EP2368719A1 - High-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subject to high working pressures - Google Patents
High-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subject to high working pressures Download PDFInfo
- Publication number
- EP2368719A1 EP2368719A1 EP09831498A EP09831498A EP2368719A1 EP 2368719 A1 EP2368719 A1 EP 2368719A1 EP 09831498 A EP09831498 A EP 09831498A EP 09831498 A EP09831498 A EP 09831498A EP 2368719 A1 EP2368719 A1 EP 2368719A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- density
- low
- ribs
- component
- filling
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
- B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders
Definitions
- the present invention relates to a high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures which can be used, for example, in offset printers or rolling bodies.
- the low-density intermediate layer is furthermore exposed at the ends of the sleeve and tends to expand at said ends due to contact with atmospheric agents, which may end up affecting the cylindrical surface regularity and dimensional stability of the outer diameter of the sleeve.
- Patent US-A-6688226 describes an apparatus for manufacturing sleeves for offset printing cylinders.
- the apparatus shown in Figure 2 of the publication of this patent comprises means for supporting and rotating a tubular core about an axis and an injection nozzle installed on a movable carriage which moves along a track parallel to the axis of the tubular core. Multiple radially overlaid strata of a solidifiable fluid polymer are deposited on an outer surface of the tubular core while the latter is rotating by means of the nozzle.
- the present invention provides a high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures.
- the sleeve is of the type comprising a central tubular core suitable for being coupled onto a shaft and a stratified structure arranged on an outer surface of said tubular core.
- the aforementioned stratified structure comprises a plurality of strata of one or more components with different densities overlaid radially with a continuous high-density outer layer.
- the sleeve of the present invention is characterized in that said stratified structure comprises a plurality of strata of a high-density component overlaid radially and separated axially, forming high-density ribs which can be helical or discoidal, a low-density component filling in separating spaces between the aforementioned high-density ribs forming a low-density filling, and a plurality of strata of a high-density component overlaid radially, forming the aforementioned continuous high-density outer layer which is supported on said high-density ribs and on said low-density filling.
- the sleeve of the present invention further comprises a plurality of strata of a high-density component overlaid radially, forming a continuous high-density inner layer in contact with said outer surface of the tubular core and on which the high-density ribs and the low-density filling are arranged. It is also preferable for the sleeve to have discoidal high-density enclosure walls formed by multiple strata at the ends of the sleeve and connected with the high-density inner and outer layers.
- a polymer such as polyurethane, for example, which can have different densities, is a suitable component for the stratified structure of the sleeves of the present invention.
- a suitable polyurethane for making the continuous inner layer, the continuous outer layer and the high-density ribs has, for example, a density comprised between 1.0 g/cm 3 and 1.6 g/cm 3 .
- the density of the polyurethane for the low-density filling can be significantly low because in some cases the main function of the filling is to simply support the strata of the continuous high-density outer layer while they are being deposited.
- the high-density ribs can be of a helical or discoidal configuration. If the helical configuration is used, the stratified structure can comprise a single high-density rib of a helical configuration, two or more formations of high-density ribs of a helical configuration which may or may not be parallel with one and the same rotational direction, or two or more cross-linked formations of high-density ribs of a helical configuration with opposite rotational directions. When two or more formations of high-density ribs of a helical configuration are used, either with the same rotational direction or opposite rotational directions, they can all have one and the same helix pitch or different helix pitches. Likewise, each of the formations of helical ribs can optionally have a variable pitch.
- the high-density ribs will be relatively thin in comparison with the spaces between them filled with the low-density filling, such that the sleeve can be very lightweight in comparison with the sleeves of the prior art, whereas the ribs and high-density enclosure walls support the continuous high-density outer layer substantially preventing the low-density filling from being crushed and assuring the cylindrical shape of the sleeve even under high working pressures.
- the discoidal enclosure walls further prevent the low-density filling from contacting with atmospheric agents at the ends of the sleeve and prevent the expansion thereof.
- the present invention provides a method for manufacturing a high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures.
- the method is of the type which comprises depositing multiple radially overlaid layers of a solidifiable fluid component of different densities on an outer surface of a tubular core while the latter is rotating by means of one or more injection nozzles installed on a movable carriage which moves on a track parallel to the axis of said tubular core.
- the method of the present invention is characterized in that it comprises depositing layers of a high-density component overlaid radially and separated axially to form helical or discoidal high-density rids, depositing a low-density component in separating spaces between the aforementioned high-density ribs to form a low-density filling therein, and depositing strata of a high-density component to form a continuous high-density outer layer supported on said high-density ribs and on said low-density filling.
