Enhancing the watertightness of textile sheetlike constructions, textile sheetlike constructions thus enhanced and use thereof
First Claim
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1. A process for enhancing the watertightness of a porous textile sheetlike construction having fibers, comprising:
- applying to the textile sheetlike construction in a dry state hydrophobic particles or nonhydrophobic particles having an average particle size in the range from 0.02 to 100 μ
m, which become fixed to the fibers of the textile sheetlike construction and provide the surfaces of the fibers with a structure composed of elevations and/or depressions, wherein the elevations have a spacing in the range from 20 nm to 100 μ
m and a height in the range from 20 nm to 100 μ
m, and subsequently hydrophobicizing the nonhydrophobic particles.
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Abstract
The present invention relates to textile sheetlike constructions having an enhanced watertightness and also to a process for producing them. It was found that, surprisingly, the watertightness of porous textile sheetlike constructions is enhanced when a coating of hydrophobic particles having an average particle size in the range from 0.02 to 100 μm is applied to the surfaces of the fibers. The textile sheetlike constructions can be used for example as textile building materials or for producing tents, umbrellas or the like.
69 Citations
22 Claims
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1. A process for enhancing the watertightness of a porous textile sheetlike construction having fibers, comprising:
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applying to the textile sheetlike construction in a dry state hydrophobic particles or nonhydrophobic particles having an average particle size in the range from 0.02 to 100 μ
m, which become fixed to the fibers of the textile sheetlike construction and provide the surfaces of the fibers with a structure composed of elevations and/or depressions, wherein the elevations have a spacing in the range from 20 nm to 100 μ
m and a height in the range from 20 nm to 100 μ
m, and subsequentlyhydrophobicizing the nonhydrophobic particles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 21, 22)
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15. A textile sheetlike construction having enhanced watertightness, wherein the sheetlike construction comprises fibers which comprise a hydrophobic surface structure composed of elevations having an average height in the range from 50 nm to 25 μ
- m and an average spacing in the range from 50 nm to 25 μ
m. - View Dependent Claims (19, 20)
- m and an average spacing in the range from 50 nm to 25 μ
Specification