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Metallyte™ 28UBWES

Product Description

Metallyte 28UBWES is a multi-layer, cavitated, white OPP film with an enhanced sealant to allow sealing through contamination. This film has an exceptional barrier to gases, flavors, and moisture. It is metallized on one side with a proprietary sealant layer on the other. 28UBWES is lap sealable to other coextruded OPP films. 

28UBWES is used as the inner web for adhesive and extrusion laminations, where superior moisture and oxygen barriers are required. 28UBWES provides an excellent light barrier and a brilliant foil appearance. It is designed to provide strong, leak-free seals for flat pouches and has been designed specifically to replace foil and a sealant web in those applications.

Key Features

  • Substantial improvement in protection to the migration of mineral oils compared to standard uncoated OPP and Blown PE films1
  • Significant mineral oils contamination protection period of more than 2 years2
  • Very low MST, broad seal range
  • Exceptional seal strength
  • Outstanding opacity
  • Outstanding moisture and oxygen barrier
  • Excellent aroma and flavor barrier
  • Excellent flex-crack resistance
  • Excellent hot tack 



  • Latin America
  • North America
  • South America
  • Africa & Middle East
  • Asia Pacific
  • Europe


  • Flavor & Aroma Barrier
  • In Lamination Lap Sealable
  • Gas Barrier
  • Moisture Barrier
  • Oxygen Barrier
  • Light Barrier


  • Dry Foods and Beverage Powders


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


  • Metallized-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 48.4m²/kg Internal Method
Unit Weight 20.7g/m² Internal Method
Film Thickness 28µ Internal Method
Optical Density 3.0 Internal Method
Tensile Strength at Break
510 mm/min pull rate, 50 mm jaw separation
MD 82.7Mpa Internal Method
TD 172Mpa Internal Method
Dimensional Stability 135°C / 275°F, 7 min
MD -5.0% Internal Method
TD -3.0% Internal Method
Crimp Seal Strength
99°C, 0.1 Mpa, 0.75 sec 690g/2.5 cm Internal Method
127°C, 0.1 Mpa, 0.75 sec 1500g/2.5 cm Internal Method
Crimp Seal MST (Minimum Seal Temperature)
Untreated/Untreated 79°C Internal Method
Water Vapor Transmission Rate
38°C, 90% RH 0.1g/m²/24 hr Internal Method
Oxygen Transmission Rate
23°C, 0% RH 0.1cm³/m²/24 hr Internal Method

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

  • In-line treatment of the metallized side is required for success on all converting applications. Consult Jindal Films Technical Service for details.


  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. Sample dimensions and conditioning vary due to differences in equipment design.
  3. Optical density value represents only the metal layer on the film.

Revision date

  • November 19, 2018

Typical properties: these are not to be construed as specifications.

© 2018 Jindal Films. Jindal Films. Jindal Films, the Jindal Films’ logo, and other product or service names used herein are trademarks of Jindal Films, unless indicated otherwise. You may not upload, display, publish, license, post, point to, frame, transmit or distribute either this document or its information, whether in whole or in part, without Jindal Films’ prior written authorization. To the extent Jindal Films provides prior written authorization, the user may use the document or its information only if the document is unaltered and complete, including all of its headers, footers, disclaimers and other information. Any data included herein may be based upon: analyses of representative samples and not the actual product shipped, typical values, or otherwise. The information in this document relates only to the named product or materials when not in combination with any other product or materials. We base the information on data believed to be reliable, but we do not represent, warrant, or otherwise guarantee the accuracy, reliability, or completeness of this information; nor do we warrant, expressly or impliedly, the merchantability, fitness for a particular purpose, freedom from patent infringement, or suitability of the products, materials or processes described. The user is solely responsible for all determinations regarding any use of material or product and any process in its territories of interest. We expressly disclaim liability for any loss, damage or injury directly or indirectly suffered or incurred as a result of, or related to, anyone using or relying on any of the information in this document. This document is not an endorsement of any non-Jindal Films’ product or process, and we expressly disclaim any contrary implication. The terms “we,” “our,” “Jindal Films” and “Jindal” are each used for convenience, and may include Films Americas LLC, Jindal Films Americas LLC, Films Europe S.ár.l., Jindal Films Virton SPRL, Jindal Films India Ltd., or any companies affiliated with them in the production and sale of film products. There are a number of such affiliated companies, some with names including “Jindal” or “Films” and some not. Neither these terms and conditions, nor anything else in this document, is intended to override or supersede the legal separateness of those affiliated companies and responsibility for local action and accountability remains with them.