At present, the popular edge sealing processes on the market are: EVA, PUR and laser edge sealing. In the traditional edge sealing industry, EVA hot melt adhesive products have long occupied the dominant position of edge sealing hot melt adhesive. With the consumer awakening of consumer demand for environmental protection, PUR has been favored by more enterprises with its beautiful appearance, good edge sealing effect, high cost performance and environmental protection.
Advantages of PUR edge banding process
The advantages of pur edge banding machine, the current mainstream edge banding machine there are three kinds of EVA edge banding machine, pru edge banding machine, laser edge banding machine, in fact, are related to "what glue is used to seal the edge", like the most traditional EVA edge banding is EVA glue to achieve bonding, PUR edge banding machine is PUR glue to achieve bonding, The laser edge banding machine uses the laser edge banding band with its own functional layer to achieve bonding under the action of the laser.
EVA glue is common on the market, EVA glue cost is low, the equipment and site requirements are low, but the amount of glue is large, about 160-230 units, the glue line is naturally thicker. EVA glue also has a problem is that its viscosity is reflected in the cooling and solidification after hot melt, which is equivalent to a physical bond, if it experiences high temperature (more than 70 degrees), it will melt again and become soft, losing the original viscosity.
The glue line of PUR edge banding machine is thinner, second only to laser edge banding: because the glue amount of PUR edge banding is only 80-110 units, which is more than 1 times less than EVA glue. Although the glue is less, because the cost of PUR glue is 3-4 times that of EVA glue, the overall cost is much higher. PUR edge sealing machine is more moisture-proof, we may have seen the plate in the water accidentally, the edge off the tragedy, especially in the bathroom bathroom such a high humidity place, it is to be careful, but PUR glue itself is cured by moisture reaction, do not worry about moisture invasion.
