EP0731220A1 - Tapis pour terrains - Google Patents

Tapis pour terrains Download PDF

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Publication number
EP0731220A1
EP0731220A1 EP96890039A EP96890039A EP0731220A1 EP 0731220 A1 EP0731220 A1 EP 0731220A1 EP 96890039 A EP96890039 A EP 96890039A EP 96890039 A EP96890039 A EP 96890039A EP 0731220 A1 EP0731220 A1 EP 0731220A1
Authority
EP
European Patent Office
Prior art keywords
layer
active
mat
fiber
backing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96890039A
Other languages
German (de)
English (en)
Inventor
Peter Dipl.-Ing. Reither
Christoph Terlinden
Peter Dr. Woisetschläger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0731220A1 publication Critical patent/EP0731220A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/004—Sealing liners

Definitions

  • the invention relates to a method for producing a floor mat, in particular a sealing mat, with an active layer composed of a fiber-active substance composite arranged between a textile backing layer and a cover layer, the active layer being first applied to the backing layer and needled with it, and then the active layer with the Cover layer is provided.
  • Known sealing mats essentially consist of a flexible backing layer, an intermediate layer made of swellable clay and a top layer, whereby according to EP-B 0 278 419 it has already been proposed to produce the backing and / or top layer from a nonwoven fabric or a woven or knitted fabric and all needling three layers with each other in order to achieve an internal cohesion of the sealing mat even after the clay has swelled and to prevent the swollen clay from acting as a sliding film between the carrier and cover layers due to its low friction values.
  • this needling alone cannot achieve greater shear strength, since it has been shown in practice that when shear forces occur, the fibers incorporated into the intermediate layer by the needling are withdrawn and the fiber composite is released again.
  • EP-A 0 555 800 describes a sealing mat in which a porous carrier material, in the pores of which swellable clay is embedded, has cover layers made of a water-soluble film on both sides, which means, above all, the tightness in the overlap area of two mats due to the possible direct contact of the clay layers should be improved. These top layers do not contribute to the shear strength of the mat, and due to the lack of a separate backing layer, only a fiber-infused clay layer is created from the outset.
  • EP-A 0 563 453 already shows sealing mats, in the production of which a fiber-clay composite is applied and needled, whereupon the free side or both sides are moistened with water and dried in order to handle the mats prevent the clay material from falling out and thus prevent a later loss of tightness.
  • the achievable shear strength of the mat is essentially achieved by the needling effect of the carrier layer and fiber-clay composite, which, however, gives rise to fears of unbundling of the needled fibers at higher shear loads.
  • the use of these sealing mats, especially on steep slopes and on embankments, therefore remains unsatisfactory because there is a risk of the weighting layers applied to the mat, e.g. gravel or rubble layers, slipping off due to the damp bentonite layer, which is to be regarded as a sliding plane, and the insufficient transmission of shear force .
  • EP-A 606 700 shows, there are already sealing mats with the most varied possibilities of an active layer made of a fiber-active substance composite, which active layer can also be applied to a carrier layer and needled with it.
  • this EP-A reveals the measure of applying a cover layer to the active layer on the side facing away from the support layer, which can also take place after needling of the active layer.
  • the cover layer is attached using adhesives, just as the active layer is treated with an adhesive to strengthen the fibers.
  • this inevitably leads to the penetration of the adhesive into the active layer and to an impairment of the active substance, in particular the swellability of bentonite or the like as an active substance, so that the sealing action is endangered by less swelling of the clay particles.
  • fiber structures are preferably used as the cover layer, which, when laying the mats, make it easier to seal the overlapping area of adjacent mats by penetrating and swelling clay particles in the cover layer, the use of adhesive and the swelling property of bentonite or the like which is impaired thereby can be used to seal the No longer reach the overlap area.
  • foils are used as the top layer, the tightness of this top layer itself is given and the penetration of active substance is unnecessary, but it happens here when laying the mats in the overlap area because of the inadequate adhesive connection between the foil of one mat and the carrier layer of the other mat or when Welding the backing layer of one mat onto the cover sheet of the other mat causes difficulties due to a loosening of the adhesive connection between this cover layer and the underlying active layer, and especially in the delicate butt areas to leaks and weak points.
  • the use of adhesives is relatively expensive and it must on their side effects, environmental impact u. Like. Be respected.
  • the invention is therefore based on the object of eliminating these deficiencies and of specifying a method of the type described at the outset which permits adhesive-free production of an easy-to-handle and installable and comparatively shear-resistant floor mat.
  • the invention solves this problem in that after the needling of the active and backing layers, the cover layer consisting of synthetic material is laminated onto the upper side of the active layer facing away from the backing layer by heating.
  • needling fibers, threads and. Like. Of carrier layer and active layer brought together and the carrier layer fibers pulled through to the top of the active layer through the mat, so that when the cover layer is laminated, these fibers and threads are anchored on the side of the mat facing away from the carrier layer, and any thrust forces that occur do not pull the threads apart or pull them out the threads from the active layer can cause more.
