CN101506410A - Process for the production of a cellulosic fiber from a solution of cellulose in a tertiary amine-oxide and device for carrying out said process - Google Patents
Process for the production of a cellulosic fiber from a solution of cellulose in a tertiary amine-oxide and device for carrying out said process Download PDFInfo
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- CN101506410A CN101506410A CNA2007800306157A CN200780030615A CN101506410A CN 101506410 A CN101506410 A CN 101506410A CN A2007800306157 A CNA2007800306157 A CN A2007800306157A CN 200780030615 A CN200780030615 A CN 200780030615A CN 101506410 A CN101506410 A CN 101506410A
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- filament
- stretcher
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- precipitating bath
- bath
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- 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
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
-
- 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
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
A process for the production of a cellulosic fiber from a solution of cellulose in a tertiary amine-oxide via a jet-wet process according to the present invention comprises the steps of pressing the solution of cellulose through a spinneret, thereby obtaining filaments, conducting the filaments through an air gap into a container containing a precipitation bath, drawing the filaments in the air gap, transporting the filaments out of the precipitation bath, further processing of the filaments, wherein drawing of the filaments is performed via a mechanically driven drawing-off device exerting a drawing force and at least part of the drawing force is transmitted onto the filaments by contacting the filaments with the drawing-off device at a location within the precipitation bath.
Description
Technical field
The present invention relates to a kind of technology and a kind of equipment that is used to implement this technology according to claim 12 with the cellulose solution produce cellulose fibers in the tertiary amino oxides according to claim 1.
Background technology
In recent years, developed multiple in the mixture of organic solvent and water the technology of produce cellulose fibers.Cellulose fibre with such solution production is called as the Lyocell fiber.Unique profitable technology that will obtain the Lyocell fiber at present is to use the tertiary amino oxides solvent, particularly uses N-methylmorpholine-N-oxide (NMMO) to produce.The fiber that this explained hereafter goes out is characterised in that the hook strength of high strength, high wet modulus and enhancing, and is known as " amine oxide technology ".
From US4246221, can know a kind of cellulosic solution that is dissolved in tertiary amine N-oxide solvent that comprises, contain and be useful on for example water of cellulosic non-solvent, by extruding or other forming technologies shapings, to constitute cellulose fibre, fiber rod, fiberboard, fiber tubing or the fiber membrane that is shaped.Remain solution when the material of extrusion molding is stretched to give its better physical property in air, then cellulose from shaping solution precipitated get off need not other stretching to limit these character.Moulding material can be by dissolving cellulos in the tertiary amine N-oxide solvent in the extrusion device tube, extrusion solution, by resulting in the air in-draw still be the orientating products of solution at that time, and before cellulose is obviously degenerated, cellulose is precipitated out from moulding material subsequently and prepares.Cellulose and tertiary amine N-oxide can be ground before the extruder barrel of packing into is essentially identical particle size.Tertiary amine N-oxide is reduced and recycles to avoid problem of environmental pollution.Cellulose fibre that obtains or film can be used to make fabric, packing or encapsulating material or nonwoven products.
At present use two kinds of different technology to produce the Lyocell fiber basically.According to first method, use a kind of spinning funnel that has outlet in the bottom, pull out filament thus by tractive force.The embodiment of this technology is disclosed among the EP0574870.Can avoid effluent compressing fiber to bond together by guide plate.Second method applies stretching action power by the outer mechanical device of precipitating bath to fiber.Stretcher is set at outside the precipitation bath container, as shown in US4246211 or the WO93/19230.
From WO02/12599A1, can know a kind of method and apparatus that is used to extrude continuous moulded bodies.In order to obtain continuous moulded bodies, a kind of extrusion solution particularly comprises the extrusion solution of water, cellulose and tertiary amino oxides, is extruded and is diverted by turning facilities subsequently by extruding opening.In order to improve the quality of products, to extrude opening and left the such mode of extruder head according to each continuous moulded bodies with the form of curtain and dispose and embark on journey.This curtain promptly is diverted by turning facilities then.
