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 fabric sleeve for protecting elongate members against at least one of EMI, RFI or ESD, comprising:
a wall extending along a longitudinal axis between opposite ends, said wall being formed from a plurality of filaments interlaced with one another, at least one of said filaments being provided as a continuous strand of conductive wire and at least one of said filaments being provided as a heat-fusible nonconductive filament, said continuous strand of conductive wire being at least partially embedded in fixed attachment with said at least one heat-fusible nonconductive filament at bond joints formed of melted and solidified material of said at least one heat-fusible nonconductive filament.
2. The fabric sleeve of claim 1 wherein said wall has opposite edges extending generally parallel to said longitudinal central axis and further comprising at least one heat-set filament biasing said opposite edges into overlapping relation with one another.
3. The fabric sleeve of claim 2 wherein said at least one heat-fusible nonconductive filament is a monofilament.
4. The fabric sleeve of claim 3 wherein said at least one heat-set filament is a monofilament.
5. The fabric sleeve of claim 4 wherein said at least one heat-fusible nonconductive monofilament and said at least one heat-set monofilament are provided as a bicomponent monofilament having an outer sheath of heat-fusible material having a first melt temperature, said outer sheath forming said at least one heat-fusible nonconductive filament, and an inner core of heat-settable material having a second melt temperature that is greater than said first melt temperature, said inner core forming said at least one heat-set filament.
6. The fabric sleeve of claim 5 wherein at least one of said at least one bicomponent monofilament extends circumferentially about said longitudinal axis.
7. The fabric sleeve of claim 2 wherein said wall is woven with warp yarn extending generally parallel to said longitudinal axis and weft yarn extending generally transverse to said longitudinal axis, at least one of said warp yarn and at least one of said weft yarn being provided as said continuous strand of conductive wire and at least one of said weft yarn being provided as said at least one heat-fusible nonconductive monofilament and at least one of said weft yarn being provided as said at least one heat-set monofilament.
8. The fabric sleeve of claim 7 wherein said at least one continuous strand of conductive wire is a hybrid filament including said at least one continuous strand of conductive wire twisted or served with a non-conductive multifilament.
9. The fabric sleeve of claim 1 wherein said plurality of filaments are braided with one another to form generally diamond-shaped openings bounded by said continuous strand of conductive wire, said generally diamond-shaped openings being fixed in size by said bond joints.
10. The fabric sleeve of claim 1 wherein said heat-fusible non-conductive filaments are multifilaments.
11. The fabric sleeve of claim 1 wherein said wall is seamless and circumferentially continuous about said longitudinal axis.
12. The fabric sleeve of claim 1 wherein said wall is knit.