What is the glue used for PU polyurethane rubber rollers

For those with low requirements for the bonding strength of PU rubber rollers, Chemlock's 218 is the most common, followed by Rohm & Haas's 422 (**cheap), or Chemlock 213 and 219, but the performance is not very stable. If it is a metal that is difficult to stick (stainless steel with a smooth surface, metal with coating, etc.) or nylon rubber roller, most rubber roller factories use Chemlock 205 as a base, 205 has a good bonding effect on iron, stainless steel, nylon, and some electroplated metals (printer rubber roller), and it is not sticky to brass, and the effect of sticking aluminum is not very good, and P-11 has a good effect of sticking aluminum but is not resistant to high temperature. It is recommended to choose C&C 88 from Germany or 48 from Xibang in the United Kingdom, which are relatively stable in the market and suitable for the pouring process of TDI, NDI and MDI prepolymers, as well as the injection molding process of TPU PU.

The substrates include metals, plastics, fabrics and ropes. It is particularly suitable for applications with dynamic requirements for hydrolysis resistance.

If there is a higher requirement for bonding strength, you can use German C&C 3161 and British Xibang 49, but the process requirements are also higher, C&C 3161 requires a pre-curing temperature of 180 degrees for 5 minutes; Sibang 49 is red in color, and the pre-curing requirement is 120 degrees for 2 hours. It can be used for papermaking rubber rollers, textile rubber rollers, and polyurethane rollers for centrifugal casting; solid tires; Casters; pipe lining; Conveyor belts.

1. The simplest is to put it on the lighter, and dock it immediately after heating and melting.

2. On the flat soldering iron, the two ends are docked immediately after melting.

3. If the batch and requirements are high, buy the docking machine, hundreds of yuan.

Summary. The polyurethane rubber roller lagging formula roughens the surface of the rubber roller core to increase the adhesion area between the rubber roller core surface and the lagging adhesive.

The polyurethane rubber roller lagging formula roughens the surface of the rubber roller core to increase the adhesion area between the rubber roller core surface and the lagging adhesive.

Sandblasting treatment: The roughly treated rubber roller core is sandblasted, and the sandblasting will select sand with different properties according to the material of the rubber roller core. The sandblasting is to make the surface of the rubber roller rougher, and the glue and the core are better bonded after the glue.

4.Lagging of rubber roller cores after the above treatment is carried out according to the requirements of customers.

Polyurethane can be used as a sliding door, pulley and other small parts, precision instruments, polyurethane rubber rollers.

Generally, it is used in the coating machine, the precision is high and low, and the general good export products should be controlled between 2-5 filaments.

Let's talk about the advantages of polyurethane High strength, high wear resistance, high oil resistance (this is not possible with general natural rubber, but generally toluene is more used as a mixture, because toluene is cheap)!

If the hardness is not as hard as we are now, we can do it at 15-95 degrees!

If your requirements are not very high, it is better to replace other rubber with others, **poor.

Metallurgy, printing will use polyurethane rubber rollers, and many industrial machinery will also use polyurethane rubber rollers.

In industry, polyurethane has a wide range of uses.

I know that Kemai rubber roller factory is specialized in polyurethane rubber rollers.

Polyurethane for polyurethane rubber rollers:The polyurethane used must have sufficient surface viscosity, because this can ensure that the roller has good ink transfer and inking performance during the printing process, and its good ink philophilic performance can ensure high-quality printing.

The appearance is bright in color, the colloidal surface is fine and smooth, and the colloidal material and mandrel are firmly bonded. The size of the rubber roller is strictly controlled, and the size will not change greatly under different temperature and humidity conditions. It can adapt to the high temperature and high humidity environment of the southern printing workshop and the cold and dry climate conditions of the north.

Polyurethane rubber rollers have good chemical properties and are suitable for various types of inks and printing methods. It has special resistance to solvent components in various inks, dampening solutions, and cleaning agents. Polyurethane rubber rollers are also suitable for UV ink rubber rollers and varnish oil rubber rollers, especially for boiling water, diesel, gasoline, lubricating oil, kerosene, toluene, alcohol and salt water solutions have good solvent resistance.

However, it is not resistant to acetone, ethyl acetate and strong acids and bases.

China's polyurethane industry ranks first in the world.

