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First, non-solvent polyurethane adhesive food packaging composite membrane material dry-type composite processing, long since the use of organic solvents as the medium of polyurethane solvent-based adhesive. This kind of adhesive has strong adhesive force. High temperature resistance, resistance to cooking, cold resistance to freeze-resistant packaging, heat curing or room temperature curing, easy operation and so on. However, the use of a solvent-based adhesive may leave a non-volatile solvent...
Effect of Distribution Ratio of Table A and B on Adhesive Strength* A component: B component (mass fraction) 100:5 100:10 100:30 100:50 100:70 100:100 Shear strength, MPa 6.2 7.4 11.7 12.3 12.4 13.7 * The adhesive material is aluminum-aluminum alloy. Adding a certain amount of filler to the adhesive can increase the hardness and heat resistance of the adhesive layer, and can also reduce the cost of the adhesive. The amount of filler added is generally 10% to 20% (parts by mass). It is required...
Food packaging is divided into ordinary packaging and high-performance packaging. The corresponding polyurethane adhesives can be divided into four categories: (1) general use, (2) boiling, (3) transparent cooking, and (4) aluminum foil cooking. Composite film polyurethane adhesive for general packaging generally include dry food packaging adhesives and plastic food packaging adhesives that resist 70 to 100° C. boiling sterilization. Usually such adhesives are two-component solvent-based...
In the past five years, the demand for polyurethane in Japan has hovered over 600,000 tons. Soft foam based mainly on cars, beddings, and furniture keeps a low profile. As the cold storage production shifts overseas, the domestic production volume is reduced, and in addition, the residential buildings are in a state of slump, and the demand for rigid foam plastics continues to decrease. Therefore, in recent years, the polyurethane industry has decided to transfer its strategic non-foam products...
Polyurethane adhesive refers to an adhesive containing a urethane group (-NHCOO-) or an isocyanate group (-NCO) in the molecular chain. It has excellent performance and should be widely used. According to Gunter Festel, a polyurethane adhesive specialist at Bayer in Germany, the diversity of polyurethane adhesives is almost a solution to every bonding problem. Polyurethane adhesives are classified into two major categories: polyisocyanates and polyurethanes. They contain highly polar, highly...
1 Introduction Polyurethane is known for its excellent low-temperature flexibility, high elongation at break, high peel strength and wear resistance, and adaptability to various substrates. It develops rapidly, with an average annual growth rate of about 3% or more. . According to the data released by London IAL Consulting, in 2000 the global production of polyurethane adhesives exceeded 525,000 t [1].2. Development trend Under the driving force of environmental protection, health and safety,...
Polyurethane structural adhesive The definition of structural adhesives refers to adhesives that are used in the bonding of force structural parts and can withstand large dynamic loads, static loads, and long-term use. In layman's terms, structural adhesives are structural components that replace metal, plastic, glass, wood, etc. in the form of bolts, rivets, or welds, and are adhesives that can withstand heavy loads over a long period of time and can still be trusted. People have already...
Soft packaging, also known as soft cans, is a unique combination of lightweight, easy-to-use, long shelf life, hygiene, easy storage and transportation, easy disassembly, low waste, and good shelf life. It has now surpassed hard packaging such as plastics and glass bottles. Cans and other polyurethane adhesive due to its excellent performance, can be different film materials bonded together to get cold, oil, drug resistance, transparency, wear resistance and other properties of flexible...
Advantages: * Good adhesion to porous base surfaces * Good performance in stretch joints (stretch tension) Behavior in movement joints (stress relaxation) * Can be used for natural stone * Little dirt pick up * Stable quality standard Defined standard * High tear resistance * Resistant solvent, gasoline, etc. Resistance to solvents / gasoline etc. * Surface curing time is faster Skinning time * Easy to repair Easy to repair Disadvantages: * Opaque No transparent * Not applicable to structural...
Polyurethane adhesive refers to an adhesive containing a urethane group (-NHCOO-) or an isocyanate group (-NCO) in the molecular chain. It has excellent performance and should be widely used. According to Gunter Festel, a polyurethane adhesive specialist at Bayer in Germany, the diversity of polyurethane adhesives is almost a solution to every bonding problem. Polyurethane adhesives are classified into two major categories: polyisocyanates and polyurethanes. They contain highly polar, highly...
With the development of the food industry, flexible packaging has become more and more important. The quality of flexible packaging is closely related to the adhesive used, and polyurethane adhesives, due to their excellent properties, can be used for flexible packaging materials with various properties such as cold resistance, oil resistance, drug resistance, transparency, and abrasion resistance. Therefore, it plays an important role in adhesives for flexible packaging. The status....
What is a waste solvent? The waste solvent is the solvent that has been used, or some solvent that is not reacted at the time of the chemical reaction. In industrial production activities, some factories after repeated use of several cleaning agents will be mixed with a large number of impurities in the cleaning agent poured. This old way to deal with waste thinners is neither economic nor environmentally friendly. The mixed with impurities cleaning agent can also be processed again for...
Waterborne polyurethane adhesive refers to the adhesive formed when polyurethane is dissolved in water or dispersed in water. In practical applications, waterborne polyurethanes are mostly based on polyurethane emulsions or dispersions, and the aqueous solution type is less. In Europe, the earliest research and development of polyurethane water dispersion system, after the 70's formed several more mature preparation methods, such as acetone, prepolymer dispersion, melt dispersion method,...
Polyurethane adhesive is an important product category in the synthetic adhesive industry and new polyurethane material industry, and is widely used in various fields of the national economy. In the last two years, the production scale and technology of polyurethane adhesives in China have developed rapidly, mainly in the following areas: Continuous bulk polyurethane resins for footwear Solid polyurethane adhesives for domestic footwear manufacturing There are more than 100 manufacturers in...
Water-based inks are listed as the first choice for environmentally friendly printing. Room temperature crosslinked waterborne polyurethane adhesives can be used to prepare single-component polyurethane water-based inks suitable for gravure printing. The water-based inks have high light and water resistance, strong adhesion, adjustable dryness, vivid colors, clear layers, non-toxic, non-flammable, and weatherproof. Sticky and easy to control, compared with other water-based inks, has a wide...
Solvents are the most important auxiliary materials in the gravure printing of plastic packaging films. Intaglio printing inks use the lowest viscosity and the fastest drying speed in all kinds of printing, which is mainly determined by the properties of solvents. Solvents use it as a liquid to suit printing needs. The main component of gravure printing ink is solid, which accounts for 50%-70% of the ink composition and cannot be directly used for printing. The solvent not only adjusts the...
Polyurethane adhesive refers to an adhesive containing a urethane group (-NHCOO-) or an isocyanate group (-NCO) in the molecular chain. Polyurethane adhesives are an important part of polyurethane resins that are currently developing rapidly. They have excellent properties and have been widely used in many fields. They are one of the eight major synthetic adhesives. The diversity of polyurethane adhesives provides a solution to many bonding problems, and is particularly applicable to places...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.