Home / Knowledge / News / Textiles / Cross-section techniques for fibers & yarns
Cross-section techniques for fibers & yarns
03
Jun '09
Fiber identification is one of the most important—and arguably one of the most difficult—analyses in the world of textiles. Fiber content can determine import duties, care instructions, price point, and product performance.

And sometimes, the best way to identify a fiber is by its cross-section (the end-view). With a few simple supplies, you can view fiber cross-sections and compare them to known fibers in American Association of Textile Chemists and Colorists (AATCC)Test Method (TM) 20, Fiber Analysis, Qualitative1 or your own fiber library. Of course, both creating useful cross-sections, and using them to identify fibers, take plenty of practice.

Plate Method
TM20 offers two basic methods for cross-section preparation. The first uses a cross-sectioning plate. Fibers are inserted through small holes and trimmed flush with the plate.

The test method mentions a stainless steel plate and copper wire, but a plastic plate and a needle threader (see photo, right) work just as well.

Embedded Method
In the second method, an “embedded” cross-section is created by applying collodion to a bundle of fibers. Collodion is nitrocellulose in alcohol and ethyl ether that creates a sticky film around the fiber bundle, making it easier to handle and slice (think bugs trapped in amber).

For a simplified version of this method, a small cork can take the place of the collodion. Fibers are pulled through the cork using a sewing needle. Slices of the cork are placed on a microscope slide for examination.

Filler Yarn
You only need a few short fibers for microscopic analysis, but that may not be enough to fill a hole in the cross-section plate or thread through a needle. To do these things, you may need a “filler” or “carrier” yarn. The yarn is used to pull the fibers through the plate or the cork.

Since the filler fibers will appear in the cross-section along with your other fibers, it's a good idea for the two to be as different as possible. Choose a filler color that contrasts with the color of the fibers you want to examine. The AATCC microscopy kit includes both black and white yarns for this purpose. Ideally, the fiber shapes should be different as well. AATCC filler yarns have a distinctive triangular cross-section that will not be confused with most other fibers.

American Association of Textile Chemists and Colorists (AATCC)

Must ReadView All

Courtesy: Myntra

Apparel/Garments | On 3rd Dec 2016

Myntra to be EBITA positive by FY18: CEO Narayanan

Myntra is on track to achieve sustainable growth and be EBITA...

Courtesy: India ITME Society

Textiles | On 3rd Dec 2016

India ITME 2016 opens with over 1050 exhibitors

The India International Textile Machinery Exhibition (India ITME)...

Courtesy: Bruckner

Textiles | On 3rd Dec 2016

Indian textile companies opt for Brückner stenter lines

Indian textile firms Laxmipati Sarees, makers of polyester sarees and ...

Interviews View All

Pinkesh Jain
Everflow Petrofils Ltd

‘An innovative technology which India needs desperately is the...

Dinaz Madhukar
DLF Emporio and DLF Promenade

‘Each event and promotion is planned out keeping in mind the business of...

Sanjay Yagnik
Maa Tex Speciality

‘We suggest reducing dosage of sizing chemicals to reduce sludge...

Giorgio Mantovani
Corman S.p.A

Giorgio Mantovani, MD of Corman, with a presence in both Milano and New...

Paolo Ocleppo
Sandvik Hyperion

Paolo Ocleppo, Rotary Cutting Segment manager, Sandvik Hyperion discusses...

Iago Castro Asensio
RCfil Distribuciones S.L.

Iago Castro Asensio, International Business Manager of RCfil...

Robert Brunner
Devereux

Golfwear and menswear brand Devereux is set for greener pastures. Robert...

Jay Ramrakhiani
Occasions Elegance Wear

It is believed that by early 19th century, Varanasi weavers had moved away ...

Mike Hoffman
Gildan Activewear SRL

Gildan Activewear, a manufacturer and marketer of branded clothing and...

Press Release

Press Release

Letter to Editor

Letter to Editor

RSS Feed

RSS Feed

Submit your press release on


editorial@fibre2fashion.com

Letter To Editor






(Max. 8000 char.)

Search Companies





SEARCH
December 2016

December 2016

Subscribe today and get the latest update on Textiles, Fashion, Apparel and so on.

SUBSCRIBE


Browse Our Archives

GO


Advanced Search