How to measure and analyse the texture of food, cosmetics, pharmaceuticals and adhesives.

Tuesday, 2 May 2017

Hosiery put to the test!

A pair of tights is usually put on with a certain amount of stretching, and fingernails or jewellery often snags on a single thread that will turn into a run or “ladder” once the leg is applying stress to the tights. 

Additionally, a ladder may be caused during the working day, such as a snag occurring when the tights are pushed against the underside of a desk. This can greatly inconvenience the wearer as it appears unprofessional and they may not have a spare pair. It can also be expensive.

As the manufacturer, the brand will appear low quality if a ladder forms too easily. It is difficult to avoid causing snags throughout the day, so the real test is the stress at which the snag turns into a ladder. We looked at this in a “mini study”; snags were deliberately introduced in a controlled manner and a stress applied to specimens of uniform size.

‘Denier’ refers to the linear density of the yarn used in manufacture. It is equal to the number of grams per 9000 metres. It is an archaic measurement but one that is widely known to consumers and a standard they can trust when they shop for hosiery.

A sample of fabric was cut from the main body of tights, ensuring tension was never applied. To induce laddering, three individual threads were cut, evenly spaced along the centre line. This sample was put under tension and the test filmed.

Using a Video Capture & Synchronisation System, the test performed on the TA.XTplus Texture Analyser obtained both force and video profiles allowing a frame by frame understanding of the ladder development.

We can design and manufacture probes or fixtures for the TA.XTplus texture analyser that are bespoke to your sample and its specific measurement.

Once your measurement is performed, our expertise in its graphical interpretation is unparalleled. Not only can we develop the most suitable and accurate method for the testing of your sample, but we can also prepare analysis procedures that obtain the desired parameters from your curve and drop them into a spreadsheet or report designed around your requirements.

For more information on how to measure texture, please visit the Texture Analysis Properties section on our website.

TA.XTplus texture analyser with bloom jar The
TA.XTplus texture analyser is part of a family of texture analysis instruments and equipment from Stable Micro Systems. An extensive portfolio of specialist attachments is available to measure and analyse the textural properties of a huge range of food products. Our technical experts can also custom design instrument fixtures according to individual specifications.

No-one understands texture analysis like we do!

To discuss your specific test requirements click here...

Watch our video about testing of materials Putting Packaging to the Test
 Materials and Packaging Testing

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