Lidding film for PP trays
Lidding film is the flexible film that closes a filled tray: the tray sealer draws it from the roll, seals it to the tray flange and cuts it flush. The film, not the tray, decides how the pack looks on shelf and whether the seal holds through distribution.
VLM Poliplast, a flexible packaging manufacturer in Romania, supplies lidding film for polypropylene (PP) trays: slit to the width of your tray sealing line, printed in 1–8 colours or left clear, and delivered across the European Union and, on request, to other European markets, with full technical documentation in English.
Every roll ships with a technical datasheet and a food-contact declaration of compliance under Regulation (EU) No 10/2011. If you already know your specification, go straight to the quote form.
Where lidding film is used
Fresh produce and salads
Trays of fruit, vegetables and fresh-cut salads, with anti-fog to keep the lid clear in the chiller and perforation where the product needs to breathe.
Ready meals and prepared food
Sealed PP trays for chilled prepared dishes, where the lid carries the branding and the batch data and has to hold its seal from the filling line to the shelf.
Trays under modified atmosphere
Where the pack holds an injected gas mix, the lid must hold it too: the lidding film is built on structures with EVOH or metallisation.
The seal: a permanent weld to the tray flange
Lidding film for PP trays is supplied with a weld seal. The sealant layer fuses to the flange and the closure is permanent, which is the strongest hold against leaks and against tampering in distribution, and the pack is opened by cutting the lid.
Seal strength is not a machine setting. It comes from the sealant layer specified for the film and matched to your tray material, and from the temperature, pressure and dwell time your sealer applies to it.
The structure is agreed at quotation and validated with a sample run on your own tray sealer before the series order. With lidding film, the seal to your trays is the specification.
One polymer for tray and lid
A PP tray closed with a PP-based lid keeps the whole pack predominantly in one polymer family, designed for the polypropylene recycling stream. The films we supply for PP trays are laminates whose inner layer is cast polypropylene, the same sealing polymer that closes flow pack and pouches: that inner layer is the face that seals onto the tray flange, while the outer layer carries the print and the mechanical strength.
With Regulation (EU) 2025/40 in application since 12 August 2026, tray-and-lid packs in a single material family are moving into retailer specifications. Recyclability is assessed on the complete pack and declared per ordered structure; VLM Poliplast does not issue a certified RecyClass class. The single-family logic is on mono-material film, the timeline on the PPWR guide.
Order specifications
| Parameter | What we configure |
| Tray material | Polypropylene (PP) trays; the sealant layer is matched to the tray flange |
| Structure | Laminate with a cast polypropylene sealing layer on the tray side; barrier layer added where the pack requires it |
| Seal | Weld seal, from the sealant layer specified for your tray material |
| Options | Anti-fog for chilled display, macro or micro perforation for respiring produce, barrier structures for modified atmosphere |
| Thickness | Set by tray size and by the demands of the line, agreed per structure |
| Width | Slit to the web width of your tray sealer, on separate rolls for separate lines |
| Printing | Printed lidding film in 1–8 colours, or unprinted |
| Roll configuration | Roll diameter, core diameter, unwind direction and print position |
| Documents | Technical datasheet per structure, migration reports from an independent third-party laboratory, and food-contact declaration under Regulation (EU) No 10/2011, in English |
| Minimum quantity and lead time | Confirmed at quotation, for the structure, width and print requested |
Frequently asked questions
Does the same lidding film seal to every tray?
A lidding film does not seal to every tray. The sealant layer must match the tray material: a film specified for polypropylene trays will not seal reliably to trays made of other materials. That is why every quote starts from the tray you actually run, and why the configuration is confirmed with a sample on your own sealer.
Is lidding film suitable for direct food contact?
Yes, lidding film is suitable for direct food contact. The film faces the food inside the sealed tray, and every roll is delivered with a declaration of compliance under Regulation (EU) No 10/2011, a technical datasheet for the structure and batch traceability, with global migration analyses carried out at an independent third-party laboratory.
What information do you need for a lidding film quote?
A lidding film quote needs the packed product, the tray material and dimensions, the web width of your tray sealing line, whether the pack runs under modified atmosphere, and the film you use today if any. With these details we propose the structure from the first reply and validate it with a sample.
Request a quote for lidding film
Tell us the tray you run and how the pack should open; matching the film to both is the part we answer for.
Related resources
CPP film
The cast polypropylene our lidding films are built on: how it seals and why it stays in the PP family.
Perforated film
Macro and micro perforation done in-house, for produce that keeps respiring after packing.
Barrier film
Structures with EVOH or metallisation, for trays that must hold an injected atmosphere.
Mono-material film
The single-family structures replacing mixed laminates, tray-and-lid packs included.
PPWR, Regulation (EU) 2025/40
Why single-family tray packs are entering retailer specifications, and on what dates.
Lids lifting in the chiller, or seals failing in transit?
Both usually trace back to the same thing: a sealant layer that does not match the tray. Send the datasheet of the film you run and the tray specification; we check the match and propose the correction.