film is inserted on the packaging platform. Fourth, the workpiece wrapped with transfer film on the heat transfer machine trolley platform, in turn, can be put 18 aluminum, the ends of the aluminum connected to the vacuum extraction head and lock, open the vacuum switch, at this time the transfer film tightly on the aluminum. The trolley will automatically send the aluminum to the baking oven, the oven will automatically heat up to 220 degrees and keep warm for 3 minutes, the trolley will automatically exit the oven. Fifthly, the vacuum extractor is released and the workpiece is taken off. Sixth, remove the transfer film and check the quality of the workpiece.
Advantages of Thermal Transfer Printing
- Simple printing steps
- No damage to the material
- Precise printing position
- Ideal for printing images that require color transitions
- Suitable for professional use in more unusual industries
- Suitable for printing on multiple materials
Disadvantages of Thermal Transfer Printing
Professional heat transfer equipment is required, for items such as ceramics and metal, a heat transfer coating is required on the surface.
Definition of Oil Painting
Oil painting, also known as metallic glitter painting, has microscopic metal powder (e.g. aluminum powder, copper powder, etc.) added to the paint base, and light is reflected through the air film when it hits the metal powder. As a result, it looks as if the metal is glittering. By changing the shape and size of the metal powder, it is possible to control the sparkle of the metal glitter paint film; outside the metal paint, a layer of varnish is usually added for protection.
Metallic paints are generally available in both water-based and solvent-based versions. Although water-based paints are environmentally friendly, metal powders are unstable in water and air and often deteriorate due to chemical reactions, so the surface needs special treatment.
The main application area for metallic paints is the automotive industry. The exterior surface of a car painted with metallic paint not only makes the surface of the painted parts look shinier but also changes the color and even the outline of the car at different angles due to the refraction of light. This is one of the reasons why metallic paint is becoming more and more common.
Oil Painting Versus Regular Painting
When comparing metallic paint with ordinary paint, it is clear that metallic paint is not only hard but also can express the beauty of a car’s body. Another reason why metallic paint is becoming more and more common is that it is mixed with metal powder, which makes it harder and less likely to be scratched.
The most typical colors are white, black, red, and yellow. It is not that silver powder cannot be added to these colors, but when the silver powder is added, the color becomes different from the original color. The yellow color becomes a shimmering “golden yellow”.
The hardness of the paint is softer when the car is hit by flying stones at high speed, so it is easier for the paint to peel off. It is important to use plenty of water to rinse off the dust that adheres to the surface of the paint first so that the hard sand does not have the chance to scratch the paint as soon as the rag touches the car.
1. Metallic paint is harder because it is made from copper and aluminum powder, which increases the hardness of the paint.
2.Metallic paint is more durable because it is infiltrated with metal powder, which ensures the hardness of the paint and also ensures better protection against scratches, scrapes, and rubs. Therefore, metallic paint has stronger durability.
3. Metal paint metal luster is more prominent because the composition of metal paint contains metal components, so its metal luster is more prominent, painted on the building can not only make after painting the surface of the building looks shinier, and in different angles, due to the different refraction angle of light will produce different visual effects, so that it is more three-dimensional, to improve the aesthetic sense of the building so that the building has A kind of noble and elegant temperament.
Oil painting has an excellent gloss and excellent hardness to the paintwork though. But it is more expensive and needs to be combined with other materials to achieve the desired effect.
Take the maintenance of automotive metallic paint as an example.
To keep the appearance of metallic paint clean, it is not enough to just wipe dust but to pay attention to frequent and timely cleaning of the vehicle.
To maintain the appearance of metallic paint, waxing is indispensable. But frequent waxing, simply not waxing, and fetishizing the imported wax are inappropriate. As the properties of various waxes are different, their effects and effectiveness are also different, so care must be taken when choosing one. Improper selection will not only fail to protect the body but will also discolor the paintwork. In general, the wax should be considered according to the role and characteristics of the wax, the newness of the vehicle, the color of the paint, and the driving environment of the vehicle.
Professional scratch repair has strict requirements on the operating environment because the most fearful thing about spray painting is the influence of dust and impurities. If dust, operator’s dandruff, or fibers from clothes fall on the exterior surface of the bodywork, spots or bulges can form.
For plastic parts painted on the exterior, a quality cleaner should be used for cleaning; waxing should not be used too hard to prevent penetrating the paint to reveal the underlying color.
Guidance to Key Points
- The substrate needs to be de-rusted and de-oiled and de-dusted and can be de-rusted by pickling, phosphating, electric sanding, manual sanding, and sandblasting. Solvent and white oil can be used for cleaning. If the substrate is rough, it can be scraped and coated with atomic grey or primer and grey with better adhesion and dryness first.
- Air compressors and oil and water filters should be used only after the water has been removed and the substrate dried to avoid pinholes in the paint film caused by water and oil.
- The primer is not dry on the spray topcoat, may occur to bite the bottom or prickly heat, and cause adhesion decline, especially smooth substrates, the shorter the interval between the bottom surface is easy to expose the bottom surface adhesion together with the decline phenomenon, in addition, note that strong solvent topcoat should not match the weak solvent primer.
- With 2K type paint, according to the specified weight than the deployment of curing agent or component B, note: because the density of curing agent than the bottom of the paint, according to visual inspection ratio often add insufficiently. The paint with a curing agent must be completed within the specified activation period, and the excess should not be poured back into the barrel to avoid gumming up the whole barrel.
- With thin material, add a small amount of thinner can bring down the viscosity of the paint, but close to the viscosity, viscosity decline more and more slowly, it is best to have a stopwatch test.
- A thinner model with the wrong, will happen kind of big quality problems: the same series of thinner, also need to choose the right winter and summer according to the temperature change thinner.
- When spraying paint, pay attention to the amount of paint spraying tools, the amount of air, the width of the spraying width, and spraying when walking speed and distance, these parameters and paint construction viscosity, the same, can be adjusted to the degree of atomization. Different paints require different levels of atomization. Different levels of atomization can cause differences in the color, gloss, pattern, and alignment of the same paint construction. If the atomization is too low, the paint film may be uneven, with poor leveling or shrinking pinholes; if the atomization is too high, the paint may lose its light and roughness.