EP1746207B1 - Stabilizing apparatus for paper webs in the course of formation - Google Patents
Stabilizing apparatus for paper webs in the course of formation Download PDFInfo
- Publication number
- EP1746207B1 EP1746207B1 EP20060425515 EP06425515A EP1746207B1 EP 1746207 B1 EP1746207 B1 EP 1746207B1 EP 20060425515 EP20060425515 EP 20060425515 EP 06425515 A EP06425515 A EP 06425515A EP 1746207 B1 EP1746207 B1 EP 1746207B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- roller
- wedge
- movable element
- lower face
- 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
Links
- 230000000087 stabilizing effect Effects 0.000 title claims description 20
- 230000015572 biosynthetic process Effects 0.000 title claims description 15
- 239000012530 fluid Substances 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 230000001747 exhibiting effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/36—Guiding mechanisms
- D21F1/38—Pads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
-
- 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
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0063—Devices for threading a web tail through a paper-making machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/20—Avoiding or preventing undesirable effects
- B65H2601/21—Dynamic air effects
- B65H2601/211—Entrapping air in or under the material
Definitions
- the present invention relates to a plant for producing a tissue paper web comprising a stabilizing apparatus for paper webs in the course of formation.
- the present invention is suitable for use in plants for the production of tissue paper to maintain the webs stable during their advancement along the production lines.
- the plants for the production of tissue paper are provided with a roller, so-called “yankee roller” over which the paper web in the course of formation is wound.
- the web formed on the yankee roller is subsequently sent onto a transmission roller, so-called “pope roller”, to be fed to a spool for collecting the finished product.
- stabilizing devices are provided between the yankee roller and the transmission roller to avoid the formation of air layers between the paper and the outer surface of the transmission roller.
- the formation of air layers is due to an air flow carried by the paper web and consisting of fluid threads which develop in correspondence of the same web's faces.
- the paper web runs at high speed (up to 2000 meters/min) with consequent production of a substantial air flow.
- the transmission roller during its rotation thereof, carries a flow of air around the cylindrical surface thereof.
- Stabilizing devices for paper webs are known to be made up of a body generally of wedge shape facing the lower surface of the web, that is, the surface which enters in contact with the transmission roller, and provided with an air-delivering means located upstream of the transmission roller.
- the delivering means directs a jet of air against the lower surface of the web in order to stabilize the same web by counteracting the fluid thread being carried therealong.
- a known stabilizing apparatus is described from WO 0114233 showing a roll foil to improve the stability of a moving tissue, having an air shower directed towards the transmission roller.
- the stabilizing devices utilize a jet of compressed air which tends to break the paper web.
- the paper tissue results very thin and, accordingly, also breakable, especially if it is made to advance at high speeds; consequently, the jet of compressed air may tear the web.
- the compressed air delivered towards the web generates an increase of paper powders usually present in the paper-production lines.
- the specific technical object of the present invention is to propose a stabilizing apparatus for paper webs in the course of formation which does not exhibit the above mentioned drawbacks.
- the object of the present invention is to provide a plant for producing a tissue paper web comprising a stibilizing apparatus able to efficiently suppress the formation of air under the web without damaging the same web.
- a further object of the present invention is to propose a plant for producing a tissue paper web comprising a stabilizing apparatus of simple and cost-effective structure and, capable, at the same time, of eliminating the cellulose powders carried by the web.
- numeral 1 indicates on the whole a stabilizing apparatus for paper webs 2 in the course of formation, according to the present invention.
- the apparatus 1 is applied in plants for the production of tissue paper, that is, paper for disposable products of any kind.
- the plants are made up of a roller for driving out a paper web 2 in the course of formation.
- the stabilizing apparatus 1 is housed upstream of the above cited roller 3 so as to eliminate any formation of air between the web 2 and the outer surface 3a of the same roller 3.
- the stabilizing apparatus 1 comprises a movable element 4 disposed in correspondence of a lower face 2a of web 2.
- the element 4 exhibits a wedge-like portion 5 having a substantially laminar conformation and presenting a leading edge 6 facing the web's advancement direction A.
- the leading edge 6, having preferably a rounded profile, is disposed in correspondence of the lower face 2a of web 2 in order to intercept a first fluid thread F1 carried by the web 2.
- the wedge-like portion 5 also exhibits a lower surface 7 adjacent to said leading edge 6 in order to intercept the first fluid thread F1 and divert it along a direction transverse to the feeding direction A ( Fig. 1 ).
