| 摘要 |
PURPOSE:To manufacture highly flexible foam material useful for clothings and sporting goods, etc. simply and economically at a high productivity by such an arrangement wherein more than 2 kinds of oelfine family resin of which elongation and tensile strength differ from each other are mixed and melted and caused to foam and after that said material is elongated. CONSTITUTION:More than 2 kinds of olefine family resin (polymer of olefine family monomer or copolymer primarily composed of monomers) of which elongation or/and tensile strength differ from other preferably by more than 20%, more preferably by more than 50% are mixed (preferably, 10-90wt% of one kind of olefine family resin are included) melted and caused to foam (preferably by a method whereby olefine family resin is bridged) and the material thus obtained is elongated preferably by more than 1.5 times by pinch rolls, etc. |
