Express Bag Sealing Hot Melt Pressure Sensitive Adhesive

             What is the use method of express bag Hot Melt Adhesive?

With the continuous growth of online shopping transactions, not only the Internet industry has been developed, but also the express delivery industry such as: SF Express, ZTO, EMS, Deppon, STO, YTO, Yunda and other express companies have also grown rapidly. Due to the continuous growth of the number of express deliveries, the use of express bags as packaging consumables is very large.

First, the use of Hot Melt adhesive in the express bag industry
In the production of express bags, the Hot Melt Glue used is glued with a Hot Melt Glue Machine, and because of the different gluing methods, the express bag hot melt glue machine used is divided into spray glue hot melt glue machine and scrape glue hot melt glue machine. The following is a brief introduction of a certain brand of hot melt glue machine, so that you have a preliminary understanding and reference.
1. The surface of the rubber box layer is coated to prevent carbonization, ensure the best gum and reduce blockage;
2, gear pump adopts frequency conversion speed regulation, precise control of rubber output;
3, precision filter device to remove impurities, prevent nozzle blockage;
4, the temperature adopts accurate PID intelligent segmented control;
5, the control system has a high and low temperature protection function to prevent damage to the Equipment.

Tear off the release paper (wrapping paper) of the Pressure Sensitive Adhesive block, put it into the glue pot of the hot melt adhesive machine, heat it to 140℃-160℃, when the pressure sensitive adhesive is liquid, it is transmitted through the hose of the hot melt adhesive machine, and spray glue with the hot melt adhesive machine scraper to the release film and the express bag, and the glue is automatically transferred to the express bag. This completes the coating process.

Second, express packaging industry hot melt adhesive selection standards:
1, bag sealing Binding Agent, must be stable performance, with good low temperature initial viscosity, strong initial stripping strength and good high temperature resistance. Express bag sealing adhesive has high requirements on high temperature and low temperature resistance, because the application of hot melt adhesive in express bag sealing is also divided into summer glue and winter glue. Hot melt adhesives will have different effects at higher temperatures and lower temperatures. The most common effect is the viscosity of the glue. Different hot melt adhesives should be used according to different climates. The summer temperature is relatively high, if the use of general glue, it will be easy to have glue and oil, or it will be easy to de glue in the case of low temperature in winter.

2, in the selection of hot melt adhesive should pay attention to the color of the glue, in general, if there is no special requirements, yellow hot melt adhesive is better than white adhesive. Secondly, although the hot melt adhesive is not so strict on the surface treatment, it is necessary to do appropriate treatment for dust and oil, so that the hot melt adhesive can play the best role.