When using sealing tape, many people ask, "What is the tackiness of sealing tape?" and "How does it help in choosing sealing tape?" Let's discuss what tackiness is.
Tackiness refers to the holding power of sealing tape after it has adhered to cartons and other products. Initial tack refers to the tackiness of the roll material by hand or the tackiness of the overlap during application, generally reflected in physical properties such as shear strength and peel strength. The quality of tackiness directly affects the safety of the product during warehousing, long-distance and short-distance transportation! Some buyers may think that since their products don't require long-distance transportation or long-term storage in warehouses, tackiness is not important; as long as the initial tack is good, it's usable once glued on! Does this mean that tackiness is not important in this situation? Actually, no.
Good initial tack on packing tape generally has a higher water content in the adhesive. Its principle is similar to two pieces of paper soaked in water; they will stick together initially, but as the water evaporates, the two pieces of paper will separate back into their original state.
Good holding power on packing tape is generally a composite of adhesives with lower water content or higher oil content. It's like making glutinous rice paste; a very thick paste, while not as sticky to the touch as a diluted paste, will stick longer after being used to stick couplets. This is holding power—it withstands wind and external forces.
Understanding the holding power and initial tack of packing tape makes choosing the right tape easier and saves time.
