JP2004099331A - Tube-like core assembly for roll made of paper or other sheet material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tube-like core assembly whose components can be reused or recycled easily. <P>SOLUTION: This tube-like core assembly for roll includes a hollow cylindrical core member formed by multiple laps of paper board materials and an annular collar placed within end portions of the core member faced to each other. Each collar is composed of an anisotropy material having an outer annular surface attached to an inner annular surface of the core member. An annular end portion member made of a metal or plastic material has a sleeve portion placed within the collar at each end portion of the tube-like core assembly. The sleeve portion includes an outer annular surface attached to an inner ring-like surface of the collar and an inner annular surface formed to receive a roll support chuck. <P>COPYRIGHT: (C)2004,JPO

Description

The present invention relates to a tubular core assembly for a roll of paper or other sheet material.

U.S. Pat. No. 4,874,139, issued Oct. 17, 1989, discloses a hollow cylindrical core member and a hollow cylindrical core formed by multiple wraps of paperboard material. A tubular core assembly is described that includes an annular collar of compressed wood disposed at each opposing end of the member. An improvement of such a tubular core assembly is the subject of Canadian Patent No. 2,060,363, issued July 28, 1993. After use, the collar of the tubular core assembly is removed from the core member so that the core member can be recycled, for example, by crushing or repulping. The collar can also be separately crushed and repulped. These tubular core assemblies are described as disposable products having components that can be easily recycled. Such products are suitable for many applications.

However, in some cases, for example, where the tubular core assembly is subjected to relatively high stresses during use, at least some portion of each end of the tubular core assembly may include multiple layers of paperboard material or compressed wood. It may be advantageous to make it from a stronger material than wrap.

Each end described above has sufficient strength to withstand significantly instantaneous crushing impacts without the use of such plugs, since the support plugs would impair the roll forming system in automated large volume compression rooms. Is advantageous.

It has been known for many years to provide a tubular core assembly in which the core member has one or another type of metal end cap. However, the components of such prior art tubular core assemblies have difficulty separating the metal end cap from the core member without damage for reuse, and the core member has to re-pulp. It is relatively thick to perform and is not easily crushed, so it is not easily reused or recycled.

Accordingly, it is an object of the present invention to provide a tubular core assembly wherein at least a portion of each end is made of a relatively strong material and the components can be easily reused or recycled.

According to one aspect of the present invention, there is provided a tubular core assembly for a roll of paper or other sheet material. The tubular core assembly includes a hollow cylindrical core member formed by multiple wraps of paperboard material, and annular collars disposed within opposing ends of the core member, each collar being unequal. Metal having a rigid body made of an isotropic material, having an outer annular surface attached to an inner annular surface of the core member, and further having a sleeve portion disposed in a collar at each end of the tubular core assembly. Alternatively, an annular end member made of a plastic material is provided, wherein the sleeve portion has an outer annular surface attached to the inner annular surface of the collar and an inner annular surface formed to receive the roll support chuck. The term paperboard is intended to include paper.

The sleeve portion of each end member may have a pair of diametrically opposed radially projecting lugs at each end of the tubular core assembly, the core member and each collar providing torque and axial chuck. Each of the ends has a pair of diametrically opposed lug receiving notches for receiving lugs so that pressure can be easily transmitted from the end members to the core member.

The sleeve portion of each collar and end member has a recess extending inwardly from the respective end at each end of the tubular core assembly to provide a notch for receiving the protrusion of the roll support chuck. The projection receiving notch is disposed at a circumferentially intermediate position between the pair of lag notches.

After use, the metal or plastic annular end member, collar and core member can be easily separated without damaging the end member. The end members can thus be reused, and the collar and core members can be recycled.

The sleeve portion of each annular end member has an inner diameter ranging from about 3 to about 5 inches and a wall thickness of about 0.15 inches. Each collar can have an outer diameter in the range of about 3.5 to about 5.5 inches, and the core member can have an outer diameter in the range of about 101.6 to about 152.4 mm. (About 4 to about 6 inches). The sleeve portion of each annular member may have a length in the range of about 1.5 to about 5 inches (38.1 mm to about 127 mm), and each collar may have a length in the range of about 50.8 mm to about 152.4 mm (about 25.4 mm). To about 6 inches) and the core member can have a length in the range of about 2 to about 10 feet (60.96 cm to about 304.8 cm).

