US20060163420A1 - High-stiffness winding core - Google Patents
High-stiffness winding core Download PDFInfo
- Publication number
- US20060163420A1 US20060163420A1 US11/005,090 US509004A US2006163420A1 US 20060163420 A1 US20060163420 A1 US 20060163420A1 US 509004 A US509004 A US 509004A US 2006163420 A1 US2006163420 A1 US 2006163420A1
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- US
- United States
- Prior art keywords
- shell
- winding core
- core
- end fittings
- winding
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/30—Arrangements to facilitate driving or braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/185—End caps, plugs or adapters
Definitions
- the invention relates to winding cores for web materials such as paper.
- Web converters such as printers or the like continually strive to increase productivity of converting processes by increasing the total amount of web throughput per unit time.
- rotogravure printer designers are currently developing 4.32 meter wide printing presses for high-speed printing. Paper supply rolls for such presses would weigh in excess of 7 tons. Applications such as this place extreme demands on the stability of current winding cores.
- a chief difficulty with conventional paperboard winding cores is that in the increased 4.32 meter length, the core generally is not stiff enough to avoid the core encountering its natural frequency when the unwinding roll reaches the end of the paper and the rotational speed of the core is at a maximum. This can lead to extreme vibration and catastrophic failure of the core.
- a potential solution to the problem is to increase core stiffness by increasing core diameter, but this would be undesirable if it meant that the cores would not be compatible with existing winding and unwinding machinery, as would be the case if the inside diameter of the core were increased.
- a core is typically mounted on a rotating expandable chuck that is inserted into each end of the core and expanded to grip the inside of the core so that the core does not slip relative to the chuck as torque is applied therebetween.
- the rotation of the core is achieved by means of a drive coupled to one or both of the chucks, and the core is rotated to achieve web speeds of, for example, 15 to 16 m/s.
- the rolls of material are often subjected to substantial circumferential acceleration and deceleration by the winding machines. This, in turn, subjects the engaged ends of the paperboard roll to substantial torque forces. This often leads to some slippage of the chuck on the inside of the core.
- the invention addresses the above needs and achieves other advantages, by providing a winding core that has high stiffness by virtue of being formed predominantly of fiber-reinforced plastic (FRP) such as fiber glass material or the like.
- the winding core comprises a tubular shell of FRP, which is substantially stiffer than a paperboard tube of the same dimensions.
- the winding core also includes a pair of generally tubular end fittings bonded to the inner surface of the shell at the opposite ends, the end fittings comprising a material having a durometer hardness substantially lower than that of the shell and being positioned to be engaged by winding or unwinding chucks.
- Each end fitting has an axial length that is a relatively small fraction of the length of the shell.
- the winding core in one embodiment has a length sufficient to accommodate 4.32-meter wide paper as required in the new rotogravure printing presses.
- the end fittings comprise a coating of the material having a relatively low durometer hardness in comparison with the FRP shell.
- the material can comprise a rubbery or elastomeric material such a polyurethane or the like.
- the coating can be provided by depositing the material in fluid form onto the inner surface of the shell while the shell is rotated about its axis so that the material is slung radially outward by centrifugal force and therefore flows to form a coating of substantially uniform thickness about the circumference of the shell.
- the end fittings could be separately manufactured as tubular articles and inserted into the shell and bonded thereto in suitable fashion.
- Winding cores in accordance with the invention can have nominal inside diameters ranging from about 76 mm (3 inches) to about 560 mm (22 inches), and wall thicknesses ranging from about 9 mm (0.34 inch) to about 18 mm (0.710 inch).
- the winding cores can have lengths exceeding 1 meter, up to a length sufficient to accommodate 4.32-meter wide paper used in the new rotogravure printing presses.
- the end fittings can each have an axial length of about 50 to 300 mm and a radial thickness of about 1 to 6 mm.
- FIG. 1 is a perspective view of a winding core in accordance with one embodiment of the invention, with a chuck to be inserted into the core;
- FIG. 2 is a cross-sectional view along line 2 - 2 in FIG. 1 , after insertion of the chuck;
- FIG. 3 is a cross-sectional view along line 3 - 3 in FIG. 2 .
