Core for a roll of material
View Patent ↗A core ( 16 ) for a roll of material, which core ( 16 ) comprises a body portion ( 18 ), a first member which is removably secured to a first end ( 22 ) of the body portion ( 18 ), a first bore ( 24 ) through the first end member ( 20 ), a second end member ( 26 ) which is removably secured to a second end ( 28 ) of the body portion ( 18 ), a second bore through the second end member ( 26 ), a third bore ( 30 ) through the body portion ( 18 ), the first, second and third bores all having a common longitudinal axis, the first bore ( 24 ) having a smooth inner surface ( 32 ) whereby the first bore ( 24 ) is able to receive a chuck ( 34 ) such that centering of the chuck ( 34 ) is facilitated by the smooth inner surface of the first bore ( 24 ), the second bore having a smooth inner surface ( 32 ) whereby the second bore is able to receive a chuck ( 34 ) such that centering of the chuck ( 34 ) is facilitated by the smooth inner surface ( 32 ) of the second bore, the body portion being made of a metal, and the first and second end members ( 20, 26 ) each being made of a plastics material.
1. A core for a roll of material, which core comprises a body portion, a first end member which is removably secured to a first end of the body portion, a first bore through the first end member, a second end member which is removably secured to a second end of the body portion, a second bore through the second end member, and a third bore through the body portion, the first, second and third bores all having a common longitudinal axis, the first bore having a smooth inner surface whereby the first bore is able to receive a chuck such that centering of the chuck is facilitated by the smooth inner surface of the first bore, the second bore having a smooth inner surface whereby the second bore is able to receive a chuck such that centering of the chuck is facilitated by the smooth inner surface of the second bore, the body portion being made of a metal, the first and second end members each being made of a plastics material, the first end member having a first flange which abuts against the first end of the body portion, the second end member having a second flange which abuts against the second end of the body portion, the body portion having an uninterrupted outer surface which is such that the first and second ends of the body portion are not reduced in material and strength, the first and second flanges and the body portion all having the same outside diameter such that the core has a continuous rigid non-deformable outer surface for receiving the roll of material, and the core including radio frequency operable identity tag for enabling tracking of the core in use.
2. A core according to claim 1 in which the first end member is inserted into the third bore at the first end of the body portion, and in which the second end member is inserted into the third bore at the second end of the body portion.
3. A core according to claim 2 in which the first end of the body portion receives an insert portion on the first end member, and in which the second end of the body portion receives an insert portion on the second end member.
4. A core according to claim 3 in which the third bore has longitudinally extending splines, and in which the insert portions on the first and second end members have complementary grooves.
5. A core according to claim 4 in which the splines extend the entire length of the third bore.
6. A core according to claim 1 in which the third bore is smooth, and in which the insert portions of the first and second end members are smooth.
7. A core according to claim 1 in which the first end member has a first lead-in part, and in which the second end member has a second lead-in part.
8. A core according to claim 1 and including screws which are used in the removable securing of the first and second end members to the body portion.
9. A core according to claim 1 in which the metal is aluminium.
10. A core according to claim 9 in which the aluminium is an aluminium alloy.
11. A core according to claim 10 in which the aluminium alloy is an aluminium magnesium silicon alloy.
12. A core according to claim 1 in which the plastics material is a polypropylene co-polymer.
13. A core according to claim 1 in which the identity tag is on at least one of the first and second end members.