According to another aspect of the present invention, there is provided a tubular core assembly for a roll of paper or other sheet-like material. The tubular core assembly includes a hollow cylindrical core member formed by multiple wraps of paperboard material, and an outer member disposed within each opposing end of the core member and attached to an inner annular surface of the core member. An annular end member of a metal or plastic material having an annular surface and an inner annular surface configured to receive the roll support chuck.

Each end member has a pair of radially protruding lugs at diametrically opposed locations on each end of the tubular core assembly, and the core member provides torque and axial chuck pressure from the end members. Each end has a pair of lug receiving notches for receiving each lug of each end member for easy transmission to the core member. Each end member has a notch extending inward from each end of the tubular core assembly to receive a protrusion of the roll support chuck, the notch receiving the protrusion being circumferentially intermediate between a pair of lug notches. Placed in

After use, the end member can be easily separated from the core member without damage. The end members can thus be reused, and the core members can be recycled, for example, by crushing and repulping.

The ratio of the end member wall thickness to the core member wall thickness may range from about 1.3: 1 to about 1.5: 1.

Each end member has an inner diameter ranging from about 3 to about 5 inches (about 76.2 mm to about 127 mm) and a diameter ranging from about 3.5 to about 5.5 inches (about 88.9 mm to about 139.7 mm). And the core member can have an outer diameter ranging from about 4 to about 6 inches (101.6 mm to about 152.4 mm). Each end member can have a length in the range of about 1.5 to about 5 inches (38.11 mm to about 127 mm), and the core member can have a length of about 2 to about 304.8 cm (about 2 to about 304.8 cm). About 10 feet).

Each lug has a substantially rectangular cross section, and each lug receiving notch may have a corresponding rectangular cross section for each lug to interference fit.

According to yet another aspect of the present invention, there is provided a tubular core assembly for a roll of paper or other sheet-like material. The tubular core assembly includes a hollow cylindrical core member formed by multiple wraps of paperboard material, and an outer member disposed within each opposing end of the core member and attached to an inner annular surface of the core member. An annular end member of a metal or plastic material having an annular surface; and an inner annular surface of the end member, formed from an anisotropic material, disposed within the annular end member at each end of the tubular core assembly. An annular collar having an outer annular surface attached to the inner surface and an inner annular surface configured to receive the roll support chuck, wherein each end member has at least one radial direction at each end of the tubular core assembly. An outwardly projecting lug, the core member having at each end at least one lug receiving notch for receiving an outwardly projecting lug, each end member also having a respective end of the tubular core assembly. At least One of having a lug projecting radially inward, the collar according to the configuration having at least one lug receiving notch receiving a lug projecting inwardly at each end. The outwardly and inwardly projecting lugs readily transmit torque and axial chuck pressure from the collar to the core member.

The outwardly and inwardly projecting lugs can be adjacent to each other and on the same radius.

Each end member has a pair of outwardly projecting lugs at diametrically opposed positions, and has a pair of said inwardly projecting lugs at diametrically opposed positions, and The projecting lugs can be configured to be adjacent to and in the same radius as each one of the inwardly projecting lugs.

Each end member and each collar each have a recess extending inwardly from a respective end at each end of the tubular core assembly to provide a notch for receiving the protrusion of the roll support chuck. The notch can be configured to be located circumferentially intermediate between the pair of outwardly and inwardly projecting lugs.

Each collar has an inner diameter ranging from about 3 to about 5 inches (76.2 mm to about 127 mm), and each end member has an inner diameter from about 3.3 to about 5.5 inches (83.82 mm to about 134.62 mm). The core member has an inner diameter in the range of about 3 inches and a wall thickness of about 0.15 inches, and the core member has a wall thickness in the range of about 4 to about 6 inches. It can be configured to have an outer diameter.

