Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
  • B65D25/38—Devices for discharging contents
  • B65D25/40—Nozzles or spouts
  • B65D25/42—Integral or attached nozzles or spouts

Definitions

• the present invention concerns a plastic container for liquids.
• the invention concerns a container for liquids equipped with an anti-squirt device.
• Containers for liquids of the prior art such as canisters, bottles, drums and the like, have the unpleasant drawback of emitting the liquid contained in a discontinuous manner while pouring the liquid from the container through its mouth accessing the inner cavity. This results in unpleasant surges or splashes during the pouring stage. This is mainly due to a lack of balance between the inner pressure in the cavity of the container and outer pressure while emptying the container.
• a vent hole also known as an "anti-glug" hole
• vent hole in addition to being unsightly, cannot be used in containers that need to be closed after opening, except by providing a further vent hole closure cap, resulting in inconvenience during use and complicated operations for obtaining the vent hole and the vent closure cap.
• the object of the present invention is to overcome the aforesaid drawbacks of the plastic containers of the prior art .
• Such object is achieved by a plastic container in accordance with the accompanying independent claims.
• the claims dependent thereon describe advantageous variant embodiments .
• figure 1 represents a cross-sectional view of a plastic container in accordance with an embodiment according to the present invention
• FIG. 2 represents a plan view from the top, from the side of the liquid outflow mouth, of a plastic container in accordance with an embodiment according to the present invention .
• a plastic container 1 for liquids preferably made by injection molding, comprises a bottom wall 2, a side wall 3 projecting from the bottom wall 2, and a top wall 4, joined to the side wall.
• Such bottom 2, side 3 and top 4 walls define an inner cavity 10 of the container suitable to contain the liquid.
• the plastic container is for example a canister, a drum, a bottle, or the like.
• plastic means any polymer, for example a synthetic resin, or an elastomer, or a thermoplastic or thermosetting polymer, preferably selected from the group of polyethylenes , polypropylenes, methacrylates, polycarbonates or polyamides, or a compostable or biodegradable polymer, e.g. PLA.
• the plastic material used for making the container 1 is a high-density polyethylene having a density between 0.8 and 1 g/cm3, preferably 0.95 g/cm3 and a Melt Flow Rate at 190°C 5.0 kg greater than 0.4 g/10 min and a Melt Flow Rate at 190°C 21.6 kg greater than 9 g/10 min, measured according to the IS01133 test method. Even more preferably, the Melt Flow Rate at 190°C 5.0 kg is about 0.9 g/10 min and the Melt Flow Rate at 190°C 21.6 kg is about 23 g/10 min.
• the plastic material used for injection molding is a high-viscosity material, typically used for blow molding techniques.
• the plastic container is manufactured by a method of injection molding described in the document W02016092407A1 or in the document WO2018146626A1, in the name of the same inventors of the present invention.
• the upper wall 4 comprises a liquid discharge mouth 41 with an upper edge 410 from which the liquid flows outward.
• the container 1 comprises a tubular venting element 5 to balance the pressure in the inner cavity 10 with the external environment.
• Such tubular venting element 5 comprises a tubular cavity 51 which extends mainly along a vertical direction X, substantially perpendicular to the bottom wall
• Such tubular cavity 51 extends between an upper mouth 52 and a lower mouth 53 arranged more internally relative to the upper mouth 52 toward the inner cavity 10.
• the lower mouth 53 is spaced from the bottom wall 2.
• the tubular venting element 5 is made in one piece with the upper wall 4 and/or with the side wall 3 and is arranged near the liquid outflow mouth 41 so that the upper mouth 52 at least partially shares a space S with the liquid outflow mouth 41.
• shared space S is, for example, a portion of a neck space C defined by a neck 42 of the container which forms the liquid outflow mouth 41 and which is suitable to receive a cap for the hermetic closure of the container.
• the upper mouth 52 is spaced from the upper edge 410 of the liquid outflow mouth 41 toward the inner cavity 10.
• the lower mouth 53 has a lower edge 530 lying on a plane P transverse to the vertical direction X, preferably a plane P parallel to the bottom wall 2.
• the lower edge 530 lies inside the inner cavity 10 and is spaced from the upper edge 410 of the liquid outflow mouth 41 at a predefined distance L less than 40% of the total distance LI between the upper edge 410 and the plane passing through the point F of the bottom wall 2 furthest from the upper edge 410 inside the inner cavity 10.
• the predefined distance L is less than 25% of the total distance LI.
• the predefined distance L is between 3 cm and 9 cm.
• the tubular venting element 5 comprises a lip 54 which extends from the upper mouth 52 and extends into said neck 42 for a lip length D from the base of the neck 42.
• Such lip 54 comprises an upper lip edge 540 spaced from the upper edge 410 of the liquid outlet mouth 41 so as not to protrude beyond the upper edge 410.
• the upper lip edge 540 is spaced from the upper edge 410 of the liquid outflow mouth 41 toward the inner cavity 10 at a distance D1 of at least 5 mm, preferably at least 1 cm.
• the tubular venting element 5 comprises a right vertical wall 55, a left vertical wall 56 facing the right vertical wall 55, joined together by a rear vertical wall 57 and a front vertical wall 58.
• the rear vertical wall 57 faces the front vertical wall 58, and the left vertical wall 56 juts out from a bottom edge 420 of the neck 42 opposite the top edge 410 on the side of the inner cavity 10.
• the right vertical wall 55 is arranged inside the neck 42 and, preferably, the left vertical wall 56 is not arranged inside the neck 42.
• the cross-section of the tubular venting element 5 has an ellipsoidal or "racetrack” shape, as, for example, shown in figure 2.
• the container according to the present invention allows surges and splashes of liquid to be avoided while pouring the liquid from the container, without needing to create additional holes in the walls of the container and without needing to add additional anti-squirt devices on the mouth of the container.
• the presence of the upper lip edge 540, spaced from the upper edge 410 of the liquid outflow mouth 41, allows the adequate filling of the container to be ensured through the use of automatic filling guns suitable to engage inside the neck of the container without obstacles.
• the extension in length of the tubular element only for a portion equal to 25% of the total height of the container allows splashes to be avoided and at the same time prevents the tubular venting cavity 51 from being blocked by the liquid itself during pouring.
• the particular ellipsoidal or racetrack shape of the cross-section of the tubular element allows the volume of air passage to be maximized and at the same time occupies as little space as possible in the liquid outflow mouth 41.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Containers Having Bodies Formed In One Piece (AREA)
• Closures For Containers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62167719

Family Applications (1)

Country Status (2)

Citations (4)

• 2018
  • 2018-02-19 IT IT102018000002815A patent/IT201800002815A1/it unknown
• 2019
  • 2019-02-18 WO PCT/IB2019/051293 patent/WO2019159145A1/en active Application Filing

Patent Citations (4)

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