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WO1999028375A1 - Method for producing a sandwich-type structure - Google Patents

Method for producing a sandwich-type structure Download PDF

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Publication number
WO1999028375A1
WO1999028375A1 PCT/EP1998/005674 EP9805674W WO9928375A1 WO 1999028375 A1 WO1999028375 A1 WO 1999028375A1 EP 9805674 W EP9805674 W EP 9805674W WO 9928375 A1 WO9928375 A1 WO 9928375A1
Authority
WO
WIPO (PCT)
Prior art keywords
sandwich
quality
surface coating
prefabricated
plate
Prior art date
Application number
PCT/EP1998/005674
Other languages
German (de)
French (fr)
Inventor
Erich Grundmann
Original Assignee
Sms Sondermaschinen Gmbh Recyclingtechnik
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
Priority claimed from DE1997152399 external-priority patent/DE19752399A1/en
Application filed by Sms Sondermaschinen Gmbh Recyclingtechnik filed Critical Sms Sondermaschinen Gmbh Recyclingtechnik
Priority to DE19881826T priority Critical patent/DE19881826D2/en
Priority to AU35874/99A priority patent/AU3587499A/en
Publication of WO1999028375A1 publication Critical patent/WO1999028375A1/en

Links

Classifications

    • 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
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/003—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29K2105/26—Scrap or recycled material
    • 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

Definitions

  • the invention relates to a method for producing a sandwich-like structure with at least two layers, at least one of which consists of at least partially new, high-quality material and at least one of low-quality material, in particular recycling material, at least one layer in the pasty to liquid state under pressure with another Layer is connected.
  • the layer is made of new, high-quality material and the layer Recycled material bonded together using a special adhesive process. It is a floor covering made of two rubber layers. When gluing together, the rubber layers are first sealed with a pore adhesive, whereupon the two sealed rubber layers are glued together. As a result, a large number of procedural steps are necessary. It is cheaper to produce a floor covering in which the number of process steps is reduced.
  • a sandwich-like structure consisting of two layers is already known, in which both layers, which consist of rubber, are connected to one another in a pasty to liquid state under pressure. In this structure, however, the two layers migrate or flow into one another, so that the structure must be relatively thick in order to form a reasonably defined structure. Therefore, this known structure is not suitable for floor coverings because it is too thick.
  • the object of the present invention is to produce a method or a structure with the advantages of reducing the number of steps, which is thin enough and yet resistant to wear and tread and yet elastic, for example to form a material-saving floor covering.
  • This object is achieved by a method or a structure in which at least one layer of new, high-quality material as a thin plate-like Coating is made of high-quality, wear-resistant plastic and is distributed in thin or slightly liquid form and a predetermined amount on the bottom of a plate mold and a prefabricated mat or plate made of low-quality material, in particular recycling material, is pressed onto it.
  • the mat or plate made of recycled material is already in solid form, the layers do not migrate into one another, but only interlock with their surface irregularities and it is possible to produce a sandwich-like structure that can serve as a floor covering.
  • the mat or plate and the thin surface coating can also be a fabric with a particularly net-like structure, e.g. a glass fiber rowing fabric can be introduced, through which the thin or slightly liquid plastic can connect to the prefabricated mat or plate.
  • the bottom of the plate shape is preferably profiled, so that the outwardly facing surface of the thin plate-like coating made of high-quality, wear-resistant plastic is also profiled. Such profiling is used for slip resistance and tread resistance when using the sandwich-like structure as a floor covering.
  • the outwardly facing surface of the thin surface coating is also preferably exposed high-quality wear-resistant plastic as profiling in the form of nubs, which has proven to be particularly cheap for the stated purpose as a non-slip and non-slip floor covering.
  • the high-quality, wear-resistant plastic for the plate-like coating preferably consists of polyurethane.
  • This material has particularly favorable and wear-resistant properties. It has low impact sound, can be made in all colors and hardness and is UV-resistant.
  • the prefabricated mat or plate preferably consists of low-quality material made from recycled rubber.
  • the recycling rubber is also preferably obtained from scrapped car tires.
  • the prefabricated mat or plate preferably consists of low-quality material made from recycled cable insulation scrap. Recycled cable insulation scrap can be obtained particularly cheaply, with recycling receipts even being paid for just to ensure disposal.
  • the prefabricated mat or plate can also consist at least partially of lower quality material such as wood or pressboard.
  • the pressboard material can also be made from recycled wood.
  • the object is also achieved in that a prefabricated thin surface coating for forming a sandwich structure from at least partially new, high-quality material in solid form is placed in the bottom of a plate mold and then a layer of liquid to pasty low-quality material, in particular recycling material, evenly thereon is applied and the two materials are joined together under pressure, the two materials having binders which can be bonded to one another.
  • one of the two layers is also in a fixed form, so that the two materials cannot migrate into one another.
  • the binder achieves a particularly intimate binding effect between the two layers.
  • the prefabricated thin surface coating preferably consists of new colored, UV-resistant, wear-resistant rubber.
  • the new rubber can be made in any color.
  • the prefabricated thin surface coating likewise preferably consists of a mixture of, for example, colored new UV-resistant wear-resistant rubber and recycled rubber. Because the high-quality surface coating contains a mixture of new rubber and recycled rubber, the price of the sandwich-like structure is further reduced and the environmental advantages are improved. Furthermore, the recycled rubber portion is preferably obtained from scrapped car tires.
  • the prefabricated thin surface coating is preferably split off from a block. By splitting off a block, the prefabricated thin surface coating can be made as thin as desired.