Each collar has a length in the range of about 1.5 to about 5 inches (38.1 mm to about 127 mm) and each end member has a length in the range of about 38.1 mm to about 127 mm (about 1.5 to about 5 inches). Inches, and the core member can have a length in the range of about 2 to about 10 feet (60.96 cm to about 304.8 cm).

Referring to the drawings, FIGS. 1 and 2 show a hollow cylindrical core member 42, an annular collar 44 mounted in each opposing end of the core member 42, and a collar 44 mounted in each collar 44. A tubular core assembly according to a first embodiment of the present invention comprising a metallic annular end member 46 having a sleeve portion 48 is shown. The core member 42 is formed from spirally wound kraft paperboard strips (ie, plies) of about 90% wood fiber having a thickness of 0.3 mm (0.012 inches), which strips have a width of about It is 25.4 cm (about 10 inches) and is wound at a winding angle of about 20 °. The core member 42 can be configured according to the description in U.S. Pat. No. 3,194,275 issued on July 13, 1965 [Biggs, Jr., etc.]. This patent describes a spirally wound paper tube to be used as a core or carrier of a heavy sheet material such as carpet material, which tube is about 12 feet (365.76 cm). ) Usually has a length. In contrast, the core member 42 of the present invention is typically about 5 to 10 feet (152.4 to 304.8 cm) in length. Conventional core members for paper rolls typically have a thickness of about 0.035 inches, a width of about 4 to 5 inches, and a spiral winding angle of about 4 to 5 inches. Formed from 65 ° plies.

The above-described kraft paperboard used in the preferred embodiment of the present invention, when incorporated into the core member 42 formed in the above-described manner, is substantially parallel to the longitudinal direction of the core member 12 and contributes to maintaining dimensional stability. Have relatively long fibers.
Each collar 44 is formed from a non-isotropic material such as, for example, compressed wood, such as molded wood, and has an outer annular surface that slides over the end of the core member 12. ing. Each collar 44 is attached to a predetermined position by an appropriate glue so that the torque is accurately transmitted from the collar 44 to the core member 42.

ス リ ー ブ The sleeve portion 48 of each metal end member 46 has an outer annular surface that is slidably fitted to each collar 14, and has an outer annular surface that is attached to a predetermined position by an appropriate glue. Each end member 46 has a pair of lugs 50, 52 of rectangular cross-section that project radially outwardly at diametrically opposed positions from the end of the sleeve portion 48 at the end of the core member 42. ing. The lugs 50,52 are located in corresponding rectangular recesses 54,56 and 58,60 on the collar 44 and core member 42, respectively. The lugs 50, 52 readily transmit torque and axial chuck pressure from the end member 46 to the core member 42, and because they are diametrically opposed, the lugs 50, 52 A dynamic balance can be provided during rotation.

The sleeve portion 48 and each collar 44 of each metal end member 46 each have a notch 61, 62 of rectangular cross-section extending inwardly from the respective end at a circumferentially intermediate location between the lugs 50 and 52, The projection of the roll support chuck is received. The inner annular surface of the sleeve portion 48 of each metal end member 46 is formed in a shape capable of receiving a chuck.

The tubular core assembly described with respect to FIGS. 1-3 is useful as a paper roll core. In practice, a paper roll can weigh about 1 ton and be about 40 inches in diameter. When the paper is wound on or unwound from the core, the paper travels at a constant linear velocity, so as the diameter of the roll decreases, the speed is 160-1600 revolutions per minute.

After use, the metal end member 48 can be removed from the collar 44 without damage, and the collar 44 can be removed from the core member 12. The metal end member 48 can be reused, and the collar 44 and the core member 44 can be separately recycled by crushing or repulping.

