EP0757126B1 - Verfahren zur thermomechanischen Behandlung einer Vliesbahn aus thermoplastischem Kunststoff und Anlagen für die Durchführung des Verfahrens - Google Patents
Verfahren zur thermomechanischen Behandlung einer Vliesbahn aus thermoplastischem Kunststoff und Anlagen für die Durchführung des Verfahrens Download PDFInfo
- Publication number
- EP0757126B1 EP0757126B1 EP96111728A EP96111728A EP0757126B1 EP 0757126 B1 EP0757126 B1 EP 0757126B1 EP 96111728 A EP96111728 A EP 96111728A EP 96111728 A EP96111728 A EP 96111728A EP 0757126 B1 EP0757126 B1 EP 0757126B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas stream
- woven web
- treatment station
- temperature
- thermal treatment
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
- Y10T156/1702—For plural parts or plural areas of single part
- Y10T156/1712—Indefinite or running length work
- Y10T156/1737—Discontinuous, spaced area, and/or patterned pressing
Definitions
- the invention relates to a method for thermomechanical Treatment of a nonwoven web made of filaments and / or Fibers made of thermoplastic plastic, in a continuous process.
- a nonwoven web made of filaments and / or Fibers made of thermoplastic plastic, in a continuous process.
- Such nonwoven webs are also called spunbonded nonwoven webs designated.
- fibers are short, fibrous Plastic elements, the z. B. using the meltblown technique have been generated and a meltblown nonwoven form, whose fibers also at the intersections and Contact points are cohesively united.
- the nonwoven web can be single or multi-layered from several individual Nonwoven webs must be constructed.
- thermomechanical Treatment of a nonwoven web those made of filaments and / or fibers made of thermoplastic
- plastic in various embodiments known (see EP-A-0 127 483).
- a common thermomechanical Treatment is especially the so-called bonding. Underneath it is understood that the nonwoven web with spot welds as it were is provided with a predetermined Weld spot diameter and in accordance with a predetermined Grid evenly distributed over the nonwoven web are.
- the filaments or fibers are in the range of Spot welds not completely, so not as it were
- the plates are welded together.
- the welding spots have a different shape from the platelet Structure in which the filaments and / or fibers in the Spot welds are at least recognizable as a texture.
- Such Welding points are also referred to as bonding points.
- the Bonding increases the strength of the Nonwoven web. To a defined increase in strength all spot welds must practically achieve that have the same geometry and structure and are even be distributed over the length and width. The bond must be uniform in that sense. The bonding takes place according to the state of the art, usually immediately afterwards fleece formation in the plant for the production of such Nonwovens, with the help of bonding point embossing rollers. You are heated. On the temperature at which the nonwoven web the bonding is fed, no particular influence taken. The bond that can be achieved in this way is in relation to the Uniformity needs improvement. Quality can also the bond is not easy to different operating conditions, e.g. B.
- the invention is based on the technical problem Specify the method with which an in described senses very uniform as well as different Customizable thermomechanical operating conditions Treatment of a nonwoven web made of filaments and / or fibers made of thermoplastic material possible is.
- the invention is based on the knowledge that with a Gas flow that flows through the nonwoven web is a very uniform preheating of the nonwoven web and in connection a very uniform thermomechanical treatment the nonwoven web are possible, as it were through and by.
- the voting rule according to the invention according to which Gas flow temperature and gas flow velocity on the one hand as well as the treatment line of the nonwoven web in the thermal treatment station on the other hand chosen that the preheating temperature at all speeds, which the nonwoven web can accept in operation, including zero speed, the temperature of the The melting point of the filaments and / or fibers is not exceeds, ensures that the nonwoven web in the thermal treatment station is not damaged, but for the downstream mechanical treatment is optimized.
- thermal Treatment station worked so that the preheating temperature matches the gas flow temperature.
- the preheating temperature matches the gas flow temperature.
- the parameters can always be selected so that in the fleece web the melting temperature of the filaments or Fibers is not exceeded, even if the Gas flow temperature is higher than the melting temperature. If the gas flow temperature is less than the melting temperature, so it becomes infinitely longer, as it were Treatment of a fleece section in the thermal Treatment station the melting point was not reached. Business interruptions are easily mastered.
