Coir fibers are extracted from the fruit coconut. It grows within the half between the husk of the coconut and its outer shell. The colour of this fiber is golden, subsequently additionally it is often known as 'Golden Fiber'. Nonetheless they don’t seem to be initially golden in coloration, however of pale coloration. At later stage when fibers develop into laborious, they purchase yellowish-golden coloration due to the lignin deposits on its partitions. Its construction is slender and hole.
Coir fibers are water-proof in nature, additionally to the ocean water, which is a distinguishable property. There are primarily two sorts of coir – white coir and brown coir. For processing of white coir each sea and contemporary water is used, whereas for brown coir contemporary water is used.
Properties of coir
– It’s a dangerous conductor of warmth. It offers padding towards excessive temperatures and sound.
– It’s simple to clean and clear, which makes them extremely sturdy and upkeep free.
– It’s unaffected by fungi, rot and different moths. As it’s proof against moisture the expansion of micro-organisms is barred.
– Even whether it is used for a few years it doesn’t free its form simply.
Kinds of coir
The sorts of coir – brown coir and white coir are categorized on the premise of the stage of the fruit when they’re extracted from it, ie whether or not the coir is extracted from an immature coconut or absolutely ripped one. White coir is extracted from the husks of coconut which isn’t absolutely ripen and it’s comparatively much less stronger and extra softer. Brown coir is extracted from the husks of coconut which is 100% ripened.
– White coir
As it’s derived from immature husks, these husks are submerged in water for about ten month's time. On this time interval the plant tissues protecting the coir fibers break down on account of chemical reactions of the micro-organisms. Then the husks are hand overwhelmed which separates the lengthy fibers. The fibers additional are dried within the solar, cleaned and despatched for spinning the place they’re transformed into yarn. These yarns are helpful for making ropes, mats, and so forth.
– Brown coir
The husks are immersed into the gradual flowing water, had been the fibers get swollen consequently develop into mushy. The lengthy fibers and shorter fibers are separated from one another. The shorter fibers are often known as mattress fibers and longer ones are often known as bristle fibers. They’re first cleaned, solar dried and packed. Coir fibers are wavy in construction and have elasticity. The ropes are made by twisting these fibers. The lengthy fibers are cleaned by water, dried within the solar and made into bundles. They’re then made straight by metal combs and dyed with the specified colours.
The process for acquiring coir
Harvesting of the fiber
The coconuts are obtained from the timber, fetched by the climber with the assistance of the bamboo pole and a knife. As it’s described earlier the 2 sorts of coir are extracted from totally different phases of the coconut, the unripe coconut are allowed to dry within the solar for a few month. Whereas the absolutely ripened coconuts are husked as quickly as they’re fetched from the tree, then the fruit is separated from the seed. Earlier this work was accomplished solely manually however now-a-days husking machines do that work at many locations.
Retting of the fiber
Retting is a process the place the husks are decomposed in both salt water or contemporary water, encouraging the expansion of micro-organisms. At this stage the coir fibers separate from the husk forsaking residue which is called coir pith. Retting in salt water is used for unripe coconut husks and contemporary water for ripe coconut husks.
Salt water retting requires the unripe inexperienced husks to be soaked in saline water. Typically they’re soaked in pits close to the ocean. This methodology takes about 8-10 months time period. If microbes are added artificially to the water, then this process won’t take a lot time.
In freshwater retting the absolutely ripened husks are soaked in pits full of water alongside the river banks. Or else put within the web which is submerged in river water by including some weight to the web that retains them dipped within the water. This process takes about time interval of 6 months. On account of development in know-how, mechanical machines are getting used for retting. The unripe coconut husks are dry milled, thereafter crushed in crushing machines. Additional they’re required to be soaked in water for about 1-2 days solely and ultimately dry milling is completed once more. In case of ripe husks, they’re crushed in crushing machines then endure the retting process for optimum of 10 days.
Defibering course of
Defibering is completed each manually and mechanically. In handbook course of the retted husks are hand overwhelmed with picket hammer that separates the fiber from the residue. Then are additional sorted out by hand. In mechanical process, the retted husks are put into metal drums with beaters, these machines function with the assistance of motor. The rotating drums with metal spikes additional separate the fibers.
The residue is washed and combed manually or mechanically to acquire mattress fiber. This fiber is then allowed to dry within the solar.
Ending of the fiber
Each bristle and mattress fibers are compressed by hydraulic press. In case of mattress fibers, they’re combed and packed right into a bundle of loosely coiled yarns whereas bristle fibers don’t require to be combed. Now these bundles of yarn could be spunned into desired merchandise by the producer.
Its Makes use of …
Coir is the pure fiber which has no impact of salt water on them. Thus are used for making fish nets and marine ropes. White coir is used is principally used for making ropes, mats, alternate for milled peat moss. Brown coir is used to for sacks, mattresses, brushes and doormats. Its pads are additionally helpful as erosion management software and cushioning of the upholstery utilized by sure vehicles corporations.
To learn extra articles on Textile, Vogue, Attire, Know-how, Retail and Normal please go to http://www.fibre2fashion.com/industry-article
Copyright © 2006
For those who want to obtain / republish the above article to your web site or newsletters then please embody the "Article Supply". Additionally, it’s important to make it hyperlinked to our website.