Intermediate softening point resin-based hot melt PSAs
    1.
    发明授权
    Intermediate softening point resin-based hot melt PSAs 失效
    中间体软化点树脂基热熔体PSA

    公开(公告)号:US06214935B1

    公开(公告)日:2001-04-10

    申请号:US09115878

    申请日:1998-07-15

    IPC分类号: C08L5302

    摘要: An improved hot-melt pressure-sensitive adhesive (HMPSA) composition contains an elastomeric component, such as a blend of SIS and SB block copolymers, and a tackifying component comprising one or more intermediate softening point resins (ISPRs) having a ring and ball softening point of from 35 to 60° C. The improved adhesive compositions are characterized by reduced volatility, less bleed and staining tendencies, and improved overall adhesive performance. The invention also provides improved label constructions in which a release liner is coated with an HMPSA composition and laminated to a flexible facestock. Notably, even when low basis weight paper facestocks are used, the construction can be converted at high speeds.

    摘要翻译: 改进的热熔压敏粘合剂(HMPSA)组合物包含弹性体组分,例如SIS和SB嵌段共聚物的共混物,以及包含一种或多种具有环和球软化的中间软化点树脂(ISPR)的增粘组分 35℃至60℃。改进的粘合剂组合物的特征在于挥发性降低,渗色和染色趋势较少,并且改善了整体粘合性能。 本发明还提供改进的标签结构,其中剥离衬垫涂覆有HMPSA组合物并层压到柔性面材上。 值得注意的是,即使使用低基重的纸面,也可以高速转换。