DE3930652A1 - Continuous rayon filament mfr. - gives prim. drawing at spinning unit and filaments pass in parallel through remaining stages to winding - Google Patents

Abstract

In the continuous mfg. of rayon filaments, filaments are given a preliminary drawing parallel to each other in the spinning unit. They are passed continuously through a cleaning, drying and winding stage, in sequence while the filaments are advanced in the parallel formation. Pref. a sec. drawing action is used for the filaments between the spinning unit and the cleaning stage. The washing action, in the cleaning stage, has a sulphur removal action by acid wash and there is a treatment with an oil medium, and this stage can also incorporate a bleaching action. The drying zone is closed. The system uses 100-300 filaments passing along side(s) of the processing units. ADVANTAGE - Technique makes the filaments easier to handle.

Description

The present invention relates to a ver drive and a device for continuous Manufacture of rayon filaments by parallel addition run a number of filaments.

With the current technology in this technical field, most rayon filaments or viscose filaments are produced using a centrifuge spinning process, in which spun rayon filaments are taken up in a pot formed from a resin and with a centrifugal force caused by rotation of the pot with approx. 800 to 10,000 min ^{-1 can be} rotated. In this method, the tensions which are present at the beginning and at the end of the filament yarn winding are different from one another. This difference in tension can lead to uneven thickness or color of the finished product. For this reason, the rayon filaments wound up in this way are primarily used for lining material for clothing.

There are many different ways to work around this problem Types of continuous spinning machines proposed been, but these machines were rare actually for the production of rayon filaments used. The following types are continuous Spinning machines for the production of rayon filaments are generally known: (1) the Nelson type, (2) the Oscar Kohorn type, (3) the Kuljian type and (4) Industrial rayon type.

(1) A Nelson type machine has one Construction with the slightly sloping Rolls are usually arranged in two parallel planes are arranged, and depending on the inclination of the rollers the filament yarn during the rotation of the rolls in their Moved axially in a spiral manner. While this movement of the filament yarn becomes the filament a cleaning treatment, a wash treatment and the like.  

(2) Has an Oscar Kohorn type machine a construction similar to the Nelson machine Type what the transport movement of the filament yarn concerned, but the cleaning coil and the Drying spool arranged separately from each other and their rotation speeds adjustable.

(3) A Kuljian-type machine has one Construction in which generally eight rolls in light are arranged obliquely and this assembled in the form of a single winding device are and in which the filament yarn by the respective Roll is moved. With this machine you can change the tension of the yarn relatively freely by you change the diameter of the rollers.

(4) Has an industrial rayon type machine a construction where a spool is the filament transported in the same way as in the Nelson-type machine is made by two coils and a plurality of coils to carry out the respective treatments, such as e.g. Cleaning, washing, drying and the like Treatments are provided.

The Japanese patent publication also discloses No. 60-50 882 (50 882/1985) a process for continuous manufacturing viscose rayon filaments. At this procedure, the viscose is replaced by a viscose filter and a spinning tube to a coagulation bath conveyed and then through a spinneret as viscose extruded yarn. That extruded in this way Viscose yarn is guided around a main by means of a guide  roll and a spacer roll, namely such that the yarn spirals up the rollers with equal distances in their axial direction is moving. During this movement of the filament yarn on the reels, the yarn is cleaning process subjected to the one working with water Washing treatment, a desulfurization treatment, a bleaching treatment and an oil treatment Includes washing treatment. The treated filament yarn is then dried on the rolls and through a guide to a winder promoted. The filament yarn is now being used as a yarn package the winder is wound, doing it correctly is twisted.

In the Nelson type yarn spinning machine (1) the following problems:

• (a) The operators must during the loading stand on both sides of the machine, which is troublesome for the operators.
• (b) There are different types of chemical liquids mixed on the rollers, so that the respective treatments during transportation movement of the filament yarn is not effective leads.
• (c) The rollers must be used for the drying treatment to be partially warmed and treated of the filament yarn partly with liquids are treated so that the surfaces of the Rollers are always dirty.  
• (d) The material forming the rolls must be made in this way choose to be the most caustic Treatment liquid withstands so that Material is expensive.