- the method further comprises depositing strata of a high-density component to form a continuous high-density inner layer on said outer surface of the tubular core before depositing the high-density ribs and the low-density filling, such that the high-density ribs and the low-density filling are deposited on this continuous high-density inner layer.
- the method also contemplates forming enclosure walls made up of multiple strata of a high-density component at the ends of the sleeve to prevent the exposure of the low-density filling to atmospheric agents at the ends of the sleeve.
- the method of the present invention can be carried out to practice using any one of the various apparatus well known in the state of the art of the type described in the aforementioned patent US-A-6688226 .
- Different polymer deposition patterns can be obtained by selecting different combinations of rotational speeds and directions of the tubular core and movement speeds and directions of the injection nozzle.
- By simultaneously using one or more nozzles for the high-density component and one or more nozzles for the low-density component it is possible to deposit the high-density ribs and the low-density filling in one and the same operation when there are discoidal ribs or a single helical rib, or several parallel helical ribs with one and the same rotational direction.
- the ribs When there are cross-linked helical ribs with opposite rotational directions forming a grid, the ribs must first be formed by depositing the high-density component and curing, and the spaces between the ribs can then be filled in by means of the low-density component.
- the high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures comprises according to any one of the embodiments shown a central tubular core 1 suitable for being coupled onto a shaft or rotating support (not shown) and a stratified structure 2 arranged on an outer surface of said tubular core 1.
- the aforementioned stratified structure 2 comprises a continuous high-density inner layer 3a in contact with said outer surface of the tubular core 1, helical or discoidal high-density ribs 3b arranged on said continuous high-density inner layer 3a, a low-density filling 4 also arranged on the continuous high-density inner layer 3a filling in separating spaces between said high-density ribs 3b, a continuous high-density outer layer 3c supported on said high-density ribs 3b and on said low-density filling 4, and discoidal high-density enclosure walls 3d closing the stratified structure 2 at the ends of the sleeve.
- the aforementioned high-density enclosure walls 3d are connected to the continuous high-density inner layer 3a and to the continuous high-density outer layer 3c.
- the continuous high-density inner layer 3a, the high-density ribs 3b and the high-density enclosure walls 3d are made from a plurality of overlaid strata of a high-density component, such as polyurethane with a density comprised between 1.0 g/cm 3 and 1.6 g/cm 3 deposited on an outer surface of the tubular core 1.
- a high-density component such as polyurethane with a density comprised between 1.0 g/cm 3 and 1.6 g/cm 3 deposited on an outer surface of the tubular core 1.
- This high-density component is deposited when it is in a solidifiable fluid state by means of one or more injection nozzles (not shown) installed on a movable carriage which moves on a track parallel to the axis of said tubular core 1 while the tubular core 1 is rotating.
- the low-density filling 4 is generally made from a plurality of strata of a low-density component, such as low-density polyurethane, deposited when the component is in a solidifiable fluid state similarly to that described above.
- the low-density component for the filling 4 can be deposited at the same time as the high-density component for the continuous high-density inner layer, ribs and enclosure walls 3a, 3b, 3d using independent nozzles.
- the continuous high-density outer layer 3c is made from a plurality of overlaid strata of a high-density component, such as polyurethane with a density comprised between 1.0 g/cm 3 and 1.6 g/cm 3 deposited on outer surfaces of the high-density ribs 3b, high-density enclosure walls 3d and low-density filling 4 using the component in a solidifiable fluid state by means of a technique similar to that described above.
- a high-density component such as polyurethane with a density comprised between 1.0 g/cm 3 and 1.6 g/cm 3 deposited on outer surfaces of the high-density ribs 3b, high-density enclosure walls 3d and low-density filling 4 using the component in a solidifiable fluid state by means of a technique similar to that described above.
- the high-density component forming the high-density continuous inner layer, ribs and enclosure walls 3a, 3b, 3d can be deposited first, next this high-density component can be cured, then the low-density component forming the filling 4 can be deposited directly inside each cell and the high-density component forming the continuous high-density outer layer 3c can be deposited on the high-density ribs and enclosure walls 3b, 3d and low-density filling 4 and the high- and low-density components not previously cured can finally be cured.
Abstract
Description
- The present invention relates to a high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures which can be used, for example, in offset printers or rolling bodies.
