Reflective powder can be added into the ink, made reflective ink, screen printing or brushing to fabric or other items. The reflection brightness changes along with the amount of adding powder. Reflective Ink Instructions Mixing Instructions: 1. Choose neutral transparent printing inks 2. Choose reflective powder with small particle size like 20~40um, 30-45um,40-60um , 60-80um 3. Add about 30~50% of reflective powder, by weight, into the clear printing ink. 4. You could add more if brighter ink is required. Adding more powder thickens the solution. 5. Do not grind the reflective powder 6. Use any containers and stir the mixture at high speed. 7. To avoid deposits, you should use high viscosity resins or anti-settling agents. 8. Select a printing ink that is suitable for the surface it is to be printed on. For example, use metal abrasive oil If the surface to be printed on is metal, pls check usage instructions as follows; 1. Viscosity of mixed inks should be between 3000-5000 poise. 2. Viscosity can be adjusted during the printing process with a diluting agent. 3. A base coat of grey or very light color is preferred, especial for uncoated reflective powder. . Applying reflective bead paint on dark colors reduces the reflective effect by as much as 50%. 4. For good retro reflective, the reflective layer should be between 30-50um. 5. If the fastness is not well, little polyurethane can be put in. 6. Ideal mesh size for silk screen printing screens is 60-80 mesh. Smaller screen mesh size are okay as these create a thicker printed layer. 7. One kilogram of reflective powder can be mixed to produce up to 2 litres of reflective ink 8. One litre of ink can cover an area of about 6 square meters. 9. After painting, roll to roll press and dry 3 minute under150°C Solution of getting strong retro reflective: 1. Ink must be clear and transparent, Grey. Yellow. Red will be better. 2. Firstly, print aluminum powder as foundation. Then print with the mixture of ink and reflective powder. 3. Make the reflective powder on the paint surface as more as possible.

Gravure printing ink has been put into production in China for more than 30 years. According to the connecting material, it can be divided into chlorinated polypropylene, polyamide and polyurethane. Chlorinated polypropylene ink currently accounts for half of food packaging, but its development is limited by insurmountable shortcomings:1) non-environmental protection, requiring a large dose of aromatic hydrocarbons such as toluene as solvent, aromatic hydrocarbons volatilized into the environment during the printing process, causing pollution; 2) unsafe, toluene and other aromatic hydrocarbons are slow drying solvents, easy to remain on the ink film, causing pollution. Packaged food is easy to volatilize into the air, harmful to consumers' health. 3) Narrow scope of application, only for BOPP film has good printing adaptability. Because of the low melting point and decomposition temperature of chlorinated polypropylene resin, it is difficult to be used for boiling and cooking food packaging requiring high temperature. Polyamide inks also mainly rely on aromatic solvents. Although there are a few alcohol-soluble products, the poor temperature resistance and water resistance of polyamide resin limit its application in cooking packaging. Polyurethane ink without benzene solvent has the advantages of low toxicity, good printing adaptability to various plastic film materials, high temperature cooking resistance, freezing resistance, wear resistance, good gloss of printing products, etc. Obviously better than the former two, with strong development potential. Black, blue, red, yellow four-printing composite inks for PET, NY, BOPP film were prepared by adding dispersant, dumb powder, environmental protection pigment, solvent and other additives with polyurethane resin as the main linker. It is a polymer used in printing inks. Dyeing power, fineness, viscosity, initial dryness, surface tension, residual solvent and boiling resistance were determined and analyzed. After testing, the series ink formula is simple, does not contain benzene, ketone, solvent residue is less than 1.0 mg/m2, meet the requirements of food packaging. It is a kind of safe, environmental protection boiling general type. The utility model relates to a new gravure printing compound ink product. Vinyl Resin For gravure composite printing inks for flexible packaging of food are mainly used in plastic packaging. The adhesion fastness of the ink obtained from this formula on NY and PET film is much higher than the requirements of domestic industry, and the adhesion performance is excellent. This is due to the strong interaction between the polyurethane resin molecules with polar structure and NY and PET molecules with the same polar structure. Polyurethane resin molecules and PET molecules have ester groups, intermolecular force is strong. The measured value is 100%. BOPP is a typical nonpolar molecule. The interaction between BOPP and polar polyurethane resin molecules is weak, and the b...

Dear Customers, As it's known, the International Workers' Day, also referred to as Labor Day or May Day, comes on this Sunday. More than 80 countries across the globe, including China, are celebrating International Workers' Day on the first of May. To let you know that, as here in China in celebration of the Labor Day, we are having a five-day public holiday from Apr.30th to May.4th. We will be back to work on May 5th, 2022 (Thursday). We feel sorry for any inconvenience to you. However, please feel free to contact us via email at info@sinosunman.com or mobile phone at +86 13721078505 if you there is anything urgent. For inquiries, you are always welcomed to submit through the online inquiry forms. We will respond to you as soon as possible. Sunman wishes you a nice holiday!

The main raw material components used in powder coatings include: 1. Resins are the key component of powder coatings. The range of resins used is increasing steadily in an attempt to meet the more demanding needs of new market sectors. Thermosetting Powders Thermoplastic Powders Epoxy Polyvinyl Chloride Epoxy-Polyester Hybrid Polyolefins Urethane Polyester Nylon Polyester TGIC Polyester Acrylic Polyvinylidene Fluoride 2. Curing agents are used according to the type of resin system employed and the final properties required of the coating 3. Accelerators are used to increase the cure reaction rate 4. Pigments are generally solid particulate materials such as titanium dioxide or carbon black 5. Fillers are used to reduce the cost of the coating formulation and / or to improve specific properties such as flow, surface texture, lubricity, etc. Common fillers are barytes, calcite, mica, talc, whiting, and wollastonite 6. Extenders, such as aluminum silicate, are used to provide opacity and act as a filler 7. Degassing agents are particularly important in low-bake systems. They are used to eliminate / dissipate gas bubbles that may cause film porosity and embrittlement or poor finish 8. Dry Flow agents improve the free flow of powders within the production delivery systems 9. Flow agents enhance film properties and minimize/eliminate surface defects by improving the flow of the molten coating. Examples of flow agents include polyacrylates, silicones, surfactants, and fluorinated alkyl esters 10. Matting agents are used to reduce the gloss of the cured film 11. Texturing agents are used to control/enhance the gloss level of cured films 12. Rheological additives provide viscosity control to molten coatings for improved edge coverage or for textured surface effects 13. Waxes are added to the formulation to provide slip, hardness, scratch and mar resistance, and to act as free flow powders and anti-bridging agents in processing 14. Tribo-charging additives such as antioxidants and light stabilizers are frequently used in powder coatings. Depending on their composition, tribo-static powders require additives, such as HALS to improve their charge ability in addition to their light stabilization properties. 15. Heat Stabilizers are required to be thermally stable and non-volatile during high-temperature powder extrusion and curing processes (electric and direct-fired gas ovens), and to show no discoloration. Various classes of antioxidants have different thermal stabilization mechanisms. High resistance against UV degradation is necessary for all exterior applications. This is achieved through a synergistic combination of UV absorbers and HALS. The raw powder coating materials are generally mixed dry and then fed into an extruder for melt mixing. Once cooled, the extrudate is then chipped and ground into the final product. The chips are ground to a very specific particle size distribution depending on the application.