GB1171590A - Improvements in or relating to Screw Extruders with Gas Removal Means - Google Patents

Improvements in or relating to Screw Extruders with Gas Removal Means

Info

Publication number
GB1171590A
GB1171590A GB52353/68A GB5235368A GB1171590A GB 1171590 A GB1171590 A GB 1171590A GB 52353/68 A GB52353/68 A GB 52353/68A GB 5235368 A GB5235368 A GB 5235368A GB 1171590 A GB1171590 A GB 1171590A
Authority
GB
United Kingdom
Prior art keywords
baffle
channels
screw extruders
vent
relating
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.)
Expired
Application number
GB52353/68A
Inventor
Frantisek Kotasek
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.)
Reifenhauser KG
Original Assignee
Reifenhauser KG
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 Reifenhauser KG filed Critical Reifenhauser KG
Publication of GB1171590A publication Critical patent/GB1171590A/en
Expired 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
    • 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
    • B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
    • 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
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/565—Screws having projections other than the thread, e.g. pins
    • 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
    • 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

Abstract

1,171,590. Screw extruders; degassing means. REIFENHAUSER K.G. 5 Nov., 1968 [12 Feb., 1968], No. 52353/68. Heading B5A. An extruder having one or more screws for working synthetic thermoplastics is provided with degassing means comprising a baffle 3, a decompression zone 5 and vent(s) 4, the baffle having channels 6, Fig. 2, and (Fig. 3, not shown), wherein each channel is intersected at least once by another channel. Preferably the channels 6 also provide a series of intersections 9 at or immediately downstream of the downstream face of the baffle. As shown, the channels 6 are open and are formed integrally by machining or by removable inserts such as pins (8), Fig. 3 (not reproduced). Alternatively they may be formed by passages passing through the baffle. The latter may be formed integrally with screw-shaft 7 or comprise an interchangeable ring. Vent(s) 4 are connected to a suction unit. The invention is particularly intended for use with extruders producing plastics films for safety glass panels.
GB52353/68A 1968-02-12 1968-11-05 Improvements in or relating to Screw Extruders with Gas Removal Means Expired GB1171590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS106868 1968-02-12

Publications (1)

Publication Number Publication Date
GB1171590A true GB1171590A (en) 1969-11-19

Family

ID=5344097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52353/68A Expired GB1171590A (en) 1968-02-12 1968-11-05 Improvements in or relating to Screw Extruders with Gas Removal Means

Country Status (4)

Country Link
DE (1) DE1779231B1 (en)
FI (1) FI48168C (en)
FR (1) FR1579277A (en)
GB (1) GB1171590A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344674U (en) * 1977-08-31 1978-04-17
EP0007286A1 (en) * 1978-03-29 1980-01-23 P.W.T. Plastic World Technology Limited A method for the continuous extrusion and blowing of thin films of plastics material, in particular rigid PVC
FR2483181A1 (en) * 1980-05-29 1981-12-04 Koppers Co Inc SCREWS FOR THE EXTRUSION OF A FOOD PASTE
GB2140314A (en) * 1983-03-14 1984-11-28 Chisso Corp Process and apparatus for producing organic filler-blended resin compositions
US4729666A (en) * 1985-08-16 1988-03-08 Idemitsu Petrochemical Co., Ltd. Screw for molding thermoplastic resin having a stress relaxation section
WO2007124519A1 (en) * 2006-04-27 2007-11-08 Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.B.H. Device for degassing and filtering plastic melts

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1010208A (en) * 1973-01-11 1977-05-17 Phillips Cables Limited Process for the modification of thermoplastic material and apparatus therefor
US4173445A (en) * 1978-07-17 1979-11-06 Monsanto Company Plastics extrusion apparatus
IT1129398B (en) * 1980-12-15 1986-06-04 Comind Spa HOMOGENIZER MIXER DEVICE FOR INJECTION PRESSES AND EXTRUDERS FOR THERMOPLASTICS
ATE134563T1 (en) * 1991-08-29 1996-03-15 Helmut Bacher DEVICE FOR EXTRUDING THERMOPLASTIC PLASTIC GOODS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838794A (en) * 1957-04-08 1958-06-17 Du Pont Extrusion apparatus
NL258292A (en) * 1959-11-28 1900-01-01
NL123670C (en) * 1961-02-28 1900-01-01
US3252182A (en) * 1963-01-22 1966-05-24 Lavorazione Mat Plast Screw press for extrusion of plastics

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344674U (en) * 1977-08-31 1978-04-17
JPS5347517Y2 (en) * 1977-08-31 1978-11-14
EP0007286A1 (en) * 1978-03-29 1980-01-23 P.W.T. Plastic World Technology Limited A method for the continuous extrusion and blowing of thin films of plastics material, in particular rigid PVC
DK155579B (en) * 1978-03-29 1989-04-24 Pwt Plastic World Tech METHOD AND APPARATUS FOR CONTINUOUS EXTRUSION AND BLASTING OF THIN PLASTIC MOVIE
FR2483181A1 (en) * 1980-05-29 1981-12-04 Koppers Co Inc SCREWS FOR THE EXTRUSION OF A FOOD PASTE
GB2140314A (en) * 1983-03-14 1984-11-28 Chisso Corp Process and apparatus for producing organic filler-blended resin compositions
US4729666A (en) * 1985-08-16 1988-03-08 Idemitsu Petrochemical Co., Ltd. Screw for molding thermoplastic resin having a stress relaxation section
WO2007124519A1 (en) * 2006-04-27 2007-11-08 Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.B.H. Device for degassing and filtering plastic melts
US7866876B2 (en) 2006-04-27 2011-01-11 Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.B.H. Device for degassing and filtering plastic melts

Also Published As

Publication number Publication date
DE1779231B1 (en) 1972-05-31
FI48168C (en) 1974-07-10
FI48168B (en) 1974-04-01
FR1579277A (en) 1969-08-22

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