DE1629421A1 - Process and device for the continuous production of tapes or foils from thermoplastic plastics provided with fillers - Google Patents
Process and device for the continuous production of tapes or foils from thermoplastic plastics provided with fillersInfo
- Publication number
- DE1629421A1 DE1629421A1 DE19661629421 DE1629421A DE1629421A1 DE 1629421 A1 DE1629421 A1 DE 1629421A1 DE 19661629421 DE19661629421 DE 19661629421 DE 1629421 A DE1629421 A DE 1629421A DE 1629421 A1 DE1629421 A1 DE 1629421A1
- Authority
- DE
- Germany
- Prior art keywords
- gap
- extruder
- drive
- limitation
- guide
- 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
Links
- 239000011888 foil Substances 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 8
- 229920001169 thermoplastic Polymers 0.000 title claims description 6
- 239000000945 filler Substances 0.000 title claims description 5
- 238000010924 continuous production Methods 0.000 title claims description 3
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92666—Distortion, shrinkage, dilatation, swell or warpage
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- 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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Verfahren und Vorrichtung zur kontinuierlichen Herstellung von Bändern oder Folien aus thermoplastischen, mit Füllstoffen versehenen Kunststoffen Die vorliegende Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zur kontinuerlichen Herstellung von Bändern oder Folien aus thermoplastischen, mit Füllstoffen versehenen Kunststoffen, bei welchem die Bänder oder Folien extrudiert werden. Method and device for the continuous production of strips or films made of thermoplastic, filled plastics The present Invention relates to a method and an apparatus for continuous Manufacture of tapes or foils made of thermoplastic with fillers Plastics, in which the tapes or foils are extruded.
Es ist bekannt, aus thermoplastischen Kunststoffen kontinuierlich Platten, Bänder oder Folien herzustellen. Diese werden erhalten, indem nach dem Aufschmelzen und Fördern aus dem Extruder und der Breitschlitzdüse die noch plastische Folie ein oder mehrere Kalibrier- oder Glättwalzenpaare durchläuft und so eine gleichmäßige Dicke und glatte Oberfläche erhält.It is known to consist of thermoplastics continuously Manufacture plates, tapes or foils. These are obtained by following the Melting and conveying from the extruder and the slot die the still plastic Foil runs through one or more pairs of calibrating or smoothing rollers and is thus uniform Maintains a thick and smooth surface.
Mit FUllstoffen versehene thermoplastische Kunststoffe, z.B. glasfaserverstärkte Polyamide, lassen sich bisher nicht zu inwandfreien Folien verarbeiten. Durch innere Spannungen, unterschiedliche Ausdehnungskoeffizienen, Sohrumpfung u. dorgl. zwischen FUllstoff und Kunststoff verziehen sich insbesondere die Folienränder sehr stark. Auch tritt durch ungleichmäßige oder pulsierende Förderung des Extruders und durch die hohen Viskositäten der Schmelzen ein Wulst vor dem Walzenpaar auf, der durch ungleichmäßige Abkühlung dann beim Durchquetschen durch den Walzenspalt zu rauhen und unebenen Oberflächen und ungleichmäßigen Dicken führt. Insbesondere werden beim glasfaserverstärkten Polyamid unliebsame Quetschfalten hervorgerufen.Thermoplastics with fillers, e.g. glass fiber reinforced Polyamides have not yet been able to be processed into flawless films. Through inner Stresses, different coefficients of expansion, soot shrinkage and the like. between Filler and plastic, in particular, the edges of the film are very distorted. Also occurs through uneven or pulsating conveyance of the extruder and due to the high viscosities of the melts, a bead appears in front of the pair of rollers, the uneven cooling then when squeezing through the nip leads to rough and uneven surfaces and uneven thicknesses. In particular unpleasant creases are caused in the glass fiber reinforced polyamide.
