EP2429765A1 - Method for manufacturing a grinding element for use in rotating grinding or polishing tools and such grinding element - Google Patents
Method for manufacturing a grinding element for use in rotating grinding or polishing tools and such grinding elementInfo
- Publication number
- EP2429765A1 EP2429765A1 EP10735484A EP10735484A EP2429765A1 EP 2429765 A1 EP2429765 A1 EP 2429765A1 EP 10735484 A EP10735484 A EP 10735484A EP 10735484 A EP10735484 A EP 10735484A EP 2429765 A1 EP2429765 A1 EP 2429765A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- abrasive cloth
- brushes
- grinding
- legs
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005498 polishing Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 100
- 239000002184 metal Substances 0.000 claims abstract description 45
- 239000003292 glue Substances 0.000 claims abstract description 23
- 239000011324 bead Substances 0.000 claims abstract description 14
- 241000446313 Lamella Species 0.000 claims description 27
- 238000005520 cutting process Methods 0.000 claims description 22
- 238000009966 trimming Methods 0.000 claims description 19
- 238000004904 shortening Methods 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 7
- 238000003698 laser cutting Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 8
- 239000000835 fiber Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
- B24D13/04—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising a plurality of flaps or strips arranged around the axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
- B24D13/10—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of brushes
Definitions
- the present invention relates to a method for manufacturing a grinding element for use in rotating grinding or polishing tools, and which includes abrasive cloth and stiffening brushes, which are mounted and secured in a substantially U-shaped profile with a bottom and two legs, which form side walls, the tree edge regions delimiting the opening of the profile, as the profile, the abrasive cloth, the brushes and an adhe- sive means are continuously advanced to and through a mounting step and a fixing step, where the profile is statically deformed by the free edge regions of the two legs being pressed against each other, in order to narrow the opening and squeeze around and secure the abrasive cloth and the brushes, and by the formed grinding element being cut up into requested lengths.
- a grinding element for use in rotating grinding or polishing tools, and which includes lamellas of abrasive cloth and stiffening brushes, which are secured in a substantially U-shaped profile with a bottom and two legs, which form side walls, the free edge regions of which delimiting the opening of the profile, where the profile is statically deformed by the free edge regions of the two legs being pressed against each other for squeezing and securing the abrasive cloth and the brushes that extend out through the opening of the profile.
- Grinding elements which were mentioned in the introduction, therefore include a profile, which can have different shapes for placing in a mounting groove in the grinding or polishing tool.
- the profile can substantially be U-shaped, but generally it will have an undercutting, such as the profile is not flung out of the groove, but instead is secured in the groove. Therefore, the profile will at a free edge region, in which the abrasive cloth and the stiffening brushes extend from the profile, have a smaller dis- tance than the distance at the bottom of the profile.
- the grinding elements will include the abrasive cloth and stiffening brushes.
- Such grinding elements have a widely use because of the effective results, which are obtained by grinding of both plane and profiled items. It is important that the abrasive cloth of the grinding elements and brushes of the grinding elements have a correct length in order to have the requested grinding/polishing effect in the finished product.
- the grinding or polishing tools of such a type in which such grinding elements are used have preferably been used for grinding and polishing of not-plane surfaces such as curved furniture parts, panelled doors etc. However, this is also extensively used in other areas, in which there can be a machining of plane surfaces.
- the lamellas of the grinding element are formed by an abrasive cloth is slit transversely of the longitudinal direction, so that tapes or lamellas appear, which are at one end interconnected by means of an unbroaken strip of abrasive cloth, which is secured in the U-shaped profile.
- the free end thus consists of a number of parallel lamellas of abrasive cloth, which extend substantially perpendicular to the longitudinal direction of the profile.
- the stiffening brushes will be disposed in immediate vicinity of the lamellas, in that way that they are supporting the lamellas by the grinding.
- the grinding or the polishing effect is obtained as a result of the effect of the lamellas, as they sweep over an item during rotation of the tool.
- the stiffening brushes have, like the word says, a function to support the grinding lamellas.
- the brushes can also be manufactured of a material, so that they contribute to the grinding or polishing effect.
- the tools can be formed with the grinding elements radially disposed on a grinding or polishing head, or can be axial disposed on the surface of a grinding or polishing cylinder.
