Protective sleeve with bonded wire filaments and methods of construction thereof
View Patent ↗A fabric sleeve for protecting elongate members against at least one of EMI, RFI or ESD and method of construction thereof is provided. The sleeve includes a wall extending along a longitudinal axis between opposite ends. The wall is formed from a plurality of filaments interlaced with one another, with at least one of the filaments being provided as a continuous strand of conductive wire and at least some of the filaments being provided as heat-fusible nonconductive filaments. The heat-fusible nonconductive filaments abut the continuous strand of conductive wire at a plurality of bond joints. The continuous strand of conductive wire is at least partially embedded in bonded, fixed attachment with the heat-fusible nonconductive filaments at the bond joints.
1. A method of constructing a fabric sleeve for protecting elongate members against at least one of EMI, RFI or ESD, comprising:
forming a wall extending along a longitudinal axis between opposite ends by interlacing a plurality of filaments with one another and providing at least one of the filaments as a continuous strand of conductive wire, providing at least one of the filaments as a heat-settable nonconductive filament, and providing at least one of the filaments as a heat-fusible nonconductive filament;
at least partially embedding said at least one continuous strand of conductive wire in said at least one heat-fusible nonconductive filament;
curling the wall to bring opposite edges of the wall into overlapping relation with one another; and
applying heat to the wall to heat-set said at least one heat-settable nonconductive filament without causing said heat-settable nonconductive filament to melt and to simultaneously melt said at least one heat-fusible nonconductive filament to fix said at least one continuous strand of conductive wire against relative movement with said at least one heat fusible nonconductive filament.
2. The method of claim 1 further including performing the interlacing in a weaving process.
3. The method of claim 2 further including weaving the at least one continuous strand of wire in a warp direction extending generally parallel to the longitudinal axis and in a weft direction extending generally transverse to the longitudinal axis.
4. The method of claim 3 further including providing the at least one heat-fusible nonconductive filament and the at least one heat-settable non-conductive filament as a bicomponent monofilament having an outer sheath of heat-fusible material having a first melt temperature and an inner core of heat-settable material having a second melt temperature that is greater than said first melt temperature.
5. The method of claim 4 further including heat-fusing the outer sheath in bonded, fixed attachment with the at least one continuous strand of conductive wire and biasing opposite edges of the wall into overlapping relation with one another by heat-setting the inner core.
6. The method of claim 5 further including providing the at least one continuous strand of conductive wire as a hybrid filament including the at least one continuous strand of conductive wire twisted or served with a non-conductive multifilament.
7. The method of claim 1 further including providing the at least one continuous strand of conductive wire as a hybrid filament including the at least one continuous strand of conductive wire twisted or served with a non-conductive multifilament.
8. The method of claim 1 further including performing the interlacing in a braiding process.
9. The method of claim 1 further including performing the interlacing in a knitting process.
10. The method of claim 1 further including providing the at least one heat-fusible nonconductive filament and the at least one heat-settable non-conductive filament as separate filaments.