DE2033272A1 - Process for incorporating glass fibers into thermoplastic material - Google Patents

Process for incorporating glass fibers into thermoplastic material

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Publication number
DE2033272A1
DE2033272A1 DE19702033272 DE2033272A DE2033272A1 DE 2033272 A1 DE2033272 A1 DE 2033272A1 DE 19702033272 DE19702033272 DE 19702033272 DE 2033272 A DE2033272 A DE 2033272A DE 2033272 A1 DE2033272 A1 DE 2033272A1
Authority
DE
Germany
Prior art keywords
glass fibers
screw machine
thermoplastic material
rovings
machine
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.)
Pending
Application number
DE19702033272
Other languages
German (de)
Inventor
Dieter Dr 4130 Mohrs Weirauch Kurt Dr Curtius Ulrich Dr Keßler Hans Josef Dipl Ing 4150Krefeld Lohr
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.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DE19702033272 priority Critical patent/DE2033272A1/en
Priority to CA117,069A priority patent/CA949277A/en
Priority to GB3104171A priority patent/GB1330395A/en
Priority to NL7109198A priority patent/NL7109198A/xx
Priority to BE769462A priority patent/BE769462A/en
Priority to FR7124364A priority patent/FR2097191B1/fr
Publication of DE2033272A1 publication Critical patent/DE2033272A1/en
Pending legal-status Critical Current

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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
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/426—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with consecutive casings or screws, e.g. for charging, discharging, mixing
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/748—Plants
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7485—Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B29B7/90—Fillers or reinforcements, e.g. fibres
    • B29B7/905—Fillers or reinforcements, e.g. fibres with means for pretreatment of the charges or fibres
    • 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
    • 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
    • B29K2105/18—Fillers oriented

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Reinforced Plastic Materials (AREA)

Description

FARBENFABRIKEN BAYER AGFARBENFABRIKEN BAYER AG

LEVERKUS EN-B*yerwerk Pitcni-AbtellungLEVERKUS EN-B * yerwerk Pitcni department

Mr/ho 3. Juli 1970Mr / ho 3rd July 1970

Verfahren zum Einarbeiten von Glasfasern in thermoplastisches MaterialProcess for incorporating glass fibers into thermoplastic material

Die vorliegende Erfindung "betrifft ein Verfahren zum Einarbeiten von Glasfasern in thermoplastisches Material, indem endlose Glasfasern (Rovings) in eine Plastifiziersehneckenmaschine eingegeben werden, in der das thermoplastische Material aufgeschmolzen und mit den Glasfasern vermischt wird und das Gemisch anschließend ausgestoßen wird.The present invention "relates to a method of incorporating glass fibers into thermoplastic material by endless glass fibers (rovings) in a plasticizing screw machine be entered in which the thermoplastic material is melted and mixed with the glass fibers and the mixture is then expelled.

Durch Einarbeiten von Glasfasern in thermoplastische Materialien lassen sich diese modifizieren, so daß Werkstoffe mit wesentlich verbesserten anwendungstechnischen Eigenschaften erhalten werden. Es ist bekannt, Kurzglasfasern etwa bis 1 mm länge einzuarbeiten, auch das Einbringen von Stapelglasfasern in der Größenordnung von etwa 1 - 10 mm Länge wird praktiziert, und schließlich wird das Einbringen von endlosen Glasfasern, sogenannten Rovings, angewendet. Das Einarbeiten erfolgt mittels Einwellen- oder Doppelwellensehneekenextrudern, indem die Glasfaser zusammen mit dem thermoplastischen Material in den Aufgäbetrichter eingegeben wird, oder indem die Glasfasern getrennt in die Schmelze eingeführt werden.By incorporating glass fibers into thermoplastic materials, these can be modified so that materials can be obtained with significantly improved performance properties. It is known short glass fibers to be incorporated up to a length of about 1 mm, including the introduction of Staple glass fibers on the order of about 1 - 10 mm Length is practiced, and finally the introduction of endless glass fibers, so-called rovings, is used. The incorporation takes place by means of single-shaft or double-shaft tendon extruders, by feeding the glass fiber into the hopper together with the thermoplastic material, or by separating the glass fibers into the Melt are introduced.

