Bottles and jars – Closures – Substitute closure having means to remove original closure
Patent
1996-08-19
1998-12-22
Cronin, Stephen K.
Bottles and jars
Closures
Substitute closure having means to remove original closure
215228, 220212, 220334, 222 83, 2225412, B65D 5122
Patent
active
058509305
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for opening a pouring part attached to the top wall of a package for flowable media and projecting in a raised manner from said top wall, having a cap extending over the pouring part and removably fitted to said pouring part.
Opening devices made from plastics have previously been attached to the top wall of a cuboid or gable-ended folded package, provided in the manner previously described with a pouring part and a cap extending over it.
In an earlier proposal made internally within the company, the top wall, made from deep-drawable plastics, was moulded by deep-drawing in the area of the pouring apparatus in such a way that a cylinder-walled, outwardly closed pouring apparatus was formed, opening out only into the interior of the package, on to which a cap was pushed or screwed, but in either case in a removable manner. The pouring part according to this earlier, proposal made internally within the company was provided with a cylindrical-walled collar and a sealing wall attached to its outer end. In the outer periphery of the sealing wall a weakened line was provided and the plate-shaped planar wall of the cap lying adjacent to the sealing wall was welded to the sealing wall. In this way an attempt was made to keep the package completely sealed even though the cap was fitted and welded tight subsequently. In this way, aseptic packaging of contents is made easier. Further, it was desired that when the cap was removed for initial opening, the sealing wall was released from the pouring part along the weakened line and removed with the cap.
In time, however, it was shown that not only the surface of the sealing wall lying inside the weakened line or pre-determined breakage line was torn out during removal, but also a piece of the pouring part. With other designs, the top wall of the cap was torn out as the pre-determined breakage line was not made weak enough.
The object of the invention is therefore to provide an opening device of the type described in the introduction, with which an economically producible package can be reliably opened logically, simply and without excessive expenditure of force, such that apart from the cap, no other part is separated.
This object is solved according to the invention in that the cap is rotatable over at least approximately 90.degree. in relation to the pouring apparatus and is provided with an internal space and at least one blade projecting into said space, which, for opening by means of cutting out, can be inserted into an at least partly annular surface section. With the new opening device the cap no longer needs to be sealed to the pouring part, and in particular manufacturing is more economical because of this because no special pre-determined breakage lines, which also tear reliably when the cap is removed, have to be introduced in the pouring apparatus itself. According to the invention at least one blade is provided in the cap such that for opening it is inserted in the surface section and cuts said section by its rotation. Cutting out in general means less expenditure of force is needed by the end-user than for tearing through a weakened line. In addition, the engagement of a blade and its capacity to cut increases the reliability of the opening procedure. Lastly, the blade can be fitted in such a manner that although the sealing wall which is cut out is separated from the pouring part, it remains attached to the inside of the cap and is reliably retained such that when the cap is removed a further part of the package does not have to be disposed of.
It is also advantageous according to the invention when the pouring part attached to the top wall of the package is provided with a collar protruding from the top wall and a sealing wall attached to its outer end on which the surface section is arranged, and when the surface section together with the collar encloses an angle of 5.degree. to 60.degree., preferably of 15.degree. to 45.degree., and particularly preferably of 25.degree. to 35.degree.. It is known to insert a pouring par
REFERENCES:
patent: 1859008 (1932-05-01), Stamer
patent: 2006235 (1935-06-01), Faveri et al.
patent: 2695738 (1954-11-01), Gordon
patent: 3187918 (1965-06-01), Moore
patent: 3335923 (1967-08-01), Healy
patent: 4185756 (1980-01-01), Sciamonte
patent: 4634013 (1987-01-01), Bar-Kokhba
patent: 4709830 (1987-12-01), Kreiseder
patent: 4867326 (1989-09-01), O'Meara
patent: 4898293 (1990-02-01), Morel
patent: 5094361 (1992-03-01), Dubach
patent: 5255813 (1993-10-01), Berggren et al.
patent: 5441180 (1995-08-01), Woodruff
patent: 5505326 (1996-04-01), Junko
Jonsson Leif
Nilsson Tommy
Cronin Stephen K.
Dunn Michael L.
Hylton Robin A.
Tetra Laval Holdings & Finance S.A.
LandOfFree
Pouring part of a package and opening device therefore does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pouring part of a package and opening device therefore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pouring part of a package and opening device therefore will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2039342