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

1 Fast curing speed, good bonding power and flexibility.

Hot melt adhesives can remedy and bond within a number of tenths of a second to a few seconds, and have the characteristics of melting when heated, and bonding when cold. This enables packers to make use of hot melt adhesives to use higher-speed production lines, and improve production while reducing defective products, which is handy for steady and automatic high-speed operations, and has a lower cost.

2 The ability of hot melt adhesive is stable

It’s not affected by modifications in temperature and humidity from morning to night within the working environment, which ensures the bonding fastness and eliminates the inherent adhesive peeling problem of packaging machinery.

three Hot melt glue doesn’t contain water and every other fluxes

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

4 The hot melt adhesive does not comprise solvents and doesn’t emit dangerous and poisonous fumes, isn’t straightforward 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’s resistant to water and moisture, and may form a reliable glue even in a humid environment.

6 Hot melt adhesive can be repeatedly melted and bonded

If the hot melt adhesive coated on the adherend can’t be bonded as a consequence of cooling and solidification, it will be reheated for bonding operation, so it is especially suitable for bonding with some special process requirements parts, such as the restoration of some cultural relics.

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

8 Good gloss and gloss retention, wonderful shielding.

Of course, hot melt adhesives also 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 effect shouldn’t be good, and the waste of rubber is difficult to control. Subsequently, it is critical to be equipped with particular 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 climate and seasons. Generally, the wettability is poor in winter, the curing becomes slower in summer season, and the melting time is shortened when the wind is strong.

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