Title: Method of manufacturing a laminated fibro-filamentary or film structure which is partly delaminated and products produced by said method

Abstract: 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.

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Inventors: Rasmussen, Ole-Bendt

Application Number: 752886
Filing Date: 1976-12-21
Publication_date: 1979-03-06
Assignee:
Primary Class(es): 428/116 428/152, 428/166, 428/172, 428/178, 428/181, 428/198, 428/212, 428/339, 428/369, 428/373, 428/913
Other Classes:
US Patent Ref:

3006798	Oct, 1961	Holland	156/197.
3247039	Apr, 1966	Schultheiss	156/167.
3366525	Jan, 1968	Jackson	156/197.
3402096	Sep, 1968	Blanchette	428/369.
3402097	Sep, 1968	Knudsen et al.	57/140.
3418199	Dec, 1968	Anton et al.	264/177.
3428506	Feb, 1969	Johnstone	428/112.
3484916	Dec, 1969	Johnston	28/72.
3494993	Feb, 1970	Breid, Jr. et al.	264/166.
3684647	Aug, 1972	Matsui et al.	264/171.

Other Refs:
Primary Examiner: Silverman, Stanley S.
Assistant Examiner:
Attorney: Daniel; William J.