RU41048U1 - STEAM WATERPROOFING FABRIC - Google Patents

Abstract

Vapor-waterproofing fabric, consisting of a woven layer formed by interweaving the main and weft polymer ribbon threads and the surface layer of the laminate, characterized in that the number of the main and weft polymer ribbon threads is selected from the following ratios: 1.0n <n <1.3n, 1 , 1n <n <1.3 n, 1.1n <n <1.3 n or 1.0n <n <1.3n, where n (n) is the number of ribbons on the basis (in the weft) per unit length (width) of fabric ; n (n) - the number of straightened (without folds) ribbons on the basis (in the weft) per unit length (width) of the fabric.

Description

The utility model relates to the building materials industry, in particular to roofing materials.

One of the conditions for building a house that can provide comfortable living conditions for a long time is the installation of a joint system of steam and moisture protection of building structures and insulation. To preserve the heat-insulating properties of the roof, it is necessary to provide vapor barrier insulation from saturation with water vapor from the inside of the room, as well as to reliably protect it from moisture from the environment and the removal of vapor from the insulation to the outside of the home. To this end, specialists have developed roofing materials that retain their properties for a long time. One of the most important technical characteristics that these materials should possess during operation is their high mechanical tensile and bursting strength.

A woven fabric for coating is known (c. France No. 2426782, E 04 D 5/06), which is a lightweight fabric of high tensile and tear strength and having a base mesh into which polyamide yarns are woven at a certain interval, giving greater tensile strength the elongation of which is less than the elongation of the fabric fibers, which is at least air- and water-permeable due to the coating of a material for which the temperature of application to the fabric is lower than the softening temperature of the fabric threads.

The closest in technical essence is the UTAFOL subroofing film (http://stroydom.com.ru/ podkrov yuta.htn), which consists of three layers: the main one is a reinforcing mesh made of polyethylene strips, and two external ones made of polyethylene

films. Reinforcing mesh gives strength to the material, double-sided lamination provides waterproofing properties, and non-through microperforation creates vapor permeability.

The disadvantage of these coatings is insufficient tensile strength and bursting at a certain level of vapor permeability.

The objective of this technical solution is to increase the tensile strength of the material and punching.

The problem is solved in that in a vapor barrier fabric consisting of a fabric layer formed by interweaving of the main and weft polymer threads and the surface laminate, the number of the main and weft polymer threads is selected from the following ratios:

1,0n ₁ ¹ <n ₁ <1,3n ₁ ¹ 1,1n ₁ ¹ <n ₁ <1,3 n ₁ ¹ ,

1,1n ₂ ¹ <n ₂ <1,3n ₂ ¹ or 1,0n ₂ ¹ <n ₂ <1,3n ₂ ¹ ,

where n ₁ (n ₂ ) is the number of ribbons on the basis (in the weft) per unit length (width) of the fabric;

n ₁ ¹ (n ₂ ¹ ) - the number of straightened (without folds) ribbons on the basis (in the weft) per unit length (width) of the fabric.

The following is the essence of the utility model and an example of a specific implementation.

The fabric consists of a woven layer formed by interweaving the warp and weft polymer threads and the laminate layer. The laminate can be made with a tread surface. Compliance with the following ratios:

1,0n ₁ ¹ <n ₁ <1,3n ₁ ¹ 1,1n ₁ ¹ <n ₁ <1,3 n ₁ ¹

1,1n ₂ ¹ <n ₂ <1,3n ₂ ¹ OR 1,0n ₂ ¹ <n ₂ <1,3n ₂ ¹ ,

where n ₁ (n ₂ ) is the number of ribbons on the basis (in the weft) per unit length (width) of the fabric;

n ₁ ¹ (n ₂ ¹ ) - the number of straightened (without folds) ribbons on the basis (in the weft) per unit length (width) of fabric

allows you to adjust the gaps between the ribbons, which leads to a decrease in vapor permeability.

Example. With a ribbon width of 3 mm, n ₁ = 32 pieces, n ₂ = 33 pieces for every 100 mm of length in the corresponding direction, a uniform gap between the ribbons is ensured and, accordingly, vapor permeability is ensured during unilateral lamination.

By adjusting the gaps between the ribbons, changing the ratios n ₁ and n ₂ within the stated limits, the gaps between the ribbons are reduced and the vapor permeability is reduced (regulated). In practice, this effect is achieved only by lamination from two sides. Exceeding the threshold for increasing the number of ribbons more than 1.3 leads to their twisting, which increases the gaps in the fabric and the material is excessively consumed.

The proposed fabric has greater strength (10 times), a higher service life compared to similar materials with improved performance.

Claims (1)

Steam-waterproofing fabric, consisting of a woven layer formed by interweaving the main and weft polymer ribbon threads and the surface layer of the laminate, characterized in that the number of the main and weft polymer ribbon threads is selected from the following ratios: 1,0n $\genfrac{}{}{0ex}{}{\text{1}}{\text{1}}$ <n ₁ <1,3n $\genfrac{}{}{0ex}{}{\text{1}}{\text{1}}$ , 1,1n $\genfrac{}{}{0ex}{}{\text{1}}{\text{1}}$ <n ₁ <1.3 n $\genfrac{}{}{0ex}{}{\text{1}}{\text{1}}$ , 1,1n $\genfrac{}{}{0ex}{}{\text{1}}{\text{2}}$ <n ₂ <1.3 n $\genfrac{}{}{0ex}{}{\text{1}}{\text{2}}$ or 1,0n $\genfrac{}{}{0ex}{}{\text{1}}{\text{2}}$ <n ₂ <1,3n $\genfrac{}{}{0ex}{}{\text{1}}{\text{2}}$ , where n ₁ (n ₂ ) is the number of ribbons on the basis (in the weft) per unit length (width) of the fabric; n $\genfrac{}{}{0ex}{}{\text{1}}{\text{1}}$ (n $\genfrac{}{}{0ex}{}{\text{1}}{\text{2}}$ ) - the number of straightened (without folds) ribbons on the basis (in the weft) per unit length (width) of the fabric.