CN203475226U - Steam blow box - Google Patents
Steam blow box Download PDFInfo
- Publication number
- CN203475226U CN203475226U CN201290000211.XU CN201290000211U CN203475226U CN 203475226 U CN203475226 U CN 203475226U CN 201290000211 U CN201290000211 U CN 201290000211U CN 203475226 U CN203475226 U CN 203475226U
- Authority
- CN
- China
- Prior art keywords
- steam
- steam blast
- housing
- fiber
- web
- 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 - Fee Related
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/003—Indicating or regulating the moisture content of the layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/12—Crêping
- B31F1/126—Crêping including making of the paper to be crêped
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/14—Making cellulose wadding, filter or blotting paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/008—Steam showers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G7/00—Damping devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/0073—Accessories for calenders
- D21G1/0093—Web conditioning devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/24—Sheet material
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/26—Composites
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The utility model relates to a steam blow box (I, II, III, IV) for steaming a sheet of fibrous material (1), in particular a sheet of tissue, for the purpose of increasing the dry content and moisture cross-profiling during the manufacture of the sheet of tissue. The steam blow box is provided with a housing (5) which is associated with the sheet of fibrous material (1) to be steamed, is located at a distance (s) from the sheet of fibrous material (1) to be steamed and has a length (C) in the machine direction (MD), and wherein the housing (5) encloses a steam chamber (7) provided with steam outlets (10) and thus forms a steaming section (B) associated with the sheet of fibrous material (1) to be steamed. According to the utility model, the steaming section (B) featuring steam outlets (10) is associated with a main steam chamber (8) arranged next to the steam chamber (7), and the steaming section (B) in the machine direction (MD) amounts to only about 10 to 50%, preferably 10 to 30%, of the total length (C) of the housing (5), in the machine direction (MD), and is also concentrated only at a single position of the housing (5).
Description
Technical field
The utility model relates to a kind of for steam-blown fiber width, the steam blast case of web of tissue paper especially, its objective is and in the process of manufacturing web of fiber, improve dry matter content and form specific laterally Humidity Features, it has housing, described housing has spacing and has the length stretching along machine direction towards the web of fiber for the treatment of steam blast, and wherein, described housing surrounds out steaming chamber, and described steaming chamber is provided with steam outlet and forms thus the steam blast section matching with the web of fiber for the treatment of steam blast.
Background technology
Steam blast case as breadth processing device is applied in web of fiber manufacturing equipment, to improve dry matter content and form specific laterally Humidity Features.
By DE A110255716 known this in calender field for the breadth processing device of smooth web of fiber, and by DE-A110357288 known this in forcing press field for making the breadth processing device of web of fiber dehydration.
When manufacturing web of tissue paper, seldom use steam blast case, because steam blast case is because the material blends of the specific type for web of tissue paper manufacture is subject to severe contamination.A very large problem is, fiber is departed from from web of fiber and pollutes steam blast case by steam blast or from the vapor stream of steam blast case output.
This pollution may be so serious, to such an extent as to must during routine equipment downtime, must clean, with the operation troubles of avoiding self being caused by steam blast case.If rock steam blast case for cleaning purpose at run duration, can change the running parameter having set and again cause fault.This fault may be that breadth is torn or poor horizontal Humidity Features.
In reality, apply a kind of steam blast case, wherein, steam outlet has been placed in the front end of blowing case and thus at casing front end blowing steam.Therefore as described in aforementioned, at blowing case front end, had fiber to depart from from breadth, these fibers can the ensuing regions of severe contamination steam blast case.
Known a kind of embodiment, wherein, steam blast section is arranged on wider region or also and can be arranged in a plurality of regions.Especially when also having other steam outlets or carry out steam blast on longer section, current outlet may be plugged or block.Thus, the function limitation of steam blast case, even inefficacy.In addition, the vapor stream of the steam outlet that the fiber having spun off may be by downstream clings on breadth, and this can cause the Quality Down of the breadth manufactured.
Utility model content
Therefore, problem to be solved in the utility model is to provide a kind of steam blast case, wherein avoids the shortcoming described in background technology.
