Envelopes – wrappers – and paperboard boxes – Wrapper – Bottle
Patent
1985-07-11
1986-09-16
Lowrance, George E.
Envelopes, wrappers, and paperboard boxes
Wrapper
Bottle
229120, 229137, 229155, B65D 574
Patent
active
046117539
DESCRIPTION:
BRIEF SUMMARY
This invention is related to a closure on a rectangular container for storing liquid.
In the market there exists a great number of closure designs for rectangular containers, including square containers, which can be sealed in such a way that the container is well suited for accomodation of liquids of different kinds.
The demands on such containers are connected with different phases of treatment through which they continuously pass. In this connection demands must be met with respect to the configuration of the blank of the container for achieving a suitable manufacture, the producer of the content has to rely on the possibility for a secure sealing of the container and a suitable industrial treatment, by transportation of the containers from the manufacturer a maximum utilization of the transport volume must be possible and finally it should be easy for the consumer to open the container to pour the contents out of it in a secure way, and in most cases it should be possible to close the container for further use. Especially, considerations must be given to the fact that many consumers have relatively weak fingers which create big problems in opening several of the present container types on the market today.
Among known containers for storage of liquids, especially milk and refreshing drinks, three principally different kinds are wide spread. One type is manufactured by planar welding of a tubular container having two welds perpendicular and remote each other in such a way that a tetrahedron is created. As such the configuration of a tetrahedron makes it possible to be placed in a stack but it is not very suitable for the consumer or in connection with transportation or storing which normally is based on a rectangular configuration.
Containers having rectangular configurations achieved by two parallel weldings on a tubular container also are known. In this case the ends of the weldings thereafter are bent down, respectively up, around the side surfaces of the container. The possibility to be placed in a stack is good, however, the configuration requires tearing off or cutting off at least one of the protruding ends of the weldings which for the consumer creates an unfavourable device for pouring in addition to the inconvenience with cutting or tearing off the ends.
In a third principle solution two opposite side surfaces are pressed together having the other opposite side surfaces folded between. Hereby a reasonable convenient configuration is achieved in connection with pouring the liquid out of the container. The configuration of the closure may be such that the closure creates a planar surface or a roof ridge form. In both cases the solutions existing in the market have shown that a relatively large force must be provided to tear off the welding after sealing. The roof ridge form which at some places is relatively wide spread, additionally is unsatisfactory in connection with transportation and storage as it does not allow stacking of several containers on each other and the closure as such occupies a relatively large volume which cannot be used, corresponding as much as up to 40% of the total height of the container.
The above-mentioned disadvantages are avoided by the closure according to the invention which enables stacking of several containers above each other, economical transportation and storage, very simple opening of the container closure, a guided pouring of the content, which avoids a mess of the liquid and which further makes possible a locking of the closure for later use.
These advantages by the closure according to the invention are achieved by the features described in the characterizing clauses of the claims.
FIG. 1 in the drawing discloses an open closure before sealing,
FIG. 2 discloses a stamped blank for a container,
FIG. 3 discloses the closure after sealing,
FIG. 4 discloses the closure after opening, as seen from above,
FIG. 5 discloses in perspective a closure which is locked after the sealing has been broken, and
FIG. 6 discloses blanks for containers arranged for maximum ut
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patent: 681323 (1901-08-01), Houghland
patent: 2034594 (1936-03-01), Norris et al.
patent: 2337730 (1943-12-01), Berch
patent: 3081927 (1963-03-01), Hayhurst
patent: 3118586 (1964-01-01), Kelly
patent: 3281048 (1966-10-01), Koltz et al.
patent: 3985287 (1976-10-01), Stetler
patent: 4422570 (1983-12-01), Lisiecki
Elkins Gary E.
Lowrance George E.
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