US3225383A - Spinneret distribution plate - Google Patents

Spinneret distribution plate Download PDF

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Publication number
US3225383A
US3225383A US297328A US29732863A US3225383A US 3225383 A US3225383 A US 3225383A US 297328 A US297328 A US 297328A US 29732863 A US29732863 A US 29732863A US 3225383 A US3225383 A US 3225383A
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US
United States
Prior art keywords
spinneret
plate
distribution plate
filter block
cavity
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 - Lifetime
Application number
US297328A
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English (en)
Inventor
Jr James Stanley Cobb
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US297328A priority Critical patent/US3225383A/en
Priority to LU46603D priority patent/LU46603A1/xx
Priority to BE650920D priority patent/BE650920A/xx
Priority to FR982878A priority patent/FR1403349A/fr
Priority to DE19641435638 priority patent/DE1435638A1/de
Priority to GB30938/64A priority patent/GB1017914A/en
Application granted granted Critical
Publication of US3225383A publication Critical patent/US3225383A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/06—Distributing spinning solution or melt to spinning nozzles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/217—Spinnerette forming conjugate, composite or hollow filaments

Definitions

  • the polymer extruded-near the circumference of the spinneret plate is extruded more slowly and solidifies rnore rapidly in the filament than does the polymer extruded near the center of the plate, resulting in nonuniformities in the yarn properties and denier.
  • Denier variations not only show up in the final fa ric but also are troublesome during its fabrication in that heavy denier filaments in a group of filaments, i.e., in a thread, do not follow the same path as the lighter filaments when going around guides or pins, but loop out. These loops often catch and break, necessitating a shutdown of the fabrication process.
  • a more particular objective is the provision of an improved spinneret distribution system which compensates for a temperature gradient across the spinneret plate.
  • an imperforate distribution plate sandwiched between the filter block and spinneret plate of a spinneret pack and provided with distribution channels in its upper face leading to or near the periphery of the plate, tapered cavities in the bottom face and opposed slots at or near the periphery, each slot connecting some or all of the distribution channels with a cavity.
  • Each cavity extends from its slot toward the opposed slot and has its maximum depth adja cent the slot with which it communicates.
  • FIGURE 1 is a cross sectional view of a spinneret assembly including the distribution plate of the present invention
  • FIG. 1a is a fragmentary enlargement of the distribution plate and filter block of FIG. 1;
  • FIG. 2 is a view along line 11-11 of FIG. 1, i.e., a bottom view of the pack assembly with the spinneret plate and holding ring removed;
  • FIG. 3 is a similar view of a second embodiment
  • FIG. 4 is a cross sectional view of a spinneret assembly including a different filter block and a third embodiment of the distribution plate.
  • FIG. 5 is a view along line V-V of FIG. 4.
  • FIGS. 1, 2 includes, as components, a spinneret plate 10 and a distribution plate 12 attached to a filter block 14 by bolts 16. This assembly is held in position against a spinning machine 18 by a conventional holding ring 20.
  • Filter block 14 has two identical filtration cavities 22, each containing the usual screens, sand, etc. (not shown), which function to filter separate metered streams of molten polymer received from conduits 23, 24 in machine 18. Filtered polymer is discharged from cavities 22 through holes 25, 26, respectively.
  • spinneret plate 10 is provided with four different groups of aligned holes 28, each of which spins a thread of three filaments. Where additional holes are provided, they may be arranged in two or more staggered rows in order to insure elfective quenching.
  • distribution plate 12 In its upper face, distribution plate 12 has two branched channel systems 29, 30 through which the separate metered streams flow from holes 25, 25 outwardly to opposed slots 31, 32 and thence to tapered cavities 2 35. As illustrated, slots 31, 32 are opposed and located adjacent the periphery of plate 12. Each tapered cavity has its maximum depth at and is approximately coextensive in width with its associated slot. For example, cavity 35 has its maximum depth beneath slot 32 and tapers downwardly to a minimum depth adjacent the center of plate 12.
  • FIGS. 1, 2 The operation and utility of the embodiment shown in FIGS. 1, 2 will be aparent from the following example.
  • Example I Nylon is melted, brought to a temperature of 280- 295 C. and then pumped in separate metered streams through conduits 23, 24- to the filtration cavities 22.
  • the channels, slots and tapered cavities in distribution plate 12 define separate flow paths between filter block holes 25, 2e and the associated spinneret holes 28.
  • Spinneret plate Eli? is designed to spin four threads of 20 denier (2.2 Tex), seven filaments per thread. Thus, each metered stream is divided into two threads, each having seven filaments, each filament being slightly less than three denier per filament.