Described technical problem is solved by a kind of steam blast case.According to the utility model, stipulate, described steam blast case is for steam-blown fiber width, web of tissue paper especially, its objective is and in the process of manufacturing web of fiber, improve dry matter content and form specific laterally Humidity Features, it has housing, described housing has spacing and has the length stretching along machine direction towards the web of fiber for the treatment of steam blast, and wherein, described housing surrounds out steaming chamber, and described steaming chamber is provided with steam outlet and forms thus the steam blast section matching with the web of fiber for the treatment of steam blast.The described steam blast section with steam outlet is attached troops to a unit in the main steam chamber with described steaming chamber arranged adjacent, wherein, described steam blast section along machine direction, only occupy described housing the total length stretching along machine direction approximately 10 to 50%, preferably 10 to 30%, and also only concentrate on a position of described housing.
Advantage according to solution of the present utility model is, the steam of being exported by steam blast case only concentrates on along on the shorter section of machine direction.Thus, the fiber departing from from web of fiber can not cause or only cause less pollution.
At this advantageously, described steam blast section has the length along machine direction, and this length is about 20 to 200mm, and preferably 20 to 100mm, and the length of described housing is about 200 to 600mm, and preferably 200 to 400mm.Very advantageously, described steam blast section is only positioned on the end regions of described housing.
Inventor's discovery of utility model, cotton paper has very open structure and it does not need the steam blast section of normal length as described in the background art or so long vapor action section completely.By according to shorter steam blast section of the present utility model and steam blast section is only concentrated on a position of steam blast tank shell, thereby improve breadth dry matter content and web of tissue paper directed through pressure roller and the position that wrinkle cylinder is extruded relatively form specific laterally Humidity Features, can more effectively carry out the manufacture of cotton paper thus.
In another favourable design of steam blast case, in the end regions of described housing, the end of described steam blast section has to the edge of described housing the distance stretching along machine direction, and this distance is about 20 to 200mm, and preferably 50 to 150mm.This means, only the steam outlet at rear is settled with described interval.
Advantageously, the steam outlet of described steam blast section is embarked on journey and is arranged, and wherein, multirow is favourable.According to the overall size of steam blast case, one to six row can be set, preferably one to four lines.In multirow, each nozzle is even interval each other preferably.
The steam outlet of steam blast section has respectively identical diameter.Described diameter is about 3 to 6mm, and preferably 3.5 to 4.5mm.These nozzles so apply steam, and the speed that steam is discharged from steam outlet is about 10 to 60m/s, and preferably 10 to 40m/s.Can guarantee thus very effectively web of fiber, especially web of tissue paper adds gentle humidification.Avoid on the other hand, at least reduced fiber and depart from from breadth.
The outer surface of described housing, at least towards the surface for the treatment of the web of fiber of steam blast, there is the roughness that is less than 10 μ m, thereby dirt is compared on the outer surface that less drops on steam blast tank shell with current techniques with other particulates.
In this regulation, the outer surface of described housing, at least polished towards the surface of web of fiber for the treatment of steam blast or be provided with the coating of anti-soil thing, for example tetrafluoroethylene (PTFE).Thus also can significant prolongation cleaning cycle.
In the favourable design of steam blast case, described housing towards treat the web of fiber of steam blast and cover steam inside chamber and main steam chamber on until the surface of described steam blast section is set to treat that the web of fiber of steam blast has approximately 5 to 30mm, preferably 15 to 25mm even interval.
In the alternative embodiment of steam blast case, with wherein have steam inside chamber with a determining deviation, (this spacing is about 10 to 30mm, preferably 10 to 20mm) surface of the remaining housing settled compares, and the surface towards treating the web of fiber of steam blast of the housing of described steam blast section or described main steam chamber is positioned to the web of fiber of operation less spacing.At this, the surface of the housing of described steam blast section or described main steam chamber exceeds a remaining surperficial segment distance, and this distance is about 5 to 15mm.
In another alternative embodiment contrary with aforementioned embodiments, with wherein have steam inside chamber with a determining deviation, (this spacing is about 5 to 30mm, preferably 15 to 25mm) surface of the remaining housing settled compares, the surface towards treating the web of fiber of steam blast of the housing of described steam blast section or described main steam chamber be positioned to operation web of fiber have larger spacing, wherein, the surface of the housing of described steam blast section or described main steam chamber is the rearmounted segment distance in remaining surface relatively, and this distance is about 5 to 15mm.This means, steam blast section is settled with larger spacing with respect to the web of fiber of operation.