- Sleeves for printing or rolling cylinders formed by a central tubular core on which there is arranged a stratified structure of a polymeric material, such as polyurethane, are known. For the sleeves to be operative, i.e., for them to withstand high pressure loads on their outer surface, the polymer used is a high-density polymer. However, when the thickness of a sleeve is considerable, for example because it has to cover a large outer diameter with respect to the diameter of the tubular core, a continuous stratified structure of high-density polymer imposes a significantly high weight which makes it necessary for more than one operator or a controllable manipulator to manipulate the sleeve, making it difficult to use.
- Sleeves for printing or rolling cylinders are also known in which, to lighten the weight the stratified structure comprises an optional continuous inner layer of high-density polymer in contact with the central tubular core, then a continuous intermediate layer of low-density polymer, and finally a continuous outer layer of high-density polymer. A drawback of this sleeve is that when it is subjected to the high working pressures that are common in the offset printing and in other types of printing or rolling, the intermediate layer of low-density polymer has the risk of giving way and due to considerable pressure stresses, the low-density intermediate layer is crushed and therefore loses the cylindrical shape of the sleeve. The low-density intermediate layer is furthermore exposed at the ends of the sleeve and tends to expand at said ends due to contact with atmospheric agents, which may end up affecting the cylindrical surface regularity and dimensional stability of the outer diameter of the sleeve.
- Patent
US-A-6688226 describes an apparatus for manufacturing sleeves for offset printing cylinders. The apparatus shown inFigure 2 of the publication of this patent comprises means for supporting and rotating a tubular core about an axis and an injection nozzle installed on a movable carriage which moves along a track parallel to the axis of the tubular core. Multiple radially overlaid strata of a solidifiable fluid polymer are deposited on an outer surface of the tubular core while the latter is rotating by means of the nozzle. - According to a first aspect, the present invention provides a high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures. The sleeve is of the type comprising a central tubular core suitable for being coupled onto a shaft and a stratified structure arranged on an outer surface of said tubular core. The aforementioned stratified structure comprises a plurality of strata of one or more components with different densities overlaid radially with a continuous high-density outer layer. The sleeve of the present invention is characterized in that said stratified structure comprises a plurality of strata of a high-density component overlaid radially and separated axially, forming high-density ribs which can be helical or discoidal, a low-density component filling in separating spaces between the aforementioned high-density ribs forming a low-density filling, and a plurality of strata of a high-density component overlaid radially, forming the aforementioned continuous high-density outer layer which is supported on said high-density ribs and on said low-density filling.
- Preferably, the sleeve of the present invention further comprises a plurality of strata of a high-density component overlaid radially, forming a continuous high-density inner layer in contact with said outer surface of the tubular core and on which the high-density ribs and the low-density filling are arranged. It is also preferable for the sleeve to have discoidal high-density enclosure walls formed by multiple strata at the ends of the sleeve and connected with the high-density inner and outer layers. A polymer such as polyurethane, for example, which can have different densities, is a suitable component for the stratified structure of the sleeves of the present invention. A suitable polyurethane for making the continuous inner layer, the continuous outer layer and the high-density ribs has, for example, a density comprised between 1.0 g/cm3 and 1.6 g/cm3. The density of the polyurethane for the low-density filling can be significantly low because in some cases the main function of the filling is to simply support the strata of the continuous high-density outer layer while they are being deposited.
- As mentioned above, the high-density ribs can be of a helical or discoidal configuration. If the helical configuration is used, the stratified structure can comprise a single high-density rib of a helical configuration, two or more formations of high-density ribs of a helical configuration which may or may not be parallel with one and the same rotational direction, or two or more cross-linked formations of high-density ribs of a helical configuration with opposite rotational directions. When two or more formations of high-density ribs of a helical configuration are used, either with the same rotational direction or opposite rotational directions, they can all have one and the same helix pitch or different helix pitches. Likewise, each of the formations of helical ribs can optionally have a variable pitch.
- In any case, the high-density ribs will be relatively thin in comparison with the spaces between them filled with the low-density filling, such that the sleeve can be very lightweight in comparison with the sleeves of the prior art, whereas the ribs and high-density enclosure walls support the continuous high-density outer layer substantially preventing the low-density filling from being crushed and assuring the cylindrical shape of the sleeve even under high working pressures. The discoidal enclosure walls further prevent the low-density filling from contacting with atmospheric agents at the ends of the sleeve and prevent the expansion thereof.