- FIGS. 1-3 illustrate a tubular article or winding core 10 in accordance with one embodiment of the invention.
- the winding core 10 comprises a tubular shell 12 of fiber-reinforced plastic (FRP), which can be formed, for example, by a pultrusion process in which resin-impregnated fiber tows are pulled linearly through an annular die about a center cylindrical mandrel or support.
- FRP fiber-reinforced plastic
- the particular manner in which the shell 12 is formed is not critical to the invention, and other processes for forming the shell can be used if desired.
- the FRP material can comprise various fiber materials and resin matrix materials.
- the fibers can be, for example, glass, carbon, aramid, polyester, and the like.
- the resin matrix can comprise any known suitable materials such as epoxy, polyester, nylon, vinyl ester, and the like.
- the winding core also includes a pair of tubular end fittings 14 (only one shown) respectively mounted within the opposite ends of the shell 12 and bonded to the inner surface of the shell.
- Each end fitting has an axial length substantially less than the length of the shell 12 , and need be only long enough to be engaged by the chucks 20 (only one shown) that are inserted into the ends of the core to grip and support the core during winding or unwinding of a roll of material wound about the core.
- each end fitting has an axial length ranging from about 100 mm to about 300 mm, whereas the winding core's length generally exceeds 1 meter and may be up to about 4.3 meters.
- the end fittings 14 are constructed to have a durometer hardness substantially lower than that of the FRP shell 12 .
- the FRP shell has a hardness too great to enable the chucks to grip the shell with enough frictional resistance to prevent slippage between the core and the chucks during certain operations when there is acceleration or deceleration of the core or chucks.
- the end fittings provide a surface that the chucks can more readily “dig into” and frictionally grip so that slippage is prevented.
- the end fittings are preferably constructed of a deformable material such as an elastomeric or rubbery type of material. Polyurethane is a particularly suitable material for the end fittings, but other materials can be used instead, including paperboard or other relatively soft material.
- the end fittings 14 can be formed and bonded to the shell 12 in various ways.
- An in situ method of forming the end fittings comprises rotating the shell 12 about its axis and applying the end fitting material in fluid form to the inner surface of the shell at its opposite ends. Centrifugal force slings the material outwardly and causes it to flow along the inner surface of the shell so that a coating of substantially uniform thickness is formed on the inner surface at the ends of the shell. The material then cures to form a coating at each end of the shell.
- the end fittings could be formed separately and then bonded to the shell with a suitable adhesive.
- the end fittings could be formed as thin-walled paperboard tubes and then adhered to the inner surface of the shell.
- the end fittings 14 provide their intended function in part by being deformed in the radial direction by the inserted chucks, which in some cases have leaves or lugs that are expandable radially outwardly to engage the inner surface of a core. Accordingly, the end fittings desirably should have a radial thickness sufficient to allow some degree of radial deformation.
- the radial thickness can be about 1 mm to 6 mm.
- the durometer hardness of the end fittings 14 preferably should be less than about 20 Rockwell C.
- Winding cores in accordance with the invention can be formed in a wide range of sizes. Winding cores tend to be somewhat standardized in terms of their inside diameters, but multiple standards exists. For example, commonly used cores have nominal inside diameters of about 76 mm (3 inches), 127 mm (5 inches), 152 mm (6 inches), 203 mm (8 inches), 254 mm (10 inches), 305 mm (12 inches), 406 mm (16 inches), and 559 mm (22 inches). There are several commonly used wall thicknesses for cores, including 8.6 mm (0.34 inch), 12.7 mm (0.5 inch), 13.7 mm (0.54 inch), 15 mm (0.59 inch), 15.2 mm (0.60 inch), and 18 mm (0.71 inch). Of course, while the invention can be applied to cores having these dimensions, the invention is not limited to any particular inside diameter and wall thickness dimensions.
- the winding cores in accordance with the invention generally exceed 1 meter in length, and can be long enough to accommodate 4.32-meter wide paper used in the new rotogravure printing presses that have recently been developed.