- the preheating temperature is when leaving the thermal Treatment station measured.
- the nonwoven web can be used in thermal Treatment station on a flow-through conveyor belt guided and flows through from top to bottom of the gas stream become. But there is also the possibility that Nonwoven web in the thermal treatment station between to guide two flowable conveyor belts, whereby they from top to bottom and from bottom to top of that Gas flow is flowed through. In this context, the Nonwoven web successively from top to bottom or from below upward, or in reverse, from the gas stream be flowed through. There is also the possibility the nonwoven web at the same place and at the same time in the thermal treatment station from the gas stream too flow through, the two gas flows as it were clash.
- the preheated nonwoven web during mechanical treatment with Provided bonding points With Provided bonding points.
- the preheated Nonwoven web in the mechanical treatment between heated bonding point embossing rollers with the bonding points equipped, cooling can be excluded become.
- the nonwoven web can be used in the mechanical Treatment of stretching in the longitudinal direction and / or in Subsequent direction and then cooled.
- the preheated nonwoven web during mechanical treatment first provided with bonding points and then stretching subjected in the longitudinal and / or transverse direction.
- the invention allows it, the gas flow temperature, the gas flow velocity and the treatment section of the nonwoven web in the thermal Treatment station different thermoplastic Plastics and / or different nonwoven web products adapt.
- an air stream can be used as Gas flow to be worked.
- Gas flow can also include water vapor or a mixture of air and steam are used. Occurs in the Fleece on condensation, it is recommended to use a Downstream drying stage.
- a method according to the invention consists in its basic Structure of a nonwoven system 1, one endless conveyor belt 2, a thermal Treatment station 3 and a mechanical treatment station 4th
- the endlessly rotating conveyor belt 2 is for receiving the Forming nonwoven web 5 and for the removal of formed nonwoven web determined.
- the thermal treatment station 3 for the nonwoven web 5 formed Devices 6 for the flow through the nonwoven web 5 with a gas flow with a predetermined gas flow velocity Gas flow temperature.
- the flow was in Fig. 1 by Arrows indicated.
- the mechanical treatment station 4 serves in the embodiment of Fig. 1, the nonwoven web 5 to be provided with bonding points.
- the mechanical Treatment station 4 is provided with bonding rollers 7 equipped.
- the nonwoven web 5 is on the conveyor belt 2 through the thermal treatment station 3 and the mechanical treatment station 4 out.
- a web spinnerette 8 belongs to the web formation system 1 prepared in the usual way thermoplastic Plastic is fed. Step out of the spinnerette 8 corresponding filaments 9 from. You pass one Cooling station 10 and enter a so-called drafting shaft 11 a, to which a diffuser 12 connects.
- the rollers 13 fulfill a sealing function and allow the Process air in the direction of a drawn arrow dissipate.
- the roller 13 shown on the right in the figure also presses the nonwoven web 5 formed against it Conveyor belt 2, which has a corresponding abutment is led. The circulation route of the conveyor belt 2 was not drawn.
- the thermal treatment station 3 is aerodynamically so designed to be a very uniform thermal Treatment in the transverse direction of the nonwoven web 5 takes place and also no defects or in the longitudinal direction of the nonwoven web 5 Singularities occur.
- the mechanical treatment station 4, as already mentioned, works with bonding rollers 7.
- the nonwoven web 5 is at the temperature with which it leaves thermal treatment station 3, d. H. with a Preheating temperature that is below the melting temperature of the Filaments or fibers are in the mechanical Treatment station 4 introduced.
- FIG. 2 shows a system for Carrying out a method according to the invention, the one Nonwoven web coil station 14, a thermal treatment station 3 for the nonwoven web 5 and a mechanical Treatment station 4, the mechanical Treatment station 4 is designed as a stretching system.
- the for Coil 15 wound nonwoven web 5 is elsewhere created and may have been made at another time. This already applies to the thermal treatment station 3 Said.
