WO2008003437A1 - Verfahren und vorrichtung zum schmelzspinnen und ablegen synthetischer filamente zu einem vlies - Google Patents
Verfahren und vorrichtung zum schmelzspinnen und ablegen synthetischer filamente zu einem vlies Download PDFInfo
- Publication number
- WO2008003437A1 WO2008003437A1 PCT/EP2007/005798 EP2007005798W WO2008003437A1 WO 2008003437 A1 WO2008003437 A1 WO 2008003437A1 EP 2007005798 W EP2007005798 W EP 2007005798W WO 2008003437 A1 WO2008003437 A1 WO 2008003437A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filaments
- nonwoven webs
- nonwoven
- melt
- nozzle
- Prior art date
Links
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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- 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
- D01D5/08—Melt spinning methods
Definitions
- the invention relates to a method for melt spinning and depositing synthetic filaments into a nonwoven according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 10.
- nonwovens For the production of nonwovens, it is known that a multiplicity of synthetic filaments are extruded from a polymer melt and, after cooling by means of a take-off agent, are deposited on a deposition belt to form the nonwoven.
- the filaments are produced by extrusion means, which essentially contain a row-shaped arrangement of nozzle bores, so that the filaments are produced as a curtain and deposited on the depositing belt.
- Winding devices in which the nonwoven web must be treated in its entire production width are thus in To stabilize corresponding greater expenditure on equipment, for example, to counteract a deflection of extending over the entire production width roller.
- the spreading of the filament groups leads to more or less pronounced differences in thickness in the nonwoven web.
- irregularities in the storage are unavoidable. When solidifying the nonwoven irregularities in the nonwoven web can not be excluded due to the differences in thickness.
- a further object of the invention is to design the method for melt-spinning and depositing synthetic filaments into a nonwoven and the device for carrying out the method such that the most flexible possible production of the nonwoven fabric is possible even at high production rates.
- the invention is based on the finding that the produced nonwoven webs are cut into so-called use for the most part before finishing.
- the widths of the benefits are generally well below the production width of the nonwoven web.
- the device according to the invention According to the device according to the invention, it is possible to produce nonwoven webs which are matched in their production width to the later utility width.
- the filaments of the filament groups are deposited side by side to form separate nonwoven webs and the nonwoven webs are guided parallel to each other.
- the nonwoven is thus advantageously formed by a plurality of nonwoven webs, which are received and guided parallel to each other on the storage belt.
- nonwoven webs with the same production width or with different production widths in each case.
- Two, three or even more nonwoven webs can be laid and guided parallel to one another on the storage belt, whereby a total production width of the machine of 10 m or more can be used.
- a distance between the nonwoven webs is maintained, so that in each case a gap arises between the nonwoven webs on the surface of the deposition tape.
- the productivity in the production of a nonwoven fabric is most favorable when the production width of a single nonwoven web exceeds a minimum.
- the storage of the filaments is set such that the laid by a filament nonwoven web occupies a production width in the range of 2 m to a maximum of 6 m on the storage belt.
- the further treatment of the nonwoven webs can be performed together or separately.
- the nonwoven webs are removed parallel to one another from the deposition tape and together in one or more treatment steps further treated.
- the same fleece properties can be produced in each of the nonwoven web.
- nonwoven webs are removed from the storage belt and treated separately in one or more treatment steps.
- Each of the treatment steps of the nonwoven web can be adjusted individually to the respective desired properties of the finished nonwoven fabric.
- the nonwoven webs are preferably first solidified after leaving the deposition belt and wound into a winding.
- the method variant is particularly advantageous in which the filaments are extruded through a plurality of juxtaposed nozzle plates having a multiplicity of nozzle bores, the filaments extruded through a die plate forming one of the filament groups.
- the nozzle plates are substantially adapted to the production widths of the nonwoven webs to facilitate the handling of the nozzle plates.
- the nozzle plates could be held by a spinning beam or by several juxtaposed spin bars.
- one of the spinning beams, whose nozzle plate is to be maintained can be shut off from the melt feed, so that the nonwoven production can be continued with the adjacent spinning beams.
- the spinning bars are preferably connected to a melt source, each supplying a type of polymer melt.
- the flexibility in the production of the nonwoven can also be expanded by supplying the spinning bars with polymer melts through a plurality of melt sources so that nonwoven webs having different types of polymers can be produced.
