With the improvement of social progress and people's awareness of environmental protection, water-based ink in the field of packaging printing ink has attracted much attention.Water-based ink is more widely used in the fields of paper, food, medicine, packaging and printing because it has very low organic volatile matter (VOCs) and green environmental protection. However, in the field of gravure printing based on polyvinyl chloride (PVC) plastic film material, it has just begun to develop.This is mainly because water-based ink in PVC and other plastic surface packaging printing still has poor color fastness to light poor adhesion poor dry slow packaging printing dark gloss and easy to appear small white spots and other shortcomings, resulting in not all aspects of application and promotion. Water-based ink is water as a solvent or dispersant of the ink, which is mainly composed of linking pigment and additives known as ink heart water-based ink connecting material is the technical key to deal with the above problems.Water-soluble resin linker is the universal linker of water-based ink, which usually selects synthetic resin with high acid value, and then neutralizes into salt through volatile amine reagent.At this stage the study of water-based ink connection material mainly gathered in the synthesis of modified this aspect, such as using butyl acrylate, methyl methacrylate acrylic hydroxyl propyl acrylate and diacetone acrylamide as monomer, adipic acid hydrazide as crosslinking agent, according to the indoor temperature since the crosslinking reactions used in water-based ink water-based acrylic resin was synthesized.The water-based ink prepared from this resin was printed on polyethylene (PE) plastic substrate. The results show that it has the characteristics of low water absorption and good film forming ability and high fastness to adhesion.In addition, there are also many scholars on the thermal stability of water-based ink connectors, water fastness, drying rate, resolubility, hardness, impact resistance, solvent resistance and other properties carried out research. The water-based polyurethane with high solid content was prepared by using small molecular chain extender of diisocyanate and polyester polyol with symmetrical structure, which achieved good water resistance, drying rate, thermal stability and fastness to adhesion.From the current literature, there is little research on the influence of water-based ink connectors on color fastness to light in plastic printing.Although the influence of water-based ink on color fastness to light in PVC edge-sealing strip printing was studied, the factors affecting color fastness to light were not analyzed, and the water-based ink bonding material was not further explored.Therefore, it is of great significance to study the influence of water-based ink connectors on the color fastness to light of PVC plastic printing. Anhui Sinograce Chemical Co., Ltd.(Sinograce Chemical) is mainly engaged in the bus...

Flexo printing ink characteristics: 1 Water-based ink (mainly used for paper printing) Water-based ink is the biggest characteristic, the use of water-soluble or water-dispersive resin as a linker, reduce the discharge of organic volatile matter, it can completely eliminate some toxic substances to the human body and the pollution of packaging goods.Water-based ink makes less investment in environmental protection, no need to set up fire protection device solvent recovery pollution-free discharge device.Water - based ink viscosity stability in use, do not need viscosity control equipment.Printing machine is easy to clean and low cost, strong coloring power.However, the disadvantage of water-based ink is not suitable for film printing, slow drying speed, poor gloss, poor water resistance, affect the paper scalability and corrosion of the printing press. 2 solvent (including alcohol soluble) inks (mainly used for plastic printing) Solvent-based ink is a kind of ink commonly used in various printing methods, with bright color, fast drying speed, good gloss and so on.In recent years, in the packaging printing of plastic film, flexographic printing ink is vigorously promoting the application of alcohol-soluble ink, because alcohol solvent is the least toxic organic solvent, and there is no corrosion and damage to the flexible version.Good alcohol-soluble ink has the advantages of good fluidity, good drying speed, strong adhesion, strong gloss and bright color.Of course, alcohol solvents are harmful to the environment and safety. 3 Flexible UV ink (universal, paper and plastic film can be printed) UV ink is the use of a certain wavelength of ultraviolet radiation, through the photochemical reaction, so that liquid UV ink into solid ink,UV ink features: safe and reliable, no solvent emissions, non-flammable, no pollution of the environment, suitable for food and drink, tobacco, alcohol, drugs and other health conditions require high packaging printed matter.Flexo PRINTING UV ink in the field of instrument packaging in foreign applications for many years, without any problems. Anhui Sinograce Chemical Co., Ltd.(Sinograce Chemical) is mainly engaged in the business of chemical products,such as printing ink.Sinograce Chemical is mainly engaged in the business of screen printing ink and other product series.Good materials, advanced production technology, and fine manufacturing techniques are used in the production of chemical liquids. It is of fine workmanship and good quality and is well sold in the domestic market.Welcome to learn about flexible ink customers, please contact the business email vivisinograce@outlook.com

