자기기록매체용 폴리에스테르필름 및 자기기록테이프
    1.
    发明公开
    자기기록매체용 폴리에스테르필름 및 자기기록테이프 有权
    用于记录记录介质和磁记录带的聚酯膜

    公开(公告)号:KR1020010062643A

    公开(公告)日:2001-07-07

    申请号:KR1020000080541

    申请日:2000-12-22

    IPC分类号: G11B5/62

    摘要: PURPOSE: A polyester film for a magnetic recording medium is provided to allow production of digital videotapes with good electromagnetic conversion property and to reduce dropouts from any portion of the entire length of the film rolled. CONSTITUTION: The polyester film for magnetic recording medium formed by layering a polyester layer A and a polyester layer B is characterized in that the surface of the layer A side has 2-4 nm centerline average surface roughness (SRa value) and 10-40 nm ten-point average surface roughness (SRz value) and the layer B contains fine particles α having >= 50 nm and = 250 nm and

    摘要翻译: 目的:提供一种用于磁记录介质的聚酯薄膜,以便生产具有良好电磁转换特性的数字录像带,并且可以减少从卷膜整个长度的任何部分的脱落。 构成:通过层叠聚酯层A和聚酯层B而形成的磁记录介质用聚酯膜的特征在于,A层的表面具有2-4nm的中心线平均表面粗糙度(SRa值)和10〜40nm 十点平均表面粗糙度(SRz值),层B含有具有≥50nm且<250nm平均粒径的细颗粒α和具有> = 250nm和<500nm平均粒度的细颗粒β和细颗粒α 层B中的含量和细颗粒β含量分别为0.1-1.0重量%和0.01-0.1重量%。 通过在聚酯膜的A层的表面上设置强磁性金属薄膜来形成磁记录带。