| 摘要 |
A tubular core assembly and system including a rigid, open ended, tubular core body having grip strips arranged in a pattern on the outer surface of the tubular core body, at least one circumferential locking area, and a pair of annular insert members each configured to be received within respective opposed ends of the tubular core body. Upon engagement of an annular insert member with an end of the tubular core body, at least one radially extending member integrally formed on an external peripheral surface of the insert member, becomes releasably interlocked with the locking area, and one or more other radially extending members become frictionally engaged with an inner surface of the tubular core body. The pattern of the grip strips is configured such that when sheet material disposed in a first wrap around the tubular outer surface frictionally engages the grip strips, the first wrap remains releasably retained and successive wraps of the sheet material are disposed in a tightly rolled configuration. The assembly further includes an over-wrap arranged to encase a roll of sheet material wrapped around the tubular core body so that opposing ends of the over-warp are each releasably retained in a pinching engagement between a respective annular insert member and the tubular core body.
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