EP1866476A1

EP1866476A1 - Textile product having particular functional properties for the skin and process for the preparation thereof

Info

Publication number: EP1866476A1
Application number: EP06728483A
Authority: EP
Inventors: Massimo Guarducci
Original assignee: Massimo Guarducci SRL
Current assignee: Massimo Guarducci SRL
Priority date: 2005-04-08
Filing date: 2006-03-13
Publication date: 2007-12-19
Also published as: ITMI20050592A1; WO2006106546A1

Abstract

A composition is described of a material having particular functional properties for the skin, characterized in that it comprises (i) one or more textile products and (ii) one or more cosmetic products, either in the form of a cream or in other cosmetic forms, suitable for protecting the skin and/or for enhancing its appearance, said cosmetic products (ii) being applied on said textile products (i). The preparation of said material composition and the finished clothes deriving there from, is also described.

Description

TEXTILE PRODUCT HAVING PARTICULAR FUNCTIONAL PROPERTIES FOR THE SKIN AND PROCESS FOR THE PREPARATION THEREOF The object of the present invention is a textile product, spun, woven, woven-non-woven fabric, an item of clothing, having particular functional properties for the sldn, characterized by the presence of one or more cosmetic products, both in the form of a cream and other cosmetic forms, suitable for protecting the sldn and/or for enhancing its appearance.

The existence is known of particular clothing items containing perfumes, anti-odour products, mosquito repellents, etc.. or other products. For example European patent 436,729 of the company Kanebo Ltd, relates to micro-capsules for the slow release of physiologically active principles with respect to the human body, and to particular clothing items containing said micro-capsules, which exert their slow release function only when the fabric is being worn; these mainly relate to underwear and night clothes. International patent application WO 0189458, of the company Sederma SA, describes fabrics and clothes, mainly tights, having a hydrating and refreshing effect for the sldn, thanks to the presence of micro-capsules englobing a product based on vegetable butter, which is topically released when the fabric comes into contact with the skin. These are obviously quite particular solutions relating to specific clothes, evidently unsuitable for clothes for every day use, sportswear and, in any case, linked to the amount of active principle present in the englobed micro-capsule, which significantly limits its effect, causing a deterioration in the specific property, which may have determined the choice of that particular fabric or item of clothing.

The Applicant has now found that it is possible to manufacture a textile product, spun, woven, woven-non-woven fabric, item of clothing, having particular properties useful for the treatment of the skin. In accordance with this, the present invention relates to a composition of a material having particular functional properties for the skin, characterized in that it comprises (i) one or more textile products and (ii) one or more cosmetic products, in the form of a cream or other cosmetic forms, suitable for protecting the skin and/or for enhancing its appearance, said cosmetic products (ii) being applied on said textile products (i). The cosmetic products of the present invention, either in the form of a cream or in another cosmetic forms, preferably in the form of a cream, are preferably selected from: a) Cosmetic products, either in the form of a cream or another cosmetic form, having an astringent function (for greasy skin), deodorant, for purifying the dermis and with an anti-microbial, action. b) Cosmetic products, either in the form of a cream or another cosmetic form, coad- juvants for the external treatment of cellulite, for example fluid cream for inaesthetic effects due to cellulite NATURAE GUNE'®. c) Cosmetic products, either in the form of a cream or another cosmetic form, having a toning, elasticising, skin restoring action, for example restoring cream based on karite NATURAE GUNE'®, almond oil cream NATURAE GUNE'®. d) Cosmetic products, either in the form of a cream or another cosmetic form, having a softening-emollient-smoothening action on the skin. Typical but non-limiting examples of these compositions are Calendula cream of the Line NATURAE GUNE'®, emollient cream NATURAE GUNE'®, and Supreme Cream BAMBINI SOUL®. e) Cosmetic products, either in the form of a cream or another cosmetic form, having a protective and/or reddening preventive action on the skin. Typical but non- limiting examples of these compositions are Zinc Oxide cream NATURAE GUNE'® and Diaper Rash Cream BAMBINI SOUL®, Blueberry Cream NATLTRAE GUNE'®, nourishing cream NATURAE GLTNE' ®. f) Cosmetic products, either in the form of a cream or another cosmetic form, capable of preventing and mitigating skin aging processes.

