Composite container construction

Receptacles – Receptacle having flexible – removable inner liner – Means for venting air trapped between the liner and its...

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Details

206583, 220462, B65D 556, B65D 326, B65D 2514

Patent

active

041584252

ABSTRACT:
A composite container comprising a tubular body formed of spirally wound plies of paperboard or the like and an internal vacuum accommodating liner substantially coextensive with the length of the tubular body and adhesively affixed solely at the opposed ends thereof to the tubular body. The container is completed by the mounting of opposed end caps which are hermetically sealed to the adhesively secured opposed ends of the liner for the accommodation of an internally developed vacuum within the liner. Formation of the tubular body and liner is effected utilizing conventional spiral winding equipment and involves (1) spirally forming a continuous liner with wide bands of adhesive spaced to correspond generally to the length of tube desired, (2) spirally forming a continuous length of composite tubing about the liner, the liner bonding peripherally to the tubing at the adhesive bands, and (3) severing the continuous tubing at a point generally centrally of each adhesive band whereby each formed tube will have the liner thereof adhesively secured solely at the opposite ends.

REFERENCES:
patent: 2328798 (1943-09-01), Gardner
patent: 2700518 (1955-01-01), Ryno et al.
patent: 2771184 (1956-11-01), Ryno et al.
patent: 3083889 (1963-04-01), Christensson
patent: 3194471 (1965-07-01), Murphy
patent: 3487989 (1970-01-01), Rausing et al.
patent: 3942708 (1976-03-01), Christensson
patent: 3981433 (1976-09-01), Thornhill et al.
patent: 4087003 (1978-05-01), Adamek

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