DE1125146B - Wide slot nozzle for pressing out thermoplastic plastics - Google Patents

Wide slot nozzle for pressing out thermoplastic plastics

Info

Publication number
DE1125146B
DE1125146B DEB54340A DEB0054340A DE1125146B DE 1125146 B DE1125146 B DE 1125146B DE B54340 A DEB54340 A DE B54340A DE B0054340 A DEB0054340 A DE B0054340A DE 1125146 B DE1125146 B DE 1125146B
Authority
DE
Germany
Prior art keywords
nozzle
lips
slot
baffles
pressing out
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
DEB54340A
Other languages
German (de)
Inventor
Kurt Mente
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.)
JH Benecke GmbH
Original Assignee
JH Benecke GmbH
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 JH Benecke GmbH filed Critical JH Benecke GmbH
Priority to DEB54340A priority Critical patent/DE1125146B/en
Publication of DE1125146B publication Critical patent/DE1125146B/en
Pending legal-status Critical Current

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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
    • B29C48/313—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections by positioning the die lips
    • 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
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/255—Flow control means, e.g. valves
    • B29C48/2556—Flow control means, e.g. valves provided in or in the proximity of dies
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • B29K2995/0073—Roughness, e.g. anti-slip smooth

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

Breitschlitzdüse zum Auspressen von thermoplastischen Kunststoffmassen Die Erfindung betrifft eine Breitschlitzdüse zum Auspressen von thermoplastischen Kunststoffmassen zwecks Herstellung von Folien oder Platten. Wide slot nozzle for pressing out thermoplastic compounds The invention relates to a slot die for extruding thermoplastics Plastic compounds for the production of foils or plates.

Aufgabe einer Breitschlitzdüse ist es, den vom Extruder od. dgl. gelieferten Schmelzfluß in eine Folie oder Platte gleichförmiger Stärke umzuformen. Die bekannten Breitschlitzdüsen bestehen dabei im wesentlichen aus einem beheizbaren dickwandigen ein- oder zweiteiligen Hohikörper mit einer Eintrittsöffnung und einer achsparallel vor dem Verteilerkanal angeordneten schlitzförmigen Austrittsöffnung. The task of a slot die is to remove the od from the extruder. to transform the supplied melt flow into a film or sheet of uniform thickness. The known slot nozzles essentially consist of a heatable one thick-walled one- or two-part hollow body with an inlet opening and one slit-shaped outlet opening arranged axially parallel in front of the distributor channel.

Diese ist häufig zwecks Einstellung der gewünschten Folienstärke mit elastischen Lippen versehen, die mit Einstellschrauben reguliert werden können.This is often used to set the desired film thickness provided with elastic lips that can be adjusted with adjusting screws.

Es ist auch bei Breitschlitzdüsen mit einstellbaren Düsenlippen bereits bekannt, kurz vor dem Austrittsspalt der Düse mittels Schrauben verstellbare Stauleisten anzubringen, um einmal den Staudruck vor der Schnecke, zum anderen den Materialfluß in der Düse örtlich regulieren zu können. Diese Stauleisten liegen innerhalb des massedurchflossenen Querschnitts. This is also the case with slot nozzles with adjustable nozzle lips known, just before the exit gap of the nozzle by means of screws adjustable baffles to be attached to the back pressure in front of the screw on the one hand, and the flow of material on the other to be able to regulate locally in the nozzle. These stowage bars are located within the cross-section through which mass flows.

Es hat sich gezeigt, daß die Anordnung von Stauleisten innerhalb des massedurchflossenen Querschnitts nachteilig ist, da sich in den sogenannten Totzonen vor und hinter der Stauleiste leicht verkohlte Reste bilden, die das Aussehen und die Beschaffenheit der herzustellenden Folien beeinträchtigen. It has been shown that the arrangement of stowage bars within the mass flow cross section is disadvantageous, since in the so-called Dead zones in front of and behind the baffle bar form slightly charred residues that affect the appearance and affect the quality of the films to be produced.

Erfindungsgemäß wird dieser Nachteil bei einer Breitschlitzdüse der vorgenannten Art mit gegeneinander bewegbaren Stauleisten und zueinander einstellbaren Düsenlippen dadurch vermieden, daß die Stauleisten auf der vom Kunststoffmassedurchfluß abgelegenen Rückseite der sich nach innen in den Düsenkörper bis über die Stauleisten hinein erstreckenden, in an sich bekannter Weise elastisch verformbaren Düsenlippen angeordnet sind. Bei dieser Anordnung wirken die Stauleisten somit indirekt auf den Kunststoffmassedurchfiuß, wobei die Rückstellung der Düsenlippen durch den inneren Überdruck der Kunststoffmasse erfolgt. According to the invention, this disadvantage is in a slot die aforementioned type with mutually movable baffles and adjustable to each other Nozzle lips avoided by the fact that the baffles on the plastic mass flow remote back of the inward into the nozzle body up over the jam bars extending into it, elastically deformable nozzle lips in a manner known per se are arranged. With this arrangement, the stowage strips thus act indirectly the plastic mass flow, with the resetting of the nozzle lips through the inner Overpressure of the plastic mass takes place.