- the grinding effect can be exerted on a surface, which is perpendicular on the rotation direction of the tool, or on a surface which goes like a tangent to a cylindrical circumference on a cylindrical grinding or polishing tool.
- the grinding or polishing effect of the tools appears as a result of the effect of the lamellas during their flexible sweeping of the item during the rotation of the tool.
- the lamellas and the brushes will be disposed in profiles which can be formed of plastic or metal.
- the grinding elements are manufactured in lengths, which cor- respond with the length on the grinding element which is to be used in a tool.
- the grinding element is peculiar in that the U-shaped pro- file is constituted by a metal profile, where the legs have a converging shape in direction against the free edge regions of the legs, and that the abrasive cloth and the brushes are secured in the profile by a glue bead between a first edge region of the abrasive cloth and the inside of one of the legs of the profile and a retainer wire, which is embedded in a bent section of the brushes, as the brushes are disposed be- tween the retainer wire and the side walls and bottom of the profile, such that the brushes and the retainer wire have a cross-section with greater width than the width of the opening of the profile.
- a plane metal band or a metal strip is used in the manufacture. This has a limited thickness which can be 1 mm or less and a width between 3 and 5 cm dependent on the size of the finished U-shaped profile.
- the metal band is conveyed in a plane state at the same time with applying a bead of glue in the longitudinal direction of the strip.
- the bead of glue is applied with an extruder nozzle, which is adapted in the instrument, and which makes a glue quantity coordinated with the conveying speed for the metal band. That section of the metal band which is applied a glue joint will after the subsequent folding constitute one of the side walls in the U-shaped profile, as the profile will have side walls which correspond to the branches on the U-shape, and a bottom which corresponds to the bottom of the U.
- the abrasive cloth is applied.
- the abrasive cloth will come from reels or another large supply enabling a continuous production process.
- the abrasive cloth will be an elongated strip of the abrasive cloth, which has a width larger than the height of the final U-shaped profile, such as the grinding lamellas can stretch outside the final U-shaped profile. This means that the abrasive cloth is placed on the metal band with a substantial section of the width, which constitutes the height of the lamellas extending beyond the side edge of the metal band. The first edge region of the abrasive cloth will be pressed against the glue bead.
- the metal band is folded to form the substantially U-shaped profile.
- the folding can be effected by a rolling of the metal band to the requested profile.
- the side edges of the metal band will be folded up such as they are substantially perpendicular to the non-folded section. In this situation there will still be a large opening which faces upwards in the U-shape. This means that the brushes from the top side can be led down in the upwards facing opening in the profile. This occurs when the brushes are disposed with their longitude extension transversely to the formed longitudinal direction of the profile.
- the brushes will in this way have a free end stretching beyond the abrasive cloth on the one side and beyond the free edge of the other side of the U-profile.
- a roller wheel can be used to lead the brushes down in the bottom of the U-shaped profile, which still is in an open state.
- the roller used for forcing down the brushes will at the same time with the circumference have a groove in which a retainer wire is disposed.
- the retainer wire will be led down in the bottom of the U-profile, at the same time with the brushes being pressed down in the bottom of the profile.
- the brushes will hereby be disposed with an orientation upwards along each side of the roller wheel, which is used for their downlead.
- the retainer wire, which is led down can be made of plastic or metal. In this way the retainer wire is led down into the profile so that the brushes are disposed in a position between the retainer wire and the side walls of the profile respectively the bottom of the profile. On the one side wall the abrasive cloth will be glued on.
- a fixing step is performed in which the U-shaped side walls of the profile are pressed further towards each other, such as a squeezing around the side walls of the profile is established.
- This squeezing can be effected in the form of rollers, which are led inwards towards the side wall of the profile.
- the abrasive cloth is kept in a horizontal position.
- This can be effected as a roller wheel, which keeps the abrasive cloth in a horizontal position, so that it is perpendicular to the grinding brushes, which will have a substantially perpendicular orientation with an extension out of the upwardly facing opening in the profile.
- a final shape is formed in which the legs are provided a converging shape in direction against the free edge regions.
- the bottom of the U-profile will be wider than the entrance opening at the top of the U-profile, in which the brushes and abrasive cloth are extending.
- the trimming can include straightening out fibres and the brashes by using a combing device or similar, which places the brashes parallel with each other.
