DE102005012062A1 - Reinforcing filled plastics formulations with second plastics component, by supplying higher melting reinforcing component during extrusion of base formulation to form fibrous reinforcement - Google Patents
Reinforcing filled plastics formulations with second plastics component, by supplying higher melting reinforcing component during extrusion of base formulation to form fibrous reinforcement Download PDFInfo
- Publication number
- DE102005012062A1 DE102005012062A1 DE102005012062A DE102005012062A DE102005012062A1 DE 102005012062 A1 DE102005012062 A1 DE 102005012062A1 DE 102005012062 A DE102005012062 A DE 102005012062A DE 102005012062 A DE102005012062 A DE 102005012062A DE 102005012062 A1 DE102005012062 A1 DE 102005012062A1
- Authority
- DE
- Germany
- Prior art keywords
- plastics
- plastic
- reinforcing
- melt
- extruder
- 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- Withdrawn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
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/41—Intermeshing counter-rotating screws
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
-
- 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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
Abstract
Description
Es ist Stand der Technik, dass Kunststoffrezepturen mit organischen oder anorganischen Füllstoffen verstärkt werden. Anorganische Füllstoffe sind in der Regel Kalziumcarbonat oder ähnlich Derivate. Sie dienen in der Regel im Rohrbereich in PVC-Rezepturen zur Reduktion von des Rohstoffpreises oder haben die Funktion in hohen Konzentrationen den Schall besser zu absorbieren. In Verbindung mit Schaum dienen anorganische Füllstoffe zur Vergleichmäßigung der Schaumstruktur bzw. zur Verbesserung der Homogenität.It is state of the art that plastic formulations with organic or inorganic fillers reinforced become. Inorganic fillers are usually calcium carbonate or similar derivatives. They serve usually in the pipe area in PVC formulations for the reduction of of the raw material price or have the function in high concentrations to better absorb the sound. Serve in conjunction with foam inorganic fillers to equalize the Foam structure or to improve the homogeneity.
Zu den anorganischen Füllstoffen zählen auch die Glasfasern bzw. Glaskugeln, die bei hochwertigen Anwendungen zum Einsatz kommen.To the inorganic fillers count too the glass fibers or glass beads used in high-quality applications be used.
Organische Füllstoffe sind häufig Naturfasern. Sie können Holzfasern oder -späne sein, es können Reisschalen oder Kokosnussmehl die Basis bilden. Es kann Stroh oder Bambus enthalten. Die Auswahl der organischen Füllstoffe und die Verfügbarkeit der organischen Füllstoffe ist annährend unbegrenzt.organic fillers are common Natural fibers. You can Wood fibers or shavings be, it can Make rice husks or coconut flour the base. It can be straw or Bamboo included. The selection of organic fillers and availability the organic fillers is near unlimited.
Organische Füllstoffe werden in Konzentrationen bis zu 80, teilweise 90 % des Basiskunststoffes eingesetzt. Die Grenze der Einsatzmenge wird durch geforderte Mindesteigenschaften des Endprofils limitiert. Das Eigenschaftsprofil hat Mindestanforderungen in der Oberflächenqualität, aber auch bzgl. der mechanischen Eigenschaften. Mechanische Eigenschaften sind einmal Werte wie der E-Modul oder Steifigkeit- bzw. Elastizitätswerte oder aber Werte der Schlagzähigkeit.organic fillers are used in concentrations of up to 80, in some cases 90% of the basic plastic. The limit of the amount used is required by minimum properties limited to the final profile. The property profile has minimum requirements in surface quality, but also regarding the mechanical properties. Mechanical properties are once values such as the modulus of elasticity or stiffness or elasticity values or values of impact resistance.
Nachteil der anorganischer Füllstoffe ist es, dass sie in der Regel relativ kurze Längen beinhalten bzw. bei der Extrusion oder Verarbeitung in ihrer Länge zerstört werden. Der größte Teil der organischen Füllstoffe liegt nicht in Faser- sonder in kugelähnlicher Form vor. Sodass Längsverstärkungen nur bedingt möglich sind. Anorganische Füllstoffe werden in der Regel oberflächenbehandelt um eine bessere Haftung zu den Basiskunststoffen zu erzeugen.disadvantage of inorganic fillers is that they usually include relatively short lengths or at the Extrusion or processing will be destroyed in their length. The biggest part the organic fillers is not present in fiber but in ball-like form. Sodass longitudinal reinforcements only conditionally possible are. Inorganic fillers are usually surface treated to create a better adhesion to the base plastics.
