GB1235694A - Improvements in or relating to the continuous manufacture of extrusions - Google Patents

Improvements in or relating to the continuous manufacture of extrusions

Info

Publication number
GB1235694A
GB1235694A GB24713/68A GB2471368A GB1235694A GB 1235694 A GB1235694 A GB 1235694A GB 24713/68 A GB24713/68 A GB 24713/68A GB 2471368 A GB2471368 A GB 2471368A GB 1235694 A GB1235694 A GB 1235694A
Authority
GB
United Kingdom
Prior art keywords
baffle
diaphragm
conduit
pressure
extrusion
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
GB24713/68A
Inventor
Olav Edward Koster
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.)
Akzo NV
Original Assignee
Akzo NV
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 Akzo NV filed Critical Akzo NV
Publication of GB1235694A publication Critical patent/GB1235694A/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
    • B29C48/92—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
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92466—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
    • 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
    • B29C2948/92514—Pressure
    • 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
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • 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
    • B29C2948/92961—Auxiliary unit, e.g. for external melt filtering, re-combining or transfer between units
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Landscapes

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

Abstract

1,235,694. Extrusion moulding machines. AKZO N.V. 23 May, 1968 [23 May, 1967], No. 24713/68. Heading B5A. An extrusion moulding machine comprises a pressure-responsive device 27 adjacent the extrusion orifice and a valve 4 having a baffle 8 situated in the flow path of plasticized material and drivingly coupled to a diaphragm 20, forces on the diaphragm due to the baffle being counteracted by compressed gas delivered via conduit 23, an electrically controlled pressurecontrol system coupled with device 27 regulating the supply of compressed gas so as to tend to keep the sensed pressure constant. Baffle 8 is coupled to diaphragm 20 via a silicone grease plug which coacts with a piston 18 in a cylinder 17. In operation, device 27 converts pressure values into electrical signals which are conveyed to electromagnetic switches 30, Fig. 2, the sensing of a sufficiently high pressure creating an electric signal sufficient to operate the switches and to change the feed of compressed gas to conduit 23 from path a to path b. Valves 35, 36 are set at different values, valve 36 allowing a lower pressure to exist above diaphragm 20 which results in a rise of piston 18 and such movement is transmitted to baffle 8 by the silicone grease plug in conduit 10 to thereby reduce the flow of material to the extrusion orifice. Additionally a valve oscillator 24 is provided which maintains a relative high frequency, e.g. 30-60 c.p.m., but low amplitude gas pressure change, e.g. 0À1-0À2 atmos. above diaphragm 20. Such oscillation is transmitted to baffle 8 whose responsivity is thereby increased. Downstream of the die orifice is affixed, via a heat insulating ring 13, a cooling and sizing device 14, 15, Fig. 1. A grease gun 25, 26 communicates with conduit 10. The extrusion of one or more bars and sheets is mentioned with, in the case of a sheet, the possible use of a plurality of baffles 8. Polyamide resin is mentioned as an example of extrudable material.
GB24713/68A 1967-05-23 1968-05-23 Improvements in or relating to the continuous manufacture of extrusions Expired GB1235694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL676707150A NL150372B (en) 1967-05-23 1967-05-23 DEVICE FOR THE CONTINUOUS MANUFACTURE OF PLASTIC PROFILES.

Publications (1)

Publication Number Publication Date
GB1235694A true GB1235694A (en) 1971-06-16

Family

ID=19800195

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24713/68A Expired GB1235694A (en) 1967-05-23 1968-05-23 Improvements in or relating to the continuous manufacture of extrusions

Country Status (10)

Country Link
JP (1) JPS4835928B1 (en)
AT (1) AT306348B (en)
BE (1) BE715531A (en)
DE (1) DE1778683C3 (en)
DK (1) DK135707B (en)
ES (2) ES354206A1 (en)
FR (1) FR1569260A (en)
GB (1) GB1235694A (en)
NL (1) NL150372B (en)
SE (1) SE337906B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242645A (en) * 1990-03-27 1991-10-09 Japan Steel Works Ltd Controlling extrusion pressure around an annular nozzle of a multilayer parison extrusion die
US6231082B1 (en) 1997-11-07 2001-05-15 Documotion Research, Inc. Tamper-evident form for securely carrying information
CN112689554A (en) * 2018-09-14 2021-04-20 Ａｇｃ株式会社 Method for producing pellet, and ion exchange membrane

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3502019C2 (en) * 1985-01-23 1994-04-14 Hoechst Ag Method and device for stabilizing the pressure of a thermoplastic melt

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242645A (en) * 1990-03-27 1991-10-09 Japan Steel Works Ltd Controlling extrusion pressure around an annular nozzle of a multilayer parison extrusion die
GB2242645B (en) * 1990-03-27 1994-03-02 Japan Steel Works Ltd Multilayer parison extruder
US6231082B1 (en) 1997-11-07 2001-05-15 Documotion Research, Inc. Tamper-evident form for securely carrying information
CN112689554A (en) * 2018-09-14 2021-04-20 Ａｇｃ株式会社 Method for producing pellet, and ion exchange membrane
CN112689554B (en) * 2018-09-14 2023-05-16 Ａｇｃ株式会社 Process for producing pellet, and ion exchange membrane

Also Published As

Publication number Publication date
DK135707B (en) 1977-06-13
FR1569260A (en) 1969-05-30
NL150372B (en) 1976-08-16
AT306348B (en) 1973-04-10
DK135707C (en) 1977-11-14
DE1778683C3 (en) 1978-09-28
SE337906B (en) 1971-08-23
DE1778683B2 (en) 1978-01-12
DE1778683A1 (en) 1971-08-12
ES354206A1 (en) 1969-11-01
ES354216A1 (en) 1969-11-01
JPS4835928B1 (en) 1973-10-31
NL6707150A (en) 1968-11-25
BE715531A (en) 1968-10-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee