Process for waterproofing leather and leather obtained by...

Details Process for waterproofing leather and leather obtained by... Process for waterproofing leather and leather obtained by...

2005-02-15

2005-02-15

Gupta, Yogendra N. (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Treatment of untanned skins or hides

C008S094150, C428S336000, C428S411100

Reexamination Certificate

active

06855171

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.

REFERENCES:
patent: 4925732 (1990-05-01), Driskill et al.
patent: 5283112 (1994-02-01), Krishnan
patent: 5598644 (1997-02-01), Polegato
patent: 0 380 902 (1990-08-01), None
patent: 2 209 705 (1989-05-01), None
patent: 2 290 455 (1996-01-01), None

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