WO1992002698A1 - Process for laying ceramic tile and natural stone coverings - Google Patents

Process for laying ceramic tile and natural stone coverings Download PDF

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Publication number
WO1992002698A1
WO1992002698A1 PCT/EP1991/001458 EP9101458W WO9202698A1 WO 1992002698 A1 WO1992002698 A1 WO 1992002698A1 EP 9101458 W EP9101458 W EP 9101458W WO 9202698 A1 WO9202698 A1 WO 9202698A1
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WO
WIPO (PCT)
Prior art keywords
natural stone
fleece
coverings
ceramic tile
stone coverings
Prior art date
Application number
PCT/EP1991/001458
Other languages
German (de)
French (fr)
Inventor
Hans-Peter Sattler
Werner Hagemann
Friedrich Einecke
Horst Marten
Original Assignee
Henkel Kommanditgesellschaft Auf Aktien
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 Henkel Kommanditgesellschaft Auf Aktien filed Critical Henkel Kommanditgesellschaft Auf Aktien
Publication of WO1992002698A1 publication Critical patent/WO1992002698A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/02177—Floor elements for use at a specific location
    • E04F15/02188—Floor elements for use at a specific location for use in wet rooms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/08—Flooring or floor layers composed of a number of similar elements only of stone or stone-like material, e.g. ceramics, concrete; of glass or with a top layer of stone or stone-like material, e.g. ceramics, concrete or glass
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/182—Underlayers coated with adhesive or mortar to receive the flooring

Definitions

  • the invention relates to a method for laying ceramic and natural stone coverings according to the preamble of the main claim.
  • a so-called interchangeable fleece is fixed on the substrate after, for example, to prepare absorbent substrates, these are treated with a dispersion primer.
  • This dispersion primer binds the dust, reduces the absorbency and prevents loosening of the fixation of the interchangeable fleece.
  • the interchangeable fleece is fixed on this dispersion primer by means of a dispersion fixing adhesive. On the glued to the surface in this way
  • Interchangeable fleece is laid in a hydraulically hardening flexible thin-bed mortar.
  • the invention has for its object to overcome the disadvantages known from the prior art and to provide a method in which both the laying of ceramic and natural stone coverings is simplified in terms of work and material, while ensuring that the coverings are problem-free can be resumed in whole or in part without damaging or changing the underlay surface in any way.
  • the nonwoven to be used in accordance with the invention is a dimensionally stable nonwoven, in particular a polyester nonwoven of the type such as that used in German patent application P 36 00 807.9 are described.
  • a polyester nonwoven of the type such as that used in German patent application P 36 00 807.9 are described.
  • such nonwovens are described for the laying of floor coverings, the person skilled in the art understanding in this area of carpets, PVC or linoleum coverings.
  • a particularly suitable polyester fleece of this type for laying carpets and CV coverings in webs is commercially available under the name "Thomsit”. Surprisingly, it has been shown that a fleece of this type not only has the tensile strength required for laying ceramic tiles according to the invention. and natural stone coverings is necessary, but also has a surface which combines outstandingly with the hydraulically and physically setting adhesive required for laying natural stone or ceramic coverings, such as a two-component adhesive (cement / dispersion).
  • the adhesive used according to the invention is conceptually a commercially available product, which is, however, set particularly flexibly and early on.
  • the adhesive is usually an adhesive based on a 2-component system consisting of a so-called powder component (A) and a dispersion component (B).
  • Component (A) contains a cement combination and possibly redispersion powder as well as conventional additives for setting and consistency regulation and fillers such as quartz sand and / or quartz powder as a binder.
  • Component (B) usually contains a plastic dispersion such as, for example, a styrene-acrylate dispersion and known additives for adjusting the rheology, the stability and the storage stability.
  • the adhesive preferably has a deformability (flexibility) of> 0.3 mm and an adhesive tensile strength (early strength) of 3 h j> 1 N / mm 2 after 3 h according to DIN 18156, part 2.
  • This special mortar is preferably applied with a tooth straightener with 8x8x8mm teeth or larger.
  • the bonding is preferably carried out using the thin bed method according to DIN 18157.
  • the grouting is done with flexibly adjusted mineral grout, for example Ceresit grout-flexible and in the connection area with permanently elastic joint sealants such as Ceresit-SKM; if necessary, self-adhesive (plastic) profile strips can also be used in the edge area. In any case, it must be ensured that uncontrolled water access from the wall area is impossible and that the connection in the wall area is flexible. Because non-elastic jointing can lead to tension and / or cracks in the material in this area in the long term, sealing by means of a joint sealing compound is a preferred embodiment.
  • the invention is illustrated by the following example, in which a method according to the invention is described in which a ceramic or natural stone covering is applied to a glued parquet surface in a private living area or an office: 1. Production of the covering
  • the covering laid in this way can be picked up in a simple manner without affecting the surface of the substrate as follows:
  • the method according to the invention is particularly suitable in the area of heating coats, non-load-bearing floor coatings, superficially non-load-bearing concrete and screed surfaces and for the glued parquet surfaces.

