Cap and sealing method

Details Cap and sealing method Cap and sealing method

B - Operations, Transporting

65

D

206/22

B65D 41/34 (2006.01) B65D 41/04 (2006.01) B65D 53/00 (2006.01)

Patent

CA 1113038

ABSTRACT OF THE DISCLOSURE A cap consisting of a metallic cap shell having a circular top and a skirt extending downward from the peripheral edge of the top and provided with a thread- forming portion deformable along the thread of the opening part of a container, and a flexible liner provided inwardly of the top of the cap shell; said liner including an annular protrusion having an inside diameter substantially equal to, or slightly larger than, the outside diameter of the sealing surface of the opening of a container to be sealed and comprising a perpendicular inside wall adapted to adhere intimately to the peripheral sealing surface of the container opening and an outside wall provided upright spaced apart from the inner circumferential surface of the skirt; and a process for sealing containers, which comprises (1) fitting the cap described above over the opening portion of a container having an external thread, (2) deforming the shoulder of the cap toward the sealing end of the container opening while pressing the top of the cap thereby to reduce the diameter of the shoulder; and (3) deforming the thread-forming part of the cap toward the thread of the container opening. - 1 -

273683

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