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Draining and filtering net, particularly for geotechnical applications

A filter and mesh technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of lack of mechanical strength, hindering correct excretion, and equalization

Inactive Publication Date: 2012-07-18
TENAX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In practical implementation, it has been found that such nets are not always a complete solution as they do not have the necessary mechanical strength and thus may flatten and actually prevent proper drainage

Method used

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  • Draining and filtering net, particularly for geotechnical applications
  • Draining and filtering net, particularly for geotechnical applications
  • Draining and filtering net, particularly for geotechnical applications

Examples

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Embodiment Construction

[0018] Referring to the drawings, a drainage and filter screen according to the present invention, in particular for geotechnical applications, is generally designated by the reference numeral 1 and comprises an intermediate layer 2 and a first outer layer 3 and a second outer layer 4, the two outer layers The layers are applied on opposite sides of the intermediate layer.

[0019] Preferably, but not necessarily, the mesh is made of high density polyethylene, as polyethylene has been found to be a suitable polymer for geotechnical applications, which can be blended with optional additives to form the final use and related commercial requirements. Determined mechanical and color properties.

[0020] The intermediate layer 2, which is essentially the basic element for ensuring good mechanical and hydraulic properties of the web, consists of a plurality of continuous filaments, designated by the reference number 10, which are arranged side by side with each other to actually for...

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Abstract

A draining and filtering net (1), particularly for geotechnical applications, comprising an intermediate layer (2) and a first outer layer (3) and a second outer layer (4) at the mutually opposite faces of the intermediate layer (2). The particularity of the invention consists in that the intermediate layer (2) and the outer layers (3, 4) are provided monolithically. The intermediate layer (2) isconstituted by a plurality of substantially continuous filaments (10) which lie along the extrusion direction. At least one layer of nonwoven fabric (20) is further provided which is connected to oneof the outer layers.

Description

technical field [0001] The present application relates to drainage and filter screens, especially for geotechnical applications. Background technique [0002] As is known, in the geotechnical field, drainage and filter screens have been used, generally consisting of different types of mesh layers provided on one side with a plurality of protrusions, to which a layer of non-woven fabric is then attached. [0003] In fact, this type of mesh is designed to create a drainage area for the passage of liquids, and by means of a non-woven layer creates a filtration action that accommodates particles, sand or fines of different sizes. [0004] In practical implementation, it has been found that such nets do not always fully solve the problem, as they do not have the necessary mechanical strength and thus may become flat and actually prevent proper drainage. SUMMARY OF THE INVENTION [0005] The object of the present invention is to solve the above-mentioned problems by providing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/20E02D3/10
Inventor C·贝雷塔
Owner TENAX CORP
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