Laminated film or sheet structure and process for production the

Details Laminated film or sheet structure and process for production the Laminated film or sheet structure and process for production the

1979-08-30

1981-07-21

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

4284231, 4284242, 428910, B32B 2732

Patent

active

042799570

ABSTRACT:
A laminated film or sheet structure composed of (i) an adhesive layer (A), (ii) synthetic resin film layers (B.sub.1) and (B.sub.2) monoaxially oriented in a direction oblique to the longitudinal direction of the film, said layers (B.sub.1) and (B.sub.2) being located on both surfaces of said layer (A) in contact therewith, the directions of the orientations of said layers (B.sub.1) and (B.sub.2) crossing each other, and (iii) a substantially non-oriented synthetic resin film layer (C.sub.1) and/or a substantially non-oriented synthetic resin film layer (C.sub.2), said layers (C.sub.1) and/or (C.sub.2) being melt-adhered to both or one of said layers (B.sub.1) and (B.sub.2), said layers (C.sub.c) and/or (C.sub.2) having a lower orientation temperature than said layers (B.sub.1) and (B.sub.2); and a process for production thereof.

REFERENCES:
patent: 3342657 (1967-09-01), Dyer
patent: 3471353 (1969-10-01), Rasmussen
patent: 3891374 (1975-06-01), Ninomiya et al.
patent: 3983285 (1976-09-01), Riboulet et al.
patent: 4009975 (1977-03-01), Ninomiya et al.
patent: 4084028 (1978-04-01), Rasmussen

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