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ADHESIVE AND PERFORMANCE
Adhesive and Performance Tape Vibac Vi- Guide

 

 

Adhesive
Typical adhesives are natural rubber, synthetic rubber or acrylic (Vibac is offering all these types of glue).

Adhesion
Adhesion is the attracting force between the adhesive and the substrate, which depends on the adhesive, the substrate and the application conditions such as: application pressure, time period of pressure, and temperature during application.

Cohesion
Cohesion describes the inner strength of an adhesive. It is relevant for applications where the force, in effect, is parallel to the bonding area. High cohesion goes hand-inhand with high temperature resistance, low-edge picking, and high holding power or shear resistance.

Conformability
The tape's ability to fit snugly or make essentially complete contact with the surface of an irregular object without creasing or folding.

Elongation
Elongation is the percentage of which a tape can be stretched prior to breaking.

Moisture Resistance
Water resistance is tape's ability to keep its performances when in occasional contact with water or moisture for a limited period of time.

Pressure-Sensitive
A term commonly used to designate a distinct category of adhesive tapes and adhesives, which are aggressively and permanently tacky at room temperature and firmly adhere to a variety of dissimilar surfaces upon mere contact without the need of more than finger or hand pressure.

Pressure-Sensitive Tape
The combination of pressure-sensitive adhesive with a backing.

Peel Adhesion
The force per unit width, expressed in oz/in width, required to break the bond between a tape and a surface when peeled back at a standard rate and condition.


Shear
Shear is the ability of an adhesive to resist creep or slippage.

UV Resistance
UV resistance is the ability of a tape to maintain its performances when irradiated with UV rays or under direct sunlight

Tack
Tack, instantaneous surface adhesion, is the wetting capability of an adhesive to the substrate at first contact. Tack is effective under minimum pressure and for a short period of contact time. For most applications, tack is not relevant because time is required to press the tape to the substrate. For applications such as flying splices in the paper and print industry, tack is an important criterion. Tack also supports adhesion on rough surfaces. The thumb test is often used to characterize an adhesive, even though it gives no indication of the adhesion or the overall tape performance.

Temperature Resistance
Temperature resistance measures the max temperature a tape can withstand without losing its ability to perform. Temperature resistance is often associated at the period of time that the tape can resist at the defined temperature.

Tensile Strength
Tensile strength is mainly important for single-sided tapes where the backing for the particular application has to withstand tensile stress. Carton sealing tapes or strapping/bundling applications are most important. The tensile strength of tape is not usually important for double-sided tapes, as long as the bonding materials are not stretchable.

Waterproof
Waterproof is the ability of a tape to keep its performances when in direct contact with water for a specific period of time.


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