- the mechanical treatment station 4 connects the thermal treatment station 3 with the result that the fleece web 5 which is at the preheating temperature is introduced directly into the stretching system, one Stretching is carried out in the longitudinal direction and / or transverse direction becomes.
- the nonwoven web 5 can beforehand, as for FIG. 1 explained, have been equipped with bonding points. They keep their structure when stretching, if after the process according to the invention is carried out.
- the treatment section lies between L 1 and L 2 .
- the nonwoven web 5 may have been introduced into the thermal treatment station 3 with three different inlet temperatures, to which the graphical representation according to FIG. 3a belongs. In all three cases, the transport speed of the nonwoven web 5 is the same and constant. It can be seen in FIG. 3a that the nonwoven web 5 in the thermal treatment station enters a preheating temperature T v which is the same in all three cases and which is constant. In this respect, constant preheating is achieved, even if the inlet temperatures of the nonwoven web 5 are different.
- the treatment section for the nonwoven web 5 on the abscissa axis corresponds to the section L 1 to L 2 .
- the nonwoven web may have been introduced into the thermal treatment station at different speeds V 1 , V 2 or V 3 and constant inlet temperature.
- the treatment section ensures that the outlet temperature and thus the preheating temperature T v of the nonwoven web 5 is the same, even if, beyond the illustration in FIG. 3b, the nonwoven web 5 leaving a nonwoven forming station is the result a malfunction must be stopped. It is understood that the length of the treatment section can be changed in the thermal treatment station.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Treatment Of Fiber Materials (AREA)
Description
- Fig. 1
- das Schema einer Anlage zur Durchführung des erfindungsgemäßen Verfahrens mit Einrichtung für die Bondierung der Vliesbahn,
- Fig. 2
- das Schema einer Anlage für die Durchführung des erfindungsgemäßen Verfahrens mit Einrichtung für die Reckung der Vliesbahn und
- Fig. 3
- mit den Teilfig. 3a und 3b graphische Darstellungen zur Erläuterung des erfindungsgemäßen Verfahrens.
Claims (14)
- Verfahren zur thermomechanischen Behandlung einer Vliesbahn, die aus Filamenten und/oder Fasern aus thermoplastischem Kunststoff besteht, im Durchlaufverfahren, wobei die Vliesbahn bei der thermomechanischen Behandlung kontinuierlich und mit gleichförmiger Geschwindigkeit bewegt und zuerst eine thermische Behandlungsstation passiert sowie in dieser auf eine Vorwärmtemperatur erwärmt wird und die vorgewärmte Vliesbahn der mechanischen Behandlung zumindest in Form einer Reckung in Längs- und/oder Querrichtung unterworfen wird, dadurch gekennzeichnet, daß die Vliesbahn zur Vorwärmung von einem Gasstrom vorgegebener Gasstromgeschwindigkeit und Gasstromtemperatur durchströmt wird und dabei die Gasstromtemperatur und die Gasstromgeschwindigkeit sowie die Behandlungsstrecke der Vliesbahn in der thermischen Behandlungsstation andererseits so gewählt werden, daß die Vorwärmtemperatur bei allen Geschwindigkeiten, welche die Vliesbahn betriebsmäßig annehmen kann, einschl. der Geschwindigkeit Null, die Temperatur des Schmelzpunktes der Filamente und/oder der Fasern nicht überschreitet.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Vliesbahn bei der betriebsmäßigen Behandlung mit einer gleichförmigen Geschwindigkeit bewegt wird, die den üblichen Durchlaufgeschwindigkeiten entspricht.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Vliesbahn in der thermischen Behandlungsstation auf einem durchströmbaren Transportband geführt und von oben nach unten von dem Gasstrom durchströmt wird.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Vliesbahn in der thermischen Behandlungsstation zwischen zwei durchströmbaren Transportbändern geführt und von oben nach unten sowie von unten nach oben von dem Gasstrom durchströmt wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Vliesbahn nacheinander von oben nach unten bzw. von unten nach oben, oder in umgekehrter Folge, von dem Gasstrom durchströmt wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Vliesbahn am gleichen Ort sowie zu gleicher Zeit in der thermischen Behandlungsstation von einem Gasstrom durchströmt wird.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Vliesbahn bei der mechanischen Behandlung erst mit Bondingpunkten versehen und danach der Reckung in Längsrichtung und/oder Querrichtung unterworfen wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Gasstromtemperatur und die Gasstromgeschwindigkeit einerseits sowie die Behandlungsstrecke der Vliesbahn in der thermischen Behandlungsstation andererseits so gewählt werden, daß die Vorwärmtemperatur bei allen Geschwindigkeiten welche die Vliesbahn betriebsmäßig annehmen kann, einschließlich der Geschwindigkeit Null, mit der Gasstromtemperatur praktisch übereinstimmt.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Gasstromtemperatur, die Gasstromgeschwindigkeit und die Behandlungsstrecke der Vliesbahn in der thermischen Behandlungsstation unterschiedlichen thermoplastischen Kunststoffen und/oder unterschiedlichen Vliesbahnprodukten angepaßt wird.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß mit einem Luftstrom als Gasstrom gearbeitet wird.
- Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß mit einem trockenen Luftstrom als Gasstrom gearbeitet wird.
- Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß mit einem sauerstofffreien Gasstrom gearbeitet wird.
- Anlage für die Durchführung eines Verfahrens zur thermomechanischen Behandlung einer Vliesbahn nach einem der Ansprüche 1 bis 12, mit einer thermischen Behandlungsstation für die Vliesbahn und einer mechanischen Behandlungsstation zumindest in Form einer Reckanlage, dadurch gekennzeichnet, daß die thermische Behandlungsstation (3) mit einer Einrichtung (6) für die Durchströmung der Vliesbahn von einem Gasstrom vorgegebener Gasstromgeschwindigkeit und Gasstromtemperatur versehen ist und die Vliesbahn praktisch mit der in der thermischen Behandlungsstation (3) eingestellten Vorwärmtemperatur der mechanischen Behandlungsstation (4) zuführbar ist.
- Anlage nach Anspruch 13, dadurch gekennzeichnet, daß die mechanische Behandlungsstation der Reckanlage vorgeschaltete Bondingwalzen aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19527057A DE19527057C2 (de) | 1995-07-25 | 1995-07-25 | Verfahren zur thermomechanischen Behandlung einer Vliesbahn aus thermoplastischem Kunststoff und Anlagen für die Durchführung des Verfahrens |
DE19527057 | 1995-07-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0757126A1 EP0757126A1 (de) | 1997-02-05 |
EP0757126B1 true EP0757126B1 (de) | 1999-06-16 |
Family
ID=7767676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96111728A Expired - Lifetime EP0757126B1 (de) | 1995-07-25 | 1996-07-20 | Verfahren zur thermomechanischen Behandlung einer Vliesbahn aus thermoplastischem Kunststoff und Anlagen für die Durchführung des Verfahrens |
Country Status (9)
Country | Link |
---|---|
US (1) | US5913997A (de) |
EP (1) | EP0757126B1 (de) |
KR (1) | KR100381947B1 (de) |
CA (1) | CA2191364C (de) |
DE (1) | DE19527057C2 (de) |
DK (1) | DK0757126T3 (de) |
ES (1) | ES2135142T3 (de) |
MX (1) | MX9702032A (de) |
WO (1) | WO1997005312A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4191855B2 (ja) * | 1999-08-24 | 2008-12-03 | 新日本石油株式会社 | 横延伸不織布の製造方法及び横延伸装置 |
US20040102125A1 (en) * | 2002-11-27 | 2004-05-27 | Morman Michael Tod | Extensible laminate of nonwoven and elastomeric materials and process for making the same |
EP1610932B1 (de) * | 2003-04-02 | 2010-08-18 | Pantex International S.p.A. | Verfahren und vorrichtung zur herstellung einer perforierten stoffbahn |
EP2009162A3 (de) * | 2003-12-05 | 2009-08-19 | Phoenix Intellectuals and Technologies Management, Inc. | Verfahren zur Herstellung eines elastischen Vliesnetzes |
DE102004006373B4 (de) | 2004-02-09 | 2014-12-31 | Reifenhäuser GmbH & Co Maschinenfabrik | Verfahren zur Herstellung eines Spinnvlieses aus Filamenten |
US20060128247A1 (en) * | 2004-12-14 | 2006-06-15 | Kimberly-Clark Worldwide, Inc. | Embossed nonwoven fabric |
