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Toppyl is a Polybutene-1 based seal peel solution which could be used in most of the film technology. The broad range of Toppyl grades offer a peelable seal to PE substrates or to seal and peel against itself, to PP substrates or to seal and peel against itself, and also for no polyolefin substrates likes PS and PET. They could be used in a dry blend or to completely replace the sealing layer in a coextruded film. They are designed to provide a constant, easy-opening force over a wide sealing temperature window and is readily processable on conventional equipment in both mono and co-extruded structures