Method and apparatus for the production of a high-strength, tear

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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156167, 156178, 15624415, 15624423, 15624425, 264103, 264173, 2642101, 264DIG81, 425114, B32B 704

Patent

active

045198608

ABSTRACT:
A method and an apparatus for the production of a composite plastic material consisting of oriented polymer filaments and a polymer film web, and more particularly, the production of a composite material which possesses an improved physical strength and higher tear resistance in comparison with plastic film materials which are not reinforced. An extrusion die is used for example, a conventional tubular extrusion die for extruding a continuous blown tubular plastic film web and wherein the die orifice is encompassed by spinerette apertures through which there are concurrently extruded a plurality of polymer filaments which are oriented and initially conveyed along a path substantially parallel to but not in adherence with the blown tubular plastic film web. Upon a further separation of the filaments and the tubular film, the filaments may be at least partially coated with a suitable adhesive material and, thereafter, adhesively bonded or laminated to the surface of the film web in order to produce a composite material constituted of filaments and film.

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patent: 3589958 (1971-06-01), Schrenk
patent: 3770539 (1973-11-01), Bullock
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patent: 3926706 (1975-12-01), Reifenhauser et al.
patent: 3957566 (1976-05-01), Rahlfs
patent: 3959057 (1976-05-01), Smith
patent: 4350549 (1982-09-01), Frehner
patent: 4428791 (1984-01-01), Reinke

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