Apparatus and method for forming cable

Details Apparatus and method for forming cable Apparatus and method for forming cable

1992-04-10

1993-11-09

Lee, John D.

Optical waveguides

Optical transmission cable

385101, 174 23R, G02B 644

Patent

active

052610217

ABSTRACT:
A cable, which may be a fiber optic cable, includes a plurality of conductors which are twisted together. A tape with a layer of superabsorbent powder thereon, is wrapped around the conductors. A sheath is formed around the outside of the tape. If a leak should occur, the superabsorbent powder absorbs moisture and expands to block further entry of moisture into the cable. The tape is formed by applying a layer of adhesive to a strip of flexible material. The adhesive is advantageously applied in a helical pattern which is spaced from longitudinal edges of the tape. The superabsorbent powder is then applied to the adhesive. A suction head removes excess superabsorbent powder from the tape. The tape is then wrapped around the conductors of the cable. The adhesive may be a sealant material which is applied to the conductors before they are wrapped with the tape.

REFERENCES:
patent: Re33481 (1990-12-01), Ziecker
patent: 3766307 (1973-10-01), Andrews, Jr.
patent: 4365865 (1982-12-01), Stiles
patent: 4600603 (1986-07-01), Mulder
patent: 4605818 (1986-08-01), Arroyo et al.
patent: 4675209 (1987-06-01), Pedigrew
patent: 4815813 (1989-03-01), Arroyo et al.
patent: 5002229 (1991-03-01), Schneider et al.
patent: 5010209 (1991-04-01), Marciano-Agostinelli et al.
Nordson Application Bulletin No. A645 having a copyright date of Oct. 1988.

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