Equipment commonly known in the art and technology are limited in paying close attention to the width of air gap between spinning head and the precipitating bath, the degree of depth of precipitating bath and the stretching angle of extruding filament.The latter is the principal element that influences fiber production and quality.It is limited by the angle between fiber that leaves spinning head and the trunnion axis.Opening in the spinning head is many more, and it is big more that this angle will become, and filament tends to bond together or be torn thus.On the other hand, open amount reduces equipment yield than I haven't seen you for ages, therefore increases the production cost of fiber.
According to prior art, behind plant maintenance or autostop, just can't not start spinning process by manual intervention.
Summary of the invention
Therefore a target of the present invention provides a kind of technology and equipment with the cellulose solution produce cellulose fibers, and it has avoided the defective of known equipment and technology in the prior art.
Especially, a target of the present invention is to allow freely to select the degree of depth of qualification width of air gap, precipitating bath and from the parameter of the stretching angle of the filament of spinning head.
Another target of the present invention provides a kind of equipment, utilizes this equipment can start spinning process automatically after shutdown.
These targets reach with the technology of cellulose solution produce cellulose fibers and a kind of equipment that is used to implement described technology according to claim 12 according to claim 1 by a kind of.
May further comprise the steps by the technology of spray-wet method according to the present invention: by spinning head extrusion fiber cellulose solution with the cellulose solution produce cellulose fibers in the tertiary amino oxides, thereby acquisition filament, filament is contained in the container of precipitating bath by the air gap introducing, at air gap in-draw filament, filament is sent precipitating bath, further process filament, wherein apply stretching action power and carry out the stretching of filament, and be transferred on the filament with near small part stretching action power by filament is contacted with a certain position of stretcher in precipitating bath by mechanically operated stretcher.
Further processing step is included in being included in through transmitting filament after the precipitating bath in interior institute in steps of carrying out on the filament.Main processing step is cutting and cleans filament.
Being used to implement equipment according to technology of the present invention comprises and is used to extrude cellulose solution to form the spinning head of cellulose filament; The container that is used for precipitating bath is arranged on spinning head below and is set to keep at a certain distance away so that when being loaded into precipitating bath in the container with spinning head, can form air gap between precipitated liquid surface and spinning head surface; Mechanically operated stretcher is used to utilize the stretching action power that is applied by described stretcher at air gap in-draw filament, and wherein stretcher has contact point, and filament contacts with equipment and is transferred on the filament at this to small part stretching action power at this.Contact point is set in the container that is used for precipitating bath.
Compare with method of the prior art, equipment of the present invention and technology are characterised in that the mechanical type stretcher that is set in the precipitating bath and applies stretching action power to fiber wherein.Thereby document of the prior art shows stretcher and is set at the outer flexibility that limits the device geometry designs of precipitating bath.Fiber leaves precipitating bath smoothly and is stretched to its final lengths, and can be used for further processing at once and need not further stretching.
More advantages of the present invention and embodiment are conspicuous by dependent claims.
According to a preferred embodiment of the present invention, all basically stretching action power all described position in precipitating bath is transferred on the filament.Because entire equipment all is added in stretching action power on the filament that is positioned at precipitating bath, be favourable in same area therefore with stretch limit.
According to a further advantageous embodiment of the invention, exposing tension load on the longitudinal direction of filament less than 5,5cN/tex.It is favourable not applying tension force at filament as can be known after filament is stretched from WO97/33020.The filament of producing like this has lower tendency for fibrillation.
According to a further advantageous embodiment of the invention, described stretcher is a kind of from by roller, conveyer belt with not only comprised roller but also comprised the equipment of selecting the group that the system of conveyer belt constitutes.
And according to a further advantageous embodiment of the invention, roller and conveyer belt all have the filament contact surface, are designed to bonding to allow transmission at least a portion stretching action power by between filament and the surface.