  • the prefabricated thin surface coating is preferably produced 2 mm thick.
  • the prefabricated thin surface coating is also preferably produced 0.5 mm thick.
  • the layer is preferably made from liquid to pasty, low-quality material made from recycled rubber.
  • the recycling rubber is preferably obtained from scrapped car tires.
  • the prefabricated thin surface coating and the layer of liquid to pasty, low-quality material each contain 6% binder.
  • the layer of high quality material is a thin plate-like Polyurethane coating.
  • This layer is distributed in thin or slightly liquid form and a predetermined amount on the bottom of a plate mold.
  • the plate shape contains nub-like structures in the negative, so that the thin plate-like coating also has nubs after hardening. These knobs are particularly favorable for the tread resistance of the floor coverings.
  • the polyurethane is particularly high quality and wear-resistant and is particularly suitable for the surface layer of floor coverings.
  • the prefabricated mat made of low-quality material consists of recycled rubber, which is obtained from scrapped car tires. The scrapped car tires are processed into granules or rubber powder, which is heated so that a uniform mat is created, which is cooled again after heating. This mat made of low-quality material is pressed onto the thin or slightly liquid layer of polyurethane.
  • the polyurethane combines excellently with the recycling rubber, so that the sandwich-like structure is finished after the polyurethane has hardened.
  • a thin surface coating is produced from a mixture of new, high-quality, UV-resistant, wear-resistant, colored rubber.
  • This rubber compound is produced in block form, from which the surface coating is split off by a splitting knife.
  • the prefabricated thin surface coating is placed in the bottom of a platform and a layer of liquid is placed on it to pasty recycled rubber applied.
  • both materials are bonded together under pressure, both materials having binders that can be bonded to one another.
  • the surface coating is preferably 0.5 mm to 2 mm thick, which represents a small proportion of the sandwich structure, so that a clear price and environmental advantage is ensured.
  • the layer of liquid to pasty low-quality material which is made of recycled rubber, is obtained from granulate or flour from scrapped car tires. This granulate or flour is heated until the material is liquid to pasty. It is applied evenly to the surface coating, whereby both materials are bonded together under pressure.
  • the binder which is present in both materials, ensures an excellent bond between the two materials.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to a method for producing a sandwich-type structure, preferably with two layers. In one embodiment, a thin surface coating consisting of a given amount of high-quality, abrasion-proof plastic in a thin or slightly liquid form is spread on top of a board. A prefabricated mat or board made of low-quality material, especially recycled material, is then pressed thereon. The structure is completed when the surface coating hardens. In another embodiment, a prefabricated thin surface coating consisting of novel, high-quality material in a solid form is inserted into the bottom of the board and a homogenous coating of liquid - dough-like low quality-material, especially recycled material, is applied thereto and both materials are joined to each other under pressure. Both materials contain bonding agents which can be combined with each other, resulting in excellent adhesion for both layers.

Description

BESCHREIBUNG DESCRIPTION
Verfahren zur Herstellung einer sandwichartigen StrukturMethod of making a sandwich structure
Die Erfindung betrifft ein Verfahren zur Herstellung einer sandwichartigen Struktur mit mindestens zwei Schichten, von welchen mindestens eine aus zumindest teilweise neuem hochwertigem Material besteht und mindestens eine aus geringwertigem Material, insbesondere Recyclingmaterial, wobei mindestens eine Schicht in teigigem bis flüssigem Zustand unter Druck mit einer weiteren Schicht verbunden wird.The invention relates to a method for producing a sandwich-like structure with at least two layers, at least one of which consists of at least partially new, high-quality material and at least one of low-quality material, in particular recycling material, at least one layer in the pasty to liquid state under pressure with another Layer is connected.
Beispielsweise Fußbodenbeläge zur Gänze aus neuem, hochwertigem Material herzustellen, ist verhältnismäßig teuer und belastet die Umwelt durch einen erhöhten Ressourcenverbrauch. Günstiger und umweltschonender ist es, beispielsweise einen Fußbodenbelag aus einer dünnen Oberflächenschicht aus neuem hochwertigem Material bzw. einer Mischung von neuem hochwertigem Material und Recyclingmaterial herzustellen und einer darunterliegenden Schicht aus Recyclingmaterial.For example, manufacturing floor coverings entirely from new, high-quality material is relatively expensive and pollutes the environment due to increased resource consumption. It is cheaper and more environmentally friendly to produce, for example, a floor covering from a thin surface layer made of new high-quality material or a mixture of new high-quality material and recycling material and an underlying layer of recycling material.
Ein solcher Fußbodenbelag ist bereits bekannt. Bei dem bekannten Fußbodenbelag sind die Schicht aus neuem, hochwertigem Material und die Schicht aus Recyclingmaterial durch einen speziellen Klebevorgang miteinander verbunden. Es handelt sich um einen Fußbodenbelag aus zwei Gummischichten. Beim Zusammenkleben werden zunächst die Gummischichten durch einen Porenkleber versiegelt, worauf die beiden versiegelten Gummischichten miteinander verklebt werden. Dadurch ist eine Vielzahl von Verfahrensschritten nötig. Günstiger ist es, einen Fußbodenbelag herzustellen, bei dem die Zahl der Verfahrensschritte verringert ist.Such a floor covering is already known. In the known floor covering, the layer is made of new, high-quality material and the layer Recycled material bonded together using a special adhesive process. It is a floor covering made of two rubber layers. When gluing together, the rubber layers are first sealed with a pore adhesive, whereupon the two sealed rubber layers are glued together. As a result, a large number of procedural steps are necessary. It is cheaper to produce a floor covering in which the number of process steps is reduced.
