OPPalyte™ 278 WOS-2

Oriented Polypropylene Film

Product Description

OPPalyte WOS-2 is a one-side treated, one-side sealable, white opaque OPP film with a proprietary cavitated core. WOS-2 was developed to provide performance improvements over 278 WOS in terms of lower and more consistent COF, lower MST, and improved print performance. WOS-2 was developed and designed for frozen novelty applications. The stiffness, slip characteristics, and sealability of WOS-2 have been optimized to provide outstanding performance on multi-lane equipment.

Key Features

  • Outstanding opacity
  • Robust machinability
  • Heat seal range of approximately 115°F (63°C)
  • Average seal strengths over 480 g/in (480 g/2.5 cm)
  • Bright white appearance



  • Latin America
  • North America
  • South America


  • In Lamination Lap Sealable
  • Light Barrier


  • Biscuits/Cookie/Crackers
  • Bakery
  • Dairy Products
  • Ice Cream


  • HFFS Flexible Packaging
  • Pre-made Bags - Flexible Packaging
  • VFFS Flexible Packaging


  • White

Processing Method

  • Inner Web Adhesive Lamination
  • Solvent Flexographic Printing
  • Solvent Rotogravure Printing
  • Surface Print Unsupported
  • Water-based Flexographic Printing
  • Inner Web Extrusion Lamination


PropertyTypical ValueUnitTest Based On
Yield 39.5m²/kg Internal Method
Unit Weight 25.2g/m² Internal Method
Film Thickness 42µm Internal Method
Treated Surface 70 Internal Method
Light Transmission 24.0% Internal Method
Opacity 85% Internal Method
Tensile Strength at Break
510 mm/min pull rate, 50 mm jaw separation
MD 78.6Mpa Internal Method
TD 123Mpa Internal Method
Dimensional Stability
135°C / 275°F, 7 min
MD -4.5% Internal Method
TD -4.0% Internal Method
Crimp Seal Strength
99°C, 0.1 Mpa, 0.75 sec 480g/2.5 cm Internal Method
Crimp Seal (MST)
Untreated/Untreated 86°C Internal Method
Coefficient of Friction
Treated/Treated 0.36 Internal Method
Wetting Tension
Treated Surface 0.80receding cos θ Internal Method
Water Vapor Transmission Rate
38°C, 90% RH 4.8g/m²/24 hr Internal Method

Food Contact

Any further regulatory information on this product (i.e. Food Contact application, Presence/absence of substances, Reach, …) are accessible on the below link: https://www.jindalfilms.com/login-register-docmg/ 

Legal Statement

Contact your Jindal Films Customer Service Representative for potential food contact application compliance (e.g. FDA, EU, HPFB). This product is not intended for use in medical applications and should not be used in any such applications.

Processing Statement

  • WOS-2 contains a non-migratory slip package for excellent machinability and hot slip without compromising appearance or seals. Do not retreat.
  • WOS-2 should be primed for extrusion laminations or when laminating with high-barrier PVdC to ensure consistent adhesion.
  • WOS-2 may need to be primed when surface printing with water-based inks.
  • WOS-2 is lap sealable to coextruded films.


  1. Product may not be available in one or more countries in the identfied Availability regions. Please contact your Sales Representative for complete country availability.
  2. Tested at 38°C (100°F)/100%RH, then calculated to 90%RH with .90 multiplier.

Revision date

  • October 10, 2013

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