Thermal Transfer Technology and Application Solutions (11-20)

11, then talk about plastic laminated PVC card production method

1. Material: white, gold, silver card printing material - two transparent PVC printing materials, thickness 0.25mm (only one side can be printed); medium white or gold, silver PVC one, 0.3mm thick. Small A4 format, can make 10 standard cards.

2. Production method:
1 Print Graphic: Print the image on the printed surface of the transparent PVC printing material (coated, not shiny side) with an appropriate resolution using an inkjet printer. Print resolution should not be lower than 720dpi.
2 Plastic: Place the printed transparent PVC on both the upper and lower sides (in the picture), white card or gold, silver card in the middle (protection film on both sides of the material should be removed). Then use a plastic sealer to seal the temperature of about 120-160 degrees (plastic sealing temperature can be adjusted according to the plastic sealer plastic effect; can also be 100-120 temperature, continuous plastic 3-4 times, so transparent PVC surface protective film is relatively easy Removal, better synthesis.
3 points cut into cards: cut the entire plastic PVC cut into small cards, and then remove the protective film on the surface of the small card (the protective film of the printing material can also be torn off before plastic sealing, but may affect the The brightness of the card surface.

3. Printing Applicable: Various types of printers can be used for printing with ordinary ink (dye ink, pigment ink). Images printed on PHOTO series printers are better.

4.Characteristics: It is simple and fast to produce;

5. Note:
1 After printing the graphic, it should be dry (about ten minutes) and then plasticized.
2 Adjust the optimal plastic sealing temperature according to different laminators. If the temperature is too high, the PVC will be deformed. If the temperature is too low, it can be easily stratified Can also be 100-120 temperature, continuous plastic over several times, so transparent PVC surface protective film is easier to remove, the synthesis effect is better.
3 The preservation of PVC card material should pay attention to moisture.
4 Please use high-quality ink to enhance the lightfastness of the image.

12. How to use traditional thermal transfer coating?

1. It can be directly sprayed, hand brushed, soaked or poured on the work surface. When the coating on the surface of the work is drained and no longer flows, put it into the oven that has been heated to 220°C and bake 5-10 Minutes, 130 °C for about half an hour, if it is found that the yellowing is too long, or the temperature is too high. If the transfer is sticky paper baking time is too short. Suitable for large amount of friends.

2. The amount of 1 liter of the coating, you can spray 8 square meters of work, or about 300 mugs.

3. Application range Plank, metal, stone and other flat materials, can withstand high temperatures to 220 degrees, more than 10 minutes can be used.

4. Production process 1 First wipe the surface of the media with the detergent inside the detergent;
2 Turn on the oven or oven while wiping the media and let it start to warm up.
3 Soak the cleaned media in a coated container and apply the coating evenly over the surface. Take out and put it on a shelf to dry. When no coating has flowed out, place it in an oven that has been warmed up to 220 degrees and let it cook for 10 minutes. Use it after it is removed.

5. Precautions 1 When baking a metal plate, be sure to dry it before putting it in the oven, otherwise it will blister.
2 Coatings produced by some companies require a mixture of two solvents (ie, two-component coating).
3 baking free coating does not need to enter the oven, can be dried at room temperature.

13. What is Teflon thermal transfer coating?

Teflon, also known as Teflon, Teflon, chemical name: Polytetrafluoroethylene (PTEE), abbreviated as F4

Teflon has the following characteristics: high resistance, low temperature resistance, corrosion resistance, non-stickiness, low friction, wear resistance, moisture resistance, high insulation;

In general, Teflon is extremely stable in chemical properties, and it is difficult to decompose and have low adhesion. After repeated experiments, the company has successfully applied it to the thermal transfer industry with strong acid catalysis and special treatment, and developed a two-component free baking system. The Teflon thermal transfer coating can be dry in 4 hours and complete curing cycle in 24 hours, but it takes 6 days after achieving the highest hardness, adhesion, and chemical resistance. It is also possible to accelerate the curing cycle by baking at 50°C for one hour after the film has been applied for 8 hours. This product can reduce the coating process, which is the most complicated one in the coating process, saves energy and avoids yellowing of the baked coating. It is especially suitable for coatings that cannot be baked for a long time (such as wooden jigsaw puzzles) and Mass production factory processing image cups. Its coating performance test is as follows:

Gloss (60 degrees Celsius) 85
Pencil hardness 3H
Adhesion (cut 1mm) 100/100 1
Curved 1mm No cracks No drop through Impact resistance 50Kg.cm Solvent resistance (100% methyl alcohol wash) 160
Acid resistance 10% Hc 115 minutes No change Salt spray resistance 2000 hours Qualified resistance Artificial aging 5000 hours Qualified

14, coating removal liquid use method?

