Qingdao Sanrenxing Machinery company mainly do hot melt coating machine, different with water glue and solvent glue machine, hot melt adhesive coating machine more better for environment, energy consumption less.
Pressure adhesive is one adhesive that sensitive to pressure, and can be bonded to the adhesive with a slight amount of finger pressure, needn’t other solvent or assistant way. Hot melt PSA is the 3rd generator pressure adhesive product after solvent type and emulsion type pressure adhesive, it’s no solvent, friendly environment and safety manufacturing, could improve producing efficiency, producing cost less, so most countries are widely developing it now.
Hot melt PSA be used on label product, 100% solid, no solid waste any more in manufacturing, meet the environment request in the modern life. With the development of hot melt adhesive, many countries don’t use solvent glue anymore, change to use water glue or hot melt adhesive on adhesive label product.
Water glue on label product advantage is wide temperature range and flatness, but initial adhesion and peeling force not too high, bonding non-polar substances on the surface will lack sufficient adhesion. And hot melt pressure sensitive adhesive has very strong initial adhesion and peeling force, which can meet the bonding requirements of many different materials.
Water glue solid about 50%, compare with hot melt PSA, water glue qty will more, hot melt PSA less.
Hot melt pressure sensitive adhesive does not contain solvents such as water, so it does not need to be dried and naturally cooled to solidify during production, saving a lot of time, improving production efficiency, and reducing certain costs.
So compared to water-based and solvent glue, hot-melt pressure-sensitive adhesives have advantages such as stronger viscosity, environmental friendliness, non-toxic, no dry, small area occupation, fast production speed, and low cost. Therefore, hot-melt PSA are currently developing very rapidly in the label industry.
UV adhesive advantage
1. UV adhesive can bond transparent materials without any traces
Some industrial products are transparent, such as glass, crystal products, handicrafts, etc. If opaque adhesive is used for bonding these transparent products, their aesthetics may not be very good. The glue of UV glue is transparent, and after curing, the glue is also transparent, and no trace can be seen with the naked eye, resulting in excellent aesthetics.
2. The bonding strength of UV adhesive after curing is high
The bonding strength of UV adhesive after curing is similar to that of the original material, and even if dropped on the ground, it is not easy to crack from the bonding point.
3. UV glue is safe, environmentally friendly, and pollution-free
Nowadays, many adhesives are solvent based and release some toxic gases before and after curing. UV adhesive is currently recognized as a safe, environmentally friendly, and pollution-free adhesive product worldwide, with no harmful substances released before and after curing.
4. The bonding process of UV adhesive is simple and convenient
The curing of UV adhesive is completed under the irradiation of ultraviolet lamps (UV lamps). So, during the adhesive application process, if there is no ultraviolet radiation, it will not solidify. Therefore, cleaning or adjusting the adhesive position is very easy, and the adhesive application can also be completed through a three-axis adhesive dispenser, which is convenient, simple, and fast.
The curing speed is fast, and can be completed in a few seconds to tens of seconds, which is beneficial for automated production lines, improving labor productivity, and can be tested and transported after curing, saving space. It can be cured at room temperature, saving energy, and can be used for materials that are not suitable for high-temperature curing. Compared to heat cured resins, UV curing consumes 90% less energy. The curing equipment is simple and only requires lighting fixtures or conveyor belts, saving space.
Post time: Aug-19-2023