Mit Hilfe der neuen Breitschlitzdüse lassen sich Platten oder Folien, z. B. von einer Dicke von 0,5 bis 3 mm, von großer Homogenität und einheitlicher Dicke herstellen. Neben weichmacherfreien oder weichgestelltem Polyvinylchlorid können auch andere thermoplastische Kunststoffe mit der erfindungsgemäßen Vorrichtung verarbeitet werden. With the help of the new slot die, plates or foils, z. B. of a thickness of 0.5 to 3 mm, of great homogeneity and more uniform Making thickness. In addition to plasticizer-free or plasticized polyvinyl chloride other thermoplastics can also be used with the device according to the invention are processed.

Die Erfindung ist an Hand der in der Zeichnung schematisch im Querschnitt dargestellten Ausführungsform näher erläutert. The invention is shown schematically in cross section with reference to the drawing illustrated embodiment explained in more detail.

In dem Düsenkörper 1 der Breitschlitzdüse sind die sich nach innen erstreckenden, elastisch verformbaren Düsenlippen 2 und 3 angeordnet. Diese weisen in ihrem der Austrittszone 11 zu gelegenen Teil Heizeinrichtungen 4 auf. Auf der vom Kunststoffmassedurchfluß abgelegenen Rückseite der Düsenlippen 2, 3 sind die Stauleisten 5 in entsprechenden Aussparungen in den Düsenlippen 2, 3 angeordnet. Die Stauleisten 5 wirken auf die elastisch deformierbaren Düsenlippen 2, 3 unter Bildung der Stauzone 10. Die Regulierung der Spaltbreite der Breitschlitzdüse erfolgt mit Hilfe von Stellschrauben 6, die sich im Austrittsende des Düsenkörpers 1 befinden. Zur Einstellung der Stauleisten 5 sind die Stellschrauben 7 vorgesehen. Der Düsenkörper 1 weist weiter die mit der Schneckenpresse in Verbindung stehende Einlaufzone 8 und den Verteilungskanal 9 auf. In the nozzle body 1 of the slot nozzle they are inwardly extending, elastically deformable nozzle lips 2 and 3 arranged. These wise in their part to be located in the exit zone 11, heating devices 4 have. On the The rear of the nozzle lips 2, 3, remote from the plastic mass flow, are the Damming strips 5 arranged in corresponding recesses in the nozzle lips 2, 3. The baffles 5 act on the elastically deformable nozzle lips 2, 3 below Formation of the damming zone 10. The regulation of the slot width of the slot nozzle takes place with the aid of adjusting screws 6 which are located in the outlet end of the nozzle body 1. The adjusting screws 7 are provided for setting the baffle strips 5. The nozzle body 1 further shows the inlet zone 8 which is connected to the screw press and the distribution channel 9.

Claims (3)

PATENTANSPRt)CHE: 1. Breitschlitzdüse zum Auspressen von thermoplastischen Kunststoffmassen zwecks Herstellung von Folien oder Platten mit im Düsenkörper im Abstand von der Düsenaustrittszone nach innen zu angeordneten, gegeneinander mit Hilfe von außen einstellbaren Einrichtungen bewegbaren, den Kunststoffmassedurchfluß im Düsenschlitz regulierenden Stauleisten, zueinander in der Düsenaustrittszone einstellbaren Düsenlippen und im Innern des Düsenkörpers angeordneten Heizeinrichtungen, dadurch gekennzeichnet, daß die Stauleisten (5) auf der vom Kunststoffmassedurchfluß abgelegenen Rückseite der sich nach innen in den Düsenkörper (1) bis über die Stauleisten (5) hinein erstreckenden, in an sich be kannter Weise elastisch verformbaren Düsenlippen (2, 3) angeordnet sind. PATENT APPRt) CHE: 1. Wide slot nozzle for pressing out thermoplastic Plastic compounds for the production of foils or plates with in the nozzle body in the Distance from the nozzle outlet zone to the inside to be arranged, against each other with With the help of externally adjustable devices movable, the plastic mass flow in the nozzle slot regulating baffles, to each other in the nozzle outlet zone adjustable nozzle lips and heating devices arranged inside the nozzle body, characterized in that the baffle strips (5) on the flow of plastic mass remote back of the inward into the nozzle body (1) up over the baffles (5) extending into it, elastically deformable nozzle lips in a known manner (2, 3) are arranged. 2. Breitschlitzdüse nach Anspruch 1, dadurch gekennzeichnet, daß die Heizeinrichtungen (4) in dem vor den Stauleisten (5) nach der Austrittszone (11) zu gelegenen Teil der Düsenlippen (2, 3) angeordnet sind. 2. slot nozzle according to claim 1, characterized in that the heating devices (4) in front of the baffle strips (5) after the exit zone (11) are arranged on the part of the nozzle lips (2, 3) located. 3. Breitschlitzdüse nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Stauleisten (5) in auf der Rückseite der Düsenlippen (2, 3) befindlichen Aussparungen angeordnet sind. 3. slot nozzle according to claim 1 and 2, characterized in that that the baffles (5) located on the back of the nozzle lips (2, 3) Recesses are arranged. In Betracht gezogene Druckschriften: Französische Patentschrift Nr. 966 508; britische Patentschrift Nr. 792 744; USA.-Patentschriften Nr. 2 686 931, 2813301. Documents considered: French patent specification No. 966 508; British Patent No. 792,744; U.S. Patents No. 2,686,931, 2813301.
DEB54340A 1959-08-07 1959-08-07 Wide slot nozzle for pressing out thermoplastic plastics Pending DE1125146B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB54340A DE1125146B (en) 1959-08-07 1959-08-07 Wide slot nozzle for pressing out thermoplastic plastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB54340A DE1125146B (en) 1959-08-07 1959-08-07 Wide slot nozzle for pressing out thermoplastic plastics