On the Oscar Kohorn type machine (2) the above-mentioned disadvantage (a) eliminated, and except the drying treatment on this machine executed by another role. However, this leads to the problem that the number of roles to handle of filament yarn increases.

On the Kuljian-type machine (3) and on the Industrial rayon type machines (4) exist if the above, for the machines (1) and (2) problems occurring, so that they are for the actual production of the filament yarn hardly ver be applied.

The types of machines mentioned above (1) to (4) common problems on the use of a number of roles whose each must have a large diameter so that the time for the chemical treatments and the Drying treatment can be reduced.

In conventional spinning machines for continuous Making filaments are the filaments at a speed of about 100 m / min conveyed, and if a yarn with a thickness of 100 denier is treated, the production is amount of yarn per day only about 1.5 kg per Thread spindle. It is therefore impossible to spin  machines of the conventional type, the high equipment bring costs in an economical way to operate, so that these machines for the Pro Production of rayon filaments for the production of Clothing cannot be used in practice. Out for this reason you have the spinning machines of the above explained type for the production of tire cord ver turns, each made of filament yarn with a Thickness is formed, which is about 10 times thicker or even more thicker than the thickness of the filament for manufacture of clothes is. With tire cord is an evaluation its outer appearance for its practical one of course, hardly necessary, and it is not bleaching treatment required. Seen from this point of view and from the standpoint of economy one of the conventional yarn spinning machines of the standing explained type probably as for the production of tire cord and the like in practice describe.

In addition, in Japanese Patent Ver publication No. 60-50 882 proposed spinning system also the following problems or disadvantages.

(1) Since the yarn is conveyed while it is during the cleaning process around the roller in its axial direction is the feasibility of the Procedural not so good, and the various loading action fluids can mix, causing a reduction in treatment efficiency arise can.  

(2) Since the yarn on the rolls is continuous Licher way through the respective chemical Be areas of action moves, the treatment liquids in the respective treatment areas Mix. This also leads to deterioration the treatment efficiency.

(3) Since the yarn has dried on an area of the roll treatment fluids can mix. This also leads to an impairment of the Treatment efficiency.

(4) As the yarn heats up on an area of the roll the respective treatment fluids crystallize and thus on the surface of the roll cling to.

(5) A material for forming the rolls must be such be selected to be highly caustic treatment withstands liquids so that the manufacture of the Rolling becomes more expensive.

However, there is an increasing need for today High quality rayon filaments in the field of Manufacture of clothing that comes from diversity which results in fashion. Compared to the yarn for tires cord e.g. need the fibers for making Clothing generally has a fine thickness, so that productivity in terms of manufacture of fibers for clothing is very low. Also have to the fibers for clothes look nice as well an even color distribution in the finished product have.

An object of the present invention is the creation of a process and a machine for the continuous production of rayon filaments parallel to each other, in which the Treat filaments effectively in an improved manner to let.

Solutions of this task according to the invention result from the characteristics of claims 1 and 8; preferred Further developments of the invention are in the Unteran sayings.

According to the present invention are a method and a machine for the continuous production of Rayon filaments by parallel conveyance of a Number of filaments created in the Is able to pass the filaments individually at a distance of mutually arranged machine blocks with improved Treat feasibility in an effective manner.

According to a first aspect of the present Er invention is a process for continuous production provide rayon filaments or viscose filaments create, which is characterized in that a Number of filaments in one spinning unit in parallel to be primary stretched to each other and then in continuous cleaning treatment, one Drying treatment and a winding process in be subjected to this order while the Filaments are conveyed parallel to each other. In a preferred embodiment, a secondary filament stretching treatment between the be action in the spinning unit and cleaning  treatment.

