Reactive hot melt adhesives are heated and melted into a fluid under the condition of inhibiting chemical reactions for coating; after the two adherends are bonded and cooled, the adhesive layer condenses to play the role of bonding; afterwards, it uses the moisture in the air The air and moisture attached to the surface of the adherend react with it to extend the chain to produce a high-polymer polymer with high cohesion, which significantly improves the adhesion, heat resistance, and low temperature resistance. Its characteristics are as follows: Reactive hot melt adhesives are heated and melted into a fluid under the condition of inhibiting chemical reactions for coating; after the two adherends are bonded and cooled, the adhesive layer condenses to play the role of bonding; afterwards, it uses the moisture in the air The air and moisture attached to the surface of the adherend react with it to extend the chain to generate a high-cohesive polymer with high cohesion, which significantly improves adhesion, heat resistance, and low temperature resistance. Its characteristics are as follows:
(1) Solvent-free, one-component type. Unlike solvent-based adhesives that require a drying process, there is no environmental pollution and poisoning caused by solvents. The bonding process is simple and can be applied by roller coating or spraying and other sizing methods, which is suitable for various automated assembly lines.
(2) Glue can be applied at low temperature. The melting temperature of polyurethane reactive hot-melt adhesives is lower than that of general hot-melt adhesives (170-200℃), and it can be applied at low temperature and can be used at 120-150℃. It saves energy and reduces the corrosiveness of the gluing device, especially suitable for bonding heat-sensitive materials (such as plastics, etc.).
(3) Good operability. The two adherends can be fixed in a short time, so the assembly parts can be quickly transferred to the next processing procedure to improve work efficiency.
(4) Long pot life: the pot life at 150°C can reach 16h, and the pot life at 90°C is 3 days.
(5) Excellent heat resistance, cold resistance, water vapor resistance, chemical resistance and solvent resistance. Compared with the original hot melt adhesive, the listed properties are greatly improved due to the cross-linked structure of the reactive hot melt adhesive.
This platen single-tube PUR hot melt glue machine is composed of three parts: PUR hot melt glue machine, hot melt glue pipe, and manual glue gun. It is used for hot melt and spraying of PUR barrel glue, suitable for most occasions of glue bonding production process, and is widely used in product assembly in various industries such as printing, packaging, automobiles, clothing and shoes, electronics, furniture, etc. .
The most important difference between the water-based glue machine and the hot-melt glue machine is the lack of the glue melting process, which also saves the machine from working at high temperatures for a long time, and has low energy consumption. Generally, the water-based glue machine requires the temperature control of the machine to be around 45-55 degrees. Conducive to the constant flow and pressure of the glue. Because of its good flow performance, suitable viscosity, good water retention performance, it can completely and evenly infiltrate the surface of the adherend, strong adhesion, stable performance, not easy to delamination, gelation, decay, etc., and it is also suitable for the bonding of corrugated cardboard . The water-based glue machine is also more economical, convenient to operate, resistant to strong corrosion, and widely used; but the water-based glue machine is slightly toxic, unlike the hot melt glue machine so colorless, odorless, environmentally friendly, and non-toxic.
(1) Solvent-free, one-component type. Unlike solvent-based adhesives that require a drying process, there is no environmental pollution and poisoning caused by solvents. The bonding process is simple and can be applied by roller coating or spraying and other sizing methods, which is suitable for various automated assembly lines.
(2) Glue can be applied at low temperature. The melting temperature of polyurethane reactive hot-melt adhesives is lower than that of general hot-melt adhesives (170-200℃), and it can be applied at low temperature and can be used at 120-150℃. It saves energy and reduces the corrosiveness of the gluing device, especially suitable for bonding heat-sensitive materials (such as plastics, etc.).
(3) Good operability. The two adherends can be fixed in a short time, so the assembly parts can be quickly transferred to the next processing procedure to improve work efficiency.
(4) Long pot life: the pot life at 150°C can reach 16h, and the pot life at 90°C is 3 days.
(5) Excellent heat resistance, cold resistance, water vapor resistance, chemical resistance and solvent resistance. Compared with the original hot melt adhesive, the listed properties are greatly improved due to the cross-linked structure of the reactive hot melt adhesive.
This platen single-tube PUR hot melt glue machine is composed of three parts: PUR hot melt glue machine, hot melt glue pipe, and manual glue gun. It is used for hot melt and spraying of PUR barrel glue, suitable for most occasions of glue bonding production process, and is widely used in product assembly in various industries such as printing, packaging, automobiles, clothing and shoes, electronics, furniture, etc. .
The most important difference between the water-based glue machine and the hot-melt glue machine is the lack of the glue melting process, which also saves the machine from working at high temperatures for a long time, and has low energy consumption. Generally, the water-based glue machine requires the temperature control of the machine to be around 45-55 degrees. Conducive to the constant flow and pressure of the glue. Because of its good flow performance, suitable viscosity, good water retention performance, it can completely and evenly infiltrate the surface of the adherend, strong adhesion, stable performance, not easy to delamination, gelation, decay, etc., and it is also suitable for the bonding of corrugated cardboard . The water-based glue machine is also more economical, convenient to operate, resistant to strong corrosion, and widely used; but the water-based glue machine is slightly toxic, unlike the hot melt glue machine so colorless, odorless, environmentally friendly, and non-toxic.
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