US20090218435A1 - Web-Winding Core - Google Patents
Web-Winding Core Download PDFInfo
- Publication number
- US20090218435A1 US20090218435A1 US11/997,894 US99789406A US2009218435A1 US 20090218435 A1 US20090218435 A1 US 20090218435A1 US 99789406 A US99789406 A US 99789406A US 2009218435 A1 US2009218435 A1 US 2009218435A1
- Authority
- US
- United States
- Prior art keywords
- web
- winding core
- core according
- core
- fibres
- 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
Links
Images
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
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
-
- 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
- B65H2701/00—Handled material; Storage means
- B65H2701/50—Storage means for webs, tapes, or filamentary material
- B65H2701/51—Cores or reels characterised by the material
- B65H2701/512—Cores or reels characterised by the material moulded
- B65H2701/5122—Plastics
Definitions
- This invention relates to a web-winding core.
- the web is wound on to the core at constant linear speed.
- the maximum rotational speed of the core is therefore seen at the start of the process when the core is bare.
- the rotational speed is reduced proportionally to the increased circumference of the roll, so that constant web velocity is maintained.
- WO-A-02/00539 discloses a reel shaft upon which a paper web can be rolled made of a composite material.
- a reel shaft effectively replaces a conventional core that has an inner support.
- Such cores have a relatively large outer diameter, and this is reflected in the diameter of the shaft disclosed in WO-A-02/00539, which is in the range 310-800 mm. At these large diameters, the shaft can easily be made with sufficient inherent stiffness that whirling can be avoided at the maximum operating speed.
- An aim of this invention is to provide an improved web-winding core that can replace conventional cardboard cores with a durable, lightweight and re-usable alternative.
- the invention provides a web-winding core comprising a tubular wall and longitudinal ribs extending radially inward from said wall, the core being formed from a fibre reinforced polymeric composite material.
- the longitudinal ribs add substantial stiffness in the particular direction that adds to the whirling resistance of the core yet with minimal additional weight, so increasing its critical whirling speed.
- the ribs extend the length of the core. Their cross-section may be substantially constant throughout the length of the core. A rectangular profile has been found to be particularly effective. This may be modified by providing a radiused region where the ribs extend from the wall to reduce the possible occurrence of stress risers.
- reinforced composite material is anisotropic, unlike metals such as steel and aluminium which are isotropic (the properties of the metal are not directionally dependent), a more economic structure can be produced giving the required strengths in specific directions by design orientation of the reinforcing fibres.
- tire fibres may be disposed so as to influence the stiffness properties of the core and increase its load bearing capability and whirling performance.
- the core may include reinforcing fibres disposed substantially parallel to the longitudinal axis of the core. At least some of these fibres may he disposed within the longitudinal ribs.
- the core may include reinforcing fibres disposed substantially perpendicular to the longitudinal axis of the core.
- the core may include reinforcing fibres disposed at at least one angle other than 90° to the longitudinal axis of the core.
- An outer layer of the tubular wall may comprise more fibres than an inner layer thereof.
- the fibres may comprise glass, carbon, aromatic polyamide such as Aramid, other polymeric, natural (of vegetable origin) and/or metallic fibres.
- the tubular wall may comprise layers including respective different types of fibre.
- the core may include a radio frequency identification device (RFID).
- RFID radio frequency identification device
- the composite core possesses a high degree of transparency to radio frequency (RF) radiation. Since tracking and data logging may be used to locate and monitor the cores whilst in service, the RF transparency of the composite improves the signal reception.
- the RFID device may be attached to the inner wall of the core or at least one of the longitudinal ribs or to an insert.
- the core may further include end adaptors fitted to facilitate engagement of a drive system.
- the insert may include a head portion and a tail portion, the tail portion being disposed coaxially with the core body.
- the tail portion typically has an outer diameter that is substantially the same as the inner diameter of the core body to form a smooth outer surface therewith.
- the tail portion may have a plurality of axial grooves. In such embodiments, typically the diameter of the tail portion and the size and position of the grooves are such that the tail portion is a close sliding fit within the core body, with each rib entering a corresponding groove.
- the tail portion of the insert may advantageously include re-enforcing material to resist transmission of radial forces from a chuck to tire core body.
- the invention is particularly advantageous when applied to the construction of cores having an outer diameter of less than 300 mm. It will find particular application in the construction of cores having an outer diameter in the range of 80 mm to 250 mm.
- the low inherent beam stiffness (absent the provisions of the present invention) and the high rotational speeds encountered by cores having diameters in this range make them particularly susceptible to whirling failure.
- FIG. 1 shows a transverse cross section through a core according to the invention
- FIG. 2 is a cut-away perspective view of the core of FIG. 1 ;
- FIG. 3 is a perspective view of an insert being a component of the embodiment of FIG. 1 ;
- FIG. 4 is an end view of the insert of FIG. 3 ;
- FIG. 5 is cross-sectional view of the insert of FIGS. 3 and 4 in place in the core of FIGS. 1 and 2 .
