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GB1225669A - - Google Patents

Info

Publication number
GB1225669A
GB1225669A GB1225669DA GB1225669A GB 1225669 A GB1225669 A GB 1225669A GB 1225669D A GB1225669D A GB 1225669DA GB 1225669 A GB1225669 A GB 1225669A
Authority
GB
United Kingdom
Prior art keywords
plate
spinneret
ducts
melt
spinning
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
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 filed Critical
Publication of GB1225669A publication Critical patent/GB1225669A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
    • 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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/32—Side-by-side structure; Spinnerette packs therefor
    • 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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/34—Core-skin structure; Spinnerette packs therefor

Landscapes

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

Abstract

1,225,669. Spinneret assembly for melt spinning composite filaments. ASAHI KASEI KOGYO K.K. 20 June, 1968 [22 June, 1967], No. 29405/68. Heading B5B. A spinneret assembly for the melt spinning of composite filaments of either the conjugate type in which the components are disposed in sideby-side relationship or in eccentric sheath-core relationship is characterized in that the plane 4 in which lies the circumference of the outlet of each extrusion orifice of the spinneret plate forming part of the assembly is disposed at an acute angle to a plane normal to the spinneret axis. The spinneret assembly shown in Fig. 1 is adapted for the melt spinning of conjugate filaments and comprises a circular cover plate 10 bolted to a cylindrical housing 12 in which are located first and second intermediate plates 19 and 22 respectively and a circular spinneret plate 27 supported on the inner peripheral flange 12a of the housing. The upper surface of the cover-plate 10 is provided with a number of short externally threaded inlet pipes 15 each communicating with an inlet bore 16 machined in the cover-plate and adapted to receive the internally threaded union 17 mounted on the delivery end of the feed pipe 18 through which molten polymer is delivered from a spinning pump. All the inlet bores 16 situated on the left hand side of the vertical diametrical plane YY<SP>1</SP> of the spinneret assembly are supplied with a spinning melt which is less viscous than the spinning melt supplied to the remaining inlet bores 16. The melts after flowing through the inlet bores 16 flow through the recesses 20 and ducts 21, 21<SP>1</SP> of the plate 19. The second intermediate plate 22 is provided with an outer circle of ducts 23 and an inner circle of ducts 24. All the ducts 23 communicate with a groove 25 in the lower surface of the plate 22 and all the ducts 24 communicate with a second groove (not shown). The upper surface of the spinneret plate 27 is provided with a number of elongated recesses 28 (Figs. 1 and 2) each of which communicates with a pair of neighbouring outer and inner ducts 23 and 24, thereby constituting a number of separate " conjugating chambers " in which the two streams of melt differing from one another in viscosity meet and flow through to the inlets of the extrusion orifices 29 drilled through the spinneret plate 27. Each of the orifices 29 is situated directly below the centre of each corresponding recess 28. The underside of the spinneret plate 27 is recessed at 32 in such a manner that the plane of the outlet of each orifice 29 is at an acute angle with the flat portion of the spinneret plate recess. The less viscous melt flows through the ducts 23 and the zones of the chambers 28 and the extrusion orifices 29 which are nearer to the periphery of the spinneret plate 27 and the more viscous melt through the ducts 24 and the zones in chambers 28 and orifices 29 which are further from the periphery. Filament deflection which would otherwise be caused by the difference in the viscosities of the two melts pumped through the spinneret assembly is thereby obviated.
GB1225669D 1967-06-22 1968-06-20 Expired GB1225669A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3959367 1967-06-22

Publications (1)

Publication Number Publication Date
GB1225669A true GB1225669A (en) 1971-03-17

Family

ID=12557389

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1225670D Expired GB1225670A (en) 1967-06-22 1968-06-20
GB1225669D Expired GB1225669A (en) 1967-06-22 1968-06-20

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1225670D Expired GB1225670A (en) 1967-06-22 1968-06-20

Country Status (4)

Country Link
CH (2) CH467877A (en)
DE (2) DE1769649A1 (en)
FR (2) FR1569452A (en)
GB (2) GB1225670A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4052146A (en) * 1976-11-26 1977-10-04 Monsanto Company Extrusion pack for sheath-core filaments
JPS62156306A (en) * 1985-12-27 1987-07-11 Chisso Corp Spinneret apparatus for composite spinning

Also Published As

Publication number Publication date
FR1569452A (en) 1969-05-30
DE1760709A1 (en) 1972-01-13
GB1225670A (en) 1971-03-17
CH467879A (en) 1969-01-31
FR1569451A (en) 1969-05-30
DE1769649A1 (en) 1972-02-03
CH467877A (en) 1969-01-31

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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