Textile Testing

Textile

In today’s competitive market consumers pay more attention to the quality of material and fibres beyond their cost and charges. Therefore textiles need not to be only stylish but also consistently well made and free from hazardous substances.

Middle East Testing Services  has complete in house facility to execute various jobs related to Textile Testing. METS textile testing lab is adequately equipped with the latest sophisticated analytical instruments and a team of competent & experienced laboratory technicians to provide accurate & meaningful testing services for a wide variety of textile samples in strict accordance with various National & International Testing Standards & Specifications.

We are performing the following tests as per New SABER Regulation (SASO – GSO- 1957)

  • Determination of the content of pesticides
  • Extractable heavy metals
  • Phenols
  • PVC Plasticizers
  • Organic tin compounds
  • Colourants
  • Treatment with reterdants substances
  • Emission of volatiles
  • Determination of odour
  • Azo dyes
  • Carcinogenic amines
  • Herbicides & Fungicides
  • Flame retardants
  • Chlorinated Organic Compounds
  • Phthalates
  • Fibre composition

For Further Readings:

BREAKING LOAD:- The maximum force in Newton required to break the fabric.
Test Method:- ASTM  D5034.

ELONGATION:- The difference between the length of a stretched specimen at breaking load and its initial length usually expressed as percentage of the latter.
Test Method:- ISO  13934-1 : 2013.

TEAR RESISTANCE:- The force in Newton required to tear a specimen. 
Test Method:- ISO  13937-1 : 2000.

BURSTING STRENGTH:- The maximum fluid pressure is applied to a circular specimen for distending it to rupture. Test Method:- IS0  13938-1 : 1999.

FLAMMABILITY:- The characteristics of a material which pertain to its relative ease of ignition & relative ability to sustain combustion.
Test Method:- ASTM  D6413.

MASS PER UNIT AREA:- It can be define as the mass in gram of one square metre of fabric.
Test Method:- ISO  3801 : 1977.

THREADS COUNT:- It can be defined as the number of threads in per unit length of fabric.
Test Method:- ISO  7211-2 : 1984.

DIMENSIONAL CHANGE OF FABRIC:- The increase or decrease in dimensions that occurs in the fabric or garments after the material is soaked in water and agitated for a short period under specified condition, expressed as a percentage of the corresponding dimension before the treatment.
Test Method:- ISO 5077 / 6330.

DIMENSIONAL CHANGE OF FABRIC (other than wool):- All woven and knitted fabrics change in dimensions on soaking in water without agitation.
Test Method:- ISO  5077 / 6033.

LINEAR DENSITY:-

  • Cotton Count System – The linear density of cotton yarn expressed as the number of 768.1m hanks per 453.6 gm.
  • Tex System – It can be defined as the mass in gram of 1 kilometer of yarn.

Test Method:- ISO  7211-5 : 1984.

CRIMP:- The difference between the straightened length of yarn and the length of yarn while in the cloth expressed as a percentage of the latter.
Test Method:- ISO  7211 -3 : 1984.

TWIST:- It can be defined as the number of turns about the axis of a yarn based on its nominal gauge length before untwisting. It should be preferably expressed as the turn per meter.
Test Method:- ISO  2061 : 2010.

 

COLOUR FASTNESS:- The fastness is assessed by comparing the change in colour of treated specimen to original sample of the fabric.

Type of Colour Fastness

  • Colour Fastness to Daylight:- A specimen of textile material is exposed to daylight under the prescribed conditions along with the standard patterns. The fastness is assessed by comparing the change in colour with that of the standard patterns.Test Method: IS0  105  B02 : 2014.
  • Colour Fastness to Washing:- A specimen in contact with one or two specified adjacent fabrics is mechanically agitated under specified conditions of time and temperature in a soap or, soap & soda solution then rinsed and dried. The change in colour of the specimen are assessed with reference to the original fabric with the grey scale.Test Method: ISO  105  C06 : 2010.
  • Colour Fastness to Organic Solvent:- A specimen in contact with adjacent fabric is agitated in organic solvent which is commonly used in cleaning or mill processing under specified conditions. The change in colour of the specimen is assessed with the original fabric with the grey scale.Test Method: ISO  105-X05 : 1994.
  • Colour Fastness to Perspiration:- The specimens in contact with two different solutions containing histidine, drained and placed between two plates under a specified pressure in testing device. The change in colour of the specimen is assessed with the original fabric with the grey scale.Test Method: IS0  105 – E04 : 2013.
  • Colour Fastness to Bleaching:- A specimen is agitated in a solution of Sodium Hypochloride, rinsed in water, agitated in a Hydrogenperoxide solution, rinsed and dried. The change in colour is assessed with the original fabric with the grey scale.Test Method: ISO  105 N01  : 1993.
  • IDENTIFICATION OF FIBRES:- Fibre identification is an important step in predicting the behavior of a textile artifact in various environments. Knowing the identity of the fibre(s) is also helpful in planning appropriate conservation treatment(s) and/or storage methods.Test Method:- ISO  1833-1 : 2006.