The sleeve portion 48 of the metal end member 6 may have an inner diameter ranging from about 3 to about 5 inches and a wall thickness of about 0.15 inches. Each collar 44 has an outer diameter in the range of about 3.5 to about 5.5 inches, and the core member 42 has an outer diameter in the range of about 101.6 mm to about 152.4 mm ( Having an outer diameter in the range of about 4 to about 6 inches. The sleeve portion 48 of the metal end member 46 can have a length in the range of about 38.1 mm to about 127 mm (about 1.5 to about 5 inches), and each collar 44 has a length of about 50.8 mm to about 152 inches. The core member 42 has a length in the range of about 2 to about 10 feet, and the core member 42 has a length in the range of about 2 to about 10 feet.

In a particular example of this embodiment of the present invention, the sleeve portion 48 of the metal end member 48 has an inner diameter of 76.2 mm (3 inches), a wall thickness of 3.81 mm (0.15 inches), and 38.1 mm. (1.5 inches). Collar 44 has an outer diameter of 91.4 mm (3.6 inches) and a length of 50.8 mm (2 inches). The core member 42 has an outer diameter of 101.6 mm (4 inches) and a length of 135 cm (4.5 feet).

The metal end member 46 can be made of appropriate iron, for example, carbon C10 or carbon C20. Alternatively, end member 46 can be formed from a suitable plastic material, for example, injection molded grade 25% glass filled nylon type 6.

This embodiment not only allows the components of the above-described tubular core assembly to be easily reused or recycled, but also provides the advantage of the relatively thin-walled core member of the tubular core assembly to the strength of the metal end member. Can be combined with

Referring now to FIGS. 4-6, a tubular core assembly according to a second embodiment of the present invention is disposed within a hollow cylindrical core member 62 and opposing ends of the core member 62. And a thick annular end member 64 having a sleeve portion 66. The core member 62 is configured in the same manner as the core member 42 of the above embodiment.

ス リ ー ブ The sleeve portion 66 of each end member 64 has an outer annular surface that is slidably fitted to the end of the core member 62, and is attached to a predetermined position by an appropriate glue. Each end member 64 has a pair of lugs 68, 70 having a rectangular cross section that project radially outward from diametrically opposed positions from the end of the sleeve portion 66 at the end of the core member 62. The lugs 68, 70 are located in corresponding rectangular recesses 72, 74 of the core member 62. The lugs 60, 70 easily transmit torque and axial chuck pressure from the metal end member 66 to the core member 62, and because they are diametrically opposed, the tubular core assembly A dynamic balance can be provided during the rotation of the.

The sleeve portion 66 of each metal end member 64 has a notch 76 with a rectangular cross-section extending inwardly from the respective end at a circumferentially intermediate location between the lugs 68 and 70 to define the protrusion of the roll support chuck. I am going to receive it. The inner surface of the sleeve portion 66 is formed in a shape that can receive the chuck.

チ ュ ー ブ The tubular core assembly described above with respect to FIGS. 4 to 6 can be used in the same manner as the embodiments described above.

The ratio of the wall thickness of the end member to the wall thickness of the core member ranges from about 1.3: 1 to about 1.5: 1. The sleeve portion 66 of each end member 64 has an inner diameter ranging from about 3 to about 5 inches (about 76.2 mm to about 127 inches) and about 3.5 to about 5.5 inches (about 88.9 mm to about 139.7 mm). 5 inches). The core member 62 has a length in the range of about 2 to about 10 feet (60.98 cm to about 304.8 cm).

In a particular example of the invention, the ratio of the wall thickness of the end members to the thickness of the core member is 1.5: 1. The sleeve portion 66 of each end member 64 has an inner diameter of 76.2 mm (3 inches), an outer diameter of 91.4 mm (3.6 inches), and a length of 38.1 mm (1.5 inches). . Core member 62 has an outer diameter of 101.6 mm (4 inches) and a length of 135 cm (4.5 feet).

This embodiment not only allows the components of the above-described tubular core assembly to be easily reused or recycled, but also provides the advantage of the relatively thin-walled core member of the tubular core assembly to the strength of the metal end member. Which is sufficient to withstand significant instantaneous shocks without the need for end plug support. The end member 64 has the same thickness as the combined end member 46 and collar 44 of the embodiment described above.

