NatureFlex™ Folded Bottom Bags

Although many of our customers have been using our Bio-based film bags since 2007, for those new to the material, these bags are a renewable, plant-based alternative to conventional petro-chemical plastics. They are made from wood pulp and are biodegradable, supporting a sustainable packaging cycle.

Yes - they’re coated with a thin PVdC layer that makes them food safe and suitable for heat sealing. Perfect for items like snacks, wax melts, seeds, soaps, or cards with food contact.

You can use a heat sealer, or simply close them with tape or a label (our recycled self-adhesive labels work perfectly). Cellulose requires a much lower temperature than traditional plastic so we recommend going for a sealer that has an adjustable temperature setting. Starting at the lowest temp and working up to achieve the best results.

For food use, the film manufacturer recommends a shelf life of about 6 months at room temperature (17–23°C), away from humidity and direct sunlight. Stored properly, samples have lasted much longer. Bags are quite stable under normal retail conditions - avoid heat, moisture, or bright direct sunlight to maximise lifespan.

Popular applications include:

• Dried fruits
• Fudge / biscuits
• Rice, beans, pulses, pasta
• Chocolates, truffles, sweets
• Tea leaves / coffee beans
• Herbs and spices
• Potpourri / bath salts
• Bars of soap
• Wrapping prints or flowers

Cellulose bags are not waterproof and unsuitable for wet foods (drinks, yoghurt). They are not guaranteed acid-free, so we don’t recommend them for valuable prints or archival use. They are also not suitable for freezing/cold storage; the manufacturer does not guarantee performance below 0°C.

Yes! We can produce bags to your requirements, minimum order 5,000 pieces. For more information, contact us at sales@eco-craft.co.uk

Yes! For home composting, the film can start to break down within a few weeks, depending on ambient temperature. Industrial composting can achieve 90% biodegradation in less than 45 days, though the standard allows up to six months. To compost effectively at home, make sure micro-organisms, moisture, and oxygen are present, and turn the heap occasionally.

We are happy to supply samples! Simply click the 'Add Sample' button on the product you wish to try. We recommend trying samples as these products are non-returnable if opened, and exempt from our returns policy.