Publications (1)

Publication Number Publication Date
DE1125146B true DE1125146B (en) 1962-03-08

Family

ID=6970557

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB54340A Pending DE1125146B (en) 1959-08-07 1959-08-07 Wide slot nozzle for pressing out thermoplastic plastics

Country Status (1)

Country Link
DE (1) DE1125146B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360823A (en) * 1966-03-07 1968-01-02 Allied Chem Flat film die
US5273420A (en) * 1990-11-05 1993-12-28 Roehm Gmbh Chemische Fabrik Extrusion die for thermoplastic webs
DE4400069C1 (en) * 1994-01-04 1995-04-06 Heinz Dr Ing Gros Adjustable choke with flat passage cross-section
WO1997009163A1 (en) * 1995-09-01 1997-03-13 Röhm Gmbh Extrusion die with adjustable corrugated diaphragm
WO1998057792A1 (en) * 1997-06-16 1998-12-23 Extrusion Dies, Inc. Flow control device and apparatus for mounting same
US5858096A (en) * 1995-09-06 1999-01-12 Voith Sulzer Papiermaschinen Gmbh Application unit for the direct or indirect application of a liquid or pasty medium onto a moving material web
WO1999047336A1 (en) * 1998-03-17 1999-09-23 Extrusion Dies, Inc. Extrusion die membrane
US6099290A (en) * 1995-09-27 2000-08-08 Gross; Heinz Apparatus for variable limitation of a flat flow channel
US6352424B1 (en) 1999-12-30 2002-03-05 Extrusion Dies, Inc. Extrusion die membrane assembly
US6367776B1 (en) 1999-04-21 2002-04-09 Extrusion Dies, Inc. Flow control device and apparatus for mounting same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR966508A (en) * 1947-05-17 1950-10-12 Cellulose Sidac S A Soc Ind De Plastic extrusion method and apparatus
US2686931A (en) * 1952-10-27 1954-08-24 Du Pont Apparatus for extruding beaded film
US2813301A (en) * 1954-12-13 1957-11-19 Monsanto Chemicals Sheeting die
GB792744A (en) * 1955-02-23 1958-04-02 Du Pont Improvements relating to film extrusion apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR966508A (en) * 1947-05-17 1950-10-12 Cellulose Sidac S A Soc Ind De Plastic extrusion method and apparatus
US2686931A (en) * 1952-10-27 1954-08-24 Du Pont Apparatus for extruding beaded film
US2813301A (en) * 1954-12-13 1957-11-19 Monsanto Chemicals Sheeting die
GB792744A (en) * 1955-02-23 1958-04-02 Du Pont Improvements relating to film extrusion apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360823A (en) * 1966-03-07 1968-01-02 Allied Chem Flat film die
US5273420A (en) * 1990-11-05 1993-12-28 Roehm Gmbh Chemische Fabrik Extrusion die for thermoplastic webs
DE4400069C1 (en) * 1994-01-04 1995-04-06 Heinz Dr Ing Gros Adjustable choke with flat passage cross-section
WO1997009163A1 (en) * 1995-09-01 1997-03-13 Röhm Gmbh Extrusion die with adjustable corrugated diaphragm
US5858096A (en) * 1995-09-06 1999-01-12 Voith Sulzer Papiermaschinen Gmbh Application unit for the direct or indirect application of a liquid or pasty medium onto a moving material web
US6475414B1 (en) 1995-09-27 2002-11-05 Heinz Gross Method of extracting a melt strand
US6099290A (en) * 1995-09-27 2000-08-08 Gross; Heinz Apparatus for variable limitation of a flat flow channel
WO1998057792A1 (en) * 1997-06-16 1998-12-23 Extrusion Dies, Inc. Flow control device and apparatus for mounting same
US6109592A (en) * 1997-06-16 2000-08-29 Extrusion Dies, Inc. Flow control device and apparatus for mounting same
WO1999047336A1 (en) * 1998-03-17 1999-09-23 Extrusion Dies, Inc. Extrusion die membrane
US6206680B1 (en) 1998-03-17 2001-03-27 Extrusion Dies, Inc. Extrusion die membrane
US6367776B1 (en) 1999-04-21 2002-04-09 Extrusion Dies, Inc. Flow control device and apparatus for mounting same
US6352424B1 (en) 1999-12-30 2002-03-05 Extrusion Dies, Inc. Extrusion die membrane assembly

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