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Bevorzugt werden endlose Glasfasern für die Einarbeitung verwendet, die unmittelbar vor der Einführung in den Extruder geschnitten werden { US Patentschrift 3 453 356) oder die endlos in die Schmelze eingezogen und unmittelbar " im Extruder von der Schneckenwelle zerkleinert werden (US Patentschrift 3 304 282). Beide Verfahren haben den Vorzug, daß die Förderung und - bis zu einem gewissen Grade - auch die Dosierung der zugeführten Glasfaser in einfacher Weise gelöst werden kann. Nachteile dieser Verfahren bestehen darin, daß sich für eine Reihe von Thermoplasten aus Gründen der Verträglichkeit von Glas und Polymer nur solche Glasfasern eignen, die keine Schlichten enthalten. Das Fehlen einer Schlichte auf"den Glasfasern bedingt für den Dauerbetrieb unüberwindbare Schwierigkeiten beim Schneideprozeß, so daß die Dosierung der Glasfasern über die Zuführgeschwindigkeit der Rovings weit außerhalb der erforderlichen Genauigkeit liegt. Käufliche, ungeschlichtete Rovings, die z.B. für bestimmte thermoplastische Polyester ausschließlich zur Verstärkung verwendet werden können, sind im Sinne einer kontinuierlich ablaufenden Produktion nicht schneidbar. Beim Verfahren gemäß der US Patentschrift 3 304 282 werden solche Schwierigkeiten wegen des Direkteinzuges der Rovings in den Extruder umgangen, weil die Zerkleinerung im Extruder selbst erfolgt. Die Dosierung der Glasfasermenge kann durch die "Anzähl der eingeführten Rovings und über die Drehzahl der Schnecke geregelt werden. Von Nachteil ist jedoch, daß .. der wirtschaftliche Betrieb eines Extruders einen optimalen Füllungsgrad verlangt, d.h., daß bei festgelegter Geometrie der Schneckenmaschine der Durchsatz direkt von der Drehzahl· abhängig ist. Andererseits steigt der Zerkleinerungsgrad der eingeführten Glasfaser mit der Drehzahl an. Das bedeutet, daß zur Einhaltung einer geforderten Produktgualitat die Einhaltung einer bestimmten mittleren Faserlänge: notwendig ist. Die Schneckendrehzahl ist somit bei optimiertem.Continuous glass fibers are preferably used for the incorporation, which immediately before the introduction into the Extruder are cut (US Patent 3 453 356) or drawn endlessly into the melt and immediately " are comminuted in the extruder by the screw shaft (US Pat. No. 3,304,282). Both methods have the Advantage that the promotion and - to a certain extent - also the dosage of the supplied glass fiber in can be solved easily. Disadvantages of these methods are that they work for a number of For reasons of the compatibility of glass and polymer, thermoplastics are only suitable for glass fibers that are not Finishing included. The lack of a finish on "the Glass fibers cause insurmountable difficulties in the cutting process for continuous operation, so that the dosage of the glass fibers is far beyond the required accuracy via the feed speed of the rovings. Commercial, unsized rovings that are used, for example, for certain thermoplastic polyesters for reinforcement purposes only can be used, cannot be cut in the sense of a continuously running production. At the Process according to US Pat. No. 3,304,282 such difficulties due to the direct feeding of the rovings into the Extruder bypassed because the size reduction takes place in the extruder itself. The dosage of the amount of fiberglass can be adjusted by the "Count of the imported rovings and the speed of the Snail can be regulated. The disadvantage, however, is that .. The economical operation of an extruder requires an optimal degree of filling, i.e. that with a fixed geometry the throughput of the screw machine is directly dependent on the speed. On the other hand, the degree of comminution increases of the imported fiber with the speed. That means, that to maintain a required product quality the Compliance with a certain mean fiber length: is necessary. The screw speed is thus optimized.

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Füllungsgrad und geforderter Glasfaserlänge festgelegt. Somit "bleibt als einzige Dosiermöglichkeit in größerem Maßstab die Veränderung der Anzahl der eingeführten Rovings übrig. Da die mechanischen Eigenschaften, wie der Elastizitätsmodul, die Biegefestigkeit, usw. der glasfaserverstärkten Thermoplasten mit der mittleren Glasfaserlange im Granulat ansteigt, muß in vielen Fällen die Drehzahl niedrig gehalten und die Anzahl der einzuziehenden- Rovings stark erhöht werden. Beim Einzug sehr vieler Rovings können örtlich an der Schneckenwelle große Erwärmungen und starker Verschleiß auftreten.Degree of filling and required fiber length specified. Thus, "the only way to dose on a larger scale is to change the number of those introduced Rovings left. Since the mechanical properties, such as the modulus of elasticity, the flexural strength, etc. the glass fiber reinforced thermoplastics with the middle Increases the length of the fiberglass in the granulate must in many cases the speed is kept low and the number of rovings to be drawn in can be greatly increased. When moving in, very much many rovings can be large locally on the worm shaft Warming and heavy wear occur.