- the trimming can also include a shortening of the brashes in height in that way they have a correctly uniform height in proportion to the length of the abrasive cloth. In a such situation, the shortening of the individual grinding elements will first be effected after a trimming is performed.
- the legs in the U-shaped profile have a converging shape in direction against the free edge regions of the legs, it will be possible to secure the abrasive cloth and the brashes in the profile.
- the glue bead which is used for gluing on the abrasive cloth on the metal band
- the retainer wire which is disposed, will fill the interior of the profile, so that both brashes and abrasive cloth are secured not only by the squeezing effect, but also by the gluing to the side wall, and the placing of the retainer wire in the bottom of the U-shaped profile. Because of the converging orienta- tion the retainer wire can not be pulled out from the open side of the profile.
- the method according to the invention is characterized by a step for removing grain of sand on the mentioned first edge region of the abrasive cloth, before applying the abrasive cloth on the metal band.
- a squeezing can be effected which ensures that the elements are secured in the U-shaped profile, as this is squeezed into the final shape with the legs converging in direction against the free edge regions.
- an edge region without grinding particles/grain of sand will provide a smooth surface, which provides a better glue surface such as the gluing of the abrasive cloth and the metal band is secured best possible.
- the method according to the invention is charac- terized in that a trimming step is accomplished before the cutting step.
- a trimming step will be advantageous in the continuous manufacturing step, rather than a trimming after obtaining individual grinding elements.
- the trimming can be proceeding most efficiently.
- the method according to the invention is characterized in that trimming is chosen among straightening out fibres, which preferably is performed before finishing the fixing step and shortening of the fibres to a predeter- mined length, which preferably is effected after finishing the fixing step. Trimming will primarily be intended for using in straightening out or alignment of the fibres such as all are orientated parallel to each other.
- this is performed before finishing the fixing step in which the free edge regions are pressed against each other into the final converging shape.
- the straightening out of fibres will not only be effected in that section of the fibres, which are situated outside the U-shaped profile, but will also be made for the fibres, which are situated inside the U-profile.
- the fibres in the U-profile can move in relation to each other in an intervening closing step, in which the edge regions of the metal band are not brought to the final converging shape, a particular effective straightening out of the fibres is achieved.
- Trimming can also include a step in which the fibres are shortened to a predetermined length, such as they have a correctly length in relation to the abrasive cloth, which is disposed in the grinding element.
- a such shortening and trimming of the fibres are particularly efficient, when the abrasive cloth during the trimming is bent away into a horizontal position.
- the abrasive cloth can be bent away under another angle, as only it is kept away from contact with the fibres of the stiffening brushes.
- the fibre of the brushes preferably is effected before finishing the fixing step, it could also be effected after finishing the fixing step.
- the shortening which will be effected of the fibres, will preferably be performed after finishing the fixing step with the legs in their final converging shape, in which they are statically deformed into the final shape of the substantially U-shaped profile. It is hereby ensured that no changes in the length are performed, and the fibre of the brushes will have a correctly length, when the shortening first is effected, when the fibres are dis- posed with a final fixing in the profile.
- the method according to the invention is characterized by slitting the abrasive cloth for the forming of lamellas, as slits extend perpendicularly to the longitudinal direction of the profile from mentioned first edge re- gion of the abrasive cloth to the free edge of the mentioned second edge region of the abrasive cloth.
- the abrasive cloth will preferably be slit, so that lamellas are formed.
- the lamellas will extend perpendicularly to the longitudinal direction of the grinding elements.
- the slits are also extending perpendicular to the longitudinal direction of the grinding element.
- the slits will at least extend from the top side of the profile and perpendicular out from here from the first edge region of the abrasive cloth, which is situated inside and is glued on the profile to the free edge of the other edge region of the abrasive cloth, which extends outside the U-profile.
- the method according to the invention is characterized in that the slitting of the abrasive cloth is effected by laser cutting.
- laser cutting there is a particular efficient cutting of the abrasive cloth, which contains grinding particles, preferably grain of sand.
- grinding particles preferably grain of sand.
- the method according to the invention is characterized in that the cutting up of the grinding element into the requested lengths, is performed by cutting at a slit between two succeeding lamellas, as knives are used for cutting the profile, retainer wire and the mentioned first edge region of the abrasive cloth.
- knives are used for cutting the profile, retainer wire and the mentioned first edge region of the abrasive cloth.
