GLOSSARY - continued

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D DELAMINATION - A separation or splitting of the tape such as separation of the backing into two distinct layers, separation between laminations of a tape consisting of more than one and backing, or the separation between filaments and backing of a filaments reinforced tape. DIELECTRIC STRENGTH - The voltage which a tape will withstand without allowing passage passage of the current through it. DOUBLE-COATED - The adhesive is applied on both sides of the backing, which serves principally as a carrier for the adhesive. E ELASTIC MEMORY - A tendency of some tape backings to attempt to return to their original length after being elongated. ELECTROLYTIC CORROSION FACTOR - A measure of the tape’s corrosive effect on a metal conductor. This is particularly important in selection of tapes for use as electrical insulation. ELONGATION (Stretch, ultimate elongation) – The distance a tape will stretch lengthwise before breaking, expressed as a percentage of original length. Elongation is not necessarily an indication of conformability. F FEATHERING - A jagged, irregular paint line frequently characterized by small “feathers” of top-coat projecting into the masked area. FILM - Uniform homogenous, non-fibrous synthetic webs. FISHEYES - Relatively small deformations (pock-marks) in the adhesive caused by the entrapment of air between layers in the roll, it is not an indication of quality defect. FLAKING - A condition sometimes occurring during removal of masking tape in which flakes or particles of paint break off the tape backing. FLATBACK - Smooth paper backing. FLUOROCARBON FILMS - A film with very high and low temperature limits, excellent electrical characteristics, and a very slippery, non-sticking surface. FLUTING - Distortion of a roll of tape such that layers no longer from a circle. FOAM - A soft cushiony material formed by creating bubbles in base materials, such as natural or synthetic rubbers, or other elastomeric materials. G GAPPING - Openings between layers of tape within a roll. H HEAT RESISTANCE - The ability of a tape to withstand exposure to specified temperatures after application to a surface. Clean removal after exposure may or may not be important depending on the intended function of the type of adhesive. HIGH SPEED UNWIND - The ability of a tape to withstand exposure to specified temperatures after application to a surface. Clean removal after exposure may or may not be important depending on the intended function of the tape and the type of adhesive. HOLDING POWER (Sheer adhesion) – The ability of a tape to resist the static forces applied in the same plane as the backing. Usually expressed in time required for a given weight to cause a given amount of tape to come loose from a vertical panel. I IMPACT RESISTANCE (Shock resistance) – The ability of a tape to resist sudden pull or Shocks as may some times be encountered by packages in transit.