Advantages And Disadvantages Of Utilizing Hot Melt Glue

The advantages of hot melt adhesives are primarily manifested in the following points:

1 Quick curing speed, good bonding strength and flexibility.

Hot melt adhesives can cure and bond within a number of tenths of a second to a couple seconds, and have the traits of melting when heated, and bonding when cold. This enables packers to use hot melt adhesives to make use of higher-speed production lines, and enhance production while reducing defective products, which is convenient for continuous and automated high-speed operations, and has a lower cost.

2 The ability of hot melt adhesive is stable

It is not affected by changes in temperature and humidity from morning to nighttime in the working environment, which ensures the bonding fastness and eliminates the inherent adhesive peeling problem of packaging machinery.

3 Hot melt glue does not include water and every other fluxes

Its solids could be made into blocks, films, strips or pellets, which are easy to transport and store. It has a long service life, eliminates damage and waste, and is straightforward to use.

4 The hot melt adhesive doesn’t contain solvents and does not emit harmful and toxic fumes, will not be easy to burn or explode, is safe, and will not cause secondary air pollution to the environment and endanger human health.

5 The hot melt adhesive forms a glue layer that is immune to water and moisture, and might form a reliable glue even in a damp environment.

6 Hot melt adhesive could be repeatedly melted and bonded

If the hot melt adhesive coated on the adherend can’t be bonded on account of cooling and solidification, it may be reheated for bonding operation, so it is very suitable for bonding with some particular process requirements elements, such because the restoration of some cultural relics.

7 A wide range of bonding objects, both bonding and sealing, no drying process, easy bonding process, and good financial benefits.

8 Good gloss and gloss retention, glorious shielding.

In fact, hot melt adhesives even have some disadvantages, as described under:

1 There are limitations in performance, insufficient heat resistance, limited bonding power, and poor chemical resistance. Modification of the hot-melt adhesive base polymer can improve the heat resistance and strength of the hot-melt adhesive.

2 Coating by hand, the impact will not be good, and the waste of rubber is difficult to control. Subsequently, it is important to be equipped with special equipment to melt and apply glue, reminiscent of a hot melt gun, which is inconvenient to use and restricts its use and promotion.

3 Bonding is usually affected by local weather and seasons. Generally, the wettability is poor in winter, the curing becomes slower in summer, and the melting time is shortened when the wind is strong.

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