According to a further advantageous embodiment of the invention, the design on this surface is to select from the group that is made of microstructure, ripple, permeable, rib shape and/or inflatable design.
And another preferred embodiment of the present invention has provided to utilize and has taken out filament from washed, rock, rub, brush, inhale and blown the step of selecting the group that constitutes by water from stretcher.
Further advantageously filament is diverted in precipitating bath and is sent precipitating bath in the side-walls of precipitation bath container or the surface by precipitating bath.Alternatively, filament is sent precipitating bath in a downward direction in the bottom of precipitation bath container.Under the situation that bottom or the sidewall of fiber by container leaves precipitating bath, stretcher is designed to prevent substantially that precipitating bath from leaking out precipitation bath container.
Filament is stretched and is sent precipitating bath because the stretching angle obviously reduces with the form of curtain also is favourable.
According to a further advantageous embodiment of the invention, stretcher is a kind of from by roller, conveyer belt with not only comprised roller but also comprised the equipment of selecting the group that the system of conveyer belt constitutes.
And according to a further advantageous embodiment of the invention, roller and conveyer belt filament contact surface separately all be designed to can be by between filament and the surface bonding allowing transmission at least a portion stretching action power, described surface is a kind of design of selecting from the group that is made of microstructure, ripple, permeable, rib shape and/or inflatable design.
According to another advantageous embodiments of the present invention, stretcher comprises the device that is used for taking out from stretcher filament, is used for turning in precipitating bath the transfer of filament, is used for by the surface of precipitating bath filament being sent the device of precipitating bath.
Preferably, stretcher is set at the bottom of precipitation bath container and comprises the device that is used in a downward direction filament being sent precipitating bath, comprise two rollers that are arranged on precipitation bath container bottom or precipitation bath container side-walls, described roller limits the gap that filament passes through when being stretched, described gap is restricted to and can prevents substantially that precipitating bath from leaking from container.
Preferably, the roller in the precipitation bath container bottom is set to move towards each other to regulate the size of clearance between roll.
As mentioned above, the invention provides the particularly very flexibility of height of its degree of depth aspect of adaptation precipitating bath geometry designs.The very shallow precipitating bath degree of depth may can be had.Therefore, in a kind of further application of the present invention, described precipitating bath has the degree of depth, the minimum-depth of container be restricted to the radius of roller about equally.
And it is the rectangular spinnerets of curtain form that spinning head preferably is used for bourette spinning, and wherein stretcher designed to be used the stretching filament and filament is sent precipitation bath container with the form of curtain.
Description of drawings
The preferred embodiments of the present invention are by shown in the drawings and carry out more detailed introduction in the following description content.
In the accompanying drawings:
Figure 1A is the side schematic view according to a preferred embodiment of equipment of the present invention,
Figure 1B is the side schematic view according to second embodiment of equipment of the present invention,
Fig. 2 is the schematic diagram of filament curtain,
Fig. 3 A-B is the schematic diagram according to third and fourth embodiment of equipment of the present invention,
Fig. 3 C is the schematic diagram according to the 5th embodiment of equipment of the present invention,
Fig. 4 is the schematic diagram according to the 6th embodiment of equipment of the present invention.
In the accompanying drawings, identical Reference numeral is represented same or analogous parts.
The specific embodiment
The present invention is more intactly introduced the preferred embodiments of the present invention shown in the drawings hereinafter with reference to accompanying drawing.
Generally include the several steps that structure and texture to filament have appreciable impact by spray-wet method with the technology of the cellulose solution produce cellulose fibers in the tertiary amino oxides.First embodiment that is applicable to the equipment 1 of realizing described technology is shown in Figure 1A.At first, by spinning head (not shown) extrusion fiber cellulose solution, spinning head can comprise the one or more openings that are provided with different structure, for example one or more circular holes etc.Alternatively, spinning head is that to be used for bourette spinning be the rectangular spinnerets of curtain form.