- According to a second aspect, the present invention provides a method for manufacturing a high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures. The method is of the type which comprises depositing multiple radially overlaid layers of a solidifiable fluid component of different densities on an outer surface of a tubular core while the latter is rotating by means of one or more injection nozzles installed on a movable carriage which moves on a track parallel to the axis of said tubular core. The method of the present invention is characterized in that it comprises depositing layers of a high-density component overlaid radially and separated axially to form helical or discoidal high-density rids, depositing a low-density component in separating spaces between the aforementioned high-density ribs to form a low-density filling therein, and depositing strata of a high-density component to form a continuous high-density outer layer supported on said high-density ribs and on said low-density filling.
- Preferably, the method further comprises depositing strata of a high-density component to form a continuous high-density inner layer on said outer surface of the tubular core before depositing the high-density ribs and the low-density filling, such that the high-density ribs and the low-density filling are deposited on this continuous high-density inner layer. The method also contemplates forming enclosure walls made up of multiple strata of a high-density component at the ends of the sleeve to prevent the exposure of the low-density filling to atmospheric agents at the ends of the sleeve.
- The method of the present invention can be carried out to practice using any one of the various apparatus well known in the state of the art of the type described in the aforementioned patent
US-A-6688226 . Different polymer deposition patterns can be obtained by selecting different combinations of rotational speeds and directions of the tubular core and movement speeds and directions of the injection nozzle. By simultaneously using one or more nozzles for the high-density component and one or more nozzles for the low-density component it is possible to deposit the high-density ribs and the low-density filling in one and the same operation when there are discoidal ribs or a single helical rib, or several parallel helical ribs with one and the same rotational direction. When there are cross-linked helical ribs with opposite rotational directions forming a grid, the ribs must first be formed by depositing the high-density component and curing, and the spaces between the ribs can then be filled in by means of the low-density component. - The foregoing and other features and advantages will be more fully understood from the following detailed description of several embodiments in reference to the attached drawings, in which:
-
Figures 1A and 1B are cross-section views of an ultra-light interchangeable sleeve according to a first embodiment of the present invention taken along a transverse plane perpendicular to the axis of the sleeve and along a longitudinal plane comprising the axis of the sleeve, respectively; -
Figure 2 is a cross-section view of an ultra-light interchangeable sleeve according to a second embodiment of the present invention taken along a longitudinal plane comprising the axis of the sleeve; -
Figure 3 is a cross-section view of an ultra-light interchangeable sleeve according to a third embodiment of the present invention taken along a longitudinal plane comprising the axis of the sleeve; and -
Figure 4 is a cross-section view of an ultra-light interchangeable sleeve according to a fourth embodiment of the present invention taken along a longitudinal plane comprising the axis of the sleeve. - Referring first to the figures in general, the high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures comprises according to any one of the embodiments shown a central tubular core 1 suitable for being coupled onto a shaft or rotating support (not shown) and a stratified
structure 2 arranged on an outer surface of said tubular core 1. The aforementionedstratified structure 2 comprises a continuous high-densityinner layer 3a in contact with said outer surface of the tubular core 1, helical or discoidal high-density ribs 3b arranged on said continuous high-densityinner layer 3a, a low-density filling 4 also arranged on the continuous high-densityinner layer 3a filling in separating spaces between said high-density ribs 3b, a continuous high-densityouter layer 3c supported on said high-density ribs 3b and on said low-density filling 4, and discoidal high-density enclosure walls 3d closing thestratified structure 2 at the ends of the sleeve. The aforementioned high-density enclosure walls 3d are connected to the continuous high-densityinner layer 3a and to the continuous high-densityouter layer 3c. - The continuous high-density
inner layer 3a, the high-density ribs 3b and the high-density enclosure walls 3d are made from a plurality of overlaid strata of a high-density component, such as polyurethane with a density comprised between 1.0 g/cm3 and 1.6 g/cm3 deposited on an outer surface of the tubular core 1. This high-density component is deposited when it is in a solidifiable fluid state by means of one or more injection nozzles (not shown) installed on a movable carriage which moves on a track parallel to the axis of said tubular core 1 while the tubular core 1 is rotating. The strata are overlaid radially and separated axially in the high-density ribs 3b and in the high-density enclosure walls 3d. The helical or discoidal configuration of the high-density ribs 3b is obtained by selecting different combinations of rotational speeds and directions of the tubular core 1 and movement speeds and directions of the injection nozzle or nozzles along the tubular core 1. - The low-
