DE4124355A1 - Resin-impregnated paper recycling - uses shredding for mixt. with shredded wood or fibres for thermal compression into plates etc. - Google Patents
Resin-impregnated paper recycling - uses shredding for mixt. with shredded wood or fibres for thermal compression into plates etc.Info
- Publication number
- DE4124355A1 DE4124355A1 DE19914124355 DE4124355A DE4124355A1 DE 4124355 A1 DE4124355 A1 DE 4124355A1 DE 19914124355 DE19914124355 DE 19914124355 DE 4124355 A DE4124355 A DE 4124355A DE 4124355 A1 DE4124355 A1 DE 4124355A1
- Authority
- DE
- Germany
- Prior art keywords
- paper
- shredded
- waste
- residues
- wood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/007—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and at least partly composed of recycled material
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Wiederverwerten von Schnittabfällen oder Resten aus Papier, welches mit nicht völlig auskondensierten, vorzugs weise lediglich ankondensierten Duroplasten, insbesondere Melamin-, Phenol- oder Harnstoff-Harzen getränkt ist. Die Erfindung betrifft des weiteren ein Ver fahren zum Wiederverwenden von Abfällen, Resten oder Recyclaten aus ther moplastischen Polymeren.The invention relates to a method for recycling cut waste or residues of paper, which is not fully condensed, preferably as only condensed thermosets, especially melamine, phenol or Is soaked in urea resins. The invention further relates to a Ver drive to reuse waste, residues or recyclates from ther plastic polymers.
Bei der Beschichtung von Holzwerkstoffen wird in vielen Fällen so vorgegan gen, daß zunächst eine Papierbahn mit dem Duroplast-Vorprodukt getränkt und diese auf die Oberfläche einer Spanplatte kaschiert wird. Infolge der dabei eintretenden Erwärmung kondensiert das Duroplast-Vorprodukt völlig aus und wird dabei unter inniger Verbindung mit der Plattenoberfläche fest, insbeson dere unschmelzbar und in den meisten Lösungsmitteln unlöslich.This is how it is done in many cases when coating wooden materials gene that first a paper web soaked with the thermoset intermediate and this is laminated onto the surface of a chipboard. As a result of this When the heating occurs, the thermoset intermediate product completely condenses out becomes firm under intimate connection with the plate surface, in particular their infusible and insoluble in most solvents.
Bei der Herstellung von mit Duroplast-Vorprodukten getränkten Papierbahnen in kundenspezifischen Abmessungen und bei der Produktion beschichteter Platten fallen Schnittabfälle oder Reste des erwähnten imprägnierten Papieres an, deren Beseitigung problematisch ist. In der Vergangenheit wurden diese Abfälle in der Regel verbrannt oder auf Deponien gelagert. Beide Entsor gungsmethoden sind problematisch, da die mit Kunststoff getränkten Papiere nur äußerst schwer verrottbar sind und da bei ihrer Verbrennung neben Kohlensäure und Wasser auch Stickoxide in erheblichen Mengen entstehen.In the production of paper webs impregnated with thermoset intermediate products in customer-specific dimensions and coated during production Boards fall off scrap or remnants of the aforementioned impregnated paper whose elimination is problematic. In the past, these were Waste is usually incinerated or landfilled. Both disposal methods are problematic because the paper soaked with plastic are extremely difficult to rot and because of their incineration alongside Carbon dioxide and water also generate nitrogen oxides in significant quantities.
Der Erfindung liegt die Aufgabe zugrunde, derartige Papierabfälle, welche mit nicht völlig auskondensierten, vorzugsweise lediglich ankondensierten Duro plasten, insbesondere mit Melamin-, Phenol- oder Harnstoff-Harzen getränkt sind, sinnvoll wieder zu verwenden. Da eine vergleichbare Problematik auch bei der Beseitigung von Abfällen, Resten oder Recyclaten aus thermoplastischen Polymeren vorliegt, liegt der Erfindung des weiteren die Aufgabe zugrunde, auch diese Abfälle in wirtschaftlich und ökologisch akzeptabler Weise wieder zu verwenden. The invention is based, such waste paper with not fully condensed, preferably only condensed Duro plastic, especially impregnated with melamine, phenol or urea resins are sensible to reuse. Since a comparable problem also with the disposal of waste, residues or recyclates from thermoplastic Polymers is present, the invention is further based on the object this waste in an economically and ecologically acceptable manner use.