  • a tensile fiber structure is created as a reinforcement for the mat, which can withstand the highest shear and shear stresses regardless of the type of active substance stored in the active layer, and which is also protected against loss of the active substances with the cover layer. It only plays a subordinate role how the active layer is applied, whether it is laid as a prefabricated layer or is also manufactured in the course of application to the carrier layer, whether the active material is shaken or needled into the fiber material during prefabrication or only during application
  • the base layer is sprinkled on and is only needled when the active layer is needled to the base layer. The like.
  • the backing layer fibers are interwoven takes place with the active layer fibers, which threads and fibers are connected on the active layer side for anchoring to the cover layer, the heat-related lamination of the cover layer in a rational manner resulting in a welded connection between the latter and the active layer, which does not fear impairment of the active substance properties of the active layer.
  • the cover layer remains un-needled and therefore unperforated, which at least substantially impedes the emergence of active ingredient on the surface and also increases the tightness due to the lack of continuous fiber bridges.
  • bentonite For example, the swellability of bentonite or the like remains completely unaffected and when fiber structures are used as the cover layer, bentonite can also penetrate into this cover layer to the desired extent and, due to its swelling effect, also bring the required tightness with it in an overlap area of adjacent mats.
  • foils are used as a cover layer, which prevents bentonite from escaping on the surface of the cover layer and thus offers higher slip resistance on slopes, they can be welded to the active layer on the one hand and on the other hand to an overlapping mat without any signs of detachment. Due to the welding technology, the top layer is laminated to create an optimal combination of high shear strength and the desired tightness.
  • the top layer is made of spunbonded, staple fiber, textile, knitted, ribbon, foil, composite materials and the like for durable lamination.
  • synthetic materials preferably from polypropylene, polyester and polyethylene, and as a carrier layer come ribbon fabric, spun and staple fiber fleeces of different types of consolidation, fiber composites, knitted fabrics and reinforced textile structures and the like.
  • synthetic materials preferably polypropylene, polyethylene or polyester, or from natural materials for use.
  • the active layer consists of a loose fiber structure or mechanically, thermally or chemically bonded nonwovens made from a wide variety of materials and powder and / or granular active substances together, the active layer being able to comprise one or more layers of fiber-active substance composites, so that there are hardly any restrictions on the structure and the type of use of the floor mat.
  • the underside of the backing layer facing away from the backing layer is heat-treated in a manner known per se or a cover layer of synthetic material is laminated onto it by heating.
  • the fibers or the like of the active layer drawn downward when needling through the carrier layer are melted on the underside, so that their withdrawal is no longer to be feared if a shear stress occurs.
  • good strength ratios result from a laminated lower cover layer, through which the mat properties with regard to tightness, strength, resistance to rotting or the like can also be determined.
  • sand can be applied to the top layer (s) and incorporated by heating, so that a rough mat surface results and the friction conditions can be influenced.
  • bentonite, ash, activated carbon, absorption material or the like can be used as the active ingredient to build up the active layer in powder and / or granulate form, so that in addition to the known sealing mats when using bentonite as an active ingredient through ash, a soil improvement mat, through activated carbon a kind of filter mat, through absorption material, for example an oil suction mat and the like.
  • bentonite, ash, activated carbon, absorption material or the like can be used as the active ingredient to build up the active layer in powder and / or granulate form, so that in addition to the known sealing mats when using bentonite as an active ingredient through ash, a soil improvement mat, through activated carbon a kind of filter mat, through absorption material, for example an oil suction mat and the like.
  • absorption material for example an oil suction mat and the like.
  • a fiber layer 3 is applied to a carrier layer 2 and powdered and granular active ingredient 5 is applied to this fiber layer from a storage container 4.
  • the carrier layer 2 with the fiber layer 3 and the applied active substance 5 passes into a needling machine 6, in which the active substance 5 is incorporated into the fiber layer 3 to form a fiber-active substance composite and, on the other hand, the active layer 7 consisting of the fiber-active substance composite is needled to the carrier layer 2 becomes.
  • a cover layer 8 is laminated onto the active layer 7 on the top side facing away from the carrier layer, with heating by means of a heating device 9, in order to thereby connect the upstanding fiber ends to the cover layer 8.
  • a kind of heat sealing of the fiber ends projecting on the underside can be carried out on the underside of the carrier layer 2 facing away from the active layer, or a further cover layer 11 for fixing the underside fibers can be laminated on.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Nonwoven Fabrics (AREA)
EP96890039A 1995-03-07 1996-03-07 Tapis pour terrains Withdrawn EP0731220A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT39095A ATA39095A (de) 1995-03-07 1995-03-07 Bodenmatte
AT390/95 1995-03-07