- the core shown in the drawings comprises a rigid hollow web-winding core formed from a fibre reinforced polymeric composite material.
- the fibres may comprise glass, carbon, aromatic polyamide such as Aramid, other polymeric, natural (of vegetable origin) and/or metallic fibres.
- the core comprises a core body being formed from a cylindrical wall 1 and a plurality of longitudinal ribs 2 extending radially inwardly from the inside of fire wall 1 .
- a core body being formed from a cylindrical wall 1 and a plurality of longitudinal ribs 2 extending radially inwardly from the inside of fire wall 1 .
- the core of the embodiment is formed by a known production method.
- the fibres can be individual fibres or fibres formed into a fabric either before or during the manufacture of the core.
- the core of the invention performs better than a core of isotropic material.
- the key criteria affecting whirling are: (i) rigidity of the core end fixing imparted by the core chucks, (ii) core length; (iii) elastic modulus in the axial direction; (iv) core mass; (v) moment of inertia; (vi) initial straightness; (vii) external load and (viii) rotational speed.
- the loading conditions and the required rotational speeds are fixed, so that the only criteria under the control of the designer are numbers (iii) (iv) and (v) above.
- the mass of the core can be altered by changing the density of the material, and the moment of inertia can be altered by changing the cross-sectional geometry of tire core.
- the modulus of elasticity is enhanced by selective orientation of the reinforcing fibres.
- Hybrid fibre laminates including more than one type of fibre are beneficial to performance.
- the fibres are located and orientated in the most structurally effective areas of the core, on the outer skin and in the ribs 2 . This control cannot be exercised when an isotropic material is used for the core.
- composite laminates of controlled density can be produced.
- the density range of the materials used in the invention is typically between 1300 and 1900 kgm ⁇ 3 .
- aluminium has a density of about 2700 kgm ⁇ 3 and steel has a density of about 8800 kgm ⁇ 3 .
- the reduced weight of the core according to the invention not only improves whirling performance, but also has a safety advantage in the manual handling of the core.
- the moment of inertia of the core can be controlled and optimised to give maximum resistance to bending with the lowest weight of material.
- localised variations in the core wall thickness, (for example, the ribs) can be controlled.
- localised variations in the density of tire wall 1 can be controlled by incorporating sandwich structures.
- the core of the invention is much more resistant to impact damage, denting and permanent deformation than most non-reinforced plastics or aluminium cores.
- the core of the invention has a better cut resistance and does not develop these sharp-edged score lines on its surface, thus improving operator safety in handling.
- the core of composite material has no realisable value as scrap, unlike the aluminium core, so that pilferage of the tubes is no longer an issue.
- the core includes a radio frequency identification tag.
- the composite core possesses a high degree of transparency to radio frequency (RF) radiation. Since RF tracking and data logging may be used to locate and monitor the cores whilst in service, the RF transparency of the composite improves the signal transmission to at a RF transponder in the vicinity of the core, and eliminates the need for a special antenna which has to be used with metallic cores.
- RF radio frequency
- the core of the invention is optionally provided with engaging means at its ends for engaging driving machinery, which rotates the core about its axis at high speed.
- engaging means is an end adapter in the form of a pair of inserts 12 , one of these being shown in FIG. 3 .
- the inserts 12 are disposed at opposite ends of the core body 1 .
- the insert 12 is formed as a rotationally symmetrical body.
- the body is formed of self-healing polymeric material.
- the insert has a head portion 16 and a tail portion 18 disposed coaxially with the core body 1 .
- the head portion 16 has a cylindrical outer surface that is substantially the same diameter as the outer surface of the core body 1 .
- the tail portion 18 has an outer diameter that is substantially the same as the inner diameter of the core body 1 , and has a plurality of axial grooves 20 .
- the diameter of the tail portion 18 and the size and position of the grooves 20 are such that the tail portion 18 is a close sliding fit within the core body 1 , with each rib 2 entering a corresponding groove 20 .
- Additional grooves are provided in some embodiments to accommodate other items, such as RFID antennas or other items.
- the core body 10 and insert 12 are constrained to rotate together, torque being passed between the ribs and grooves.
- a fastener or fasteners may be passed radially through the core body 1 to enter the material of the insert 12 to secure the insert axially in place.
- the insert 12 may he secured by adhesive.
- the head portion 16 being of substantially the same diameter as the core body 1 , has an outer surface that forms a substantially continuous surface with the outer surface of the core body 1 , as can be seen in FIG. 5 . This ensures compatibility of the core with existing apparatus that is intended for use with a conventional core of continuous diameter. Since the head portion 16 abuts an end surface of the core body 10 , it serves to protect that end surface.
- the end surface of the core as a whole is formed by an end surface 22 of the head portion 16 , which can be moulded or machined to a suitable shape and finish.
- Optional re-enforcement may be provided within the insert to resist transmission of radial forces from a chuck to the core body 1 .
