Protective plug for the ends of tubular cores

Details Protective plug for the ends of tubular cores Protective plug for the ends of tubular cores

1976-06-18

1978-09-19

Aegerter, Richard E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

138 98, 138112, F16L 5510

Patent

active

041146557

ABSTRACT:
A cylindrical plug bounded by flat leading and trailing faces and fabricated of interadhered layers of annular sheets of corrugated paperboard is provided for use in protecting the ends of tubular cores employed for the winding of continuous elongated web or strand products. The plug contains a central hole adapted for engagement with core-handling equipment, and contains a water-impermeable coating. The layers of paperboard are cross-lapped for greater strength, and the leading face of the plug has a slightly reduced diameter to facilitate insertion into a tubular core.

REFERENCES:
patent: 3338499 (1967-08-01), Gilbert

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