EP1930492B1 (de) * | 2006-12-06 | 2010-09-29 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses |
US8744251B2 (en) * | 2010-11-17 | 2014-06-03 | 3M Innovative Properties Company | Apparatus and methods for delivering a heated fluid |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH520566A (de) * | 1970-02-20 | 1971-06-15 | Breveteam Sa | Verfahren zur Herstellung eines reliefartig strukturierten Faserverbundstoffes und nach dem Verfahren hergestellter Faserverbundstoff |
CA948388A (en) * | 1970-02-27 | 1974-06-04 | Paul B. Hansen | Pattern bonded continuous filament web |
BE794339A (fr) * | 1972-01-21 | 1973-07-19 | Kimberly Clark Co | Matieres non tissees |
US3949128A (en) * | 1972-08-22 | 1976-04-06 | Kimberly-Clark Corporation | Product and process for producing a stretchable nonwoven material from a spot bonded continuous filament web |
JPS5246181A (en) * | 1975-10-08 | 1977-04-12 | Toyo Boseki | Manufacture of unwoven fabrics |
NL7703952A (nl) * | 1976-04-15 | 1977-10-18 | Monsanto Co | Werkwijze voor het binden of hechten van een niet geweven baan of vel, alsmede het produkt van deze werkwijze. |
US4315965A (en) * | 1980-06-20 | 1982-02-16 | Scott Paper Company | Method of making nonwoven fabric and product made thereby having both stick bonds and molten bonds |
BR8302903A (pt) * | 1983-05-31 | 1985-01-15 | Johnson & Johnson | Processo para produzir um pano nao-tecido termo-unido elastico e pano nao-tecido termo-unido elastico |
US5399174A (en) * | 1993-04-06 | 1995-03-21 | Kimberly-Clark Corporation | Patterned embossed nonwoven fabric, cloth-like liquid barrier material |
DE19501125C2 (de) * | 1995-01-17 | 1997-10-16 | Reifenhaeuser Masch | Verfahren zur Herstellung einer Vliesbahn aus thermoplastischen Polymerfilamenten |
-
1995
- 1995-07-25 DE DE19527057A patent/DE19527057C2/de not_active Expired - Lifetime
-
1996
- 1996-07-20 MX MX9702032A patent/MX9702032A/es unknown
- 1996-07-20 US US08/737,384 patent/US5913997A/en not_active Expired - Lifetime
- 1996-07-20 EP EP96111728A patent/EP0757126B1/de not_active Expired - Lifetime
- 1996-07-20 KR KR1019960707111A patent/KR100381947B1/ko not_active IP Right Cessation
- 1996-07-20 WO PCT/DE1996/001371 patent/WO1997005312A1/de active Application Filing
- 1996-07-20 DK DK96111728T patent/DK0757126T3/da active
- 1996-07-20 ES ES96111728T patent/ES2135142T3/es not_active Expired - Lifetime
- 1996-07-20 CA CA002191364A patent/CA2191364C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2135142T3 (es) | 1999-10-16 |
DE19527057C2 (de) | 2002-06-27 |
DE19527057A1 (de) | 1997-02-06 |
DK0757126T3 (da) | 1999-11-22 |
KR100381947B1 (ko) | 2003-07-12 |
WO1997005312A1 (de) | 1997-02-13 |
CA2191364A1 (en) | 1997-01-26 |
US5913997A (en) | 1999-06-22 |
MX9702032A (es) | 1997-08-30 |
EP0757126A1 (de) | 1997-02-05 |
CA2191364C (en) | 2000-02-22 |
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