Die Verwendung von Kurzglasfasern oder Stapelglasfasern als | Verstärkungsmaterial reicht in vielen Fällen für die erfor- ^ derlichen mechanischen Eigenschaften des Endproduktes nicht aus, weshalb man auf die Verarbeitung von Rovings als Verstärkungsmaterial zurückgreifen muß. Bei Stapelglasfasern ergeben sich außerdem Schwierigkeiten bei der Dosierung und beim Einzug in die Schneckenmaschine, weil diese zum Zusammenballen neigen und dann in der Schneckenwelle Erwärmungen und Verschleiß verursachen.The use of short glass fibers or staple glass fibers as | Reinforcement material is sufficient in many cases for the required ^ similar mechanical properties of the end product out, which is why one has to resort to the processing of rovings as reinforcement material. With staple glass fibers there are also difficulties with the dosage and when it is fed into the screw machine, because it clumps up tend and then cause heating and wear in the worm shaft.

Aufgabe der vorliegenden Erfindung ist es deshalb, ein Verfahren zum Einarbeiten von Glasfasern in thermoplastisches Material zu schaffen, das eine Schonung der Maschinen bei genauer Dosierung und der Erzielung einer relativ konstanten * mittleren Glasfaserlänge im Endprodukt ermöglicht, wobei dieses Endprodukt die geforderten mechanischen Eigenschaften besitzt.The object of the present invention is therefore to provide a method for the incorporation of glass fibers into thermoplastic material, which is gentle on the machines allows precise dosing and the achievement of a relatively constant * average glass fiber length in the end product, whereby this end product has the required mechanical properties.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß in einer zweiten, vorgeschalteten Schneckenmaschine die Glasfasern zerkleinert und mit dieser zweiten Schneckenmaschine in die Plastifizierschneckenmaschine eindosiert werden. Dadurch wird erreicht, daß die Plastifizierschneckenmaschine mit optimaler leistung betrieben werden kann, während mit derThis object is achieved according to the invention in that in a second, upstream screw machine, the glass fibers are shredded and with this second screw machine be dosed into the plasticizing screw machine. This ensures that the plasticizing screw machine can be operated with optimum performance, while with the

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vorgeschalteten Schneckenmaschine die Zerkleinerung und die Dosierung der Glasfaser-Rovings einwandfrei steuerbar sind.upstream screw machine the comminution and the Dosage of the glass fiber rovings are perfectly controllable.

Nach einer besonders günstigen Durchführungsform des erfin-*' dungsgemäßen Verfahrens werden die Glasfasern an einer Stelle in die Plastifizierschneckenmaschine eindosiert, an der das thermoplastische Material bereits aufgeschmolzen ist. Dies bringt den Vorteil, daß die in der vorgeschalteten Schneckenmaschine zerkleinerten Glasfasern in der Plastifizierschneckenmaschine nur noch eine geringe Zerkleinerung erfahren und somit der Verschleiß dieser Maschine gering gehalten wird.According to a particularly favorable form of implementation of the According to the method according to the invention, the glass fibers are metered into the plasticizing screw machine at one point which the thermoplastic material has already melted. This has the advantage that the upstream Screw machine shredded glass fibers in the plasticizing screw machine Only a small amount of crushing is experienced and therefore the wear and tear of this machine is low is held.

Um den Verfahrensabläuf besser beherrschen zu können, sieht die Erfindung in vorteilhafter Weise vor, daß die Wellen der beiden Schneckenmaschinen unabhängig voneinander antreibbar sind. Es versteht sieh, daß durch entsprechende Regeleinrichtungen die leistung der vorgeschalteten Maschine in Abhängigkeit von der Plastifizierschneckenmaschine oder umgekehrt gesteuert werden kann, indem man veränderliche und meßbare Betriebsgrößen als Ausgangswerte für einen Regelprozeß verwendet.In order to be able to control the process flow better, see the invention provides in an advantageous manner that the shafts of the two screw machines can be driven independently of one another are. It is understood that by appropriate control devices the performance of the upstream machine depending on the plasticizing screw machine or can be controlled in reverse by using variable and measurable operating variables as output values for a control process used.