- traditional knives can be used for the succeeding cutting up of the abrasive cloth in the requested lengths. In that way there will from a slit, which is formed between two succeeding lamellas, be effected a cutting by means of knives, which in a simple way can cut both the retainer wire of the profile and the metal profile.
- These knives could also cut off the first edge region of the abrasive cloth.
- the knives When the first edge region of the abrasive cloth is released from grain of sand or other grinding particles, the knives will not be worn unnecessarily.
- the cutting knives can therefore have a long durability.
- the method according to the invention is charac- terized in that the abrasive cloth is secured at a position, where it is kept away from contact with the brushes until the cutting step.
- this will be a particular advantage, as trimming and shortening of the brushes hereby are facilitated, compared to a situation in which the abrasive cloth will be disposed in close contact parallel to the fibres of the brushes.
- the method according to the invention is charac- terized in that the abrasive cloth at one side edge is slit for forming lamellas, and that the slits extend transversely to the longitudinal direction of the profile.
- Figures 1-9 show steps in the method according to the invention
- Figures 10 shows a partial view of a grinding element according to the invention and
- Figures 11 shows a perspective view of a grinding element according to the invention.
- the grinding element which is shown in figures 10 and 11, is generally designated with the reference number 1.
- the grinding element includes an abrasive cloth 2 and stiffening brushes 3.
- the abrasive cloth 2 is cut up in a line of lamellas 4 at mutually spaced slits 5.
- the grinding element includes moreover a substantially U-shaped pro- file 6.
- the U-shaped profile 6 squeezes around a section of the abrasive cloth 2 and the brushes 3.
- a retainer wire 7 is provided in a position, such as a section of the grinding brushes are situated between the retainer wire 7 and the bottom 8 of the U-shaped profile 6.
- the U-shaped profile 6 includes moreover two sides 9, which are converging upwards from the bottom against the free edge regions 10, which enclose an opening 11 through which the abrasive cloth 2 and the brushes 3 are streched from the profile 6.
- the opening 11 will have a smaller extension than the bottom 8.
- the abrasive cloth 2 is glued to the one side wall 9 by means of a glue joint 12 which is shown in figure 10.
- a strip-shaped metal band 13 is conveyed through a machine on a support.
- An extruder 14 extrudes a glue joint 15 on an area of the metal band, which subsequently constitutes a side wall 9 of the profile.
- an abrasive cloth 2 is applied to the glue joint 15.
- the abrasive cloth 2 is disposed so that it has an essentially extension 16, which goes beyond the side edge 10 of the metal band 13.
- the inner side edge 17 of the abrasive cloth 2 will be located in a position, which approximately corresponds to the bottom section of a side wall 9 by the transition to bottom 8.
- a pressing means 18 which for example could be a roller or similar the abrasive cloth 2 is pressed down against the metal band 13, which rests on a support.
- the extruding bead of glue 15 will be pressed out and form a glue joint between the abrasive cloth 2 and the metal band 13.
- the abrasive cloth is released from grain of sand in a edge region 19, which is intended for contact with the metal band.
- FIG 3 On figure 3 is seen a succeeding step, in which the metal band obtains a beginning rolling in order to bend the side walls 9 upwards. This is effected by using rollers 20, which are pressing against the side walls of the metal band 13. The metal band can during this rolling be kept with the bottom 8 in contact with the support by means of a counter-pressure roller (not shown).
- the abrasive cloth 2 is kept in a horizontal position such as illustrated in figure 3.
- a slitting of the free section 21 of the abrasive cloth is performed, which extends outside the profile 6.
- the slitting is performed by means of a laser 22, which forms the slitting 5 in order to form the lamellas 4.
- the side walls 9 are rolled further upwards such as they are disposed substantially perpendicular compared to the bottom 8.
- the abrasive cloth 2, which now is slit is still kept in a horizontal position.
- the brushes 3 are provided or rather the fibres, which form the brashes with an orientation transversely of the longitudinal direction of the profile 6.
- a central region 23 of each single fibre in the brashes 3 is in that way disposed out from the upwards turning opening 11 in the profile.
- roller 28 will press against the side walls 9, such as these assume an inwards converging shape, in which the free edge regions 10 are led to a position closer to each other and thereby squeezing the brushes 3 and the abrasive cloth 2.