- the device according to the invention has extrusion means and take-off means in such an arrangement above the deposit belt, so that the filaments of the filament groups are deposited next to each other to separate nonwoven webs and that the nonwoven webs are guided parallel to each other.
- the distance between adjacent nonwoven webs is in the range of 0.1 m to 0.4 m, so that a mutual influence of the nonwoven webs on the storage belt or the leadership of the filaments is excluded.
- the extrusion means preferably have an elongated extent to lay each of the filament groups associated with the extruded filaments in a nonwoven web on the deposition belt occupying a production width in the range of 2 m to 6 m.
- the predetermined by the extrusion means distribution of the filaments is divided evenly over the production width of the nonwoven web.
- the depositing belt is followed by a plurality of treatment devices to a common or separate further treatment of the nonwoven web.
- the treatment devices comprise at least one solidifying device and one winding device, wherein the nonwoven webs are consolidated together and wound up together as required. It is, however possible to design the treatment facilities such that the nonwoven webs are each solidified separately and wound separately. This makes it possible to produce different fleece qualities in the nonwoven webs.
- the extrusion means are formed by a plurality of juxtaposed nozzle plates, each having a plurality of nozzle bores, wherein the nozzle bores are preferably contained in a row-like arrangement in the nozzle plate. This can be produced in high density and uniformity over a non-woven web defining production width.
- the nozzle plates can in this case be held in rows by a spinning beam or by separate juxtaposed spinning beams.
- the nozzle plates are preferably used to extrude the extruded filaments of filament groups from a polymer melt.
- the spinning beams are preferably supplied by a plurality of melt sources.
- metering pumps are each assigned to one of the spinning beam for melt supply, wherein the spinning beam has a segmental distribution device upstream of the nozzle plate.
- the production width of the nonwoven web within the filament group can be varied by switching individual segments on and off. This represents a further flexibility in the production of nonwovens and nonwoven webs with different production widths.
- Fig. 1 shows schematically a view of a first embodiment of the device according to the invention
- Fig. 2 shows schematically a plan view of a further embodiment of the device according to the invention
- FIG. 3 schematically shows a plan view of a further embodiment of the device according to the invention
- FIG. 4 schematically shows a cross-sectional view of a further embodiment of a device according to the invention
- FIG. 5 schematically shows a cross-sectional view of a further embodiment of the device according to the invention
- FIG. 6 schematically shows a side view of a further embodiment of the device according to the invention contraption
- FIG. 7 is a schematic plan view of the embodiment of FIG. 6
- Fig. 1 is a schematic view of a first embodiment of the device according to the invention for carrying out the method according to the invention is shown.
- the embodiment of the device according to the invention comprises a storage belt 1, which is formed of a gas-permeable material and is driven in the direction of the arrow with a uniform guide speed.
- the extrusion means 2 and the withdrawal means 3 are arranged such that a plurality of filaments in guernf ⁇ 'RMIG adjacent-trained filament 4.1 and 4.2 for each of a nonwoven web 5.1 and 5.2 are guided on the deposition belt.
- the extrusion means 2 are also two spinning formed beams 7.1 and 7.2, which are each connected via a melt supply 6 with a melt source, not shown here.
- the spinning beams 7.1 and 7.2 have at their lower sides a nozzle plate with a plurality of nozzle bores in order to extrude the filaments of the filament groups 4.1 and 4.2 from a polymer melt.
- the discharge means 3 is formed by two discharge nozzles 17.1 and 17.2 arranged in a row next to each other. Between the spinning beam 7.1 and 7.2 and the exhaust nozzles 17.1 and 17.2 a cooling section for cooling the freshly extruded filaments is provided.
- the exhaust nozzles 17.1 and 17.2 are each connected to a source of compressed air (not shown here) to withdraw the filaments of the filament groups 4.1 and 4.2 respectively from the spinning area and to demand in the direction of the storage belt 1.
- the filament group 4.1 is guided through the draw-off nozzle 17.1.
- the filament group 4.2 is guided through the draw-off nozzle 17.2 to the nonwoven web 5.2.
- the nonwoven webs 5.1 and 5.2 are formed side by side on the storage belt 1 and discharged with the storage belt 1 in the arrow direction. Between the nonwoven webs 5.1 and 5.2, a distance A is formed, which is preferably in the range of 0.1 m to 0.4 m, in particular between 0.2 m and 0.3 m. Due to the distance A between the nonwoven webs 5.1 and 5.2 formed on the storage belt 1 a gap, so that contact between the nonwoven webs 5.1 and 5.2 is excluded.