  • the channels 29, 36 are 0.156 inch wide and 0.031 inch deep.
  • the tapered cavities 34, 35 are 0.75 inch Wide by 1.375 inch long, with a minimum depth of 0.027 inch and an angle of taper of 452.
  • each group of filaments be fed by a separate metered stream from a metering pump.
  • Using the improved apparatus of this invention it has been found possible to divide and equally distribute a metered stream into two or more threads and still achieve better denier uniformity between the two threads.
  • the channel systems 29', 30 are branched to a significantly lesser extent than those of FIG. 2 in order to compensate for the greater relative width of tapered cavities 34', 35, leaving a wider groove above and beyond the lengths of slots 31, 32'. It is important that the velocity of polymer flowing through each slot be the same at all points, i.e., the velocity at the center should be the same as the velocity at the two ends. In the embodiment shown, with eight distribution holes 26', the projections 33 direct the polymer flow so that there is a uniform velocity through the length of slot 32'. This modification is required when cavity width equals or exceeds cavity length.
  • FIGS. 4 and 5 An adaptation of the distribution principles of the present invention to a spinneret assembly in which the filter block has but a single cavity has been illustrated in FIGS. 4 and 5.
  • a filter block 42 has nine distribution holes 44 which direct polymer from a filter cavity 46 to a circular collection space 48. Any variations in polymer fiow through the filtering means are overcome by feeding all the polymer to the collection space 48.
  • a distribution plate 50 Directly below the sandholder 42 is a distribution plate 50 and a spinneret plate 52.
  • the elements 42, 50, '52 and appropriate gaskets are held together by a ring 53 which has an upper extension (not shown) threaded into the spinning machine.
  • Channel 54 is in the otherwise fiat face of distribution plate 50 which is adjacent filter block 42 and the tapered cavities 56 are in the opposite face, i.e., adjacent the spinneret plate 52.
  • Each branch of channel 54 has the same width as each tapered cavity 56.
  • Slots 58 near the outer periphery, connect the opposed branches of channel 54 with the tapered cavities 56.
  • the maximum height of each tapered cavity 56 is at its outermost extremity.
  • the spinneret plate 52 has fourteen holes 60, of equal size and arranged in a single row. The fourteen monofilaments are quenched, collected and wound-up on individual packages in accordance with known procedures. Excellent denier uniformity is obtained.
  • polymer is metered to the filter cavity 46, directed into the collection space 48 by the distribution holes 44, split into two flows, one through the righthand branch of channel 54 and the other through its lefthand branch, through opposed slots 58, and finally distributed to the holes 60 through the tapered cavities 56.
  • Example 11 The apparatus and process of Example I were used to spin four threads of 4013 yarn from two metered streams. The spinning throughput was varied i1()% and there was no significant difference in denier between the threads.
  • a spinneret assembly comprising sandwiched filter block, distribution plate and spinneret plate elements, said filter block and spinneret plate elements having spaced flow holes, said distribution plate being provided with a pair of opposed slots adjacent its periphery, channels in the upper face and a pair of tapered cavities in the lower face thereof, each cavity tapering downwardly from a maximum depth at its slot, said channels, slots and cavities defining separate flow paths between the filter block and spinneret plate holes.
  • each cavity extends from a slot toward the opposed slot and has its maximum depth and width at its slot.
  • a spinneret assembly comprising filter block and spinneret plate elements provided with spaced flow holes and a distribution plate sandwiched between said elements, said distribution plate being imperforate except for a pair of spaced opposed slots, there being channels and a pair of cavities in the respective upper and lower faces of said distribution plate, each cavity extending from one of said slots toward the opposed slot and being tapered from a maximum depth at said one slot, said channels, slots and cavities defining separate flow paths between the filter block and spinneret plate holes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US297328A 1963-07-24 1963-07-24 Spinneret distribution plate Expired - Lifetime US3225383A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US297328A US3225383A (en) 1963-07-24 1963-07-24 Spinneret distribution plate
LU46603D LU46603A1 (xx) 1963-07-24 1964-07-23
BE650920D BE650920A (xx) 1963-07-24 1964-07-23
FR982878A FR1403349A (fr) 1963-07-24 1964-07-24 Filière
DE19641435638 DE1435638A1 (de) 1963-07-24 1964-07-24 Spinnduesenanordnung
GB30938/64A GB1017914A (en) 1963-07-24 1964-08-04 Spinneret assembly for melt spinning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US297328A US3225383A (en) 1963-07-24 1963-07-24 Spinneret distribution plate

Publications (1)

Publication Number Publication Date
US3225383A true US3225383A (en) 1965-12-28

Family

ID=23145849

Family Applications (1)

Application Number Title Priority Date Filing Date
US297328A Expired - Lifetime US3225383A (en) 1963-07-24 1963-07-24 Spinneret distribution plate