Thus obtained filament 2 is conducted through spinning head and comprises air gap 3 between the container 4 of precipitating bath.When passing through air gap 3, filament 2 is stretched and for example increases wet modulus to give its improved physical property.
According to prior art, filament 2 leaves the stretching angle of spinning head and is limited by for example width of air gap 3.Because by the stretching angle that angle limited between filament 2 that leaves spinning head and the trunnion axis is the principal element that influences fiber production and quality, therefore wish to remain it as far as possible little.Opening in the spinning head is many more, and it is big more that this angle will become, and filament can tend to bond together or be torn when air gap 3 is narrow thus.On the other hand, open amount reduces equipment yield than I haven't seen you for ages, thereby increases the production cost of fiber.Because the degree of depth of air gap 3 or precipitating bath is compared with equipment of the prior art respectively can be wideer or darker, so the present invention allows to use and has the more spinning head of multiple exit opening.
On filament 2, apply stretching action power by mechanically operated stretcher 5 and carry out the stretching of filament.This explanation is different with the funnel spinning that also stream by precipitated liquid applies stretching action power, and the equipment 5 that applies stretching action power is mechanically operated.Filament 2 is sent precipitation bath container 4 and further processes subsequently.
According to the present invention,, filament 2 is transferred on the filament 2 with near small part stretching action power by being contacted with a certain position of stretcher 5 in the container 4 that comprises precipitating bath.More specifically, the contact point C of filament 2 and stretcher 5 is set in the precipitating bath or is arranged under the surface of precipitating bath solution.Preferably all stretching action power can be applied on the filament 2 at the described contact point C place in precipitating bath.
The tension load on the longitudinal direction that exposes filament 2 after just being stretched during the further processing preferably less than 5,5cN/tex.Filament further can have lower tendency for fibrillation during the processing like this.
Further processing step is included in being included in through transmitting filament 2 after the first make contact C in interior institute in steps of carrying out on the filament 2.Main processing step is cutting and cleans filament 2.
Stretcher 5 is a kind of from by roller 6 and conveyer belt 7 and not only comprised roller 6 but also comprised the equipment of selecting the group that the system of conveyer belt 7 constitutes.Embodiment according to Figure 1A comprises that two rollers 6 are connected the conveyer belt 7 of roller 6 with one, and comprises according to second embodiment of Figure 1B and to be set to seven rollers 6 of two groups by two conveyer belts 7.Can control the stretching action power that is applied on the filament 2 thus.This specifically is to realize by the roller of installing movably as shown in Figure 1B 6.In the embodiment of Figure 1B, contact point C is set near the roller 6 that is positioned at precipitation bath container 4 bottoms, but contact point C also can be set at the pair of rolls 6 ＂ places of top alternatively.This makes it possible to apply stretching action power by precipitating bath in the passage of the top of precipitation bath container 4 and filament subsequently 2 and need not further stretching, extension.
If spinning head is designed to rectangle, stretcher 5 designed to be used stretching filament 2 and filament 2 is sent precipitation bath container with the form of curtain so.Also might use a plurality of rectangular spinnerets to produce the curtain of the parallel filament 2 of polylith.The polylith curtain is drawn by precipitating bath in the mode of the curtain that is similar to monolithic filament 2.
In order to remove filament 2 from the roller 6 of stretcher 5 and/or the surface 8 of conveyer belt 7, need the device that is used to move silk.Described device is water for example, and the water column with different shape dashes filament 2 from surface 8.Other possibility can be that mechanical means are for example rocked, refill, inhaled or blow or for example infantees or brush remove by servicing unit.
Fig. 3 A shows to Fig. 3 C and is used in the container 4 of precipitating bath processing filament 2 and filament 2 is sent more embodiment of the equipment 1 of precipitating bath along downward direction in the bottom of precipitation bath container 4, and wherein stretcher 5 is set at the bottom of container 4 and is designed to prevent substantially that precipitating bath from leaking out precipitation bath container 4.
