Communications cables with oppositely twinned and bunched insulated conductors

A communications cable, comprising:

• an elongate cable jacket having an internal cavity;
• and
• a plurality of twisted pairs of insulated conductors disposed in the internal cavity of the cable jacket, each of the conductors being insulated with a polymeric layer;
• wherein each of the insulated conductors within each of the twisted pairs of conductors defines a twinning helix having a first rotative direction, each of the twinning helices having a different lay length;
• and
• wherein each of the twisted pairs defines a bunching helix having a second rotative direction, the second rotative direction being opposite that of the first rotative direction, the bunching helix having a different lay length than any of those of the twinning helices.

A communications cable, comprising:

• an elongate cable jacket having an internal cavity;
• and
• a plurality of twisted pairs of insulated conductors disposed in the internal cavity of the cable jacket, each of the conductors being insulated with a polymeric layer, at least one of the polymeric layers comprising a foamed polymeric material;
• wherein each of the insulated conductors within each of the twisted pairs of conductors defines a twinning helix having a first rotative direction;
• and
• wherein each of the twisted pairs defines a bunching helix having a second rotative direction, the second rotative direction being opposite that of the first rotative direction.

A method of manufacturing a communications cable, comprising:

• (a) twisting two insulated conductors about a twinning axis to form a helical twisted conductor pair, the helix thereof having a first rotative direction;
• (b) repeating step (a) to form a predetermined number of helical twisted conductor pairs, each of the helices of the helical twisted conductor pairs having the first rotative direction;
• and
• (c) bunching the predetermined number of helical twisted conductor pairs about a bunching axis to form a helical bunch of twisted conductor pairs, the helix formed by the bunch of twisted conductor pairs having a second rotative direction opposite that of the first rotative direction.