- One manner in which the required reinforcement in the insert can be achieved is through introduction of local reinforcement into an insert formed primarily from soft polymeric material that is suitable to be gripped by the chuck.
- a sleeve 30 of high-modulus material is introduced into the insert during manufacture.
- the sleeve is coaxial with the bore of the insert 12 .
- the bore can be formed to have substantially the same diameter as that of a conventional core, and the jaws of the chuck can penetrate into the material to provide the required grip.
- Material radially inwardly of the sleeve can be deflected by the chuck as required to achieve adequate Motional coupling between the sleeve 12 and the chuck.
- the sleeve 30 substantially prevents deflection of material radially outwardly of the sleeve 30 , so that radial loads are substantially prevented from being transmitted to the core 10 .
- the sleeve 30 can be formed in a variety of ways. For example, it may be a simple metal tube moulded into the insert 12 . This is a low-cost approach, but can, under conditions, cause weakness within the moulding of the insert 12 . This disadvantage can be mitigated by use of a perforated sleeve 30 , which allows the material of the insert 12 to flow through the perforations during moulding so promoting the integrity of the moulding as a whole. Likewise, this could be achieved by use of several coaxial, axially-spaced rings.
- the reinforcement may be formed from many high modulus materials, such as reinforcement using inorganic, organic or metallic fibres or high-modulus polymers. The reinforcement could be either integrally inserted within the insert profile during manufacture or subsequently fitted externally to the insert 12 , for example, as a baud surrounding it.
- the insert can be formed by one or more of machining and moulding, including co-moulding or two-shot moulding, as required.
- Aramid is a registered trade mark of E.I. du Pont de Nemours and Company.
Abstract
A web-winding core (1) is disclosed. The core comprises a tabular wall and longitudinal ribs (2) extending radially inward from the wall. It is formed from a fibre reinforced polymeric composite material. The polymeric material is typically anisotropic and has the required strengths in specific directions by design orientation of the reinforcing fibres. It may have reinforcing fibres disposed substantially parallel to the longitudinal axis of the core, fibres disposed within the longitudinal ribs, fibres substantially perpendicular to the longitudinal axis of the core and/or fibres disposed at least one angle other than 90° to the longitudinal axis of the core. The reinforcing fibres may include one or more of glass, carbon, aromatic polyamide such as Aramid, other polymeric, natural (of vegetable origin) and/or metallic fibres.
Description
- This invention relates to a web-winding core.
- In the conventional manufacture of a product such as paper in the form of a web, the web is mechanically wound onto a rotating core member. There exists a requirement for a stiff, lightweight core member. New machinery, which runs at higher speeds with heavier loadings and increased spans, is being introduced in the paper manufacturing industry and most of the present materials used for web-winding cores are unsuited to the increased duty cycle.
- The web is wound on to the core at constant linear speed. The maximum rotational speed of the core is therefore seen at the start of the process when the core is bare. When layers of the web have been wound on, the rotational speed is reduced proportionally to the increased circumference of the roll, so that constant web velocity is maintained.
- Premature failure of high-speed rotating shafts frequently arises—often under low-stress conditions—as a result of “whirling” of the shaft which induces buckling. All rotating shafts are subject to a critical whirling frequency that may be influenced by the design of the shaft.
- WO-A-02/00539 discloses a reel shaft upon which a paper web can be rolled made of a composite material. A reel shaft effectively replaces a conventional core that has an inner support. Such cores have a relatively large outer diameter, and this is reflected in the diameter of the shaft disclosed in WO-A-02/00539, which is in the range 310-800 mm. At these large diameters, the shaft can easily be made with sufficient inherent stiffness that whirling can be avoided at the maximum operating speed.
- It is also known to make cores out of aluminium, and an example is disclosed in FR-A-2848272. The stiffness of aluminium minimises the problem of whirling. However, aluminium is heavier than composite materials, and is prone to damage by impact or during cutting the remnants of fee web from the core using a knife.
- An aim of this invention is to provide an improved web-winding core that can replace conventional cardboard cores with a durable, lightweight and re-usable alternative.
- The invention provides a web-winding core comprising a tubular wall and longitudinal ribs extending radially inward from said wall, the core being formed from a fibre reinforced polymeric composite material.
- The longitudinal ribs add substantial stiffness in the particular direction that adds to the whirling resistance of the core yet with minimal additional weight, so increasing its critical whirling speed.
- Most preferably, the ribs extend the length of the core. Their cross-section may be substantially constant throughout the length of the core. A rectangular profile has been found to be particularly effective. This may be modified by providing a radiused region where the ribs extend from the wall to reduce the possible occurrence of stress risers.
- Because reinforced composite material is anisotropic, unlike metals such as steel and aluminium which are isotropic (the properties of the metal are not directionally dependent), a more economic structure can be produced giving the required strengths in specific directions by design orientation of the reinforcing fibres.
