Anti-microbial fiber and fibrous products

a fiber and fibrous technology, applied in the field of products, can solve the problems of compromising cell wall processes including basic transportation processes, product cannot be labeled 100% cotton, and can no longer be used to label 100% cotton, etc., and achieves the effect of being highly resistant to washing or wearing off and being effectiv

Inactive Publication Date: 2005-01-06
FOSS MFG CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0045] It is an object of the present invention to provide anti-microbial agents that are effi...

Problems solved by technology

However, many do not have such properties, or the properties do not remain for the life of the product, or they have adverse environmental consequences.
Use of zeolite preventing bacterial infections and rashes in mammals may compromise cell wall processes including basic transport processes.
The solution dyed polyester has a disadvantage in that the product can no longer be labeled 100% cotton.
The stock dyed cotton has the disadvantage in that it is not color fast, especially to bleach, and that it needs to be passed through a dye bath.
The disadvantage of these organic agents when used as anti-microbial agents is that bacteria can develop a resistance to their action.
Thus, one is faced with the emergence of bacterial strains that are no longer affected by these anti-microbial agents which negates the function of these materials, and is harmful to humans since they are resistant to antibiotics.
Sheet materials for various uses are vulnerable to the seeding of bacteria and fungi from various sources, thus providing hospitable sites for their uninhibited growth.
However, most prior art approaches of providing sheet materials with anti-microbial or anti-fungal agents have limited effect.
However, these materials have two inherent commercial disadvantages.
First, while the anti-microbial agents incorporated into them do show some resistance to repeated washings, these agents do leach out of the materials, primarily because they are not physically incorporated into them.
In fact, in many cases, the anti-microbial agents are only loosely bound into the material and are relatively easily washed away or naturally abraded away over time.
On the other hand if the agents are buried too deeply in the material or homogeneously distributed they will not contact microbes at all an...

Method used

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  • Anti-microbial fiber and fibrous products
  • Anti-microbial fiber and fibrous products
  • Anti-microbial fiber and fibrous products

Examples

Experimental program
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Effect test

example 1

[0130] The anti-microbial fiber of the present invention was used in the making of a mattress pad. In this example, 15% of a 6.7 denier 76 mm cut length natural white fiber was used as a homofilament with zeolite of silver as the anti-microbial agent and 15% of a bi-component fiber was used together with 70% PET 6×3 T295 in a blend in which the zeolite of silver comprised 0.9% of the fiber. The blend of this fiber was made into a batt of about 1-1½″ thickness of nonwoven material which was then placed between two layers of woven fabric to form a mattress pad. When tested using the shake flask test this provided a 99.99% microbial kill ratio.

[0131] There are other examples in which all of the parameters of Example 1 were used and in each of which there was 15% of a bi-component fiber used. Again the zeolite of silver comprised 0.9% of the fiber. The percentage of the anti-microbial fiber ranged from 20% to 40% and the PET ranged from 45% to 65%. In all examples the microbial kill ra...

example 1a

[0132] In this example, 35% of a 6.7 denier 51 mm cut length natural white fiber was used in a sheath / core bi-component configuration with zeolite of silver as the anti-microbial agent and 15% of another bi-component fiber was used together with 50% PET 6×3 T295 in a blend in which the zeolite of silver comprised 1.8% of the fiber. The blend was then prepared as in Example 1 and when tested using the shake flask test, there was a 99.9% microbial kill ratio.

[0133] A second group similar to the first one was prepared in which the sheath / core bi-component fiber with zeolite of silver as the anti-microbial agent comprised from 10 to 35% of the fiber blend, 15% of another bi-component fiber was used and from 50 to 75% of PET 6×3 T295 was used. The zeolite of silver comprised 0.75% of the fiber. In the shake flask test, there was a 99.99% microbial kill ratio.

example 2

[0134] In this example, 15% of a 3.5 denier 38 mm cut length PETG fiber was used as a homofilament with zeolite of silver as the anti-microbial agent. 85% PET fiber was blended with the PETG anti-microbial fiber to form a blend in which the zeolite of silver comprised 1.8% of the fiber. The fiber was made into a wall covering and was tested by the shake flask test, which provided a microbial kill rate of 99.99%

[0135] A modified version was prepared the same way except that there was only 10% fiber with zeolite of silver in the blend and 90% PET fiber was used. After the fiber was made into a wall covering, this too provided a 99.99% microbial kill rate using the shake flask method of testing.