In the even more preferred embodiment, the cosmetic products, either in the form of a cream or another cosmetic form, preferably in cream form, are selected from (a) cosmetic products having an astringent action for greasy skin, (b) cosmetic products for the external treatment of cellulite, (c) cosmetic products having an elasticising and toning action on the skin.

These cosmetic products (a)-(c) usually contain, although in different ratios, vegetable hydrating factors, vegetable extracts, vegetable oils and vitamins. As far as the cosmetic products (a) are concerned, these consist of formulations suitable for contrasting excessive secretion of the sebaceous glands.

With respect to the cosmetic products (b), these consist of formulations suitable for contrasting the inaesthetic appearance of: orange-peel skin, local adiposity, cellulite. These formulations, moreover, are a great help for maintenance after radical cellulite- preventive treatment.

As far as the cosmetic products (c) are concerned, these consist of formulations particularly suitable for skin toning treatment.

Each cosmetic product used in the present invention must naturally have its specific characteristics. The cream for cellulite, for example, must have functional principles which act as a prevention for the inaesthetic appearance of orange-peel skin, local adiposity and cellulite. Furthermore, like all other cosmetic products of the present invention, it must be marked by a high fixing degree to fabrics and clothes. In this respect, the product known through its commercial name of "Fluid cream for in- aesthetic effects caused by cellulite" of the line NATURAE GUNE'®, produced by the company Massimo Guarducci SrI, is particularly suitable. This product, like all the other

_ O _ products of NATURAE GUNE' ® and BAMBINI SOUL® mentioned above, has the technical dossier required by the regulation 713/86 and dermatological tests for skin irritation.

The textile product of the present invention is selected from spun products, woven and woven-non-woven fabrics, ready-to-wear articles, either raw or previously dyed or dyed after manufacturing, preferably woven articles. In an embodiment, one or more cosmetic products are applied on a single side of the fabric.

After treatment with one or more cosmetic products, the above-mentioned textile products can be manufactured into any type of clothing having the above-mentioned functional properties for the skin. The above treated clothes maintain said functional properties for a long time, after several washings, for example, more or less after 15-20 washings.

The material composition according to the present invention can include additives known in the state of the art; it can be used for the most varied types of clothing, from children's clothes to sportswear, for clothes destined for lengthy contact with the skin and, in any case, for all those applications which combine skin protection with one or more functionalities.

The textile product used in the present invention can be produced starting from one or more spun yarns having different compositions, from artificial, synthetic or natural fibres.

As far as spun yarns are concerned, these can be used as such, or substances can be added, suitably selected according to the desired characteristics of the final fabric; by using the same treatment, the fabric obtained with the treated yarn will in any case have, in the end, the same characteristics as the treated fabric. As far as woven products are concerned, these can be of the traditional type or knitted fabrics.

A traditional woven fabric includes two elements, the warp yam, consisting of parallel yarns, and transversal wefts, produced with shuttle looms.

A knitted fabric, produced by means of so-called "circular" machines, only needs the presence of one yam, and either the weft or the warp can be used. In this case the knitting needle is fundamental, which allows the formation of curved networks made up of "stitches^'" which develop transversally (weft) or stitches which develop vertically (warp). The fabric is thus initially produced and therefore the yams used can be already dyed and coloured or non-dyed raw products.

The material composition according to claim 1 can be obtained according to several techniques, preferably according to the impregnation technique. By using this technique, me cosmetic product is used in an aqueous environment including one or more cosmetic products, emulsifiers, and other possible additives.

More specifically, the impregnation process for obtaining the material composition according to the present invention, envisages treatment of the fabric with an aqueous bath comprising one or more emulsifiers and the cosmetic product selected. In the preferred embodiment, the emulsifier is in an amount of 1 to 100 grams per liter, whereas the cosmetic product is partially as such and partially anhydrous. The cosmetic product as such, either in the form of a cream or another cosmetic form, is present in an amount of 1 to 200 grams per liter. The anhydrous part of the cosmetic product is present in a quantity of 1 to 100 grams per liter.