- the high stiffness provided by the FRP shell 12 of the winding core leads to an increase in the natural frequency of the core relative to a conventional paperboard core, so that the core can be rotated at a higher speed before encountering its first natural frequency.
- suitable design of the core i.e., material selection, wall thickness, etc.
- the invention enables the advantages of high-stiffness FRP material to be enjoyed in winding cores, while still retaining sufficient frictional gripping of the cores by winding/unwinding chucks.
Abstract
A winding core has high stiffness by virtue of being formed predominantly of fiber-reinforced plastic (FRP) such as fiber glass material or the like. In particular, the winding core comprises a tubular shell of FRP, and a pair of generally tubular end fittings bonded to the inner surface of the shell at the opposite ends, the end fittings comprising a material having a durometer hardness substantially lower than that of the shell and being positioned to be engaged by wind/unwind chucks. Each end fitting has an axial length that is a relatively small fraction of the length of the shell.
Description
- The invention relates to winding cores for web materials such as paper.
- Web converters such as printers or the like continually strive to increase productivity of converting processes by increasing the total amount of web throughput per unit time. To this end, there has been a continual push toward wider webs and higher web speeds, which lead to longer winding cores that must rotate at higher rotational speeds and must support heavier rolls of the wider web material. For instance, rotogravure printer designers are currently developing 4.32 meter wide printing presses for high-speed printing. Paper supply rolls for such presses would weigh in excess of 7 tons. Applications such as this place extreme demands on the stability of current winding cores. A chief difficulty with conventional paperboard winding cores is that in the increased 4.32 meter length, the core generally is not stiff enough to avoid the core encountering its natural frequency when the unwinding roll reaches the end of the paper and the rotational speed of the core is at a maximum. This can lead to extreme vibration and catastrophic failure of the core. A potential solution to the problem is to increase core stiffness by increasing core diameter, but this would be undesirable if it meant that the cores would not be compatible with existing winding and unwinding machinery, as would be the case if the inside diameter of the core were increased.
- During a winding or unwinding operation, a core is typically mounted on a rotating expandable chuck that is inserted into each end of the core and expanded to grip the inside of the core so that the core does not slip relative to the chuck as torque is applied therebetween. Typically, the rotation of the core is achieved by means of a drive coupled to one or both of the chucks, and the core is rotated to achieve web speeds of, for example, 15 to 16 m/s. The rolls of material are often subjected to substantial circumferential acceleration and deceleration by the winding machines. This, in turn, subjects the engaged ends of the paperboard roll to substantial torque forces. This often leads to some slippage of the chuck on the inside of the core. In an extreme situation, the slippage can lead to “chew-out” wherein the core is essentially destroyed by the chuck. Thus, for extreme applications such as 4.32 meter wide gravure presses, there is a need for a core with a high stiffness and adequate resistance to chew-out, but it is desired to maintain standard core diameters for compatibility with existing winding and unwinding equipment.
- The invention addresses the above needs and achieves other advantages, by providing a winding core that has high stiffness by virtue of being formed predominantly of fiber-reinforced plastic (FRP) such as fiber glass material or the like. In particular, the winding core comprises a tubular shell of FRP, which is substantially stiffer than a paperboard tube of the same dimensions. However, expandable chucks cannot readily “dig into” and grip the FRP shell because of its hardness. Accordingly, the winding core also includes a pair of generally tubular end fittings bonded to the inner surface of the shell at the opposite ends, the end fittings comprising a material having a durometer hardness substantially lower than that of the shell and being positioned to be engaged by winding or unwinding chucks. Each end fitting has an axial length that is a relatively small fraction of the length of the shell.
- The winding core in one embodiment has a length sufficient to accommodate 4.32-meter wide paper as required in the new rotogravure printing presses.
- In one embodiment of the invention, the end fittings comprise a coating of the material having a relatively low durometer hardness in comparison with the FRP shell. The material can comprise a rubbery or elastomeric material such a polyurethane or the like. The coating can be provided by depositing the material in fluid form onto the inner surface of the shell while the shell is rotated about its axis so that the material is slung radially outward by centrifugal force and therefore flows to form a coating of substantially uniform thickness about the circumference of the shell. Alternatively, the end fittings could be separately manufactured as tubular articles and inserted into the shell and bonded thereto in suitable fashion.