When stretcher 5 was set at the bottom of precipitation bath container 4, it comprised the device that is used in a downward direction filament being sent precipitating bath.Those devices represent that with two rollers 12 that are arranged on precipitation bath container 4 bottoms or precipitation bath container 4 side-walls described roller 12 limits the gap 11 that filament 2 passes through betwixt when being stretched.The size in described gap 11 is enough to prevent substantially that precipitating bath from leaking from container 4.And described roller 12 is set to move towards each other with the size according to the gap 11 of 12 on the thickness adjusted roller of the curtain of filament 2 or filament 2.
Embodiment shown in Fig. 3 A to Fig. 3 C shows the various possibilities about the quantity design of roller 6 and conveyer belt 7, from only comprise two rollers 12 according to Fig. 3 A, through comprising the embodiment that is connected to two rollers that are used to turn to 6 of two rollers 12 by two conveyer belts 7 according to Fig. 3 B, to the device according to Fig. 3 C, the design that shows elongation is to allow for example further to process by adding treatment fluid the filament 2 that leaves container 4.
Alternatively, in precipitating bath by turn to 10 filaments that turn to 2 can according to Fig. 4 by precipitation bath container 4 sidewall 9 or be sent precipitation bath container 4 through the surface of precipitating bath.Second kind of optional mode be shown in Figure 1A and Figure 1B, and transfer 10 represents with roller 6 therein, especially with the roller 6 of bottommost ' represent.The roller 6 of described bottommost ' preferably the be marked with roller of the contact point C of filament 2 and stretcher 5.
When the sidewall 9 by precipitation bath container 4 turned to, roller 12 also was set on the sidewall 9.For other parts, also can correspondingly be provided with to the setting of Fig. 3 C according to Fig. 3 A.
The minimum-depth of the precipitation bath container 4 among above-mentioned all embodiment is only limited by the radius R of roller 6.The radius of the minimum-depth of container 4 and the residing roller 6 of contact point C about equally.The minimum-depth that is used for the container 4 of radius R and correspondence can be approximately 6cm.Therefore equipment 1 can obviously reduce dimensionally, thereby need less space.
The present invention is not limited to the above embodiments.
Claims (23)
1, a kind of by the technology of spray-wet method with the cellulose solution produce cellulose fibers in the tertiary amino oxides, may further comprise the steps:
-by spinning head extrusion fiber cellulose solution, thus filament obtained,
-filament is contained in the container of precipitating bath by the air gap introducing,
-at air gap in-draw filament,
-filament is sent precipitating bath,
-further process filament,
Wherein apply stretching action power and carry out the stretching of filament, it is characterized in that by mechanically operated stretcher:
By making filament contact near small part stretching action power to be transferred on the filament with a certain position of stretcher in precipitating bath.
2, technology as claimed in claim 1 is characterized in that all basically stretching action power all is transferred on the filament the described position in precipitating bath.
3, technology as claimed in claim 2 is characterized in that filament after through the described position in the precipitating bath, is exposed on during further processing and is not more than 5 along the longitudinal direction, under the tension load of 5cN/tex.
4, any as described above described technology of claim is characterized in that described stretcher is a kind of from by roller, conveyer belt with not only comprised roller but also comprised the equipment of selecting the group that the system of conveyer belt constitutes.
5, technology as claimed in claim 4, the filament contact surface that it is characterized in that roller or conveyer belt are designed to bonding to allow transmission at least a portion stretching action power by between filament and the surface respectively.
6, technology as claimed in claim 5, the design that it is characterized in that described surface are to select from the group that is made of microstructure, ripple, permeable, rib shape and/or inflatable design.
7, any as described above described technology of claim is characterized in that utilizing from washed, rock, rub, brush, inhale and blown the step of selecting the group that constitutes by water and take out filament from stretcher.
8, any as described above described technology of claim is characterized in that filament is diverted and is sent precipitating bath in the side-walls of precipitation bath container or the surface by precipitating bath in precipitating bath.
