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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: 2009-03-25
TENAX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 accompanying drawings, a drainage and filter screen according to the invention, in particular for geotechnical applications, is generally designated by the reference number 1 and comprises a middle 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, since polyethylene has been found to be a suitable polymer for geotechnical applications and it can be blended with selected additives to form Determined mechanical and color properties.

[0020] The intermediate layer 2, which is essentially the basic element in order to ensure good mechanical and hydraulic properties of the net, is composed of a plurality of continuous filaments indicated by the reference number 10, which are arranged next to each other to form in fact the channels for the drainage of water.

[0021] In...

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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) is constituted 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 one of the outer layers.

Description

technical field [0001] This application relates to drainage and filter screens, in particular for geotechnical applications. Background technique [0002] As is known, in the geotechnical field, drainage and filter screens have been used which generally consist of different types of mesh layers provided with a plurality of protrusions on one side to which a nonwoven fabric is then attached. [0003] In fact, this type of mesh is designed to create a drainage area for the passage of liquids, with the aid of layers of non-woven fabric to create a filter action that traps particles, sand or fines of different sizes. [0004] In practical implementation, it has been found that such meshes do not always solve the problem completely, since they do not have the necessary mechanical strength and thus may flatten and actually prevent proper drainage. Contents of the invention [0005] The object of the present invention is to solve the above-mentioned problems by providing a drain...

Claims

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Application Information

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IPC IPC(8): E02D17/20E02D3/10
Inventor C·贝雷塔
Owner TENAX CORP
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