Electrically conductive elastic composite yarn, methods for making the same, and articles incorporating the same
First Claim
Patent Images
1. An electrically conductive elastic composite yarn comprising:
- at least one elastic member having a relaxed unit length L and a drafted length of N×
L, wherein N is in the range of about 1.0 to about 8.0, at least one conductive covering filament surrounding the elastic member, the conductive covering filament having a length that is greater than the drafted length of the elastic member, such that substantially all of an elongating stress imposed on the composite yarn is carried by the elastic member, and a stress-bearing member surrounding the elastic member, and wherein the stress-bearing member has a total length less than the length of the conductive covering filament and greater than, or equal to, the drafted length (N×
L) of the elastic member, such that a portion of the elongating stress imposed on the composite yarn is carried by the stress-bearing member.
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Abstract
Provided is an electrically conductive elastic composite yarn having an elastic member that is surrounded by at least one conductive covering filament. The conductive covering filament has a length that is greater than the drafted length of the elastic member such that substantially all of an elongating stress imposed on the composite yarn is carried by the elastic member. The elastic composite yarn may further include an optional stress-bearing member surrounding the elastic member and the conductive covering filament.
51 Citations
22 Claims
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1. An electrically conductive elastic composite yarn comprising:
- at least one elastic member having a relaxed unit length L and a drafted length of N×
L, wherein N is in the range of about 1.0 to about 8.0, at least one conductive covering filament surrounding the elastic member, the conductive covering filament having a length that is greater than the drafted length of the elastic member, such that substantially all of an elongating stress imposed on the composite yarn is carried by the elastic member, and a stress-bearing member surrounding the elastic member, and wherein the stress-bearing member has a total length less than the length of the conductive covering filament and greater than, or equal to, the drafted length (N×
L) of the elastic member, such that a portion of the elongating stress imposed on the composite yarn is carried by the stress-bearing member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- at least one elastic member having a relaxed unit length L and a drafted length of N×
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22. A fabric comprising a plurality of electrically conductive elastic composite yarns, wherein each electrically conducting elastic composite yarn comprises:
- an elastic member having a relaxed unit length L and a drafted length of N×
L, wherein N is in the range of about 1.0 to about 8.0, and at least one conductive covering filament surrounding the elastic member, the conductive covering filament having a length that is greater than the drafted length of the elastic member, such that substantially all of an elongating stress imposed on the composite yarn is carried by the elastic member, wherein one or more of the composite yarns further comprise;
an inelastic synthetic polymer yarn surrounding the elastic member, and wherein the inelastic synthetic polymer filament yarn has a total length less than the length of the conductive covering filament, such that a portion of the elongating stress imposed on the composite yarn is carried by the inelastic synthetic polymer yarn.
- an elastic member having a relaxed unit length L and a drafted length of N×
Specification