The process of the present invention is also adopted for the preparation of textile products having hydrating and refreshing properties for the skin, described in Italian patent application, in the name of the same Applicant, IT MI 2003 A 002213 of 14/11/2005. A textile article having said properties is prepared by treatment with one or more cosmetic products, both in the form of a cream or another cosmetic form, having hydrating and refreshing properties for the skin, particularly a hydrating cream based on aloe, of the line NATURAE GUNE' ®. Also in this case, the preparation conditions (emulsifϊer, cosmetic product as such or anhydrous) are the same as those mentioned above for the other creams.

The impregnation is carried out according to techniques known to experts in the field. In the case of woven fabric, both circular and shuttle, dyed or raw, the impregnation treatment is preferably effected by means of impregnation equipment called "foulard". The fabric passage rate can be regulated from 1 to 120 meters/minute and the retention degree of the treatment bath after squeezing between cylinders is given as a pK absorbing value or squeezing effect ranging from 50 to 100%. As a result of this effect, the foulard assures good penetration of the bath into the fabric. The bath temperature ranges from 20 to 100°C, the fabrics are dried in suitable machines, at a temperature ranging from 40 to 120⁰C.

Impregnation treatment on clothes made of dyed or raw fabric is preferably effected using the so-called "Dutch" machines or in drums similar to washing machines. After a treatment time of 1 to 120 minutes, the clothes are hydro-extracted by suction or cen- trifugation. The temperature of the bath varies from 20 to 100⁰C. They are subsequently dried in suitable machines at temperatures ranging from 40 to 120⁰C. Operations on yams, in the suitable form of spools or skeins, are carried out using appropriate dyeing tanks. In the case of spools, the treatment can be effected inwards- outwards or viceversa. The treatment temperature of the bath ranges from 20 to 100⁰C. In the case of skeins, skein dyeing equipment can be used called "pressure cabinet" with bath circulation from all sides, created by turbo-propellers rotating clockwise and anticlockwise, thus causing the flow circulation of the treatment bath. The bath temperature ranges from 20 to 100°C. The treatment time of the two previous examples can vary from 1 minute to 120 minutes, both the spools and the skeins are subsequently extracted and dried at a temperature ranging from 40 to 12O⁰C.

Other particular machines can also be used for the treatment of the yam, on spools or skeins, whereby a yam or many yams, depending on the spool-holder and skein-holder heads, unwind at a rate of 1 to 500 meters per minute and whereby they are impregnated with specific cream solutions at a temperature ranging from 20 to 100°C, squeezed and then impregnated with solutions of specific creams at a temperature within the range of 20-100⁰C, squeezed and dried by means of infrared rays or other equipment suitable for evaporating the water of the preparation bath of the cosmetic products. The application of creams to the textile product by means of the impregnation system allows a uniform distribution, which is also extremely stable to washing. It should be noted that the impregnation can also be effected during the finishing phase of the fabric.

In addition to the impregnation technique, the creams can be also advantageously applied by means of other known techniques, such as exhaustion or nebulization processes, spray-application or surface stratification by spreading or scraping. The blends of cosmetic products, both in the form of cream and other cosmetic forms, can be applied, using some of the above application techniques, on one side only of the fabric or on both sides: when applied on one side only, the method described in Italian patent application MI02A002513 filed on 27.11.2002 in the name of the same Applicant, can be advantageously used. The object of said invention relates to a method for the treatment of one of the sides of a flat-structured material having a large surface area and very small thickness with respect to the surface area, from a minimum working height (weft) to a maximum of 2.50 m, which, if necessary, can be wound to form a cy- lindrical roll both at the inlet (before treatment) and at the outlet (after treatment). The present invention also relates to items of clothing obtained, according to well- known techniques, starting from the material composition according to claim 1. Said clothes are preferably selected from items in contact with the skin. These clothes obviously have the same properties as the starting cosmetic products. It should be pointed out that the above description is provided for exclusively illustrative and non-limiting purposes. Possible variations and modifications of the invention should therefore be considered as forming part of the definition and objectives of the present invention, as described and claimed hereunder.

The following examples are provided for a better understanding of the present invention.

