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1. CA2319645 - PROCESS FOR TREATING LINENIZED CORK SHEETS

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[ EN ]
CLAIMS
1. Process for treating linenized cork sheets employing a surfactant emollient agent, including the steps of: (a) diluting said emollient agent with water obtaining a diluted emollient mixture; (b) preparing an absorbing sheet apt to be soaked with liquid, and inducing the absorption, of said emollient mixture in said absorbing sheet by immersing said absorbing sheet in said emollient mixture for a period of time having a duration sufficient to allow absorbtion of said emollient mixture in said absorbing sheet; and (c) putting said soaked absorbing sheet in a surface-to-surface contact with a
linenized cork sheet at its linenized surface, keeping this contact for a period of time having a duration sufficient to allow drying of the absorbing layer by the evaporation of said diluted emollient mixture to allow an emollient agent transfer from the absorbing sheet to the linenized cork sheet.
2. Process according to claim 1, wherein said absorbing sheet and said linenized cork sheet are kept in said surface-to-surface contact for a period of time having a length greater than 24 hours.
3. Process according to claim 1, wherein the water employed is demineralized water having a hardness not greater than 0.5 °F.
4. Process according to claim 1, wherein said absorbing sheet is a fabric sheet.
5. Process according to claim 4, wherein said fabric sheet is realized in thick weft cotton cloth.
6. Process according to claim 4, wherein said absorption is induced by the immersion of the fabric sheet in a bath of said emollient mixture, with an immersion period having a length greater than 1 hour long.
7. Process according to claim 5, wherein said immersion period has a length of
hours.
8. Process according to claim 7, wherein, during said drying, the free surface of the soaked absorbing layer, opposite to its surface put in a surface-tosurface contact
with the linenized surface of the linenized cork sheet, is at least partially isolated, limiting the circulation of the atmospheric air on said free surface.
9. Process according to any one of claims 1 to 8, wherein the non linenized surface of the linenized cork sheet, opposite to said linenized surface, is as well put in a surface-to-surface contact with an absorbing sheet soaked with said diluted emollient mixture.
10. Process according to claim 9, wherein said free surface is isolated by rolling up the linenized cork sheet and the soaked absorbing sheet, forming thereby a roll and putting said non linenized surface in contact with the soaked absorbing sheet at said free surface which is therefore completely isolated.
11. Process according to claim 10, wherein said roll is kept in a substantially vertical position, until the absorbing sheet is completely dry.
12. Process according to claim 10, wherein the roll is kept in an environment having a relative humidity lower than 50% and a temperature comprised between 18 and 23°C.
13. Process according to any of the claims from 1 to 12, wherein said emollient agent comprises cationic surfactants.
14. Process according to claim 13, wherein said cationic surfactants are present in said emollient agent in a percentage of no more than 2%.
15. Process according to any of the claims from 1 to 14, wherein said emollient agent comprises glycerol.
16. Process according to any of the claims from 1 to 14, wherein said emollient agent comprises emollient lipids.
17. Process according to claim 16, wherein said emollient lipids are natural lipids of vegetal and/or animal origin.
18. Process according to claim 17, wherein said natural lipids comprise vison oil.
19. Process according to claim 17, wherein said natural lipids comprise cocoa oil.
20. Process according to claim 17, wherein said natural lipids comprise aloe extract.
21. Linenized cork sheet obtained by said treating process according to any one of claims 1 to 20.
22. Use of one or more linenized cork sheets, obtained by said treating process according to any of the claims from 1 to 20, as upholstery and/or wallpaper.
23. Use of one or more linenized cork sheets, obtained by said treating process according to any of the claims from 1 to 20, in the manufacturing of clothing and/or leather goods in replacement of leather.