Polyester PET Film Materials

Polyester Film For Lamination

  • Material: PET base film with EVA adhesive layer
  • Finish: Clear gloss or clear matte
  • Thickness: 25um-250um roll thickness
  • Temperature: 90C-120C typical range
  • Optical Data: >=90% light transmittance, <=3.0% haze for clear gloss grade
  • Use: Thermal print lamination and printed material protection

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    Films Protective Company is a manufacturer of polyester film for lamination for thermal print lamination and printed material protection. This PET/EVA roll film uses a clear polyester base with a heat-activated adhesive layer, allowing printed paper, paperboard, covers, cards, labels, and packaging surfaces to bond under heat and roller pressure. With 25um-250um thickness options and a typical 90C-120C working range, it helps finished prints keep clean clarity, stable flatness, and better resistance to scuffing, fingerprints, curl, silvering, and light moisture.

    Product Overview

    This thermal lamination PET film is made for printed work that needs a stronger surface while keeping colors, text, and graphics visible. During use, the EVA side softens under heat and pressure, then bonds to the print. The PET layer adds clarity, stiffness, and dimensional stability, helping the finished sheet stay smooth during trimming, folding, stacking, and regular handling.

    The film runs on sheet-fed and roll-fed machines used in commercial printing, paper packaging, publishing, and print finishing. It is not a plain clear PET substrate. For coated paper, digital toner, heavy ink coverage, or thicker board, the first run should check temperature, roller pressure, line speed, ink dryness, and paper thickness together. These details often decide whether the surface stays clear, flat, and free from silvering or weak edges.

    Films Protective Company controls gauge stability, EVA coating uniformity, roll tension, and edge appearance during production and slitting. Common thicknesses include 26um, 38um, and 75um, with wider options for light sheets, book covers, menus, cards, and folding cartons. Gloss grades make printed colors brighter; matte grades provide a low-glare finish for premium paper products.

    Benefits

    • Reduces surface wear on covers, cartons, menus, cards, labels, and printed sheets during frequent handling.
    • Keeps printed text, fine lines, images, and color blocks clear after finishing.
    • EVA adhesive layer supports bonding to coated paper, paperboard, cards, labels, and printed packaging.
    • PET base improves stiffness, tear resistance, and finished sheet durability.
    • Controlled thickness and roll tension support better lay-flat performance.
    • Gloss and matte finishes give different surface effects for commercial print work.
    • Suitable for one-side or two-side lamination when heat, pressure, PET orientation, and machine speed are properly matched.

    What lamination temperature helps PET/EVA film bond cleanly to printed paper?

    For print lamination, temperature should follow the material and machine condition, not one fixed setting. A common PET/EVA working range is 90C-120C. Actual settings depend on roller pressure, machine speed, paper thickness, ink dryness, and adhesive coating weight. Low temperature may cause weak bonding, silvering, or edge lift. Too much heat may cause haze, curl, or surface stress. A short trial run is useful before larger production, especially on heavy board or dense printed areas.

    TDS

    Item

    Typical Value

    Base Material

    Heat stabilized PET polyester film

    Thickness Range

    50um-350um

    Appearance

    Clear, translucent, or milky white depending on grade

    Surface Treatment

    Untreated, one-side treated, or two-side treated

    Surface Tension

    42-54 dynes/cm depending on treatment

    Thermal Shrinkage Test

    150C x 30 min sample test

    MD Shrinkage

    Typical <=0.35%, grade and thickness dependent

    TD Shrinkage

    Typical <=0.25%, grade and thickness dependent

    Processing Temperature Window

    100C-150C for coating, drying, and ink curing reference

    Main Process Fit

    Printing, coating, insulation, lamination, die cutting

    Applications

    • Printed packaging boxes and folding cartons requiring surface protection.
    • Book covers, catalog covers, brochures, and presentation materials.
    • Menus, cards, calendars, tags, and commercial printed sheets.
    • Labels and paper-based graphics handled often in daily use.
    • Gift packaging, retail paperboard, and promotional print finishing.
    • Gloss lamination for brighter color and sharper shelf appearance.
    • Matte lamination for low-glare surfaces and a softer premium finish.

    How does the EVA adhesive layer improve print protection and flatness after lamination?

    The EVA adhesive layer is the bonding side of the film. When heated and pressed, it flows onto the paper surface and printed ink layer, forming a firm bond between PET and the print. A uniform coating helps reduce cloudy spots, bubbles, weak adhesion, and edge lifting after cutting or folding. For two-side lamination, matched roll thickness, PET orientation, temperature, and tension help reduce curl and waves.

    Production Line

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    FAQ

    What is polyester film for lamination used for?

    It is used for thermal lamination of printed paper, paperboard, covers, cards, labels, and packaging surfaces.

    Does this film include an adhesive layer?

    Yes. It uses a PET base film with an EVA heat-activated adhesive layer.

    What temperature is suitable for thermal lamination?

    A typical range is 90C-120C, adjusted by speed, pressure, paper type, ink condition, and film thickness.

    Can the film help reduce curl after lamination?

    Yes. Stable thickness, roll tension, EVA coating, and suitable machine settings help reduce curl and edge lifting.

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