[0136] A further modified version was used in which there was only 5% fiber having zeolite of silver in the blend and 95% PET fiber in the blend. The testing, after the fiber was used in a wall covering, again provided a 99.99% microbial kill rate for bacteria.

[0137] The fibers described abov...

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Abstract

An anti-microbial and/or anti-fungal synthetic fiber and laminate products made partially or wholly therefrom. The fiber comprises various thermoplastic polymers and additives in a mono-component form or a bi-component form in either a core-sheath or side-by-side configurations. The anti-microbial synthetic fibers comprise inorganic anti-microbial additives, distributed in certain areas to reduce the amount of the anti-microbial agents being used, and therefore the cost of such fibers. The fibers comprise high tenacity polymers (e.g. PET) in one portion and hydrolysis resistance polymers (e.g. PCT) in another portion with the additives. The fibers can further be blended with non-anti-microbial fibers such as cotton, wool, polyester, acrylic, nylon etc. to provide anti-microbial finished fabrics. In one embodiment, binder fibers are used which are mixed with other fibers.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application is a divisional application of Ser. No. 09 / 565,138 filed May 5, 2000 which claims the priority of the following provisional applications: Ser. No. 60 / 136,261, filed May 27, 1999; Ser. No. 60 / 173,207, filed Dec. 27, 1999; Ser. No. 60 / 172,285, filed Dec. 17, 1999; Ser. No. 60 / 172,533, filed Dec. 17, 1999; Ser. No. 60 / 180,536, filed Feb. 7, 2000; Ser. No. 60 / 181,251, filed Feb. 9, 2000; and Ser. No. 60 / 180,240, filed Feb. 4, 2000.FIELD OF THE INVENTION [0002] The present invention relates generally to products having anti-microbial (and / or anti-fungal) properties which remain with the product after repeated launderings / uses. More specifically it provides laminate materials that are made of a wholly thermoplastic stiff reinforcing multiple laminate moldable into compound shapes and bondable via a thermoplastic hot melt adhesive to a carrier surface to be reinforced and suitable for footwear. BACKGROUND OF THE INVENTI...

Claims

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Application Information

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IPC IPC(8): A01N57/16A41B17/00A41D31/00A61F13/15A61L2/238A61L15/46B01D39/16B01D46/00B32B27/12D01F1/10D01F8/12D01F8/14D02G3/36D02G3/44
CPCA01N57/16Y10T428/26A41B2400/60A41D31/00A41D31/0077A41D2400/60A61F2013/8414A61L2/238A61L15/46A61L2300/104A61L2300/404B01D39/1615B01D39/1623B01D46/00B01D46/0028B01D46/521B01D2275/10B32B27/12D01F1/103D01F8/12D01F8/14D02G3/449A41B17/00Y10T428/2907Y10T428/2924Y10T428/251Y10T428/2929Y10T428/2933Y10T428/298Y10T428/25Y10T428/2915Y10T428/2904Y10T428/2931Y10T428/2913A01N59/16A01N25/34A01N2300/00A61F13/8405A41D31/12Y10T428/249924Y10T442/30Y10T442/3073Y10T442/3146Y10T442/3154Y10T442/444Y10T442/637Y10T442/638Y10T442/64Y10T442/641Y10T442/659Y10T442/674Y10T442/69Y10T442/692Y10T442/697Y10T442/699B32B5/02B32B5/26B32B27/18B32B27/302B32B27/306B32B2262/0276B32B2262/0284B32B2264/10B32B2305/20B32B2305/70B32B2307/558B32B2307/7145B32B2367/00B32B2437/02
Inventor FOSS, STEPHEN W.
Owner FOSS MFG CO LLC
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