Conjugated filament nonwoven fabric and method of manufacturing the same
    33.
    发明授权
    Conjugated filament nonwoven fabric and method of manufacturing the same 失效
    共轭长丝无纺布及其制造方法

    公开(公告)号:US5800230A

    公开(公告)日:1998-09-01

    申请号:US925039

    申请日:1997-09-08

    摘要: A bulky and highly strong filament nonwoven fabric and method of manufacturing the filament nonwoven fabric which is made of conjugated filaments, whose intersections are melted and adhered, and which has a 15-35 cc/g specific volume and satisfies the following Formula (1) between strength and specific volume; Y.gtoreq.-1.25X+125 (1) wherein Y is a geometrical mean of vertical and horizontal strength per 5 cm wide and 1 g/cm.sup.2 nonwoven fabric �unit: g/(g/m.sup.2 .multidot.5 cm!; Y=(MD.times.CD).sup.1/2 where MD is vertical strength �unit: g/(g/m.sup.2 .multidot.5 cm! and CD is horizontal strength �unit: g/(g/m.sup.2 .multidot.5 cm!; and X=specific volume of a nonwoven fabric �unit: cc/g!; and wherein the conjugated filament is made of a low melting point polymer and a high melting point polymer with a difference in melting points of at least 15.degree. C., and has the low melting point polymer on at least one section of a filament surface and has crimps.

    摘要翻译: 一种体积大而高强度的长纤维无纺织物和由共轭长丝制成的长丝非织造织物的方法,其交点熔化并粘附,并且具有15-35cc / g比体积并满足下式(1) 强度和比体积之间的关系; Y> / = - 1.25X + 125(1)其中Y是每5厘米宽和1克/平方厘米无纺布的垂直和水平强度的几何平均值[单位:g /(g / m2×5cm ]; Y =(MDxCD)+ E,fra 1/2 + EE其中MD是垂直强度[单位:g /(g / m2×5cm),CD是水平强度[单位:g /(g / m2×5cm] X =非织造织物的比容积[单位:cc / g];其中,共轭长丝由低熔点聚合物和熔点差为15℃以上的高熔点聚合物构成, 在长丝表面的至少一个部分上具有低熔点聚合物并且具有卷曲。

    Filament threading in an air gun for producing nonwoven fabrics
    34.
    发明授权
    Filament threading in an air gun for producing nonwoven fabrics 失效
    用于生产非织造布的空气枪中的纤维线

    公开(公告)号:US5191680A

    公开(公告)日:1993-03-09

    申请号:US748806

    申请日:1991-08-22

    CPC分类号: D04H3/16

    摘要: An air gun for producing nonwoven fabrics has an inlet, a carrier path and a compressed air blow port. The air gun receives filaments spun from high speed spinning nozzles and delivers them onto a screen belt to form a web. The inlet of the air gun receives the filament from the spinning nozzle. The carrier path then puts the filament on an air flow to deliver it while the compressed air blow port is open in the midst of the carrier path to an air inlet from a compressed air source. On a downstream side of the carrier path from the compressed air blow port an exhaust path is provided. When the filament is introduced into the inlet of the air gun, a part of the air flowing into the carrier path is discharged from this exhaust path. Because the exhaust path remains open during filament introduction, a negative pressure at the filament inlet increases thereby sucking the filaments into the inlet. The exhaust path can then be closed and the filaments will be drawn and delivered under constant traction.