- Thus, tire fibres may be disposed so as to influence the stiffness properties of the core and increase its load bearing capability and whirling performance. In particular, the core may include reinforcing fibres disposed substantially parallel to the longitudinal axis of the core. At least some of these fibres may he disposed within the longitudinal ribs.
- The core may include reinforcing fibres disposed substantially perpendicular to the longitudinal axis of the core.
- Finally, the core may include reinforcing fibres disposed at at least one angle other than 90° to the longitudinal axis of the core.
- An outer layer of the tubular wall may comprise more fibres than an inner layer thereof.
- The fibres may comprise glass, carbon, aromatic polyamide such as Aramid, other polymeric, natural (of vegetable origin) and/or metallic fibres. The tubular wall may comprise layers including respective different types of fibre.
- The core may include a radio frequency identification device (RFID). Compared to steel and aluminium cores, the composite core possesses a high degree of transparency to radio frequency (RF) radiation. Since tracking and data logging may be used to locate and monitor the cores whilst in service, the RF transparency of the composite improves the signal reception.
- The RFID device may be attached to the inner wall of the core or at least one of the longitudinal ribs or to an insert.
- The core may further include end adaptors fitted to facilitate engagement of a drive system. The insert may include a head portion and a tail portion, the tail portion being disposed coaxially with the core body. The tail portion typically has an outer diameter that is substantially the same as the inner diameter of the core body to form a smooth outer surface therewith. The tail portion may have a plurality of axial grooves. In such embodiments, typically the diameter of the tail portion and the size and position of the grooves are such that the tail portion is a close sliding fit within the core body, with each rib entering a corresponding groove.
- The tail portion of the insert may advantageously include re-enforcing material to resist transmission of radial forces from a chuck to tire core body.
- The invention is particularly advantageous when applied to the construction of cores having an outer diameter of less than 300 mm. It will find particular application in the construction of cores having an outer diameter in the range of 80 mm to 250 mm. The low inherent beam stiffness (absent the provisions of the present invention) and the high rotational speeds encountered by cores having diameters in this range make them particularly susceptible to whirling failure.
- Particular embodiments of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:
-
FIG. 1 shows a transverse cross section through a core according to the invention; -
FIG. 2 is a cut-away perspective view of the core ofFIG. 1 ; -
FIG. 3 is a perspective view of an insert being a component of the embodiment ofFIG. 1 ; -
FIG. 4 is an end view of the insert ofFIG. 3 ; and -
FIG. 5 is cross-sectional view of the insert ofFIGS. 3 and 4 in place in the core ofFIGS. 1 and 2 . - The core shown in the drawings comprises a rigid hollow web-winding core formed from a fibre reinforced polymeric composite material. The fibres may comprise glass, carbon, aromatic polyamide such as Aramid, other polymeric, natural (of vegetable origin) and/or metallic fibres.
- The core comprises a core body being formed from a cylindrical wall 1 and a plurality of
longitudinal ribs 2 extending radially inwardly from the inside of fire wall 1. In this example there are eightribs 2. - The core of the embodiment is formed by a known production method. The fibres can be individual fibres or fibres formed into a fabric either before or during the manufacture of the core.
- In its specific application as a high speed rotating tubular core, the core of the invention performs better than a core of isotropic material.
- The key criteria affecting whirling are: (i) rigidity of the core end fixing imparted by the core chucks, (ii) core length; (iii) elastic modulus in the axial direction; (iv) core mass; (v) moment of inertia; (vi) initial straightness; (vii) external load and (viii) rotational speed.
- In any given situation the geometry of the installation, the loading conditions and the required rotational speeds are fixed, so that the only criteria under the control of the designer are numbers (iii) (iv) and (v) above. The mass of the core can be altered by changing the density of the material, and the moment of inertia can be altered by changing the cross-sectional geometry of tire core.
- In the invention, the modulus of elasticity is enhanced by selective orientation of the reinforcing fibres. Hybrid fibre laminates including more than one type of fibre are beneficial to performance. The fibres are located and orientated in the most structurally effective areas of the core, on the outer skin and in the
ribs 2. This control cannot be exercised when an isotropic material is used for the core. - By careful selection of polymer matrix and reinforcing fibres, composite laminates of controlled density can be produced. The density range of the materials used in the invention is typically between 1300 and 1900 kgm−3. By contrast, aluminium has a density of about 2700 kgm−3 and steel has a density of about 8800 kgm−3. The reduced weight of the core according to the invention not only improves whirling performance, but also has a safety advantage in the manual handling of the core.
- The moment of inertia of the core can be controlled and optimised to give maximum resistance to bending with the lowest weight of material. In particular, localised variations in the core wall thickness, (for example, the ribs) can be controlled. Additionally, localised variations in the density of tire wall 1 can be controlled by incorporating sandwich structures.
- The core of the invention is much more resistant to impact damage, denting and permanent deformation than most non-reinforced plastics or aluminium cores.
- At the end of the unwinding process, when the web material may be cut off the core with a knife. On an aluminium surface the edges of the resulting knife scores may became razor-sharp and cause danger to the operatives is handling these cores. The core of the invention has a better cut resistance and does not develop these sharp-edged score lines on its surface, thus improving operator safety in handling.
