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Laminated oil magnetic cards, Identification Card and other cards used in water-based adhesive. The card is both a document and a form or carrier of the document's existence, although it has entered the 5G era,Many things exist in electronic form, such as electronic balance cards, electronic driver's licenses, electronic health care cards, etc.But the physical card such as id card bank card is als...
Printing mucilage requirements The requirements of printing mucilage for manual plate printing Manual table printing is to press the screen on the fabric of the table for manual scraping, and the pressure extrusion on the scraper will print the glue through the mesh hole of the pattern part to the fabric. The shear stress of the binder is small, so thePrinting mucilageis required to have good...
With the development of The Times, many products in the production of nano coating, the coating can be very good protection from water and air substances invasion, the use of nano coating can obtain what characteristics, let us know about it. 1.Features The hardness of the coating is extremely high, which is more than 3 times that of tool and die steel, even more than 4000HV(ceramic characteristic...
Food packaging is divided into ordinary packaging and high-performance packaging, the corresponding waterborne polyurethane adhesive can be divided into four categories: general use, steaming boiling, transparent cooking, aluminum foil cooking.Usually such adhesives are two-component solvent-based polyurethane adhesives, the main agent is polyether or polyester polyol After the aromatic isocyanate...
When waterborne polyurethane is used as adhesive, it must be mixed generally. Based on waterborne polyurethane, crosslinking agent, thickening agent, filler, plasticizer, pigment and other additives can be added. Other types of waterborne resin and water can be added.In order to obtain higher resistance to water Heat resistance and bonding strength, at present a lot of waterborne polyurethane syst...
What is nano coating? What are the advantages? Nano paint is a new high-tech coating, is the nano raw materials and coating material, in addition to add silicon oxide single slurry nano technology emulsion nano technology pesticides fungicide and other modifiers.The metope paint with relative tradition not only lacquer face is meticulous and extraordinary, and price also is cost-effective.The meto...
Waterborne 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 adhesiv...
The most important application indexes of water-based adhesives in the packaging and printing industry mainly include four aspects: bonding strength, high/low temperature resistance, moisture resistance and viscosity holding.In practical application, defects such as weak adhesion and brittle degumming film are basically caused by the above four application indicators are not up to standard.In prac...
Water-based adhesives are environmentally friendly adhesives made of natural or synthetic macromolecule as adhesives and water as solvent or dispersant instead of toxic organic solvents that pollute the environment.Existing water-based adhesives are not 100% solvent-free and may contain limited vocs as additives for their aqueous media in order to control viscosity or fluidity.Advantages are mainl...
With the continuous enhancement of human awareness of environmental protection, environmental laws and regulations are constantly introduced and improved all industries are working together in the direction of environmental protection, green and health.With the development of flexible packaging industry, it has become an inevitable trend to reduce and remove organic solvents used in compounding.Wa...
Acrylic pressure sensitive adhesive is a large range, PUR is one of them, most of the acrylic pressure sensitive adhesive is heated operation, can be reheated after bonding, is reversible.And PUR is wet reaction acrylic pressure sensitive adhesive, heating operation, after bonding and moisture in the air reaction, after the reaction is irreversible (that is, heating will not melt). So PUR is more ...
◆ The procedure of bonding process:◆ The adhesive surface should be evenly coated to ensure infiltration, as far as possible to avoid bubbles, due to the porosity of the adhesive strength greatly reduced, resulting in degumming.Attention should be paid to the alignment of the position, not staggered, can be pressurized, air exclusion, make it close contact. Time is three important parameters of cu...
The chemical composition of glue, the polymer in the water environment glue (vinyl acetate in white glue is a kind of petroleum derivatives) are round particles, the radius of the general particle is between 0.5~5μm.The bonding of objects is achieved by the tension between the polymers in the glue.In the glue, water is the carrier of the polymer, and the water carries the polymer slowly into ...
Composition of pressure sensitive tape 1.Pressure sensitive adhesive, 2.substrate 3.Primer 4.Back treatment agent 5.Isolation paper The main components of the pressure sensitive adhesive and resin, including rubber such as polyacrylic acid ester or polyvinyl ether, homogeneous base material requirements, small scale and good to solvent invasive, including, (1) fabric such as cotton, glass cloth or...
Surface treatment of metal materials 1)metal material surface degreasing: organic solvent degreasing alkali degreasing electric degreasing ultrasonic degreasing 2)metal material surface derusting 3)Activation treatment of metal surface 4)Metal surface sandblasting treatment: increase the surface roughness Surface treatment of non-metallic materials 1)Mechanical treatment: sandpaper grinding, etc 2...
First, pour the glue on the flat glass to observe its rheology, and wiggle it to observe its rheology,If the flow of glue is too fast, it means that the glue is too thin and poor, and too thick is not conducive to bonding. Secondly, with a hand dip to observe its viscosity if you can slowly draw, a little sticky hand is better. Then, pour it on a small piece of glass to observe its film forming ti...
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