同 様 Similar to the above-described embodiment, the metal end member 64 can be formed of appropriate iron. Alternatively, end member 64 can be formed from a suitable plastic material.

Referring now to FIGS. 7-9, a tubular core assembly according to a third embodiment of the present invention has a hollow cylindrical core member 82 mounted within opposing ends of the core member 82. A metal end member 84 having sleeve portions 86 to be provided, and a collar 88 mounted in each sleeve portion 86. The core member 84 is configured in the same manner as the core member of the above embodiment, and the collar 88 is configured in the same manner as the collar of the above embodiment. The sleeve portion 86 of each end member 84 has an outer annular surface that is slidably fitted to the end of the core member 82, and is attached to a predetermined position by an appropriate glue. Each collar 88 has an outer annular surface that is slidingly fitted to each sleeve portion 86, and is attached to a predetermined position by an appropriate glue.

The sleeve portion 86 of each end member 84 has a pair of lugs 90, 92 having a rectangular cross section that project radially outward at positions diametrically opposed from the end of the sleeve portion 86 at the end of the core member 82. are doing. The lugs 90, 92 are located in corresponding rectangular recesses 94, 96 of the core member 82. The sleeve portion 86 of each end member 84 also has a pair of lugs 98, 100 of rectangular cross-section projecting radially inward at diametrically opposed locations. Each outwardly projecting lug 90, 92 is located adjacent and on the same radius as the inwardly projecting lugs 98 or 100. The lugs 98, 100 are located in corresponding rectangular recesses 102, 104 of the collar 88. The lugs 90, 98 and 92, 100 easily transmit torque and axial chuck pressure from the collar 88 to the core member 82, and because they are diametrically opposed, the tubular core assembly A dynamic balance can be provided during body rotation.

Each collar 88 and sleeve portion 86 of each end member have a rectangular cross-section recess 106, 108 extending inwardly from the respective end at a circumferentially intermediate location between the lugs 90, 100 and 92, 102, respectively. And a notch for receiving the projection of the roll support chuck. The inner annular surface of collar 88 is formed to receive the chuck.

チ ュ ー ブ The tubular core assembly described above with respect to FIGS. 7 to 9 can be used in the same manner as the embodiments described above.

The collar 88 can have an inner diameter ranging from about 3 to about 5 inches (76.2 mm to about 127 inches), and each end member 84 can have an inner diameter ranging from about 3.3 to about 134.62 mm (about 3.3 to about 134.62 mm). The core member has an inner diameter of about 5.3 inches and a wall thickness of about 0.15 inches, and the core member ranges from about 4 to about 6 inches. Having an outer diameter of

The collar 88 can have a length ranging from about 1.5 to about 5 inches (38.1 mm to about 127 mm), and each end member 84 can have a length ranging from about 38.1 mm to about 127 mm (about 1.5 inches). And the core member 82 has a length in the range of about 2 to about 10 feet (60.96 cm to about 304.8 cm). In a particular example of this embodiment of the invention, the collar 88 has an inner diameter of 36.2 mm (3 inches) and a length of 38.1 mm (1.5 inches). Sleeve portion 86 of end member 84 has an inside diameter of 3.3 inches, a wall thickness of 0.15 inches, and a length of 1.5 inches. . The core member 82 has an outer diameter of 101.6 mm (4 inches) and a length of 135 cm (4.5 feet).

This embodiment not only allows the components of the above-described tubular core assembly to be easily reused or recycled, but also provides the advantage of the relatively thin-walled core member of the tubular core assembly to the strength of the metal end member. Can be combined with

同 様 Similar to the above-described embodiment, the metal end member 84 can be formed of appropriate iron. Alternatively, end member 84 can be formed from a suitable plastic material.

Although the invention has been described primarily with respect to its use on paper rolls, the invention is also useful for rolls of other sheet materials such as plastic films.

Embodiments of the present invention will be apparent to those skilled in the art, and the scope of the present invention is defined in the appended claims.