- The core of composite material has no realisable value as scrap, unlike the aluminium core, so that pilferage of the tubes is no longer an issue.
- In a particular embodiment, the core includes a radio frequency identification tag. Compared to steel and aluminium cores, the composite core possesses a high degree of transparency to radio frequency (RF) radiation. Since RF tracking and data logging may be used to locate and monitor the cores whilst in service, the RF transparency of the composite improves the signal transmission to at a RF transponder in the vicinity of the core, and eliminates the need for a special antenna which has to be used with metallic cores.
- The core of the invention is optionally provided with engaging means at its ends for engaging driving machinery, which rotates the core about its axis at high speed. One such engagement means is an end adapter in the form of a pair of
inserts 12, one of these being shown inFIG. 3 . - The
inserts 12 are disposed at opposite ends of the core body 1. Theinsert 12 is formed as a rotationally symmetrical body. In this embodiment, the body is formed of self-healing polymeric material. The insert has ahead portion 16 and atail portion 18 disposed coaxially with the core body 1. Thehead portion 16 has a cylindrical outer surface that is substantially the same diameter as the outer surface of the core body 1. Thetail portion 18 has an outer diameter that is substantially the same as the inner diameter of the core body 1, and has a plurality ofaxial grooves 20. The diameter of thetail portion 18 and the size and position of thegrooves 20 are such that thetail portion 18 is a close sliding fit within the core body 1, with eachrib 2 entering a correspondinggroove 20. Additional grooves are provided in some embodiments to accommodate other items, such as RFID antennas or other items. Thus, the core body 10 and insert 12 are constrained to rotate together, torque being passed between the ribs and grooves. A fastener or fasteners (not shown) may be passed radially through the core body 1 to enter the material of theinsert 12 to secure the insert axially in place. Alternatively or additionally, theinsert 12 may he secured by adhesive. - The
head portion 16, being of substantially the same diameter as the core body 1, has an outer surface that forms a substantially continuous surface with the outer surface of the core body 1, as can be seen inFIG. 5 . This ensures compatibility of the core with existing apparatus that is intended for use with a conventional core of continuous diameter. Since thehead portion 16 abuts an end surface of the core body 10, it serves to protect that end surface. The end surface of the core as a whole is formed by anend surface 22 of thehead portion 16, which can be moulded or machined to a suitable shape and finish. - Optional re-enforcement may be provided within the insert to resist transmission of radial forces from a chuck to the core body 1. One manner in which the required reinforcement in the insert can be achieved is through introduction of local reinforcement into an insert formed primarily from soft polymeric material that is suitable to be gripped by the chuck. For example, as shown in
FIGS. 4 and 5 , asleeve 30 of high-modulus material is introduced into the insert during manufacture. The sleeve is coaxial with the bore of theinsert 12. The bore can be formed to have substantially the same diameter as that of a conventional core, and the jaws of the chuck can penetrate into the material to provide the required grip. Material radially inwardly of the sleeve can be deflected by the chuck as required to achieve adequate Motional coupling between thesleeve 12 and the chuck. However, thesleeve 30 substantially prevents deflection of material radially outwardly of thesleeve 30, so that radial loads are substantially prevented from being transmitted to the core 10. - The
sleeve 30 can be formed in a variety of ways. For example, it may be a simple metal tube moulded into theinsert 12. This is a low-cost approach, but can, under conditions, cause weakness within the moulding of theinsert 12. This disadvantage can be mitigated by use of aperforated sleeve 30, which allows the material of theinsert 12 to flow through the perforations during moulding so promoting the integrity of the moulding as a whole. Likewise, this could be achieved by use of several coaxial, axially-spaced rings. Alternatively, the reinforcement may be formed from many high modulus materials, such as reinforcement using inorganic, organic or metallic fibres or high-modulus polymers. The reinforcement could be either integrally inserted within the insert profile during manufacture or subsequently fitted externally to theinsert 12, for example, as a baud surrounding it. - The insert can be formed by one or more of machining and moulding, including co-moulding or two-shot moulding, as required.
- All forms of the verb “to comprise” in this specification and the appended claims should be understood as forms of the verbs “to consist of” and/or “to include”.
- Aramid is a registered trade mark of E.I. du Pont de Nemours and Company.
Claims (24)
1. A web-winding core comprising a tubular wall and longitudinal ribs extending radially inward from said wall, the core being formed from a fibre reinforced polymeric composite material.
2. A web-winding core according to claim 1 in which the core has the required strengths in specific directions by design orientation of the reinforcing fibres.
3. A web-winding core according to claim 1 or claim 2 including reinforcing fibres disposed substantially parallel to the longitudinal axis of the core.
4. A web-winding core according to claim 3 in which at least some of these fibres are disposed within the longitudinal ribs.
