Polypropylene Twine - Polytwine„¢ From Nutscene ® - Rot proof twine. Polytwine or polypropylene twine has very good resistance to abrasion, rot, water, mildew and oil. It is therefore ideal for baling, garden work and agricultural purposes. Polytwine or polypropylene twine was invented in the 20th Century and is produced by the chemical industry. As this product has been manufactured by man, special care and consideration has to be taken at point of disposal. Be aware that this product is not compostable and should be taken to your local authority's recycling centre for appropriate polypropylene waste management to take place.