New environmental protection water-based laminated adhesive 1.This new environmental protection water-based laminated adhesive does not contain any organic solvent, has passed the international certification SGS, so it is non-toxic, there is no flammable, explosive danger, please rest assured that the manufacturers in the industry use. 2.Water-based laminated adhesive does not contain toxic heavy metals, in line with the international trade in the relevant packaging laws and regulations. Therefore, the relevant manufacturers do not have to worry about the use of this kind of laminating glue, pollution of the environment, in violation of packaging laws and regulations. 3.For the original use of solvent-based adhesive manufacturers, do not need to replace the laminating machine, water-based laminating glue can be used on the solvent-based laminating machine, so that the relevant manufacturers have no worries, can not replace the adhesive and replace the laminating machine, and in addition to invest a sum of money and worry. 4.For difficult to stick ink, such as black, brick red printed matter, can be used dry coating, general color printing matter, can be used wet coating, coating speed is fast and save electricity, that is to improve efficiency, but also a good way to save cost. 5.We recommend the new adhesive adhesion and durability, moisture resistance, heat resistance, cold resistance are far more than solvent coated adhesive, belongs to high efficiency, energy saving, environmental protection, economic innovation products, fill the domestic gap, the international leading level. 6.Water-based laminating adhesive can also be used for BOPP, PET, coating and other plastic film and paper printing bonding, the application range is also wider. The use of new water-based adhesive film is the general trend, but also has huge social benefits. Water-based film adhesive in the process of use, no solvent volatilization, safety, environmental protection, do not cause harm to the health of production personnel. The use of water-based laminating adhesive for laminating processing, the comprehensive cost is reduced, has good economic benefits. For such an advanced water-based adhesive value we recommend, also hope that the relevant manufacturers use this kind of laminating adhesive as soon as possible.

Existing water-based adhesives are not 100% solvent-free and may contain limited volatile organic compounds as additives to their water-based media in order to control viscosity or fluidity.The advantages are mainly non-toxic, no pollution, no combustion, safe use, easy to achieve clean production technology, etc., disadvantages include slow drying speed, poor water resistance, poor frost resistance. PART 01 Classify 1.Classification by material Polyvinyl alcohol water-based adhesives, vinyl acetate water-based adhesives, acrylic acid water-based adhesives, polyurethane water-based adhesives, epoxy water-based adhesives, phenolic water-based adhesives, silicone water-based adhesives, rubber water-based adhesives. 2.Classification by application Water-based adhesive for construction, packaging, automobile, shoemaking, daily use, water-based adhesive. 3.according to the solvent classification Water soluble and emulsion adhesive two kinds. PART 02 Properties and modification of water-based adhesives Waterborne polyurethane (APU) adhesive APU is a new type of polyurethane system in which water replaces organic solvent as dispersion medium, also known as water-dispersed polyurethane, water-based polyurethane or water-based polyurethane. Waterborne polyurethane with water as solvent, no pollution, safe and reliable, excellent mechanical properties, good compatibility, easy to modify. APU adhesive is non-toxic and pollution-free, and its high molecular weight enables it to form an excellent adhesive film. It has the advantages of low temperature resistance, flexibility, good bonding performance and wide adjustable range of the physical property of the adhesive film. Its molecular structure has flexible molecular chain, showing excellent impact resistance, fatigue resistance, low temperature resistance, but also has the performance of designability, the adhesive layer from flexible to rigid arbitrary adjustable, can meet the bonding needs between different materials; At present, the synthesis method of waterborne polyurethane adhesive has been relatively mature. There are mainly the following methods: (1)Introduce some hydrophilic groups into the structure of polyurethane resin to make it self-emulsifying.  (2)Acetone method: the high viscosity prepolymer is prepared first, and then acetone is added to reduce the viscosity, and then the hydrophilic monomer is added to the water under high speed stirring, and it is dispersed in the water through strong shear. After emulsification, the decompressive distillation to recover the solvent is prepared PU water dispersion system. (3)End-sealing isocyanate method: select an appropriate sealer, protect the end-NCO group of the water-sensitive isocyanate, make it lose its activity, and then add chain extender and crosslinking agent co-emulsion to make emulsion use, through a certain temperature and special catalyst, regenerated into -NCO end-group, chain extension to prepare waterborne polyurethane. (4)End-sea...

During December 10, 2022, customers from Russia have come to visit our company. Foreign trade manager and relevant personnel warmly welcome our customers, and introduced our product which they are interested in detailedly. Water based glue SINOGRACE Chemical has more than 10 years history in exporting chemicals to Russia. Due to the stable quality and considerate service, the chemicals supplied by SINOGRACE receive good comments locally. Now SINOGRACE is a famous and popular chemical brand in Russia. acrylic polymer adhesive,acrylic pressure glue This visit definitely deepens our cooperation with Russia customers and lay the way for further expand our chemicals in Russia.

Thirteen.Skinning There are two common skin phenomena: one is in the packaging bucket of glue surface skin, the other is in the glue tray surface skin. ■ The surface layer of glue in the packing bucket produces crusts 1)If the temperature of glue filtration packaging is too high, it is easy to form crust in the barrel when the temperature drops, which is common in high temperature in summer. Because the glue is cooled slowly, it is easy to occur if the goods are urgent and cannot be packed at the appropriate temperature. 2)The packaged glue will also produce crust if it is exposed to sunlight. ■ Produce crusts in the surface layer of glue on the glue tray 1)The glue tray has a dead Angle (such as the right-angle shape of the glue tray) during the glue rarely flow, the surface of the glue moisture will slowly volatilize, forming a film and crust. 2)The baking road has hot air blowing directly to the glue tray 3)The surface of more glue foam foam is very thin, easy to film. Fourteen.Foam Foam is also divided into bucket foam and glue foam two cases ■ In-barrel foam This situation is mainly due to the violent shaking in the process of handling foam, in addition to the infiltration of more water stirring will also produce more foam. ■ Slow out of the glue tray when there are more serious foam 1)Failure of the glue defoamer or insufficient measurement 2)the speed of the upper cots is too high and the mixing of the glue is too strong 3)The level of the rubber layer and the upper cots are in an inappropriate position, and a large amount of gas is brought into the upper cots when they rotate. 4)The glue viscosity is too high, and the glue foam wall is thick and not easy to burst. ■ More glue foam, the consequences are as follows: 1)Influence the speed of composite (laminating speed) 2)When the amount of glue is large, part of the foam is coated with the film, and the foam enters the baking channel before leveling after bursting, or enters the baking channel before bursting, and then dries and breaks to form empty points. After composite, the phenomenon like fisheye and pinhole is generated. 3)It is easy to produce glue crusts in the glue tray. In the way of dealing with more foam, the common way is to add defoaming agent, but we must pay attention to the type, quantity and stirring method of adding defoaming agent. If the operation is improper, it is easy to cause the phenomenon of fisheye and peeling force decline. Fifteen. paperhanging Simply speaking, pasting is the paper and paper bonded together, so that it has better strength and stiffness, such as cardboard boxes, corrugated boxes. The same kind of paper is called to mount, and there are all kinds of common hanging tags. At present, most pasting adhesives used for pasting have low solid content and contain more moisture. Because of the structure of the paper, there are a lot of capillary tubes in it. After pasting, due to capillary action, moisture is quickly absorbed by the paper and rises to the...