According to another aspect of the present Invention is a machine for continuous production places created by rayon filaments that stand out distinguishes that a filament spinning unit for Perform a primary stretching treatment which is a plurality of spinning pumps with each a plurality of outlet openings and a more number of spinnerets that each Outlet openings for the primary stretching of the Filaments correspond to that of a cleaning system the spinning unit is operationally connected, one Drying unit with the cleaning system in operation is moderately connected and a take-up unit with the drying unit is operationally connected, and that the spinning unit, the cleaning system, the Drying unit and the take-up unit all with are spaced from each other, leaving a number of filaments in the spinning undergo primary stretching treatment, be parallel to each other be promoted.

In a preferred embodiment, a secondary filament drawing unit with distance between the spinning unit and the cleaning system be.

In further preferred embodiments of the above lying invention, the spinning unit with a Pair of godets for running a primary filament stretch treatment. The cleaning area  action can take place under sealed conditions follow and the drying treatment can also under covered conditions. A number of filaments can be parallel to each other on both Conveyed sides of the filament making machine will.

According to the present invention as described above A number of filaments have been described ejected parallel to each other from spinnerets, and by a plurality of spinning pumps, one A plurality of exit openings in the filament Have spinning unit for the primary stretching treatment. The filaments are then in continuous and in parallel with improved feasibility of the spinning unit while going through a cleaning systems and a drying unit to the filament winding unit transported. The filaments are the respective chemical in the cleaning system Treated effectively, namely under sealed conditions at a preferred one Embodiment. A secondary filament stretch can act in between the primary stretching treatment the spinning unit and the cleaning treatment consequences. The respective units are against lateral distances from each other in the form of machines blocks arranged for easy maintenance the machine blocks can be lightened and the Condition of filament transport can be observed.

The invention and developments of the invention in the following based on the graphic representations an embodiment of the invention even closer explained. The drawings show:

Figure 1 is a schematic plan view of an exemplary embodiment from a machine for the continuous production of rayon filaments according to the present invention.

Fig. 2 is a schematic front view of the machine shown in Fig. 1;

Fig. 3 is an enlarged view of a left half of a spinning unit of the machine shown in Fig. 1 or 2, as seen along the line III-III of Fig. 2; and

Fig. 4 is a perspective view of an example of a conventional machine for the continuous spinning of Reyonfilamenten.

For a better understanding of the present invention, a conventional example of a continuous spinning machine will first be described below with reference to Fig. 4, which substantially corresponds to the technique disclosed in Japanese Patent Publication No. 60-50882 (1985).

As can be seen in Fig. 4, a viscose rayon filament through a viscose filter 1 and a spinneret 2 of a spinning tube 1 'leads into a coagulation bath 3 and is extruded as viscose yarn. The viscose yarn extruded in this way is wound by a guide 4 on a main roll 5 and a spacer roll 6 in such a way that the yarn is wound in an axial manner on the rolls 5 and 6 in the axial direction thereof on the rolls 5 and 6 . While the yarn is being wound on the rolls, the yarn is subjected to a cleaning process which includes a washing treatment using water, a desulphurization treatment, a bleaching treatment and an oil washing treatment or lubrication treatment. The reference numerals 8 and 8 'denote a device for supplying the water used for washing. The treated filament yarn 7 is then dried in a drying area 9 provided on the rolls and then fed through a guide 10 to a take-up spool 11 . The filament yarn is taken up around the take-up spool 11 as a yarn package, while the filament yarn is twisted or twisted in a suitable manner.

In this as well as other conventional examples for spinning processes and spinning machines are, however Problems and disadvantages described above to step.

The present invention was developed to eliminate the problems and disadvantages of the conventional technology and will now be explained in detail with reference to the preferred embodiment shown in FIGS. 1 to 3.

Figs. 1 and 2 while a schematic plan view and front view of a spinning machine according to the present invention, and Fig. 3 is an enlarged sectional view of a spinning unit of the machine shown in Fig. 1 or 2.

