High performance elastic composite materials made from high molecular weight thermoplastic triblock elastomers
    4.
    发明授权
    High performance elastic composite materials made from high molecular weight thermoplastic triblock elastomers 有权
    高性能弹性复合材料由高分子量热塑性三嵌段弹性体制成

    公开(公告)号:US06323389B1

    公开(公告)日:2001-11-27

    申请号:US09165909

    申请日:1998-10-02

    IPC分类号: A61F1315

    摘要: The present invention comprises a continuous feed spun bonded laminate having improved elastic properties measured at body temperature. The laminate comprises at least one first and second nonelastic layers between which is sandwiched at least one elastic layer, the elastic layer being comprised of a triblock polystyrene-poly(ethylene/propylene)-polystyrene (“SEPS”) copolymer having a number average molecular weight of about 81,000 g/mol. The weight percent of styrene is approximately 18% and the weight percent of ethylene/propylene is approximately 82%. The molecular weight increase in the EP block, while holding the molecular weight of the styrene block constant, increases the entanglement density, polymer chain persistence length and the relaxation time. The resulting laminate load decay rate and load loss measurements over a period of 12 hours at body temperature showed marked improvement over known CFSBL product. The laminate is particularly useful as side panel material in training pants because of the resistance to sagging at body temperature.

    摘要翻译: 本发明包括在体温下测量的具有改进的弹性的连续进料纺粘层压板。 层压体包括至少一个第一和第二非弹性层,在该层之间夹有至少一个弹性层,该弹性层由具有数均分子量的三嵌段聚苯乙烯 - 聚(乙烯/丙烯) - 聚苯乙烯(“SEPS”)共聚物 重量约81,000g / mol。 苯乙烯的重量百分数约为18%,乙烯/丙烯的重量百分比约为82%。 EP模块中的分子量增加同时保持苯乙烯嵌段的分子量不变,增加了缠结密度,聚合物链持久长度和弛豫时间。 在体温下12小时内产生的层压装载衰减率和负荷损失测量结果显示,已知的CFSBL产品显着改善。 层压板特别适用于训练裤子中的侧板材料,因为其耐温度下降。