The coating removal solution is mainly used for printed ceramic articles, metal plate keychains, ZIP lighters, etc. It is not suitable for sports pots and pearl plates because of their special coating. When used, soaking or brushing can be used. When the damaged coating is soft, it can be wiped off with coarse cloth or paper, and then the grease can be completely removed with xylene, alcohol, or dishwashing detergent. If it is a bad porcelain plate, the porcelain cup is most easily removed when it has just finished heat. This product is highly corrosive, wear anti-corrosive rubber gloves when in use, do not touch the skin and eyes.

15. How to use thermochromic coating?

At present, the company is developing the following thermochromic coating: black, red, yellow, blue, can also develop the derivative colors of these colors, mainly used for mugs. When you pour hot water, the color gradually fades out to reveal the transferred pattern, and it cools and returns to its original shape.

Traditional color changing cups are pre-coated with a color-changing coating to retransfer the pattern. The disadvantage is that the traces of the transfer ink can be seen in detail because the color-changing coating is underneath; our product is first printed with a pattern and then coated, when heated The color of the coating gradually fades and the image slowly shows up. After cooling, there is no image at all and it really gives a magical feeling.

16, standard baking coaster can bake small caliber cup?

There are two standard baking mats and small-caliber baking coasters. The standard mat is usually called I-type baking coaster, which can be baked on the 7.5-9cm porcelain cup; the small-caliber coaster is the type II baking coaster, which can be baked on the 5-7.5cm cup.

Here, we provide a simple and effective way to allow standard baking coasters to be baked on smaller diameter cups such as 189 bone china cups, which not only reduces the capital investment in your equipment, but also reduces the trouble of replacing the coasters. That is, in the standard baking mat, a high-temperature thermal conductive silicone pad with a size of 25×11cm and a thickness of 3mm is placed in the standard baking cup pad (Taiwan does not stick to the cup, and the image is blurred due to too long heating time), and the baked small cup is tested. It can be baked at 180oC for about four minutes.

17. What kind of inkjet paper is better for sublimation ink?

In addition to deep-colored textiles, thermal sublimation inks are used for thermal transfer of other items. Many people have a misunderstanding that the better the inkjet printing paper, the higher the resolution. The stronger the ink-sucking ability of the inkjet paper, the more difficult it is for the sublimation ink particles to be vaporized and released from the inkjet paper. Therefore, the surface of the thermal transfer material on the substrate is light in color and the color is not abundant. The use of cheaper ones, in addition to containing more harmful substances (some of them even smell a pungent odor), and residual chemicals will dissolve some of the sublimation inks, will not achieve the maximum amount of restored images. The role. Sublimation special ink-jet printing paper can sublimate more than 90% of the ink into the substrate coating (ordinary ink-jet paper can only be about 50%), to maximize the reduction of real colors, but also make the heat transfer products can be longer Keep bright colors! Thermal sublimation special ink-jet printing papers vary from place to place. There are common U.S. papers, Korean papers, Dutch papers, Japanese papers, Italian papers, and Taiwanese papers. Domestic papers are also available.

18, is not baked porcelain cup or porcelain plate immediately after quenching it into the cold water?

Not necessarily, it will not be lost in water to prevent the ink from continuing to evaporate, as some websites say. As long as the printing material leaves the hot part of the ink will not be sublimation and volatilization, so the natural cooling or air cooling can be, and some ceramics with a low thermal expansion coefficient do not bake when baked, thrown into the cold water will burst, especially Be especially careful in winter. If you really want to force cooling, you can put it into natural cool water in summer, and it is better to put warm water in winter first.

19, high temperature porcelain phase is how is it?

A modified Lexmark or other brand (Lenovo) low-end printer (a few hundred dollars), an electric stove, a total value of less than 1,000 yuan, and the printer is not printing ink, but the glue, and then hand-colored dusting , brush sweep powder, etc., color separation and then take the high-temperature electric furnace baked porcelain powder and porcelain glaze combined together. This method can only print flat tiles, cup tray is currently doing high-temperature ceramic phase process.

20、Introduction of Ceramic Flower Transfer

There are many methods of ceramic decals. The common method is: first coat the surface of porcelain with a gelatin solution, then apply the film of the decal transfer paper on the porcelain, press it down flat, and after the glue is dry, immerse the porcelain into water and bake. Gum arabic gum dissolves after swelling, so that the transfer paper graphic is fixed on the porcelain surface. Remove the copy paper and wash away the residual glue. After drying, put it in a kiln (high-temperature oven) and calcine it at 750-850oC for 4-5 hours. The pigment on the transfer paper will dissolve on the porcelain and show specificity. Color pattern.