- the lower surface 7 of the wedge-like portion 5 has a wavy development to define an aerodynamic profile able to divert the first fluid thread F1.
- the wedge-like portion 5 also has a flat upper surface 8 opposite to the lower surface 7 and exhibiting a first end 8a associated with the leading edge 6, and a second end 8a opposite to the first.
- the web 2 is pushed towards the upper surface 8 by sliding thereon while being driven into motion.
- the second end 8b of the flat upper surface 8 is bent away from the lower face 2a of web 2 and in proximity (in use) of the external surface 3a of roller 2, thereby defining a section 9 for the passage of a second fluid thread F2 created by the rotation of roller 3.
- the passage section 9 delimites, therefore, an expansion region able to create a further depression in correspondence of a portion of the external surface 3a of roller 3 in contact with the lower face 2a of web 2.
- the movable element 4 comprises a support arm 10 having a substantially elongated shape and exhibiting a first end 10a associated, at the bottom, with the wedge-like portion 5, and a second end 10b opposite to the first end 10a.
- the first end 10a is substantially U-shaped wherein a concave region facing opposite to wedge-like portion 5 is defined.
- the first end 10a of the arm 10 has a raker 11 shaped like a lamina ad abutting against the external surface 3a of the transmission roller 3.
- the raker 11 is in contact with the roller 3 to slide onto the external surface and to intercept the second fluid thread F2.
- the second fluid thread F2 is mostly diverted by the raker 11 and made to flow to the concave region of the first end 10a to be drawn away from the web 2.
- the second end 10b of arm 10 is engaged with a linear actuator 12 able to drive the movable element 4 between an operating position, in which it is moved close to the paper web 2 ( Fig. 1 ), and an inoperative position in which it is moved away from the web 2 ( Fig. 2 ).
- the movable element 4 can be moved away from the web to allow an operator to manually intervening on the same web.
- the linear actuator 12 preferably exhibits a pneumatic piston.
- the actuator 12 may consist of any mechanical means known in the art for driving the movable element 4.
- the apparatus 1 may also be provided with suction means 13 to be moved close to the movable element 4 in correspondence of the lower face 2a of web 2.
- the means 13 exhibit a first suction mouth 13a facing the wedge-like portion 5 in order to aspirate the cited fluid threads F1 and F2 being diverted by the movable element 4.
- the suction means 13 also exhibit a second suction mouth 13b facing a yankee roller (not shown in the figures) generally disposed upstream of the movable element 5.
- the invention overcomes the problems of the prior art and reaches the envisaged objects.
- the wedge-like portion 5 allows eliminating the fluid thread carried by the web 2 without acting directly on the same web 2. Consequently, any damaging of the paper web 2 is avoided.
- wedgte-like portion 5 made up of a suitably shaped lamina, results of very simple construction and limited cost.
- a further advantage is provided by the effect of the means 13 which make it possible to eliminate any cellulose powder present in the plant by aspiring the first and second fluid threads F1 and F2.
Description
- The present invention relates to a plant for producing a tissue paper web comprising a stabilizing apparatus for paper webs in the course of formation.
- In particular, the present invention is suitable for use in plants for the production of tissue paper to maintain the webs stable during their advancement along the production lines.
- The plants for the production of tissue paper are provided with a roller, so-called "yankee roller" over which the paper web in the course of formation is wound. The web formed on the yankee roller is subsequently sent onto a transmission roller, so-called "pope roller", to be fed to a spool for collecting the finished product.
- Usually, stabilizing devices are provided between the yankee roller and the transmission roller to avoid the formation of air layers between the paper and the outer surface of the transmission roller. The formation of air layers is due to an air flow carried by the paper web and consisting of fluid threads which develop in correspondence of the same web's faces.
- It occurs in fact that in some application, the paper web runs at high speed (up to 2000 meters/min) with consequent production of a substantial air flow. Moreover, also the transmission roller, during its rotation thereof, carries a flow of air around the cylindrical surface thereof.
- Such formation of air layers generates a cushion effect between the web and the roller (ballooning effect) and an unstable motion of the paper web, so that the latter cannot be properly transported by the transmission roller.
- Stabilizing devices for paper webs are known to be made up of a body generally of wedge shape facing the lower surface of the web, that is, the surface which enters in contact with the transmission roller, and provided with an air-delivering means located upstream of the transmission roller.
- In these devices, the delivering means directs a jet of air against the lower surface of the web in order to stabilize the same web by counteracting the fluid thread being carried therealong.
- A known stabilizing apparatus is described from
WO 0114233 - However, the stabilizing devices roughly described above exhibits significant drawbacks.
- It must be stressed in the first place that the stabilizing devices utilize a jet of compressed air which tends to break the paper web. In fact, it is to be noted that the paper tissue results very thin and, accordingly, also breakable, especially if it is made to advance at high speeds; consequently, the jet of compressed air may tear the web.
- The damage of the the paper web also implies the interruption of the production line, with imaginable drawbacks in economical terms.
- A further drawback is given by the structural complexity of the delivering means.
- Besides, the compressed air delivered towards the web generates an increase of paper powders usually present in the paper-production lines.
- In this context, the specific technical object of the present invention is to propose a stabilizing apparatus for paper webs in the course of formation which does not exhibit the above mentioned drawbacks.
- In particular, the object of the present invention is to provide a plant for producing a tissue paper web comprising a stibilizing apparatus able to efficiently suppress the formation of air under the web without damaging the same web.
- A further object of the present invention is to propose a plant for producing a tissue paper web comprising a stabilizing apparatus of simple and cost-effective structure and, capable, at the same time, of eliminating the cellulose powders carried by the web.
- The above indicated technical object and specified purposes are substantially obtained by providing a stabilizing apparatus for paper webs in the course of formation which comprises the technical characteristics set forth in one or more of the attached claims.
- Further characteristics and advantages of the present invention will be more evident from the indicative, and thus non-limitative, description of one preferred, but non-exclusive, embodiment of a stabilizing apparatus for paper webs in the course of formation, as illustrated in the accompanying drawings, wherein:
-
Fig. 1 shows schematically a region of the paper-production plant wherein the stabilizing apparatus according to the present invention is applied, in a respective operating condition; -
Fig. 2 shows schematically the plant ofFig. 1 with the stabilizing apparatus in a respective inoperative condition. - With reference to the attached figures, numeral 1 indicates on the whole a stabilizing apparatus for
paper webs 2 in the course of formation, according to the present invention. - The apparatus 1 is applied in plants for the production of tissue paper, that is, paper for disposable products of any kind.
- In general, the plants, as partially illustrated in
Fig. 1 , are made up of a roller for driving out apaper web 2 in the course of formation. - The stabilizing apparatus 1 is housed upstream of the above cited
roller 3 so as to eliminate any formation of air between theweb 2 and theouter surface 3a of thesame roller 3. - The stabilizing apparatus 1 comprises a
movable element 4 disposed in correspondence of alower face 2a ofweb 2. - The
element 4 exhibits a wedge-like portion 5 having a substantially laminar conformation and presenting a leadingedge 6 facing the web's advancement direction A. - The leading
edge 6, having preferably a rounded profile, is disposed in correspondence of thelower face 2a ofweb 2 in order to intercept a first fluid thread F1 carried by theweb 2. - The wedge-
like portion 5 also exhibits a lower surface 7 adjacent to said leadingedge 6 in order to intercept the first fluid thread F1 and divert it along a direction transverse to the feeding direction A (Fig. 1 ). - The lower surface 7 of the wedge-
like portion 5 has a wavy development to define an aerodynamic profile able to divert the first fluid thread F1. - The wedge-
like portion 5 also has a flatupper surface 8 opposite to the lower surface 7 and exhibiting afirst end 8a associated with the leadingedge 6, and asecond end 8a opposite to the first. - Upon the deviation of the first thread F1 a depression is created in correspondence of the
lower face 2a ofweb 2, so that the flatupper surface 8 can be associated with thelower face 2a ofweb 2 following the depression created in correspondence of the samelower face 2a. - In other words, the
web 2 is pushed towards theupper surface 8 by sliding thereon while being driven into motion. - The
second end 8b of the flatupper surface 8 is bent away from thelower face 2a ofweb 2 and in proximity (in use) of theexternal surface 3a ofroller 2, thereby defining asection 9 for the passage of a second fluid thread F2 created by the rotation ofroller 3. - The
passage section 9 delimites, therefore, an expansion region able to create a further depression in correspondence of a portion of theexternal surface 3a ofroller 3 in contact with thelower face 2a ofweb 2. Themovable element 4 comprises asupport arm 10 having a substantially elongated shape and exhibiting afirst end 10a associated, at the bottom, with the wedge-like portion 5, and asecond end 10b opposite to thefirst end 10a. - The
first end 10a is substantially U-shaped wherein a concave region facing opposite to wedge-like portion 5 is defined. - The
