Retting sentence example
The various operations through which the crop passes from this point till flax ready for the market is produced are - (i) Pulling, (2) Rippling, (3) Retting, (4) Drying, (5) Rolling, (6) Scutching.
Retting or rotting is an operation of the greatest importance, and one in connexion with which in recent years numerous experiments have been made, and many projects and processes put forth, with the view of remedying the defects of the primitive system or altogether supplanting it.
From the earliest times two leading processes of retting have been practised, termed respectively water-retting and dew-retting; and as no method has yet been introduced which satisfactorily supersedes these operations, they will first be described.
To a large extent retting continues to be conducted in the primitive fashions above described, although numerous and persistent attempts have been made to improve upon it, or to avoid the process altogether.
He proposed to separate the fibre by purely mechanical means without any retting whatever; but after the Irish Linen Board had expended many thousands of pounds and much time in making experiments and in erecting his machinery, his entire scheme ended in complete failure.Advertisement
In connexion with improvements in retting, Mr Michael Andrews, secretary of the Belfast Flax Supply Association, made some suggestions and experiments which deserve close attention.
In brief, Mr Andrews' method consists in introducing water at the proper temperature into the retting vat, and maintaining that temperature by keeping the air of the chamber at a proper degree of heat.
It is also thought that the drying of the plants before retting facilitates the separation of the fibre.
Several other attempts have been made with a view of obtaining a quick and practical method of retting flax.
By this arrangement the flax is almost continually immersed in fresh water, a condition which hastens the retting.Advertisement
That the system of retting (Loppens and Deswarte's patent) is at least equal to the Lys, as to quality and yield of fibre produced."
It is thereafter once more tied up, placed in the crates, and sunk in the river to complete the retting process; but this double steeping is not invariably practised.
The fibre is separated from the stalks by a process of retting similar to that for flax and hemp. In certain districts of Bengal it is the practice to stack the crop for a few days previous to retting in order to allow the leaves to dry and to drop off the stalks.
It is stated that the colour of the fibre is darkened if the leaves are allowed to remain on during the process of retting.
Any simple operation which improves the colour of the fibre or shortens the operation of retting is worthy of consideration.Advertisement
The benefits to be derived from the above process, however, cannot be great, for the bundles are usually taken direct to the pools and streams. The period necessary for the completion of the retting process varies according to the temperature and to the properties of the water, and may occupy from two days to a month.
After the first few days of immersion the stalks are examined daily to test the progress of the retting.
The time of sowing, the quantity of seed per acre (about three bushels) and the method of gathering and retting are very similar to those of flax; but, as a rule, it is a hardier plant than flax, does not possess the same pliability, is much coarser and more brittle, and does not require the same amount of attention during the first few weeks of its growth.
This study investigated one aspect of the retting process, the dissociation of these fibers from the core of the stem.