density filling 4 is generally made from a plurality of strata of a low-density component, such as low-density polyurethane, deposited when the component is in a solidifiable fluid state similarly to that described above. The low-density component for thefilling 4 can be deposited at the same time as the high-density component for the continuous high-density inner layer, ribs andenclosure walls outer layer 3c is made from a plurality of overlaid strata of a high-density component, such as polyurethane with a density comprised between 1.0 g/cm3 and 1.6 g/cm3 deposited on outer surfaces of the high-density ribs 3b, high-density enclosure walls 3d and low-density filling 4 using the component in a solidifiable fluid state by means of a technique similar to that described above. When the deposition of both high- and low-density components has finished, they are subjected to a curing process and finally the outer surface of the continuous high-densityouter layer 3c can be rectified by means of a machining process. - Alternatively, in some cases, for example when a configuration of cross-linked high-density ribs forming a grid with multiple cells is used, the high-density component forming the high-density continuous inner layer, ribs and
enclosure walls filling 4 can be deposited directly inside each cell and the high-density component forming the continuous high-densityouter layer 3c can be deposited on the high-density ribs andenclosure walls density filling 4 and the high- and low-density components not previously cured can finally be cured. -
Figures 1A and 1B show a first embodiment of the ultra-light interchangeable sleeve of the present invention where thestratified structure 2 includes a single high-density rib 3b of a helical configuration with a predetermined rotational direction. This single high-density rib 3b is connected to the continuous high-density inner andouter layers density enclosure walls 3d. Therefore, the low-density filling 4 has the shape of a helical block with the same rotational direction. The high-density rib 3b and the low-density filling 4 are illustrated with a constant helix pitch, although they could alternatively have a variable helix pitch along the length of the sleeve. -
Figure 2 shows a second embodiment of the ultra-light interchangeable sleeve of the present invention where thestratified structure 2 includes two formations of high-density ribs 3b of a helical configuration with one and the same rotational direction. Both high-density ribs 3b are connected to the continuous high-density inner andouter layers density enclosure walls 3d, and the low-density filling 4 also has the shape of two helical blocks with the same rotational direction. It will be understood that this second embodiment can be extended to any other number of high-density ribs 3b greater than two. -
Figure 3 shows a third embodiment of the ultra-light interchangeable sleeve of the present invention where thestratified structure 2 includes two formations of high-density ribs 3b of a helical configuration with opposite rotational directions, such that high-density ribs 3b are cross-linked forming a grid which defines multiple cells of an approximately rhombic configuration. In this case, both high-density ribs 3b are connected to the continuous high-density inner andouter layers density enclosure walls 3d, and the low-density filling 4 is configured as a plurality of approximately rhombus-shaped curved blocks. It will be understood that this second embodiment can be extended to any other number of high-density ribs 3b greater than two. -
Figure 4 shows a fourth embodiment of the ultra-light interchangeable sleeve of the present invention where thestratified structure 2 includes a plurality of high-density ribs 3b of discoidal configuration parallel to the high-density enclosure walls 3d located at the ends of the sleeve. Said plurality of high-density ribs 3b are connected to the continuous high-density inner andouter layers density filling 4 is configured as a plurality of annular-shaped blocks. - A person skilled in the art will be able to make modifications and variations from the embodiments shown and described without departing from the scope of the present invention as it is defined in the attached claims.
Claims (10)
- A high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures, of the type comprising a central tubular core (1) suitable for being coupled onto a shaft, said tubular core (1) defining an outer surface on which there is arranged a stratified structure (2) comprising a plurality of strata of one or more components with different densities overlaid radially with a continuous high-density outer layer (3c), characterized in that said stratified structure (2) comprises a plurality of strata of a high-density component overlaid radially and separated axially, forming helical or discoidal high-density ribs (3b), separating spaces between the aforementioned high-density ribs (3b) being filled with a low-density component forming a low-density filling (4), and said continuous high-density outer layer (3c) being supported on said high-density ribs (3b) and on said low-density filling (4).
- The sleeve according to claim 1, characterized in that said high-density component is high-density polyurethane and said low-density component is low-density polyurethane.
- The sleeve according to claim 1 or 2, characterized in that the density of said high-density component is comprised between 1.0 g/cm3 and 1.6 g/cm3.
- The sleeve according to claim 1, characterized in that it comprises at least two formations of high-density ribs (3b) of a helical configuration with one and the same rotational direction.
- The sleeve according to claim 1, characterized in that it comprises at least two cross-linked formations of high-density ribs (3b) of a helical configuration with opposite rotational directions.
