BE614514A - - Google Patents

Info

Publication number
BE614514A
BE614514A BE614514DA BE614514A BE 614514 A BE614514 A BE 614514A BE 614514D A BE614514D A BE 614514DA BE 614514 A BE614514 A BE 614514A
Authority
BE
Belgium
Prior art keywords
die
screw
screws
heads
engaging
Prior art date
Application number
Other languages
French (fr)
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.)
Publication date
Publication of BE614514A publication Critical patent/BE614514A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B11/00Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22Extrusion presses; Dies therefor
    • B30B11/24Extrusion presses; Dies therefor using screws or worms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/305Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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

Landscapes

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

Description

       

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



  Elément d<.' transition- pôur-xtrudsuas destinées aux nasson thermoplastiques. Dans le brevet principal, on décrit un dispositif pour ex- 
 EMI1.2 
 trudeuses 2.. grands diamètres dans lesquelles on passe u #" jid licjinètre à un petit diamètre de la filière, l'extrémité ,:::':2:.eur de la vis étant affranchie ou formant un angle très obtus, cotte extrémité formant également, conjointement avec la filière, qui présente également une surface plane ou formant un angle très obtus, un intervalle étroit. 



   Dans ce cas, le rapport entre le diamètre de la vis et le 
 EMI1.3 
 diainètre de l'orifice d'entrée da lap filière est sup-rl-.;'':" :1, 

 <Desc/Clms Page number 2> 

   l'intervalle   entre   l'extrémité   antérieure de la   via   et la fillère étant inférieur 8. 1/10 du diamètre de la vis. 



   A présent, on a trouvé qu'en employant une   filière     compor-   tant des passages étroits, par exemple des fentes,   on   pouvait supprimer la pièce de passage, de façon que la filière soit direc-   tement devant   l'extrudeuse. Dans ce cas, comme dansle brevet principal, l'extrémité de la vis comporte une tête   place   et, entre l'extrémité antérieure de la vis et la filière, il   n'y a     qu'un   in-   tervalle   étroit. Une ou plusieurs vis adjacentes   peuvent   fonctionner dans la filière, les vis s'engageant   l'une   dans l'autre   pouvait     tourner   dans le même sens ou dans des sers cppesés.

   Les têtes de vis peuvent être avantageusement   ovales ..¯   dentées. 



   La figure I montre le dispositif avec le canal d'injection (1) sous forme d'un intervalle, la vis (2) avec la tête plate (3) l'étroite fente   (5)   étant formée entre la tête de vis  (3)  et la filière (4). Si l'on traite, par exemple, du chlorure de polyvinyle exempt de plastifiant, on emploie, de   préférence,     un in-   tervalle inférieur à 4 mm. 



   La figure II montre deux doubles vis (5, 6) s'engageant l'une dans l'autre, comportant les deux têtes coniques (7) et   fon   tionnant directement dans la filière (3). Deux forces de réalisation différentes de la filière (9, 10) sont représentées en   coupe.   la figure III montre une presse à fente avec les vis (11)   -et   lestêtes (12), les vis ne s'engageant pas l'ule dans   l'autre.   



  Le produit est mélangé intimement devant la filière   (13) par   la 
 EMI2.1 
 forme de réalisation de la présente invention 202' -"l ) i -1 se forse nucune raie sur la bande de matière the La figure IV montre l'autre application d'.in'B nr2,--e -;z --enta avec les vis (11), qui ne s'engagent pas l'une dans l'autre. 



  Dans ce cas, comme le montre la vue en coupe, les têtes (12) de vis .ior.-, o-'-a.les. 



  L'i dispositif permet une très borne ruv.> .--#¯-- z ¯.. ¯ 

 <Desc/Clms Page number 3> 

 bières thermoplastiques et ainsi, aux orifices ce sortie er   :crue   de fentes, on   ootient   des bandas ou des feuilles ayant unesurface parfaite. De la sorte, on peut   fabriquer   d'une manière particulièrement économique et simple des feuilles et des   bandas   de matières synthétiques thermoplastiques. 