EXAMPLES

Example 1. Fabric treatment with cream for inaesthetic effects caused by cellu- lite

5 kg of NATURAE GUNE' ® cream were prepared for inaesthetic effects caused by cellulite. The preparation was effected with a turbo-emulsifier, following the usual procedure for this kind of production.

The fabric used for the test is 100% white-coloured cotton, previously treated as follows:

* 5 g/1 Livel Super AM 05 (textile auxiliary) for 30 minutes at 40°C, dried at 100⁰C and then dry-cleaned.

A sample of fabric (0 holes) is collected to effect a Soxlet extraction (fabric "A") with methylene chloride for 4 hrs whereas the remaining part is used for treatment with the cream; the formulation of the bath is as follows:

• 150 g/1 cream for cellulite inaesthetic effects NATURAE GUNE'® • 30 g/1 emulsifier

• 30 g/1 cream for cellulite inaesthetic effects NATURAE GUNE' ® in anhydrous form.

A sample of the fabric after treatment is kept aside (1 hole) for effecting a Soxlet extraction (fabric "B") with methylene chloride for 4 hrs, whereas the remaining part is subjected to a series of washings.

A sample of the fabric is kept aside, after 5 washing cycles (2 holes) for effecting a Soxlet extraction (fabric "C") with methylene chloride for 4 hrs and checking whether there is still some cream present on the sample, whereas the remaining part is subjected to a further series of 10 washing cycles, to finish the test. A Soxlet extraction (fabric "D") is also carried out on the last fabric sample (3 holes) with methylene chloride for 4 hrs. Each washing was effected as follows:

• ECE soap 2 g/1; 5 minutes stirring at room temperature

• foulard passage at P = 6 bar

At the end of the first 5 washings and then the following 10, the fabric was dried in an oven at 90⁰C. A new bath was prepared for each washing.

The following table shows the residue amounts after Soxlet extraction for each of the fabric samples:

= before extraction, after conditioning at 105°C for 2 hrs. The extracts are analyzed by gas-chromatography. The analysis of the gas-chromatograpliic data allows the following conclusions:

_ q _ 1. compounds having retention times similar to that of squalane oil, which is present in the initial cream (16.512 on the cream extract), are not present on the non- treated fabric

2. squalane oil, deriving from the cream, is present on the treated fabric

3. squalane oil, deriving from the cream (fabric B), is still present on the fabric (fabric C) after 5 washings

4. the presence of squalane oil is still detected on the fabric after 15 washings (fabric D), in an amount analogous to that found after 5 washings (fabric C).

Example 2. Treatment of fabric with Aloe-based cream Four different types of fabrics were tested:

1. White fabric (called 1)

2. White fabric with blue strips (called 2)

3. White fabric lustered on one side (called 3)

4. Light white lustered fabric (called 4)

A Soxlet extraction was performed on a small sample of these fabrics for 4 hrs with di- chloromethane (internal method MGT055). These fabrics were called "raw samples". The fabrics, before treatment with the hydrating cream NATURAE GUNE' ® based on aloe, were previously cleansed as follows:

* 5 g/1 Livel Super AM 05 for 30 minutes at 4O⁰C and dried at 120⁰C.

Treatment with the cream was subsequently effected; the bath formulation is the following:

• 100 g/1 aloe cream

• 20 g/1 emulsifier

• 10 g/1 aloe hydrating cream in acid form

• passage to foulard at P = 4 bar and oven drying at 120⁰C. A sample was taken from the treated fabric tυ effect a Soxlet extraction (internal method MGT 055) for 4 hrs with dichloromethane to test the presence of aloe cream, the remaining part being subjected to a series of washings.

A sample of fabric is kept, after 5 washings, to effect a Soxlet extraction with methylene chloride for 4 hrs and check whether the cream is still present on the sample. The remaining part is subjected to a further series of washings, so as to have fabric samples with 10, 15 and 20 washings, and each of these samples is subjected to a Soxlet extraction with methylene chloride for 4 hours and is checked to verify whether there is any cream still present. Each washing was effected as follows:

• ECE soap 2 g/1; 5 minutes stirring at room temperature

• passage to foulard at P = 6 bar.

The fabric is dried in an oven at 12O⁰C, at the end of the series of washings. A new bath was prepared for each washing.

