What Is High Volume Instrument In Textile Testing?

What is micronaire value?


Micronaire is a measurement of the thickness of the cell walls of cotton fiber and is used as an indication of fiber fineness and maturity.

When cotton begins to bloom, cells that will eventually form fibers elongate into the boll..

What is HVI?

According to the American Lung Association’s website, “poor indoor air quality can cause or contribute to the development of chronic respiratory diseases.” The Home Ventilating Institute (HVI) is a nonprofit association whose mission it is to raise awareness of the need for good ventilation and serve consumers and …

What is fiber fineness?

Fiber Fineness is one the most important fiber characteristics. The Fiber Fineness determines how many fibers are present in the cross-section of a yarn of given thickness. Minimum thirty fibers are needed in the yarn cross-section but there are usually hundred. … Fiber Fineness is measured in micronaire value (MIC).

What is maturity ratio?

It was shown that the maturity ratio measures the average degree of wall thickening of a cotton relative to the degree of thickening corresponding to a particular ‘standard’ level of maturity. … Cottons more mature ‘than the standard level give test values of the maturity ratio greater than unity.

What is HVI in textile?

A testing machine capable of measuring many cotton fiber properties including length, uniformity, micronaire/fineness, strength, color, etc.

What quality measures are considered for cotton?

Official USDA cotton quality classifications measure three factors: grade, staple, and micronaire (10). 1/ Grade depends on the color, trash content, and preparation (smoothness) of the sample. Staple is the average length of the individual fibers. Micronaire is a measure of fiber fineness and maturity.

What is the best grade of cotton?

WhiteColor GradeSymbolsLeaf GradeGood MiddlingGM1Strict MiddlingSM2MiddlingMid3Strict Low MiddlingSLM43 more rows

How can you tell the quality of fabric?

How to Check Fabric QualityDifferent Fabrics, Different Standards.Fiber Weave. High-quality fabrics feature fibers that are closely and tightly woven together. … Color. A good quality fabric should have a dye job to match. … Thread Count. This refers to the number of thread strands per inch. … Finish. … Price. … Finished Product. … Source.

What is RD value in cotton?

Instrument colour in cotton classification is measured in units of reflectance (Rd) and yellowness (+b). Rd indicates how bright or dull a cotton sample is and +b indicates the degree of yellow colour pigmentation.

What is Fibre maturity?

Fibre maturity (in case of Cotton Fiber) is a fibre characteristic which expresses the relative degree of thickening of the fibre wall. … The fibre maturity is usually estimated by several indirect tests which are foten used to find out the proportion of fibres containing a maturity greater than some selected level.

What is AFIS in textile?

AFIS is a modular device intended for testing and analysing of 100% cotton samples in the form of bale, opened and cleaned material (card mat), sliver and roving. This device belongs to high-efficiency testing lines frequently called HVI (high volume instrument).