Microtex: Fibre & Textile analysis & examination

Anti-stain finish on wool fibre

Also Dusts, Papers, Particles, Contaminants

   

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35 Years Experience
in Textile Microscopy
and Materials


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Colour bleeding from contaminant on cotton

.Image recording for reports and evidence

Contamination

 

The presence of contaminant materials in textiles usually takes one of two forms; Either the unwanted component is suspected in the raw material, which it will devalue, (e.g. wool contamination in cashmere) or the contaminant passes unnoticed through processing until the final product is dyed or finished, where it becomes immediately obvious (e.g. polyolefin contamination in natural fibre materials.

The presence of contaminants can devalue products and materials to a significant degree. In textiles, such contaminants may be incompatible fibres, raw material irregularities or foreign matter. For other products, metals, plastic components, webs etc., the contaminant may be of an isolated particulate nature, or a surface coating. Using light and electron microscopy such contaminants may be identified and their likely origins suggested;

 

Examples of contaminants in textiles and other materials may be;

Dark hairs, polyolefin packing materials, vegetable matter, extraneous fibre types, non-fibrous matter, oxidation products or moulds, extraneous coatings which impair processes (e.g. cause dye resists), localised damaged areas and fugitive tints.

 

 

Micrography

 

For many reports or demonstrations, photo or electron micrographs are and invaluable means of supplementing written descriptions. A series of magnified images of a feature or product can offer indisputable proof of the subject under study. The understanding of an effect or a structure can be greatly enhanced by having pictorial images to supplement written or spoken descriptions. Light micrographs can show colour effects, internal structures and reflected light features, while scanning electron micrographs (SEM) are able to show surface features in great depth of field and with superior resolution. The SEM can also be used to obtain elemental information and it is possible to produce ‘x-ray maps’ of the composition of a material or surface.

Areas where such pictures may be of value include;

Demonstration or teaching, legal evidence, advertising and publicity, forensic science, report supplements.

 

 
Fruiting bodies of microbes
IR spectrum of contaminant on yarn
Enzyme damage of laundry
Surface of upholstery fabric
Microtex Reports are used by Manufacturing Industry,
Test Houses, Retailers, Private Consumers, Trading Standards,
Lawyers, Insurance Assessors

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