Ethyl ether is added to what is remaining in the flask, after complete removal of the methylene chloride, and the solution is quantitatively transferred to a 250 ml separating funnel; about 50-60 ml of ether are necessary for this operation. 20 ml of a 10% aqueous solution of sodium chloride are added to the separating runnel, the whole mixture is shaken and the two phases are left to separate. After the separation of the two phases, the aqueous phase (at the bottom) is removed. The extraction is repeated twice, the aqueous phase is removed.

The ether solution, which often has a flocculent precipitate, is subsequently filtered on a folded filter paper and the extraction is repeated for a further 3 times with the 10% aqueous solution of sodium chloride. The ether solution is transferred to a stoppered beuta containing sodium sulphate, it is left to rest for at least 2 hours and is then trans- ferred to a 50 ml volumetric flask. The solution is ready to be injected for a gas- cliromatographic test.

In order to observe the presence of the aloe cream, a gas-chromatogram of the cream was previously effected, using the same extraction and recovery method.

Experimental data

1. White fabric

The gravimetric values obtained from Soxlet extraction with dichloromethane are shown hereunder for each sample of white fabric tested:

As can be seen, the percentage of extract is extremely high in the beginning and the value tends to stabilize but it remains quite consistent with respect to the raw fabric. The characteristic peaks of the cream are shown hereunder together with their presence in the gas-chromatograms of the extracts of the fabric samples; 7 characteristic peaks were identified:

The above table shows thai aloe cream is present in all the samples, from the treated fabric to the washed products, but no characteristic peaks are detected in the raw fabric. 2. White fabric with blue stripes

The gravimetric values obtained from Soxlet extraction with dichloromethane are indicated below for each sample of white fabric with blue stripes tested:

The initial value of the extract percentage is high, it then tends to decrease with washing and stabilizes on values lower than that of the raw fabric.

This does not mean that the process is not efficient, as it should be pointed out that, before treatment, a purging is effected (5 g/1 Livel Super AM 05 for 30 minutes at 40⁰C and dried at 120°C, as specified above) on the raw fabric to improve the cleaning of the fabric sample. This expedient is useful for diminishing the presence of dirt, which tends to "waterproof ' the fibers to treatment aloe cream.

An extraction of a fabric sample subjected to purging was effected, to reveal the extract percentage value after this passage:

As can be observed, the value of the extract percentage is clearly lower than that of the raw fabric, and also lower than those of all the extracts of the fabrics tested after the treatment subsequent to purging. This value is the reference point for determining the efficacy of the treatment, and remains persistent also after 20 washings. The characteristic peaks of the cream are shown hereunder, together with their presence in the gas-chromatograms of the extract of the fabric samples; 7 characteristic peaks were found:

The above table shows how aloe cream is present in all the samples, from those treated to the washed products, whereas no characteristic peak can be found in the raw fabric. 3. White fabric lustered on one side

The gravimetric values resulting from Soxlet extraction with dichloromethane for all samples of white fabric tested, are indicated hereunder:

The value of the extract percentage is initially high, it then tends to decrease with washings and reaches stationary values lower than the extract percentage of the raw fabric, in any case, remaining high.

As for the previous fabric sample, this does not mean that the process is not efficient, as it should be pointed out that a purging (5 g/1 Livel Super AM 05 for 30 minutes at 4O⁰C and dried at 150⁰C, as specified above) is effected on the raw fabric to improve the cleanliness of the fabric sample, and this expedient is useful for diminishing the presence of dirt, which tends to "waterproof the fibers to treatment with aloe cream. The characteristic peaks of the cream are provided hereunder, together with their presence in the gas-chromatogranis of the extract of the fabric samples; 7 characteristic peaks were found:

The characteristic peaks are very clear for all samples treated with the aloe cream. The peak at 3.299 which appears in the gas-chromatogram of the raw fabric is not due to the cream or its components, but refers to a substance present in the fabric before purging, which has a retention time analogous to that of a cream component.

