ZERO HALOGEN CABLE

• US 20120024570A1
• Filed: 07/18/2011
• Published: 02/02/2012
• Est. Priority Date: 08/02/2010
• Status: Abandoned Application

• Current Assignee: General Cable Technologies Corporation (General Cable Corporation)
• Original Assignee: General Cable Technologies Corporation (General Cable Corporation)
• Inventors: BROWN, Scott M., MCLINN, Matthew S., ALBRINCK, Alice C., GOULD, Rob S., MILLER, Shaun, CHAMBERLAIN, Richard
• Application Number:
  US13/184,964
• Publication Number:
  US 20120024570A1
• Time in Patent Office: Days
• US Class Current: 174/116
• CPC Class Codes: H01B 11/02 Cables with twisted pairs or quads
• CPC Class Codes: H01B 3/441 from alkenes
• CPC Class Codes: H01B 7/295 using material resistant to flame

Abstract

A cable that comprises a cable core that includes a plurality of insulated pairs of twisted conductors wherein, the insulation of at least one pair of the plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is substantially flame retardant, and the insulation of at least another pair of the plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is not flame retardant.

Claims

1. A cable, comprising:

a cable core including;

a plurality of insulated pairs of twisted conductors wherein,

said insulation of at least one pair of said plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is substantially flame retardant, and said insulation of at least another pair of said plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is not flame retardant.

2. A cable according to claim 1, further comprising

a jacket surrounding said plurality of insulated pairs of twisted conductors, said jacket being formed of a zero halogen material.

3. A cable according to claim 2, wherein

said zero halogen material of said jacket is a mixture of substantially flame retardant material and non-flame retardant material.

4. A cable according to claim 1, wherein

said plurality of said insulated pairs of twisted conductors includes one pair with insulation that is formed of a zero halogen material that is substantially flame retardant and three pairs with insulation that is formed of a zero halogen material that is not flame retardant.

5. A cable according to claim 1, wherein

said plurality of said insulated pairs of twisted conductors includes two pairs with insulation that is formed of a zero halogen material that is flame retardant and two pairs with insulation that is formed of zero halogen material that is not flame retardant.

6. A cable according to claim 1, wherein

said insulation of said one pair of said plurality of insulated pairs of twisted conductors is formed of a flame retardant polyolefin.

7. A cable according to claim 6, wherein

said insulation of said another pair of said plurality of insulated pairs of twisted conductors is formed of a non-flame retardant polyethylene.

8. A cable according to claim 1, further comprising

A separator disposed between said plurality of insulated pairs of twisted conductors, said separator being formed of a zero halogen material.

9. A cable, comprising:

a cable core including;

a plurality of insulated pairs of twisted conductors wherein,

said insulation of at least one pair of said plurality of insulated pairs of twisted conductors is formed of a mixture of a zero halogen material that is substantially flame retardant and a zero halogen material that is not flame retardant, and said insulation of at least another pair of said plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is not flame retardant.

10. A cable according to claim 9, wherein

said mixture of said insulation of said one pair of said plurality of insulated pairs of twisted conductors is about 80% zero halogen that is not flame retardant and 20% that is substantially flame retardant.

11. A cable according to claim 9, wherein

said mixture of said insulation includes non-porous micro oxide particles.

12. A cable according to claim 9, wherein

more than one pair of said plurality of pairs of twisted conductors has insulation that is formed of a zero halogen material that is substantially flame retardant.

13. A cable according to claim 9, wherein

said zero halogen material that is substantially flame retardant is a polyolefin.

14. A cable according to claim 9, further comprising

a jacket surrounding said plurality of pairs, said jacket being formed of a zero halogen material.

15. A cable, comprising:

a cable core including;

a plurality of insulated pairs of twisted conductors, wherein

at least one pair of said plurality of insulated pairs of twisted conductors has insulation with a portion thereof being a zero halogen material that is substantially flame retardant, and said insulation of at least another pair of said plurality of insulated pairs of twisted conductors is formed of a zero halogen material that is not flame retardant.

16. A cable according to claim 15, wherein

said portion of said insulation of said one pair is a longitudinal strip.

17. A cable according to claim 16, wherein

said longitudinal strip is a flame retardant polyolefin.

18. A cable according to claim 15, wherein

said portion of said insulation of said one pair is foamed.

19. A cable, comprising:

a cable core including;

a plurality of insulated pairs of twisted conductors, wherein

said insulation of at least one pair of said plurality of insulated pairs of twisted conductors has inner and outer layers, said inner layer being a zero halogen material that is not flame retardant and said outer layer being a zero halogen material that is substantially flame retardant, and said insulation of at least another pair of said plurality of insulated pairs of twisted conductors is a zero halogen material that is not flame retardant.