Der Nachteil organischer Füllstoffe liegt häufig in der Feuchtigkeitsaufnahme bzw. vorhandenen Feuchtigkeit in der Naturfaser. Diese Feuchtigkeit ist während des Verarbeitungsprozesses unter Druck und somit flüssig und verursacht ein Schäumen beim Austritt aus dem Werkzeug. Selbst wenn dieses Schäumen einen s. g. Mikroschaum auf der Oberfläche eins organischen Füllstoffe produziert ist diess negativ für Festigkeits- und Schlagzähigkeitswerte. D. h. die Grenze der Einsatzmenge wird durch den Grad der Trockenheit des Naturstoffes begrenzt.Of the Disadvantage of organic fillers is common in the moisture absorption or existing moisture in the Natural fiber. This moisture is during the manufacturing process under pressure and thus liquid and causes foaming when exiting the tool. Even if that foaming one s. G. Microfoam on the surface one organic fillers this is negative for Strength and impact resistance values. D. H. The limit of the amount used is determined by the degree of dryness limited to the natural product.
Es ist erfindungsgemäße Aufgabe bei einer Kunststoffmischung aus Kunststoffen mit einem Füllstoff das Eigenschaftsprofil bzgl. der Festigkeit und Zähigkeit zu verbessern. Hierzu sollen in geringen Konzentrationen andersartige Kunststoffe eingesetzt werden.It is task of the invention in a plastic mixture of plastics with a filler the property profile in terms of strength and toughness to improve. For this purpose, in small concentrations different Plastics are used.
Die erfindungsgemäße Aufgabe wird dadurch gelöst, dass innerhalb des Extrusionsprozesses in der Regel in oder kurz vor der Meteringzone mit Hilfe eines zweiten Extruders eine Schmelze mit einer höheren Schmelztemperatur zugespritzt wird. Dabei wird erfindungsgemäß die Schmelze aus s. g. Einspritzdüsen im Zylinder des ersten Extruders herausgezogen und liegt verstreckt in der ersten Schmelze vor.The inventive task is solved by that within the extrusion process usually in or short before the Meteringzone with the help of a second extruder a melt with a higher one Melting temperature is injected. In this case, according to the invention, the melt from s. G. injectors pulled out in the cylinder of the first extruder and is stretched in the first melt before.
Ein
erfindungsgemäßes Beispiel
ist in
Die
Anlage enthält
den Extruder (
Die
Anlage enthält
einen zweiten Extruder (
Die
Schmelze aus Extruder (
Je nach Anforderung der zu erzeugenden Qualität werden diese Fäden mehr oder weniger eingemischt, zertrennt durch entsprechende Auslegung mit scherintensiven Bereichen oder liegen in der Oberfläche als fadenförmige Verstärkungsfasern vor.ever Upon request of the quality to be produced, these threads become more or less mixed, separated by appropriate interpretation shear-intensive areas or lie in the surface as threadlike reinforcing fibers in front.
Durch die Einbringung in der Schmelze, teilweise auch durch zusätzliche Additive wird eine exellente Haftung zwischen den hochschmelzenden Kunststoffen in Verbindung mit den Basiskunststoffen der füllstoffhaltigen Kunststoffen erreicht.The inclusion in the melt, sometimes by additional additives is an excellent adhesion between the refractory Plastics achieved in conjunction with the basic plastics of the filler-containing plastics.
Eine andere erfinderrische Ausführung bringt gefärbte oder durch sonstige Eigenschaften behaftete Schmelze in eine füllstoffhaltige Kunststoffmischung ein.A another inventive version brings colored or melt affected by other properties in a filler-containing Plastic mixture.
Eine wiederum andere Ausführung ist in der Lage mehrere unterschiedliche Kunststoffe oder Mischungen an einer bzw. mehreren Positionen entlang des Extruders zuzuführen. Durch diese Ausführung können Teile der verstärkenden Kunststoffe eingemischt und im Prozess vermischt werden und andere relativ weit am Ende des Prozesse zugegeben Kunststoffe dienen als faserförmige Verstärkungsstoffe in Längsrichtung.A another version is capable of several different plastics or blends feed at one or more positions along the extruder. By this design can be parts the reinforcing Plastics are mixed in and mixed in the process and others relatively Far added at the end of the process Plastics serve as fibrous reinforcing materials longitudinal.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005012062A DE102005012062A1 (en) | 2004-10-22 | 2005-03-16 | Reinforcing filled plastics formulations with second plastics component, by supplying higher melting reinforcing component during extrusion of base formulation to form fibrous reinforcement |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004051916 | 2004-10-22 | ||
DE102004051916.1 | 2004-10-22 | ||
DE102005012062A DE102005012062A1 (en) | 2004-10-22 | 2005-03-16 | Reinforcing filled plastics formulations with second plastics component, by supplying higher melting reinforcing component during extrusion of base formulation to form fibrous reinforcement |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005012062A1 true DE102005012062A1 (en) | 2006-04-27 |
Family
ID=36129074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005012062A Withdrawn DE102005012062A1 (en) | 2004-10-22 | 2005-03-16 | Reinforcing filled plastics formulations with second plastics component, by supplying higher melting reinforcing component during extrusion of base formulation to form fibrous reinforcement |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005012062A1 (en) |
-
2005
- 2005-03-16 DE DE102005012062A patent/DE102005012062A1/en not_active Withdrawn
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