Zur Lösung dieser Aufgaben wird vorgeschlagen, daß die Schnittabfälle oder Reste zerkleinert, gegebenenfalls mit ebenfalls zerkleinertem Papier oder zer kleinerten Holzabfällen oder anderen zerkleinerten Faserstoffen vermischt und sodann unter Anwendung von erhöhtem Druck und erhöhter Temperatur zu Formkörpern, Platten oder Profilen verpreßt werden. Wird von Schnittabfällen aus Papier ausgegangen, welche mit Duroplastvorprodukten getränkt sind, so liegt infolge des relativ hohen Harzanteiles ein Produkt vor, welches ohne wei teres, gegebenenfalls auch nach Vermischung mit den genannten Streckmitteln unter Anwendung von Druck und Wärme zu beliebigen Formkörpern verarbeitet werden kann. Die hier vorgeschlagene Vorzerkleinerung führt dazu, daß ein Ausgangsmaterial entsteht, welches in Formpressen oder Plattenpressen ver arbeitbar ist. Infolge des hohen Harzgehaltes entstehen dabei Formkörper oder Platten mit einer Querzugfestigkeit von etwa 0,5 bis 1,5 N/mm2 und einer Bie gefestigkeit von 50 bis 60 N/mm2. Die Formkörper bzw. Platten weisen eine relativ hohe Dichte von 1,2 bis 1,5 kg/dm3 auf.To solve these problems, it is proposed that the cut waste or remnants be shredded, optionally mixed with shredded paper or shredded wood waste or other shredded fibrous materials, and then pressed into shaped articles, plates or profiles using increased pressure and elevated temperature. Is assumed from paper waste, which are impregnated with thermoset precursors, there is a product due to the relatively high resin content, which can be processed without any further, if necessary also after mixing with the extenders mentioned, using pressure and heat to form any shaped articles. The pre-shredding proposed here leads to the creation of a starting material which can be processed in compression molding or plate presses. As a result of the high resin content, moldings or plates with a transverse tensile strength of approximately 0.5 to 1.5 N / mm 2 and a flexural strength of 50 to 60 N / mm 2 are produced . The moldings or plates have a relatively high density of 1.2 to 1.5 kg / dm 3 .
Sollen die Formkörper für Zwecke verwendet werden, bei denen es auf eine derart hohe Dichte und derart hohe Festigkeitseigenschaften nicht ankommt, so ist es möglich, Streckungsmittel in Form von ebenfalls zerkleinertem Papier, vorzugsweise Altpapier, oder von zerkleinerten Holzabfällen oder anderen Fa serstoffen wie Alt-Textilien oder Rindenabfällen zuzusetzen. Als besonders vorteilhaft hat es sich erwiesen, wenn die erwähnten Streckungsmittel etwa auf die gleichen Abmessungen zerkleinert werden wie das Hauptmaterial.Should the molded body be used for purposes where it is on a such high density and such high strength properties do not matter, so it is possible to use extenders in the form of shredded paper, preferably waste paper, or from shredded wood waste or other company add substances such as old textiles or bark waste. As special It has proven to be advantageous if the extension agents mentioned are about the same dimensions are crushed as the main material.
