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DE102006013816B3 - Producing a screed, slab or building block from door filling board comprises shredding and grinding the board to form a powder, adding a binder and adding water to form a pumpable paste - Google Patents

Producing a screed, slab or building block from door filling board comprises shredding and grinding the board to form a powder, adding a binder and adding water to form a pumpable paste Download PDF

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Publication number
DE102006013816B3
DE102006013816B3 DE200610013816 DE102006013816A DE102006013816B3 DE 102006013816 B3 DE102006013816 B3 DE 102006013816B3 DE 200610013816 DE200610013816 DE 200610013816 DE 102006013816 A DE102006013816 A DE 102006013816A DE 102006013816 B3 DE102006013816 B3 DE 102006013816B3
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Germany
Prior art keywords
screed
binder
slab
board
producing
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Expired - Fee Related
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DE200610013816
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German (de)
Inventor
Theodor Thiemann
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.)
R & T Pur Verbundsysteme oHG
R & T Pur-Verbundsysteme oHG
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R & T Pur Verbundsysteme oHG
R & T Pur-Verbundsysteme oHG
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Priority to DE200610013816 priority Critical patent/DE102006013816B3/en
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Expired - Fee Related legal-status Critical Current
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0404—Disintegrating plastics, e.g. by milling to powder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B29K2075/02—Polyureas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/724—Doors
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/60—Flooring materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

Producing a screed, slab or building block from door filling board comprising a hard polyurethane foam core lined on both sides with a glassfiber-reinforced polyester panels comprises shredding and grinding the board to form a powder, adding a binder, adding water to form a pumpable paste and either using the paste as a screed or setting it in a mold to form a slab or block.

Description

Die Erfindung betrifft ein Recyclingverfahren zur Herstellung eines Baustoffs, Baumaterials, Bauelementes oder dergleichen aus Abfallwertstoffen, wobei als Abfallwertstoff plattenförmige Türfüllungen verwendet werden, welche im Wesentlichen aus einem aus Polyurethan-Hartschaum geschäumten PUR-Dämmkern bestehen, der beidseits mittels glasfaserverstärkten Polyester-Platten, GFK-Platten, beschichtet ist, und die GFK-Platten vorzugsweise mit einem Lack beschichtet sein können.The The invention relates to a recycling process for the production of a Building materials, building materials, building elements or the like from waste materials, wherein as a waste material plate-shaped door panels are used, which essentially consist of a polyurethane rigid foam foamed polyurethane insulation core, the both sides using glass fiber reinforced Polyester plates, GRP plates, coated, and the GRP plates may preferably be coated with a lacquer.

Es ist bekannt, dass insbesondere bei der Türenherstellung, wie beispielsweise bei der Haustürenherstellung, plattenförmige Türfüllungen in einen Kunststoff- oder Aluminiumrahmen gesetzt werden. Bekannt sind gemäß der DE 44 02 912 auch faserverstärkte und Wärmedämmende Konstruktionsteile sowie Untergrundbelege gemäß der DE 198 02 602 . Für eine entsprechende Türgestaltung werden plattenförmige Türfüllungen zugeschnitten, um sie in den Rahmen einzusetzen. Bei dieser Herstellung fallen Reststücke an, die der so genannten Sondermüllentsorgung zugeführt werden müssen, da eine wieder Verwendbarkeit in der bestehenden Form nicht gegeben ist. Als äußerst problematisch gestalten sich hier die Entsorgungskosten, weil derartige verschnittene Platten letztendlich nur als Sondermüll gelten.It is known that plate-shaped door panels are placed in a plastic or aluminum frame, in particular in the production of doors, for example in front door production. Are known according to the DE 44 02 912 also fiber reinforced and heat insulating construction parts as well as background documents according to DE 198 02 602 , For a corresponding door design plate-shaped door panels are cut to use in the frame. In this production are remainders, which must be supplied to the so-called special waste disposal, as a re-usability in the existing form is not given. The disposal costs are extremely problematic here because such blended plates ultimately only count as hazardous waste.