Es ist bereits eine sandwichartige Struktur aus zwei Schichten bekannt, bei denen beide Schichten, die aus Gummi bestehen, in teigigem bis flüssigem Zustand unter Druck miteinander verbunden werden. Bei dieser Struktur wandern bzw. fließen aber die beiden Schichten ineinander, so daß die Struktur verhältnismäßig dick ausfallen muß, um eine halbwegs definierte Struktur zu bilden. Daher eignet sich diese bekannte Struktur nicht für Fußbodenbeläge, weil sie zu dick ist.A sandwich-like structure consisting of two layers is already known, in which both layers, which consist of rubber, are connected to one another in a pasty to liquid state under pressure. In this structure, however, the two layers migrate or flow into one another, so that the structure must be relatively thick in order to form a reasonably defined structure. Therefore, this known structure is not suitable for floor coverings because it is too thick.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren bzw. eine Struktur mit den Vorteilen der Verfahrensschrittverringerung herzustellen, die dünn genug und doch verschleiß- und trittfest und doch elastisch ist, um beispielsweise einen materialsparenden Fußbodenbelag zu bilden.The object of the present invention is to produce a method or a structure with the advantages of reducing the number of steps, which is thin enough and yet resistant to wear and tread and yet elastic, for example to form a material-saving floor covering.
Diese Aufgabe wird durch ein Verfahren bzw. eine Struktur gelöst, bei dem mindestens eine Schicht aus neuem, hochwertigem Material als dünne plattenartige Beschichtung aus hochwertigem, verschleißfestem Kunststoff hergestellt wird und in dünn- bzw. leicht flüssiger Form und vorbestimmter Menge auf dem Boden einer Plattenform verteilt wird und eine vorgefertigte Matte oder Platte aus geringwertigem Material, insbesondere Recyclingmaterial darauf aufgedrückt wird.This object is achieved by a method or a structure in which at least one layer of new, high-quality material as a thin plate-like Coating is made of high-quality, wear-resistant plastic and is distributed in thin or slightly liquid form and a predetermined amount on the bottom of a plate mold and a prefabricated mat or plate made of low-quality material, in particular recycling material, is pressed onto it.
Durch die Tatsache, daß die Matte oder Platte aus Recyclingmaterial bereits in fester Form vorliegt, wandern die Schichten nicht ineinander, sondern verzahnen sich nur mit ihren Oberflächenunebenheiten und es ist möglich, eine sandwichartige Struktur herzustellen, die als Fußbodenbelag dienen kann. Vorzugsweise kann die Matte oder Platte und die dünne Oberflächenbeschichtung zur Verstärkung der Festigkeit, insbesondere der Reißfestigkeit auch ein Gewebe mit insbesondere netzartiger Struktur, z.B. ein Glasfaser- Rowing-Gewebe, eingebracht werden, durch welches der dünne bzw. leicht flüssige Kunststoff sich mit der vorgefertigten Matte oder Platte verbinden kann.Due to the fact that the mat or plate made of recycled material is already in solid form, the layers do not migrate into one another, but only interlock with their surface irregularities and it is possible to produce a sandwich-like structure that can serve as a floor covering. Preferably, the mat or plate and the thin surface coating can also be a fabric with a particularly net-like structure, e.g. a glass fiber rowing fabric can be introduced, through which the thin or slightly liquid plastic can connect to the prefabricated mat or plate.
Vorzugsweise ist der Boden der Plattenform profiliert, so daß die nach außen weisende Oberfläche der dünnen plattenartigen Beschichtung aus hochwertigem verschleißfestem Kunststoff ebenfalls profiliert ist. Eine solche Profilierung dient der Rutsch- und Trittfestigkeit bei der Verwendung der sandwichartigen Struktur als Fußbodenbelag.The bottom of the plate shape is preferably profiled, so that the outwardly facing surface of the thin plate-like coating made of high-quality, wear-resistant plastic is also profiled. Such profiling is used for slip resistance and tread resistance when using the sandwich-like structure as a floor covering.
Ebenfalls vorzugsweise liegt die nach außen weisende Oberfläche der dünnen Oberflächenbeschichtung aus hochwertigem verschleißfestem Kunststoff als Profilierung in Noppenform vor, die sich für den genannten Zweck als rutsch- und trittfester Bodenbelag als besonders günstig erwiesen hat.The outwardly facing surface of the thin surface coating is also preferably exposed high-quality wear-resistant plastic as profiling in the form of nubs, which has proven to be particularly cheap for the stated purpose as a non-slip and non-slip floor covering.
Fernerhin vorzugsweise besteht der hochwertige verschleißfeste Kunststoff für die plattenartige Beschichtung aus Polyurethan. Dieses Material weist besonders günstige und verschleißfeste Eigenschaften auf. Es hat geringen Trittschall, kann in allen Farben und Härten hergestellt werden und ist UV-beständig.Furthermore, the high-quality, wear-resistant plastic for the plate-like coating preferably consists of polyurethane. This material has particularly favorable and wear-resistant properties. It has low impact sound, can be made in all colors and hardness and is UV-resistant.
Bevorzugt besteht die vorgefertigte Matte oder Platte aus geringwertigem Material aus Recyclinggummi.The prefabricated mat or plate preferably consists of low-quality material made from recycled rubber.
Ebenfalls bevorzugt wird der Recyclinggummi aus verschrotteten Autoreifen gewonnen.The recycling rubber is also preferably obtained from scrapped car tires.
