Pressure sensitive insulation, materials furnished in roll or sheet form with liner, which can be later printed, frequently die cut, and intended for use as labels.

The ability of tape to prevent the flow of electrical current across its surface, usually measured on the backing.

The ability of a tape to resist sudden impacts, pulls, or shocks as may be sometimes encountered by packages in transit.

A tendency of some materials to readily absorb moisture from the atmosphere.

The moisture content of the air.   

Actual humidity is the number of grams of moisture in the air at any given time.  Relative humidity is the percent of moisture relative to the maximum that air at any given temperature can retain without precipitation.  

A pressure sensitive adhesive, applied to the backing in hot liquid form, which then cools to form a conventional pressure sensitive adhesive.

The ability of a tape to resist static forces applied in the same plane as the backing.   

Usually expressed in a time required for a given weight and length of tape to shear free from a vertical panel.

A term referring to the process of unwinding or dispensing of tapes at a relatively high rate of speed, usually over 15 meters/minute.

An adhesive film intended to be reactivated by the application of physical or chemical changes caused by exposure to high temperatures.

A light reflectioni characteristic of tape backings, usually expressed by such terms as glossy, low-gloss, matte, etc.

Openings between layers of tape within a finished roll.

Distortion of a roll of tape such that the layers no longer form a circle.

The ability of a tape to withstand exposure to flame.   Fireproof materials will not burn even when exposed to flame.   

A condition sometimes occurring during removal of masking tape in which flakes or particles of paint flake away from the tape backing.

Thin, longitudinal yarns or threads of glass, polyester, nylon, or other high-strength materials.

A weakness resulting from stress created by repeated flexing or impact force upon the adhesive-adhered interface.

When a tape pulls completely off from the surface to which it is applied and drops off.

Any paper, film, fabric, laminate, or foil material suitable for converting into pressure-sensitive material stock.   

The distance a tape will stretch in the machine or cross direction before breaking under controlled conditions, expressed as a percentage of original length.   Elongation is not necessarily an indication of conformability.

A measure of the tape's corrosive effect on an electrical conductor, particularly copper.   This is particularly important in the selection of tapes for electrical insulation.