Water based polyurethane adhesive is a kind of high-grade adhesive, with excellent flexibility, impact resistance, chemical resistance and wear resistance, the most important is its low temperature resistance.It has adsorption and chemical bonding effect on many kinds of materials. It can not only bond porous materials, but also bond smooth surface materials. It is widely used. Polyurethane adhesives have strong adhesion, most water based polyurethane adhesives do not contain NCO group, but there are ammonia ester bond urea bond ether bond ionic bond, so the adhesion of a variety of substrates is strong, good affinity, because waterborne polyurethane contains carboxyl hydroxyl and other active groups, under appropriate conditions can form crosslinking, improve adhesion.The viscosity of waterborne polyurethane is generally adjusted by water-soluble thickener and water, which is easy to operate and easy to clean up the residual glue. Can be mixed with a variety of water-based resins, conducive to improve performance and reduce costs, but pay attention to ionic properties and acid alkaline, to prevent condensation. In addition to the added polymer thickener, the main factors affecting the viscosity of water based polyurethane adhesives are ion charge particle size and so on.The viscosity of water-based adhesives is lower than that of solvent-based adhesives with the same solid content.Due to the poor volatility of water than organic solvents, waterborne polyurethane adhesives dry slowly, and due to the large surface tension of water, the wetting ability of surface hydrophobic substrate is poor, when most of the water is not volatilized into the air from the adhesive layer or absorbed by porous substrate heating and drying, it is not easy to get a continuous adhesive layer.Because most waterborne polyurethane adhesives are made of hydrophilic polyurethane as the main solid component, and sometimes also contain water-soluble polymer thickener adhesives, after drying the film, if there is not a certain degree of crosslinking, the water resistance is not good.In recent years, a great deal of research has been carried out and great progress has been made on problems such as slow drying speed of waterborne polyurethane adhesives, poor wettability of non-polar substrates, low initial viscosity and poor water resistance.The results show that if the solid content is increased to more than 50%, the drying speed is similar to that of common solvent-based polyurethane adhesive at the drying temperature of 40~60.Blends with other emulsions (such as EVA acrylate emulsion, etc.) to form interpenetrating network or graft structure, which can improve the initial viscosity and bonding performance, and reduce the cost. Crosslinking method can improve water resistance and heat resistance.Polyurethane adhesives have the advantages of adjustable softness and hardness, low temperature resistance, good flexibility, high bonding strength and so on. They can bond a variety o...

Water - based ink is composed of adhesives pigment additives and other substances such as uniform slurry material,Binders provide ink with the necessary transfer properties, pigments give ink color. Water-based ink linker is mainly divided into two types: water dilution and water dispersion.The former can be used in many types of resin, such as maleic acid resin lac maleic acid resin modified shellac ulatan water-soluble acrylic resin and water-based amino resin, etc.The water-dispersed linker is obtained by polymerization of emulsified monomer in water. It is a two-phase system, in which the oil phase is dispersed in the water phase in granular form. Although it can not be dissolved by water, it can be diluted by water, so it can also be considered as oil-in-water emulsion. 1.water-based ink Water-based ink, ink stability, bright color water-based ink by water-based resin deployment, soluble in water, water dilution, the advantage is no organic solvents, reduce solvent volatilizing, can prevent air pollution, does not affect human health, not easy to burn, belongs to environmental protection ink.Waterborne ink is important, cheap, good post-press adhesion, fast drying, water resistance is usually used in food, drugs, beverages and other industries, packaging and printing industry is also widely used. 2.oil-based ink oil-based ink, solvent-based ink, insoluble in water, soluble in organic solvents.oil-based ink can be diluted with organic solvent, can be printed on absorption surface and non-absorption surface, not easy to fade after printing.Oil-based ink is characterized by large ink viscosity, and fast dry water resistance soft light resistance is quite good.When using ink is more economical, effective cost saving oil-based ink, but also environmentally friendly oil-based ink, without machine solution can be sprayed.It is mainly used on the surface of metal, plastic, wood, aluminum foil boxes and building materials. Anhui Sinograce Chemical Co., Ltd.(Sinograce Chemical) is mainly engaged in the business of chemical products,such as printing ink.Sinograce Chemical is mainly engaged in the business of screen printing ink and other product series.Good materials, advanced production technology, and fine manufacturing techniques are used in the production of chemical liquids. It is of fine workmanship and good quality and is well sold in the domestic market.This is our mailbox sales@sinogracechem.com, welcome to consult.