Process for waterproofing leather and leather obtd. by means of said process and shoes containing said leather

Abstract

A process for waterproofing leather (1) includes pressing on the internal surface of the leather (1) at least one semi-permeable membrane (2) whose surface contacting the leather (1) is provided with a glue pattern. The glue pattern of the semi-permeable membrane (2) is preferably thermoadhesive, and therefore the pressing of the membrane on the leather (1) is preferably a hot pressing. Further, the semi-permeable membrane (2) is preferably elastic, non-porous and combined with a support sheet (3). The leather obtained by the process is also provided.

Description

technical field [0001] The invention relates to a leather waterproofing method, in particular to a leather waterproofing method for making shoes, clothing or leather accessories. The invention also relates to the leather obtained by said method. Background technique [0002] It is known to waterproof leather, especially leather used in shoe, clothing or leather accessories, by chemical treatment. These chemical treatments are applied (for example by spraying) thin layers of water repellent substances on the outside of the leather itself. Since this method has long been inefficient, a new method has been conceived, which is to sew a fabric lining combined with a semi-permeable membrane inside the leather, which not only prevents further penetration of water into the shoe or clothing article, but also allows The body radiates moisture outward. [0003] However, the disadvantage of this method is that it always allows water to penetrate under the leath...

AI Technical Summary

Problems solved by technology

However, this method inevitably creates a water cushion and requires the peripheral area of ​​the upper in order to secure the membrane to the sole, thereby reducing its emission properties.

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