GB1206111A - Improvements in or relating to methods of extrusion - Google Patents

Improvements in or relating to methods of extrusion

Info

Publication number
GB1206111A
GB1206111A GB46197/66A GB4619766A GB1206111A GB 1206111 A GB1206111 A GB 1206111A GB 46197/66 A GB46197/66 A GB 46197/66A GB 4619766 A GB4619766 A GB 4619766A GB 1206111 A GB1206111 A GB 1206111A
Authority
GB
United Kingdom
Prior art keywords
chamber
extrudate
rubber
extrusion
pneumatic
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
GB46197/66A
Inventor
Douglas Bulgin
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.)
Dunlop Co Ltd
Original Assignee
Dunlop Co Ltd
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 Dunlop Co Ltd filed Critical Dunlop Co Ltd
Priority to GB46197/66A priority Critical patent/GB1206111A/en
Priority to DE19671729631 priority patent/DE1729631A1/en
Priority to US674177A priority patent/US3527851A/en
Priority to FR124358A priority patent/FR1540793A/en
Publication of GB1206111A publication Critical patent/GB1206111A/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
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • 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
    • B29C2948/92428—Calibration, after-treatment, or cooling zone
    • 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
    • B29C2948/92447—Moulded article
    • 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
    • B29C2948/92923—Calibration, after-treatment or cooling zone
    • 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

Landscapes

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

Abstract

1,206,111. Dimensioning extrudates. DUNLOP CO. Ltd. 11 Oct., 1967 [15 Oct., 1966], No. 46197/66. Heading B5A. [Also in Division G3] To control the cross-sectional dimensions of an extrudate 3 of " rubber-like material " (see below), a chamber 1 is situated immediately downstream of an extruder 2 and is such that a fluid, at a pressure-variable from above to below ambient, may be applied substantially normally to the extrudate. The fluid may be supplied at a temperature above or below ambient. As shown, the applied pressure value is determined by a pneumatic dimension-sensing device 13 working in conjunction with an amplifier 14 and a valve 11 connectable as required to a source S of compressed air or vacuum. On the exit side of chamber 1 a channel 6 is dimensioned slightly larger than the predetermined cross-section of the extrudate so that air is throttled in the chamber and the small amount which does escape acts as a lubricant. In modifications, valve 11 may be dispensed with, with amplifier 14 directly feeding chamber 1, an electro-pneumatic circuit may be used and pneumatic device 13 may be replaced by pairs of spring-loaded rollers which are mechanically connected to a suitable transducer. If liquid is used a suitable seal is placed at the downstream end of channel 6. Chamber 1 need not be in direct contact with extruder 2 in which case a throttle or seal is provided at its upstream end. By the term " rubber-like material " is meant materials subject to dimensional change after extrusion, e.g. rubber and certain plastics. The invention particularly relates to the extrusion of tread strips for tyres.
GB46197/66A 1966-10-15 1966-10-15 Improvements in or relating to methods of extrusion Expired GB1206111A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB46197/66A GB1206111A (en) 1966-10-15 1966-10-15 Improvements in or relating to methods of extrusion
DE19671729631 DE1729631A1 (en) 1966-10-15 1967-10-10 Process for the extrusion of rubber and rubber-like material and device for carrying out the process
US674177A US3527851A (en) 1966-10-15 1967-10-10 Method for controlling the extrusion of visco-elastic material
FR124358A FR1540793A (en) 1966-10-15 1967-10-13 Improved extrusion process, and apparatus for its implementation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB46197/66A GB1206111A (en) 1966-10-15 1966-10-15 Improvements in or relating to methods of extrusion
FR124358A FR1540793A (en) 1966-10-15 1967-10-13 Improved extrusion process, and apparatus for its implementation

Publications (1)

Publication Number Publication Date
GB1206111A true GB1206111A (en) 1970-09-23

Family

ID=26180009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46197/66A Expired GB1206111A (en) 1966-10-15 1966-10-15 Improvements in or relating to methods of extrusion

Country Status (2)

Country Link
FR (1) FR1540793A (en)
GB (1) GB1206111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117311A (en) * 1982-02-16 1983-10-12 Dunlop Ltd Improvements in or relating to a method of and apparatus for extruding elastomeric components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117311A (en) * 1982-02-16 1983-10-12 Dunlop Ltd Improvements in or relating to a method of and apparatus for extruding elastomeric components

Also Published As

Publication number Publication date
FR1540793A (en) 1968-09-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees