GB857168A - A melt extrusion apparatus - Google Patents

A melt extrusion apparatus

Info

Publication number
GB857168A
GB857168A GB10573/58A GB1057358A GB857168A GB 857168 A GB857168 A GB 857168A GB 10573/58 A GB10573/58 A GB 10573/58A GB 1057358 A GB1057358 A GB 1057358A GB 857168 A GB857168 A GB 857168A
Authority
GB
United Kingdom
Prior art keywords
core
fine
gauze
sand
pack
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
GB10573/58A
Inventor
Eric Ivan Riseley
Antony Canham Banks
Wilfred Machin
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB10573/58A priority Critical patent/GB857168A/en
Priority to FR791038A priority patent/FR1228424A/en
Publication of GB857168A publication Critical patent/GB857168A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/10—Filtering or de-aerating the spinning solution or melt
    • D01D1/106—Filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/69—Filters or screens for the moulding material
    • 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
    • B29C48/254—Sealing means
    • B29C48/2545—Sealing means for filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

<PICT:0857168/IV(a)/1> In melt-spinning apparatus of the type wherein molten thermo-plastic polymer is pumped through a pack containing a filter bed located above a spinneret, the filter bed comprises, in combination, an inert porous casing containing a filling of fine inert granular material around an inert core which allows the passage of molten polymer to the spinneret, the external area of the inlet surface of the filter bed exceeding the area of the transverse section of the inert porous casing. The casing may comprise a stainless steel wire gauze cylinder which may be crimped in a continuous series of vertical corrugations extending the full height of the cylinder, and the corrugated casing may fit just inside the body of the pack. The fine granular material may comprise metal particles, alumina or sieved sand. The core may comprise coarse granular material such as coarse sand contained within a stainless steel gauze, or a plug of sintered metal particles such as metal balls each of about 1/32 inch diameter. Alternatively the core may be non-porous and may be provided with peripheral vertical grooves, the grooved surface being covered by a close fitting layer of fine inert porous material such as fine mesh stainless steel gauze. As shown a pack body 1 contains a spinneret 2 supported by an aluminium gasket 3 on a lip 4. A melt distributor plate 5 rests on the spinneret 2 and supports a sintered metal porous cylindrical core 6. An aluminium gasket 7 makes a melt-tight seal between the core 6, the plates 5 and the sidewall of the pack 1. A cylinder of corrugated stainless steel 100 mesh gauze 8 rests on the gasket 7 and the space between the gauze 8 and the core 6 is filled with fine sieved sand 9, this sand also covering the top of the core to a depth of a quarter of an inch. The molten polymer enters the pack body and flows through the sand in the direction of the arrows.
GB10573/58A 1958-04-02 1958-04-02 A melt extrusion apparatus Expired GB857168A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB10573/58A GB857168A (en) 1958-04-02 1958-04-02 A melt extrusion apparatus
FR791038A FR1228424A (en) 1958-04-02 1959-04-02 Apparatus for extruding molten masses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10573/58A GB857168A (en) 1958-04-02 1958-04-02 A melt extrusion apparatus

Publications (1)

Publication Number Publication Date
GB857168A true GB857168A (en) 1960-12-29

Family

ID=9970347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10573/58A Expired GB857168A (en) 1958-04-02 1958-04-02 A melt extrusion apparatus

Country Status (2)

Country Link
FR (1) FR1228424A (en)
GB (1) GB857168A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295161A (en) * 1965-03-12 1967-01-03 Mott Metallurg Corp Equipment for producing synthetic polymer fibers

Also Published As

Publication number Publication date
FR1228424A (en) 1960-08-29

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