9,, it is characterized in that filament is sent precipitating bath in a downward direction in the bottom of precipitation bath container as any described technology in the claim 1 to 7.
10, technology as claimed in claim 8 or 9 is characterized in that stretcher is designed to prevent substantially that precipitating bath from leaking out precipitation bath container.
11, any as described above described technology of claim is characterized in that filament is stretched and is sent precipitating bath with the form of curtain.
12, be used to implement the equipment of any as described above described technology of claim, comprise:
-be used to extrude cellulose solution to form the spinning head of cellulose filament;
-be used for the container of precipitating bath, be arranged on spinning head below and be set to keep at a certain distance away with spinning head, so that when being loaded into precipitating bath in the container, between precipitated liquid surface and spinning head surface, form air gap;
-mechanically operated stretcher is used to utilize the stretching action power that is applied by described stretcher at air gap in-draw filament,
-stretcher has contact point, and filament contacts with equipment and is transferred on the filament at this to small part stretching action power at this,
It is characterized in that:
Contact point is set in the container that is used for precipitating bath.
13, equipment as claimed in claim 12 is characterized in that stretcher is a kind of from by roller, conveyer belt with not only comprised roller but also comprised the equipment of selecting the group that the system of conveyer belt constitutes.
14, equipment as claimed in claim 13, the filament contact surface that it is characterized in that roller or conveyer belt are designed for bonding to allow transmission at least a portion stretching action power by between filament and the surface respectively.
15, equipment as claimed in claim 14, the design that it is characterized in that described surface are to select from the group that is made of microstructure, ripple, permeable, rib shape and/or inflatable design.
16,, it is characterized in that it further comprises the device that is used for taking out from stretcher filament as any described equipment in the claim 12 to 15.
17, as any described equipment in the claim 12 to 16, it is characterized in that described stretcher comprises the transfer that is used for turning to filament in precipitating bath.
18, equipment as claimed in claim 17 is characterized in that described stretcher comprises the device that is used for by the surface of precipitating bath filament being sent precipitating bath.
19,, it is characterized in that described stretcher is set at the bottom of precipitation bath container and comprises the device that is used in a downward direction filament being sent precipitating bath as any described equipment in the claim 12 to 16.
20, as any described equipment in the claim 12 to 16, it is characterized in that it comprises two rollers that are arranged on precipitation bath container bottom or precipitation bath container side-walls, described roller limits the gap that filament passes through when being stretched, described gap is restricted to and is used for preventing basically that precipitating bath from leaking from container.
21, equipment as claimed in claim 20 is characterized in that described roller is set to move towards each other to regulate the size of clearance between roll.
22, as claim 20 or 21 described equipment, it is characterized in that described precipitating bath has the degree of depth, the minimum-depth of precipitation bath container be restricted to the radius of roller about equally.
23, as any described equipment in the claim 12 to 22, it is characterized in that spinning head is that one or more being used for bourette spinning is the rectangular spinnerets of curtain form, and wherein stretcher designed to be used the stretching filament and filament is sent precipitation bath container with the form of one or more curtain.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1381/2006 | 2006-08-17 | ||
