Bristle coir is the longest variety of coir fibre. It is manufactured from retted coconut husks through a process called defibering. The coir fibre thus extracted is then combed using steel combs to make the fibre clean and to remove short fibres. Bristle coir fibre is used as bristles in brushes for domestic and industrial applications.
Bristle Coir Fiber:- The two grades of Bristle Coir Fiber shall be comparatively long and stiff. The texture shall be firm and stiff and shall not be brittle. The colour shall be cinnamon brown.
| Mass |
| The percentage of Mass of ‘long’, ‘Medium’ and ‘Short’ fibres in the different grades of Bristle Coir Fibre, Mattress Coir Fibre and Decorated Coir Fibre shall be in accordance with the requirement of Table I,II & III above. |
| Moisture Content |
| The Moistrure Content of the different grades of Bristle coir fibre, Mattress Coir fibre and Decorticated coir fibre shall not exceed 15 percent. |
| Chloride Content |
| The Chloride content of the different grades of coir Bristle fibre. Mattress Coir fibre and Decorticated coir fibre shall not exceed 0.6 percent by Mass. |
| Sulphate content |
| Sulphate content of different grades of Bristle coir fibre, Mattress Coir Fibre and Decorticated coir fibre shll not exceed 0.25 % by Mass. |