Roll Labels Glossary
Roll labels glossary
Leakage of the adhesive from under the label can cause the edges of the roll to become tacky.
This is the direction that the printed artwork should always be facing.
The flat surfaces or rings at the ends of cylinders on a press that come in contact with each other during printing.
Printed graphics or text that extends to the edge of a printed product.
Continuous rolls of rectangular labels using a single cut to separate the labels.
A very short roll of material.
The end to end joining of two rolls of materials.
Paper thickness in thousandths of an inch.
The measurement of the liner from edge to edge of the label/roll.
Labels that are manufactured from a continuous web of label stock, which is not cut into units before execution.
The type of manufacturer who produces plain or printed rolls and sheets, including pressure-sensitive labels.
The device to mount the core to the shaft.
Metal, wood or compressed paper plugs which are driven into the paper core of the finished roll to prevent the core from being damaged during transport.
The inside diameter of the core in a roll of labels
The arc of the die blades where they meet so that they can create a rounded corner within the die.
Shrinking of the web between printing units that can cause the press to misregister.
The direction across the grain.
The opposite direction that the machine is running
See impression cylinder
The gap in the cylinders of a press where the mechanism for plate (or blanket), clamps, and grippers is contained.
A specific type of die used on roll presses that combines the die and the cylinder into one piece.
The top layer of a material that is printed on, sometimes also called the substrate.
A marker that is placed in rolls materials during printing or converting to designate a change in the material. This is normally done when there is a splice, defect, or a material specification change. Flags can also be used to mark a specific material length.
The flexographic printing process.
Using flexible plates with raised images to transfer ink to the material being printed.
Fast-drying fluid or pasty inks for flexographic printing.
When the edge of a roll is malformed and is no longer a circle
This is a splice that is used to connect two rolls of material into one so the machine can run without having to stop for a roll change.
The rollers which directly contact the plate on a printing press.
The margin, or space between the labels around.
A faint printed image that appears on a printed sheet where it was not intended.
The orientation of the fibers in the material.
Faint outline that appears around the edges of a printed image.
A device used to accelerate the unwinding of a roll of labels on a high-speed automatic label dispenser.
ID (also known as inner diameter)
Refers to the inside dimension of the roll core.
The non-driven roller mechanisms on converting machines that are used to support and direct the web as it travels through the machine.
A procedure for placing the same image on the printing plate in multiple places so it prints consistently on a roll.
Putting an image on paper.
A small diameter bar mounted in place of the impression cylinder for running certain types of materials.
The cylinder on a printing press against which the paper picks up the impression from the inked plate or the blanket.
Adding copy to a previously printed page.
A mechanism that controls the forward travel of the web into the press.
The area on a printing press that holds ink.
A press coupled to another machine for die-cutting, creasing, folding, etc.
A roll of web material that is larger than the standard diameter.
Knife cut labels
See butt-cut labels
See labels around
See labels across
The distance from the top of one label to the top of the next label. (label length around + gap)
The measurement of a label across the roll.
The measurement of a label around the roll.
The edge of the roll is fed into the machine.
Long edge first (LEF)
The orientation of the label that comes off the finished roll first.
How tight a curve is on an object.
Refers to the space between the labels.
A full-width roll that has finished the primary manufacturing process and is usually untrimmed and unslit.
An area where tape has been used to attach two rolls of material to form one continuous web.
Machine direction of the material
1/1000 of an inch, the unit of measure that is used for the thickness of paper/film.
Roll of paper, film, or foil as received by the mill or the manufacturer.
See pull rolls
OD (also known as outer diameter)
The outside diameter of a cylinder, core, roller or roll of labels.
The part of the trim width that is not utilized. Usually, a narrow roll which is left over.
Squeezing the plate during the flexo printing process, this can cause a halo around the printed image.
Holes on the edges of a liner that are used for transporting labels through the dot matrix and continuous laser printers.
How many times a plate must be changed within a single order.
Pull rolls (or nip)
The point of contact between two rolls. Often referred to as the pull or draw rolls of a web press.
A finished roll of labels.
The correct placement of the artwork on a label or other printed material.
The dimension around the plate and cylinder used for a specific job.
A method of running materials through a printing machine. A roll of material is fed into a printing unit, printed, and then rewound into a roll as it exits the machine.
A method of running material through a printing machine. A roll of material is fed into a printing unit and converted to sheets as it exits the press.
A press that features a roll-to-roll operation.
Short edge first (SEF)
The orientation of the label that comes off the finished roll first.
When the paper in a roll is not properly glued to the core.
Joining rolls together with tape to produce a continuous web.
A device for eliminating static electricity.
An attachment designed to remove the static electricity to avoid ink set-off and problem feeding materials.
See butt roll
See face material
Slipping of successive winds of a roll of material so that the edge is conical rather than flat.
Teeth per inch
Refers to cutting dies, cylinders, sheeters, blades, punches, etc.
The number of cuts in a perforation in each linear inch.
The time it will take to print your labels once you approve your proof. Our three standard turnaround times are:
- 24-hour rush
- 2 business days
- Standard 4 business days
Stationary bars on a flexo press that guide the web so it is turned front to back, and prints on the reverse side with the printing units located near the turn bar.
Guides that keep the web in a line through the press to keep the material feeding evenly.
A press that prints from a web (or rolls) of material.
The amount of tension that is applied in the direction of travel of a web of material through a web press.
The roll of material as it moves through the machine in the process of being converted/printed.
The measurement of the web that is perpendicular to the machine direction.
Position of the printing as it comes off the finished roll.
With the grain
Feeding paper into the press parallel to the grain of the paper.
This type of label extends all the way around the material that it is applied to.
Visit our custom roll labels page