Method and apparatus for forming cross-laminated thermoplastic f

Details Method and apparatus for forming cross-laminated thermoplastic f Method and apparatus for forming cross-laminated thermoplastic f

1982-05-17

1984-03-27

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624414, 15624418, 15624424, 156260, 156264, 1562728, 1563796, 156510, 156512, B32B 3102

Patent

active

044392605

ABSTRACT:
A method and apparatus for the forming of cross-laminated thermoplastic film, particularly from a supply roll of a layflat, highly melt-oriented tubular thermoplastic film. The layflat tubular film is advanced while concurrently being rotated about its longitudinal axis to thereby generate a compound linear and rotary motion, inflated and slit by a heated wire or laser beam on a bias to provide at least two layers of film strips which are adapted to be superimposed and laminated with the orientation of one layer being biased relative to the other layer so as to provide a cross-laminated thermoplastic film evidencing high strength in both the machine direction and the transverse direction of the film web.

REFERENCES:
patent: 3265552 (1966-08-01), Berggren et al.
patent: 3322613 (1967-05-01), Rasmussen
patent: 3340124 (1967-09-01), Lowe et al.
patent: 3342657 (1967-09-01), Dyer
patent: 3467565 (1969-09-01), Utz
patent: 3471353 (1969-10-01), Rasmussen
patent: 3496059 (1970-02-01), Rasmussen
patent: 3758370 (1973-09-01), Sakurai et al.
patent: 4011128 (1977-03-01), Suzuki
patent: 4062712 (1977-12-01), Stark

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