A label applicator is a machine that applies printed labels to products, cases or pallet loads, often printing them on demand first. On pallet lines it usually applies GS1-128 logistics labels carrying the SSCC, placing them on one or more sides of the unit load as it passes or pauses on a conveyor.
How print-and-apply works
A thermal transfer or direct thermal print engine prints the label from data sent by the WMS or line controller. An applicator then transfers it to the load using a tamp pad, air blow, or wipe action. Pallet systems often use a swing arm or traversing head so they can label two adjacent sides without turning the load.
Placement guidelines
The GS1 logistic label guideline calls for labels on at least two adjacent sides of a pallet, with the SSCC barcode placed roughly 400 to 800 mm above the base, and away from wrap seams and corners. Placing the label outside the stretch wrap, or under clear film that does not distort the barcode, improves scan rates. Requirements vary by retailer routing guide, so check each customer's rules.
What to consider
Line speed, label size, number of sides, integration with the WMS, and whether the label must survive cold or wet storage all shape equipment choice. Applicators are typically placed after the stretch wrap machine so the label is not covered or torn.
Related Terms
- GS1-128 Barcode
- GS1 SSCC
- ASN (Advance Shipping Notice)
- Stretch Wrap Machine
- Palletizer
- EDI (Electronic Data Interchange)
- UPC (Universal Product Code)
- Browse all glossary terms
Frequently Asked Questions
Where should a pallet label go?
Common practice, following GS1 guidance, is to label at least two adjacent sides of the unit load, with the SSCC barcode roughly 400 to 800 mm from the bottom of the pallet so it can be scanned from a forklift or by hand. Keep labels flat, away from corners and wrap tails, and follow each retailer's routing guide, since some customers specify exact positions or extra labels.
Should labels go under or over the stretch wrap?
Most operations apply labels over the wrap so the barcode is not distorted or obscured by film. If labels must go under wrap for protection, use clear film and verify scan rates, because creases and glare cause read failures. Placing the applicator after the wrapper in the line is the simplest way to keep labels on the outside.