Recyclable ultra-high barrier paper for high-speed packaging lines

Overview

Nfinite Nanotech introduces an advanced recyclable ultra-high barrier paper designed for high-speed packaging lines. Utilizing AP-SALD (spatial atomic layer deposition), this innovative coating process applies ultrathin metal oxide layers to paper, achieving remarkable barrier properties. The paper solution is capable of achieving a WVTR (water vapor transmission rate) of less than 0.2 g/m²/day at 38 °C and 90% relative humidity, and an OTR (oxygen transmission rate) of less than 0.5 cc/m²/day at 23 °C and 50% relative humidity. This positions paper as a competitive alternative to metallized plastics, providing high barrier properties while being recyclable.

Technical specifications

• Coating Process: AP-SALD, a non-vacuum roll-to-roll process for ultrathin conformal metal oxide coatings
• Barrier Properties: WVTR < 0.2 g/m²/day, OTR < 0.5 cc/m²/day
• Material Composition: >85% fiber content with water-based sealants and OPVs
• Formats: Available in A4 sheets and 12" reels, with 36" reels in development
• Applications: Suitable for FFS/VFFS lines, capable of forming into stick packs, sachets, flow wraps, and pouches
• Recyclability: High recyclability due to water-based polymer coatings

Technology readiness level

Currently at TRL 4, the technology has been validated through trials with various coating techniques and is ready for further testing in FFS/VFFS lines to confirm sealability and machinability. Ongoing developments focus on enhancing barrier integrity and flex-crack resistance during mechanical stress in forming processes.