Fernerhin bevorzugt besteht die vorgefertigte Matte oder Platte aus geringwertigem Material aus recyceltem Kabelisolierungsschrott. Recycelter Kabelisolierungsschrott ist besonders günstig zu erhalten, wobei der Recyclingannahme sogar noch Preise bezahlt werden, nur um die Entsorgung sicherzustellen.Furthermore, the prefabricated mat or plate preferably consists of low-quality material made from recycled cable insulation scrap. Recycled cable insulation scrap can be obtained particularly cheaply, with recycling receipts even being paid for just to ensure disposal.
Die vorgefertigte Matte oder Platte kann auch zumindest teilweise aus geringwertigerem Material wie Holz bzw. aus Preßspan bestehen. Auch das Preßspanmaterial kann aus recyceltem Holz gewonnen sein. Die Aufgabe wird aber auch dadurch gelöst, daß eine vorgefertigte dünne Oberflächenbeschichtung zur Bildung einer Sandwichstruktur aus zumindest teilweise neuem, hochwertigem Material in fester Form in den Boden einer Plattenform eingelegt wird und darauf eine Schicht aus flüssigem bis teigigem geringwertigem Material, insbesondere Recyclingmaterial, darauf gleichmäßig aufgetragen wird und beide Materialien unter Druck miteinander verbunden werden, wobei beide Materialien miteinander verbindbare Bindemittel aufweisen.The prefabricated mat or plate can also consist at least partially of lower quality material such as wood or pressboard. The pressboard material can also be made from recycled wood. The object is also achieved in that a prefabricated thin surface coating for forming a sandwich structure from at least partially new, high-quality material in solid form is placed in the bottom of a plate mold and then a layer of liquid to pasty low-quality material, in particular recycling material, evenly thereon is applied and the two materials are joined together under pressure, the two materials having binders which can be bonded to one another.
Bei dieser Ausfuhrungsform liegt ebenfalls eine der beiden Schichte in fester From vor, so daß die beiden Materialien nicht ineinander wandern können. Durch das Bindemittel wird eine besonders innige Bindungswirkung zwischen beiden Schichten erreicht.In this embodiment, one of the two layers is also in a fixed form, so that the two materials cannot migrate into one another. The binder achieves a particularly intimate binding effect between the two layers.
Vorzugsweise besteht die vorgefertigte dünne Oberflächenbeschichtung aus neuem farbigem, UV- beständigem verschleißfestem Gummi. Der neue Gummi kann in jeder Farbe hergestellt werden.The prefabricated thin surface coating preferably consists of new colored, UV-resistant, wear-resistant rubber. The new rubber can be made in any color.
Ebenfalls vorzugsweise besteht die vorgefertigte dünne Oberflächenbeschichtung aus einer Mischung aus z.B. farbigem neuem UV-beständigem verschleißfestem Gummi und Recyclinggummi. Dadurch, daß bei der hochwertigen Oberflächenbeschichtung eine Mischung aus neuem Gummi und Recyclinggummi vorliegt, wird der Preis der sandwichartigen Struktur weiterhin gesenkt und die Umweltvorteile werden verbessert. Fernerhin vorzugsweise wird der Recyclinggummianteil aus verschrotteten Autoreifen gewonnen.The prefabricated thin surface coating likewise preferably consists of a mixture of, for example, colored new UV-resistant wear-resistant rubber and recycled rubber. Because the high-quality surface coating contains a mixture of new rubber and recycled rubber, the price of the sandwich-like structure is further reduced and the environmental advantages are improved. Furthermore, the recycled rubber portion is preferably obtained from scrapped car tires.
Bevorzugt wird die vorgefertigte dünne Oberflächenbeschichtung aus einem Block abgespalten. Durch diese Abspaltung von einem Block kann die vorgefertigte dünne Oberflächenbeschichtung beliebig dünn gemacht werden.The prefabricated thin surface coating is preferably split off from a block. By splitting off a block, the prefabricated thin surface coating can be made as thin as desired.
Vorzugsweise wird die vorgefertigte dünne Oberflächenbeschichtung 2mm dick hergestellt.The prefabricated thin surface coating is preferably produced 2 mm thick.
Ebenfalls vorzugsweise wird die vorgefertigte dünne Oberflächenbeschichtung 0,5mm dick hergestellt.The prefabricated thin surface coating is also preferably produced 0.5 mm thick.
Fernerhin vorzugsweise wird die Schicht aus flüssigem bis teigigem geringwertigem Material aus Recyclinggummi hergestellt .Furthermore, the layer is preferably made from liquid to pasty, low-quality material made from recycled rubber.
Bevorzugt wird der Recyclinggummi aus verschrotteten Autoreifen gewonnen.The recycling rubber is preferably obtained from scrapped car tires.
Ebenfalls bevorzugt enthält die vorgefertigte dünne Oberflächenbeschichtung und die Schicht aus flüssigem bis teigigem, geringwertigem Material jeweils 6% Bindemittel .Also preferably, the prefabricated thin surface coating and the layer of liquid to pasty, low-quality material each contain 6% binder.
Die Erfindung wird im folgenden für zwei besonders bevorzugte Ausführungsbeispiele genauer beschrieben.The invention is described in more detail below for two particularly preferred exemplary embodiments.
