There are several adhesive tape types that are used in packaging. Let’s see what and their main features:
Adhesive Tape Types
First, it is a low-cost thermoplastic hot melt adhesive (hence its name). Its main characteristic compared to other glues is its fast adhesion, it is almost immediate, but its durability is inferior. This adhesive, also, we only find it in the polypropylene (PP) adhesive tapes.
Second, they are easy to identify them. Pick up your duct tape and check that when unrolling it makes noise, if so, unroll a piece and glue it to itself. If it breaks, you are in front of a hotmelt tape.
Acrylic glue is a synthetic polymer inside the thermoplastic resins. The main feature is the time it takes to adhere. This period is very long compared to the hotmelt. In return and to its favour, it offers a great adhesion and durability in average temperatures.
Also, you can add a process that silences the tape when unrolling, so we can also find them in no noise or little noise. If we have an adhesive tape with acrylic adhesive and low noise, we will know it when we unwind it. Hence, it does not make noise. Then we re-stick it in the same roll and, when unrolling again, it makes noise. This effect happens because the second unwind has lost the silent property. In the case of no noise tape, we must carry out the binding and unwinding process several times to lose this property.
How to know the difference?
To find out if you are using acrylic adhesive tape, peel a piece of adhesive tape on natural kraft paper (either in sheets or a kraft carton). If you can easily peel it off, the tape is acrylic. Polypropylene adhesive tapes contain this type of glue. Regarding solvents, this kind of adhesive is composed of elastomeric polymers that can be derived.