Natureflex™ Compostable Block Bottom Bags

Our popular Block Bottom SOS Bags are now available in NatureFlex™ film which is made from wood pulp sourced from managed locations and is GM free.

This film has excellent properties and is made from renewable, sustainable sources – an environmentally friendly choice. 

Natureflex™ is a very stable material and will not biodegrade or show any loss in mechanical properties on the shelf if it is stored correctly. Recommended storage conditions are away from local heat sources, out of direct sunlight, and ideally between 17 and 23 degrees Celsius. Biodegradation will only be initiated in a soil, compost or waste water environment where micro-organisms are present.

Customers should conduct their own tests to determine the optimum shelf life of the wrapped product. This will vary depending on the product requirements. However, the film manufacturer says that Natureflex ™ films have successfully been used to wrap products which have a shelf life of up to and even beyond 3 years.

Please note that the bases of these bags are glued rather than heat sealed. The panel which is glued to the base is NatureFlex™ but the glue is not compostable. Please note that if you are switching from Polypropylene to Natureflex™, it is important that you test the bags first as they are not as strong as Polypropylene bags. It is also important that any aggressive filling methods are tested by the customer before purchasing

The film manufacturer specifically recommends that the films should not be used in applications that would involve processing, treatment or storage at temperatures below −30°C (for example, blast freezing).