Diese Folien müssen deshalb nachbehandelt werden. Das kann diskontinuierlich in Pressen geschehen, indem die Folien auf Pressengrö#e geschnitten und sorgfältig vorgetrocknet, dann eingelegt und nach Aufheizen auf Erweichungstemperatur unter hohem Druck nachgepreßt und gerichtet und langsam wieder abgekühlt werden, damit nicht wiederum innere Spannungenauftreten. Bei dieser Methode ist die Foliengroße von der Pressengröße abhängig. Die Kapazität ist durch die langen Aufheiz- und Abkühlzeiten, besonders bei Kunststoffen mit hohem Erweichungspunkt, stark begrenzt.These foils must therefore be treated afterwards. That can be discontinuous done in presses by cutting the foils to press size and carefully pre-dried, then inserted and after heating to softening temperature under high pressure and straightened and slowly cooled again so internal tensions do not arise again. With this method, the foil size is depends on the press size. The capacity is due to the long heating and cooling times, especially with plastics with a high softening point, very limited.
Erfindungsgemäß sind diese Nachteile zu beheben, indem die extrudierte Folie sofort nach Verlassen der Düse noch im plastischen Zstand ln einen Spalt eingeführt und dabei geglättet und egalisiert wird und spätestens nach Verlassen des Spaltes bereits erstarrt.According to the invention, these disadvantages can be remedied by the extruded Immediately after leaving the nozzle, the film was inserted into a gap while still in the plastic state and is smoothed and leveled and at the latest after leaving the gap already frozen.
Dadurch wird erreicht, daß die plastische Folie beim Austritt aus der Extruderdüse nicht durchhängt, sondern von der unteren Spaltbegrenzung abgefangen, getragen und transportiert wird. Etwa auftretende Dickenschwankungen der extrudierten Folie werden in vorteilhafter Weise als Steuergröße für die Relativgeschwindigkeit zwischen Extruderaustrittsgeschwindigkeit und der Abzugsgeschwindigkeit der Spaltvorrichtung ausgenutzt, wodurch bei entsprechender größerer oder kleinerer Relativgeschwindigkeit die Foliendicke konstant gehalten wird.This ensures that the plastic film exits when it emerges the extruder nozzle does not sag, but is caught by the lower gap limitation, is carried and transported. Any fluctuations in thickness of the extruded Foil are advantageously used as a control variable for the relative speed between the extruder exit speed and the take-off speed of the splitting device exploited, whereby with a correspondingly larger or smaller relative speed the film thickness is kept constant.
Die Vorrichtung zur Durchführung des Verfahrens zeichnet sich erfindungsgemäß dadurch aus, daß der Spalteinlaß der Spaltführung unmittelbar hinter der Extruderdüse angeordnet ist, wobei die untere Spaltbegrenzung mit einem Antrieb versehen ist, während die obere Spaltbegrenzung nachgiebig gelagert und mit einem stufenlos verstellbaren Gewicht ausgestattet ist. Damit wird - wie bereits gesagt-das Durchhängen der Folie nach dem Austritt aus dem Extruder vermieden, so daß keine Verzugsspannungen in der Folie auftreten können. Mit dem verstellbaren Gewicht kann die Folie im Spalt unter einen gewissen erforderlichen Druck gesetzt werden.The device for carrying out the method is distinguished according to the invention characterized in that the gap inlet of the gap guide is immediately behind the extruder nozzle is arranged, whereby the lower gap limitation is provided with a drive, while the upper gap limitation is resiliently supported and with a continuously adjustable Weight is fitted. As already mentioned, this prevents the film from sagging after leaving the extruder avoided, so that no distortion stresses in the slide can occur. With the adjustable weight, the film can be placed in the gap be put under some required pressure.
Besonders vorteilhaft ist die Kopplung der oberen Spaltbegrenzung mit einem Schichtdickenmesser, der die Dicke der Folie laufend mißt und bei Schwankungen über ein Steuerorgan den Antrieb für die untere Spaltbegrenzung betätigt, wodurch über die Lautgeschwindigkeit der unteren Spaltbegrenzung die Foliendicke sofort wieder auf den Sollwert korrigiert wird.The coupling of the upper gap delimitation is particularly advantageous with a layer thickness meter that continuously measures the thickness of the film and in the event of fluctuations about a Control organ the drive for the lower gap limitation actuated, whereby the film thickness via the sound speed of the lower gap delimitation is immediately corrected to the setpoint again.