first end 10a of thearm 10 has araker 11 shaped like a lamina ad abutting against theexternal surface 3a of thetransmission roller 3. In particular, as illustrated inFig. 1 , in which the apparatus 1 is shown in a respective operating condition, theraker 11 is in contact with theroller 3 to slide onto the external surface and to intercept the second fluid thread F2. - In this way, the second fluid thread F2 is mostly diverted by the
raker 11 and made to flow to the concave region of thefirst end 10a to be drawn away from theweb 2. - The
second end 10b ofarm 10 is engaged with alinear actuator 12 able to drive themovable element 4 between an operating position, in which it is moved close to the paper web 2 (Fig. 1 ), and an inoperative position in which it is moved away from the web 2 (Fig. 2 ). - In this way, in case of possible service operations, the
movable element 4 can be moved away from the web to allow an operator to manually intervening on the same web. - The
linear actuator 12 preferably exhibits a pneumatic piston. However, it will be appreciated that theactuator 12 may consist of any mechanical means known in the art for driving themovable element 4. - According to a preferred embodiment illustrated in the accompanying drawings, the apparatus 1 may also be provided with suction means 13 to be moved close to the
movable element 4 in correspondence of thelower face 2a ofweb 2. - In particular, the
means 13 exhibit afirst suction mouth 13a facing the wedge-like portion 5 in order to aspirate the cited fluid threads F1 and F2 being diverted by themovable element 4. - In this way, the paper powders carried by the
web 2 androller 3 are conveyed, together with the fluid threads, F1 and F2 towards thefirst suction mouth 13a. - The suction means 13 also exhibit a
second suction mouth 13b facing a yankee roller (not shown in the figures) generally disposed upstream of themovable element 5. - In this way, the
web 2 coming from the said yankee roller encounters the leadingedge 6 wherein the fluid thread F1 is diverted as above described. As a consequence, theweb 2 keeps running in the direction A with the respectivelower face 2a being into abutment against theupper surface 8. In addition, owing to the presence of thearm 10, also the second fluid thread F2 is diverted, thereby eliminating the air between theweb 2 androller 3. - The invention overcomes the problems of the prior art and reaches the envisaged objects.
- First of all, it is to be stressed, as previously indicated, that the
web 2 is stabilized and disposed on theroller 3 without interposition of air. Accordingly, the above mentioned ballooning effect is suppressed. - Besides, the wedge-
like portion 5 allows eliminating the fluid thread carried by theweb 2 without acting directly on thesame web 2. Consequently, any damaging of thepaper web 2 is avoided. - Moreover, the structure of the wedgte-
like portion 5, made up of a suitably shaped lamina, results of very simple construction and limited cost. - A further advantage is provided by the effect of the
means 13 which make it possible to eliminate any cellulose powder present in the plant by aspiring the first and second fluid threads F1 and F2.
Claims (6)
- A plant for producing a tissue paper web (2), said plant comprising a transmission roller (3) disposed underneath the web (2) for driving out the web (2) in the course of formation and a web stabilizing apparatus (1) housed upstream of said roller (3) to eliminate a formation of air between the web (2) and an outer surface (3a) of said roller (3), characterized in that the stabilizing apparatus (1) comprises at least a movable element (4) disposed in correspondence of the web (2), wherein the said movable element (4) comprises a wedge-like portion (5) having a continuous upper surface (8) of contact with a lower face (2a) of the web (2), and a lower surface (7) associated therewith for intercepting a first fluid thread (F1) carried by said lower face (2a) and diverting said first thread (F1) along a direction transverse to the feeding direction (A) of the web (2),
wherein said lower surface (7) of the wedge-like portion (5) exhibits an aerodynamic profile to divert said first fluid thread (F1) and create a depression in correspondence of the lower face (2a) of the weo (2),
wherein said upper surface (8) of the wedge-like portion (5) is flat and said wedge-like portion (5) has a leading edge (6) disposed between said upper surface (8) and said lower surface (7), said lower surface (7), upper surface (8) and leading edge (6) all defining a continuous surface,
wherein said flat upper surface (8) has a first end (8a) associated with said leading edge (6) and a second end (8b) opposite to the first end (8a) and bent away from the lower face (2a) of the web (2), said second end (8b) defining, in cooperation with the outer surface (3a) of the transmission roller (3), a section (9) for the passage of a second fluid thread (F2) carried by said roller (3), and
wherein said movable element (4) further comprises a support arm (10) having a first end (10a) associated with said wedge-like portion (5), and a second end (10b) opposite to the first end (10a); said first end (10a) of the support arm (10) exhibiting a substantially U-shaped development which defines a concave region, said first end (10a) of the support arm (10) exhibiting an extension (11) shaped like a lamina and abutted against the outer surface (3a) of the transmission roller (3) in order to divert most of the second fluid thread (F2) towards the second end (10b) of said arm (10). - A plant according to the claim 1, characterized in that the said aerodynamic profile has a substantially wavy pattern.