As can be seen, for example, in FIG. 1, a machine according to the invention for the continuous manufacture of rayon filaments comprises a spinning unit 15 with a plurality of spinnerets 16 , each of which has a plurality of outlet openings, two in the exemplary embodiment shown, and a plurality of which correspond in Fig. spinneret shown 3 17 to the respective outlet openings, and in addition, the machine of the invention comprises a secondary stretch unit 18 operatively connected to the spinning unit 15, a to the secondary stretch unit 18 connected cleaning system 20, operatively connected to the cleaning system 20 drying unit 21 and a Garnaufwickeleinrich device 22 . As shown in FIG. 2, the cleaning system 20 includes a water washing unit 23 , a desulfurization unit 24 , a water washing unit 25 , a bleaching unit 26 , a water washing unit 27 , an acid washing unit 28 , one water-working washing unit 30 and a treatment unit 31 working with oil or lubricant, the units mentioned being arranged in this order and being passed through by the filaments. The drying unit 21 is operatively connected to the yarn winding device 22 via a compensation device 32 , the operation of which is synchronized with that of the yarn winding device.

The machine blocks mentioned, that is, the spinning unit 15 , the secondary drawing unit 18 , the cleaning system 20 , the drying unit 21 and the yarn winding device 22 are arranged in operational connection with one another in this order with such intervals that a number of filaments in the spinning unit 15 are subjected to the primary stretching treatment, conveyed onward and treated in parallel.

As seen in Fig. 3, the spinning unit 15 includes a viscose supply pipe 33 , and the viscose from the viscose supply pipe 33 is operated by a spinning pump 16 , which is, for example, a double-type pump provided with two outlets , pulled through, for example, two spinnerets 17 , and the viscose filament is then stretched between a pair of godets, which is formed by a lower godet 34 and an upper godet 35 . The reference symbols 36 and 37 designate a viscose filter and a coagulation bath.

The filament emerging from the upper godet 35 is then guided through a guide into a drawing bath 38 . The spinning unit 15 is provided on its one side with, for example, generally 50 to 100 spinning pumps 16 , and thus filament bundles consisting of approximately 100 to 200 filaments are collected and led to the drawing bath 38 and then conveyed to the secondary drawing unit 18 . The spinning unit 15 has on its other side a further 50 to 100 spinning pumps 16 . A total of approx. 200 to 400 filaments are transported parallel to each other along the two sides of the machine.

The filaments, the number of which is approximately 100 to 200 on each side, are conveyed by the secondary drawing unit 18 parallel to one another in the direction of the filament yarn winding device 22 , passing through the roles of the individual units. The cleaning system 20 includes the washing units 23 , 25 , 27 and 30 , the desulfurization unit 24 , the bleaching unit 26 , the acid-working washing unit 28 and the oil-working treatment unit 31 , the units mentioned being provided with throttle rollers at their outlet areas in order to increase the treatment efficiency and to make the quality of the filaments even.

According to the embodiment of the spinning machine according to the invention, a further 100 to 200 filaments are conveyed along the other side of the machine, and the operator is easily able to handle the machine for treating the filaments conveyed on both sides thereof. The units of the cleaning system 20 , ie the desulfurization unit 24 , the bleaching unit 26 , the acid-working washing unit 28 and / or the oil-operating treatment unit 31 , in which the chemical treatments are carried out using chemical liquids, are arranged by a Enclosure 40 is tightly sealed, thereby preventing the operator from being contaminated by the chemicals and also improving the health environment of the work place.

For effective and inexpensive drying of the filaments, a cover 41 for the drying unit 21 can be provided in a removable manner.

Since the respective units are also equipped with suitable are spaced from each other, the operator can control the respective units handle well and e.g. a yarn break in between clearing out in a simple manner.

According to the process and the machine for continuous Lichen making the filaments like it has been described above, each Spinning pump that has a plurality of outlet openings is provided as a spinning pump for treatment using rayon filaments. The rayon filaments are Primarily stretched by a pair of roles and afterwards cleaned, dried and wound up by the filaments are conveyed parallel to each other and finally around the respective reel roles is wrapped. The process as well as the machine of the type described above can be the following Achieve advantages.

The respective units, e.g. the spinning unit, the secondary stretching unit, the cleaning system, the Drying unit and the take-up unit are as separate machine blocks arranged so that the ver  chemical liquids are hardly mixed, and in this way the filament treatment remarkably improve efficiency.

