For makeup brushes, the most two common glues are hot melt glue and AB glue.
Hot melt glue is to insert the glue rod into electrical glue gun, and after electrified, the glue rod will melt, then workers insert the handle into ferrule to finish the assembly. The hot melt glue will quickly dry in several seconds and are easier for workers to do brush assembly. If handle falls off from ferrule after certain period, users just use lighter to bake the bottom ferrule where connects handles for several seconds. Then the original glue melt, users can insert the handle into ferrule to do the assemble again. It is very easy and every one can do it, the only thing is to be careful in case of hurt by hot ferrule.
The glue rod has quality level, good glue rods are very strong, so brush heads seldom fall off from brush handles, while bad glue rods are weak in stickiness, so brush heads may apart from handles after some period. Of course, the price of different quality glue rods is different, for big brands like Loreal, they will clearly specify that they need imported good quality glue rods.
AB glue is a kind of fragile glue and very strong which is seldom fall off. But it is more difficult to assemble makeup brushes with AB glue as it is fluid. If the workers are not professional enough, the handle may slant and cannot well connect the ferrule. Also, AB glue need much longer time to dry up. The hot melt glue only needs several seconds to dry up while AB glue needs more than 4 hours.
Now few Chinese makeup brush manufacturers use AB glue on makeup brushes unless upon customers’ requirements.
In conclusion, the Hot melt glue VS AB glue is as following:
2. Hot melt glue is easier to do assembly;
3. Hot melt glue can dry in seconds while AB glue needs more than 4 hours
4. Hot melt glue is easier for users to do rework If brush heads unfortunately apart from handles; while with AB glue, users have to buy new AB glue, otherwise the brushes will be useless.
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