Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Deodorizing
Patent
1998-12-28
2000-10-31
McKane, Elizabeth
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Deodorizing
36 43, 424404, A61L 9012, A43B 1338, A01N 2534
Patent
active
061397954
DESCRIPTION:
BRIEF SUMMARY
The invention relates to the use of a material based on microporous, filler-containing polyolefin for absorbing sweat and other bodily exhalations and for avoiding formation of odour.
Living beings, in particular humans, excrete sweat and other bodily exhalations which lead to an unpleasant formation of odour. A typical example of this are the known sweating feet which lead to an unpleasant formation of odour in footwear. Similar problems exist in other areas of the body and the clothing which covers these areas of the body.
In the past, there has accordingly been no lack of proposals for materials which are said to lead to avoidance or reduction of body odours. Thus, for example, WO 88/03765 discloses a perspiration insert for articles of underwear or clothing which has a skin-friendly absorbent layer of a paper nonwoven, fibre nonwoven, felt, cellulose, cellulose nonwoven or a woven fabric of wool or cotton and a thin outer layer which is impermeable to water, the absorbent layer comprising microencapsulated fragrances and/or microencapsulated active compounds which destroy sweat and/or inhibit the formation of sweat. DD-PS 230 419 furthermore discloses an inner sole of a composite of an extruded polyolefin foam with a textile and with an antimycotic and/or odour-improving treatment, which has, on one or both sides, a compact flexible barrier layer with particular physical parameters of a thermoset, thermoplastic, lefa or of compacted polyolefin foam, which is bonded or glued thermally with the polyolefin foam. DE-A-33 06 843 furthermore discloses absorbent products with an integrated arrangement of a backing layer which is impenetrable to liquid, an absorbent medium on this, and a layer which is penetrable to liquid and lies on the absorbent layer. The backing layer comprises a porous film which is penetrable to vapour and impenetrable to liquid and is produced by mixing 100 parts by weight of a polyolefin resin, 28 to 200 parts by weight of filler particles and 10 to 70 parts by weight of a liquid or wax-like hydrocarbon polymer or a liquid rubber and shaping the mixture to a film. This is then subsequently stretched by 1.2 times the original dimension in at least one surface direction to form fine pores in the film. This absorbent product is preferably a disposable nappy or a sanitary towel.
In contrast, it has now been found, surprisingly, that a material which has already been used for decades as a battery separator in accumulators and batteries is excellently suitable for combating unpleasant odours which are formed by sweat and other bodily exhalations.
The invention accordingly relates to the use of a material which is based on microporous, filler-containing polyolefin and essentially consists of a homogeneous mixture of 8 to 100 vol. % polyolefin having a molecular weight (weight-average) of at least 300,000, a standard load melt index of substantially 0 and a reduced viscosity of not less than 4.0, 1 to 92 vol. % filler and 1 to 40 vol. % plasticizer, for absorbing sweat and other bodily exhalations.
The invention furthermore relates to shoes, articles of clothing, underlays, linings, inserts and parts thereof which comprise the abovementioned material based on microporous, filler-containing polyolefin or consists of this.
Preferred embodiments and advantages of the invention can be seen from the following description and the sub-claims.
Although the material used according to the invention is obviously suitable for a large number of uses and can be adapted to these uses in its construction, the main field of use is currently in the shoe sector, in particular as soles or inner soles. The invention is therefore explained below chiefly with the aid of this preferred embodiment, without this being interpreted as a limitation.
As already mentioned above, the material used according to the invention which is based on microporous, filler-containing polyolefin has already been known as a battery separator material for a long time and is described in detail in U.S. Pat. No. 3,351,495 and the correspond
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Gaillard Claude
Meyer Jacques
Daramic, Inc.
McKane Elizabeth
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