In vorteilhafter Weise sind die beiden Schneckenmasehinen durch eine feste, abdichtende Verbindung miteinander verbunden, so daß die Eindosierung der Glasfasern in die Polymerschmelze auch gegen hohen Druck möglieh ist.The two worm machines are advantageous connected to each other by a solid, sealing connection, so that the dosing of the glass fibers into the Polymer melt is also possible against high pressure.

Weiterhin hat es sich gemäß einer besonderen Atisführungsform des erfindungsgemäßen Verfahrens als vorteilhaft erwiesen, daß in die vorgeschaltete Schneckenmaschiue mit den Glasfasern zusammen ein Gleit- und/oder Entformungsmittel eingegeben wird. Vorzugsweise wird als vorgeschaltete Schnekkenmaschine eine Doppelwellenschneckenmaschine verwendet.Furthermore, it has been carried out according to a special form of management of the method according to the invention proved to be advantageous, that in the upstream screw machine with the glass fibers a lubricant and / or mold release agent is entered together. Preferably used as an upstream screw machine a twin screw machine is used.

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Diese hat den besonderen Vorteil, daß ihre Zwangsförderung das betriebssichere Abspinnen der Rovings das Zerkleinern und Dosieren und das Einbringen gegen Druck in die Plastifizierschneckenmaschine besonders gut bewältigt.This has the particular advantage that its forced promotion the reliable spinning of the rovings, the chopping and dosing and the introduction into the plasticizing screw machine against pressure handled particularly well.

Ein besonderer Vorteil des erfindungsgemäßen Verfahrens ist es, daß auch solche Rovings zerkleinert werden können, die keine Schlichte tragen, und die mit den bekannten Vorrichtungen (US Patentschrift 3 453 356) nicht geschnitten werden können.A particular advantage of the method according to the invention is it is that rovings that do not carry any size can also be comminuted, and those with the known devices (US Patent 3,453,356) cannot be cut.

Geeignete Thermoplaste für die Einarbeitung von Glasfasern nach dem erfindungsgemäßen Verfahren sind unter anderem: ■ Polycarbonate, Polyamide, Polyäthylen, Polypropylen, . Polystyrol und dessen Copolymere, Polyacetale, Als Gleitmittel eignen sich beispielsweise Glycerinester höherer Fettsäuren.Suitable thermoplastics for the incorporation of glass fibers according to the method according to the invention are inter alia: ■ Polycarbonate, polyamides, polyethylene, polypropylene,. Polystyrene and its copolymers, polyacetals, as lubricants Glycerol esters of higher fatty acids are suitable, for example.

In einer Zeichnung ist ein Ausführungsbeispiel einer Vorrichtung zur Durchführung des Verfahrens rein schematisch dargestellt und nachstehend im Zusammenhang mit dem erfindungsgemäßen Verfahren näher beschrieben: In a drawing, an embodiment of a device for performing the method is purely schematic shown and described in more detail below in connection with the method according to the invention:

Von einer Rolle 1 werden über eine UmIenkrolle 2 Glasfaser-Rovings 3 von einer Schneckenmaschine 4 in den Einlaßtrichter eingezogen. Aus einem Vorratsbehälter 6 wird ein Gleitmittel in geringer Menge ebenfalls in die Schneckenmaschine·4 *Glass fiber rovings are produced from a roll 1 via a pulley 2 3 drawn into the inlet funnel by a screw machine 4. From a storage container 6, a lubricant is in small amount also in the screw machine 4 *

eindosiert. Die Schneckenwelle 7 zerkleinert die Glasfaser-Rovings entsprechend der eingestellten Drehzahl auf die gewünschte Länge und fördert die Glasfasern zusammen mit dem Gleitmittel zum Einlaßstutzen 8 einer nachgeschalteten Plastifizierschneckenmaschine 9. Die Schneckenmaschine 4 ist mit einem Temperiermantel 10 umgeben, der ein Aufschmelzen des Gleitmittels erlaubt.dosed. The worm shaft 7 comminutes the glass fiber rovings according to the set speed to the desired length and conveys the glass fibers together with it the lubricant to the inlet port 8 of a downstream plasticizing screw machine 9. The screw machine 4 is surrounded by a temperature control jacket 10, which melts of the lubricant allowed.

