DE1660575A1 - Spinneret assembly - Google Patents

Description

The invention relates to a spinneret assembly sur Manufacture of standardized threads.

Threads consisting of two or more co-components are known. Such threads are duroh extruding the various Components from the spinneret arrangement side by side or in an eccentrically arranged »from shell and core established distribution. The components are usually chosen in such a way that they adhere to different buttocks have »when the pad is heated to a relaxed state, whereby a crimped fiber can be created.

In U.S. Patent 3 11? 906 is a play dune arrangement sloped »welohe to the diffusion of threads on the side Side lying components is used. Downstream of this

1 0 9 ^! i 5/1 9 1 9

^BATH

P 40 260 L

or other similar devices are processed Difficulties arise. These difficulties are based on that when spinning, one polymer flows around the other and forms a discontinuous partial coating. These Partial coating tends to rip off small particles or splinters or deposits of the polymer. These deposits depend on the processing plant., for example the Thread guides, nozzles, cross guide mechanisms: smen and the like, and ultimately cause the threadline to break off. Such deposits do not form if any in general flat interface between the two polymers.

Compound threads with a partial sheath split not getting clean when a split is desired to improve the aesthetic properties of a fabric » Its generally flat dividing surface between the adjacent areas ->? Ά located elements avoids such difficulties »

Another one described in the said I SA patents ekri ft Difficulty encountered in spinneret assembly is that they are arranged at very precise angles Holes are required so that the interface of the two polymers in all of a single spinneret order exiting threads is the same. This causes manufacturing difficulties.

Accordingly, the invention provides an improved spinneret assembly for generating side-by-side adjacent elements within a fat ens with a general plane fringe between the two p < lymeren.Dle invention creates a spinning nozzle arrangement which is proportionate is easy and cheap.

BATH ORIGINAL

$ 10. 15/1919

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P 40 260. ^

The invention consists in a spinneret; nan order to manufacture composite filaments of two or more polymers with a spinneret plate, which is a downstream has located and one upstream bottle, one Metering plate, one downstream and one upstream has located surface, several Vorritaquellen and devices for supplying polymer to each of the supply sources, characterized in that * that a) the spinneret plate includes one or more nozzles, each nozzle having an opening on the downstream face of the spinner nozzle plate and a wide entrance opening on the surface upstream of the spinneret plate, b) the downstream face of the metering plate of the upstream face of the spinneret plate is present, c) several details chambers in the are arranged downstream of the metering platform, with two or more expansion chambers ™ above each of the Inlet openings and arranged to communicate with them are, d) the supply sources upstream ve a the expansion chambers and e) a metering opening for each expansion chamber connects to a torrent source. In one embodiment the spinneret arrangement is characterized in that the supply sources are chambers in the upstream surface of the Metering plate are. There are preferably two discharge chambers arranged above each inlet opening. Up another Embodiment is that the sources of betrayal in the chambers arranged downstream of a sand holder are, wherein the sand holder is arranged upstream of the metering plate and the downstream surface of the sand holder upstream surface of the metering plate is applied.

The invention is explained in more detail by way of example with the aid of the figures. It shows

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P 40 260,.

Figure 1 is a section through an assembled thread, wherein the undesired partial wrapping of one polymeia represented by the other.

FIG. 2 shows a section through an assembled Fadan, which is the desired, generally flat, burning surface has, and

FIG. 3 shows a section through the spinneret arrangement according to the invention.

As shown in Figure 3, a pin nozzle plate 12 and a metering plate 14 on a sand holder 16 by a bolt 18 attached, whereby the spinneret assembly 10 is formed. It is often desirable to use these flatten with not shown! Align the locking pin. Linen sealing rings are used, since the seal is made by using polished flanges on all adjacent surfaces. In the Spinneret plate 12 is provided a number in front of spinnerets 2C, two of which are shown slid. Each spinneret has an opening 22 on the downstream surface of the spinneret plate and an inlet opening 24 mi large diameter & n of the upstream surface of the spinneret plate. Direct Above the inlets opening 24 are: white expansion chambers 26 and 27 provided because the dargestel! te spinneret arrangement for spinning consisting of two components n <side by side Threads is suitable. If more than two polymers or two segments are desired, additional expansion chambers ^ used. These expansion chambers 26 and 27 are in the arranged downstream surface of the metering portion 14. An orifice 28 connects the expansion chamber 26 with one Polymer supply source. In the same way, the metering

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P 40 260 Γ

opening 29 the expansion chamber 27 with a second supply source. The supply can 30 is an annular cavity in the upstream surface of the Zimessplatte 14 * Die Storage chamber 32 is a similar, smaller ring-shaped one Cavity »which is arranged concentrically to the storage chamber 30. You details of the construction of the storage chambers are not important for the invention and can be made from the described annular cavities or also from a Number of circular ;, drill holes.

A circular cavity 34 with a figured shape is provided in the sand holder 16. Surround tucks h a ringförm: ger cavity 36. Located directly under the annular cavity 36 is a groove cut into the surface of the sand holder 16 33rd Several bores similar to the bore 40 connect the annular cavity 36 with the groove 38. In the same way, several bores 42 and 43 similar to the bores connect the same way. Cavity 34 with the annular groove 44.

