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    • 4. 发明申请
    • POLYETHER ALIPHATIC URETHANE FILM FOR PROTECTION OF EXPOSED SURFACES
    • 用于保护暴露表面的聚乙烯尿素膜
    • WO2007044366A2
    • 2007-04-19
    • PCT/US2006/038718
    • 2006-10-03
    • WORTHEN INDUSTRIESWORTHEN, DouglasCOVEY, Robert M.,
    • WORTHEN, DouglasCOVEY, Robert M.,
    • B32B7/12
    • C08G18/4854C09J7/29C09J2201/162C09J2475/006Y10T428/2848
    • A film features a base layer including an aliphatic thermoplastic urethane having substantially planar upper and lower surfaces. The upper surface includes a substantially coextensive topcoat layer while the lower surface may feature either a substantially coextensive adhesive layer (optionally with a release sheet contacting the exposed surface of the adhesive layer) or alternatively a second, substantially coextensive topcoat layer. The base layer preferably has a cross-sectional thickness of between approximately 0.0254 mm (1 mil) to approximately 5.08 mm (200.0 mil). According to one embodiment, the base layer has a cross-sectional thickness of between 0.0762 mm (3.0 mil) to approximately 0.508 mm (20.0 mil), and is particularly useful as a protective film for the exterior surfaces of objects such as automobiles, boats, houses, and the like. Alternatively, the base layer has a cross-sectional thickness of 1.016 mm (40 mil) to 5.08 mm (200.0 mil) and is particularly useful for transparent panels/windows such as automotive windows and panels for enclosures.
    • 薄膜的特征在于包括具有基本平坦的上表面和下表面的脂族热塑性聚氨酯的基层。 上表面包括基本上共同延伸的顶涂层,而下表面可以具有基本上共同延伸的粘合剂层(任选地具有与粘合剂层的暴露表面接触的剥离片),或者可替代地第二基本共同延伸的顶涂层。 基底层的横截面厚度优选为约0.0254mm(1密耳)至约5.08mm(200.0密耳)。 根据一个实施方案,基底层的截面厚度为0.0762mm(3.0密耳)至约0.508mm(20.0密耳),并且特别可用作用于诸如汽车,船只等物体的外表面的保护膜 ,房屋等。 或者,基层具有1.016mm(40密耳)至5.08mm(200.0密耳)的横截面厚度,并且对于诸如汽车窗户和用于外壳的面板的透明板/窗特别有用。