Confirm film construction, lamination side, surface condition, and whether metal-layer damage is already present.
L-2455 / Met-PET to paperboard
L-2455 / Product
Water-Based Laminating Adhesive for Metallized PET Film
L-2455 is a water-based wet-lamination adhesive for bonding metallized PET film to paper or paperboard, with roller or gravure coating and production use subject to material and process trials.
What it is
A water-based adhesive for one defined laminate structure
L-2455 is intended for wet lamination of metallized PET film to paper or paperboard. It is not presented as a universal flexible-packaging, transfer, or dry-lamination adhesive.
The water-based high-solids polymer emulsion system is evaluated by coating the adhesive, bringing the actual film and paper layer together, progressively removing water, cooling the laminate, and allowing it to balance before downstream checks.
International sales and technical support can coordinate product matching from the substrate and process details. A sample direction still requires validation on the buyer's materials, equipment, drying path, and acceptance method.
Application method
Coat, laminate, dry, cool, then balance
These are TDS-backed trial stages, not fixed machine setpoints. Drying temperature, coating weight, and speed remain line-specific.
L-2455 wet-lamination trial path
- 01Coatroller or gravure
- 02Laminatecontrol nip and tension
- 03Dry and coolprogressively remove water
- 04Balance and teststarting guidance: at least 24 h
Typical control information
Product facts that passed the publication gate
Typical and batch-control information describes a starting control context. It is not a guaranteed specification or contract value.
Product modelL-2455Confirmed first-party product identity for this page.
Polymer systemWater-based high-solids polymer emulsion systemProduct-family description; not a compliance or environmental claim.
Typical solids52 ±2% (50–54% batch-control context)Typical control information, not a contract guarantee. Confirm the current model-specific document before use.
Typical viscosity50–70 s at 25°CCatalogue test method: coating cup No. 4. Confirm the current model-specific document before use.
Typical pH7.0–8.0 at 25°CCatalogue reference value for L-2455; not a contract guarantee.
Target structureMetallized PET film laminated to paper or paperboardActual film side, paper grade, and complete structure require a trial.
Application methodsWet lamination with roller or gravure coatingCoating transfer and machine setup must be evaluated on the real line.
Published dry-film descriptionTransparent to semi-transparent and flexibleCatalogue description only; approve the real laminate after full drying and conditioning.
Trial and validation guidance
Build evidence on the actual laminate
Use labeled samples and record one process change at a time so appearance and bond observations can be traced to real inputs.
Record paper grade, GSM, absorption, moisture condition, and the side presented to the adhesive.
Document coating method, transfer setup, nip, tension, speed, drying zones, airflow, exhaust, and cooling.
After balancing, evaluate appearance, curl, bond interface, metallized layer, and the real cutting, folding, or box-making step.
Factors affecting results
Lamination is a material-and-process system
A defect should not be assigned to the adhesive until the film, paper, coating transfer, water removal, tension, and test timing have been compared.
Film surface
Metallized PET construction, lamination side, treatment, contamination, metal-layer anchorage, age, and storage.
Paper or board
Grade, GSM, coating, absorption, moisture, flatness, surface dust, and lot variation.
Coating transfer
Roller or gravure condition, coverage uniformity, wet film distribution, nip, and web alignment.
Drying and cooling
Zone sequence, airflow, exhaust, residual water, speed, web temperature, and cooling before winding or stacking.
Web handling
Tension balance, curl tendency, wrinkles, winding pressure, storage orientation, and elapsed time.
Acceptance method
Conditioning interval, peel or interface observation, appearance target, downstream conversion, and regulated-use boundary.
Common problems
Use the defect to decide what evidence to collect
These are diagnostic questions, not guaranteed corrections. Keep failed and acceptable samples whenever possible.
| Problem | Possible direction | What we need from you | Trial note |
|---|---|---|---|
| Bubbles | Check wetting, coating uniformity, entrained air, nip, paper absorption, dryer sequence, and web temperature. | Marked defect samples, film/paper lots, coating method, speed, nip, drying zones, and when bubbles first appear. | Separate air entrapment from residual-water or surface-wetting causes before changing several inputs. |
| Whitening | Review residual moisture, drying progression, adhesive-film uniformity, paper moisture, and cooling before winding or stacking. | Photos by process stage, dryer and airflow settings, speed, paper condition, balance time, and acceptable reference. | Do not treat one temperature change as a universal fix; confirm water removal without damaging the laminate. |
| Weak peel / bond | Locate the failing interface and compare film side, metal-layer anchorage, paper surface, coating coverage, drying, and conditioning. | Unlaminated and laminated materials, marked sides, failure interface photos, test method, timing, and downstream exposure. | No bond strength is guaranteed. A weak result may involve the film, metallized layer, paper, adhesive transfer, or process. |
| Curl | Compare moisture imbalance, paper grain and moisture, adhesive distribution, drying asymmetry, tension, winding, and storage orientation. | Curl direction, dimensions, timing, paper data, web tensions, dryer zones, winding condition, and both layer samples. | Confirm whether curl develops hot, after cooling, during balancing, or after converting. |
| Wrinkles | Review film flatness, web alignment, tension balance, nip condition, thermal distortion, paper stability, and winding pressure. | Web-path photos, wrinkle location and direction, tension and nip records, speed, temperatures, and material widths. | Mechanical and thermal causes should be isolated before assigning the defect to adhesive rheology. |
| Metallized-layer damage | Identify whether the metal layer transfers, fractures, scratches, or delaminates; confirm film construction, bonding side, nip, tension, heat, and test method. | Original film, failed laminate, supplier datasheet, marked side, interface photos, process history, and comparison film if available. | Metal-layer integrity is film-specific and must be validated; this page makes no universal protection claim. |
Sample matching
Information needed before an L-2455 trial
A complete first message helps the product and technical team decide whether a sample discussion is appropriate.
Metallized PET filmFilm type, construction, supplier data, and lamination side
Paper layerPaper or paperboard type, grade, GSM, surface, and moisture condition
Current methodWet-lamination and roller or gravure coating details
Machine speedNormal speed, trial speed, web width, and current stability
Drying setupZones, temperature controls, airflow, exhaust, and cooling
Target resultAppearance, bond requirement, test method, and downstream conversion
Current defectWhen it appears, affected area, interface, photos, and comparison result
SamplesWhether unlaminated, failed, and acceptable references are available
Related products and applications
Follow the material path, not a generic adhesive claim
The Paper & Board application page provides adjacent structure context. Use Technical Support when an L-2455 laminate needs a sample-led review of its materials, process, drying, or failure interface.
Water-Based Ink for Paper & Board Packaging
Water-based ink and varnish matching for paper, board, printed sheets, and packaging converters.
FAQ
L-2455 questions buyers usually ask
Is L-2455 designed specifically for metallized PET film to paperboard?
L-2455 is intended for wet lamination of metallized PET film to paper or paperboard. The exact film construction, bonding side, paper grade, machine setup, and downstream requirement still need sample and line-trial validation.
Which side of the metallized PET film should be bonded?
Identify the film construction and the supplier-designated lamination side before a trial. Send a marked film sample or datasheet because similar-looking metallized films can present different surfaces and metal-layer behavior.
Can L-2455 run on roller or gravure coating equipment?
The first-party TDS identifies roller and gravure coating as applicable methods for wet lamination. Actual coating transfer, line speed, drying, nip, and tension must be confirmed on the intended equipment.
What drying information is needed before a trial?
Provide the number and length of drying zones, temperature and airflow controls, exhaust condition, line speed, coating method, web width, and whether residual moisture, whitening, bubbles, or curl are already visible.
How long should the laminate balance before cutting or folding?
The TDS marks at least 24 hours of balancing as starting trial guidance after progressive drying and cooling. The required interval must be validated for the actual materials, moisture removal, roll or sheet condition, and downstream converting step.
What samples and process data are needed for a recommendation?
Send metallized PET film with the lamination side marked, paper or paperboard, current coating method, machine speed, drying setup, target appearance and bond requirement, defect details, and both acceptable and failed samples when available.
Is L-2455 approved for food, tobacco or pharmaceutical packaging?
Regulated applications require model-specific SDS, test reports and compliance documents. No general food-contact, tobacco, pharmaceutical, EU, migration, or other regulated-use approval is claimed on this page.
Technical limitations and compliance boundary
Production approval belongs to the actual materials and documented use
Typical solids and trial guidance are not contract guarantees. The page does not promise bond strength, drying temperature, production speed, packaging, transport classification, environmental status, or regulated-use suitability. Regulated applications require model-specific SDS, test reports and compliance documents.
Discuss an L-2455 sample for your Met-PET-to-paper structure
Send the film side, paper grade, coating method, speed, drying setup, target, defect, and available samples. The discussion identifies a trial path; it does not guarantee the result.