Abstract

A process is disclosed for laying ceramic tile and natural stone coverings in weather and humidity protected areas by means of a non-woven and of a thin mortar bath for fixing the ceramic tile or natural stone coverings on the non-woven. Webs of non-woven are directly laid on the previously cleaned substrate surface, side by side, and the joints between the ceramic tile or natural stone coverings are then pointed in a known manner according to a thin bath process, without bonding to the adjacent construction elements.

Description

Verfahren zur Verlegung von Keramik- und Natursteinbelägen Process for laying ceramic and natural stone coverings
Beschreibungdescription
Die Erfindung betrifft ein Verfahren zur Verlegung von Keramik- und Natursteinbelägen gemäß Oberbegriff des Hauptanspruchs.The invention relates to a method for laying ceramic and natural stone coverings according to the preamble of the main claim.
Bei einem derartigen Verfahren, wie es beispielsweise im Katalog der Firma Utz von 1990 beschrieben wird, wird ein sogenanntes Wechselvlies auf dem Untergrund fixiert, nachdem zur Vorbereitung beispielsweise saugfähiger Untergründe diese mit einem Dispersionsvoranstrich behandelt werden. Dieser Dispersionsvorstrich bindet den Staub, reduziert die Saugfähigkeit und verhindern das Lösen der Fixierung des Wechselvlieses. Auf diesem Dispersionsvorstrich wird mittels eines Dispersions-Fixierklebstoffes das Wechselvlies fixiert. Auf dem auf diese Weise mit dem Untergrund verklebtenWith such a method, as described, for example, in the catalog of the Utz company from 1990, a so-called interchangeable fleece is fixed on the substrate after, for example, to prepare absorbent substrates, these are treated with a dispersion primer. This dispersion primer binds the dust, reduces the absorbency and prevents loosening of the fixation of the interchangeable fleece. The interchangeable fleece is fixed on this dispersion primer by means of a dispersion fixing adhesive. On the glued to the surface in this way
Wechselvlies wird in einem hydraulisch härtenden flexiblen Dünnbettmörtel der Keramikbelag verlegt.Interchangeable fleece is laid in a hydraulically hardening flexible thin-bed mortar.
Insbesondere bei Untergründen, die absanden, kreiden oder nicht fest haftende Anstriche oder Oberflächenbeläge aufweisen, ist bisher bei der Verlegung von Keramik- und Natursteinbelägen die Vorbehandlung mit einem Dispersionsvor¬ strich notwendig, auf dem dann das Wechselvlies verklebt wird; diese Verfahrensweise ist material- und arbeitsauf¬ wendig.Especially in the case of substrates that sand, chalk or have non-adherent coatings or surface coverings, pretreatment with a dispersion primer on which the interchangeable fleece is then bonded has been necessary when laying ceramic and natural stone coverings; this procedure is expensive in terms of material and labor.
Ebenfalls nachteilig ist, daß die Wiederaufnahme des Belages, beispielsweise beim vollständigen oder teilweisen Auswechseln, zu Beschädigungen oder Rückständen auf der Oberfläche des Untergrundes führen, wobei bei der Entfernung normalerweise zusätzlicher erheblicher Arbeitsaufwand notwendig ist.It is also disadvantageous that the resumption of the covering, for example when replacing it completely or partially, leads to damage or residues on the surface of the substrate, with the removal of which usually requires additional considerable work.
