Skip to main content

Botanical classification of cotton fiber

Cotton is the seed hair of shrub plant which bears the botanical name GOSSYPIUM, a member of the Mallow family, cultivated as an annual plant. There are about 50 species of cotton plants however, only four of them have attained commercial importance.

1.   Gossypium Borbagense:
i)                   Plants are generally 6 – 15 ft. in height, yellow flowers.
ii)                Fiber length ranges from 38 to 102 mm.
iii)              Sea Islan , egyption cotton and American cotton belong to this class.

2.     gossypium harbaceum:
i)                   The plants are like bush and generally 3 – 6 ft. in high, yellow flowers.
ii)                Fiber length ranges 20 – 26 mm.
iii)              Indian and Chinese cotton belong to this class.  

3.     Gossypium Hirsutum:
i)                   Plants are usually 6 ft. in height, red flowers.
ii)                Fiber lenght: long fiber ranges 28 – 32 mm and extra long fiber more than 32 mm.
iii)              South and North American, also known as Upland or Mexican, cotton belong to this class.

4.     Gossypium paruvianum:
i)                   Plants are generally 10 – 15 ft. in height, yellow flowers.
ii)                Average staple length ranges 25 – 40 mm and fibers are brownish yellow.
iii)              Originally South American cotton but Indian, Pakistani and Chinese cotton also belong to this class.

Comments

Popular posts from this blog

macro-structure of cotton fiber | Under a microscope cotton

Under a microscope a cotton fiber appears as a very fine, regular fiber, looking like a twisted ribbon or a collapsed and twisted tube. These twists are called convolutions there are about sixty convolutions per centimeter. The convolutions give cotton an uneven fiber surface, which increases inter-fiber friction and enables fine cotton, yearns of squatted strength to be spun. The appearance of the cotton fiber’s cross sections is referred as being kidney-shaped. The micro structure of cotton The cotton fiber is a single plant cell. Its cross-section is oval, compared with the normal hexagonal plant cell. Cotton has a district cuticle, well developed primary and secondary walls and a lumen. Layer 1 the cuticle is a waxy protective layer that provides water resistance to the fibers as they are growing. This lawyer is removed by scouring during processing before spinning.

Types of Yarn twist | different types of yarn twist | S twist | Z twist

Types of Yarn twist different types of yarn twist S twist Z twist“S” TWIST: A single yarn has “S” twist if when it is held in the vertical direction , the fibers inclined to the conform in direction of slope of the contact portion of the letter “S”. axis of the yarn “Z” TWIST. A single has “Z” twist if when it is held in the vertical direction, the fibers inclined to the yarn axis conform in the direction of the slope to the central portion of the letter “Z”. DIRECTION OF TWIST: In the designation of yarns, it is essential to specify the direction of twist. Besides its importance in simplifying the trade, it is of great technical importance in designing fabrics. For example, in a twill fabric, the direction of twist in the yarn is of particular importance in determining the predominance of twill effect. For a   right-handed twill, the best contrasting effect will be obtained when a yarn with Z twist is used; on the other-hand a left-handed twist will produce a fabric ha...

Definition of yarn | different types of yarn | class of yarn

A.         CABLED YARN :- These type of yarn are made by twisting together two or more multi folded plied yarns. In general, it is constructed by twisting the plied yarns around each other successively in the opposite direction the preceding twist, i.e. S/Z/S or Z/S/Z. As a result, the opposite twist direction cause the plies to grip each other and maintain adherence. These yarns are hard, rough and strong Example CORDS.   B.         SINGLE YARN :- It is the simplest continuous strand of textile material composed of the following:- i)                     Continuous Filament:- These type of yarn are simplest in structures but they can be subjected to different modifying processes to change their extensibility and other properties. They are of the following types: 1) Mono filament which contains only ONE filamen...