Im ersten Ausführungsbeispiel ist die Schicht aus hochwertigem Material eine dünne plattenartige Beschichtung aus Polyurethan. Diese Schicht wird in dünn- bzw. leicht flüssiger Form und vorbestimmter Menge auf dem Boden einer Plattenform verteilt. Die Plattenform enthält im Negativ noppenartige Strukturen, so daß die dünne plattenartige Beschichtung nach dem Erhärten ebenfalls Noppen aufweist. Diese Noppen sind besonders günstig für die Trittfestigkeit der Fußbodenbeläge. Das Polyurethan ist besonders hochwertig und verschleißfest und eignet sich vorzüglich für die Oberflächenschicht von Fußbodenbelägen. Die vorgefertigte Matte aus geringwertigem Material besteht aus Recyclinggummi, der aus verschrotteten Autoreifen gewonnen wird. Dabei werden die verschrotteten Autoreifen zu Granulat oder Gummimehl verarbeitet, welches erhitzt wird, so daß eine einheitliche Matte entsteht, die nach dem Erhitzen wieder abgekühlt wird. Diese Matte aus geringwertigem Material wird auf die dünn- bzw. leicht flüssige Schicht aus Polyurethan aufgedrückt. Das Polyurethan verbindet sich vorzüglich mit dem Recyclinggummi, so daß die sandwichartige Struktur nach dem Erhärten des Polyurethans fertig ist.In the first embodiment, the layer of high quality material is a thin plate-like Polyurethane coating. This layer is distributed in thin or slightly liquid form and a predetermined amount on the bottom of a plate mold. The plate shape contains nub-like structures in the negative, so that the thin plate-like coating also has nubs after hardening. These knobs are particularly favorable for the tread resistance of the floor coverings. The polyurethane is particularly high quality and wear-resistant and is particularly suitable for the surface layer of floor coverings. The prefabricated mat made of low-quality material consists of recycled rubber, which is obtained from scrapped car tires. The scrapped car tires are processed into granules or rubber powder, which is heated so that a uniform mat is created, which is cooled again after heating. This mat made of low-quality material is pressed onto the thin or slightly liquid layer of polyurethane. The polyurethane combines excellently with the recycling rubber, so that the sandwich-like structure is finished after the polyurethane has hardened.
Beim zweiten Ausführungsbeispiel wird eine dünne Oberflächenbeschichtung aus einer Mischung aus neuem hochwertigem, UV-beständigem, verschleißfestem, farbigem Gummi hergestellt. Dabei wird diese Gummimischung in Blockform hergestellt, aus der die Oberflächenbeschichtung durch ein Spaltmesser abgespalten wird. Die vorgefertigte dünne Oberflächenbeschichtung wird in den Boden einer Plattform eingelegt und darauf wird eine Schicht aus flüssigem bis teigigem Recyclinggummi aufgetragen. Schließlich werden beide Materialien unter Druck miteinander verbunden, wobei beide Materialien miteinander verbindbare Bindemittel aufweisen. Die Oberflächenbeschichtung ist bevorzugt 0,5mm bis 2mm dick, was einen geringen Anteil an der Sandwichstruktur darstellt, so daß ein eindeutiger Preis- und Umweltvorteil gesichert ist. Die Schicht aus flüssigem bis teigigem geringwertigem Material, die aus Recyclinggummi ist, wird aus Granulat oder Mehl von verschrotteten Autoreifen gewonnen. Dieses Granulat bzw. Mehl wird erhitzt, bis das Material flüssig bis teigig ist. Es wird auf der Oberflächenbeschichtung gleichmäßig aufgetragen, wobei beide Materialien unter Druck miteinander verbunden werden. Das Bindemittel, das in beiden Materialien vorhanden ist, sorgt für eine ausgezeichnete Verbindung der beiden Materialien. In the second exemplary embodiment, a thin surface coating is produced from a mixture of new, high-quality, UV-resistant, wear-resistant, colored rubber. This rubber compound is produced in block form, from which the surface coating is split off by a splitting knife. The prefabricated thin surface coating is placed in the bottom of a platform and a layer of liquid is placed on it to pasty recycled rubber applied. Finally, both materials are bonded together under pressure, both materials having binders that can be bonded to one another. The surface coating is preferably 0.5 mm to 2 mm thick, which represents a small proportion of the sandwich structure, so that a clear price and environmental advantage is ensured. The layer of liquid to pasty low-quality material, which is made of recycled rubber, is obtained from granulate or flour from scrapped car tires. This granulate or flour is heated until the material is liquid to pasty. It is applied evenly to the surface coating, whereby both materials are bonded together under pressure. The binder, which is present in both materials, ensures an excellent bond between the two materials.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Sandwichartige Struktur mit genau zwei Schichten, von welchen eine erste Schicht aus zumindest teilweise neuem hochwertigem Material besteht und eine zweite Schicht aus geringwertigem Material, insbesondere Recyclingmaterial, dadurch gekennzeichnet, daß die erste Schicht aus neuem hochwertigem Material eine dünne plattenartige Beschichtung aus hochwertigem verschleißfestem Kunststoff und die zweite Schicht aus geringwertigem Material eine Platte oder Matte aus insbesondere Recyclingmaterial ist, wobei die sandwichartige Struktur dadurch zusammengefügt ist, daß die dünne plattenartige Beschichtung aus hochwertigem verschleißfestem Kunststoff in dünn- bzw. leicht flüssiger Form und vorbestimmter Menge auf dem Boden einer Plattenform verteilt wird und die Matte oder Platte aus insbesondere Recyclingmaterial vorgefertigt darauf aufgedrückt wird.1. Sandwich-like structure with exactly two layers, of which a first layer consists of at least partially new high-quality material and a second layer of low-quality material, in particular recycling material, characterized in that the first layer of new high-quality material is a thin plate-like coating made of high-quality wear-resistant Plastic and the second layer of low-quality material is a plate or mat made in particular of recycling material, the sandwich-like structure being joined together in that the thin plate-like coating made of high-quality wear-resistant plastic in thin or slightly liquid form and a predetermined amount on the bottom of a plate form is distributed and the mat or plate made of recycled material in particular is pressed onto it.
