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    • 8. 发明授权
    • Heat treatment of thin polymer films
    • 薄聚合物薄膜的热处理
    • US08691132B2
    • 2014-04-08
    • US12543403
    • 2009-08-18
    • Miroslav Planeta
    • Miroslav Planeta
    • B29C59/18
    • B29C55/06B29C59/04B29C59/18B29C61/02
    • Stretch film is treated by passing a web of tackifier-containing, unbloomed thin polymer film through a heater so that the web is heated to a temperature sufficient to cause tackifier bloom prior to the web reaching a next stage in an in-line process. Also, a pattern can be applied to a thin polymer film. An oriented web of thin polymer film is passed across at least one heated roller having the pattern engraved thereon to define face regions and relief regions collectively conforming to the pattern. As the web contacts each roller surface, portions of the web positioned over the relief regions receive less heat than portions of the web positioned over the face regions, thereby causing the respective portions of the web to undergo differential, heat-induced shrinkage which imparts the pattern to the thin polymer film.
    • 通过使带有增粘剂的未膨胀的薄聚合物膜通过加热器通过网来处理拉伸薄膜,使得将卷材加热到足以在卷材在直线加工过程中到达下一阶段之前使增粘剂开花的温度。 此外,图案可以应用于薄聚合物膜。 将薄的聚合物薄膜定向的薄片穿过至少一个加热的辊子,该加热辊子具有刻在其上的图案,以限定共同符合图案的面部区域和浮雕区域。 当幅材接触每个辊表面时,位于浮雕区域上方的幅材的部分接收比位于表面区域上的幅材的部分更少的热量,从而导致幅材的相应部分发生差别的热诱导收缩, 图案与薄聚合物膜。