hydrolisis resistance for retort packaging

RetortABLE PACKAGING POLYAMIDE SOLUTIONS

Retort packaging demands high-performance polymers capable of withstanding extreme conditions of temperature, pressure, and humidity without compromising safety or performance. These multilayer flexible films, used in pouches, vacuum bags, and tray lids, must endure temperatures between 116 °C and 121 °C under pressure, ensuring reliable protection of the packaged content.

The retort process plays a critical role in eliminating harmful microorganisms, extending shelf life while preserving nutritional value. To meet these challenges, NUREL has developed a range of high-viscosity polyamides and copolyamides that offer outstanding hydrolysis resistance and retain their mechanical integrity after sterilization and retort cycles.

These materials are specifically engineered for demanding applications such as ready meals, baby food, pet food, and sauces, where long-term durability, barrier functionality, and thermal stability are essential.

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Our Range of Hydrolysis-Resistant & Retortable Polyamides

STANDARD POLYAMIDE 6

PROMYDE® BF40R

PROMYDE® BF40R is a high-viscosity PA6 designed for retort applications, offering outstanding hydrolysis resistance.
Its robust formulation makes it the ideal choice for multilayer films requiring high resistance to thermal and mechanical stress under high pressure and humidity.
Specially recommended for asymmetric structures where PA6 is exposed to moisture during thermal sterilization.

ADVANCED COPOLYAMIDES

PROMYDE® BF940R – NO CURLING AND EXCELLENT BRIGHTNESS

PROMYDE® BF940R is a hydrolysis-resistant, high-viscosity copolyamide developed for retortable packaging solutions.
It combines exceptional retort durability with superior optical properties, delivering extreme transparency, high gloss, and no curling—even in complex laminates.
Its outstanding processability and thermoformability make it an ideal choice for high-performance retort structures

PROMYDE® BF540R – FOR DEEP THERMOFORMING

PROMYDE® BF540R is a high-viscosity copolyamide engineered for retort and pasteurization processes.
It offers excellent dimensional stability and mechanical performance after thermal treatment, making it suitable for deep-draw thermoformed trays and multilayer structures. A robust option for applications requiring reliable strength under pressure.