Carefully factor in the temperature. The tackiness of the adhesive tape is very temperature-dependent, and the colder the conditions, the weaker the bond will be. And on the flip side, extremely high temperatures can cause the adhesive to melt and lose its strength. If you must work at lower temperatures, then use a temperature-sensitive double-sided tape specifically designed for colder climates. Traces of dust, dirt, grease, and even the slightest hint of moisture before bonding will contaminate the adhesive surface and act as a barrier between the two.
To prevent tape failure, prepare the surface, give it a quick wash with rubbing alcohol and dry it with a clean cloth. Prolonged exposure to ultraviolet light can cause certain chemical materials such as natural and some synthetic rubbers as well as polyethylene to become hard and brittle.
Absolutely not the qualities you want in a tape that needs to hold for any duration in a particular application. If the area where you will be using the tape sees above-average UV exposure, you may need to consider a different tool for the job. For example, consider PVC: plasticized to provide flexibility, it is a lower-cost, lower-molecular weight material.
If a typical pressure-sensitive adhesive is applied to PVC and allowed to remain in place for a prolonged period, the plasticizer will migrate from the PVC surface into the pressure-sensitive adhesive; making the glue a gummy mess. When using this type of material, choose a high-quality, double-coated tape specifically designed for PVC applications.
This will considerably reduce any tendency to migrate, thereby preventing tape failure. The correct surface contact to weight ratio plays a factor. Not registered? Sign up here! Tape Shelf Life. How long can I store my adhesive tape product before the product has expired its shelf life? Accelerated aging is a procedure that utilizes elevated temperature as a way of exposing the tape or die cut part to stresses that will simulate real time aging in a compressed time frame.
Physical testing on the aged tape specimens peel, tack, shear, and liner release are performed after exposure and this data can be compared to room temperature control samples and real time aged samples to understand which properties might have been negatively affected by the accelerated aging conditions.
The stability of the physical properties can then be used as evidence to establish a shelf life. The last factor is determining shelf life is risk management. Risk management is where product managers, business leaders, and legal tend to get involved. They typically consult with the technical group to get a recommendation but they will decide how much risk they are willing to incur as a business and this will influence the stated shelf life.
Some companies are more risk averse than others and their shelf life statements often reflect this bias. There is little doubt that optimum storage conditions will maximize and even prolong in many cases shelf life. Tapes and die cut parts are stored in warehouses most of the time. Some of these warehouses are temperature and even humidity controlled.
Many of them are not.
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