Method of manufacturing a laminated fibro-filamentary or film structure which is partly delaminated and products produced by said method
OwnerOle-Bendt Rasmusseninventor
Life of this patent
Estimating the term…
Loading patent…
OwnerOle-Bendt Rasmusseninventor
Estimating the term…
Method of producing fibrous or sheet structure comprising melt coextruding a laminated structure comprising an assembly of two or more layers from polymeric material laminated together in intimate adherence with one another and simultaneously or subsequently so treating the assembly as to produce a regular pattern of areas of strong bonding separated by areas of weak or no bonding between the layers of the assembly. A sheet or fibrous product comprising an assembly of three or more ribbon-like elements of polymeric material with adjacent elements bonded in face-to-face relationship at regular intervals along their length. A sheet of fibrous product comprising three or more layers of polymeric material bonded to one another into an assembly at regular intervals along the length of the assembly and in which the or at least one of the inner layers of the assembly has a shorter surface length between adjacent bonds than the outer layers of the assembly, the outer layers thus having the form of loops.
An extruded product comprising an assembly of a plurality of thin coextruded generally parallel discrete ribbon like strips arranged in superposed fashion in a sandwich-like stack, at least one of the strips in said assembly having a shrinkability different from at least one other of said strips, said strips each having flat opposite faces with the mutually facing faces of each adjacent pair of said plurality of strips being bonded together in contacting face to face relation over selected areas of such faces and substantially unbonded in the remaining areas of said faces, said selectively bonded and unbonded areas occurring at intervals along the length of said contacting faces in a predetermined pattern.
An extruded filamentary product comprising an assembly of a plurality of coextruded thin parallel ribbon-like strips arranged in superposed fashion in a sandwich-like stack, said strips each having opposite flat faces with mutually facing faces being bonded together in contacting face to face relation over selected lengthwise sections of such faces and substantially unbonded in the remaining sections of such faces, said selectively bonded and unbonded sections occurring at selected intervals along the assembly length in a predetermined pattern, at least one of the strips of said assembly being shrunk in its unbonded sections to a shorter length than at least one other strip in said regions whereby each such other strip in said unbonded regions is expanded laterally of each such shortened strip.
Dependencies are inferred from the claim text.