Hieraus ergibt sich die der Erfindung zugrunde liegende Aufgabe, ein Verfahren bereit zu stellen, mit dem derartige Türfüllungsplatten wieder als Wertstoff Verwendung finden.From this results in the object underlying the invention, a method to provide, with such door panels again as recyclable material Find use.

Diese Aufgabe wird durch den Hauptanspruch gelöst. Weiterbildende Ausgestaltungen des Verfahrens und Vorzüge ergeben sich aus den Unteransprüchen.These Task is solved by the main claim. Further developments the procedure and benefits emerge from the dependent claims.

Die als Restmüll vorliegenden plattenförmigen Türfüllungen werden nach dem erfindungsgemäßen Verfahren für einen Baustoff, ein Baumaterial oder ein Bauelement verwendet. Hierzu wird in einem ersten Verfahrensschritt die plattenförmige Türfüllung geschreddert und gemahlen, so dass sich ein schaumartiges, pulverförmiges mit GFK-Fasern durchsetztes Material ergibt. In einem zweiten Verfahrensschritt wird diesem geschredderten und gemahlenem Material ein Bindemittel zugesetzt, wobei unter Zugabe von Wasser sich eine pastöse, breiige Masse ergibt. Der besondere Vorzug dieser breiigen bzw. pastösen Masse ist es, dass sie mit einer Pumpe verarbeitbar ist. So kann die breiige, pastöse Masse als Estrich verarbeitet werden, wobei die Vorzüge des ausgehärteten Estrichs neben hoher Festigkeit auch eine hohe thermische Isolierung sind. Dies bedingt einerseits, dass die während des Schreddervorgangs erzeugten GFK-Fasern sich vorteilhaft in die pastöse Masse verteilend einbinden, und wobei die PUR-Schaumbestandteile insbesondere den thermisch isolierenden Effekt herbeiführen.The as residual waste present plate-shaped door panels be according to the inventive method for one Building material, a building material or a component used. For this In a first method step, the plate-shaped door panel is shredded and ground, leaving a frothy, powdery with GFK fibers interspersed material results. In a second process step This shredded and ground material becomes a binder added, with the addition of water, a pasty, mushy Mass results. The special advantage of this pulpy or pasty mass it is that it is processable with a pump. So the mushy, pasty Mass be processed as a screed, with the benefits of hardened screed In addition to high strength and high thermal insulation. This requires on the one hand, that the generated during the shredding process GFRP fibers advantageously integrate into the pasty mass, and wherein the polyurethane foam components in particular bring about the thermal insulating effect.

Um eine hohe Bindung zu erreichen, wird als Bindemittel Zement verwendet. Somit wird gewährleistet, dass der Baustoff, das Baumaterial oder das Bauelement eine mittlere Rohdichte von ca. 978 kg/m3 aufweist, wobei, wie bereits schon beschrieben, die hohe Festigkeit für den Baustoff, das Baumaterial oder das Bauelement durch die geschredderten GFK-Fasern herbeigeführt wird, so dass sich eine Festigkeit von ca. 6210 kPa für den Baustoff ergibt.To achieve a high bond, cement is used as binder. This ensures that the building material, the building material or the component has an average density of about 978 kg / m 3 , whereby, as already described, the high strength of the building material, the building material or the component by the shredded GRP Fibers is brought about, so that results in a strength of about 6210 kPa for the building material.

Die Erfindung betrifft auch die Herstellung eines Baustoffes, Baumaterials, Bauelementes oder dergleichen aus Abfallwerstoffen, wobei als Abfallwertstoff eine plattenförmige Türfüllung verwendet wird, welche im Wesentlichen aus einem aus Polyurethan-Hartschaum geschäumten PUR-Dämmkern besteht, der beidseits mit glasfaserverstärkten Polyester-Platten, GFK-Platten, beschichtet ist, und die GFK-Platten mit einem Lack beschichtet. Die plattenförmigen Türfüllungen werden geschreddert und gemahlen, so dass sich eine schaumförmige bzw. pulverförmige mit GFK-Fasern versetzte Masse ergibt, die mit einem Bindemittel und Wasser versetzt ist, so dass sich eine pastöse, breiige Masse ergibt, die mittels einer Pumpe pumpbar ist, und wobei die pastöse Masse entweder als. Estrich oder in einer Form als Platte oder als Formstein nach einer Abbindezeit verwendbar ist.The Invention also relates to the production of a building material, building material, Component or the like from waste substances, being used as waste value a plate-shaped Door panel is used, which essentially consists of a PUR insulating core foamed from rigid polyurethane foam, the two-sided with glass fiber reinforced polyester plates, GRP panels, coated, and the GRP panels with a paint coated. The plate-shaped door panels are shredded and ground, so that a foam-like or powdery mixed with fiberglass fibers results in mass with a binder and water is added, so that there is a pasty, pulpy mass, the Pumpable by means of a pump, and wherein the pasty mass either as. Screed or in a form as a plate or as a molded block usable after a setting time.