BLEND COMPOSITION:- To find out the amount of different fibres in the sample.
Test Method:- ISO  1833-1 : 2007.

CHLORIDE AND SULPHATE:- In textile industries, textile material undergo various treatments in course of which extraneous matter of various type as sizing or finish material water soluble salt (chlorides & sulphates) is gathered by or added to textile materials. Such water soluble substances if present in more than certain quantities, may have deleterious effects on the fibrous material.
Test Method:- ISO  22743 : 2006.

MOISTURE CONTENT:- When the sample of textile in any form such as yarn, fibre and fabric dried at 105 degree Celsius, the loss in weight express as the moisture content.
Test method:- IS0  17617 : 2014.

ASH CONTENT:- When the textile in any form such as yarn, fibre and fabric (which is dried previously) and ignited under prescribed condition and the residue is left express as the Ash content of the specimen.Test method:- ISO  3451-1 : 2015

IRON & CHROMIUM:- Iron and Chromium are present in large quantities in textile, dyed in mineral Khaki, mineral khaki dyed material is used mainly for defence and civilians as well for making uniforms. The Iron & Chromium content of the fabric would give an indication regarding the amount of mineral khaki present in the textile material.
Test Method:- ISO  17072-1 : 2011.

SOLVENT SOLUBLE MATTER:- A known amount of specimen extract with ethyl ether or benzene methanol mixture as solvent. Solvent is dried and residue is expressed as the percentage of the weight of the textile material.
Test Method:-ISO 4048 : 2018.

pH VALUE OF WATER EXTRACT:- The pH of aqueous extract of the textile affords a useful index to its processing history. In addition, it is becoming more common to demand that the textile in its various forms, shall confirm to certain limits in respect of its acidity or alkalinity often expressed in terms of pH values of aqueous extracts.
Test Method: ISO  3071 : 2005.

SCOURING LOSS:- In the cotton textile industries, yarn and fabrics undergo treatments in the course of which extraneous matter of various type is gathered by or added to the original material which if it is not scoured or is partly scoured may also contain natural impurities such as oil, fats, waxes and pectins.
Test Method:- IS0  1383 : 1977.

CARBOXYLIC ACID GROUP IN CELLULOSIC TEXTILE MATERIAL:- In the cellulosic textile industries, cellulose in the form of fibres, yarn and fabric comes in contact with different oxidizing agents during the various chemical processing treatments. The action of these oxidizing agents on cellulose may result in the formation of oxy cellulose of acidic character attributable to the introduction of carboxyl group into the cellulose chain molecule.
Test Method:- ISO:- 1061 : 1980.

BARIUM ACTIVITY NUMBER:- The ratio of the quantity of barium hydroxide absorbed by mercerized cotton to that absorbed by unmercerized cotton under identical condition multiply by 100.
Test Method:- IS: 1689 – 1973.

Formaldehyde in Textiles Formaldehyde is released by some textile finishes, such as those conferring crease resistance, while the garment is new. These finishes are most likely to be used on fabrics that otherwise crease easily, such as cotton or wool. Formaldehyde is very water soluble, and washing the new garments before wearing will generally reduce the amount of formaldehyde released from the fabric.
Test Method:- IS0  14184-1 : 2014.

OEKO – TEX 100 CERTIFICATE.

ZIP TESTING (BS: 3084) 
We are having testing facilities for all types of zips which are commonly used in dresses, knit wears, skirts, jeans, trousers, upholstery, lingerie, jackets, light leather goods, sleeping bags, light weight & inner tents, foot wears, leather garments, luggage and many more. Testing method:- ASTMD2061 – 07 : 2013