    REVENDICATIONS   
1.- Dispositif pour extrudeuses à grands diamètres dans desquelles on passe d'un   rand   diamètre à un petit diamètre de la filière   suivant   le brevet principal,   caractérisa   en ce que, au lieu de la filière   (4),   on adapte directement la   filière   (4),   comportant   des passages étroits, à l'extrémité antérieure   plat'5     (3) de   la vis.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



  Element d <. ' transition- pôur-xtrudsuas intended for thermoplastic nassons. The main patent describes a device for ex-
 EMI1.2
 trudeuses 2 .. large diameters in which we pass u # "jid licjinètre to a small diameter of the die, the end, ::: ': 2: .eur of the screw being free or forming a very obtuse angle, its end also forming, together with the die, which also has a flat surface or forming a very obtuse angle, a narrow gap.



   In this case, the ratio between the diameter of the screw and the
 EMI1.3
 diaineter of the inlet of the die is greater; '': ": 1,

 <Desc / Clms Page number 2>

   the interval between the anterior end of the via and the fillere being less than 8. 1/10 of the diameter of the screw.



   It has now been found that by employing a die with narrow passages, eg slots, the passage piece can be omitted so that the die is directly in front of the extruder. In this case, as in the main patent, the end of the screw has a square head and between the anterior end of the screw and the die there is only a narrow gap. One or more adjacent screws can run in the die, the screws engaging one in the other could turn in the same direction or in crimped locks.

   The screw heads can advantageously be oval ..¯ toothed.



   Figure I shows the device with the injection channel (1) as a gap, the screw (2) with the flat head (3) the narrow slot (5) being formed between the screw head (3 ) and the sector (4). If, for example, plasticizer-free polyvinyl chloride is processed, a gap of less than 4 mm is preferably employed.



   Figure II shows two double screws (5, 6) engaging one into the other, comprising the two conical heads (7) and running directly in the die (3). Two different production forces of the die (9, 10) are shown in section. Figure III shows a slot press with the screws (11) and the heads (12), the screws not engaging the uule in the other.



  The product is intimately mixed in front of the die (13) by the
 EMI2.1
 embodiment of the present invention 202 '- "l) i -1 forms no stripe on the web of material Figure IV shows the other application of. in'B nr2, - e -; z - enta with the screws (11), which do not engage one in the other.



  In this case, as shown in the sectional view, the heads (12) of screws .ior.-, o -'- a.les.



  The i device allows a very terminal ruv.> .-- # ¯-- z ¯ .. ¯

 <Desc / Clms Page number 3>

 thermoplastic beers and thus, at the orifices this exit er: flood of slits, we ootient bands or leaves having a perfect surface. In this way, it is possible to produce in a particularly economical and simple manner sheets and bands of thermoplastic synthetic materials.



    CLAIMS
1.- Device for extruders with large diameters in which one passes from a large diameter to a small diameter of the die according to the main patent, characterized in that, instead of the die (4), the die is directly adapted ( 4), with narrow passages, at the flat anterior end '5 (3) of the screw.


    

Claims (1)

2.- Dispositif suivant la revendication 1, caractérisé en ce que plusieurs vis séparées ou s'engageant l'une dans l'autre fonctionnent dans la filière (4). 2.- Device according to claim 1, characterized in that several separate screws or engaging one into the other operate in the die (4).
BE614514D 1961-06-30 BE614514A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0036451 1961-06-30

Publications (1)

Publication Number Publication Date
BE614514A true BE614514A (en) 1900-01-01

Family

ID=7043111

Family Applications (2)

Application Number Title Priority Date Filing Date
BE614514D BE614514A (en) 1961-06-30
BE603700D BE603700A (en) 1961-06-30

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE603700D BE603700A (en) 1961-06-30

Country Status (5)

Country Link
BE (2) BE603700A (en)
CH (1) CH402394A (en)
FR (2) FR1284879A (en)
GB (1) GB966424A (en)
NL (1) NL274845A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497912A (en) * 1965-07-02 1970-03-03 Colgate Palmolive Co Apparatus for continuous mixing of solid and liquid material and extrusion of the mixture

Also Published As

Publication number Publication date
CH402394A (en) 1965-11-15
GB966424A (en) 1964-08-12
FR1284879A (en) 1962-02-16
NL274845A (en) 1900-01-01
BE603700A (en) 1900-01-01
FR1316759A (en) 1963-02-01

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