GB1144863A - Method of producing webs of material of uniform longitudinal thickness - Google Patents

Method of producing webs of material of uniform longitudinal thickness

Info

Publication number
GB1144863A
GB1144863A GB17057/67A GB1705767A GB1144863A GB 1144863 A GB1144863 A GB 1144863A GB 17057/67 A GB17057/67 A GB 17057/67A GB 1705767 A GB1705767 A GB 1705767A GB 1144863 A GB1144863 A GB 1144863A
Authority
GB
United Kingdom
Prior art keywords
slot orifice
pressure
slot
nip
longitudinal thickness
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
GB17057/67A
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.)
KraussMaffei Extrusion GmbH
Original Assignee
Hermann Berstorff Maschinenbau Anstalt 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 Hermann Berstorff Maschinenbau Anstalt GmbH filed Critical Hermann Berstorff Maschinenbau Anstalt GmbH
Publication of GB1144863A publication Critical patent/GB1144863A/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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/35—Extrusion nozzles or dies with rollers
    • 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

1,144,863. Extrusion/rolling plastic sheets. HERMAN BERSTORFF MASCHINENBAUANSTALT G.m.b.H. 13 April, 1967 [12 Jan., 1967], No. 17057/67. Heading B5A. In the production of plastics or rubber sheets, material is screw extruded from a long slot die 4 into the nip between calendering rolls 5, 6, the pressure of material adjacent the slot orifice being measured and correlated with the speed of rolls 5, 6 to maintain this pressure and hence maintain the thickness of the sheet at a predetermined value. As shown, a pressure gauge 7 is placed immediately upstream of the slot orifice and is connected to roll drive 9 via a regulator 8. Alternatively, the gauge may be placed between the slot orifice and the roll nip. The slot orifice is fed via a diverging passageway (4a), Fig. 2 (not shown).
GB17057/67A 1967-01-12 1967-04-13 Method of producing webs of material of uniform longitudinal thickness Expired GB1144863A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0090702 1967-01-12

Publications (1)

Publication Number Publication Date
GB1144863A true GB1144863A (en) 1969-03-12

Family

ID=6985427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17057/67A Expired GB1144863A (en) 1967-01-12 1967-04-13 Method of producing webs of material of uniform longitudinal thickness

Country Status (1)

Country Link
GB (1) GB1144863A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806289A (en) * 1972-04-05 1974-04-23 Kimberly Clark Co Apparatus for producing strong and highly opaque random fibrous webs
FR2566699A1 (en) * 1984-06-30 1986-01-03 Berstorff Gmbh Masch Hermann DEVICE FOR THE PRODUCTION OF HEADLIGHTS OF TIRES OR OTHER PROFILES OR BANDS
FR2630961A1 (en) * 1988-05-06 1989-11-10 Michelin & Cie PROCESS AND APPARATUS FOR COATING RUBBER THREADS IN PARALLEL AND THUS PRODUCING A TABLECLOTH
DE4012695A1 (en) * 1990-04-20 1991-10-24 Az Formen & Maschbau Gmbh BINDING RUBBER EXTRUDERS
US5387303A (en) * 1990-07-18 1995-02-07 Bridgestone Corporation Method and apparatus for forming rubber sheet having cords therein
WO2004052630A1 (en) * 2002-12-12 2004-06-24 Berstorff Gmbh Calendering system for the production of webs of steel cable carcass

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806289A (en) * 1972-04-05 1974-04-23 Kimberly Clark Co Apparatus for producing strong and highly opaque random fibrous webs
FR2566699A1 (en) * 1984-06-30 1986-01-03 Berstorff Gmbh Masch Hermann DEVICE FOR THE PRODUCTION OF HEADLIGHTS OF TIRES OR OTHER PROFILES OR BANDS
FR2630961A1 (en) * 1988-05-06 1989-11-10 Michelin & Cie PROCESS AND APPARATUS FOR COATING RUBBER THREADS IN PARALLEL AND THUS PRODUCING A TABLECLOTH
WO1989010834A1 (en) * 1988-05-06 1989-11-16 Compagnie Generale Des Etablissements Michelin - M Process and, device for applying a rubber coating on wires unwound in parallel to produce a sheet
DE4012695A1 (en) * 1990-04-20 1991-10-24 Az Formen & Maschbau Gmbh BINDING RUBBER EXTRUDERS
DE4012695C2 (en) * 1990-04-20 2001-08-02 Az Formen & Maschbau Gmbh Connective rubber extruder
US5387303A (en) * 1990-07-18 1995-02-07 Bridgestone Corporation Method and apparatus for forming rubber sheet having cords therein
WO2004052630A1 (en) * 2002-12-12 2004-06-24 Berstorff Gmbh Calendering system for the production of webs of steel cable carcass

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