Delfort has announced its new heat and cold-sealable barrier paper designed to protect foods such as ice cream, chocolates and sweets and provide an alternative to traditional materials.
The thinbarrier 302 specialty paper is said to have moisture, oxygen, aroma and fat resistance barrier properties, with the cold sealing solution developed in partnership with Henkel. Paired with compatible cold seal coatings, Delfort says the paper provides robust protection against external elements to ensure the taste, appearance and texture of foods.
Apparently, the new paper has flex-crack resistance that withstands the demands of handling and transportation, free from any intentionally added PFAS and recyclable according to the CEPI method. In addition, the release coating on top of the cold seal of the paper prevents the paper from sticking to itself during storage or processing, designed to ensure smooth operations on packaging lines.
Delfort states the thinbarrier 302 has an MVTR of less than 10, measured at 23°C and 85% humidity, aiming to stop moisture from penetrating the packaging and prevent freezer burn that can degrade texture and flavour in items like ice cream bars. The company says the paper also restricts oxygen from entering the package with an OTR value of less than 30, seeking to preserve the flavour and natural aroma of chocolates, nuts and non-frozen foods.
Towards the end of 2024, it was revealed that Mondi’s thinnest barrier paper would be converted into bread bags by Welton, Bibby & Baron, designed to be recycled at kerbside once emptied. The paper is said to provide the necessary strength for higher filling weights while protecting foods against water vapour, grease, and moisture.
Huhtamaki was a finalist in last year’s Sustainability Awards with its OmniLock Ultra Paper, a fully recyclable, heat-sealable barrier paper designed to replace non-recyclable multi-layer laminates. It reportedly ensures high sustainability standards with a paper content sourced from FSC-certified paper fibre and a recallability yield of about 80%.
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