Roll Label Glossary

This glossary defines common terms used when ordering, printing, and applying roll labels. Understanding these terms helps ensure compatibility with your printer, applicator, and product.

 

Adhesive

The layer of material that bonds the label to a surface. Adhesives are selected based on surface type, environment, and application conditions. Common types include permanent and removable.

 

Black Mark

A printed mark, typically a solid black rectangle, used by some label printers and applicators to detect label position. Black marks are commonly printed on the liner or the back of the label and are read by an optical sensor to ensure accurate feeding, cutting, or dispensing.

 

Black marks are used with die-cut labels when the excess material around the labels (the waste matrix) remains in place. This is common with non-rectangular label shapes, where the front edge of the label is uneven and gaps between labels cannot be reliably detected. The black mark gives the printer or finisher a consistent reference point for accurate positioning.

 

BOPP (Poly)

Short for biaxially oriented polypropylene. A durable plastic film label material commonly used for moisture resistance, oils, refrigeration, and frequent handling. BOPP is one of the most widely used “vinyl” or plastic-style label materials, offering a similar look and durability without using PVC.

 

Butt Cut

A type of cut where labels are separated edge-to-edge with no gap between them. Commonly used for continuous or on-demand printing systems.

 

Continuous Labels

Labels supplied on a roll with no pre-cut shape or fixed label length. The printer cuts each label to the desired length during printing.

 

Core Size

The inside diameter of the cardboard tube the labels are wound around. Common core sizes include 1", 2", and 3". Core size must be compatible with your printer or applicator.

 

Die-Cut Labels

Labels that are cut to a specific shape and size on the roll, with a gap or black mark between each label. Common for standard product labeling.

 

Face Stock

The printable top layer of a label. Face stock can be paper or film (such as BOPP) and is chosen based on durability, appearance, and environment.

 

Gap

The space between individual die-cut labels on a roll. Gaps help printers and applicators detect label edges for accurate feeding and registration.Go to b

 

Gloss Finish

A shiny label finish that enhances color vibrancy and contrast. Gloss finishes are often used for retail packaging and bold designs but can reflect light.

 

Leading Edge

The edge of the label that enters the printer or applicator first. Orientation of the leading edge is important for printer compatibility.

 

Liner

The backing material that supports the label until it is applied. The liner is removed during printing or application and is not part of the final label.

 

Matte Finish

A non-reflective label finish that reduces glare. Matte finishes are often preferred for readability, barcodes, and situations where labels are written on.

 

Multi-Across

A label configuration where multiple labels are positioned across the width of the roll. Multi-across layouts increase efficiency but require compatible printers and applicators.

 

Outside Diameter (OD)

The total diameter of a fully wound label roll. Outside diameter affects whether a roll will physically fit in a printer or applicator.

 

Paper Labels

Labels made from paper face stock. Paper labels are commonly used for dry, indoor applications where moisture resistance is not required.

 

Registration Marks

Printed marks used by printers or applicators to align cuts, colors, or label placement accurately during printing or finishing.

 

Unwind Direction

The direction labels face as they come off the roll. Common unwind options include labels facing out or labels facing in. Unwind direction must match printer or applicator requirements.

 

Waste Matrix

The leftover liner and surrounding material that remains after die-cut labels are removed. The waste matrix is stripped away during manufacturing or application, leaving only the individual labels on the liner.

 

Efficient matrix removal is important for smooth feeding, especially on applicators or high-speed labeling systems.