Country Status (6)

Country Link
US (1) US3225383A (xx)
BE (1) BE650920A (xx)
DE (1) DE1435638A1 (xx)
FR (1) FR1403349A (xx)
GB (1) GB1017914A (xx)
LU (1) LU46603A1 (xx)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457342A (en) * 1965-12-16 1969-07-22 Ici Ltd Method and apparatus for spinning heterofilaments
US3469279A (en) * 1963-10-19 1969-09-30 British Nylon Spinners Ltd Spinneret for heterofilaments
US3538544A (en) * 1968-05-09 1970-11-10 Du Pont Spinneret assembly for composite filaments
US3659988A (en) * 1970-02-18 1972-05-02 Phillips Petroleum Co Bicomponent distribution plate of a spinneret assembly
US3716317A (en) * 1971-04-01 1973-02-13 Fiber Industries Inc Pack for spinning heterofilament fibers
US3963406A (en) * 1975-06-20 1976-06-15 E. I. Du Pont De Nemours And Company Spinneret assembly for multifilament yarns
US5147197A (en) * 1990-12-26 1992-09-15 Basf Corporation Sealing plate for a spinnerette assembly
US5397227A (en) * 1990-12-26 1995-03-14 Basf Corporation Apparatus for changing both number and size of filaments
US5513973A (en) * 1991-04-25 1996-05-07 Barmag Ag Melt spinning apparatus
CN105316777A (zh) * 2014-07-24 2016-02-10 江苏天地化纤有限公司 一种纺丝生产用喷丝组合装置
CN105803548A (zh) * 2014-12-31 2016-07-27 大连华阳新材料科技股份有限公司 双组份混合纺纺丝组件
US20160376728A1 (en) * 2015-06-25 2016-12-29 Manuel Torres Martinez Extrusion head for generating filaments, extrusion installation and method using said extrusion head

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4514350A (en) 1982-09-23 1985-04-30 Celanese Corporation Method for melt spinning polyester filaments
CN103993368A (zh) * 2014-05-22 2014-08-20 徐伯琴 熔法纺丝喷丝板

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385856A (en) * 1943-10-30 1945-10-02 Du Pont Large rectangular spinneret
US2398729A (en) * 1943-06-29 1946-04-16 American Viscose Corp Filament extrusion device
US2971219A (en) * 1956-08-14 1961-02-14 Du Pont Mixer distribution plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2398729A (en) * 1943-06-29 1946-04-16 American Viscose Corp Filament extrusion device
US2385856A (en) * 1943-10-30 1945-10-02 Du Pont Large rectangular spinneret
US2971219A (en) * 1956-08-14 1961-02-14 Du Pont Mixer distribution plate

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469279A (en) * 1963-10-19 1969-09-30 British Nylon Spinners Ltd Spinneret for heterofilaments
US3457342A (en) * 1965-12-16 1969-07-22 Ici Ltd Method and apparatus for spinning heterofilaments
US3538544A (en) * 1968-05-09 1970-11-10 Du Pont Spinneret assembly for composite filaments
US3659988A (en) * 1970-02-18 1972-05-02 Phillips Petroleum Co Bicomponent distribution plate of a spinneret assembly
US3716317A (en) * 1971-04-01 1973-02-13 Fiber Industries Inc Pack for spinning heterofilament fibers
US3963406A (en) * 1975-06-20 1976-06-15 E. I. Du Pont De Nemours And Company Spinneret assembly for multifilament yarns
US5147197A (en) * 1990-12-26 1992-09-15 Basf Corporation Sealing plate for a spinnerette assembly
US5397227A (en) * 1990-12-26 1995-03-14 Basf Corporation Apparatus for changing both number and size of filaments
US5513973A (en) * 1991-04-25 1996-05-07 Barmag Ag Melt spinning apparatus
CN105316777A (zh) * 2014-07-24 2016-02-10 江苏天地化纤有限公司 一种纺丝生产用喷丝组合装置
CN105803548A (zh) * 2014-12-31 2016-07-27 大连华阳新材料科技股份有限公司 双组份混合纺纺丝组件
US20160376728A1 (en) * 2015-06-25 2016-12-29 Manuel Torres Martinez Extrusion head for generating filaments, extrusion installation and method using said extrusion head
US10472737B2 (en) * 2015-06-25 2019-11-12 Manuel Torres Martinez Extrusion head for generating filaments, extrusion installation and method using said extrusion head

Also Published As

Publication number Publication date
LU46603A1 (xx) 1964-09-29
DE1435638A1 (de) 1969-02-27
GB1017914A (en) 1966-01-26
FR1403349A (fr) 1965-06-18
BE650920A (xx) 1964-11-16

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