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What is "Orientation" - Definition & Explanation

a) The degree of parallelism of fibres, usually as a result of a combing or attenuating action on fibre assemblies that causes the fibres to be substantially parallel to the main axis of the web or strand.

b) A preferred direction of linear molecules in the fine structure of fibres and usually caused by so stretching an extruded fibre that the length direction of the molecules tends to lie parallel to the main axis of the fibre.

c) In the case of natural fibres, a preferred direction of linear molecules laid down during growth, e.g. a spiral around the fibre axis in cotton.

The alignment of the crystalline structure in polymeric materials so as to produce a highly uniform structure. Orientation can be accomplished by cold drawing or stretching during fabrication.

Some other terms

Some more terms:

The property of fibers that measures strength. This is determined by the force required to rupture of break the fiber. Typically, this is measure is grams per denier, or g/d. Tensile strength measres...
Fabrics made from only one set of yarns, all running in the same direction. Some knits have their yarns running along the length of the fabric, while others have their yarns running across the width...
A nubby, soft fabric made from recycled soda bottles. Every time you purchase something from eco-fleece you are contributing to saving another piece of the earth, which would otherwise be used as...
Cotton, and sometimes silk, in a Leno, gauze, knotted, or mesh weave. First made in France in 1834, it has a dull surfaced net with various sized holes. Has white or colored dots individually spaced...
A lightweight plain weave cotton fabric with a striped, plaid, or checked pattern. A true madras will bleed when washed. This type of fabric is usually imported from India. End-uses are men's and...

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