Liner for floppy disc jacket and its manufacture
专利汇可以提供Liner for floppy disc jacket and its manufacture专利检索，专利查询，专利分析的服务。并且PURPOSE: To obtain a liner whose strength in cross direction is improved by overlapping specific staple fiber webs made mainly of rayon onto partially molten thermoplastic filament nonwoven fabric jetting a high-speed water flow from the upper part, obtaining laminated nonwoven fabric with a specific weight per area with emboss processing.
CONSTITUTION: A nonwoven made of thermoplastic filament such as polyester or polypropylene is used, where each molten part existing at many positions has an area of ≤3mm
2 , the total area is ≤10% of the total nonwoven clock and the METSUKE is 8W25g/m
2 . On the nonwoven clock, 70W97wt% of rayon, 3W30wt% of resin such as polyethylene or polyester with a low melting point as 90W180°C (each staple fiber) form webs having weight per area of 8W30g/m
2 while being overlapped, high-speed water flow having pressure of 15kg/cm
2 is jetted upward to cross-link staple fibers to the filament nonwoven fabric. Thus, the liner with 30W65wt% of filament and 70W35wt% of staple fiber, of 25W35g/m
2 , nearly unity of the ratio of strength in MD and CD directions is obtained, which is suitable for a jacket liner with improved strength in the CD direction.
COPYRIGHT: (C)1986,JPO&Japio，下面是Liner for floppy disc jacket and its manufacture专利的具体信息内容。
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