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1. WO1999041050 - PROCESS FOR TREATING LINENIZED CORK SHEETS

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[ EN ]

CLAIMS
1. Process for treating linenized cork sheets employing at least one emollient agent comprising surfactants, including the steps of:
* diluting said at least one emollient agent with water, in a predetermined proportion water/emollient agent, obtaining a diluted emollient mixture;

* preparing a sheet as absorbing layer, apt to be soaked with liquid, and inducing the absorption, of said emollient mixture in said layer; and
* putting said soaked absorbing layer (1) in contact with a linenized cork sheet (2) at its linenized surface (3), keeping this contact for a period of time having a length greater than 24 hours.
2. Process according to claim 1 , wherein the water employed is demineralized water having a hardness not greater than 0,5 °F.
3. Process according to claim 1 , wherein said absorbing layer is a fabric sheet.
4. Process according to claim 3, wherein said fabric sheet is realized in thick weft cotton cloth.
5. Process according to claim 3, wherein said absorption is induced by the immersion of the fabric sheet in a bath of said emollient mixture, with a immersion period having a length greater than 1 hour long.
6. Process according to claim 5, wherein said immersion period has a length of about 2 hours.
7. Process according to claim 1 , wherein said contact is kept for a period of time having such a length to allow the substantial drying of the absorbing layer by the evaporation of the emollient mixture.
8. Process according to claim 7, wherein, during the drying, the free surface (4) of the soaked absorbing layer (1), opposite to its surface (5) put in contact with the linenized surface (3) of the linenized cork sheet (2), is at least partially isolated, limiting the circulation of the atmospheric air on said free surface (4).
9. Process according to claim 8, wherein said free surface (4) is completely isolated, keeping the edges (7) of said soaked absorbing layer (1) exposed to the atmospheric air.
10. Process according to any of the previous claims, wherein the non linenized surface (8) of the linenized cork sheet (2), opposite to said linenized surface (3), is as well put in contact with an absorbing layer (1) soaked with said emollient mixture.
11. Process according to claims 9 and 10, wherein said free surface (4) is isolated by rolling up the linenized cork sheet (2) and the soaked absorbing layer (1), forming thereby a roll (9) and putting said non linenized surface (8) in contact with the soaked absorbing layer (1) at said free surface (3) which is therefore isolated.
12. Process according to claim 11 , wherein said roll (9) is kept in a substantially vertical position, until the absorbing layer (1) is completely dry. 13. Process according to claim 11 , wherein the roll (9) is kept in an environment having a relative humidity lower than 50% and a temperature comprised between 16 and 23°C.
14. Process according to any of the claims from 1 to 13, wherein said surfactants comprise cationic surfactants.
15. Process according to claim 14, wherein said cationic surfactants are present in said at least one emollient agent in a percentage of no more than 2%.
16. Process according to any of the claims from 1 to 15, wherein said at least one emollient agent comprises glyceroi.
17. Process according to claim 16, wherein said at least one emollient agent comprises emollient lipids.
18. Process according to claim 17, wherein said emollient lipids are natural lipids of vegetal and/or animal origin.
19. Process according to claim 18, wherein said natural lipids comprise vison oil.
20. Process according to claim 18, wherein said natural lipids comprise cocoa oil.
21. Process according to claim 18, wherein said natural lipids comprise aloe extract.
22. Process according to any of the claims from 14 to 21, wherein said surfactants comprise emollients and/or softening surfactants.
23. Linenized cork sheet obtained by a treating process according to any of the previous claims.
24. Use of one or more linenized cork sheets, obtained by a treating process according to any of the claims from 1 to 22, as coating and/or wallpaper.
25. Use of one or more linenized cork sheets, obtained by a treating process according to any of the claims from 1 to 22, in the manufacturing of clothing and/or leather goods.