An automated sequenced food article tray loading method and apparatus for a high speed slicing machine where food articles can be loaded sequentially into designated and separated lanes of a lift tray and automatically sequentially assume a preload condition. Other embodiments are disclosed. is added per 1 kg of a PTFE fine powder, this compound is processed into a tape shape and elongated to obtain a PTFE porous film, and an air permeable support member is heat laminated to at least one surface of the PTFE porous film.