GB1083240A - Spinneret - Google Patents
SpinneretInfo
- Publication number
- GB1083240A GB1083240A GB3637066A GB3637066A GB1083240A GB 1083240 A GB1083240 A GB 1083240A GB 3637066 A GB3637066 A GB 3637066A GB 3637066 A GB3637066 A GB 3637066A GB 1083240 A GB1083240 A GB 1083240A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polymer
- spinneret
- plate
- holes
- supply
- 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
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
1,083,240. Spinneret. E. I. DU PONT DE NEMOURS & CO. Aug. 15, 1966 [Aug. 25, 1965], No. 36370/66. Heading B5B. A spinneret assembly for producing conjugate filaments of two or more components comprises a spinneret plate 12 having a downstream face and an upstream face, a meter plate 14 having a downstream face and an upstream face, a plurality of supply sources 34, 36, and a means for supplying polymers to each of said supply sources, characterized in that (a) said spinneret plate 12 has one or more nozzles 20 located therein, each of said nozzles having an orifice 22 at the downstream face of said spinneret plate and a large entrance hole 24 at the upstream face of said spinneret plate; (b) the downstream face of said meter plate 14 is juxtaposed to the upstream face of said spinneret plate; (c) a plurality of expansion chambers 26, 27 are located in the downstream face of said meter plate, two or more of said expansion chambers being positioned above each of said entrance holes 24 and in communicating relationship therewith; (d) the supply sources 34, 36 are located upstream of said expansion chambers; and (e) a metering hole 28 connects each expansion chamber to a supply source. The supply sources may, as shown, be chambers 38, 44 located in the downstream face of a sand-holder 16, said sandholder being positioned upstream of the metering plate 14, and the downstream face of said sandholder being juxtaposed to the upstream face of said meter plate. Alternatively, the supply sources may be chambers in the upstream face of the metering plate. Preferably, as shown, two of said expansion chambers 26, 27 are positioned above each of said entrance holes 24. As shown, supply chamber 30 is an annular cavity in the upstream face of meter plate 14, and supply chamber 32 is a similar but smaller annular cavity concentric with supply chamber 30. Alternatively the supply chambers can be a number of circular holes. In modifications, the supply chambers 30 and 32 may be eliminated, or the grooves 38 and 44. Another variation is to eliminate all the supply chambers and grooves 30, 32, 38 and 44 and have holes 40 feed directly to metering holes 28 and holes 42 and 43 feed directly to metering holes 29. In operation, filtration means such as sand or screens are inserted in the central cavity 34, and sand is inserted in the sand-holder 36. In operation, polymer F is supplied to central cavity 34, and leaves through a plurality of holes 42 and 43 which feed the annular groove 44, which is in a matched relationship with supply chamber 32. Polymer F is then metered to each individual spinning nozzle by metering hole 29. Polymer is forced through the small diameter metering hole 29 as a high velocity jet, but when this jet reaches expansion chamber 27, of relatively large diameter, the velocity of the polymer is reduced and the polymer now moves at a low rate of speed from the expansion chamber into entrance hole 24. In a similar manner, polymer S is supplied to annular cavity 36, which is filled with sand or screens so as to filter the polymer S in a similar manner as polymer F is filtered by sand or screens in cavity 34. The polymer S is then supplied through holes 40 into annular cavity 38 and supply chamber 30, then through metering hole 28 into another expansion chamber 26. Thus polymer S is fed into entrance hole 24 as a slow moving stream. Thus the two polymers F and S are brought together as slow-moving streams in a side-byside relationship. Since they are slow moving, this greatly reduces the tendency for mixing, especially in the high-viscosity polymers used to form synthetic filaments. The two side-byside polymer streams are then brought to an increasing velocity by the shape of the bottom of the spinneret nozzle and issue from orifice 22 in the form of a high-velocity jet. At this point there is no tendency for the polymers to intermix as they have already assumed the desired side-by-side relationship. The filament crosssection obtained with the spinneret assembly of the invention is shown in Fig. 2. While spinneret assembly 10 is for two-component sideby-side filaments, more than two components or two polymers may be used. Further, while the pack illustrated provides for a circular pattern of spinning nozzles 20 on the spinneret plate 12, and the various holes and cavities in meter plate 14 and spinneret plate 12 and sand-holder 16 are located accordingly, it is possible to use the same basic concept for a spinneret having the spinning nozzles aligned in rows.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US482412A US3320633A (en) | 1965-08-25 | 1965-08-25 | Apparatus for forming two component yarns |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1083240A true GB1083240A (en) | 1967-09-13 |
Family
ID=23915969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3637066A Expired GB1083240A (en) | 1965-08-25 | 1966-08-15 | Spinneret |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1660575B2 (en) |
GB (1) | GB1083240A (en) |
NL (1) | NL6611836A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5707735A (en) * | 1996-03-18 | 1998-01-13 | Midkiff; David Grant | Multilobal conjugate fibers and fabrics |
CN110106560A (en) * | 2019-05-22 | 2019-08-09 | 张家港市帝达机械有限公司 | One-step molded multilayer three-D net structure body and its spinneret die |
-
1966
- 1966-08-15 GB GB3637066A patent/GB1083240A/en not_active Expired
- 1966-08-23 NL NL6611836A patent/NL6611836A/xx unknown
- 1966-08-25 DE DE19661660575 patent/DE1660575B2/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5707735A (en) * | 1996-03-18 | 1998-01-13 | Midkiff; David Grant | Multilobal conjugate fibers and fabrics |
CN110106560A (en) * | 2019-05-22 | 2019-08-09 | 张家港市帝达机械有限公司 | One-step molded multilayer three-D net structure body and its spinneret die |
Also Published As
Publication number | Publication date |
---|---|
DE1660575B2 (en) | 1976-07-22 |
NL6611836A (en) | 1967-02-27 |
DE1660575A1 (en) | 1971-04-08 |
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