Ein Ausführungsbeispiel wird anhand der nachstehenden Figuren näher erläutert; dabei zeigen:One embodiment will be explained in more detail with reference to the following figures; show:

1: Eine schematische Darstellung des Recyclingverfahrens: und 1 : A schematic representation of the recycling process: and

2: Eine perspektivische Darstellung eines Formsteins aus dem erfindungsgemäßen recycelten Baustoff. 2 : A perspective view of a molded block from the recycled building material according to the invention.

Die 1 zeigt in schematischer Darstellung ein Verfahren 1 zur Herstellung eines Estrichs, einer Platte oder eines Formsteins wie er beispielsweise als Formstein 12 in der 2 dargestellt ist. Dabei bedient sich das Verfahren 1 eines Abfallwertstoffes 2, der aus plattenförmigen Türfüllungen 3 besteht. Die plattenförmige Türfüllung 3 besteht dabei im Wesentlichen aus einem aus Polyurethan-Hartschaum geschäumten PUR-Dämmkern 4, der beidseits mit glasfaserverstärkten Polyester-Platten, GFK-Platten 5, beschichtet ist. Dabei können die GFK-Platten 5 vorzugsweise mit einem Lack beschichtet sein.The 1 shows a schematic representation of a method 1 for producing a screed, a slab or a molded block such as, for example, as a molded block 12 in the 2 is shown. In doing so, the process uses 1 a waste value 2 made of plate-shaped door panels 3 consists. The plate-shaped door panel 3 consists essentially of a polyurethane rigid foam foamed PUR insulating core 4 , on both sides with glass fiber reinforced polyester plates, GRP plates 5 , coated. Here are the GRP plates 5 preferably be coated with a lacquer.

Wie aus der 1 zu erkennen ist, wird zunächst in einem ersten Verfahrensschritt die plattenförmige Türfüllung 3 geschreddert und/oder gemahlen, wie dies durch die zwei Walzen 6 und 7 angedeutet ist, so dass sich ein schaumartiges bzw. pulverförmiges mit GFK-Fasern 8 durchsetztes Material 9 ergibt. Dann erfolgt in einem zweiten Verfahrensschritt die Zugabe eines Bindemittels 10, wobei dann dem mit Bindemittel versetzten Material 9 in einem dritten Verfahrensschritt Wasser zugesetzt wird, so dass sich eine pastöse, breiige Masse 11 ergibt, die mittels einer nicht näher dargestellten Pumpe weiter verarbeitet werden kann.Like from the 1 can be seen, is first in a first process step, the plate-shaped door panel 3 shredded and / or mowed like this through the two rollers 6 and 7 is hinted, so that a foam-like or powdery with fiberglass fibers 8th interspersed material 9 results. Then, in a second process step, the addition of a binder 10 , in which case the binder-added material 9 Water is added in a third process step, so that a pasty, pulpy mass 11 results, which can be further processed by means of a pump, not shown.

Hierbei kann insbesondere die pastöse Masse 11 entweder als Estrich oder in einer Form als Platte oder als Formstein 12, wie beispielsweise in der 2 dargestellt, nach einer Abbindezeit verwendet werden. Als Bindemittel 10 wird hierbei Zement verwendet, der neben den GFK-Fasern 8 dem Baustoff die hinreichende Festigkeit verleiht. Die schaumförmigen Bestandteile des PUR-Hartschaums verleihen dem Baustoff die hinreichende Isolier- und Wärmedämmfähigkeit.Here, in particular, the pasty mass 11 either as a screed or in a form as a plate or as a molded block 12 , such as in the 2 shown to be used after a setting time. As a binder 10 Here, cement is used, in addition to the fiberglass fibers 8th the building material gives the sufficient strength. The foam-like components of the rigid polyurethane foam give the building material sufficient insulation and thermal insulation.