- Winding cores in accordance with the invention can have nominal inside diameters ranging from about 76 mm (3 inches) to about 560 mm (22 inches), and wall thicknesses ranging from about 9 mm (0.34 inch) to about 18 mm (0.710 inch). The winding cores can have lengths exceeding 1 meter, up to a length sufficient to accommodate 4.32-meter wide paper used in the new rotogravure printing presses. The end fittings can each have an axial length of about 50 to 300 mm and a radial thickness of about 1 to 6 mm.
- Having thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
-
FIG. 1 is a perspective view of a winding core in accordance with one embodiment of the invention, with a chuck to be inserted into the core; -
FIG. 2 is a cross-sectional view along line 2-2 inFIG. 1 , after insertion of the chuck; and -
FIG. 3 is a cross-sectional view along line 3-3 inFIG. 2 . - The present inventions now will be described more fully hereinafter with reference to the accompanying drawings, in which some but not all embodiments of the invention are shown. Indeed, these inventions may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.
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FIGS. 1-3 illustrate a tubular article or windingcore 10 in accordance with one embodiment of the invention. The windingcore 10 comprises atubular shell 12 of fiber-reinforced plastic (FRP), which can be formed, for example, by a pultrusion process in which resin-impregnated fiber tows are pulled linearly through an annular die about a center cylindrical mandrel or support. The particular manner in which theshell 12 is formed is not critical to the invention, and other processes for forming the shell can be used if desired. The FRP material can comprise various fiber materials and resin matrix materials. The fibers can be, for example, glass, carbon, aramid, polyester, and the like. The resin matrix can comprise any known suitable materials such as epoxy, polyester, nylon, vinyl ester, and the like. - The winding core also includes a pair of tubular end fittings 14 (only one shown) respectively mounted within the opposite ends of the
shell 12 and bonded to the inner surface of the shell. Each end fitting has an axial length substantially less than the length of theshell 12, and need be only long enough to be engaged by the chucks 20 (only one shown) that are inserted into the ends of the core to grip and support the core during winding or unwinding of a roll of material wound about the core. Thus, in preferred embodiments of the invention, each end fitting has an axial length ranging from about 100 mm to about 300 mm, whereas the winding core's length generally exceeds 1 meter and may be up to about 4.3 meters. - The
end fittings 14 are constructed to have a durometer hardness substantially lower than that of theFRP shell 12. In general, the FRP shell has a hardness too great to enable the chucks to grip the shell with enough frictional resistance to prevent slippage between the core and the chucks during certain operations when there is acceleration or deceleration of the core or chucks. The end fittings provide a surface that the chucks can more readily “dig into” and frictionally grip so that slippage is prevented. Toward this end, the end fittings are preferably constructed of a deformable material such as an elastomeric or rubbery type of material. Polyurethane is a particularly suitable material for the end fittings, but other materials can be used instead, including paperboard or other relatively soft material. - The
end fittings 14 can be formed and bonded to theshell 12 in various ways. An in situ method of forming the end fittings comprises rotating theshell 12 about its axis and applying the end fitting material in fluid form to the inner surface of the shell at its opposite ends. Centrifugal force slings the material outwardly and causes it to flow along the inner surface of the shell so that a coating of substantially uniform thickness is formed on the inner surface at the ends of the shell. The material then cures to form a coating at each end of the shell. Alternatively, the end fittings could be formed separately and then bonded to the shell with a suitable adhesive. For instance, the end fittings could be formed as thin-walled paperboard tubes and then adhered to the inner surface of the shell. - The
end fittings 14 provide their intended function in part by being deformed in the radial direction by the inserted chucks, which in some cases have leaves or lugs that are expandable radially outwardly to engage the inner surface of a core. Accordingly, the end fittings desirably should have a radial thickness sufficient to allow some degree of radial deformation. Advantageously, the radial thickness can be about 1 mm to 6 mm. - The durometer hardness of the
end fittings 14 preferably should be less than about 20 Rockwell C. - Winding cores in accordance with the invention can be formed in a wide range of sizes. Winding cores tend to be somewhat standardized in terms of their inside diameters, but multiple standards exists. For example, commonly used cores have nominal inside diameters of about 76 mm (3 inches), 127 mm (5 inches), 152 mm (6 inches), 203 mm (8 inches), 254 mm (10 inches), 305 mm (12 inches), 406 mm (16 inches), and 559 mm (22 inches). There are several commonly used wall thicknesses for cores, including 8.6 mm (0.34 inch), 12.7 mm (0.5 inch), 13.7 mm (0.54 inch), 15 mm (0.59 inch), 15.2 mm (0.60 inch), and 18 mm (0.71 inch). Of course, while the invention can be applied to cores having these dimensions, the invention is not limited to any particular inside diameter and wall thickness dimensions.
