Filter material for smoking article

摘要: A filter material, particularly for tobacco-smoke filters, comprises fibrillated polyolefin sheet having main generally longitudinally-extending strands interconnected by interconnecting and a substantial number of free ends formed severing and/or which would otherwise have constituted strands, the thickness in range 5 microns to 25 at least 40 percent (preferably 70 percent) width not greater than their thickness.