- the retainer wire 7 will be provided inside the bent edges and have a such diameter that it cannot be pulled out of the opening 11, as it is squeezed around the brashes 3 and the abrasive cloth 2. Afterwards a trimming is performed as illustrated in figure 8.
- the trimming is effected by the brashes 3 being machined with a trimming adaptation, which here is indicated in the shape of a vane wheel 29, which is rotated around an axis 30 substantially parallel with the longitudinal direction for the profile 6 in direction 31.
- the individual vanes 32 will afterwards be coated through the fibre strand, which constitutes the brush 3.
- the fibres are hereby disposed in a parallel orientation, in which they are created with a position substantially perpendicular on the longitudinal direction of the profile 6. In this position the free edge regions 10 are not yet brought to the final squeezed position. This is firstly effected in the furhter step which is illustrated in figure 9.
- a shortening in height of the brushes 3 is performed.
- This is effected by using a cutting means 34, which includes a rotating blade 35, which interacts with a retaining blade 36, which defines the height of the fibres.
- a cutting means 34 which includes a rotating blade 35, which interacts with a retaining blade 36, which defines the height of the fibres.
- FIG 9 an enlarged picture is illustrated of an alternative shape, which shows hammers 38 with rotating knives 37, and which also acts against the retaining blade 36 for shortening of the brushes 3.
- the hammers 38 are rotated in direction of the arrow 39.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA200900147A DK177035B1 (en) | 2009-01-30 | 2009-01-30 | Process for manufacturing abrasive elements for use in rotary grinding or polishing tools and such abrasive elements |
PCT/DK2010/050026 WO2010085964A1 (en) | 2009-01-30 | 2010-01-29 | Method for manufacturing a grinding element for use in rotating grinding or polishing tools and such grinding element |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2429765A1 true EP2429765A1 (en) | 2012-03-21 |
EP2429765A4 EP2429765A4 (en) | 2013-01-02 |
EP2429765B1 EP2429765B1 (en) | 2016-05-25 |
Family
ID=42395108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10735484.7A Active EP2429765B1 (en) | 2009-01-30 | 2010-01-29 | Method for manufacturing a grinding element for use in rotating grinding or polishing tools and such grinding element |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2429765B1 (en) |
DK (1) | DK177035B1 (en) |
PL (1) | PL2429765T3 (en) |
WO (1) | WO2010085964A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013016806A1 (en) * | 2011-07-31 | 2013-02-07 | Okulov Paul D | Rotary abrasive brush for deburring and method of manufacturing |
CN110076704B (en) * | 2019-05-29 | 2021-04-30 | 华侨大学 | Flexible polishing disk for polishing stone |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2400809A (en) * | 1943-03-13 | 1946-05-21 | Fuller Brush Co | Formation of brushes |
WO1997035688A1 (en) * | 1996-03-26 | 1997-10-02 | Poul Erik Jespersen | A method for manufacturing a sweeper or abrasive element and such element |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1202750B (en) * | 1964-06-29 | 1965-10-14 | Ludwig Bayer | Method and apparatus for producing brush strips |
US5129191A (en) * | 1988-08-05 | 1992-07-14 | Jason Inc. | Adhesive bonded flexible abrasive finishing tool |
-
2009
- 2009-01-30 DK DKPA200900147A patent/DK177035B1/en active
-
2010
- 2010-01-29 PL PL10735484T patent/PL2429765T3/en unknown
- 2010-01-29 EP EP10735484.7A patent/EP2429765B1/en active Active
- 2010-01-29 WO PCT/DK2010/050026 patent/WO2010085964A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2400809A (en) * | 1943-03-13 | 1946-05-21 | Fuller Brush Co | Formation of brushes |
WO1997035688A1 (en) * | 1996-03-26 | 1997-10-02 | Poul Erik Jespersen | A method for manufacturing a sweeper or abrasive element and such element |
Non-Patent Citations (1)
Title |
---|
See also references of WO2010085964A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2429765A4 (en) | 2013-01-02 |
WO2010085964A1 (en) | 2010-08-05 |
DK177035B1 (en) | 2011-02-14 |
EP2429765B1 (en) | 2016-05-25 |
PL2429765T3 (en) | 2017-01-31 |
DK200900147A (en) | 2010-07-31 |
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