Der Erfindung liegt die Aufgabe zugrunde, die aus dem Stand der Technik bekannten Nachteile zu überwinden und ein Verfahren zur Verfügung zustellen, bei dem sowohl die Verlegung von Keramik- und Natursteinbelägen arbeits- und materialmäßig vereinfacht wird, wobei zugleich gewährleistet ist, daß die Beläge problemlos ganz oder teilweise wieder aufgenommen werden können, ohne die Unterlagenoberfläche in irgendeiner Weise zu beschädigen oder zu verändern.The invention has for its object to overcome the disadvantages known from the prior art and to provide a method in which both the laying of ceramic and natural stone coverings is simplified in terms of work and material, while ensuring that the coverings are problem-free can be resumed in whole or in part without damaging or changing the underlay surface in any way.
Erfindungsgemäß wird dieses durch die Maßnahmen erreicht, die im kennzeichnenden Teil des Hauptanspruchs wiedergegeben sind. Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens ergeben sich aus den nachfolgen- den Ansprüchen 2 bis 4.According to the invention this is achieved by the measures which are given in the characterizing part of the main claim. Further advantageous embodiments of the method according to the invention result from the following claims 2 to 4.
Bei dem erfindungsgemäß zu verwendenen Vlies handelt es sich um ein dimensionsstabiles Vlies, insbesondere ein Polyestervlies der Art, wie sie beispielsweise in der deutschen Patentanmeldung P 36 00 807.9 beschrieben sind. In der vorgenannten Veröffentlichung werden derartige Vliese für die Verlegung von Bodenbelägen beschrieben, wobei der Fachmann auf diesem Gebiet unter Bodenbelägen Teppichböden, PVC- oder Linoleumbeläge versteht.The nonwoven to be used in accordance with the invention is a dimensionally stable nonwoven, in particular a polyester nonwoven of the type such as that used in German patent application P 36 00 807.9 are described. In the abovementioned publication, such nonwovens are described for the laying of floor coverings, the person skilled in the art understanding in this area of carpets, PVC or linoleum coverings.
Ein besonders geeignetes Polyestervlies dieser Art zur Verlegung von Teppichböden und CV-Belägen in Bahnen ist unter der Bezeichnung "Thomsit" im Handel, überraschenderweise hat sich gezeigt, daß ein Vlies dieser Art nicht nur die Reißfestigkeit aufweist, die für die erfindungsgemäße Verlegung von Keramik- und Natursteinbelägen notwendig ist, sondern außerdem eine Oberfläche aufweist, die sich hervor¬ ragend mit dem zum Verlegen von Naturstein- oder keramischen Belegen benötigten hydraulisch physikalisch abbindenden Kleber wie einen Zwei-K-Kleber (Zement/Dispersion) verbindet.A particularly suitable polyester fleece of this type for laying carpets and CV coverings in webs is commercially available under the name "Thomsit". Surprisingly, it has been shown that a fleece of this type not only has the tensile strength required for laying ceramic tiles according to the invention. and natural stone coverings is necessary, but also has a surface which combines outstandingly with the hydraulically and physically setting adhesive required for laying natural stone or ceramic coverings, such as a two-component adhesive (cement / dispersion).
