Extrusion coating process for making protective and decorative films
    1.
    发明授权
    Extrusion coating process for making protective and decorative films 失效
    用于制造防护和装饰膜的挤出涂布工艺

    公开(公告)号:US06336988B1

    公开(公告)日:2002-01-08

    申请号:US08793836

    申请日:1997-08-06

    IPC分类号: B49L4122

    摘要: A process for making a protective and decorative surfacing film comprises extrusion coating a solid polymeric material from an extruder die to form an optically clear first layer of uniform film thickness on a smooth surface of a carrier sheet traveling continuously past the extruder die opening. The extrusion coated first layer is immediately cooled on the carrier sheet to harden it, followed by applying a pigmented second layer in thin film form to the first layer to form a composite paint coat in which the first and second layers are bonded to each other. The composite paint coat is then transferred to a supportive backing sheet or substrate panel, after which the carrier sheet is separated from the paint coat, to expose the outer surface of the first layer as a high gloss surface with a high distinctness-of-image, providing a transparent protective outer coat for the underlying pigmented second layer. The pigmented second layer can be solvent cast and dried or extruded and hardened as a separate coating on the extrusion coated first layer. Alternatively, the second layer can be formed with the first layer as a coextrusion which is extrusion coated onto the smooth surface of the release coated carrier sheet that travels past the extruder die.

    摘要翻译: 制造保护性和装饰性表面膜的方法包括从挤出机模头挤出涂覆固体聚合物材料,以在连续通过挤出机模头开口的载体片材的光滑表面上形成均匀膜厚度的光学透明的第一层。 将挤出涂布的第一层立即冷却在载体片上以使其硬化,然后将着色的第二层以薄膜形式施加到第一层以形成其中第一和第二层彼此结合的复合涂料。 然后将复合涂料转移到支撑背衬片或基底板上,然后将载体片从涂料层分离,以将第一层的外表面暴露为高光泽表面,具有高的不均匀的图像 为底层着色的第二层提供透明的保护性外涂层。 着色的第二层可以是在挤出涂布的第一层上溶剂浇铸并干燥或挤出和硬化,作为单独的涂层。 或者,第二层可以形成有作为共挤出的第一层,其被挤出涂覆到穿过挤出机模头的脱模涂层载体片材的光滑表面上。