In der gleichen Weise kann vorgegangen werden, wenn nicht Schnittabfälle aus Papier, welches mit nicht völlig auskondensierten Duroplasten (also Duroplast-Vor harzen) imprägniert ist, sondern wenn Abfälle, Reste oder Recyclate aus thermoplastischen Polymeren, vorzugsweise Polyethylen oder Polypropylen wiederverwendet oder weiterverwendet werden soll. Auch in diesem Falle wird vorgeschlagen, das Ausgangsmaterial zunächst zu zerkleinern und sodann mit ebenfalls zerkleinertem Papier, zerkleinertem Holz, vorzugsweise Holzabfällen oder anderen zerkleinerten Faserstoffen, zu vermischen und die Mischung unter Anwendung von erhöhtem Druck und erhöhter Temperatur zu Formkörpern wie Platten oder Profilen zu verpressen. Die Preßtemperatur be trägt dabei je nach der Natur des wieder- bzw. weiterzuverwendenden Duro- oder Thermoplastes 120 bis 180°C; die Preßzeit beträgt je nach den Abmes sungen des herzustellenden Formkörpers bzw. der herzustellenden Platte 5 bis 10 Minuten. Es entstehen hochfeste und dennoch hinreichend elastische Pro dukte, die in der Möbelindustrie, in der Bauindustrie, aber auch zur Herstellung von Gehäusen verschiedenster Art Anwendung finden. Ein besonderer Vorzug des vorgeschlagenen Verfahrens besteht darin, daß das Verfahren unter sparsamem Einsatz von Energie durchgeführt werden kann und selbst keinerlei nicht weiterzuverwertende Reste hinterläßt.The same procedure can be followed, if not cut waste Paper which is not fully condensed with thermosets (i.e. thermoset pre resins) is impregnated, but if waste, residues or recyclates thermoplastic polymers, preferably polyethylene or polypropylene to be reused or reused. In this case too proposed to first shred the starting material and then with also shredded paper, shredded wood, preferably wood waste or other shredded fibers, to mix and blend using increased pressure and temperature Molded bodies such as plates or profiles. The press temperature be depending on the nature of the reusable or reusable Duro or Thermoplastics 120 to 180 ° C; the pressing time depends on the dimensions solutions of the molded body or the plate to be produced 5 to 10 mins. The result is high-strength yet sufficiently elastic pro Products used in the furniture industry, in the construction industry, but also for manufacturing of various types of housings. A special advantage of the proposed procedure is that the procedure under economical use of energy can be carried out and none at all residues that cannot be further used.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914124355 DE4124355A1 (en) | 1991-07-23 | 1991-07-23 | Resin-impregnated paper recycling - uses shredding for mixt. with shredded wood or fibres for thermal compression into plates etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914124355 DE4124355A1 (en) | 1991-07-23 | 1991-07-23 | Resin-impregnated paper recycling - uses shredding for mixt. with shredded wood or fibres for thermal compression into plates etc. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4124355A1 true DE4124355A1 (en) | 1993-01-28 |
Family
ID=6436802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19914124355 Withdrawn DE4124355A1 (en) | 1991-07-23 | 1991-07-23 | Resin-impregnated paper recycling - uses shredding for mixt. with shredded wood or fibres for thermal compression into plates etc. |
Country Status (1)
Country | Link |
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DE (1) | DE4124355A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4231097A1 (en) * | 1992-09-17 | 1994-03-24 | Evd Gmbh | Process for producing a composite particle body and the body produced according to this |
WO2008077793A1 (en) * | 2006-12-22 | 2008-07-03 | Fritz Egger Gmbh & Co. | Fiberboard and process for production thereof |