- In terms of length, the winding cores in accordance with the invention generally exceed 1 meter in length, and can be long enough to accommodate 4.32-meter wide paper used in the new rotogravure printing presses that have recently been developed. The high stiffness provided by the
FRP shell 12 of the winding core leads to an increase in the natural frequency of the core relative to a conventional paperboard core, so that the core can be rotated at a higher speed before encountering its first natural frequency. By suitable design of the core (i.e., material selection, wall thickness, etc.), it can be assured that the natural frequency is higher than the highest rotational speed expected to be encountered by the core during use. - The invention enables the advantages of high-stiffness FRP material to be enjoyed in winding cores, while still retaining sufficient frictional gripping of the cores by winding/unwinding chucks.
- Many modifications and other embodiments of the inventions set forth herein will come to mind to one skilled in the art to which these inventions pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (11)
1. A winding core, comprising:
a fiber-reinforced plastic shell of cylindrical form, the shell having an outer surface and an inner surface and having opposite ends; and
a pair of generally tubular end fittings bonded to the inner surface of the shell at the opposite ends, the end fittings comprising a material having a durometer hardness substantially lower than that of the shell and being positioned to be engaged and frictionally gripped by chucks inserted into the opposite ends of the shell.
2. The winding core of claim 1 , wherein the end fittings comprise a coating of said material applied to the inner surface of the shell.
3. The winding core of claim 2 , wherein the material comprises polyurethane.
4. The winding core of claim 1 , wherein the shell has a length between the opposite ends sufficient to accommodate a wound material having a width of about 4.3 meters.
5. The winding core of claim 1 , wherein the shell has a nominal inside diameter of about 76 mm and a radial thickness of about 14 to 18 mm.
6. The winding core of claim 1 , wherein the shell has a nominal inside diameter of about 130 to 150 mm and a radial thickness of about 9 to 17 mm.
7. The winding core of claim 1 , wherein the shell has a nominal inside diameter of about 200 to 300 mm and a radial thickness of about 13 mm.
8. The winding core of claim 1 , wherein the shell has a nominal inside diameter of about 415 mm and a radial thickness of about 13 to 16 mm.
9. The winding core of claim 1 , wherein the shell has a nominal inside diameter of about 570 mm and a radial thickness of about 13 to 17 mm.
10. The winding core of claim 1 , wherein each of the end fittings has an axial length of about 50 to 300 mm, and the shell has an axial length exceeding 1 meter.