According to the type of web of fiber and structure, select one in aforementioned three kinds of embodiments to be assembled in manufacturing equipment.
As previously mentioned, according to steam blast case of the present utility model, can be preferred for web of tissue paper.Be specially adapted to the web of tissue paper that the strong and surface density of gas permeability equals/be less than 30g/cm2.
By according to steam blast case of the present utility model, very effectively improve dry matter content and regulated specific laterally Humidity Features, surrounding environment and steam blast case self are not exceeded standard by the fiber coming off when the steam blast simultaneously, and ground is strong to be polluted.Breadth manufacture process can be carried out continuously thus.The quality of the breadth producing, especially web of tissue paper can improve therefrom.In addition,, also without additionally cleaning outside the cleaning cycle in plan, also obviously improved thus behavior in service (breadth behavior in service) now.
Accompanying drawing explanation
By embodiment, further set forth the utility model below, in the accompanying drawings:
Fig. 1 illustrate be arranged in tissue paper manufacturing equipment according to the schematic diagram of steam blast case I of the present utility model,
Fig. 2 illustrates according to the generalized section of the steam blast case II of the first embodiment of the present utility model,
Fig. 3 illustrates according to the generalized section of the steam blast case III of the second embodiment of the present utility model,
Fig. 4 illustrates according to the generalized section of the steam blast case IV of the 3rd embodiment of the present utility model
In these accompanying drawings, identical element is marked by respectively identical Reference numeral.
The specific embodiment
Fig. 1 illustrate be arranged in tissue paper manufacturing equipment according to steam blast case I of the present utility model (and described other embodiments II of steam blast case, III, IV).Described steam blast case is for steam blast and heating web of fiber 1, especially gas permeability are strong and surface density equals/be less than 30g/m
2cotton paper, for the manufacture process in fiber good fortune, improve dry matter content and form specific laterally Humidity Features.Steam blast case I has relatively short length C, and attaches troops to a unit as shown in Figure 1 in pressure roller 2, and web of fiber (being web of tissue paper) extends in this embodiment on pressure roller 2.Described pressure roller 2 is settled and together forms impression place 4 with wrinkle cylinder 3 towards wrinkle cylinder 3, by the breadth 1 of steam blast case I humidification heating in order to produce the cotton paper surface of desired wrinkling, and along traffic direction L or along machine direction MD operation through this impression place 4.
In Fig. 1, also clearly illustrate, compare the total length C of steam blast case I, only have very little one section or region for the steam blast of web of fiber 1.This section is known as steam blast section B hereinafter.Can obviously find out, steam blast section B only concentrates on a position of whole housing 5 of steam blast case I, and is positioned at the end regions 6 of steam blast case I.Along machine direction, MD sees, steam blast section B is only approximately 10 to 50% of housing 5 total length C, preferably 10 to 30%.
Fig. 2 is shown clearly in this first embodiment that is marked as the steam blast case of II.
In the end regions 6 of housing 5, the end of steam blast section B to the edge 11 of housing 5 is settled with the interval A stretching along machine direction MD.This interval A is about 20 to 200mm, and preferably 50 to 150mm.
In Fig. 2, also can identify 12 settings of embarking on journey of the steam outlet 10 of steam blast section B.Preferably consider to arrange one to four lines, but according to the size of steam blast case I or II, maximum six row 12 also can be set.
The face of above-mentioned 9 or housing 5 is polished or be provided with the coating of anti-soil thing, for example tetrafluoroethylene (PTFE).
In addition by Fig. 2, found out, housing 5 towards treat the web of fiber 1 of steam blast and cover inner plenum 7 and main gas tank 8 on until the surface 9 of steam blast section (B), be positioned to the web of fiber 1 for the treatment of steam blast and be s's uniformly-spaced.Interval is about 5 to 30mm, and preferably 15 to 25mm.
