Last updated: August 17, 2026. Labeling and coding are two different machines that buyers routinely conflate. A labeler applies a physical label — pressure-sensitive, sleeve or roll-fed — to the pack; a coder prints a date, lot or barcode directly onto the pack or label. The shortlist splits at that line, and splitting it wrong is the most common sourcing mistake in this category.
This entry explains the principles. For the supplier landscape, see the Top 10 Labeling & Coding Machine Manufacturers ranking, and browse the Labeling & Coding equipment category.
Label application: pressure-sensitive, sleeve and roll-fed
Pressure-sensitive (self-adhesive) labelers peel a pre-cut label from a liner and apply it with a tamp, blow-on or wipe-on head as the product passes. Sleeve labelers drop a printed shrink sleeve over the container and heat it to conform. Roll-fed labelers cut a label from a continuous web and wrap it around the container with glue. Each suits a different container, speed and decoration need — a round bottle at high speed is not the same job as a flat carton.
Product coding: CIJ, thermal transfer and laser
Coding marks the pack itself with variable data. Continuous inkjet (CIJ) sprays conductive ink droplets through a nozzle and deflects them to form characters — the workhorse for date and lot codes on high-speed lines. Thermal transfer (TTO) melts a ribbon onto the substrate for a crisp, durable code. Laser coding etches or ablates the surface with no consumable ink. The choice is driven by what the code must survive — scuffing, condensation, freezer, retort — and by the substrate.
Print-and-apply: when the code must be on the label
Print-and-apply systems print the code onto a label and then apply the label in one station — the bridge between coding and labeling. They are used where the code must be on a label (for example case labels with barcodes) rather than directly on the pack.
Choosing between labeling and coding
- Label or code first? If the pack carries a printed label, start with the labeler; if it needs a date/lot/barcode, start with the coder.
- What must the code survive? Scuffing, moisture, freezer or retort conditions push the decision toward TTO or laser rather than CIJ.
- Speed and substrate. Specify the container, surface and line speed; a labeler for wet glass at high speed is not a case labeler.
- Consumables and total cost. CIJ ink and make-up, TTO ribbon, and label stock are recurring costs that dwarf the machine price over its life.
