Flame retardant, electrically conductive adhesive materials and related methods

Patent metadata

Field	Value
Publication number	US-9674993-B2
Application number	US-201514849912-A
Country	US
Kind code	B2
Filing date	Sep 10, 2015
Priority date	Mar 14, 2013
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

Disclosed are exemplary embodiments of a flame retardant, electrically conductive adhesive material. In an exemplary embodiment, a flame retardant, electrically conductive adhesive material suitable for use as tape generally includes a layer of adhesive. A layer of electrically conductive fabric is on the layer of adhesive. A flame retardant coating is on the layer of electrically conductive fabric. The flame retardant coating includes a carbon-containing resin.

First claim

What is claimed is:

1. A flame retardant, electrically conductive adhesive material suitable for use as tape and comprising:
a layer of electrically conductive adhesive that is free of flame retardant;
a layer of electrically conductive fabric on the layer of electrically conductive adhesive; and
a flame retardant coating on the layer of electrically conductive fabric, the coating including a carbon-containing resin;
wherein the flame retardant, electrically conductive adhesive material is able to achieve a UL flame rating; and
wherein:
the flame retardant coating including the carbon-containing resin is the sole flame retardant included in the flame retardant, electrically conductive adhesive material; and/or
the flame retardant, electrically conductive adhesive material has a z-axis resistance of 0.007 ohms or less, and/or a surface resistivity of 0.07 ohms per square or less, and/or a peel adhesion of at least 1.6 pounds per inch width or higher.

2. The adhesive material of claim 1 , wherein:
wherein the flame retardant, electrically conductive adhesive material has a z-axis resistance of 0.007 ohms or less, and/or a surface resistivity of 0.07 ohms per square or less, and/or a peel adhesion of at least 1.6 pounds per inch width or higher; and
the flame retardant coating including the carbon-containing resin is the sole flame retardant included in the flame retardant, electrically conductive adhesive material; and
the flame retardant, electrically conductive adhesive material is able to achieve a flame rating of UL510.

3. The adhesive material of claim 1 , wherein the flame retardant, electrically conductive adhesive material is able to achieve a flame rating of UL510.

4. A flame retardant, electrically conductive adhesive material suitable for use as tape and comprising:
a layer of pressure sensitive adhesive that is free of flame retardant;
a layer of electrically conductive fabric on the layer of pressure sensitive adhesive; and
a carbon-containing resin in a coating on the layer of electrically conductive fabric;
wherein the carbon-containing resin provides sufficient flame retardance such that the flame retardant, electrically conductive adhesive material is able to achieve a UL flame rating; and
wherein the carbon-containing resin is the sole flame retardant included in the flame retardant, electrically conductive adhesive material.

5. A flame retardant, electrically conductive adhesive material suitable for use as tape and comprising:
a layer of pressure sensitive adhesive that is free of flame retardant;
a layer of electrically conductive fabric on the layer of pressure sensitive adhesive; and
a carbon-containing resin in a coating on the layer of electrically conductive fabric;
wherein the carbon-containing resin provides sufficient flame retardance such that the flame retardant, electrically conductive adhesive material is able to achieve a UL flame rating; and
wherein the flame retardant, electrically conductive adhesive material has a z-axis resistance of 0.007 ohms or less, and/or a surface resistivity of 0.07 ohms per square or less, and/or a peel adhesion of at least 1.6 pounds per inch width or higher.

6. A flame retardant, electrically conductive adhesive material suitable for use as tape and comprising:
a layer of pressure sensitive adhesive that is free of flame retardant;
a layer of electrically conductive fabric on the layer of pressure sensitive adhesive; and
a carbon-containing resin in a coating on the layer of electrically conductive fabric;
wherein the carbon-containing resin provides sufficient flame retardance such that the flame retardant, electrically conductive adhesive material is able to achieve a UL flame rating; and
wherein the flame retardant, electrically conductive adhesive material is able to achieve a flame rating of UL510.

7. The adhesive material of claim 6 , wherein the carbon-containing resin is the sole flame retardant included in the flame retardant, electrically conductive adhesive material.

8. A tape comprising a flame retardant, electrically conductive adhesive material that comprises:
a layer of electrically conductive adhesive that is free of flame retardant;
a layer of electrically conductive fabric on the layer of electrically conductive adhesive; and
a flame retardant coating on the layer of electrically conductive fabric, the coating including a carbon-containing resin;
wherein the tape is able to achieve a UL flame rating; and
wherein the tape has no more than a maximum of 900 parts per million chlorine, no more than a maximum of 900 parts per million bromine, and no more than a maximum of 1,500 parts per million total halogens; and
wherein the tape has a surface resistivity of 0.07 ohms per square or less and/or a peel adhesion of at least 1.6 pounds per inch width or higher.

9. The tape of claim 8 , wherein the carbon-containing resin is the sole flame retardant included in the flame retardant, electrically conductive adhesive material.

10. The tape of claim 8 , wherein the tape is able to achieve a flame rating of UL510.

11. A flame retardant, electrically conductive tape comprising:
an electrically conductive fabric having first and second sides;
a flame retardant carbon-containing resin on the first side of the electrically conductive fabric; and
an electrically conductive, pressure sensitive adhesive that is free of flame retardant on the second side of the electrically conductive fabric;
wherein the flame retardant carbon-containing resin provides sufficient flame retardance such that the tape is able to achieve a UL flame rating; and
wherein the flame retardant carbon-containing resin is the sole flame retardant included in the tape.

12. The tape of claim 11 , wherein the tape has no more than a maximum of 900 parts per million chlorine, no more than a maximum of 900 parts per million bromine, and no more than a maximum of 1,500 parts per million total halogens.

13. A flame retardant, electrically conductive tape comprising:
an electrically conductive fabric having first and second sides;
a flame retardant carbon-containing resin on the first side of the electrically conductive fabric; and
an electrically conductive, pressure sensitive adhesive that is free of flame retardant on the second side of the electrically conductive fabric;
wherein the flame retardant carbon-containing resin provides sufficient flame retardance such that the tape is able to achieve a UL flame rating; and
wherein the tape has a z-axis resistance of 0.007 ohms or less, and/or a surface resistivity of 0.07 ohms per square or less, and/or a peel adhesion within a range of 36 ounces per inch width to 40 ounces per inch width.

14. A flame retardant, electrically conductive tape comprising:
an electrically conductive fabric having first and second sides;
a flame retardant carbon-containing resin on the first side of the electrically conductive fabric; and
an electrically conductive, pressure sensitive adhesive that is free of flame retardant on the second side of the electrically conductive fabric;
wherein the flame retardant carbon-containing resin provides sufficient flame retardance such that the tape is able to achieve a UL flame rating; and
wherein the tape is able to achieve a flame rating of UL510.

15. The tape of claim 14 , wherein the flame retardant carbon-containing resin is the sole flame retardant included in the tape.

Assignees

• Laird Technologies Inc

Inventors

• Creasy Jr Larry Don
• Hsu Alex
• Lin Yishen

Classifications

• Y10T428/24967

  Absolute thicknesses specified · CPC title

• C09J7/205

  characterised by the backing impregnating composition · CPC title

• C09J7/38

  Pressure-sensitive adhesives [PSA] · CPC title

• Y10T428/2848

  Three or more layers · CPC title

• C09J9/02

  Electrically-conducting adhesives · CPC title