Der erfindungsgemäß verwendete Kleber ist von der Konzeption her ein marktübliches Produkt, das jedoch besonders flexibel und frühfest eingestellt wird. Der Kleber ist in der Regel ein Kleber auf der Basis eines 2-Komponen- ten-Systems aus einer sogenannten Pulverkomponente (A) und einer Dispersionskomponente (B) . Komponente (A) enthält als Bindemittel eine Zementkombination und ggfs. Redispersions- pulver sowie übliche Additive zur Abbinde- und Konsistenzre¬ gulierung und Füllstoffe wie Quarzsand und/oder Quarzmehl. Komponente (B) enthält üblicherweise eine Kunststoffdisper- sion wie beispielsweise eine Styrol-Acrylat-Dispersion sowie bekannte Additive zur Einstellung der Rheologie, der Stand¬ festigkeit und der Lagerstabilität. Erfindungsgemäß besitzt der Kleber bevorzugt eine Verformbarkeit (Flexibilität) von > 0,3 mm und eine Haftzugfestigkeit (Frühfestigkeit) von 3 h j> 1 N/mm2 nach 3 h gemäß DIN 18156, Teil 2.The adhesive used according to the invention is conceptually a commercially available product, which is, however, set particularly flexibly and early on. The adhesive is usually an adhesive based on a 2-component system consisting of a so-called powder component (A) and a dispersion component (B). Component (A) contains a cement combination and possibly redispersion powder as well as conventional additives for setting and consistency regulation and fillers such as quartz sand and / or quartz powder as a binder. Component (B) usually contains a plastic dispersion such as, for example, a styrene-acrylate dispersion and known additives for adjusting the rheology, the stability and the storage stability. According to the invention, the adhesive preferably has a deformability (flexibility) of> 0.3 mm and an adhesive tensile strength (early strength) of 3 h j> 1 N / mm 2 after 3 h according to DIN 18156, part 2.
Der Auftrag dieses Spezialmörtels erfolgt bevorzugt mit einem Zahnglätter einer Zahnung 8x8x8mm oder größer.This special mortar is preferably applied with a tooth straightener with 8x8x8mm teeth or larger.
Die Verklebung erfolgt bevorzugt im Dünnbettverfahren nach DIN 18157.The bonding is preferably carried out using the thin bed method according to DIN 18157.
Die Verfugung _erfolgt mit flexibel eingestellten mineralischen Fugenmörteln, beispielsweise Ceresit Fugenmör¬ tel-flexibel und im Anschlußbereich mit dauerelastischen Fugendichtungsmassen wie Ceresit-SKM; gegebenenfalls können im Randbereich auch selbstklebende (Kunststoff-)Profilleisten verwendet werden. In jedem Fall muß sichergestellt werden, daß aus dem Wandbereich unkontrollierter Wasserzugang unmöglich ist, und daß der Anschluß im Wandbereich flexibel ist. Weil eine nichtelastische Verfugung-auf Dauer in diesem Bereich zu Spannungen und/oder Rissen im Material führen kann, ist die Abdichtung mittels Fugendichtungsmasse eine bevorzugte Ausführungsform.The grouting is done with flexibly adjusted mineral grout, for example Ceresit grout-flexible and in the connection area with permanently elastic joint sealants such as Ceresit-SKM; if necessary, self-adhesive (plastic) profile strips can also be used in the edge area. In any case, it must be ensured that uncontrolled water access from the wall area is impossible and that the connection in the wall area is flexible. Because non-elastic jointing can lead to tension and / or cracks in the material in this area in the long term, sealing by means of a joint sealing compound is a preferred embodiment.