5. A web-winding core according to any preceding claim including reinforcing fibres disposed substantially perpendicular to the longitudinal axis of the core.
6. A web-winding core according to any preceding claim including reinforcing fibres disposed at at least one angle other than 90° to the longitudinal axis of the core.
7. A web-winding core according to any preceding claim having an outer layer of the tubular wall that comprises more fibres than an inner layer thereof.
8. A web-winding core according to any preceding claim in which comprising fibres that include one or more of glass, carbon, aromatic polyamide such as Aramid, other polymeric, natural (of vegetable origin) and/or metallic fibres.
9. A web-winding core according to claim 8 in which the tubular wall comprises layers including respective different types of fibre.
10. A web-winding core according to any preceding claim in which the ribs extend the length of the core.
11. A web-winding core according to claim 10 in which the cross-section of the ribs are substantially constant throughout the length of the core.
12. A web-winding core according to claim 10 or claim 11 in which the ribs have a rectangular profile.
13. A web-winding core according to any one of claims 10 to 12 in which there is a radiused region where the ribs extend from the wall.
14. A web-winding core according to any preceding claim that includes a radiofrequency identification device (RFID).
15. A web-winding core according to claim 14 in which the RFID device is attached to the inner wall of the core or at least one of the longitudinal ribs or to the insert.
16. A web-winding core according to any preceding claim that further comprises end adaptors to facilitate engagement of a drive system.
17. A web-winding core according to claim 16 in which the insert has a head portion and a tail portion, the tail portion being disposed coaxially with the core body.
18. A web-winding core according to claim 17 in which the tail portion of the insert has an outer diameter that is substantially the same as the inner diameter of the core body.
19. A web-winding core according to claim 18 in which the tail portion of the insert has a plurality of axial grooves.
20. A web-winding core according to claim 19 in which the diameter of the tail portion and the size and position of the grooves of the insert are such that the tail portion is a close sliding fit within the core body, with each rib entering a corresponding groove.
21. A web-winding core according to any one of claims 17 to 20 in which the head portion of the insert is of substantially the same diameter as the core body and has an outer surface that forms a substantially continuous surface with the outer surface of the core body.
22. A web-winding core according to any one of claims 17 to 21 in which the tail portion of the insert includes re-enforcing material to resist transmission of radial forces from a chuck to the core body.
23. A web-winding core according to any preceding claim having an outer diameter of less than 300 mm.
24. A web-winding core according to claim 23 having an outer diameter in the range of 80 mm to 250 mm.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0516073A GB2428665A (en) | 2005-08-04 | 2005-08-04 | Fibre-reinforced polymeric winding core |
GB0516073.4 | 2005-08-04 | ||
PCT/GB2006/002885 WO2007015092A1 (en) | 2005-08-04 | 2006-08-03 | Web-winding core |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090218435A1 true US20090218435A1 (en) | 2009-09-03 |
Family
ID=34984106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/997,894 Abandoned US20090218435A1 (en) | 2005-08-04 | 2006-08-03 | Web-Winding Core |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090218435A1 (en) |
EP (1) | EP1928775A1 (en) |
AU (1) | AU2006274670A1 (en) |
BR (1) | BRPI0615992A2 (en) |
CA (1) | CA2632002A1 (en) |
GB (1) | GB2428665A (en) |
WO (1) | WO2007015092A1 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103213880A (en) * | 2012-01-19 | 2013-07-24 | 村角株式会社 | Winding core |
US20140084102A1 (en) * | 2012-09-21 | 2014-03-27 | Michael E. Techlin | Method and apparatus for producing coreless rolls of paper |
JP2015064557A (en) * | 2013-08-28 | 2015-04-09 | 日本合成化学工業株式会社 | Polyvinyl alcohol film roll, polarizing film using the same, and method for manufacturing polyvinyl alcohol film roll |
US9505179B2 (en) | 2013-02-21 | 2016-11-29 | The Procter & Gamble Company | Method of manufacturing fibrous cores |
