FR2320175A1 - Extrusion nozzle for thin coatings on carrier bands - has bottom front edge designed to act as doctor - Google Patents

Extrusion nozzle for thin coatings on carrier bands - has bottom front edge designed to act as doctor

Info

Publication number
FR2320175A1
FR2320175A1 FR7624081A FR7624081A FR2320175A1 FR 2320175 A1 FR2320175 A1 FR 2320175A1 FR 7624081 A FR7624081 A FR 7624081A FR 7624081 A FR7624081 A FR 7624081A FR 2320175 A1 FR2320175 A1 FR 2320175A1
Authority
FR
France
Prior art keywords
doctor
act
extrusion nozzle
extruder
front edge
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.)
Granted
Application number
FR7624081A
Other languages
French (fr)
Other versions
FR2320175B3 (en
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of FR2320175A1 publication Critical patent/FR2320175A1/en
Application granted granted Critical
Publication of FR2320175B3 publication Critical patent/FR2320175B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
    • 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
    • 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
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Coating Apparatus (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

An extrusion nozzle for coating a band of carrier material with a plastic mass, comprises a hollow body extending across the full width of the carrier material. Fittings are attached for feeding and recycling the plastic mass through the extruder body, the bottom from edge of which is designed to act as a doctor. The distance at which the doctor is positioned from the carrier determines the width of the outlet slot of the nozzle, which is located so that the hollow cavity of the extruder noxxle is enclosed by its side walls. Coatings of magnetic dispersions less than two millimicrons thick for recording tapes, can be produced without difficulty. The forces necessary to hold the extruder down can be reduced considerably, so that much greater variations in pressure in the flow can be tolerated.
FR7624081A 1975-08-08 1976-08-06 Extrusion nozzle for thin coatings on carrier bands - has bottom front edge designed to act as doctor Granted FR2320175A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19757525191U DE7525191U (en) 1975-08-08 1975-08-08 CASTER FOR COATING STRIP-SHAPED CARRIER MATERIALS WITH COATING COMPOUND

Publications (2)

Publication Number Publication Date
FR2320175A1 true FR2320175A1 (en) 1977-03-04
FR2320175B3 FR2320175B3 (en) 1979-05-04

Family

ID=6654458

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624081A Granted FR2320175A1 (en) 1975-08-08 1976-08-06 Extrusion nozzle for thin coatings on carrier bands - has bottom front edge designed to act as doctor

Country Status (4)

Country Link
JP (1) JPS6010785B2 (en)
DE (1) DE7525191U (en)
FR (1) FR2320175A1 (en)
NL (1) NL7608775A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377235A1 (en) * 1977-01-17 1978-08-11 Ibm DEVICE FOR APPLYING A VISCOUS FLUID TO A SUBSTRATE
CN116273671A (en) * 2023-03-23 2023-06-23 雄县舰海防水辅料有限公司 Glue spreading device for self-adhesive waterproof coiled material film production and use method thereof

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2751371A1 (en) * 1977-11-17 1979-05-23 Basf Ag Applicator for applying magnetic dispersion to foil - has surface element with stripping edge in front of coating knife to retain foreign bodies
JPS55147168A (en) * 1979-05-04 1980-11-15 Asahi Chem Ind Co Ltd Continuous coating method and apparatus for fluidal composition on water-absorbable plate
JPS6053674B2 (en) * 1980-07-08 1985-11-27 富士写真フイルム株式会社 Application method
JPS6064662A (en) * 1983-09-19 1985-04-13 Fuji Photo Film Co Ltd Coating method
JPH0248395Y2 (en) * 1985-04-25 1990-12-19
JPS6290495U (en) * 1985-11-23 1987-06-10
JPS62158683A (en) * 1985-12-26 1987-07-14 出光石油化学株式会社 Disk container
JPS62168881A (en) * 1986-01-09 1987-07-25 出光石油化学株式会社 Disks housing
JP3393566B2 (en) * 1995-03-31 2003-04-07 花王株式会社 Application method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377235A1 (en) * 1977-01-17 1978-08-11 Ibm DEVICE FOR APPLYING A VISCOUS FLUID TO A SUBSTRATE
CN116273671A (en) * 2023-03-23 2023-06-23 雄县舰海防水辅料有限公司 Glue spreading device for self-adhesive waterproof coiled material film production and use method thereof
CN116273671B (en) * 2023-03-23 2023-08-04 雄县舰海防水辅料有限公司 Glue spreading device for self-adhesive waterproof coiled material film production and use method thereof

Also Published As

Publication number Publication date
NL7608775A (en) 1977-02-10
FR2320175B3 (en) 1979-05-04
JPS6010785B2 (en) 1985-03-20
JPS5222039A (en) 1977-02-19
DE7525191U (en) 1975-12-04

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