CPC Definition - Subclass D01B
This place covers:
The extraction of staple fibres, i.e. fibres of limited length, from natural materials like the seeds, leaves or stalks of plants or from silk.
Attention is drawn to the following places, which may be of interest for search:
In this place, the following terms or expressions are used with the meaning indicated:
Fibre | a relatively-short, elongated member of natural or artificial material |
Filament | an endless or quasi-endless, elongated member of natural (e.g. silk) or artificial material |
Yarn | a unitary assembly of fibres, usually produced by spinning |
Thread | an assembly of yarns or filaments, usually produced by twisting |
This place covers:
The process steps used in separating fibres from the seeds (mainly cotton) and stalks or leaves (mainly flax or hemp) of plant material.
In this place, the following terms or expressions are used with the meaning indicated:
Stalk | the main stem of a herbaceous plant. |
This place covers:
The initial separation of harvested fibres and seeds in so called ginning machines.
In this place, the following terms or expressions are used with the meaning indicated:
Ginning | the process of separating cotton fibres from their seeds and other agricultural waste |
This place covers:
An early stage process of pulling the dry flax plants through coarse combs for removing the seeds from the stalks.
In this place, the following terms or expressions are used with the meaning indicated:
Rippling | the process of removing the seeds from the flax stalks |
This place covers:
The mechanical separation of fibres from the wood of the stalks.
In this place, the following terms or expressions are used with the meaning indicated:
Scutching | the process whereby the woody portion of the stalks is removed by crushing them between two metal rolls |
This place covers:
Only the drying methods and apparatuses of fibres obtained from retting.
In this place, the following terms or expressions are used with the meaning indicated:
Retting | a process employing the action of bacteria and moisture on stalks (e.g. flax stalks) to dissolve or rot away much of the cellular tissues and gummy substances (i.e. pectin) surrounding bast-fibre bundles (i.e. fibre loosening). Basic methods include natural retting (i.e. dew retting or water retting) or chemical retting. |
This place covers:
The combing out of flax or hemp fibres by hackling devices, that perform a discontinuous linear combing movement (i.e. by combs that get finer and finer) to separate stalk remains from the fibres.
This place covers:
The extraction of silk filaments from silkworm cocoons, and their conversion into staple fibres.
Silk being commonly classified as a "natural fibre" is actually a continuous filament.
This place covers:
The unwinding of silk cocoons to gain the silk filament.
This place covers:
Other mechanical treatment of natural fibrous or filamentary material to obtain fibres or filaments (e.g. fibre content determination, colour alteration at fibre processing level).