Publications (1)

Publication Number Publication Date
EP0731220A1 true EP0731220A1 (fr) 1996-09-11

Family

ID=3489334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96890039A Withdrawn EP0731220A1 (fr) 1995-03-07 1996-03-07 Tapis pour terrains

Country Status (2)

Country Link
EP (1) EP0731220A1 (fr)
AT (1) ATA39095A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036229A1 (fr) * 1998-12-17 2000-06-22 Nabento Vliesstoff Gmbh Mat d'etancheite et son procede de fabrication
EP1347108A2 (fr) * 2002-03-22 2003-09-24 Schomburg GmbH System-Baustoffe Matériau d'étanchéité en feuille avec une couche d'adhésion
EP1496162A1 (fr) * 2003-07-10 2005-01-12 Yuley Stoyanoff Produit géosynthétique isolant à structure stable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991000939A1 (fr) * 1989-07-13 1991-01-24 Knowles Albert H Produit de construction
EP0436928A1 (fr) * 1989-12-28 1991-07-17 Phillips Petroleum Company Méthode et géosystème multicouche
DE4122993A1 (de) * 1991-07-11 1993-01-14 Naue Fasertechnik Verfahren zur verbesserung des faserverbundes von vernadelten wasser- und/oder oelundurchlaessigen dichtungsmatten
DE4131391A1 (de) * 1991-09-20 1993-04-01 Voest Alpine Umwelttechn Gmbh Oberflaechenabdichtungssystem

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991000939A1 (fr) * 1989-07-13 1991-01-24 Knowles Albert H Produit de construction
EP0436928A1 (fr) * 1989-12-28 1991-07-17 Phillips Petroleum Company Méthode et géosystème multicouche
DE4122993A1 (de) * 1991-07-11 1993-01-14 Naue Fasertechnik Verfahren zur verbesserung des faserverbundes von vernadelten wasser- und/oder oelundurchlaessigen dichtungsmatten
DE4131391A1 (de) * 1991-09-20 1993-04-01 Voest Alpine Umwelttechn Gmbh Oberflaechenabdichtungssystem

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000036229A1 (fr) * 1998-12-17 2000-06-22 Nabento Vliesstoff Gmbh Mat d'etancheite et son procede de fabrication
EP1347108A2 (fr) * 2002-03-22 2003-09-24 Schomburg GmbH System-Baustoffe Matériau d'étanchéité en feuille avec une couche d'adhésion
EP1347108A3 (fr) * 2002-03-22 2004-04-14 Schomburg GmbH System-Baustoffe Matériau d'étanchéité en feuille avec une couche d'adhésion
EP1496162A1 (fr) * 2003-07-10 2005-01-12 Yuley Stoyanoff Produit géosynthétique isolant à structure stable

Also Published As

Publication number Publication date
ATA39095A (de) 1996-04-15

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