Decoding Corona Treatment, High Whiteness, and Light-Blocking Properties for Premium Flexible Packaging
Product Overview
In the highly competitive world of retail packaging, visual impact and product protection are equally important. When a product is sensitive to light, or when a brand needs a brilliant white background to make its graphics pop, standard clear films fail. This is the exact domain where White Opaque BOPET Film dominates. As a pigment-filled polyester film, it delivers exceptional opacity and whiteness. While global giants like Toray, DuPont PET Film, and SKC PET Film offer a wide range of substrates, the specialized white opaque BOPET stands out as the ultimate solution for dairy and confectionery packaging.
The Core Specs: The Science of White and Corona
What makes White Opaque BOPET Film a critical material for flexible packaging? The data sheet reveals a highly tailored profile:
- Excellent Corona Treatment: The film features a corona-treated surface (often reaching a wetting tension of 38 to 42 mN/m). This dramatically increases the surface energy, ensuring flawless adhesion for printing inks, adhesives, and extrusion coatings. Your graphics will not peel or fade.
- High Whiteness and Opacity: By utilizing advanced pigment dispersion, it provides a brilliant, solid white background. It blocks light transmission, protecting sensitive products (like dairy or certain foods) from UV degradation and extending shelf life.
- Robust Mechanical Strength: It maintains excellent tensile strength (often exceeding 200 MPa), ensuring the film can withstand the high tension of printing and lamination processes without tearing.
Key Applications Across Industries
The unique properties of White Opaque BOPET Film make it indispensable for:
- Dairy Packaging: Used in yogurt lids, milk pouches, and cheese wrappers where light protection and a clean white aesthetic are required.
- Candy and Confectionery: Providing a high-contrast, premium white base for vibrant, eye-catching wrappers.
- Labels and Graphics: The ideal base for high-end labels and promotional materials that require absolute opacity.
Sourcing a Reliable Alternative
While the Toray Lumirror or DuPont PET Film series are legendary standards, global B2B buyers often seek a White Opaque BOPET Film alternative to optimize costs and secure supply chains. A successful replacement requires a manufacturer that can precisely replicate the whiteness index and guarantee a stable corona treatment. If the treatment decays, your printing line will face severe ink adhesion failures.
Technical Characteristics
The following values represent the typical capabilities of our White Opaque BOPET Film range:
- Material: Pigment-Filled Biaxially Oriented Polyethylene Terephthalate
- Thickness Range: 12 μm to 50 μm (Customizable)
- Surface Treatment: Corona Treated (One or Both Sides)
- Whiteness Index: High Opacity (Excellent light blocking)
- Tensile Strength: MD 180 to 220 MPa / TD 180 to 220 MPa
- Thermal Shrinkage at 150°C, 30min: MD 1.0% to 1.5% / TD 0.2% to 0.5%
- Certifications: RoHS, REACH, FDA compliant grades available
Why Choose Jinlu Film as Your Supplier
Jinlu Film is a leading manufacturer of high-performance functional PET films. We offer a direct factory substitute for top-tier brands, delivering the same high whiteness and reliable corona treatment required for dairy and candy packaging. Whether you need standard rolls or custom slitting, we offer factory-direct pricing, reliable global shipping, and quality that rivals the industry giants.
Contact us today for a factory quote, technical data, or a sample of White Opaque BOPET Film.
