ja_mageia

MOST IMPORTANT TEST

 General fibre testing – The main tests to be carried out on natural or synthetic fibres are Fibre delicacy, Length, Traction resistance and Length of breakage, Constancy etc

 General thread testing – Title, Twisting, Filament count, Traction resistance and Length of breakage, thread shrinkage within a skein, Constancy etc.

  General fabric testing – Densities, Ligaments, Titles, Traction resistance and Length of breakage, Tear resistance, Resistance to thread slip. Stitching method, Resistance to traction in stitching, Pilling resistance, Determination of the degree of textile - Pochage -, Resistance to abrasion, etc.

  General Mat and Rug Testing – Tests carried out on floor coverings are concentrated on the following areas:

Resistance to pile separation: This test determines the strength needed to rip the pile from the base

Resistance to damage from chair legs: This test determines the reduction in thickness caused by the pressure from a chair leg in short duration tests.

Total thickness and thickness of the pile on the base: A test to determine the thickness of machine made floor coverings.

Pile: Test to determine the pile height in floor coverings.

Individual mass of components: This test is to determine the thread mass per surface unit on floor coverings that do not have stiffened backing.

Total mass per surface unit: A test to determine the total weight per surface unit.

Resistance to abrasion, Resistance to pilling, Mechanical step test. 

 General non-woven testing.

The main tests carried out on non-wovens are the following:

 Absorption: Three extremely important parameters are determined with this test, important for any non-woven, irrespective of the use for which it has been designed.

The three parameters are:

Absorption time: The time taken for a sample to completely absorb the liquid used in the test.

 

Absorption capacity: The quantity of liquid that a non-woven can absorb, expressed as a percentage, under fixed conditions and time span.

 

Absorption speed: A measure of the capillary capacity of a non-woven, the speed at which a liquid can pass through.

 Resistance to Traction and Length of Breakage. Dry and Wet test:

The method of testing determines the maximum necessary force as well as the maximum break lengthening of a non-woven up to the breaking point.

 

Thickness: This determines certain methods that can be used to measure the thickness of normal voluminous non-wovens which are subject to a known pressure.

Mass per surface unit: The test permits the verification of the mass per surface unit of a non-woven, expressed in gr/m2.

Length of fold: Describes the ease with which a non-woven can be folded.

Permiability to air: This test determines the quantity of air that crosses the textile by aspiration that forces air flow through a probe. The air flow is progressively adjusted until a drop in pressure is obtained.

Permeability to water: A test method that uses hydrostatic pressure to determine water penetration resistance in a material. This allows a measurement to be taken of the resistance to water flow through the filter.

Tear resistance: Determines the maximum strength necessary to rip the material at a previously made cut in the sample.

                                General tests on haberdashery

The most significant tests carried out on zips etc are the following:

 Lateral resistance.

 Lateral resistance after a permanent slippage test.
 Resistance of the bottom terminal.
 Resistance of the top terminal.
 Lateral resistance of the separador mechanism in open zips.
 Longitudinal resistance of the separador mechanism box.
 Resistance of the zip tab.

TEXTILE PHYSICS