Front and back labelling guide
Assess booklet and peel-and-read labels for twin-side application: thickness, opening tabs, sensing, wipe-down, sample trials and quotation requirements.
Application guidance
Qualify the physical label construction as well as the printed artwork. A wider information area changes the label path, application contact and finished-pack checks.
Booklet and peel-and-read labels may be suitable for automatic application, but a flat single-layer label trial does not establish that capability. The complete label must pass through the reel holder, sensor, drive and peel point without opening or damaging its layers, then remain closed and accessible on the finished container. Lancing should review the actual construction before a machine or option is specified.
An expanded content label (ECL) provides additional information in multiple layers, folded panels or a booklet. A resealable peel-and-read construction and a thick folded booklet are not interchangeable. Identify the base label, added layers, opening tab, hinge and closing feature separately. CCL’s expanded-content overview explains these label families; it does not establish compatibility with a particular Lancing labeller.
This guide concerns pressure-sensitive labels supplied on release liner. A non-self-adhesive roll-fed wrap construction uses a different application process and must not be treated as a drop-in replacement.
Application guidance
The converter and machinery supplier need the same version of the label drawing. A change in page count, laminate or tab position should trigger a review rather than an assumption that the old setup remains valid.
| Base label and liner | Record the full footprint, liner type, web width, label pitch and gap. Show the edge that reaches the peel point first and the required winding direction. |
|---|---|
| Thickness profile | Supply the maximum built-up thickness and identify where the label changes thickness. A sensor path through a uniform edge may behave differently from a path through a folded stack. |
| Opening and resealing | Mark the consumer opening tab, hinge and reseal area. Identify regions that must not be crushed, glued shut, rubbed open or trapped against a bottle seam. |
| Container panel | Show the booklet footprint on a real flat, oval or shaped panel, including corner radii, shoulders, ribs and squeeze zones. Include the pack in its normal filled and capped condition. |
| Roll presentation | Provide a production-equivalent reel, not loose finished samples alone. Include reel diameter, core, quantity and a representative joined section if the supplier permits splices. |
| Information approval | Identify the approved artwork and language version for each front/back combination. Packaging-information approval is separate from mechanical application acceptance. |
Application guidance
Evaluate the whole route. A reliable trigger signal is only one part of reliable booklet application.
Label-detection technology must be chosen for the label and carrier combination. Leuze’s selection guidance distinguishes optical, ultrasonic and combined approaches, including booklet constructions. Detection suitability alone does not prove that a complete applicator can transport and apply the label.
Application guidance
The acceptable result is a complete, correctly paired pack, not two independent counts of labels dispensed.
A twin-head layout allows the front and back rolls to be evaluated separately. The booklet head may need different clearances, detection, dispensing and contact conditions from the branding-label head. Confirm each head’s supported configuration before assuming that independent positioning means both can handle any construction.
| Front face | Approve the branding label’s height, centring and skew against named container datums. |
|---|---|
| Back face | Approve the booklet base position, closed profile and clearance from shoulders, handles and seams. |
| Paired pack | Check that both artwork versions belong to the same product and market. Record a pack with only one label as incomplete, even when that label is correctly placed. |
| Use after application | Agree when to inspect adhesion and opening/reclosing behaviour with the converter. Include the real storage and handling conditions relevant to the product. |
| Stops and changes | Repeat the finished-pack check after a reel change, controlled stop and recipe change. Separate material-related defects from setup or artwork mismatches. |
Use the automatic twin-side machine page for the core machine route and the reel-change and restart guide for recovery planning. These links describe selection tasks, not a promise that booklet options are fitted as standard.
Buyer questions
No. A speed demonstrated with a flat paper label cannot be transferred automatically to a booklet construction. Label stiffness, thickness, release, contact method, container control and inspection can each change the usable rate. Specify the required sustained output and agree a trial with the actual front and rear rolls.
No. A resealable information label is intended to open for access to its content. Tamper-evident behaviour is a separate packaging requirement with its own design and validation. Do not treat a booklet tab or reseal edge as proof of a tamper-evident function.
An opened booklet should be treated as a trial defect, not pressed shut and counted as a successful sample. Record whether opening began in the reel, sensor, drive, peel or wipe-down stage, then review the construction and contact path with the label converter and machinery supplier.
A camera viewing a closed pack cannot confirm information hidden inside a closed booklet. Define the visible checks it can perform, such as outer artwork, code, closure and placement, and use a separate approved control for internal page content and version identity.
Provide production-equivalent rolls, a construction drawing, filled and capped containers where that matches production, the matching front label, approved artwork versions and the required output. Include difficult formats and define acceptable opening, resealing, placement and downstream presentation before the trial.
Quotation preparation
Use the label-roll specification guide and sample-testing service to assemble the enquiry. Final compatibility, optional equipment and output remain subject to the actual application.
The references explain label construction, sensing or equipment principles. The selection steps here are application-planning guidance, not a recorded Lancing trial or confirmation of a fitted option.
Include the container, both label constructions, target output and any existing line constraints.