Fig. 3 illustrates another embodiment of steam blast case, and this steam blast case is marked as III.It has identical structure with steam blast case I and II in principle, yet at this, I compares with II with steam blast case, and the housing 5 of steam blast section B or main steam chamber 8 or 5.1 surface 9.1 are set to less to the interval of the web of fiber 1 of motion.For this reason, surface 9.1 exceeds the remaining housing that wherein the includes inner plenum 7 5.2 approximately 5 distance s1 to 15mm.The distance s3 that the surface 9.2 towards web of fiber 1 of housing parts 5.2 is positioned to web of fiber 1 is about 10 to 30mm, and preferably 10 to 20mm.
Fig. 4 illustrates another embodiment of steam blast case, and this steam blast case is marked as IV.It has identical structure with steam blast case I and II in principle, yet at this, the housing 5 of steam blast section B or main steam chamber 8 or 5.1 surface 9.1 are set to larger to the interval of the web of fiber 1 of motion.For this reason, the surface rearmounted segment distance s2 in 9.1 surfaces 9.2 with respect to remaining housing 5.2.Describedly apart from s2, be about 5 to 15mm, the distance s that the surface 9.2 of housing parts 5.2 is positioned to web of fiber 1 is simultaneously about 5 to 30mm, and preferably 15 to 25mm.
Should supplement, the servo drive 14 that steam blast case I to IV also has respectively steam input 13 and has valve body is for regulating existing steam valve.
Reference numerals list
1 web of fiber
2 pressure rollers
3 wrinkle cylinders
4 impression places
5 housings
The housing of 5.1 main steam chambers
The housing of 5.2 steaming chambers
6 end regions
7 steaming chambers
8 main steam chambers
The surface of 9.1 main steam chambers
The surface of 9.2 steaming chambers
10 steam outlets
11 shell rim
A interval
B steam blast section
C shell length
S, S1, S2, S3 distance
L breadth traffic direction
MD machine direction
I, II, III, IV steam blast case
Claims (13)
1. the steam blast case (I for steam-blown fiber width (1), II, III, IV), it has housing (5), described housing (5) has spacing (s) and has the length (C) stretching along machine direction (MD) towards the web of fiber (1) for the treatment of steam blast, and wherein, described housing (5) surrounds out steaming chamber (7), described steaming chamber (7) is provided with steam outlet (10) and forms thus the steam blast section (B) matching with the web of fiber for the treatment of steam blast (1), it is characterized in that, the described steam blast section (B) with steam outlet (10) is attached troops to a unit in the main steam chamber (8) with described steaming chamber (7) arranged adjacent, wherein, described steam blast section (B) along machine direction (MD), only occupy described housing (5) the total length (C) stretching along machine direction (MD) 10 to 50%, and also only concentrate on a position of described housing (5).
2. steam blast case (I, II, III according to claim 1, IV), it is characterized in that, described steam blast section (B) has along the length of machine direction (MD), this length is 20 to 200mm, and the length (C) of described housing (5) is 200 to 600mm.
3. steam blast case according to claim 1 and 2 (I, II, III, IV), is characterized in that, described steam blast section (B) is positioned on the end regions (6) of described housing (5).
4. steam blast case (I according to claim 3, II, III, IV), it is characterized in that, in the end regions (6) of described housing (5), the end of described steam blast section (B) to the edge of described housing (5) has the distance (A) stretching along machine direction (MD), and this distance (A) is 20 to 200mm.
5. steam blast case (I, II, III according to claim 1, IV), it is characterized in that, the steam outlet (10) of described steam blast section (B) is embarked on journey and is arranged (11), wherein, the quantity (n) of described row (11) is one to six row (11).
6. steam blast case (I, II, III according to claim 5, IV), it is characterized in that, the steam outlet (10) of described steam blast section (B) has 3 to 6mm diameter, and the steam speed of discharging from described steam outlet (10) is 10 to 60m/s.
7. steam blast case (I, II, III according to claim 1, IV), it is characterized in that the outer surface of described housing (5), at least towards the surface (5.1,5.2) for the treatment of the web of fiber (1) of steam blast, thering is the roughness that is less than 10 μ m.
8. steam blast case (I, II, III according to claim 7, IV), it is characterized in that the outer surface of described housing (5), at least polished towards the surface (5.1,5.2) of web of fiber (1) for the treatment of steam blast or be provided with the coating of anti-soil thing.