It is noted that the so-called naturally .I is "hot certain embodiments, either the storage chambers omit 30 and 32 or the grooves 33 and 44" Another modification consists of ₍₈ 32 ,. 38 and 44 3O) omit all the supply chambers and grooves so that the bores 40 convey directly into the suraise openings 28 and the bores 42 convey directly into the metering openings 29. The following is the setup for feeding the polymers

In operation, polymer 1 is fed via central cavity 34. Formally it is ®in filter medium, such as Sana or Sieves or a losMnatflon diaeer both _% is $? N bit tier et * cavity 34 watered. The polymer is loaded in the middle of Bohlraua 34

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P40 £ 260

through the ground through several bores 42 and 43 »which in the annular groove 44 open. Let them ring groove 44 to the pantry 32 adapted. The polymer? becomes eodani duroh a metering opening 29 measured at each individual point or spinneret. Since a certain amount of polymer is fed through a positive displacement pump, the polymer becomes through the metering opening 29 with it small diameter in the form of a 3trails with high windigdigkelt pressed. When this jet reaches the expansion chamber 27, which has a relatively large diameter the speed of the polymer is reduced and the polymer now moves from the expansion chamber into the inlet opening 24 at el ier low speed.

In the same way, polymer 3 is in the annular cavity 36, through holes 40 in the annular cavity 38 and the Storage chamber 30, then through the inlet opening 28 into a further expansion chamber 26 supplied. In this way, the polymer S is moved into the inlet opening 24 as slowly Flow initiated. The two polymers P and S are thus side by side as slowly moving flows brought together. As they move slowly, the slope becomes greatly reduced for mixing, especially in the case of the polymers used for the production of synthetic threads with high viscosity. The two juxtaposed new polymer streams are then sprayed through the shape of the bottom of the spinneret to an increased sea speed and release the opening 22 in front of a high beam? Speed. At At this point, however, the pyramids no longer have any inclination, to mix, since they have already assumed the desired position next to each other.

15/1919 BAD OHlGINAL

P 40 260 * l

FIG. 2 shows that with the spinning arrangement according to the invention obtained Fadenquerechnltt. There is a general flat interface between the polymer 7 and the polymer S. Ea are no deposits during manufacture the pads formed and one obtained the desired one Appearance of the fabric.

It is true that the special spinning nozzle arrangement 10 described is suitable for threads consisting of two components lying next to one another. Ss is obvious, however; that more than two components or two polymers can be used. The number and arrangement of the metering openings and the expansion chambers must be modified accordingly. Furthermore, in the arrangement shown, a circular distribution of the spinnerets 20 on the surface of the spinneret plate 12 is provided and the various openings and cavities in the metering plate 14 and the spinneret plate 12 and the sand holder 16 are the same! arranged. It Iqt possible, the same principles apply in a spinning nozzle assembly _t the spinnerets arranged in rows in which are arranged. With such a design, the cavities in the sand holder and the various distribution channels must be modified in order to feed the polymer to the Zumesa openings at the correct locations. However, it does not matter which distribution, circular or in rows, is chosen, the essential requirement of the invention is that an expansion chamber follows an orifice so that the metered polymers, when they are connected to one another, are relatively small Move speed »so that any partial encapsulation or entrapment of one polymer by the other is prevented.

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10 19

P 40 260

The feeds and distribution channels and cavities are shown in the sand holder and in the Zumeesplatte. However , it may be desirable «to use a separate tarpaulin plate for the sand holder and the Zumee plate *

- 8th

/ 1919

Claims (4)

ΐυ over 1Y J1Y * ί-26 E.X. du Font de Nemours 27. Mal 1970 and Company DP-528 / IUM 050 / P 40 260 P u t e η t a η a ρ r ti ο h e 1. SplnndUsen arrangement for the production of composite threads of two or more polymers with a spinneret plate »which has a downstream and an upstream flange, a metering plate which has a has a downstream and an upstream surface, several supply sources as well as feeding facilities of polymer to each of the stocks, characterized in that that a) the spinneret plate contains one or more DUoes, each nozzle having an opening at the downstream located surface of the spinneret plate and a wide inlet opening on the upstream surface of the spinneret, b) the downstream surface of the Zumeasplatte the upstream face of the spinneret plate is present, ti) several Auodchnungskammern in the downstream located surface of the metering plate are arranged, with two or more expansion chambers above each of the inlet Openings and arranged to communicate with them are, d) the supply sources are arranged upstream of the expansion chambers and e) an orifice for each expansion chamber connects to a supply source. 2. Spinneret arrangement according to claim 1, characterized in that daas the supply springs chambers in the upstream Surface of the Zumeas plate are » 3 «Spinning and outer arrangement according to claim f, characterized in that that two expansion chambers above each inlet opening are arranged. 10 &"15/1919 * ADOR, _GiNAL P 40 2o " 4. Spinneret arrangement according to Anepruoh 1, characterized in that that the supply sources are chambers located in the downstream face of a sand holder »where the sand holder is arranged upstream of the metering plate and the downstream surface of the sand holder rests against the upstream surface of the metering plate. - 10 - 1 0 9 · '? 1 Γ) / 1 9 i 9