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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 force necessary to tear a fabric, measured by the force necessary to start or continue a tear in a fabric. Expressed in pounds or in grams, the most commonly used method for determining the tear...
A chemical process in which short fuzzy fibres are sealed into a yarn or are removed from the cloth to make the fabric more porous. The strength of the fabric is not impaired. A porous fabric permits...
A loose, sleeved coat-like garment worn over an inner garment like the angarakha (q.v.), generally sumptuous and appropriate for ceremonial occasions. Of Turkish origin, the chogha was also known as...
Decorative strip above window: a narrow piece of fabric or board attached above a window for decoration and to hide the curtain rod. Early 20th century. Probably alteration of French palmette...
Strands of YARN that are left threaded through the various parts of a textile machine and to which new strands of YARN to be processed are attached, thus eliminating the necessity for threading the...

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