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Method and apparatus for drawing frames of nonwoven fabric webs oriented using visible from animal, polymeric material
Method and apparatus for drawing frames of nonwoven fabric webs oriented using visible from animal, polymeric material
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机译:用于拉制从动物,聚合物材料中可见的取向的无纺布网幅的方法和设备
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摘要
There is disclosed a novel process and product produced thereby for the selective stretching of incremental portions of a substrate of a synthetic thermoplastic material selected from the group consisting of a thermoplastic orientable polymer or a blend of a thermoplastic orientable copolymer in which there is admixed an incompatible second phase selected the group consisting of an incompatible polymer or inorganic material. The substrate is stretched in grooved roller pairs by controlling the velocity of introduction of the substrate to maintain the velocity substantially identical to the surface velocity of the roller pair. Stretching of the blends produce an opaque, low density porous sheet.
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