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Ber Plastifizierschnecke 9 wird ein Thermoplast in Porm von Granulat aus einem Vorratsbehälter 11 über den Einfülltrichter 12 zudosiert und in der Schneckenmaschine 9 mittels der Temperiervorrichtung 13 aufgeschmolzen. Die Schneckenwelle 14 fördert dann die Schmelze zum Auslaß hin, wobei in die Schmelze durch den Einlaßstutzen 8 die Glasfasern eingeführt werden. In dem zwischen dem Einlaßstutzen 8 und dem Auslaß 15 der Plastifizierschneekenmaschine gelegenen Teil erfolgt eine homogene Vermischung von Schmelze und Glasfaser«, Das Gemisch verläßt die Plastifizierschneckenmaschine 9 durch den Auslaß 15 und wird beispielsweise in einer nicht dargestellten Granuliervorrichtung granuliert.About plasticizing screw 9 is a thermoplastic in Porm of granules from a storage container 11 via the filling funnel 12 and melted in the screw machine 9 by means of the temperature control device 13. the Screw shaft 14 then promotes the melt to the outlet, wherein into the melt through the inlet port 8 the Glass fibers are introduced. In the one between the inlet port 8 and the outlet 15 of the plasticizing snow machine a homogeneous mixing takes place of melt and glass fiber «, the mixture leaves the plasticizing screw machine 9 through the outlet 15 and is granulated, for example, in a granulating device (not shown).

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9&8 3/Ί 5 289 & 8 3 / Ί 5 28

Claims (5)

Patentanaprüche: %Patent claims:% 1.1 Verfahren zum Einarbeiten von Glasfasern in thermoplastisches Material, indem endlose Glasfasern (Rovings) in eine Plastifizier-Scbneckenmaschine eingegeben werden, in der das thermoplastische Material aufgeschmolzen und mit den Glasfasern vermischt wird und das Gemisch anschließend ausgestoßen wird, dadurch gekennzeichnet, daß in einer zweiten, vorgeschalteten Schneckenmaschine die Glasfasern zerkleinert und mit dieser zweiten Schneckenmaschine in die Plastifizier-Schneckenmaschine eindosiert werden.1.1 Process for incorporating glass fibers into thermoplastic material by using endless glass fibers (rovings) be fed into a plasticizing screw machine, in which the thermoplastic material is melted and mixed with the glass fibers and then the mixture is ejected, characterized in that the glass fibers in a second, upstream screw machine crushed and metered into the plasticizing screw machine with this second screw machine. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß2. The method according to claim 1, characterized in that die Glasfasern an einer Stelle in die Plastifizier-Schnecken- " maschine eindosiert werden, an der das thermoplastische Material bereits aufgeschmolzen ist.the glass fibers at one point in the plasticizing screw " machine on which the thermoplastic material has already melted. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Wellen der beiden Schneckenmaschinen unabhängig voneinander antreibbar sind. 3. The method according to claim 1 and 2, characterized in that that the shafts of the two screw machines can be driven independently of one another. 4· Verfahren nach Anspruch 1 bis 3* dadurch gekennzeichnet, daß in die vorgeschaltete Schneckenmaschine mit den Glasfasern zusammen ein Gleitmittel und/oder Entfübungsmittel eingegeben wird.4. Method according to claim 1 to 3 * characterized in that that in the upstream screw machine with the glass fibers together a lubricant and / or defoaming agent is entered. 5. Verfahren nach Anspruch 1 bis 4, gekennzeichnet durch die Verwendung einer Doppelwellenschneckenmaschine als vorgeschaltete Schneckenmaschine.5. The method according to claim 1 to 4, characterized by the use of a twin screw machine as a upstream screw machine. IeA 15 147 - - 7 -IeA 15 147 - - 7 - 10 9 8 8 3/15 2 810 9 8 8 3/15 2 8 L e e r s e i t eL e r s e i t e
DE19702033272 1970-07-04 1970-07-04 Process for incorporating glass fibers into thermoplastic material Pending DE2033272A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19702033272 DE2033272A1 (en) 1970-07-04 1970-07-04 Process for incorporating glass fibers into thermoplastic material
CA117,069A CA949277A (en) 1970-07-04 1971-06-30 Process for incorporating glass fibres into thermoplastic materials
GB3104171A GB1330395A (en) 1970-07-04 1971-07-02 Process for incorporating glass fibres into thermoplastic matterial
NL7109198A NL7109198A (en) 1970-07-04 1971-07-02
BE769462A BE769462A (en) 1970-07-04 1971-07-02 PROCESS FOR INCORPORATING GLASS FIBERS IN A THERMOPLASTIC MATERIAL
FR7124364A FR2097191B1 (en) 1970-07-04 1971-07-02

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DE19702033272 DE2033272A1 (en) 1970-07-04 1970-07-04 Process for incorporating glass fibers into thermoplastic material