Der Formstein 12, wie er sich in der 2 darstellt, kann hierbei eine mittlere Rohdichte von etwa 1000 kg/m3 aufweisen, wobei er etwa über eine Festigkeit von etwa 6210 kPa verfügt.The form stone 12 how he is in the 2 In this case, it can have a mean apparent density of about 1000 kg / m 3 , with about a strength of about 6210 kPa.

Claims (3)

Verfahren zur Herstellung eines Estrichs, einer Platte oder eines Formsteins, bei dem – plattenförmige Türfüllungen (3), welche im Wesentlichen aus einem aus Polyurethan-Hartschaumkern bestehen, der beidseits mit glasfaserverstärkten Polyester-Platten beschichtet ist, in einem ersten Schritt geschreddert und gemahlen werden, so dass sich ein pulverförmiges Material (8) ergibt, – dass in einem zweiten Schritt mit einem Bindemittel versetzt wird, – in einem dritten Schritt Wasser zugesetzt wird, so dass sich eine pastöse, breiige Masse (11) ergibt, die mittels einer Pumpe pumpbar ist, – und die pastöse Masse nach einer Abbindezeit einen Estrich oder nach Abbinden in einer Form eine Platte oder einen Formstein (12) ergibt.Method for producing a screed, a slab or a shaped block, in which - slab-shaped door panels ( 3 ), which consist essentially of a rigid polyurethane foam core, which is coated on both sides with glass fiber reinforced polyester plates, shredded and ground in a first step, so that a powdery material ( 8th ), - that is added in a second step with a binder, - in a third step, water is added, so that a pasty, pulpy mass ( 11 ), which is pumpable by means of a pump, - and the pasty mass after a setting time a screed or after setting in a form a plate or a molded block ( 12 ). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass Türfüllungen einsetzt werden, deren glasfaserverstärkte Polyester-Platten mit Lack beschichtet sind.Method according to claim 1, characterized in that that door panels are used, whose glass fiber reinforced polyester plates with Lacquer are coated. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass als Bindemittel (10) Zement verwendet wird.Process according to claim 1 or 2, characterized in that as binder ( 10 ) Cement is used.
DE200610013816 2006-01-03 2006-03-23 Producing a screed, slab or building block from door filling board comprises shredding and grinding the board to form a powder, adding a binder and adding water to form a pumpable paste Expired - Fee Related DE102006013816B3 (en)

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Application Number Priority Date Filing Date Title
DE200610013816 DE102006013816B3 (en) 2006-01-03 2006-03-23 Producing a screed, slab or building block from door filling board comprises shredding and grinding the board to form a powder, adding a binder and adding water to form a pumpable paste

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202006000717 2006-01-03
DE202006000717.2 2006-01-03
DE200610013816 DE102006013816B3 (en) 2006-01-03 2006-03-23 Producing a screed, slab or building block from door filling board comprises shredding and grinding the board to form a powder, adding a binder and adding water to form a pumpable paste

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1024599B1 (en) * 2016-09-22 2018-04-25 Unilin Bvba Insulating granulate and floor construction containing such granulate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4402912A1 (en) * 1993-02-01 1994-11-24 Wasenius Birger E Fibre-reinforced and heat-insulating structural part
DE19802602A1 (en) * 1997-07-22 1999-08-05 Wulff Gmbh U Co Laying carpets and other floor covering materials with or without using an adhesive

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4402912A1 (en) * 1993-02-01 1994-11-24 Wasenius Birger E Fibre-reinforced and heat-insulating structural part
DE19802602A1 (en) * 1997-07-22 1999-08-05 Wulff Gmbh U Co Laying carpets and other floor covering materials with or without using an adhesive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1024599B1 (en) * 2016-09-22 2018-04-25 Unilin Bvba Insulating granulate and floor construction containing such granulate

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