US9561929B2 (en) | 2013-02-21 | 2017-02-07 | The Procter & Gamble Company | Fibrous cores |
US9751721B1 (en) | 2016-08-18 | 2017-09-05 | Sonoco Development, Inc. | Core for winding elastomeric yarns |
US9756991B2 (en) | 2013-02-21 | 2017-09-12 | The Procter & Gamble Company | Fibrous cores |
CN109132710A (en) * | 2018-09-06 | 2019-01-04 | 澳洋集团有限公司 | A kind of textile yarn winding mechanism |
CN109502426A (en) * | 2018-11-23 | 2019-03-22 | 江苏恒神股份有限公司 | A kind of high rigidity carbon fibre composite roller |
US10240708B2 (en) * | 2017-02-09 | 2019-03-26 | Milliken & Company | System for applying a web around a cylindrical object with even tension |
US20200247634A1 (en) * | 2017-10-06 | 2020-08-06 | Italia Technology Alliance S.R.L. | Method and plant for producing logs of thin products |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0716635D0 (en) * | 2007-08-24 | 2007-10-03 | Rftraq Ltd | A holder for holding a radio frequency identification tag in a reusable core for wound sheet material |
JP5274082B2 (en) * | 2008-04-08 | 2013-08-28 | 天龍コンポジット株式会社 | Fiber reinforced resin core |
JP2013006704A (en) * | 2012-09-03 | 2013-01-10 | Tenryu Composite Co Ltd | Method for mounting contactless ic tag to fiber-reinforced resin core |
JP2012232853A (en) * | 2012-09-03 | 2012-11-29 | Tenryu Composite Co Ltd | Fiber reinforced resin-made core |
EP2918535A1 (en) * | 2014-03-10 | 2015-09-16 | Starlinger&CO Gesellschaft M.b.H. | Coil body |
CN111867953A (en) * | 2019-02-04 | 2020-10-30 | 洛希亚有限公司 | Composite rigid pipe for winding yarn |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2336161A (en) * | 1941-11-25 | 1943-12-07 | Sonoco Products Co | Core cap |
US2585999A (en) * | 1949-06-08 | 1952-02-19 | Western Electric Co | Strand handling apparatus |
US3447674A (en) * | 1967-07-14 | 1969-06-03 | William T Fraser | Winding core |
US3627220A (en) * | 1970-02-09 | 1971-12-14 | Poly Guard Inc | Protective end cap construction |
US4989802A (en) * | 1987-11-06 | 1991-02-05 | Fuji Photo Film Co., Ltd. | Core for web material |
US5252369A (en) * | 1987-11-06 | 1993-10-12 | Fuji Photo Film Co., Ltd. | Core for web material |
US6305638B1 (en) * | 1999-10-20 | 2001-10-23 | Sandar Industries, Inc. | Self-locking core and shaft assembly |
US6997411B2 (en) * | 2003-05-29 | 2006-02-14 | Kewin Daniel D | Tubular core assemblies for rolls of paper or other sheet material |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2151439A5 (en) * | 1971-07-06 | 1973-04-20 | Ugine Kuhlmann | |
FR2147473A5 (en) * | 1971-07-28 | 1973-03-09 | Posso Pierre | |
DE7714640U1 (en) * | 1977-05-09 | 1977-10-13 | Boeckmann & Thiel, 5600 Wuppertal | |
US4995698A (en) * | 1988-12-30 | 1991-02-26 | Hughes Aircraft Company | Fiber optic canister having orthotropic, controlled thermal expansion bobbin |
DE4211572A1 (en) * | 1991-04-10 | 1992-10-15 | Barmag Barmer Maschf | High speed spindle - has carbon@ fibre reinforced outer sealed with thermoplastic adhesive to hubs |
US6669818B2 (en) * | 2000-06-28 | 2003-12-30 | Metso Paper Karlstad Ab | Shortened layout from dryer to reel in tissue machine |
JP2002179339A (en) * | 2000-12-18 | 2002-06-26 | Ube Nitto Kasei Co Ltd | Winding core |
JP2002373316A (en) * | 2001-06-13 | 2002-12-26 | Toppan Printing Co Ltd | Core material attached with ic |
FR2848272B1 (en) * | 2002-12-09 | 2006-02-10 | Roll & Concept | WINDING CHUCK FOR WINDING PRODUCTS |
WO2004063073A1 (en) * | 2003-01-16 | 2004-07-29 | Michael James Bayliss | Method and manufacture of cores |
US20040232274A1 (en) * | 2003-05-22 | 2004-11-25 | Gardner William H. | Fiber reinforced hybrid composite winding core |
-
2005
- 2005-08-04 GB GB0516073A patent/GB2428665A/en not_active Withdrawn
-
2006
- 2006-08-03 BR BRPI0615992-3A patent/BRPI0615992A2/en not_active Application Discontinuation
- 2006-08-03 WO PCT/GB2006/002885 patent/WO2007015092A1/en active Application Filing
- 2006-08-03 EP EP06765196A patent/EP1928775A1/en not_active Withdrawn
- 2006-08-03 US US11/997,894 patent/US20090218435A1/en not_active Abandoned
- 2006-08-03 CA CA002632002A patent/CA2632002A1/en not_active Abandoned
- 2006-08-03 AU AU2006274670A patent/AU2006274670A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2336161A (en) * | 1941-11-25 | 1943-12-07 | Sonoco Products Co | Core cap |
US2585999A (en) * | 1949-06-08 | 1952-02-19 | Western Electric Co | Strand handling apparatus |
US3447674A (en) * | 1967-07-14 | 1969-06-03 | William T Fraser | Winding core |
US3627220A (en) * | 1970-02-09 | 1971-12-14 | Poly Guard Inc | Protective end cap construction |
