What factors should be considered when choosing hot melt adhesive？

Working time: Fast working is the main feature of hot melt glue sticks. Improve work efficiency and reduce labor costs. The working time of the hot melt adhesive strip is generally about 15 seconds, and the working time of the production line, the hot melt adhesive strip is getting shorter and shorter.

 

Appearance treatment of the extrudate: Hot melt glue sticks are not as harsh as other surfaces of the adhesive, but the dust and oil on the surface of the adhesive should be properly handled so that the hot melt adhesive will maintain a good bonding effect.

 

Temperature resistance: Hot melt adhesives are sensitive to temperature contrast. When the temperature reaches a certain level, the hot melt rod begins to soften, and when the temperature is lower than a certain temperature, the hot melt rod becomes brittle. Therefore, when selecting a hot melt rod, the temperature change of the commodity location environment must be fully considered.

 

Color: Due to the different colors of the attachments, the color requirements for the hot melt rod should be different. If the attachment itself has no special color requirements, it is generally better to introduce a yellow hot melt stick than a white stick.

 

Hot melt glue sticks and adherends can be stabilized as long as the pre-adhesive and post-adhesive properties are combined. In the coating process of the hot melt glue stick, the heating and dissolving time and temperature should be controlled first to ensure that the colloid itself will not be damaged, and then to ensure that it has anti-oxidation, anti-acid and anti-alkali. plasticity. The material of the pressed material is different, and the viscosity of the hot melt glue stick is also different.