Advantages And Disadvantages Of Using Hot Melt Glue
De Wikifliping
The advantages of hot melt adhesives are mainly manifested within the following points:
1 Quick curing speed, good bonding power and flexibility.
Hot melt adhesives can cure and bond within a couple of tenths of a second to some seconds, and have the characteristics 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 improve production while reducing faulty 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 adjustments 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 doesn't contain water and any other fluxes
Its solids can be made into blocks, films, strips or pellets, which are easy to transport and store. It has a protracted service life, eliminates damage and waste, and is simple to use.
four The hot melt adhesive doesn't include solvents and does not emit harmful and poisonous fumes, just isn't simple to burn or explode, is safe, and will not cause secondary pollution to the environment and endanger human health.
5 The hot melt adhesive forms a transparent glue sticks layer that's proof against water and moisture, and may form a reliable glue even in a damp environment.
6 Hot melt adhesive will be repeatedly melted and bonded
If the hot melt adhesive coated on the adherend cannot be bonded as a consequence of cooling and solidification, it could 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, each bonding and sealing, no drying process, easy bonding process, and good economic benefits.
8 Good gloss and gloss retention, wonderful shielding.
In fact, hot melt adhesives even have some disadvantages, as described under:
1 There are limitations in performance, inadequate heat resistance, limited bonding energy, and poor chemical resistance. Modification of the hot-melt adhesive base polymer can improve the heat resistance and power of the hot-melt adhesive.
2 Coating by hand, the impact shouldn't be good, and the waste of rubber is tough to control. Subsequently, it is important to be geared up with particular equipment to melt and apply glue, reminiscent of a hot melt gun, which is inconvenient to make use of and restricts its use and promotion.
3 Bonding is sometimes 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.