Die Erfindung wird anhand des folgenden Beispiels verdeutlicht, wobei ein erfindungsgemäß geeignetes Verfahren beschrieben wird, bei dem auf einer verklebten Parkettfläche in privatem Wohnbereich bzw. einem Büro ein Keramik- oder Natursteinbelag aufgebracht wird: 1. Herstellung des BelagesThe invention is illustrated by the following example, in which a method according to the invention is described in which a ceramic or natural stone covering is applied to a glued parquet surface in a private living area or an office: 1. Production of the covering
1.1 Reinigung des Untergrundes (Fegen usw.)1.1 Cleaning the surface (sweeping, etc.)
1.2 Trägermaterial mit rauher Seite nach oben auslegen und auf Raummaß zuschneiden. Im Stoßbereich (über 2,50 Raumbreite) Trägermaterial Stoß an Stoß ohne Überlappung lose verlegen.1.2 Lay out the backing material with the rough side facing up and cut to size. In the joint area (over 2.50 room width), lay the backing material loosely joint to joint without overlap.
1.3 In den Türschwellen (Eingangsbereich) Trägermaterial mit Teppichdoppelklebeband gegen Verrutschen sichern.1.3 Secure the backing material in the door sills (entrance area) with double-sided carpet tape to prevent it from slipping.
1.4 Keramisches Material/Natursteine im Dünnbettverfahren _ (nach DIN 18157) mittels 2-komponentigem Spezialmörtel nicht eingespannt verlegen.1.4 Ceramic material / natural stones using the thin-bed method _ (according to DIN 18157) do not lay clamped using 2-component special mortar.
1%5— nach frühestens 3-4 h keramischen- /Natursteinbelag mit Fugenmörtel in herkömmlicher Arbeitstechnik ohne Verbund mit den angrenzenden Bauteilen verfugen.1% 5— after 3-4 hours at the earliest, grout the ceramic / natural stone covering with grout using conventional working techniques without bonding with the adjacent components.
1.6 Rand- bzw. Anschlußfugen nach Aushärtung mit dauerelas¬ tischer Fugendichte verfüllen. 1.7 Im Eingangsbereich (Türschwelle) Fliesenkanten durch übergangsschienen sichern.1.6 Fill edge or connection joints after curing with permanently elastic joint density. 1.7 Secure the tile edges in the entrance area (threshold) using transition rails.
Der auf diese Weise verlegte Belag läßt sich in einfacher Weise ohne Beeinträchtigung der Oberfläche des Untergrundes wie folgt aufnehmen:The covering laid in this way can be picked up in a simple manner without affecting the surface of the substrate as follows:
2.1 Entfernen der Übergangsschiene2.1 Removing the transition rail
2.2. Auftrennen bzw. Einschneiden der dauerelastischen2.2. Cut or cut the permanently elastic
Verfugung. 2.3 Im Schwellenbereich beginnend Trägermaterial mit aufgeklebtem Oberbelag in Teilstücken aufnehmen.Grouting. 2.3 Starting in the threshold area, pick up the carrier material with the glued-on covering in sections.
Das erfindungsgemäße Verfahren ist besonders im Bereich von Heizstrichen, nicht tragfähigen Fußbodenanstrichen, oberflächlich nicht tragfähigen Beton-, Estrichflächen und bei den genannten verklebten Parkettflächen geeignet. The method according to the invention is particularly suitable in the area of heating coats, non-load-bearing floor coatings, superficially non-load-bearing concrete and screed surfaces and for the glued parquet surfaces.