9. according to the steam blast case (II) described in claim 7 or 8, it is characterized in that, described housing (5) towards treating the web of fiber (1) of steam blast and being set to treat that in steam inside chamber (7) with upper surface (9) of stretching, the main steam chamber (8) of described steam blast section (B) web of fiber (1) of steam blast has 5 to 30mm even interval (s).
10. according to the steam blast case (III) described in claim 7 or 8, it is characterized in that, with the remaining housing (5 of settling with a determining deviation (s3) that wherein has steam inside chamber (7), 5.2) surface (9.2) is compared, the surface (9.1) towards treating the web of fiber (1) of steam blast of the housing (5.1) of described steam blast section (B) or described main steam chamber (8) be positioned to operation web of fiber (1) have less spacing, wherein, the surface (9.1) of the housing (5.1) of described steam blast section (B) or described main steam chamber (8) exceeds forward remaining surface (9.2) one segment distances (s1).
11. according to the steam blast case (IV) described in claim 7 or 8, it is characterized in that, compare with the surface (9.2) that wherein has the remaining housing (5.2) of settling with a determining deviation (s) of steam inside chamber (7), the surface (9.1) towards treating the web of fiber (1) of steam blast of the housing (5.1) of described steam blast section (B) or described main steam chamber (8) be positioned to operation web of fiber (1) have larger spacing, wherein, relatively remaining surface, the surface (9.1) of the housing (5.1) of described steam blast section (B) or described main steam chamber (8) (9.2) rearmounted segment distances (s2).
12. steam blast casees according to claim 10 (III), is characterized in that, described distance (s1) is 5 to 15mm, and described spacing (s3) is 10 to 30mm.
13. steam blast casees according to claim 11 (IV), is characterized in that, described distance (s2) is 5 to 15mm, and described spacing (s) to treating the web of fiber (1) of steam blast is 5 to 30mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011086617.5 | 2011-11-18 | ||
| DE102011086617A DE102011086617A1 (en) | 2011-11-18 | 2011-11-18 | steam blow |
| PCT/EP2012/072082 WO2013072235A1 (en) | 2011-11-18 | 2012-11-08 | Steam blow box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203475226U true CN203475226U (en) | 2014-03-12 |
Family
ID=47178667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201290000211.XU Expired - Fee Related CN203475226U (en) | 2011-11-18 | 2012-11-08 | Steam blow box |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN203475226U (en) |
| AT (1) | AT13597U1 (en) |
| DE (2) | DE102011086617A1 (en) |
| WO (1) | WO2013072235A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3010853C (en) * | 2016-01-28 | 2024-02-20 | Robert James Seymour | Fibrous web dewatering apparatus and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7475496B2 (en) * | 2002-05-07 | 2009-01-13 | Voith Paper Patent Gmbh | Steam blower box unit |
| DE10255716B4 (en) | 2002-11-29 | 2006-08-31 | Voith Paper Patent Gmbh | Web treatment device, in particular calender |
| DE10353297A1 (en) * | 2003-11-14 | 2005-06-16 | Voith Paper Patent Gmbh | Blower for a web, at a production/finishing machine for paper/cardboard/tissue, has a pressure chamber which is maintained at a pressure when not in use to prevent the entry of dirt and water |
| DE10357288A1 (en) | 2003-12-05 | 2005-07-07 | Voith Paper Patent Gmbh | Process and assembly to modify the moisture profile of a wet paper web in a nip gap with water spray jets |
| US8187426B2 (en) * | 2008-05-31 | 2012-05-29 | Abb Ltd. | Steam shower having improved maintenance access |
-
2011
- 2011-11-18 DE DE102011086617A patent/DE102011086617A1/en not_active Withdrawn
- 2011-11-18 DE DE202011110276U patent/DE202011110276U1/en not_active Expired - Lifetime
-
2012
- 2012-11-08 WO PCT/EP2012/072082 patent/WO2013072235A1/en active Application Filing
- 2012-11-08 CN CN201290000211.XU patent/CN203475226U/en not_active Expired - Fee Related
- 2012-11-08 AT ATGM9002/2012U patent/AT13597U1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE202011110276U1 (en) | 2013-04-30 |
| AT13597U1 (en) | 2014-04-15 |
| WO2013072235A1 (en) | 2013-05-23 |
| DE102011086617A1 (en) | 2013-05-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20171108 |