- The sleeve according to any one of the preceding claims, characterized in that it comprises discoidal high-density enclosure walls (3d) closing the stratified structure (2) at the ends of the sleeve.
- The sleeve according to any one of the preceding claims, characterized in that it comprises a plurality of strata of a high-density component overlaid radially, forming a continuous high-density inner layer (3a) in contact with said outer surface of the tubular core (1) and on which the high-density ribs (3b) and the low-density filling (4) are arranged.
- A method for manufacturing a high-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subjected to high working pressures, of the type which comprises depositing multiple radially overlaid strata of a solidifiable fluid component of different densities on an outer surface of a central tubular core (1) while the latter is rotating by means of one or more injection nozzles installed on a movable carriage which moves on a track parallel to the axis of said tubular core (1), characterized in that it comprises:depositing multiple axially separated strata of a high-density component to form helical or discoidal high-density rids (3b);filling in separating spaces between the aforementioned high-density ribs (3b) with the low-density component to form a low-density filling (4) therein; anddepositing multiple strata of a high-density component to form a continuous high-density outer layer (3c) supported on said high-density ribs (3b) and on said low-density filling (4).
- The method according to claim 7, characterized in that it comprises depositing multiple strata of a high-density component to form a continuous high-density inner layer (3a) on said outer surface of the tubular core (1) before depositing the high-density ribs (3b) and the low-density filling (4).
- The method according to claim 7, characterized in that it comprises depositing multiple axially separated strata of a high-density component to form discoidal high-density enclosure walls (3d) at the ends of the sleeve.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200803564A ES2363908B1 (en) | 2008-12-11 | 2008-12-11 | HIGH RESISTANCE ULTRALIGERA EXCHANGABLE SHIRT FOR SUPPORT OF PRINT OR ROLLING ELEMENTS SUBJECT TO HIGH WORK PRESSURES. |
PCT/ES2009/000569 WO2010066923A1 (en) | 2008-12-11 | 2009-12-11 | High-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subject to high working pressures |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2368719A1 true EP2368719A1 (en) | 2011-09-28 |
EP2368719A4 EP2368719A4 (en) | 2012-10-17 |
EP2368719B1 EP2368719B1 (en) | 2013-05-29 |
Family
ID=42242373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09831498.2A Not-in-force EP2368719B1 (en) | 2008-12-11 | 2009-12-11 | High-strength, ultra-light interchangeable sleeve for supporting printing or rolling elements subject to high working pressures |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2368719B1 (en) |
ES (1) | ES2363908B1 (en) |
WO (1) | WO2010066923A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5131325A (en) * | 1991-04-30 | 1992-07-21 | Flexographic Technology, Inc. | Reusable printing sleeve |
ES2140289B1 (en) * | 1996-04-02 | 2000-08-16 | Windmoeller & Hoelscher | BUSHING FOR PRINTER CYLINDERS. |
JP3357587B2 (en) * | 1997-11-14 | 2002-12-16 | 住友ゴム工業株式会社 | Printing blanket |
IT1318961B1 (en) | 2000-10-03 | 2003-09-19 | Erminio Rossini S P A Ora Ross | PERFECT SLEEVE FOR SUBSIDIARY CYLINDER OF AN INDIRECT OR "OFFSET" PRINTING MACHINE. |
ES2292294B1 (en) * | 2005-04-21 | 2009-03-16 | Personas Y Tecnologia, S.L. | SHIRT FOR PRINTER CYLINDER. |
US20080070042A1 (en) * | 2006-09-20 | 2008-03-20 | Day International, Inc. | Printing blanket or sleeve including thermoplastic polyurethane or thermoplastic polyurethane alloy layers |
-
2008
- 2008-12-11 ES ES200803564A patent/ES2363908B1/en not_active Expired - Fee Related
-
2009
- 2009-12-11 EP EP09831498.2A patent/EP2368719B1/en not_active Not-in-force
- 2009-12-11 WO PCT/ES2009/000569 patent/WO2010066923A1/en active Application Filing
Non-Patent Citations (2)
Title |
---|
No further relevant documents disclosed * |
See also references of WO2010066923A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2363908B1 (en) | 2012-07-04 |
WO2010066923A1 (en) | 2010-06-17 |
EP2368719B1 (en) | 2013-05-29 |
EP2368719A4 (en) | 2012-10-17 |
ES2363908A1 (en) | 2011-08-19 |
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