DE4311357A1

DE4311357A1 - Drain mat

Info

Publication number: DE4311357A1
Application number: DE4311357A
Authority: DE
Inventors: Hendrik Constant Berkhout
Original assignee: Akzo Nobel NV
Current assignee: Akzo Nobel NV
Priority date: 1993-04-06
Filing date: 1993-04-06
Publication date: 1994-10-13

Abstract

Drain mat, containing two filter layers, which are permeable to fluids but are impermeable to solid particles, and at least one distance mat which is arranged between the two filter layers, keeps the two filter layers at a distance apart, and has such a structure that fluids are drawn off inside the distance mat and approximately parallel to the filter layers, the filter layers and the distance mat(s) being connected to one another. The drain mat is characterised in that serving as connecting element for the connection between the filter layers and the distance mat(s) are threads, yarns, pins and/or wires which extend over the cross-section of the drain mat through all layers or mats and have holders at their ends which are arranged on the two outer sides of the drain mat and effectively prevent the connecting elements from being pulled out of the mat, the connecting elements between the two holders being of a length which corresponds at least approximately to the thickness of the drain mat.

Description

Die Erfindung betrifft eine Drainmatte, enthaltend zwei Filterschichten, die für Fluide durchlässig, jedoch für feste Partikel undurchlässig sind, und mindestens eine zwischen den beiden Filterschichten angeordnete Distanz matte, die die beiden Filterschichten auf Abstand hält und eine derartige Struktur aufweist, daß Fluide innerhalb der Distanzmatte und in etwa parallel zu den Filterschichten abgeführt werden, wobei die Filterschichten und die Distanzmatte(n) miteinander verbunden sind.The invention relates to a drain mat containing two Filter layers that are permeable to fluids, but for solid particles are impermeable, and at least one distance arranged between the two filter layers mat that keeps the two filter layers at a distance and has such a structure that fluids within the Spacer mat and roughly parallel to the filter layers are removed, the filter layers and the Spacer mat (s) are connected to each other.

Derartige Drainmatten, wie sie beispielsweise in DE-GM 70 39 906 beschrieben sind, werden vielseitig zur Drainage von Flüssigkeiten oder Gasen, beispielsweise zur Oberflächenwasserabführung (Horizontal- und/oder Vertikal drainage), zur Abführung von Wässern, Abwässern und/oder Gasen im Grund oder in der Abdeckung von Deponieen einge setzt. Die Verbindung der zur Drainung erforderlichen äußeren Filterschichten mit dazwischenliegender bzw. -liegenden Distanzmatte(n) erfordert in der Regel einen großen Arbeitsaufwand.Such drain mats, such as in DE-GM 70 39 906 are described, are versatile for Drainage of liquids or gases, for example for Surface water drainage (horizontal and / or vertical drainage), for draining water, waste water and / or Gases in the bottom or in the cover of landfills puts. The connection of those required for drainage outer filter layers with intermediate or -Lateral spacer mat (s) usually requires one great workload.

Aufgabe der vorliegenden Erfindung ist es, eine besonders einfache Verbindungsmöglichkeit der für eine Drainmatte der eingangs genannten Art erforderlichen Schichten zur Ver fügung zu stellen.The object of the present invention is a particular easy connection option for a drain mat required type layers for Ver to provide.

Die erfindungsgemäß gestellte Aufgabe wird dadurch gelöst, daß als Verbindungselement für die Verbindung der Filter schichten und Distanzmatte(n) Fäden, Garne, Stifte und/oder Drähte dienen, die sich über den Querschnitt der Drainmatte durch alle Schichten bzw. Matten hindurch erstrecken und an ihren Enden Halterungen aufweisen, die an den beiden Außen seiten der Drainmatte angeordnet sind und wirksam ver hindern, daß die Verbindungselemente aus der Matte gezogen werden können, wobei die Verbindungselemente zwischen den beiden Halterungen eine Länge aufweisen, die zumindest in etwa der Dicke der Drainmatte entspricht.The object of the invention is achieved that as a connecting element for connecting the filter layers and spacer mat (s) threads, yarns, pins and / or Serve wires that span the cross section of the drain mat extend through all layers or mats and on their ends have brackets on the two outside sides of the drain mat are arranged and effective ver prevent the fasteners from being pulled out of the mat can be, the connecting elements between the two brackets have a length that is at least in corresponds approximately to the thickness of the drain mat.

Bevorzugt ist mindestens eine Halterung des Verbindungs elementes als Widerhaken ausgebildet, der zum entgegen gesetzten Ende des Verbindungselements hin an den Faden, das Garn, den Stift bzw. den Draht anschmiegbar ist, sich jedoch bei Belastung in entgegengesetzter Richtung quer zum Faden, Garn, Stift oder Draht aufrichtet.At least one holder of the connection is preferred element designed as a barb to the opposite set end of the connecting element towards the thread that Yarn, the pin or the wire is nestled, however when loaded in the opposite direction across the thread, Raises yarn, pen or wire.

Besonders günstig ist es, wenn das Verbindungselement ein Draht ist, dessen Halterung an dem einen Ende als Quersteg und an dem anderen als längs der Drahtachse auslegbarer Quersteg ausgebildet ist. Insbesondere besteht der Draht aus Kunststoff und ist verstreckt. Diese Verbindungselemente sind in der Bekleidungsindustrie zum Befestigen von Preis schildern und dergleichen bekannt. Sie sind beispielsweise in US-PS 4,456,123, US-PS 4,416,838 und GB-PS 1 417 131 beschrieben.It is particularly favorable if the connecting element is a Is wire, the holder at one end as a crossbar and on the other than can be laid out along the wire axis Cross bar is formed. In particular, the wire is made of Plastic and is stretched. These fasteners are in the clothing industry to fix price signs and the like known. For example, you are in U.S. Patent 4,456,123, U.S. Patent 4,416,838 and GB Patent 1,417,131 described.

Als Filterschichten kommen insbesondere Filtermaterialien, beispielsweise Filze, Vliese oder auch entsprechend dicht eingestellte Gewebe infrage. Für die Distanzmatte hat sich die in der DE-PS 25 30 499 beschriebene Matte bestens bewährt.In particular, filter materials come as filter layers, for example, felts, fleeces or dense set tissues in question. For the spacer mat the mat described in DE-PS 25 30 499 very well proven.

Claims

1. Drain mat, containing two filter layers which are permeable to fluids but impermeable to solid particles, and at least one spacer mat arranged between the two filter layers, which keeps the two filter layers at a distance and has a structure such that fluids within the spacer mat and are discharged approximately parallel to the filter layers, the filter layers and the spacer mat (s) being connected to one another, characterized in that threads, yarns, pins and / or wires serve as connecting element for the connection of the filter layers and spacer mat (s), which extend across the cross-section of the drain mat through all layers or mats and at their ends have brackets which are arranged on the two outer sides of the drain mat and effectively prevent the connecting elements from being pulled out of the mat, the connecting elements between the two brackets an L having length at least approximately corresponds to the thickness of the drain mat.

2. Drain mat according to claim 1, characterized in that at least one holder of the connecting element as Barb is formed to the opposite End of the connecting element towards the thread, the yarn, the pin or the wire is nestled, however when loaded in the opposite direction across Raises thread, yarn, pen or wire.

3. Drain mat according to claim 1 or 2, characterized records that the connecting element is wire, the Bracket at one end as a crossbar and at the other than alignable along the wire axis, without external force in the transverse position recessed crossbar is trained.

4. Drain mat according to claim 3, characterized in that the wire is made of plastic and is stretched.