Biodegradable filter material and method for its manufacture
    1.
    发明授权
    Biodegradable filter material and method for its manufacture 失效
    生物降解过滤材料及其制造方法

    公开(公告)号:US6062228A

    公开(公告)日:2000-05-16

    申请号:US43993

    申请日:1998-03-30

    CPC分类号: A24D3/068 A24D3/08 Y10S264/48

    摘要: There is provided a biodegradable filter tow or filter material from renewable raw materials for the use as a tobacco smoke filter element of cigarettes, cigars or pipes as well as a method for preparing it, wherein fibers, films or foams prepared in an extrusion method from biopolymers based on thermoplastic starch or its polymer compositions are processed to the filter tow or filter material according to the present invention.The advantages of this invention reside in the use of mainly renewable raw materials, a fast and complete biodegradability of the natural biopolymer filter material, a pollutant-reducing flavor-increasing filtering effect and an economically favorable preparation method.

    摘要翻译: PCT No.PCT / EP96 / 04234 371日期1998年3月30日 102(e)1998年3月30日PCT PCT 1996年9月27日PCT公布。 出版物WO97 / 1252800 日期1997年04月10日提供了可再生原料的可生物降解的过滤丝束或过滤材料,用作香烟,雪茄或管道的烟草烟雾过滤元件以及其制备方法,其中制备纤维,膜或泡沫 在基于热塑性淀粉的生物聚合物或其聚合物组合物的挤出方法中,加工成根据本发明的过滤丝束或过滤材料。 本发明的优点在于主要可再生原料的使用,天然生物聚合物过滤材料的快速且完整的生物降解性,减少污染物的增加风味的过滤效果和经济上有利的制备方法。

    Process for the manufacture of mineral fibre compositions
    2.
    发明授权
    Process for the manufacture of mineral fibre compositions 失效
    矿物纤维组合物的制造方法

    公开(公告)号:US5006140A

    公开(公告)日:1991-04-09

    申请号:US451959

    申请日:1989-12-14

    IPC分类号: C04B38/00 C03C25/32 C08B31/00

    CPC分类号: C08B31/00 C03C25/321

    摘要: A process for the production of a glass or other mineral fibre composition in which glass or other mineral fibre is melted, the molten glass or mineral is forced through a plurality of openings to produce fibres, the hot fibres are sprayed with a water disperion of a binder and the fibres are dried at an elevated temperature, the binder comprising a gelatinized starch sulphamate product and a hydrophobic agent such as a silicone. The gelatinized starch sulphamate may be preformed by reacting a starch with a sulphamate salt or may be formed in situ by spraying onto the hot fibres a water dispersion of pregelatinized starch and a sulphamate salt. In this latter case part of the pregelatinized starch may be replaced by native starch.