2. Sandwichartige Struktur nach Anspruch 1, dadurch gekennzeichnet, daß in die dünne Oberflächenbeschichtung aus hochwertigem und verschleißfestem Kunststoff zur Verstärkung der Festigkeit, insbesondere der Reißfestigkeit, und zur besseren Verzahnung der beiden Schichten ein Gewebe mit insbesondere netzartiger Struktur, z.B. ein Glasfaser-Rowing-Gewebe, eingeschmolzen ist.2. Sandwich-like structure according to claim 1, characterized in that in the thin surface coating made of high quality and wear-resistant plastic to strengthen the strength, in particular the tensile strength, and for better interlocking of the two layers, a fabric with a particularly net-like structure, e.g. a glass fiber rowing fabric that is melted down.
3. Sandwichartige Strukturen nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die nach außen weisende Oberfläche der dünnen Oberflächenbeschichtung aus hochwertigem verschleißfestem Kunststoff profiliert ist .3. Sandwich-like structures according to claim 1 or 2, characterized in that the outwardly facing Surface of the thin surface coating is profiled from high-quality wear-resistant plastic.
4. Sandwichartige Strukturen nach Anspruch 3, gekennzeichnet durch eine Profilierung in Noppenform.4. Sandwich-like structures according to claim 3, characterized by profiling in knob shape.
5. Sandwichartige Strukturen nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der hochwertige verschleißfeste Kunststoff aus Polyurethan besteht .5. Sandwich-like structures according to one of claims 1 to 4, characterized in that the high-quality wear-resistant plastic consists of polyurethane.
6. Sandwichartige Strukturen nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die vorgefertigte Matte oder Platte aus geringwertigem Material aus Recyclinggummi besteht.6. Sandwich-like structures according to one of claims 1 to 5, characterized in that the prefabricated mat or plate consists of low-quality material made of recycled rubber.
7. Sandwichartige Strukturen nach Anspruch 6, dadurch gekennzeichnet, daß der Recyclinggummi aus verschrotteten Autoreifen gewonnen wird.7. Sandwich-like structures according to claim 6, characterized in that the recycling rubber is obtained from scrapped car tires.
8. Sandwichartige Strukturen nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die vorgefertigte Matte oder Platte aus geringwertigem Material aus recyceltem Kabelisolierungsschrott besteht .8. Sandwich-like structures according to one of claims 1 to 5, characterized in that the prefabricated mat or plate consists of low-quality material from recycled cable insulation scrap.
9. Sandwichartige Strukturen nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die vorgefertigte Matte oder Platte aus geringwertigem Material aus Holz besteht. 9. Sandwich-like structures according to one of claims 1 to 5, characterized in that the prefabricated mat or plate consists of low-quality material made of wood.
10. Sandwichartige Strukturen nach Anspruch 9, dadurch gekennzeichnet, daß die Holzplatte aus Preßspan besteht .10. Sandwich-like structures according to claim 9, characterized in that the wooden plate consists of pressboard.
11. Sandwichartige Struktur nach Anspruch 10, dadurch gekennzeichnet, daß der Preßspan aus recycelten Holzabfällen gewonnen ist.11. Sandwich-like structure according to claim 10, characterized in that the pressboard is obtained from recycled wood waste.
12. Sandwichartige Struktur mit genau zwei Schichten, von welchen eine erste Schicht aus zumindest teilweise neuem hochwertigem Material besteht und eine zweite Schicht aus geringwertigem Material, insbesondere Recyclingmaterial, dadurch gekennzeichnet, daß die erste Schicht eine dünne Oberflächenbeschichtung ist , wobei die sandwichartige Struktur dadurch zusammengefügt ist, daß die dünne Oberflächenbeschichtung in vorgefertigter fester Form in den Boden einer Plattenform eingelegt wird und darauf eine zweite Schicht aus flüssigem bis teigigem geringwertigem Material, insbesondere Recyclingmaterial, gleichmäßig aufgetragen, und beide Materialien unter Druck miteinander verbunden werden, wobei beide Materialien miteinander verbindbare Bindemittel aufweisen.12. Sandwich-like structure with exactly two layers, of which a first layer consists of at least partially new, high-quality material and a second layer of low-quality material, in particular recycling material, characterized in that the first layer is a thin surface coating, the sandwich-like structure being thereby joined together is that the thin surface coating is placed in a prefabricated solid form in the bottom of a plate mold and a second layer of liquid to pasty low-quality material, in particular recycled material, evenly applied, and both materials are bonded together under pressure, both materials being binders that can be bonded to one another exhibit.
13. Sandwichartige Struktur nach Anspruch 12, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung aus neuem farbigem, UV- beständigem, verschleißfestem Gummi besteht. 13. Sandwich-like structure according to claim 12, characterized in that the prefabricated thin surface coating consists of new colored, UV-resistant, wear-resistant rubber.
14. Sandwichartige Struktur nach Anspruch 12, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung aus einer Mischung aus neuem farbigem, UV-beständigem, verschleißfestem Gummi und Recyclinggummi besteht.14. Sandwich-like structure according to claim 12, characterized in that the prefabricated thin surface coating consists of a mixture of new colored, UV-resistant, wear-resistant rubber and recycled rubber.
15. Sandwichartige Struktur nach Anspruch 14, dadurch gekennzeichnet, daß der Recyclinggummi-Anteil aus verschrotteten Autoreifen gewonnen ist.15. Sandwich-like structure according to claim 14, characterized in that the recycled rubber portion is obtained from scrapped car tires.