| AT13812006A AT504144B1 (en) | 2006-08-17 | 2006-08-17 | METHOD FOR THE PRODUCTION OF CELLULOSE FIBERS FROM A SOLUTION OF CELLULOSE IN A TERTIARY AMINE OXIDE AND DEVICE FOR CARRYING OUT THE METHOD |
| PCT/AT2007/000377 WO2008019411A1 (en) | 2006-08-17 | 2007-08-06 | Process for the production of a cellulosic fiber from a solution of cellulose in a tertiary amine-oxide and device for carrying out said process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101506410A true CN101506410A (en) | 2009-08-12 |
| CN101506410B CN101506410B (en) | 2011-05-18 |
Family
ID=38662832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800306157A Expired - Fee Related CN101506410B (en) | 2006-08-17 | 2007-08-06 | Process for the production of a cellulosic fiber from a solution of cellulose in a tertiary amine-oxide and device for carrying out said process |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN101506410B (en) |
| AT (1) | AT504144B1 (en) |
| DE (1) | DE112007001828T5 (en) |
| WO (1) | WO2008019411A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3505659A1 (en) | 2018-08-30 | 2019-07-03 | Aurotec GmbH | Method and device for filament spinning with inflection |
| CN116334777B (en) * | 2023-05-26 | 2023-07-21 | 吉林富博纤维研究院有限公司 | Water bath drafting device and PAN-based carbon fiber precursor production system |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL257400A (en) * | 1959-11-02 | 1900-01-01 | ||
| GB1051472A (en) * | 1963-02-26 | |||
| US3996321A (en) * | 1974-11-26 | 1976-12-07 | E. I. Du Pont De Nemours And Company | Level control of dry-jet wet spinning process |
| US4416698A (en) * | 1977-07-26 | 1983-11-22 | Akzona Incorporated | Shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent and a process for making the article |
| US4246221A (en) | 1979-03-02 | 1981-01-20 | Akzona Incorporated | Process for shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent |
| US5234651A (en) * | 1991-09-12 | 1993-08-10 | Kigen Kawai | Dry-jet wet spinning of fibers including two steps of stretching before complete coagulation |
| ATA53792A (en) * | 1992-03-17 | 1995-02-15 | Chemiefaser Lenzing Ag | METHOD FOR PRODUCING CELLULOSIC MOLDED BODIES, DEVICE FOR IMPLEMENTING THE METHOD AND USE OF A SPINNING DEVICE |
| DE4308524C1 (en) | 1992-06-16 | 1994-09-22 | Thueringisches Inst Textil | Process for the production of cellulose fibers and filaments by the dry-wet extrusion process |
| ATA239194A (en) * | 1994-12-22 | 1996-02-15 | Chemiefaser Lenzing Ag | DEVICE FOR CARRYING OUT A DRY / WET SPINNING PROCESS |
| GB9526168D0 (en) * | 1995-12-21 | 1996-02-21 | Courtaulds Fibres Holdings Ltd | Fibre manufacture |
| AT404032B (en) | 1996-03-04 | 1998-07-27 | Chemiefaser Lenzing Ag | METHOD FOR PRODUCING CELLULOSIC FIBERS |
| AT406386B (en) * | 1998-07-28 | 2000-04-25 | Chemiefaser Lenzing Ag | METHOD AND DEVICE FOR PRODUCING CELLULOSIC MOLDED BODIES |
| DE10037923A1 (en) | 2000-08-03 | 2001-03-29 | Zimmer Ag | Extrusion of solutions based on water cellulose and tertiary amine oxide to create continuous fibers, involves forming a flat band of fibers which passes around a diverter |
| DE10314878A1 (en) * | 2003-04-01 | 2004-10-28 | Zimmer Ag | Method and device for producing post-stretched cellulose filaments |
| DE102004031025B3 (en) * | 2004-06-26 | 2005-12-29 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Method and device for the production of shaped articles from cellulose |
| DE102005024433A1 (en) * | 2005-05-24 | 2006-02-16 | Zimmer Ag | Lyocell staple fibers of increased loop strength are obtained by having tertiary amine oxides still present in the spun filaments during the cutting stage |
-
2006
- 2006-08-17 AT AT13812006A patent/AT504144B1/en not_active IP Right Cessation
-
2007
- 2007-08-06 WO PCT/AT2007/000377 patent/WO2008019411A1/en active Application Filing
- 2007-08-06 CN CN2007800306157A patent/CN101506410B/en not_active Expired - Fee Related
- 2007-08-06 DE DE112007001828T patent/DE112007001828T5/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE112007001828T5 (en) | 2009-06-25 |
| AT504144A1 (en) | 2008-03-15 |
| AT504144B1 (en) | 2013-04-15 |
| WO2008019411A1 (en) | 2008-02-21 |
| CN101506410B (en) | 2011-05-18 |
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