Äquivalent hierzu kann auch das Steueragan, welches mit dem Schicktdickenmesser gekoppelt ist, auf den Extruderantrieb einwirken, wodurch die Foliendicke über die Austrittsgeschwindigkeit konstant gehalten wird.The Steueragan, which is used with the dispatch thickness meter, can also be equivalent to this is coupled to act on the extruder drive, whereby the film thickness over the Exit speed is kept constant.
Um die Erstarrungsgeschwindigkeit besser regulieren zu kannen, ist die S"paltführung vorzugsweise mit Temperiereinrichtungen zum Heizen bzw. Kühlen ausgestattet. In der besonderen konstruktiven Ausführung besteht die Spaltführung aus mindestens einem Walzenpaar oder aus einem Fdrderbandpaar.In order to be able to regulate the freezing speed better, is the gap guide preferably with temperature control devices for heating or cooling fitted. The gap guidance exists in the special constructive design from at least one pair of rollers or from a pair of conveyor belts.
In einer Zeichnung sei nun anhand zweier Ausführungsbeispiele die- Erfindung näher erläutert und zwar zeigen: Fig. 1 die Vorrichtung mit einem Walzenpaar als Spaltführung und mit Regeleinrichtung und Fig. 2 die Vorrichtung mit einem Förderbandpaar als Spaltführung.In a drawing, the following is now based on two exemplary embodiments. The invention is explained in more detail, specifically showing: FIG. 1 the device with a pair of rollers as a gap guide and with a control device and FIG. 2 shows the device with a pair of conveyor belts as a gap guide.
In Fig. 1 wird die Extruderschnecke 1 vom Antrieb 2 angetrieben. Dicht hinter der Extruderdüse 3 iBt die von Antriebsmotor 4 betriebene Walze 5 angeordnet. Darüber A, 10 443 ist die nachgiebig gelagerte Walze 6 vorgesehens die mit dem an einem Hebel 7 stufenlos verstellbaren Belastungsgewicht d ausgestattet ist. Gleichzeitig ist~die Walze 6 mit dem Schichtdickenmesser 9 gekoppelt der mit dem Steuerorgan 10 in Verbindung steht Alternativ kann nun vom Steuerorgan 10 über die Verbindung, ii der Antrieb 2 der Extruderschnecke 1 oder über die Verbindung 12 der Antrieb 4 der Walze 5 beeinflußt werden um die Sehichtdicke der austretenden Folie konstant zu halten.In FIG. 1, the extruder screw 1 is driven by the drive 2. Tight The roller 5 operated by the drive motor 4 is arranged behind the extruder nozzle 3. Above that A, 10 443 the resiliently mounted roller 6 is provided equipped with the load weight d, which is continuously adjustable on a lever 7 is. At the same time, the roller 6 is coupled to the layer thickness meter 9 with the the control element 10 is in connection. Alternatively, the control element 10 can now be accessed via the connection, ii the drive 2 of the extruder screw 1 or via the connection 12 of the drive 4 of the roller 5 can be influenced by the visual thickness of the exiting Keep slide constant.
