Method of making an electronically active textile article
A method of making articles from electrically active textiles. First and second fabric pieces include conductors therein. A seam is established between the first and second fabric pieces. A determination is made, at the seam, based on one or more predetermined factors, which conductors of the first fabric piece intersect or overlap with which conductors of the second fabric piece. At the seam, an electrical and mechanical connection is formed between select conductors of the first fabric piece and select conductors of the second fabric piece.
1. A method of making an electrically active article, the method comprising:
wrapping one or more insulated wires about a fiber including a polymeric material to render said fiber a conductor;
weaving a plurality of said conductors into a fabric;
cutting said fabric into pieces according to a pattern;
assembling said pieces together via seams to form a garment or article; and
electrically connecting at least select conductors at a seam by:
laying the seam on a platen,
applying an ultrasonic horn to at least a portion of the seam,
applying pressure to the ultrasonic horn,
energizing the ultrasonic horn to bare wires and to melt the polymeric material,
deenergizing the ultrasonic horn, and
allowing the polymeric material to cool encapsulating the wires.
2. The method of claim 1 in which said fibers include a blend of synthetic and natural fibers.
3. The method of claim 1 in which all the fibers of said fabric are conductors.
4. The method of claim 1 further including determining mathematically, at the seam, based on one or more predetermined factors, which conductors of a first fabric piece overlap with which conductors of a second fabric piece.
5. The method of claim 4 in which the predetermined factors include the seam type, the distance between conductors in each fabric piece, and/or any twist between the first and second fabric pieces at the seam.
6. The method of claim 4 in which the overlap conductors at the seam form Moiré fringe lines and the predetermined factors further include the distance between the fringe lines and/or the angle at which they extend.
7. The method of claim 1 further including forming electrical and mechanical connections between select warp and weft conductors within a single fabric piece.
8. The method of claim 1 in which the electrically active article includes locations designated for connector placement that are prepared by welding a patch comprised of foil and fabric over a designated conductor thereby forming an electromechanical connection with the electrically active textile article.
9. The method of claim 8 in which forming an electrical and mechanical connection includes, for fabrics with insufficient polymeric content, adding a polymeric patch that covers the foil patch.
10. The method of claim 1 in which forming an electrical and mechanical connection includes, for fabrics without any polymeric content, adding a polymeric patch.