PET Film PET molecular structure is highly symmetrical, has a certain ability to crystal orientation, due to its molecular particularity, the general coating is difficult to attach on its surface, directly on its surface for spraying or printing, the coating is easy to peel, fall off. In order to increase the adhesion of PET material, it is necessary to pretreat its surface. There are mainly the following ways: [1] Corona treatment By corona treatment, the molecular structure of the substrate surface is rearranged to produce more polar parts, which is conducive to the adhesion of foreign objects. In order to make the PET substrate Dyne value should not decay with the passing of time, secondary corona treatment should be carried out on the PET substrate surface when spraying and printing. The machinery is expensive and complex to operate, and is not used by small and medium-sized enterprises. [2] Flame treatment The flame treatment head is covered on the PET surface, so that it instantly reaches a high temperature of 1000 degrees Celsius, and at high temperature, the macromolecules on the PET surface undergo oxidation reaction to produce polar groups, thereby increasing its adhesion. Due to the flame treatment temperature and the contact distance between the flame and PET, the PET surface will be burned due to poor operating contact or too long contact time. [3] PET Promoter / primer 1.With PET Promoter / primer on the PET surface for 10-15 μm spraying (coating), after drying can be rolled up, and can be reprinted or sprayed on its coating at any time within a year. 2.With PET Promoter /primer main agent, can add color paste, gold and silver powder, conductive material, magnetic material on PET material screen printing, spraying, printing. 3.PET Promoter / primer low price, easy to operate, widely used in film printing, keyboard screen printing, conductive, magnetic coating carrier, model pre-coating PET material. If you want to know more about the product information, or need samples, please contact us.

Leather finishing is generally divided into bottom coating, middle coating and top coating three parts. The bottom coating requires strong adhesion, hiding power, good embossing formability and stereotyping, and the middle coating further covers and corrects the color, and finally achieves the visual and physical performance requirements through the top coating. With a specific top coat, the effect of extinction or light can be created. Waterborne polyurethane resin is the main material commonly used in leather coating. Its film forming performance is good, the bond is firm, and the coating has the characteristics of high wear resistance, high elasticity, water resistance, weather resistance, cold resistance, chemical resistance and so on. After finishing, the finished leather feels full and comfortable, which improves the grade of the finished leather and plays a role in protecting the leather. In order to meet customers' pursuit of quality and meet the most stringent environmental requirements, Sinograce Chemical launched two single-component waterborne polyurethanes, which are polymerized from aliphatic isocyanates. Excellent adhesion, good adhesion resistance, comfortable feel, no yellowing, good weather resistance. The products are widely used in leather shoes, belts, sofas and luggage leather and other leather products. For leather top finish to provide excellent gloss and permeability, excellent wear resistance and weather resistance. Product features and applications PU-403 PU-404 Very high gloss and excellent transparency Natural light, high penetration High hardness, high temperature and high humidity resistance High hardness, good flexibility Feel smooth, excellent water resistance Feel smooth, good weather resistance, solvent resistance Low odor, low VOC, no APEO, NMP and tin substances Low odor, low VOC, no APEO, NMP and tin substances If you want to know more about the product information, or need samples, please contact us.

1. Molecular structure The basic structure of acrylic resin contains a large number of carboxylic acid groups, and it is copolymerized with other monomers. This structure determines that the acrylic resin has a high cross-linking density and strength, which can effectively prevent the penetration and corrosion of chemical substances. 2. Physical properties Acrylic resin has excellent weather resistance, heat resistance and chemical resistance, and is not easy to be eroded by water, acid, alkali and other chemical substances. In addition, acrylic resin also has good wear resistance and UV resistance, which can effectively extend its service life and protect the surface of objects. 3. Application fields Acrylic resin is widely used in industry, construction, coatings, electronics and other fields. For example, acrylic resin can be used in the manufacture of anti-corrosion coatings, pipes, plastic products and other industrial supplies; In the field of electronics, acrylic resins are widely used in semiconductor packaging, optical devices and other aspects. In summary, acrylic resin has high crosslinking density and strength, excellent physical properties such as weather resistance, heat resistance and chemical resistance, which together make acrylic resin have excellent anti-corrosion ability. Sinograce Chemical production of a variety of water-based acrylic resin and polyurethane resin, welcome to consult

This is a modified acrylic copolymer emulsion without solid resin, specially designed for gravure and flexographic printing inks. It has a low viscosity and excellent pigment wetting and color development capabilities. It is highly compatible with the vast majority of resins on the market. Recommended application fields: surface printing of high-end paper and paper products, water-based ink for cigarette packaging, water-based varnish and clear lacquer, printing of flexible packaging, paper boxes, beverage packaging, etc. Product Feature ①Good resolubility, easy to wash, good cleaning, no blocking plate, no fog plate ②can be directly grinding color paste; Any proportion dilution with ethanol and methanol; Good wetting dispersion and grinding effect with various pigments ③Low odor, low VOC, suitable for a variety of printing applications with high environmental protection requirements. ④Good film formation, excellent temperature resistance, printing products do not backstick, heat resistance excellent ⑤Excellent compatibility with most water-based resins, no thickening, no reaction.