A nonwoven, flexible sheet and process for making same consisting essentially of a comingled mixture of about 55 to about 75% by weight short fibers of poly(meta-phenylene isophthalamide) and about 25 to about 45% by weight fibrids of poly(meta-phenylene isophthalamide). The sheet has a basis weight of between about 10 and about 25 g/m.sup.2 and a thickness of between about 25 and about 45 microns and is impregnatable with resins or silicone oils.
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机译：一种非织造的柔性片材及其制备方法，其主要由以下混合物组成：混合的混合物，所述混合物由约55至约75重量％的聚（间亚苯基间苯二甲酰胺）短纤维和约25至约45重量％的聚（间苯二甲酰胺）的纤条体组成。亚苯基间苯二甲酰胺）。该片材的基重为约10至约25g / m 2，厚度为约25至约45微米，并且可以用树脂或硅油浸渍。
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