- the nonwoven webs 5.1 and 5.2 each have a production width, which is marked in Fig. 1 with the code letters Pl and P2.
- the nonwoven web 5.1 has the production width P1 and the nonwoven web 5.2 the production width P2.
- the production widths Pl and P2 of the nonwoven webs 5.1 and 5.2 are preferably of the same size. However, it is also possible to carry out the production widths of the nonwoven webs 5.1 and 5.2 in different widths. Accordingly, a total production width, which is identified by the code letter G in FIG. 1, results for the production of the nonwoven.
- the total production width G is thus calculated from the sum of the production widths of the nonwoven webs 5.1 and 5.2 Pl and P2 and the distance A.
- the extrusion means 2 and the removal means 3 are operated in parallel under preferably identical operating conditions, so that each of the nonwoven webs 5.1 and 5.2 have the same nonwoven properties.
- the nonwoven storage is substantially identical to the embodiment of FIG. 1, so that at this point reference is made to the above description and only the differences will be explained.
- the guided on the storage belt 1 nonwoven webs 5.1 and 5.2 are removed together by driving the storage tape and subsequently fed to several treatment facilities.
- two successive treatment devices 8.1 and 8.2 are shown by way of example.
- the nonwoven webs 5.1 and 5.2, after leaving the depositing belt 1, are fed together in succession to the treatment devices 8.1 and 8.2 in order to be treated together and simultaneously.
- the treatment may, for example, be a solidification of the fiber composite within the nonwoven web. Between the nonwoven webs 5.1 and 5.2 a distance is maintained during the further treatment, so that a substantially parallel run of the nonwoven webs 5.1 and 5.2 is ensured.
- FIG. 3 shows a further exemplary embodiment of a device according to the invention for carrying out the method according to the invention.
- the version 3 is substantially identical to the embodiment of FIG. 2, so that reference is made to the above description at this point and only the differences will be explained.
- the nonwoven webs 5.1 and 5.2 are extruded through a spinning beam 7 with two formed as nozzle plates extrusion means.
- the nozzle plates 10.1 and 10.2 are held for this purpose on the underside of the spinneret 7.
- Such an extrusion agent will be described in more detail below, so that at this point no further explanation takes place.
- each nonwoven web 5.1 and 5.2 are each assigned separate treatment facilities. This is how the nonwoven web becomes
- the nonwoven web 5.2 is through the treatment facilities 8.3 and
- the treatment devices 8.1 and 8.3 as well as the treatment devices 8.2 and 8.4 may be identical, so that, for example, in one of the first treatment steps, a solidification and in a second treatment step, a winding takes place.
- each of the nonwoven webs 5.1 and 5.2 can be treated individually, so that a nonwoven with different properties can be produced.
- FIG. 4 schematically shows an extrusion means, as would be used, for example, for extruding the filament groups in the exemplary embodiment according to FIG. 3.
- the extrusion means is formed by a spinning beam 7. Within the spinneret 7, two juxtaposed nozzle packages 9.1 and 9.2 are held on its underside. Each of the nozzle packages 9.1 and 9.2 is via a plurality of metering pumps 12 and a plurality of melt distributors 13. connected to a melt source 14.
- a melt source 14 By way of example, an extruder, in which a plastic granulate is melted to form a polymer melt, is shown as the melt source 14.
- the nozzle packages 9.1 and 9.2 are each held on the underside of the heated spinning beam 7 and formed by a plurality of plates. At the bottom, the nozzle packages 9.1 and 9.2 each have a nozzle plate 10.1 and 10.2, which contain a plurality of nozzle bores 23, from which the filaments of the filter groups 4.1 and 4.2 are extruded. The nozzle bores 23 are held in the nozzle plates 10.1 and 10.2 in a row-like arrangement, so that the extruded filaments form a filament curtain.
- the nozzle plate 10.1 and 10.2 are each preceded by a distribution plate system 11.1 and 11.2, which has a plurality of melt inlets 23, which are connected by segmental distribution spaces with the nozzle bores of the nozzle plate 10.1 and 10.2.
- the embodiment of the extrusion means shown in Fig. 4 is particularly suitable for uniformly extruding a plurality of filaments within a large production width. Due to the majority of the metering pumps and the segmental distribution of the melt, a uniform supply of the melt over all the nozzle bores is achieved, so that each of the filaments within the filament groups 4.1 and 4.2 are extruded with high consistency.
