公开(公告)号：US20150183178A1

公开(公告)日：2015-07-02

申请号：US14144097

申请日：2013-12-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. Lindquist ,  Stephen A. Johnson ,  Onur Sinan Yordem ,  Myron K. Jordan

IPC: B32B1/00 ,  B32B27/08

CPC classification number: B32B1/00 ,  B32B3/02 ,  B32B7/02 ,  B32B7/06 ,  B32B27/08 ,  B32B27/302 ,  B32B27/36 ,  B32B2250/05 ,  B32B2250/24 ,  B32B2250/42 ,  B32B2270/00 ,  B32B2307/40 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2307/514 ,  B32B2307/732 ,  B32B2307/738 ,  B32B2307/748 ,  B32B2553/00 ,  Y10T428/24322 ,  Y10T428/24628

Abstract: Multilayered polymer films are configured so that successive layer packets can be delaminated in continuous sheet form from the remaining film. The films are compatible with known coextrusion manufacturing techniques, and can be made without adhesive layers between layer packets. The layer packets are individually peelable from the remainder of the film. Combinations of polymer compositions are used to allow non-adhesive polymer layers to be combined such that irreversible delamination of the film is likely to occur at interfaces between layer packet pairs. The films are post-formed, e.g. using heat and pressure, to deform the film from an initial flat or limp condition into a contoured shape that is self-supporting. The contoured shape may comprise regions of simple and/or complex curvature. Despite the permanent contoured shape, individual packets can still be successively peeled away to expose a fresh surface of the next layer packet, having the same contoured shape.

Abstract translation: 多层聚合物膜被配置成使得连续的层包可以从剩余的膜以连续的片状形式分层。 这些膜与已知的共挤出制造技术相兼容，并且可以在层包之间没有粘合剂层的情况下制成。 层包可以单独地从胶片的其余部分剥离。 聚合物组合物的组合用于允许非粘合聚合物层组合，使得在层包对之间的界面处可能发生膜的不可逆分层。 膜是后成型的，例如 使用热和压力使膜从初始平坦或跛行状态变形成自支撑的轮廓形状。 轮廓形状可以包括简单和/或复杂曲率的区域。 尽管具有永久的轮廓形状，但是单个分组仍然可以被连续地剥离以暴露具有相同轮廓形状的下一层分组的新表面。