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DE2033272A1 true DE2033272A1 (en) 1972-01-13

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BE (1) BE769462A (en)
CA (1) CA949277A (en)
DE (1) DE2033272A1 (en)
FR (1) FR2097191B1 (en)
GB (1) GB1330395A (en)
NL (1) NL7109198A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314146A1 (en) * 1972-03-23 1973-10-04 Mitsubishi Petrochemical Co PROCESS FOR EXTRUDING THERMOPLASTIC PLASTIC WITH A HIGH FILL MATERIAL CONTENT
EP0001874A1 (en) * 1977-08-23 1979-05-16 Imperial Chemical Industries Plc Method for producing shaped articles of polyolefins containing anisotropic filler using blow moulding techniques
DE19530020A1 (en) * 1995-08-16 1997-02-20 Menzolit Fibron Gmbh Process for producing a compound from a plastic with a solid fiber insert
DE19638243A1 (en) * 1996-09-16 1998-03-19 Kannegiesser Kmh Kunststofftec Process for producing a plastic, in particular with additives, and extruder for carrying out the process
DE19836787A1 (en) * 1998-08-13 2000-02-17 Dieffenbacher Gmbh Maschf Process and plasticizing extruder for the production of fiber-reinforced plastics
DE102019200936A1 (en) * 2019-01-25 2020-07-30 Robert Bosch Gmbh Process for the production of sized reinforcing material

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706755C2 (en) * 1977-02-17 1983-12-22 Dynamit Nobel Ag, 5210 Troisdorf Method and device for incorporating glass fibers into thermoplastics
FR2607438B2 (en) * 1984-04-11 1989-12-29 Pierre Bonnel DEVICE FOR PRODUCING STRETCHABLE POLYETHYLENE FILMS FOR PALLETISING
US5185117A (en) * 1989-09-05 1993-02-09 Composite Products, Inc. Process for compounding thermoplastic resin and fibers
FR2683483B1 (en) * 1991-11-08 1995-02-24 Vetrotex France Sa METHOD FOR MANUFACTURING A COMPOSITE PRODUCT BY MOLDING.
EP0835734A1 (en) * 1996-09-16 1998-04-15 Kannegiesser KMH Kunststofftechnik GmbH Method of manufacturing plastic with additives, especially fibers, therein, and extruder for carrying out this method
IT1311044B1 (en) * 1999-11-10 2002-02-28 Virginio Schiaretti Societa Pe MACHINE FOR MAKING SYNTHETIC RESIN AND FIBER-STRENGTHENING MIXTURES.
EP2101980A2 (en) * 2006-12-14 2009-09-23 Giuseppe Ponzielli Method and apparatus to produce products made of composite material having solid particles embedded in a polymeric matrix, and method and device for dispersing solid particles into a viscous liquid
CN112892347A (en) * 2020-12-28 2021-06-04 泉州凯平肯拓化工有限公司 Elastomer semi-permanent release agent production equipment and preparation process thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2314146A1 (en) * 1972-03-23 1973-10-04 Mitsubishi Petrochemical Co PROCESS FOR EXTRUDING THERMOPLASTIC PLASTIC WITH A HIGH FILL MATERIAL CONTENT
EP0001874A1 (en) * 1977-08-23 1979-05-16 Imperial Chemical Industries Plc Method for producing shaped articles of polyolefins containing anisotropic filler using blow moulding techniques
DE19530020A1 (en) * 1995-08-16 1997-02-20 Menzolit Fibron Gmbh Process for producing a compound from a plastic with a solid fiber insert
DE19638243A1 (en) * 1996-09-16 1998-03-19 Kannegiesser Kmh Kunststofftec Process for producing a plastic, in particular with additives, and extruder for carrying out the process
DE19836787A1 (en) * 1998-08-13 2000-02-17 Dieffenbacher Gmbh Maschf Process and plasticizing extruder for the production of fiber-reinforced plastics
US6238733B1 (en) 1998-08-13 2001-05-29 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Method and plasticating extruder for producing fiber-reinforced polymer compositions
DE102019200936A1 (en) * 2019-01-25 2020-07-30 Robert Bosch Gmbh Process for the production of sized reinforcing material

Also Published As

Publication number Publication date
FR2097191A1 (en) 1972-03-03
FR2097191B1 (en) 1975-04-18
NL7109198A (en) 1972-01-06
GB1330395A (en) 1973-09-19
BE769462A (en) 1971-11-16
CA949277A (en) 1974-06-18

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