16. Sandwichartige Struktur nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung aus einem Block abgespalten ist.16. Sandwich-like structure according to one of claims 12 to 15, characterized in that the prefabricated thin surface coating is split off from a block.
17. Sandwichartige Struktur nach einem der Ansprüche 12 bis 16, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung 2 Millimeter dick ist.17. Sandwich-like structure according to one of claims 12 to 16, characterized in that the prefabricated thin surface coating is 2 millimeters thick.
18. Sandwichartige Struktur nach einem der Ansprüche 12 bis 16, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung 0,5 Millimeter dick ist.18. Sandwich-like structure according to one of claims 12 to 16, characterized in that the prefabricated thin surface coating is 0.5 millimeters thick.
19. Sandwichartige Struktur nach einem der Ansprüche 12 bis 18, dadurch gekennzeichnet, daß die zweite Schicht aus geringwertigem Material aus Recyclinggummi besteht. 19. Sandwich-like structure according to one of claims 12 to 18, characterized in that the second layer consists of low-quality material made of recycled rubber.
20. Sandwichartige Struktur nach Anspruch 19, dadurch gekennzeichnet, daß der Recyclinggummi aus verschrotteten Autoreifen gewonnen ist.20. Sandwich-like structure according to claim 19, characterized in that the recycling rubber is obtained from scrapped car tires.
21. Sandwichartige Struktur nach einem der Ansprüche 12 bis 20, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung und die zweite Schicht aus geringwertigem Material jeweils 6% Bindemittel enthalten.21. Sandwich-like structure according to one of claims 12 to 20, characterized in that the prefabricated thin surface coating and the second layer of low-quality material each contain 6% binder.
22. Verfahren zur Herstellung einer sandwichartigen Struktur nach einem der Ansprüche 1 bis 21 mit mindestens zwei Schichten, von welchen mindestens eine aus zumindest teilweise neuem hochwertigem Material besteht und mindestens eine aus geringwertigem Material, insbesondere Recyclingmaterial, wobei mindestens eine Schicht in teigigem bis flüssigem Zustand unter Druck mit einer weiteren Schicht verbunden wird, dadurch gekennzeichnet, daß die mindestens eine Schicht aus neuem, hochwertigem Material als dünne plattenartige Beschichtung aus hochwertigem verschleißfestem Kunststoff hergestellt wird und in dünn- bzw. leicht flüssiger Form und vorbestimmter Menge auf dem Boden einer Plattenform verteilt wird und eine vorgefertigte Platte oder Matte aus geringwertigem Material, insbesondere Recyclingmaterial, darauf aufgedrückt wird.22. A method for producing a sandwich-like structure according to any one of claims 1 to 21 with at least two layers, at least one of which consists of at least partially new, high-quality material and at least one of low-quality material, in particular recycling material, at least one layer in a pasty to liquid state is connected under pressure to a further layer, characterized in that the at least one layer of new, high-quality material is produced as a thin, plate-like coating of high-quality, wear-resistant plastic and is distributed in thin or slightly liquid form and a predetermined amount on the bottom of a plate form is and a prefabricated plate or mat made of low-quality material, in particular recycled material, is pressed onto it.
23. Verfahren nach Anspruch 22, dadurch gekennzeichnet, daß zwischen die Matte oder Platte und die dünne Oberflächenbeschichtung zur Verstärkung der Festigkeit, insbesondere der Reißfestigkeit ein Gewebe mit insbesondere netzartiger Struktur, z.B. ein Glasfaser-Rowing-Gewebe eingebracht wird, durch welches hindurch der dünne bzw. leichtflüssige Kunststoff sich mit der vorgefertigten Matte oder Platte verbinden kann.23. The method according to claim 22, characterized in that between the mat or plate and the thin surface coating to reinforce the Strength, in particular tensile strength, a fabric with a net-like structure, for example a glass fiber rowing fabric, is introduced, through which the thin or light-bodied plastic can bond to the prefabricated mat or plate.
24. Verfahren nach einem der Ansprüche 22 oder 23, dadurch gekennzeichnet, daß der Boden der Plattenform profiliert ist, so daß die nach außen weisende Oberfläche der dünne Platte aus hochwertigem, verschleißfestem Kunststoff ebenfalls profiliert hergestellt wird.24. The method according to any one of claims 22 or 23, characterized in that the bottom of the plate shape is profiled, so that the outwardly facing surface of the thin plate made of high quality, wear-resistant plastic is also made profiled.
25. Verfahren nach Anspruch 24 , gekennzeichnet durch eine Profilierung in Noppenform.25. The method according to claim 24, characterized by profiling in knob shape.
26. Verfahren nach einem der Ansprüche 22 bis 25, dadurch gekennzeichnet, daß der hochwertige, verschleißfeste Kunststoff aus Polyurethan besteht.26. The method according to any one of claims 22 to 25, characterized in that the high-quality, wear-resistant plastic consists of polyurethane.
27. Verfahren nach einem der Ansprüche 22 bis 26, dadurch gekennzeichnet, daß die vorgefertigte Matte oder Platte aus geringwertigem Material aus Recyclinggummi besteht.27. The method according to any one of claims 22 to 26, characterized in that the prefabricated mat or plate consists of low-quality material made of recycled rubber.
28. Verfahren nach Anspruch 27, dadurch gekennzeichnet, daß der Recyclinggummi aus verschrotteten Autoreifen gewonnen wird. 28. The method according to claim 27, characterized in that the recycling rubber is obtained from scrapped car tires.
