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

A waterproof treatment and leather technology, applied in the waterproof field of leather, can solve the problem of reducing emission performance and achieve the effect of maintaining comfort

Inactive Publication Date: 2004-07-21
OUTDRY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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

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Embodiment Construction

[0026] Other advantages and characteristics of the method of the present invention will become apparent to those of ordinary skill in the art from the following detailed description of one embodiment of the method of the present invention with reference to the accompanying drawings.

[0027] With reference to the figure, said embodiment of the method consists in applying to leather 1 at least one semipermeable membrane 2 completely covering the inner surface of said leather 1 . The application method is carried out by pressing (preferably hot pressing) the entire hide and film with a flatbed or roller press with a heating system. In practice, that surface of the membrane 2 that is in contact with the leather 1 has a pattern of hot-adhesive glue, preferably formed by a number of polyurethane glue dots with a diameter between 0.1 mm and 0.8 mm and a density of 50 points / cm 2 -200 dots / cm 2 . By heating the film 2 during pressing, a good adhesion to the leather 1 is obtained w...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A43B23/02A43B7/12A43B13/12A43B23/06B32B9/02B68F1/00C14C11/00
CPCA43B7/125A41D31/02A43B23/06A43B13/12A41D2400/22B32B9/02A41D31/102Y10T428/265Y10T428/31558Y10T428/31504A41D31/125A41D31/185B32B2437/02B32B2307/7265B32B9/025B32B9/045B32B27/40B32B27/12B32B2317/08B32B37/0076B32B37/1292
Inventor A·莫拉奇
Owner OUTDRY TECH
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