Hot melt glue machine with hand gun

Application of hot melt glue machine in carton packaging

October 20 , 2022

As a new type of carton packaging and sealing, hot melt adhesive sealing has partially replaced the traditional bundled packaging and tape packaging, and is used in the carton outer packaging of various foods and the carton of wine, dairy and other products. on the outer packaging. Due to the advantages of good packaging quality, beautiful appearance and low cost, the application of hot melt adhesive box sealing will become more and more extensive.

thermoplastic melters

adhesive spray glue guns

Advantages of Hot Melt Adhesive Sealing

Hot-melt adhesive sealing is to use a hot-melt machine to melt the hot-melt adhesive into a liquid, and then send it to the surface of the carton through the throat and spray gun of the hot-melt machine. After the hot-melt adhesive is cooled, the bonding is completed. It can meet various requirements of carton sealing, and overcome the defects existing in the traditional carton sealing form.

Good quality packaging

Shipping cartons must be able to withstand temperature, humidity changes, and rough handling, which is more difficult to meet with tape because of its poor bond strength, low tensile strength, and poor adhesion to coated or oil-based cardboard.

The hot melt adhesive has a good bonding force with wet materials, and has a strong penetration force. It plays a physical and chemical bonding effect between the corrugated paper and the lining board at the same time. The overall strength of the bonded carton is enhanced, and the carton is not easy to deform and crack. In addition, the hot melt adhesive application system can apply glue to key parts of various shapes, such as: carton inner flaps.

Secondly, the self-adhesive tape has poor low temperature resistance. In the cold climate of the north, it is easy to open the glue; the hot melt adhesive has good low temperature resistance and can withstand low temperature of -40 °C. In addition, the storage period of hot melt adhesive is as long as 2 years, the storage area is small, and there are no special storage requirements; while the storage period of the tape is only half a year, and certain storage conditions are also required, otherwise it is easy to deteriorate.

Hot melt adhesive also provides a great anti-theft feature, as the adhesive penetrates into the corrugation any attempt to open the carton will tear the fibers. The tape can be cut with a knife, unknowingly taking the contents and resealing it again.

Beautiful appearance

Today, merchants require packaging to convey product and company image through packaging pattern design while delivering goods. Therefore, the fewer factors that hinder the appearance, the better. Tape often obstructs the image and interferes with the transmission of packaging information; while hot-melt glue is used to bond between the flaps, which can provide a larger display space.

Cut costs

The sealing speed of hot melt adhesive is fast, and the whole bonding process can be completed in only 1 to 3 seconds. It is suitable for mass production, with low energy consumption and low cost.

If hot melt adhesive is used, adding glue during processing will not cause downtime; while replacing the tape requires downtime. In addition, the clapboard may not be installed in the box, and the sealing strength of the box is greater than that of the clapboard when the box is sealed with tape, which can reduce the cost of the clapboard.

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