US4989802A (en) * | 1987-11-06 | 1991-02-05 | Fuji Photo Film Co., Ltd. | Core for web material |
US5252369A (en) * | 1987-11-06 | 1993-10-12 | Fuji Photo Film Co., Ltd. | Core for web material |
US6305638B1 (en) * | 1999-10-20 | 2001-10-23 | Sandar Industries, Inc. | Self-locking core and shaft assembly |
US6997411B2 (en) * | 2003-05-29 | 2006-02-14 | Kewin Daniel D | Tubular core assemblies for rolls of paper or other sheet material |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103213880A (en) * | 2012-01-19 | 2013-07-24 | 村角株式会社 | Winding core |
JP2013147318A (en) * | 2012-01-19 | 2013-08-01 | Murazumi Kk | Winding core |
US20140084102A1 (en) * | 2012-09-21 | 2014-03-27 | Michael E. Techlin | Method and apparatus for producing coreless rolls of paper |
US11383947B2 (en) | 2012-09-21 | 2022-07-12 | Paper Converting Machine Company | Method and apparatus for producing coreless rolls of paper |
US9284147B2 (en) * | 2012-09-21 | 2016-03-15 | Paper Converting Machine Company | Method and apparatus for producing coreless rolls of paper |
US10676304B2 (en) | 2012-09-21 | 2020-06-09 | Paper Converting Machine Company | Method and apparatus for producing coreless rolls of paper |
US9975720B2 (en) | 2012-09-21 | 2018-05-22 | Paper Converting Machine Company | Method for producing coreless rolls of paper |
US9919888B2 (en) | 2012-09-21 | 2018-03-20 | Paper Converting Machine Company | Method for producing coreless rolls of paper |
US9756991B2 (en) | 2013-02-21 | 2017-09-12 | The Procter & Gamble Company | Fibrous cores |
US9561929B2 (en) | 2013-02-21 | 2017-02-07 | The Procter & Gamble Company | Fibrous cores |
US9505179B2 (en) | 2013-02-21 | 2016-11-29 | The Procter & Gamble Company | Method of manufacturing fibrous cores |
JP2015064557A (en) * | 2013-08-28 | 2015-04-09 | 日本合成化学工業株式会社 | Polyvinyl alcohol film roll, polarizing film using the same, and method for manufacturing polyvinyl alcohol film roll |
US9751721B1 (en) | 2016-08-18 | 2017-09-05 | Sonoco Development, Inc. | Core for winding elastomeric yarns |
US10240708B2 (en) * | 2017-02-09 | 2019-03-26 | Milliken & Company | System for applying a web around a cylindrical object with even tension |
US20200247634A1 (en) * | 2017-10-06 | 2020-08-06 | Italia Technology Alliance S.R.L. | Method and plant for producing logs of thin products |
CN109132710A (en) * | 2018-09-06 | 2019-01-04 | 澳洋集团有限公司 | A kind of textile yarn winding mechanism |
CN109502426A (en) * | 2018-11-23 | 2019-03-22 | 江苏恒神股份有限公司 | A kind of high rigidity carbon fibre composite roller |
Also Published As
Publication number | Publication date |
---|---|
BRPI0615992A2 (en) | 2011-05-31 |
WO2007015092A1 (en) | 2007-02-08 |
GB2428665A (en) | 2007-02-07 |
EP1928775A1 (en) | 2008-06-11 |
CA2632002A1 (en) | 2007-02-08 |
GB0516073D0 (en) | 2005-09-14 |
AU2006274670A1 (en) | 2007-02-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090218435A1 (en) | Web-Winding Core | |
EP1802545B1 (en) | A core for a roll of material | |
US8720358B2 (en) | Rudder stock | |
US4838833A (en) | Fiber reinforced resin drive shaft having improved resistance to torsional buckling | |
EP3118472B1 (en) | A rotating shaft being composed of a plurality of longitudinal sectors | |
US4634399A (en) | Structural component for transmitting torque | |
JP6547080B1 (en) | Tube and power transmission shaft used for power transmission shaft | |
WO2020174701A1 (en) | Tubular body used for power transmission shaft and power transmission shaft | |
KR20070086368A (en) | High-stiffness winding core | |
US5915647A (en) | One-piece core plug | |
US20040232274A1 (en) | Fiber reinforced hybrid composite winding core | |
EP1027544B1 (en) | Method for producing a bending-resistant, elongated body and an arrangement for a bending-resistant, elongated body | |
EP1991486A1 (en) | Cores | |
US20040052986A1 (en) | Reinforced paperboard tube | |
EP4063673B1 (en) | Buckling resistant composite shaft and method of making a buckling resistant composite shaft | |
JP5112284B2 (en) | Fishing spool | |
EP4345325A1 (en) | Drive shaft with non-cylindrical shape and spaced reinforcements | |
JP4631428B2 (en) | FRP cylinder, shaft-like component using the same, and propeller shaft | |
JP7252541B2 (en) | machine tool spindle | |
JPH09266966A (en) | Golf club shaft | |
GB2321941A (en) | Connection element for tubes or bars of different diameter | |
JP2001061373A (en) | Production of fishing rod body | |
JP2006038128A (en) | Propeller shaft |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |