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Wallis -PET Sheet
Wallis
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Wallis BOPET film roll for window box packaging is a clear, glossy polyester film designed for folding-carton windows, food boxes, cosmetic display boxes, gift packaging and retail cartons. It provides product visibility together with practical strength, dimensional stability and converting performance.
Available options include customized thickness, width, roll diameter, core size, slit-roll format and corona-treated or untreated surfaces. The film can be evaluated for window patching, printing, lamination, die cutting and other packaging conversion processes.
For an accurate recommendation, provide the carton dieline, window dimensions, film overlap, adhesive system, machine model, target running speed, product type, destination market and annual volume.
The following values reflect the listed Wallis product range. Exact performance depends on film grade, thickness, treatment, test method and production specification. Confirm critical tolerances and acceptance criteria before ordering.
| Parameter | Available Specification |
|---|---|
| Material | Biaxially oriented polyethylene terephthalate film |
| Thickness | 6–75 μm, customizable |
| Width | 200–2500 mm, customizable |
| Appearance | High clarity with a glossy surface |
| Surface Treatment | Corona treated or untreated; treatment side and target level to be confirmed |
| Tensile Strength | Listed value ≥200 MPa; confirm direction and test method |
| Haze | Listed value ≤3.5%; confirm by grade and thickness |
| Heat Resistance | Listed value up to 150°C; suitability depends on exposure time, load and grade |
| Core Size | 3-inch or 6-inch core |
| Roll Format | Jumbo roll or slit roll |
Low-haze, high-gloss film allows shoppers to see the color, shape and condition of the product without opening the carton. Optical targets should be agreed using the actual film thickness and approved sample.
Biaxial orientation gives PET film useful tensile strength and dimensional stability. The correct gauge helps the patch remain flat while moving through slitting, cutting, gluing, folding, filling and distribution.
Consistent thickness, winding and surface condition support reliable film feeding and placement. Machine trials should verify static behavior, cut accuracy, film tracking, adhesive anchorage and patch registration.
Corona-treated or coated grades can improve adhesion for selected inks, coatings and laminating adhesives. Treatment level, treated side, ink system and aging period should be confirmed before production.
BOPET offers useful resistance to moisture, handling and many common chemicals. Finished-package performance still depends on the film grade, carton design, adhesive, filling conditions and exposure environment.
Successful carton windows depend on more than transparency. Film thickness, window geometry, overlap, adhesive area, roll direction and machine settings must work together. The following points should be reviewed before a trial.
| Selection Factor | Information to Confirm | Why It Matters |
|---|---|---|
| Window Size and Shape | Opening dimensions, corner radius and carton panel position | Affects film stiffness, carton strength and product visibility |
| Patch Overlap | Film extension beyond every edge of the opening | Provides space for adhesive and secure anchorage |
| Adhesive System | Adhesive chemistry, coat weight, curing and food-contact context | Influences bond strength, appearance and production reliability |
| Film Treatment | Treated side, target surface energy and time from production | Supports ink, coating or adhesive compatibility |
| Roll Configuration | Width, diameter, core, winding direction, splice and roll weight | Ensures compatibility with the window-patching machine |
| End-Use Conditions | Product, temperature, humidity, storage, filling and transport | Determines the required grade and validation plan |
Discuss Your Window-Patching Line
Clear windows are used in bakery, confectionery, snack and other food-display cartons. Food-contact suitability must be confirmed for the exact film grade, adhesive, contact type, temperature and destination market.
A transparent patch can display color, shape and product details while preserving printed branding on the surrounding carton. Film appearance and scratch protection should be considered for premium retail presentation.
Window cartons help buyers inspect the actual product and included components. Film gauge and patch area should be matched to the size of the opening and the required stiffness.
BOPET window film can be used for candles, accessories, crafts, apparel items and promotional gift sets where product visibility supports shelf presentation and customer confidence.
Define the application: window patching, printing, coating, lamination or die cutting.
Provide dimensions: thickness and tolerance, slit width, roll length or diameter, core and maximum roll weight.
Confirm surface requirements: treated side, target surface energy, ink, coating or adhesive system.
Set optical requirements: clarity, haze, gloss, defects and approved appearance sample.
Share converting conditions: machine model, speed, cutting method, winding direction and splice policy.
List compliance needs: destination market, food-contact context and the exact technical or regulatory documents required.
Key checks can include film identity, thickness profile, width, haze, gloss, visible defects, surface treatment, winding, core condition, splice count and roll labeling. Test methods and sampling frequency should be agreed for critical properties.
Before mass production, a trial roll can be used to evaluate feeding, static, cutting, adhesive anchorage, placement accuracy, carton folding and final appearance on the buyer’s equipment.
For repeat orders, retain the approved grade, treated side, roll configuration and acceptance sample. Revalidate performance when the adhesive, ink, machine, film thickness or carton design changes.
Wallis supports customized BOPET film supply for window boxes, printing, lamination and packaging conversion. Options can include customized gauge, width, core, roll format and surface treatment within confirmed production capability.
OEM and bulk orders can be reviewed using the customer’s carton drawing, film specification or current sample. Technical documents and certificates should be requested by exact name and confirmed for the supplied grade and production batch.
Document requirements vary by application and market. Tell Wallis whether you need a technical data sheet, safety data sheet, food-contact declaration, restricted-substance report or quality-system documentation so availability can be confirmed before ordering.
Store BOPET rolls in their protective packaging in a clean, dry indoor area, away from direct sunlight, moisture and excessive heat. Protect roll edges and cores during handling, and allow material to reach suitable converting conditions before use.
PET film may be recyclable where suitable collection and recycling systems exist. However, a window carton combines film, paperboard, ink and adhesive, so recyclability depends on the full package design, component separation and local infrastructure.
Packaging teams should evaluate the smallest functional window, appropriate film gauge, adhesive compatibility and local design-for-recycling guidance before making environmental claims.
Many window applications use film within the lower part of the 6–75 μm product range, but the correct thickness depends on window size, carton design, stiffness, machine speed and end-use conditions. A trial is recommended.
Food use must be confirmed for the exact film grade, adhesive, contact conditions and destination market. Share whether the film has direct or indirect food contact and the required documentation.
Yes. Width, thickness, roll diameter, core size, winding direction and slit-roll format can be customized within production capability and minimum-order requirements.
Corona treatment may improve compatibility with selected inks, coatings or adhesives. Confirm the required treated side, surface energy, converting process and time between film production and use.
Provide the application, thickness, tolerance, width, roll diameter, core, roll weight, treatment, quantity, destination, required documents and packaging method. A current sample or machine specification is helpful.
Suitable treated or coated BOPET grades can support printing and lamination. Ink, coating, adhesive, drying conditions and bond requirements should be tested with the selected grade.
MOQ depends on film grade, thickness, width, treatment and slitting requirements. Send the full specification so Wallis can confirm the most practical production quantity.
Evaluate clarity, stiffness, feeding, cutting, static, adhesive anchorage, patch placement, carton folding and finished-pack appearance using the intended machine, adhesive and paperboard.
Recyclability depends on the complete carton, film, adhesive and local recovery system. Some recycling guidelines may require easy film separation or limits on non-paper components, so verify local requirements.