11. The winding core of claim 1 , wherein each of the end fittings has a radial thickness of about 1 to 6 mm.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/005,090 US20060163420A1 (en) | 2004-12-06 | 2004-12-06 | High-stiffness winding core |
CA002589262A CA2589262A1 (en) | 2004-12-06 | 2005-12-05 | High-stiffness winding core |
KR1020077013761A KR20070086368A (en) | 2004-12-06 | 2005-12-05 | High-stiffness winding core |
PCT/US2005/043784 WO2006062852A1 (en) | 2004-12-06 | 2005-12-05 | High-stiffness winding core |
MX2007006697A MX2007006697A (en) | 2004-12-06 | 2005-12-05 | High-stiffness winding core. |
BRPI0518435-5A BRPI0518435A2 (en) | 2004-12-06 | 2005-12-05 | high rigidity winding core |
CNA2005800418454A CN101072722A (en) | 2004-12-06 | 2005-12-05 | High-stiffness winding core |
EP05852869A EP1819621A1 (en) | 2004-12-06 | 2005-12-05 | High-stiffness winding core |
AU2005314293A AU2005314293A1 (en) | 2004-12-06 | 2005-12-05 | High-stiffness winding core |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/005,090 US20060163420A1 (en) | 2004-12-06 | 2004-12-06 | High-stiffness winding core |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060163420A1 true US20060163420A1 (en) | 2006-07-27 |
Family
ID=36097045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/005,090 Abandoned US20060163420A1 (en) | 2004-12-06 | 2004-12-06 | High-stiffness winding core |
Country Status (9)
Country | Link |
---|---|
US (1) | US20060163420A1 (en) |
EP (1) | EP1819621A1 (en) |
KR (1) | KR20070086368A (en) |
CN (1) | CN101072722A (en) |
AU (1) | AU2005314293A1 (en) |
BR (1) | BRPI0518435A2 (en) |
CA (1) | CA2589262A1 (en) |
MX (1) | MX2007006697A (en) |
WO (1) | WO2006062852A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019169072A1 (en) * | 2018-03-02 | 2019-09-06 | Sonoco Development, Inc. | Core with improved chuck interaction |
US11518645B2 (en) | 2021-03-15 | 2022-12-06 | Sonoco Development, Inc. | Lightweight paper tube structure capable of high loading |
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DE102008041268A1 (en) | 2008-08-14 | 2010-02-18 | Voith Patent Gmbh | Roller for a coating device for direct or indirect coating of liquid or pasty medium on moving paper or cardboard, comprises roller cover made of fiber composite material, cover arranged on the roller cover, and/or a power supply element |
US8770509B2 (en) * | 2011-02-04 | 2014-07-08 | Tama Plastic Industry | Bobbin for roll stock |
CN104495523A (en) * | 2014-11-29 | 2015-04-08 | 东电化日东(上海)电能源有限公司 | Pipe core structure for slitter and adaptor for pipe core structure |
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- 2004-12-06 US US11/005,090 patent/US20060163420A1/en not_active Abandoned
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- 2005-12-05 EP EP05852869A patent/EP1819621A1/en not_active Withdrawn
- 2005-12-05 CN CNA2005800418454A patent/CN101072722A/en active Pending
- 2005-12-05 AU AU2005314293A patent/AU2005314293A1/en not_active Abandoned
- 2005-12-05 WO PCT/US2005/043784 patent/WO2006062852A1/en active Application Filing
- 2005-12-05 BR BRPI0518435-5A patent/BRPI0518435A2/en not_active IP Right Cessation
- 2005-12-05 KR KR1020077013761A patent/KR20070086368A/en not_active Application Discontinuation
- 2005-12-05 CA CA002589262A patent/CA2589262A1/en not_active Abandoned
- 2005-12-05 MX MX2007006697A patent/MX2007006697A/en unknown
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019169072A1 (en) * | 2018-03-02 | 2019-09-06 | Sonoco Development, Inc. | Core with improved chuck interaction |
US11279077B2 (en) * | 2018-03-02 | 2022-03-22 | Sonoco Development, Inc. | Core with improved chuck interaction |
US11787103B2 (en) | 2018-03-02 | 2023-10-17 | Sonoco Development, Inc. | Core with improved chuck interaction |
US11518645B2 (en) | 2021-03-15 | 2022-12-06 | Sonoco Development, Inc. | Lightweight paper tube structure capable of high loading |
Also Published As
Publication number | Publication date |
---|---|
CA2589262A1 (en) | 2006-06-15 |
EP1819621A1 (en) | 2007-08-22 |
AU2005314293A1 (en) | 2006-06-15 |
CN101072722A (en) | 2007-11-14 |
KR20070086368A (en) | 2007-08-27 |
MX2007006697A (en) | 2007-08-14 |
WO2006062852A1 (en) | 2006-06-15 |
BRPI0518435A2 (en) | 2008-11-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SONOCO DEVELOPMENT, INC., SOUTH CAROLINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VAN DE CAMP, WIM;REEL/FRAME:016058/0110 Effective date: 20041114 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |