Film structures for self locking nonwoven industrial textile

摘要

A profiled film structure, textiles comprising at least two layers of the structure, and methods of making the structure and textiles. Each film layer is profiled with regularly arranged protrusions, separated by planar land areas. Portions of at least one side wall of the protrusions are slit to create apertures extending through the film and top members forming coplanar latching means extending over the apertures. When the upper surface of a first layer of the film is brought into contiguous relationship with the upper surface of a second layer of the film, and the protrusions of each of the respective layers are aligned between adjacent protrusions of the other layer, the latching means of each layer are received and retained within the apertures of the opposing layer, resulting in an efficiently assembled self-locking structure having selectable permeability for fluid flow through the structure.

主权项

1. An industrial textile comprising two layers of a film structure, each film structure comprising a film with:
(i) an upper surface and a lower surface; and (ii) a plurality of protrusions separated by land areas and defining a profile of the upper surface, wherein (a) each protrusion has a body comprising a top member having opposed first and second lateral edges and is supported by opposed first and second end walls; (b) at least one of the lateral edges cooperates with the end walls to define an aperture extending through the film from the upper surface to the lower surface; and (c) the top member comprises a coplanar latching means extending over the aperture, wherein when the upper surface of a first layer of the film is brought into contiguous relationship with the upper surface of a second layer of the film, and the protrusions of each of the respective layers are aligned between adjacent protrusions of the other layer, the latching means of the first layer are received and retained within the apertures of the second layer, and the latching means of the second layer are received and retained within the apertures of the first layer.