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    • 5. 发明申请
    • SELF-COHERING, CONTINUOUS FILAMENT NON-WOVEN WEBS
    • 自粘,连续纤维非织造布
    • WO99017817A1
    • 1999-04-15
    • PCT/US1998/020411
    • 1998-09-29
    • A61L27/00A61L31/06A61L31/14D04H3/03D04H3/14D04H3/16A61L31/00
    • D04H3/03A61L31/06A61L31/14D01D5/0985D01F6/84D04H3/011D04H3/077D04H3/14Y10T428/1372Y10T428/1376Y10T428/249928C08L67/04
    • A web of continuous filaments which are made of at least one semi-crystalline polymeric component covalently bonded as a linear block copolymer with or blended with one or more semi-crystalline or amorphous polymeric components. The filaments are intermingled together to form a porous web of filaments, the filaments having multiple contact points with each other within the web. The filaments are bonded at the contact points without requisite for added adhesive binders, adjuncts or post extrusion melt processing. The web may be bioresorbable. The web may also be provided in forms with relatively high cohesive shear strength. The polymeric components of the filaments exist, at least temporarily, in a homogenous substantially phase miscible uncrystallized state. If preserved in the homogenous substantially phase miscible uncrystallized state, the object can then be manipulated into a distinct desirable molded shape and then subsequently set or crystallized to retain the desired form particularly suitable for a specific use or application.
    • 由至少一种半结晶聚合物组分制成的连续长丝纤维网,其共价键合为线性嵌段共聚物或与一种或多种半结晶或无定形聚合物组分共混。 将细丝混合在一起以形成多孔纤维网,该丝在网内彼此具有多个接触点。 长丝在接触点处粘合,无需添加粘合剂粘合剂,助剂或后挤出熔融加工。 网可以是生物可再吸收的。 纤维网也可以具有相对高的内聚剪切强度的形式提供。 长丝的聚合物组分至少暂时存在于均匀的基本相混合的未结晶状态。 如果保持在均匀的基本相混合的未结晶状态,则可以将物体操作成不同的期望的模制形状,然后随后设定或结晶以保持特别适用于特定用途或应用的所需形式。
    • 8. 发明申请
    • MELT-BLOWN NON WOVEN FABRIC, PROCESS FOR PRODUCING SAME AND THE USES THEREOF
    • 熔喷摇粒绒,方法及其及其用途
    • WO1997033026A1
    • 1997-09-12
    • PCT/EP1996005686
    • 1996-12-18
    • RHONE-POULENC RHODIA AKTIENGESELLSCHAFTMAURER, GünterRUSTEMEYER, PaulTEUFEL, Eberhard
    • RHONE-POULENC RHODIA AKTIENGESELLSCHAFT
    • D04H01/56
    • D04H3/013A24D3/068A24D3/10D04H1/425D04H3/077D04H3/16Y10T428/298Y10T442/60Y10T442/607Y10T442/668Y10T442/68
    • The disclosure relates to a melt-blown non-woven fabric based on cellulose esters, with fibres of mean diameter less than about 10 mu m. The fabric in question is characterised in that it contains 0-10 wt % extractable softener, has a reflection factor (R INFINITY ) determined according to DIN 53 145 Part 1 (1992) of more than 60 % and the cellulose ester has a degree of substitution DS of about 1.5-3.0. The softener is preferably water-extractable. Triacetin is especially suitable as the softener. A melt-blown non-woven fabric of this type is produced with the cellulose ester as follows: a cellulose ester, in particular cellulose acetate, with a degree of substitution DS of about 1.5-3.0, in particular 1.7-2.7, is mixed with a softener in a weight ratio of about 2:1 to 1:4 and simultaneously heated and melted. The mixture of softener and cellulose ester has a melting index MFI (210/2.16) according to DIN 53 735 of about 400 to 5g/10 min, in particular 300 to 50 g/10 min. The melt is worked in a melt-blown spinning device into a melt-blown non-woven fabric and the softener is then extracted with a softener solvent to leave a proportion of 0-10 wt.%. The melt-blown non-woven fabric is especially suitable as a filter material.
    • 描述了纤维素酯的具有小于约10微米的平均纤维直径的纤维的基础上的熔喷非织造布。 的超过约60%,纤维素酯,这是其特征在于,它包含一个可提取增塑剂,反射系数(R INFINITY)的约0至10重量%,根据DIN 53 145第1部分(1992),具有的取代度DS的 从约1.5至3.0具有。 优选地,增塑剂是水可提取的。 三醋精是特别适合作为增塑剂。 制备时,这样的熔喷非织造织物,所述纤维素酯的纤维素酯,特别是乙酸纤维素,约1.5至3.0的取代度DS,特别是从约1.7〜2.7,与在增塑剂 1至1:约2质量比4在加热下混合,然后被转换成熔体,其特征在于,具有熔体指数MFI(210 / 2.16)的增塑剂和纤维素酯的混合物按约400至5g的根据DIN 53735/10分钟 ,尤其300至50克/ 10分钟,其处理在熔喷纺丝熔体指熔喷幅材,然后将增塑剂的约0至10%的水平按重量计为溶剂 增塑剂提取。 将所得到的熔喷非织造织物特别适合用作过滤材料。