Most carton sealing tapes use what we call ‘pressure-sensitive’ adhesive, meaning that the only agent required to adhere the tape to the carton is pressure. This adhesive stays tacky throughout its service life, never fully curing. If the carton is made from low-grade corrugated, isn’t totally flat or has space behind the tape seal, the adhesive will struggle to keep hold of the carton. Over time, or if exposed to extremes of temperature or moisture, the adhesive will lose its tackiness and the carton seal will no longer be secure.
In contrast, water activated adhesive becomes semi-liquid when moistened and soaks into the carton’s fibres, so that as it dries and cures it becomes an integral part of the cardboard. It is almost impossible to reactivate, requiring so much moisture to do so that the carton itself would be destroyed, and possibly its contents.
The benefits of this are threefold: less tape is needed to create a far superior, more permanent bond; permanently-taped seams add to overall carton strength and rigidity, so they are less likely to collapse when stacked; it is impossible to remove the tape without leaving some evidence, so the carton’s tamper-resistance is improved.
This is one of seven advantages of water-activated tape that we are highlighting in a series of blogs, which alone and in combination present a strong argument for changing from pressure-sensitive to water activated tape. Be sure to look out for them all and revisit previously-published blogs at southgate.eu.com/blogs.
Tegrabond® water activated tapes and dispensers are supplied by Southgate through their network of approved suppliers throughout the UK and across Europe.