- FIG. 5 another embodiment of an extrusion means is shown, as it would be used for example in the embodiments of FIG. 1 or 2.
- the exemplary embodiment shown in FIG. 5 is essentially identical to the exemplary embodiment according to FIG. 4, so that at this point reference is made to the aforementioned description and only the differences will be explained below.
- the nozzle packages 9.1 and 9.2 are each held by separate spinning beams 7.1 and 7.2.
- the nozzle packages 9.1 and 9.2 associated metering pumps 12 and melt distributors 13.1 and 13.2 are arranged.
- the spinning beam 7.1 is connected to the melt source 14.1 via the melt distributor 13.1 and the melt line 15.1.
- the metering pumps 12 in the spinning beam 7.2 are supplied via the melt distributor 13.2 and the melt line 15.2 through the melt source 14.2 with a polymer melt.
- two different filament groups 4.1 and 4.2 can be produced by the spinning beams 7.1 and 7.2 in each case in their polymer composition. This makes it possible to achieve a high level of flexibility in the production of nonwovens, in particular in large plants.
- FIGS. 6 and 7 show a further exemplary embodiment of a device according to the invention for carrying out the method according to the invention, in which the nonwoven webs 5.1 and 5.2 are wound up into wraps at the end of a further treatment.
- Fig. 6 the embodiment is shown schematically in a side view and in Fig. 7 in a plan view.
- the following description applies insofar no reference is made to one of the figures, for both figures.
- filament groups 4.1 and 4.2 To extrude the filament groups 4.1 and 4.2, two spinnerettes 7.1 and 7.2 arranged in series are provided, as already described, for example, previously.
- the spinning beams 7.1 and 7.2 are connected via melt feeds 6 with a melt source.
- an injection 16 is provided, through which a transverse to the filament strands directed cooling air flow is generated.
- the Anblasung 16 here preferably extends over the entire width of the filament groups 4.1 and 4.2.
- two exhaust nozzles 17.1 and 17.2 is provided as a withdrawal means, through which the filaments of the filament groups 4.1 and 4.2 withdrawn and conveyed to the storage belt 1.
- the nonwoven webs 5.1 and 5.2 are formed on the surface of the depositing belt 1.
- the nonwoven webs 5.1 and 5.2 are guided by the storage belt 1 evenly in the direction of arrow for further treatment.
- the solidification device 18 On the discharge side of the storage belt 1 is assigned a hardening device 18.
- the solidification device 18 has two calender rolls 19.1 and 19.2 extending substantially over the entire production width.
- the nonwoven webs 5.1 and 5.2 are guided for solidification by the nip formed between the calender rolls 19.1 and 19.2.
- the guide rollers 10.1 and 10.2 are provided to supply the nonwoven webs 5.1 and 5.2 under preferably uniform tension of the take-up device 21.
- the nonwoven webs 5.1 and 5.2 are wound into separate wigs 22.1 and 22.2, respectively.
- the rolls 22.1 and 22.2 are preferably driven together via a spindle for this purpose.
- the winding 22.1 and 22.2 can be wound both on separate winding carrier or on a common winding carrier.
- the embodiment shown in FIGS. 6 and 7 is thus suitable, for example, for producing two nonwoven webs parallel next to one another, wherein each of the nonwoven web has, for example, a production width of five meters.
- the number of nonwoven webs made simultaneously and in parallel is exemplary.
- the method according to the invention and the device according to the invention are not limited to a specific number of simultaneously produced nonwoven webs. So read sen three, four or even more nonwoven webs parallel to each other on a shelf produce.
- the invention also covers such solutions in which the storage belt are formed by a storage drum or other continuous storage means.
- the method according to the invention and the device according to the invention are particularly suitable for producing nonwovens in high production capacity.
- entire production widths up to 10 m and above are possible, within the entire production width, a nonwoven fabric with high uniformity can be produced.
