Our vacuum sealers are optimised for sealing polyethylene and polyamide films, but polypropylene has a similar melting temperature. Re-sealing works with most plastic bags. Of course, it depends on the nature of the bag, but it is always worth a try. Sometimes the material is too thin so that holes appear when resealing, but normally our vacuum sealer is perfect for resealing all types of plastic bags.
The manual sealing function makes it possible to seal a bag without vacuuming. Of course, vacuuming is also possible, but conventional packaging materials (without the necessary surface structure) do not create a vacuum.