US7521117B2 (en) | 2005-05-13 | 2009-04-21 | Coveright Surfaces Holding Gmbh | Resin composition comprising waste of resin impregnated material |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2109671A1 (en) * | 1970-03-02 | 1971-09-16 | Lundquist H | Method and device for utilizing waste generated in the manufacture or processing of plastic-coated paper |
DE2629278A1 (en) * | 1975-07-03 | 1977-01-27 | Nodet Gougis Montereau | PROCESS AND DEVICE FOR REGULATING Litter SUPPLY ON COMPRESSED AIR-OPERATED SPREAD DISTRIBUTION AND DOSING MACHINES, IN PARTICULAR SAE MACHINES |
JPS55152042A (en) * | 1979-05-15 | 1980-11-27 | Tokiwa Kemikon Kk | Production of interior core material for automobile using used paper as raw material |
DE3246755A1 (en) * | 1982-12-17 | 1984-06-20 | Richard 4937 Lage Pott | METHOD FOR PRODUCING A MOLDED BODY FROM COMPOSITE MATERIAL AND MOLDED BODY PRODUCED BY THIS METHOD |
DE3501139A1 (en) * | 1985-01-15 | 1986-07-17 | Horst 2053 Grabau Schröder | Moulding from plastics wastes and process for the production thereof |
DE3716759A1 (en) * | 1986-05-19 | 1987-11-26 | Enso Gutzeit Oy | METHOD FOR PRODUCING PANELS |
DE3725965A1 (en) * | 1987-08-05 | 1989-02-16 | Signode System Gmbh | METHOD FOR PRODUCING MOLDED BODIES FROM PAPER AND A THERMOPLASTIC PLASTIC |
DE3822759A1 (en) * | 1988-07-05 | 1990-01-18 | Baehre & Greten | Process for treating paper and/or cutting and/or planing chippings or shavings and/or wood fibres or the like and for producing mouldings, in particular boards, from a mixture of gypsum and fibrous material |
DE3904244A1 (en) * | 1989-02-13 | 1990-08-16 | Wilfried Schraufstetter | Process for binding chemical waste in dust form, such as filter dusts or the like, to form solids |
-
1991
- 1991-07-23 DE DE19914124355 patent/DE4124355A1/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2109671A1 (en) * | 1970-03-02 | 1971-09-16 | Lundquist H | Method and device for utilizing waste generated in the manufacture or processing of plastic-coated paper |
DE2629278A1 (en) * | 1975-07-03 | 1977-01-27 | Nodet Gougis Montereau | PROCESS AND DEVICE FOR REGULATING Litter SUPPLY ON COMPRESSED AIR-OPERATED SPREAD DISTRIBUTION AND DOSING MACHINES, IN PARTICULAR SAE MACHINES |
JPS55152042A (en) * | 1979-05-15 | 1980-11-27 | Tokiwa Kemikon Kk | Production of interior core material for automobile using used paper as raw material |
DE3246755A1 (en) * | 1982-12-17 | 1984-06-20 | Richard 4937 Lage Pott | METHOD FOR PRODUCING A MOLDED BODY FROM COMPOSITE MATERIAL AND MOLDED BODY PRODUCED BY THIS METHOD |
DE3501139A1 (en) * | 1985-01-15 | 1986-07-17 | Horst 2053 Grabau Schröder | Moulding from plastics wastes and process for the production thereof |
DE3716759A1 (en) * | 1986-05-19 | 1987-11-26 | Enso Gutzeit Oy | METHOD FOR PRODUCING PANELS |
DE3725965A1 (en) * | 1987-08-05 | 1989-02-16 | Signode System Gmbh | METHOD FOR PRODUCING MOLDED BODIES FROM PAPER AND A THERMOPLASTIC PLASTIC |
DE3822759A1 (en) * | 1988-07-05 | 1990-01-18 | Baehre & Greten | Process for treating paper and/or cutting and/or planing chippings or shavings and/or wood fibres or the like and for producing mouldings, in particular boards, from a mixture of gypsum and fibrous material |
DE3904244A1 (en) * | 1989-02-13 | 1990-08-16 | Wilfried Schraufstetter | Process for binding chemical waste in dust form, such as filter dusts or the like, to form solids |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4231097A1 (en) * | 1992-09-17 | 1994-03-24 | Evd Gmbh | Process for producing a composite particle body and the body produced according to this |
US7521117B2 (en) | 2005-05-13 | 2009-04-21 | Coveright Surfaces Holding Gmbh | Resin composition comprising waste of resin impregnated material |
WO2008077793A1 (en) * | 2006-12-22 | 2008-07-03 | Fritz Egger Gmbh & Co. | Fiberboard and process for production thereof |
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OP8 | Request for examination as to paragraph 44 patent law | ||
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