- the entire production width can also be used to produce nonwovens of different properties simultaneously within the entire production width.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07764961A EP2035610A1 (de) | 2006-07-01 | 2007-06-29 | Verfahren und vorrichtung zum schmelzspinnen und ablegen synthetischer filamente zu einem vlies |
JP2009517010A JP2009541608A (ja) | 2006-07-01 | 2007-06-29 | 合成フィラメントを溶融紡績しかつフリースに積層する方法と装置 |
US12/339,390 US20090152762A1 (en) | 2006-07-01 | 2008-12-19 | Method and device for melt spinning and depositing synthetic filaments into a non-woven material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006030482.9 | 2006-07-01 | ||
DE102006030482A DE102006030482A1 (de) | 2006-07-01 | 2006-07-01 | Verfahren und Vorrichtung zum Schmelzspinnen und Ablegen synthetischer Filamente zu einem Vlies |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/339,390 Continuation US20090152762A1 (en) | 2006-07-01 | 2008-12-19 | Method and device for melt spinning and depositing synthetic filaments into a non-woven material |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008003437A1 true WO2008003437A1 (de) | 2008-01-10 |
Family
ID=38606826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/005798 WO2008003437A1 (de) | 2006-07-01 | 2007-06-29 | Verfahren und vorrichtung zum schmelzspinnen und ablegen synthetischer filamente zu einem vlies |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090152762A1 (de) |
EP (1) | EP2035610A1 (de) |
JP (1) | JP2009541608A (de) |
KR (1) | KR20090024304A (de) |
CN (1) | CN101484624A (de) |
DE (1) | DE102006030482A1 (de) |
WO (1) | WO2008003437A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102370290B1 (ko) * | 2013-02-22 | 2022-03-04 | 비엘 테크놀러지스 인크. | 바이오필름 지지용 맴브레인 조립체 |
US10160679B2 (en) | 2014-03-20 | 2018-12-25 | Bl Technologies, Inc. | Wastewater treatment with primary treatment and MBR or MABR-IFAS reactor |
CN108085795B (zh) * | 2017-12-29 | 2024-06-04 | 苏州爱美纤维科技有限公司 | 一种给棉设备 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1560790A1 (de) * | 1965-07-01 | 1971-02-25 | Lutravil Spinnvlies | Verfahren und Vorrichtung zur Herstellung von Vliesstoffen nach dem Schmelzspinnverfahren |
DE2532900A1 (de) * | 1974-07-25 | 1976-02-05 | Toyo Boseki | Verfahren zur herstellung von spinnvliesen |
DE2749266A1 (de) * | 1976-11-06 | 1978-05-11 | Ciba Geigy Ag | Verstaerkte kunststoffe |
JPS6170060A (ja) * | 1984-09-13 | 1986-04-10 | 旭化成株式会社 | タテ強力の優れた不織布の製造方法 |
EP0701010A1 (de) * | 1990-10-17 | 1996-03-13 | Exxon Chemical Patents Inc. | Schmelzblasdüse |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1950669C3 (de) * | 1969-10-08 | 1982-05-13 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zur Vliesherstellung |
-
2006
- 2006-07-01 DE DE102006030482A patent/DE102006030482A1/de not_active Withdrawn
-
2007
- 2007-06-29 WO PCT/EP2007/005798 patent/WO2008003437A1/de active Application Filing
- 2007-06-29 CN CNA2007800250984A patent/CN101484624A/zh active Pending
- 2007-06-29 KR KR1020097002049A patent/KR20090024304A/ko not_active Application Discontinuation
- 2007-06-29 EP EP07764961A patent/EP2035610A1/de not_active Withdrawn
- 2007-06-29 JP JP2009517010A patent/JP2009541608A/ja active Pending
-
2008
- 2008-12-19 US US12/339,390 patent/US20090152762A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1560790A1 (de) * | 1965-07-01 | 1971-02-25 | Lutravil Spinnvlies | Verfahren und Vorrichtung zur Herstellung von Vliesstoffen nach dem Schmelzspinnverfahren |
DE2532900A1 (de) * | 1974-07-25 | 1976-02-05 | Toyo Boseki | Verfahren zur herstellung von spinnvliesen |
DE2749266A1 (de) * | 1976-11-06 | 1978-05-11 | Ciba Geigy Ag | Verstaerkte kunststoffe |
JPS6170060A (ja) * | 1984-09-13 | 1986-04-10 | 旭化成株式会社 | タテ強力の優れた不織布の製造方法 |
EP0701010A1 (de) * | 1990-10-17 | 1996-03-13 | Exxon Chemical Patents Inc. | Schmelzblasdüse |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 198621, Derwent World Patents Index; AN 1986-134033, XP002456701 * |
Also Published As
Publication number | Publication date |
---|---|
US20090152762A1 (en) | 2009-06-18 |
KR20090024304A (ko) | 2009-03-06 |
EP2035610A1 (de) | 2009-03-18 |
CN101484624A (zh) | 2009-07-15 |
DE102006030482A1 (de) | 2008-01-03 |
JP2009541608A (ja) | 2009-11-26 |
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