A few days ago, the "2013 Polyurethane Elastomer Annual Meeting" of the Elastomer Professional Committee of China Polyurethane Industry Association was held in Xining Hotel, Xining City, Qinghai Province. Zhu Changchun, Secretary-General of China Polyurethane Industry Association, said: "In 2012, affected by the global financial turmoil, the chemical industry experienced a severe test, with a significant slowdown in economic growth and a significant decline in economic efficiency.

However, the polyurethane industry still maintained a good growth rate and showed a steady growth trend. According to the statistics of the secretariat of the association, except for some raw material products affected by the rapid expansion of production capacity, the growth rate of most products exceeded 10%. In 2012, the national polyurethane production and sales reached 7.8 million tons, including 3.2 million tons of polyurethane foam, 350,000 tons of spandex, 1.95 million tons of polyurethane synthetic leather slurry and sole stock solution, 1.3 million tons of polyurethane coatings, 400,000 tons of polyurethane adhesives and sealants, and 600,000 tons of polyurethane elastomers, an increase over 2011, of which the growth rate of polyurethane elastomers exceeded 20%.

By the end of 2012, the production and sales of polyurethane accounted for more than 40% of the world's total output, ranking first in the world.

The purpose of maintaining the rubber roller is to maintain stable mechanical properties, chemical properties and printability, and prolong the service life.

1. The rubber roller should be stored in a cool, dry and ventilated place, and in a vertical or horizontal state.

2. When stored horizontally, it should be placed on the shelf, and it is strictly forbidden to stack and squeeze the glue surface with each other to prevent the glue surface from being deformed and adhered to under pressure.

3. Avoid storing it with acids, alkalis, oils and sharp and hard substances, etc., so as not to corrode and damage the rubber roller.

4. After the rubber roller is stored for 2 to 3 months, it should be changed to prevent bending and deformation in one direction for a long time, and pay attention to prevent rust in the shaft head.

5. It is necessary to make spare rubber rollers, but it should not be used for too long, because the spare rubber rollers will naturally age and occupy funds. It should prevent the occurrence of aging of the adhesive layer, wrinkles, and corrosion of the shaft head caused by storage for too long.

Rubber rollers are mainly used in papermaking, printing and dyeing, printing, grain processing, metallurgy, plastic processing, etc.

Rubber roller is a roll-shaped product made of metal or other materials as the core and vulcanized rubber on the outside. The rubber roller is generally composed of an outer layer of rubber, a hard rubber layer, a metal core, a roll neck and a vent, and its processing includes roller core sandblasting, adhesive treatment, glue molding, cloth wrapping, wire winding, vulcanization of vulcanization tank and surface treatment.

Natural rubber rollers. Excellent elasticity and mechanical strength, good alkali resistance, used in textile, papermaking, leather, packaging and other equipment in the press-fit rubber roller and metallurgy, mining and other industries traction type rubber roller.

Nitrile rubber rollers. Excellent oil resistance, and wear resistance, aging resistance, heat resistance is also good, used in printing, printing and dyeing, chemical fiber, papermaking, packaging, plastic processing and other equipment and other occasions in contact with oil and hydrocarbon solvents.

Neoprene rollers. Excellent wear resistance, high fire resistance, aging resistance, good heat resistance, oil resistance and acid and alkali resistance, used in printed board corrosion machine, plastic, tanning, printing, food printing iron, ordinary coating machine and other equipment.

Butyl rubber rollers. High chemical solvent resistance, good heat resistance (170), excellent acid and alkali resistance, suitable for color printing machinery, tanning machinery, coating equipment, etc.

Ethylene propylene rubber rollers. Excellent ozone aging resistance, weather resistance, wide use temperature, long-term work under 65 -140, excellent insulation performance, used in plastic printing machinery, leather machinery, general fields.

Polyurethane rubber rollers.

It has high mechanical strength, wear resistance, aging resistance and oil resistance, and is often used in papermaking, chemical fiber, wood processing, plastic processing and other machinery.

Silicone rubber rubber rollers.

With its high temperature resistance, ozone resistance, chemical inertness and non-adhesion to plastics, it is used for processing hot adhesive products, such as polyethylene calendering, embossing, printing and dyeing, film and fabric coating adhesives, plastic lamination, corona treatment and other machinery, and is also used as a release roller and non-woven fabric manufacturing on sugar production and packaging machines.

Viton rollers. It has high heat resistance, oil resistance, acid and alkali resistance, air permeability, electrical insulation, aging resistance, flame resistance, wear resistance and other properties, and is used in special coating equipment. Carbon fiber rollers.

Light weight, high strength and high temperature resistance. It is used in special industries such as wide films.