Anti-Microbial Fibres and Their Production

a technology of anti-microbial fibres and lyocells, which is applied in the direction of yarn, chemistry apparatus and processes, transportation and packaging, etc., can solve the problems of inability to use triclosan, and inability to absorb triclosan, etc., to achieve effective dispersion
US20070243380A1Inactive Publication Date: 2007-10-18LENZING AG
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
LENZING AG
Publication Date
2007-10-18
Estimated Expiration
Not applicable · inactive patent
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Abstract

Anti-microbial lyocell fibres incorporate an anti-microbial composition which comprises a silver compound deposited on a support material in the form of porous particles having an extended surface area and comprising an oxidic material which is essentially insoluble in water and incapable of forming hydrates. A preferred composition is silver chloride on titanium dioxide particles. The anti-microbial effect is durable to processing and the fibres are not adversely discoloured. Low concentrations of the anti-microbial composition of below 0.1 percent by weight on weight of cellulose may be used. In the process of making the fibres, the anti-microbial composition preferably is added to the pasty pre-mix of the spinning solution.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates to anti-microbial lyocell fibres which can impart qualities of freshness and hygiene to fabrics made from the fibres. It also relates to a process for making such fibres. BACKGROUND ART

[0002] There is an increasing interest in fabrics offering qualities of improved hygiene and freshness, for example for use as clothing, and also in fabrics having better protection from deterioration caused by microbes.

[0003] One way of achieving this is to apply anti-microbial agents to the fabric, for example as a finishing treatment. Another way, offering greater commercial flexibility, is to provide fibres that are already anti-microbial, by virtue of having an anti-microbial agent applied to or incorporated into the fibres.

[0004] Many organic anti-microbial agents have been used or proposed for use on fibres, including triclosan, biguanides, phenols and derivatives, isothiazolones, quaternary ammonium salts, tri-butyl tin oxide, halo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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