Pack comprising a tube, a screw cap and a cover to weld over the

Details Pack comprising a tube, a screw cap and a cover to weld over the Pack comprising a tube, a screw cap and a cover to weld over the

1989-06-28

1990-09-04

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 731, 1562739, 1562751, 156294, 215232, B32B 3120, B65D 4162

Patent

active

049541919

ABSTRACT:
The invention concerns a tube with a plastic neck and with a cover to be welded over the neck after its cap has been fixed, the cover having at least one projecting portion for pulling it off, with cap holding the cover while it is being sealed over the neck. The cover has one or more projecting tabs, at least one of which is used to pull off the sealed cover and the cover is deformable and has little or no resilience. The end of the cap has a shoulder to press the cover onto the neck, which shoulder is configured so that it does not bear on the burrs of the neck, and the neck and cap have space between them for the bent back projecting tab or tabs of the cover. The invention also concerns a method of sealing the tube by induction of ultrasonic welding. The invention is used for the packaging of toiletries, cosmetics or food products.

REFERENCES:
patent: 3767076 (1973-10-01), Kennedy
patent: 4595434 (1986-06-01), Eckstein et al.
patent: 4605136 (1986-08-01), Debetencourt
patent: 4697719 (1987-10-01), Allen
patent: 4738080 (1988-04-01), Stockebrand
patent: 4750642 (1988-06-01), Eckstein et al.

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