20. A cable according to claim 19, wherein

a plurality of said pairs have insulation with inner and outer layers, said inner layer being a zero halogen material that is not flame retardant and said outer layer being a zero halogen material that is substantially flame retardant.

21. A cable according to claim 19, further comprising

a jacket surrounding said plurality of pairs, said jacket being formed of a zero halogen material.

22. A cable according to claim 19, wherein

at least a portion of said insulation of either said inner or outer layer is foamed.

23. A cable, comprising:

a cable core including;

a plurality of insulated conductors wherein,

said insulation of at least one conductor of said plurality of insulated conductors is formed of a zero halogen material that is substantially flame retardant, and said insulation of at least another conductor of said plurality of insulated non-paired conductors is formed of a zero halogen material that is not flame retardant.

24. A cable according to claim 23, further comprising

a jacket surrounding said plurality of insulated conductors, said jacket being formed of a zero halogen material.

25. A cable according to claim 23, wherein

said plurality of said insulated conductors includes one conductor with insulation that is formed of a zero halogen material that is substantially flame retardant and a plurality of other conductors with insulation that is formed of a zero halogen material that is not flame retardant.

26. A cable according to claim 23, wherein

said plurality of said insulated conductors includes at least two conductors with insulation that is formed of a zero halogen material that is substantially flame retardant and at least one other conductor with insulation that is formed of a zero halogen material that is not flame retardant.

27. A cable according to claim 23, wherein

said insulation of said one conductor of said plurality of insulated conductors is formed of a flame retardant polyolefin.

28. A cable according to claim 27, wherein

said insulation of said another conductor of said plurality of insulated conductors is formed of a non-flame retardant polyethylene.

29. A cable according to claim 23, wherein

a portion of said insulation of said one conductor of said plurality of insulated conductors is foamed.

30. A cable according to claim 23, wherein

a portion of said insulation of said another conductor of said plurality of insulated conductors is foamed.

31. A cable, comprising:

a cable core including;

a plurality of insulated conductors wherein,

said insulation of at least one conductor of said plurality of insulated conductors is a mixture of a zero halogen material that is substantially flame retardant and a zero halogen material that is not flame retardant, and said insulation of at least another conductor of said plurality of insulated conductors is a zero halogen material that is not flame retardant.

32. A cable according to claim 31, wherein

said mixture of said insulation of said one conductor of said plurality of insulated conductors is about 80% zero halogen that is not flame retardant and 20% that is flame retardant.

33. A cable according to claim 31, wherein

said mixture of said insulation includes non-porous micro oxide particles.

34. A cable according to claim 31, wherein

more than one conductor of said plurality of conductors has insulation that is a zero halogen material that is flame retardant.

35. A cable according to claim 31, wherein

said zero halogen material that is flame retardant is a polyolefin.

36. A cable according to claim 31, further comprising

a jacket surrounding said plurality of conductors, said jacket being formed of a zero halogen material.

37. A cable, comprising:

a cable core including;

a plurality of insulated conductors, wherein

at least one conductor of said plurality of insulated conductors has insulation with a portion thereof being a zero halogen material that is substantially flame retardant, and said insulation of at least another conductor of said plurality of insulated conductors is a zero halogen material that is not flame retardant.

38. A cable according to claim 37, wherein

said portion of said insulation of said one conductor is a longitudinal strip.

39. A cable according to claim 38, wherein

said longitudinal strip is a flame retardant polyolefin.

40. A cable according to claim 37, wherein

said portion of said insulation of said one conductor is foamed.

41. A cable, comprising:

a cable core including;

a plurality of insulated conductors, wherein

said insulation of a least one conductor of said plurality of insulated conductors has inner and outer layers, said inner layer being a zero halogen material that is not flame retardant and said outer layer being a zero halogen material that is substantially flame retardant, and said insulation of at least another conductor of said plurality of insulated conductors being a zero halogen material that is not flame retardant.

42. A cable according to claim 41, wherein

a plurality of said conductors have insulation with inner and outer layers, said inner layer being a zero halogen material that is not flame retardant and said outer layer being a zero halogen material that is flame retardant.

43. A cable according to claim 41, further comprising

a jacket surrounding said plurality of conductors, said jacket being formed of a zero halogen material.

44. A cable according to claim 41, wherein

at least a portion of said insulation of either said inner or outer layer is foamed.