The ray filaments are parallel to each other through the Secondary stretching unit in the direction of the rewinder unit transported so that there is an improved through feasibility and the filament thus reducing manufacturing costs.

The respective units are in each other arranged separately so that some of the one units in which the chemical treatments are carried out leads, can be sealed in that one arranges them in an envelope, whereby the health environment around the machine as well as improve in the workplace.

The arrangement of the removable cover on the drying Unity can be effective and economical Facilitate drying process.

The arrangement of a single spinning unit with one A plurality of filament exit openings lead to a further reduction in manufacturing costs of rayon filaments.

The spaced apart arrangement of the respective Machine blocks allow easy handling of the respective units by the operator.  

It should be noted that the present Er not to the described embodiment games is limited, but that many changes and Modifications especially with regard to the Training of the respective machine blocks and the Number of roles can be made.

Claims (16)

1. A process for the continuous production of rayon filaments, characterized in that a number of filaments in a spinning unit are primarily drawn parallel to one another and then continuously subjected to a cleaning treatment, a drying treatment and a winding process in this order, while the filaments are conveyed parallel to one another . 2. The method according to claim 1, characterized, that the filaments between the treatment in the Spinning unit and cleaning treatment one Undergo secondary stretching treatment. 3. The method according to claim 1 or 2, characterized, that the cleaning treatment works with water Washing process, a desulfurization process, a  with acidic washing and with Oil treatment process involves. 4. The method according to any one of claims 1 to 3, characterized, that the cleaning treatment also bleaches process includes. 5. The method according to any one of claims 1 to 4, characterized, that the cleaning treatment under sealed Conditions. 6. The method according to any one of claims 1 to 5, characterized, that the drying treatment under covered Be conditions is executed. 7. The method according to any one of claims 1 to 6, characterized, that about 100 to 300 fibers along at least one Side of the units for execution of the respective Treatments are promoted. 8. Machine for the continuous production of rayon filaments, characterized in that a filament spinning unit ( 15 ) is provided for carrying out a primary drawing treatment, which has a plurality of spinning pumps ( 16 ), each with a plurality of outlet openings and a plurality of spinnerets ( 17 ) Outlet openings each has accordingly that a cleaning system ( 20 ) with the spinning unit ( 15 ) is operationally connected, a drying unit ( 21 ) with the cleaning system ( 20 ) is operationally connected and a winding unit ( 22 ) with the drying unit ( 21 ) in operation is moderately connected, and that the spinning unit ( 15 ), the cleaning system ( 20 ), the drying unit ( 21 ) and the winding unit ( 22 ) are all arranged at mutual distances from one another, so that a number of filaments which are in the spinning unit ( 15 ) undergo primary stretching treatment, parallel to each other units. 9. Machine according to claim 8, characterized in that a secondary stretching unit ( 18 ) is also arranged at a distance between the spinning unit ( 15 ) and the cleaning system ( 20 ). 10. Machine according to claim 8 or 9, characterized in that the cleaning system ( 20 ) with water-working washing units ( 23 , 25 , 27 , 30 ), a desulfurization unit ( 24 ), an acid-working washing unit ( 28 ) and one having treatment unit ( 31 ) working with oil medium. 11. Machine according to one of claims 8 to 10, characterized in that the cleaning system ( 20 ) also includes a bleaching unit ( 26 ). 12. Machine according to one of claims 8 to 11, characterized in that the cleaning system ( 20 ) is sealed by a sheath ( 40 ). 13. Machine according to one of claims 8 to 12, characterized in that the drying unit ( 21 ) is covered with a removable cover ( 41 ). 14. Machine according to one of claims 8 to 13, characterized in that the spinning unit ( 15 ) also includes an upper and a lower godet ( 34 , 35 ) for carrying out the primary filament stretching treatment. 15. Machine according to one of claims 8 to 14, characterized in that a drawing bath ( 38 ) for carrying out a filament drawing treatment is arranged in an upper region of the spinning unit ( 15 ). 16. Machine according to one of claims 8 to 15, characterized, that about 100 to 300 filaments parallel to each other conveyed along at least one side of the machine will.