4. Light white lustered fabric

The gravimetric values resulting from Soxlet extraction with dichloromethane for all the samples of white fabric tested, are shown hereunder:

As can be seen, the amount of extract percentage is extremely high initially, and tends to stabilize with washings, but remains very significant with respect to the raw fabric. The characteristic peaks of the cream are indicated hereunder, together with their presence in the gas-chromatograms of the extract of the fabric samples; 7 characteristic peaks were found:

The above table shows that aloe cream is present in all samples, from the treated product to the washed fabrics, whereas no characteristic peak can be found in the raw fabric. Conclusions

• The treatment gave optimum results on all fabrics tested, showing right from the start, a clear increase in the extract percentage.

• In all cases we observed that the repeated washings did not annul the presence of the aloe cream, we can therefore assert that it is persistent.

• The value of the extract percentage tends to stabilize with washings. In general, the fabric which showed the best persistence value is the white one (fabric 1). As a confirmation of tliis, the persistence percentages of the treatment after 20 washings are provided below:

Claims

1. A material composition having particular functional properties for the skin, characterized in that it comprises (i) one or more textile products and (ii) one or more cosmetic products, either in the form of a cream or in other cosmetic forms, suitable for protecting the skin and/or for enhancing its appearance, said cosmetic products (ii) being applied on said textile products (i).

2. The material composition according to claim 1, wherein the cosmetic products, either in the form of a cream or in other cosmetic forms, are selected from:

** cosmetic products having an astringent function, deodorant, for purifying the dermis and with an anti-microbial action;

* * cosmetic products, coadjuvants for the external treatment of cellulite; ** cosmetic products having a toning, elasticising, skin restoring action;

** cosmetic products having a softening-emollient-smoothening action on the skin;

* * cosmetic products having a protective and/or reddening preventive action on the skin;

** cosmetic products capable of preventing and mitigating skin-aging processes.

3. The material composition according to claim 2, wherein the cosmetic products are selected from (a) cosmetic products having an astringent action for greasy skin; (b) cosmetic products for the external treatment of cellulite; (c) cosmetic products having a toning, elasticising and restoring action on the skin.

4. The material composition according to claim 1, wherein the cosmetic products are in the form of a cream.

5. The material composition according to claim 1, wherein the textile products are selected from spun products, woven and woven-non- woven fabrics, items of clothing.

6. The material composition according to claim 5, wherein the textile products are selected from woven fabric.

7. The material composition according to claim 1, wherein one or more cosmetic products, either in the form of a cream or another cosmetic form, are applied on one side only of the fabric.

8. A process for the preparation of the material composition according to claim 1, characterized in that the textile product is impregnated with one or more cosmetic products, either in the form of a cream or in another cosmetic foπn.

9. The process according to claim 8, wherein the textile product is impregnated in an aqueous environment including one or more cosmetic products, either in the form of a cream or in another cosmetic form, emulsifiers, and other possible additives normally used.

10. The process according to claim 9, wherein the emulsifier is present in an amount of 1 to 100 grams/liter.

11. The process according to claim 9, wherein the cosmetic product is present partially as such and partially anhydrous.

12. The process according to claim 11, wherein the cosmetic product as such is present in a quantity of 1 to 200 grams/liter and the anhydrous cosmetic product is present in a quantity of 1 to 100 grams/liter.

13. The process according to claim 9, wherein the cosmetic product is in the form of a cream.

14. The process according to claim 8, characterized in that it envisages the addition of one or more cosmetic products, either in the form of a cream or another cosmetic form, during the textile finishing phase.

15. The process for the preparation of the material composition according to claim 8, characterized in that the textile product is impregnated with one or more cosmetic prod- iicts selected from:

* * cosmetic products, coadjuvants for the external treatment of cellulite;

** cosmetic products having a toning, elasticising, skin restoring action;

** cosmetic products having a protective and/or reddening preventive action on the skin;

** cosmetic products capable of preventing and mitigating skin-aging processes;

** cosmetic products having a hydrating and refreshing action on the skin.

16. The process for the preparation of the material composition according to claim 1, characterized in that it is carried out according to a process selected from exhaustion or nebulization processes, spray-application, surface stratification by spreading or scraping.

17. Finished clothing items obtained starting from the material composition according to claim 1.

18. The clothing items according to claim 17, characterized in that they are in contact with the skin.