Claims

Patentansprüche Claims
1. Verfahren zur Verlegung von Keramik- und Naturstein belägen in witterungs- und feuchtigkeitsgeschützten Bereich wie Wohnbereichen und Büros unter Verwendung eines Vlieses und eines Dünnbettmörtels zur Fixierung der Keramik- oder Natursteinbeläge auf dem Vlies, dadurch gekennzeichnet, daß dieses Vlies direkt auf die vorgereinigte Substrat oberfläche in Bahnen Stoß an Stoß aufgelegt wird, und nach dem Verlegen der Keramik- oder Natursteinbelä im Dünnbettverfahren in an sich bekannter Weise ohne Verbun mit den angrenzenden Bauteilen verfugt wird.1. Process for laying ceramic and natural stone coverings in weather and moisture-protected areas such as living areas and offices using a fleece and a thin-bed mortar for fixing the ceramic or natural stone coverings on the fleece, characterized in that this fleece directly onto the pre-cleaned substrate surface is placed in strips abutting, and after laying the ceramic or natural stone coverings in the thin bed method in a manner known per se without joining to the adjacent components.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß ein Vlies mit hoher Reißfestigkeit, insbesondere ein Polyestervlies auf die Substratoberfläche aufgelegt wird.2. The method according to claim 1, characterized in that a fleece with high tear strength, in particular a polyester fleece is placed on the substrate surface.
- 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß nach Aushärtung die Rand- bzw. Anschlußfugen mit daue elastischer Fugendichtungsmasse gefüllt werden.- 3. The method according to claim 1, characterized in that after curing, the edge or connection joints are filled with daue elastic joint sealant.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Rand- bzw. Anschlußfugen durch Profilleisten aus Kunststoff abgedichtet werden. 4. The method according to claim 1, characterized in that the edge or connection joints are sealed by plastic profiles.
PCT/EP1991/001458 1990-08-10 1991-08-02 Process for laying ceramic tile and natural stone coverings WO1992002698A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4025451.8 1990-08-10
DE4025451A DE4025451A1 (en) 1990-08-10 1990-08-10 METHOD FOR LAYING CERAMIC AND NATURAL STONE FLOORS

Publications (1)

Publication Number Publication Date
WO1992002698A1 true WO1992002698A1 (en) 1992-02-20

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PCT/EP1991/001458 WO1992002698A1 (en) 1990-08-10 1991-08-02 Process for laying ceramic tile and natural stone coverings

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DE (1) DE4025451A1 (en)
WO (1) WO1992002698A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19653857C2 (en) * 1996-12-21 2002-02-07 Lux Elements Gmbh & Co Kg Floor covering and method for manufacturing a floor covering
DE19846504A1 (en) * 1998-10-09 2000-04-27 Ralph Breede Stratified, natural, rough, undressed stone used as laying material on horizontal and vertical planes with predetermined thickness, particularly for building structures and-or agricultural locations
DE20307289U1 (en) * 2003-05-09 2003-07-24 Sakret Trockenbaustoffe Europa floor construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372942A1 (en) * 1976-12-03 1978-06-30 Bat Applic Revetements Plastiq Supporting insulation for ceramic tiles is covered with flexible film - to enhance coherence and impermeability
FR2428119A1 (en) * 1978-06-06 1980-01-04 Omerin Michel Floor tiling using polymerised sub:layer - and flexible adhesive to bond tiles and fill gaps, resulting in acoustic and thermal insulation of tiles from floor
FR2475458A1 (en) * 1980-02-08 1981-08-14 Vergnaud Jean Maurice Rubber moulding prodn. from scrap tyre powder - by heating in mould under pressure under specified condition
DE3600807A1 (en) * 1985-01-29 1986-07-31 Ebnöther AG, Sempach-Station, Sempach-Station, Gde.Neuenkirch Intermediate covering and process for laying floor coverings by the restrippable process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642569A1 (en) * 1986-12-12 1988-06-23 Utz Ag Georg RECOVERABLE FLOOR COVERING

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372942A1 (en) * 1976-12-03 1978-06-30 Bat Applic Revetements Plastiq Supporting insulation for ceramic tiles is covered with flexible film - to enhance coherence and impermeability
FR2428119A1 (en) * 1978-06-06 1980-01-04 Omerin Michel Floor tiling using polymerised sub:layer - and flexible adhesive to bond tiles and fill gaps, resulting in acoustic and thermal insulation of tiles from floor
FR2475458A1 (en) * 1980-02-08 1981-08-14 Vergnaud Jean Maurice Rubber moulding prodn. from scrap tyre powder - by heating in mould under pressure under specified condition
DE3600807A1 (en) * 1985-01-29 1986-07-31 Ebnöther AG, Sempach-Station, Sempach-Station, Gde.Neuenkirch Intermediate covering and process for laying floor coverings by the restrippable process

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EP0542791A1 (en) 1993-05-26
DE4025451A1 (en) 1992-02-13

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