US Patent 8006386 Method of making a one-piece sidewall liner with logistic slot

A method of forming an inner wall of a sidewall configuration of a trailer is provided which comprises the steps of: (a) providing a plurality of posts, each post having slots provided therethrough; (b) providing at least one pre-configured punching die; (c) providing a one-piece continuous liner; (d) securing the one-piece continuous liner to the plurality of posts; and (e) punching slots through the one-piece continuous liner with the at least one pre-configured punching die. In a first embodiment of the method, step (d) is performed before step (e). In a second embodiment of the method, step (e) is performed before step (d).