29. Verfahren nach einem der Ansprüche 22 bis 26, dadurch gekennzeichnet, daß die vorgefertigte Matte oder Platte aus geringwertigem Material aus recyceltem Kabelisolierungsschrott besteht.29. The method according to any one of claims 22 to 26, characterized in that the prefabricated mat or plate consists of low-quality material made from recycled cable insulation scrap.
30. Verfahren nach einem der Ansprüche 22 bis 26, dadurch gekennzeichnet, daß die vorgefertigte Matte oder Platte aus geringwertigem Material aus Holz besteht .30. The method according to any one of claims 22 to 26, characterized in that the prefabricated mat or plate consists of low-quality material made of wood.
31. Verfahren nach Anspruch 30, dadurch gekennzeichnet, daß die Holzplatte aus Preßspan besteht .31. The method according to claim 30, characterized in that the wooden plate consists of pressboard.
32. Verfahren nach Anspruch 31, dadurch gekennzeichnet, daß der Preßspan aus recycelten Holzabfällen gewonnen wird.32. The method according to claim 31, characterized in that the pressboard is obtained from recycled wood waste.
33. Verfahren zur Herstellung einer sandwichartigen Struktur mit mindestens zwei Schichten, von welchen mindestens eine aus zumindest teilweise neuem hochwertigem Material besteht und mindestens eine aus geringwertigem Material, insbesondere Recyclingmaterial, wobei mindestens eine Schicht in teigigem bis flüssigem Zustand unter Druck mit einer weiteren Schicht verbunden wird, dadurch gekennzeichnet, daß eine vorgefertigte dünne Oberflächenbeschichtung aus neuem, hochwertigem Material in fester Form in den Boden einer Plattenform eingelegt wird und daraus eine Schicht aus flüssigem bis teigigem geringwertigem Material, insbesondere Recyclingmaterial, darauf gleichmäßig aufgetragen und beide Materialien unter Druck miteinander verbunden werden, wobei beide Materialien miteinander verbindbare Bindemittel aufweisen.33. Method for producing a sandwich-like structure with at least two layers, at least one of which consists of at least partially new, high-quality material and at least one of low-quality material, in particular recycling material, wherein at least one layer in the pasty to liquid state is connected to a further layer under pressure is characterized in that a prefabricated thin surface coating of new, high-quality material in solid form is placed in the bottom of a plate mold and a layer of liquid to pasty low-quality material, in particular recycling material, on it evenly applied and the two materials are joined together under pressure, the two materials having binders which can be bonded to one another.
34. Verfahren nach Anspruch 33, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung aus neuem farbigem, UV- beständigem, verschleißfestem Gummi hergestellt wird.34. The method according to claim 33, characterized in that the prefabricated thin surface coating is made of new colored, UV-resistant, wear-resistant rubber.
35. Verfahren nach Anspruch 33, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung aus einer Mischung aus neuem farbigem UV-beständigem, verschleißfestem Gummi und Recyclinggummi hergestellt wird.35. The method according to claim 33, characterized in that the prefabricated thin surface coating is made from a mixture of new colored UV-resistant, wear-resistant rubber and recycled rubber.
36. Verfahren nach Anspruch 35, dadurch gekennzeichnet, daß der Recyclinggummianteil aus verschrotteten Autoreifen gewonnen wird.36. The method according to claim 35, characterized in that the recycling rubber part is obtained from scrapped car tires.
37. Verfahren nach einem der Ansprüche 33 bis 36, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung von einem Block abgespalten wird.37. The method according to any one of claims 33 to 36, characterized in that the prefabricated thin surface coating is split off from a block.
38. Verfahren nach einem der Ansprüche 33 bis 37, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung 2mm dick hergestellt wird. 38. The method according to any one of claims 33 to 37, characterized in that the prefabricated thin surface coating is made 2mm thick.
39. Verfahren nach einem der Ansprüche 33 bis 37, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung 0,5mm dick hergestellt wird.39. The method according to any one of claims 33 to 37, characterized in that the prefabricated thin surface coating is made 0.5mm thick.
40. Verfahren nach einem der Ansprüche 33 bis 39, dadurch gekennzeichnet, daß die Schicht aus teigigem bis flüssigem geringwertigem Material aus Recyclinggummi hergestellt wird.40. The method according to any one of claims 33 to 39, characterized in that the layer of doughy to liquid low-quality material is made from recycled rubber.
41. Verfahren nach Anspruch 40, dadurch gekennzeichnet, daß der Recyclinggummi aus verschrotteten Autoreifen gewonnen wird.41. The method according to claim 40, characterized in that the recycling rubber is obtained from scrapped car tires.
42. Verfahren nach einem der Ansprüche 33 bis 41, dadurch gekennzeichnet, daß die vorgefertigte dünne Oberflächenbeschichtung und die Schicht aus flüssigem bis teigigem geringwertigem Material jeweils 6% Bindemittel enthalten. 42. The method according to any one of claims 33 to 41, characterized in that the prefabricated thin surface coating and the layer of liquid to pasty low-quality material each contain 6% binder.
PCT/EP1998/005674 1997-11-26 1998-09-07 Method for producing a sandwich-type structure WO1999028375A1 (en)

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DE19881826T DE19881826D2 (en) 1997-11-26 1998-09-07 Method of making a sandwich structure
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DE1997152399 DE19752399A1 (en) 1997-11-26 1997-11-26 Sandwich floor covering material
DE29800823.8 1998-01-19
DE29800823U DE29800823U1 (en) 1997-11-26 1998-01-19 Sandwich-like structure

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