Bottles and jars – Neck – Drip-preventing means
Patent
1996-05-22
2000-06-27
Elkins, Gary E.
Bottles and jars
Neck
Drip-preventing means
215 43, 215256, 264529, 264530, 264535, B65D 102, B29C 1707
Patent
active
060795794
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a preform with closure as an intermediate product for a container, in particular for viscous liquids such as oils and the like.
PRIOR ART
When such liquids are being poured out of a container, such as a bottle, a droplet always remains suspended when the container is straightened up again. In order to prevent said droplet from trickling down along the outside wall of the container, it is already known to use a pouring spout consisting of two pieces which are permanently fixed against each other. In this case one pouring piece is formed by the neck of the container, and the other, the pouring piece proper, is permanently fixed in it. The abovementioned pouring piece proper is provided with an encircling external well, which acts as a droplet collector and ensures that the droplets do not run down along the external surface of the container, but flow back into the container by way of said well. This means that the container can retain a neat appearance.
However, this is an expensive process, due to the fact that two pouring pieces are required for each container. Moreover, due to the fact that the two pouring pieces are generally made of a different material, additional operations are necessary if the containers are to be recycled after use. This immediately makes the refuse processing more time-consuming.
OBJECTS OF THE INVENTION
The object of this invention is to eliminate the abovementioned drawbacks. To this end, the preform according to the invention is adapted for being subjected to blow molding a container, the preform having a bottom, a tubular wall extending upwardly from the bottom in an elongated manner, the part of the wall opposite said bottom forming a pouring spout with a profiled neck encompassing a pouring opening. The pouring spout is integral with the tublar wall, the spout having a symmetrically rotaional configuration, and the neck being provided with an externally extending annular projection forming a first pouring no-drip rib at the opening. The rib includes a downwardly extending pouring surface which extends outwardly from the wall. The external profile of the neck is provided with at least one further annular projection forming at least one second no-drip rib. The first pouring no-drip rib and the at least second no-drip rib delimitate an annular recess therebetween.
Due to the fact that the number of pouring pieces has been reduced to one, less material is required, which gives a first cost saving. The finishing costs of the usable container ready for pouring are also lower, due to the fact that the step of providing a further intermediate piece is no longer included. Besides, the preform with closure obtained is more environmentally friendly, due to the fact that recycling no longer requires prior sorting of the different pouring pieces.
Other advantages will emerge from the description which follows of an embodiment of a closable preform according to the invention with reference to the appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a sectional view along the longitudinal axis of a known preform.
FIG. 2 shows a partial view similar to that of FIG. 1 of a preform according to the invention without closure cap.
FIG. 3 shows a view similar to that of FIG. 2 with closure cap.
FIG. 4 is a view similar to that of FIG. 1.
FIGS. 5 to 11 show further variants in a partial view similar to those of FIGS. 2 and 3 respectively.
DESCRIPTION
In general, this invention relates to a closable preform intended for containing a liquid. The preform comprises a pouring spout 20 and is closable by means of a closure cap 10 (FIG. 3). The closure cap 10 is in the form of, for example, a flap cover and in this case can be flapped onto the pouring spout 20, which acts as a counter-closure for the closure cap 10.
This concerns in particular oil preforms which are obtained by means of a known production process from pre-dried PET granules and which are processed by means of an injection moulding process to give semi-finishe
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Elkins Gary E.
Resilux
LandOfFree
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