Process for preparing crosslapped film structures

Claim 1

A process for preparing at least one structure comprised of layered, nonbonded, crosslapped film from at least two layered, nonbonded film laminates produced from a single sheet of film whereby said film is continuously introduced into a winding zone containing therein a rotating means, accumulating said film in wrapped layers on the periphery of said rotating means until a desired thickness of layered film is established thereon, transferring said rotating means containing thereon said layered film to a zone wherein said layered film is removed from said rotating means by severing said layered film in a plane from the outer layer of said layered film to the periphery of said rotating means to thus produce at least one blanket of layered film, transferring said blanket of layered film to a zone and therein severing said blanket of layered film to thus produce said two layered nonbonded film laminates; said process further comprising a placement step, a first rotation step, and a second rotation step; said placement step comprising placing in a crosslapping zone and in the same plane a first of said film laminates having a first fastened edge, and a second of said film laminates having a second fastened edge such that said first fastened edge and said second fastened edge are adjacent and at an angle to each other; said first rotation step comprising rotating at least a first film ply of said first film laminate about said first fastened edge and placing said first film ply on said plane; said second rotation step comprising rotating at least a second film ply of said second film laminate about said second fastened edge and placing said second film ply on said plane overlapping said first film ply; said first and said second rotation steps being repeated in alternation until the desired number of film plies are placed in said structure.