- A plant according to claim 1, characterized in that said passage section (9) forms a neck for determining the expansion cf the second fluid thread (F2) and creates a depression in correspondence of a portion of the outer surface (3a) of said roller (3) in contact with the lower face (2a) of the web (2).
- A plant according to claim 1, characterized in that the stabilizing apparatus comprises also a linear actuator (12) associated with the second end (10b) of said arm (10) in order to drive the movable element (4) between an operating position in which it is moved close to the paper web (2), and an inoperative position in which it is moved away from said web (2).
- A plant according to any cf the preceding claims, characterized in that the stabilizing apparatus comprises also suction means (13) disposed close to said movable element (4) and disposed in correspondence of the lower face (2a) of said web (2).
- A plant according to the preceding claim, characterized in that said suction means (13) comprise a first mouth (13a) facing said wedge-like portion (5) to aspirate said first fluid thread (F1) diverted by the lower surface (7), and a second suction mouth (13b) facing a yankee roller disposed upstream of said movable element (4).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000161A ITFI20050161A1 (en) | 2005-07-22 | 2005-07-22 | STABILIZATION DEVICE FOR FORMING PAPER RIBBONS |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1746207A2 EP1746207A2 (en) | 2007-01-24 |
EP1746207A3 EP1746207A3 (en) | 2007-07-04 |
EP1746207B1 true EP1746207B1 (en) | 2015-05-13 |
Family
ID=37309511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060425515 Expired - Fee Related EP1746207B1 (en) | 2005-07-22 | 2006-07-21 | Stabilizing apparatus for paper webs in the course of formation |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070018028A1 (en) |
EP (1) | EP1746207B1 (en) |
CA (1) | CA2552978A1 (en) |
IT (1) | ITFI20050161A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1406647B1 (en) * | 2010-09-16 | 2014-03-07 | Milltech S R L | SUCTION CASE GROUP |
US9056742B2 (en) * | 2011-09-19 | 2015-06-16 | The Procter & Gamble Company | Process for initiating a web winding process |
SE537959C2 (en) * | 2013-03-27 | 2015-12-08 | Valmet Aktiebolag | Wheelchair and method for rolling up a paper web from the edge of a paper machine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3739338C2 (en) * | 1987-11-20 | 1995-09-07 | Voith Gmbh J M | Air guide box for stabilizing the running of a web, in particular a paper web |
US5759352A (en) * | 1996-05-24 | 1998-06-02 | Lau; Jark C. | Apparatus for stabilizing a moving low-strength sheet |
US6328852B1 (en) * | 1999-08-24 | 2001-12-11 | Kimberly-Clark Worldwide, Inc. | Method and apparatus for improving stability of moving webs |
AT408462B (en) * | 1999-11-18 | 2001-12-27 | Andritz Ag Maschf | METHOD AND DEVICE FOR SEPARATING DUST FROM A RUNNING PAPER |
US6565711B1 (en) * | 2000-08-05 | 2003-05-20 | Kleissler Jr Edwin A | Method for controlling dust on paper machinery and the like |
GB0030682D0 (en) * | 2000-12-15 | 2001-01-31 | Astenjohnson Inc | Suction assisted skimmer blade |
-
2005
- 2005-07-22 IT IT000161A patent/ITFI20050161A1/en unknown
-
2006
- 2006-07-19 US US11/488,649 patent/US20070018028A1/en not_active Abandoned
- 2006-07-21 EP EP20060425515 patent/EP1746207B1/en not_active Expired - Fee Related
- 2006-07-21 CA CA002552978A patent/CA2552978A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1746207A2 (en) | 2007-01-24 |
CA2552978A1 (en) | 2007-01-22 |
ITFI20050161A1 (en) | 2007-01-23 |
EP1746207A3 (en) | 2007-07-04 |
US20070018028A1 (en) | 2007-01-25 |
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