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BACKING
Refers to the carrier sheet of material in a pressure sensitive
lamination as opposed to the face material. Usually has a release
coating applied so that the adhesive will not stick too tightly
to it. Also known as release liner, backing paper, carrier, etc.
BACK SPLITS
Linear cuts put in the liner during the coating process, or while
on press, to meet special application requirements.
BARCODE/BARCODE SYMBOL
A specific pattern made of lines (or bars) and spaces, of varying
width, which represent alpha or numeric data in machine-readable
form. The most general format for a barcode consists of: a lead
margin, a start character, data or message characters, a stop character,
and a trailing margin. There are over 30 barcode symbols.
BARRIER COAT
A coating applied to a face material on the side opposite the printing
surface that lies between the material and the adhesive coat. It
provides increased opacity to the face material; prevents migration
of adhesive to the face material; and/or improves anchorage of adhesive
to face material.
BASIC SHEET SIZE
The size of a sheet of paper which is used to determine paper weight.
Sizes vary depending on the type of stock.
BASIS WEIGHT
The weight in pounds of a ream of paper cut to a given size. Most
backing papers used in pressure sensitive laminations are based
on a ream size of 24" x 36"/500's. Face papers are more
typically 25" x 38"/500's.
BATTERY LABEL STOCK
A durable, acid-resistant label material designed for the demanding
environment associated with automotive batteries.
BEARING BLOCK
A device that holds the die in place in the die station.
BLEED
When the printed image extends beyond the trim edge of the label.
BLISTER
A bubble that forms from gas or fluid that is trapped under the
surface.
BLOCKING
Adhesion between sheets or rolls of pressure sensitive labels usually
due to cold flow, improper drying of inks, or improper curing of
coatings and adhesives.
BLOWN-ON LABELS
A method of label application that uses air pressure to remove the
label from the carrier and position it on the substrate.
BLUSHING
Ink that is milky, foggy or flat in appearance.
Usually caused by humidity in the air.
BOLD FACE
Darker and heavier face than regular type face. Stands out more.
BOND
1) Paper that has no fuzz.
2) To stick materials together with adhesive.
BOUNCE
Rotational movement of the cylinders caused by compression.
BREAK
A tear in a roll of face material or release liner. Such defects
are generally splices and marked by a flag during printing.
BREAKING STRENGTH
The measure of strength a product has.
BRIGHTNESS
The (blue light) reflectivity of a sheet of paper measured under
standardized conditions on an instrument designed and calibrated
specifically for that purpose.
BRILLIANCY
The brightness or intensity of a particular color.
BRITTLENESS
That property of a material which causes it to break or fail when
deformed by bending.
BULK
Thickness of a sheet in relation to its weight. A bulky sheet would
be lighter in weight because it is lacking compactness.
BURSTER
A mechanical device used to separate cross-web perforations at intermediate
locations between labels.
BURSTING STRENGTH
The pressure required to rupture a paper specimen when it is tested
with a Mullen instrument under specific conditions. It is largely
determined by the tensile strength and extensibility of the paper.
Also referred to as Mullen.
BUTT-CUT LABELS
Rectangular labels in continuous form separated by a single knife
cut to the liner across the web. Also referred to Kiss Cut Labels.
BUTT ROLL
A roll of pressure sensitive label stock that is very short in length.
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