In Figur 2 wird die Extruderschneoke 1 ebenfalls vom Antrieb 2 angetrieben. Dicht hinter der Extruderdüse 3 ist das untere vom Antriebsmotor 4 angetriebene Förderband 13 angeordnet. Darüber ist das nachgiebig gelagerte Förderband 14 vorgesehen, dessen Umlenkwalze 15 mit dem Belastungsgewicht 8 ausgestattet ist. Die Führungswalzen 16 können ebenfalls belastet werden. Die Umlenkwalze 15 ist außerdem mit dem Schichtdickenmesser 9 gekoppelte der mit dem Steuerorgan 10 in Verbindung steht. Das Konstanthalten der Schichtdicke kann hierebenso wie in Figur 1 über die Verbindung 11 und den über die Verbindung 12 und Extruderantrieb 2 oder/den Förderbandantrieb 4 erfolgen.In FIG. 2, the extruder screw 1 is also driven by the drive 2. Just behind the extruder nozzle 3 is the lower one driven by the drive motor 4 Conveyor belt 13 arranged. Above that, the resiliently mounted conveyor belt 14 is provided, whose deflection roller 15 is equipped with the loading weight 8. The guide rollers 16 can also be charged. The deflection roller 15 is also connected to the layer thickness meter 9 coupled to the control member 10 is in connection. Keeping it constant the layer thickness can here as in Figure 1 via the connection 11 and the above the connection 12 and extruder drive 2 and / or the conveyor belt drive 4 take place.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19661629421 DE1629421A1 (en) | 1966-12-27 | 1966-12-27 | Process and device for the continuous production of tapes or foils from thermoplastic plastics provided with fillers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19661629421 DE1629421A1 (en) | 1966-12-27 | 1966-12-27 | Process and device for the continuous production of tapes or foils from thermoplastic plastics provided with fillers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1629421A1 true DE1629421A1 (en) | 1971-01-28 |
Family
ID=5683214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19661629421 Pending DE1629421A1 (en) | 1966-12-27 | 1966-12-27 | Process and device for the continuous production of tapes or foils from thermoplastic plastics provided with fillers |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1629421A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984000515A1 (en) * | 1982-07-27 | 1984-02-16 | Isovolta | Method for manufacturing an electric insulating sheet and utilization thereof |
-
1966
- 1966-12-27 DE DE19661629421 patent/DE1629421A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984000515A1 (en) * | 1982-07-27 | 1984-02-16 | Isovolta | Method for manufacturing an electric insulating sheet and utilization thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0461488B1 (en) | Method for fabricating of glazed extruded solid plates or foils from thermoplastic material | |
| DE3530309C2 (en) | ||
| DE3320550C2 (en) | ||
| DE2158141C3 (en) | Method and device for producing a stretched sheet of thermoplastic material | |
| EP0484721B1 (en) | Method and apparatus for extruding hollow thermoplastic panels | |
| DE2532406B2 (en) | Method and apparatus for the continuous production of a pipe from a web of a thermoplastic foam | |
| DE1704963B1 (en) | METHOD FOR CONTINUOUS PRODUCTION OF PANELS | |
| DE2162229B2 (en) | Method and device for feeding raw materials into the shear gap of machines for producing films, webs, foils or plates made of plastic | |
| DE1629421A1 (en) | Process and device for the continuous production of tapes or foils from thermoplastic plastics provided with fillers | |
| DE1504097C2 (en) | PROCESS FOR MANUFACTURING SHEETS OR PANELS FROM PREFERABLY TRANSPARENT THERMOPLASTIC PLASTICS WITH EMBEDDED REINFORCING INSERTS | |
| DE2520217C2 (en) | Method and device for the continuous welding of large-area thermoplastic plastic films or panels | |
| DE1779204A1 (en) | Method and device for surface profiling of thermoplastic film | |
| CH442719A (en) | Process and device for the production of plastic films by the extrusion process with subsequent rolling treatment | |
| AT203201B (en) | Method and device for the production of webs from plastically deformable masses | |
| EP0732183B1 (en) | Apparatus and process for the continuous manufacturing of films, webs or sheets | |
| DE1273172C2 (en) | Method and device for the continuous production of a strip of thermoplastic material | |
| DE102007011463A1 (en) | Producing heavy film by an extrusion process using a device for damming and damping structure-borne- and airborne sound, comprises plasticizing thermoplastic as source material, and extruding thermoplastic by shaped nozzle to a plastic web | |
| EP0419982B1 (en) | Method and installation for manufacturing composite extrudates | |
| DE2427129A1 (en) | Machine for applying a film covering to a plastics profile - allows appln under pressure without risk of deforming the profile | |
| DE1778708A1 (en) | Method and device for the continuous production of extruded profiles from liquid foamable plastics based on two or more components | |
| DE1504015A1 (en) | Process for the production of homogeneous calender films | |
| DE2458983C3 (en) | Method of sealing between two parallel strips | |
| DE1629321C3 (en) | Method and apparatus for the continuous production of foamed webs | |
| DE1479894A1 (en) | Method and device for the continuous production of sheets from thermoplastics | |
| AT256449B (en) | Method and device for the continuous production of films from thermosetting synthetic resins |