1 is an exploded perspective view of a tubular core assembly according to one embodiment of the present invention. FIG. 2 is a side sectional view of the tubular core assembly of FIG. 1 in an assembled state. FIG. 3 is an end view of the tubular core assembly of FIG. 2. FIG. 4 is an exploded perspective view of a tubular core assembly according to a second embodiment of the present invention. FIG. 5 is a side cross-sectional view of the tubular core assembly of FIG. 4 in an assembled state. FIG. 6 is an end view of the tubular core assembly of FIG. 5. FIG. 11 is an exploded perspective view of a tubular core assembly according to a third embodiment of the present invention. FIG. 8 is a side cross-sectional view of the tubular core assembly of FIG. 7. FIG. 8 is an end view of the tubular core assembly of FIG. 7.

Explanation of reference numerals

42 core member 44 annular collar 46 end member 48 sleeve 50 lug 52 lug 54 recess 56 recess 58 recess 60 recess 61 notch 62 core member 64 end member 66 sleeve 68 lug 70 lug 72 recess 74 recess 76 notch 82 core member 84 End member 86 Sleeve part 88 Collar 90 Lug 92 Lug 94 Recess 96 Recess 98 Recess 98 Lug 102 Recess 104 Recess 106 Recess 108 Recess

Claims (6)

A hollow cylindrical core member formed by multiple wraps of paperboard material,
A roll of paper or other sheet-like material having a metallic or plastic material annular end member disposed within each opposing end of the core member and having an outer annular surface attached to the inner annular surface of the core member. In a tubular core assembly for
An annular collar (88) is disposed at each end of the tubular core assembly within an annular end member (84), each collar (88) being formed from an anisotropic material, and an end member (84). Having an outer surface attached to the inner annular surface of the and an inner annular surface formed to receive the roll support chuck,
Each end member (84) has at least one radially outwardly projecting lug (90) at each end of the tubular core assembly, and the core member (81) outwardly projects at each end. At least one lug receiving notch (94) for receiving a mating lug (90), each end member (84) also having at least one radially inwardly projecting lug at each end of the tubular core assembly. Collar (88) having at least one lug receiving notch (102) at each end for receiving an inwardly projecting lug (98);
A tubular core assembly, wherein said outwardly and inwardly projecting lugs (90, 98) readily transmit torque and axial chuck pressure from a collar (88) to a core member (82). A tubular core assembly according to claim 1, wherein the outwardly and inwardly projecting lugs (90, 98) are adjacent to each other and located on the same radius. Each end member (84) has a pair of outwardly projecting lugs (90, 92) at diametrically opposed positions, and a pair of said inwardly projecting lugs (90) at diametrically opposed positions. 98, 100), each outwardly projecting lug (90, 92) being adjacent to and in the same radius as each one inwardly projecting lug (98, 100). The tubular core assembly according to claim 2, characterized in that: Each end member (84) and each collar (88) are respectively inward from each end at each end of the tubular core assembly to provide notches (108, 106) for receiving the projections of the roll support chuck. Recesses (108, 106) extending in the circumferential direction between the pair of outwardly and inwardly projecting lugs (90, 98 and 92, 100). 4. The tubular core assembly according to claim 3, wherein the tubular core assembly is disposed in the middle of the core. Each collar (88) has an inner diameter ranging from about 3 to about 5 inches (about 76.2 mm) to about 127 mm (about 3 to about 5 inches), and each end member (84) has a diameter between about 83.82 mm to about 134.62 mm (about 3. The core member (82) has an inner diameter in the range of 3 to about 5.3 inches and a wall thickness of about 0.015 inches (3.81 mm), and the core member (82) has a wall thickness of about 41.6 mm (about 41.4 inches). The tubular core assembly of any preceding claim, having an outer diameter in the range of about 1 to about 6 inches. Each collar (88) has a length in the range of about 1.5 to about 5 inches (38.1 mm to about 127 mm), and each end member (84) has a length in the range of about 38.1 mm to about 127 mm (about 1 inch). 0.5 to about 5 inches) and the core member (82) has a length in the range of about 2 to about 10 feet (60.96 cm to about 304.8 cm). The tubular core assembly according to claim 5.

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