Self-closing ventilation insert and method for producing it
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United States of America Patent
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Dec 13, 2016
Grant Date -
Aug 13, 2009
app pub date -
Sep 6, 2007
filing date -
Sep 6, 2006
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Abstract
The subject of the patent application is a self-closing ventilation insert for ventilating textiles, shoes or articles made up of at least two air-permeable layers, an absorber layer arranged between the air permeable layers, coverings above the air-permeable layers and at least one protective element. The absorber arranged in the chambers of the ventilation insert swells when it absorbs moisture and thereby closes the chambers of the ventilation insert to make them impermeable to water and air. When the ventilation insert is dried, the chambers open and become permeable to air again. Furthermore, a method of producing the ventilation insert by injection molding is described. The ventilation insert according to the invention may be used in a wide variety of areas, both in the clothing sector and in technical areas.
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