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BLADE SLITTER:
A slitting machine
that slices the backing of the tape with razor blades. This gives
a very smooth and strong edge that is difficult to tear by hand.
RELATIVE HUMIDITY:
Amount of moisture
in the atmosphere as a percentage of the maximum quantity of moisture
that the air can hold at that temperature.
REINFORCEMENT:
A material usually
sandwiched between the backing and the adhesive for added strength.
Non-woven materials. Paper tissues or synthetic films or fabrics
(e.g. Double-sided tapes). Filaments. Thin longitudinal threads
of glass, rayon, nylon or other materials for high strength (e.g.
Reinforced Bonding Tape).
RELEASE COATING:
A coating applied
to a tape backing to facilitate the unwinding of the tape. Release
coating and backsize are sometimes used interchangeable. Usually
referring to a thin coating applied to the backside of a film
or other impervious tape backing that allows the tape to be unwound
at a controlled level.
RELEASE LINER:
A backing coated on
one or both sides with a controlled amount of release agent. Frequently
used with label stocks or double-face tapes.
REMOVAL:
The act of pulling
tape away from the surface to which it has been applied.
RESIN:
Materials that impart
tackiness and pressure-sensitive adhesion to a rubber or resin
adhesive.
RESISTANCE TO WEATHER,
SOLVENTS, ACIDS, ALKALIES, OILS, GREASE, ETC.:
The ability of a tape
to resist exposure to such conditions after application and to
perform satisfactorily.
RESISTIVITY:
The specific resistance
of a material. Using standard dimensions the electrical resistance
offered by a section of material.
REVERSE ROLL COATER:
The most adaptable
web coating method, capable of coating a variety of substrates
with a wide range of adhesives and solutions.
REWIND MACHINES:
Units that rewind
substandard individual rolls of tape and salvage good portions.
REWOUND:
Referring to a roll
of tape that has been re-rolled to remove defects.
ROLL-AGEING RESISTANCE:
see Storage Stability
ROLL DEFORMATION:
Used as general terms
to describe any physical change from the shape and proportions
or a perfect roll of tape. Examples below:
Buckling:
Deformation
whereupon bumps appear along the circumference of the
roll.
Fluting:
Term used
to indicate Gearing or Spoking
Gearing:
Succession
of humps appearing regularly along the circumference of
the roll, the spacing between the humps that gives the
appearance of a gear.
Roll Opening:
(Also called
Gapping) Two layers that become separated from one another
creating an opening.
Spoking:
Deformation occurring when in the appearance of the tape
lines radiate from the center to the circumference. Resembling
a spoked wheel.
Telescoping:
Layers of tape slide across each other in the direction.
This movement is similar to the lengthening of a telescope.
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ROLL HARDNESS:
A value that reflects
the proper winding of individual rolls of tape. It is measured
by the relative hardness of wind.
ROPE PAPER:
Paper formerly made
from reclaimed rope fibers. The decreasing used of hemp rope has
created a shortage of used rope. Therefore virgin hemp fiber is
being used.
RUBBER:
A long chain polymer,
synthetic or natural, having properties of elasticity, resilience
and recovery.
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