NL1027122C2 - Bucket packaging has slide for ease of opening and comprises container and cover, formed by injection moulding - Google Patents

Abstract

The bucket packaging has a slide for ease of opening and comprises a container (1) and a cover (2), formed by injection moulding. Connected to the container is a slide, which after activation, can be moved via a peripherally extending connection and thereby the connection between the container and the cover is opened. If with the slide a completely all-round movement is executed, after this movement the cover remains loosely on the container. For movement of the slide only a slight force is necessary.

Description

Bucket package with a slide for easy opening.

This invention relates to vaccine packages consisting of a container with lid as they are used for storing and transporting a wide range of liquid and semi-liquid products, such as wall plaster, paint, and food products.

Holders and lids are made by injection molding from plastics, such as polyethylene or polypropylene.

10 Because of the many design options and the low weight, they can be widely used. In addition to the round basic shape of the holder, rectangular and oval shapes have been created which, during transport, presentation to the customer, and use, have advantages in comparison with the round shape. All these differently shaped holders have in common that they must be excellently lockable and relatively easy to open. An important aspect with regard to opening is the sealing of the container closed with a lid in order to prevent unauthorized persons from attacking the contents unnoticed.

20

The invention provides an element connected to the holder which, in addition to the seal, also realizes the easy opening of the holder after activation.

25 The ability to open packages easily plays as long as packages are made. US 240707 from 1925 already describes a loose metal-shaped element for opening shoe polish cans. The element acts as a lever with which the lid is pushed so far away from the holder that it becomes easier to pull the lid further open with the fingers.

US 3753512 from 1970 describes a plastic container with a lever element included in the upper edge of the container. By pulling this element outwards and upwards, the metal-shaped cover is lifted.

In EP 1052183 a lever element is included in the top edge of the holder, which lever also serves as a seal for the assembly of holder and lid in its starting position. The seal is broken because a number of small bridges 1027122 2 material, which connect lever element and upper edge of the container, are broken when the lever element is pulled out and up.

In WO 03/076290 A1 a further improvement of the combination of easy opening and sealing is reported, in which it is prevented that the lever element can return to its starting position. Because the lever element, after breaking the seal, clearly remains outside the boundary of the upper edge of the holder, the breaking of the seal can be better observed.

US 2003/0098308 discloses another principle for easy opening and closing. It concerns a container formed from plastic foil with a lid from the same foil connected thereto. When closing such packages formed from foil, due to the low stiffness of the container, no great force can be exerted on the lid because the container would deform permanently. For closing the connection container cover a runner is used which presses a groove arranged in the cover over a groove standing on the container. The operating principle is derived from the mechanical closure on, for example, plastic bags described in US 3660875.

The use of a lever element as an aid for easy opening of a container has its limitations. Because the lever element only works locally, only a part of the lid edge is pushed out of the connection with the holder. To open the container further, the connection between the lid and the container will have to be broken with manual force. Depending on the strength of this connection, more or less force is required for this. 30

The object of the present invention is to realize an assembly of holder and lid, wherein the opening element breaks the entire connection between lid and holder with the end result that the lid comes to lie completely free on the holder and can be taken off without applying force. . When this object is achieved, the connection between container and lid can be strengthened so that it will not open easily in the event of a fall. Sealing to prevent unauthorized use, a strong connection between container and lid can be limited to the starting position of the opening element at 1027122 3.

In many systems for closing an assembly of holder and lid formed by injection molding, the holder has a circumferential snap edge located on the outer surface of the holder.

The lid edge also has a snap edge. This is located on the inner surface of the lid edge and engages the holder under the snap edge when closing. The lever elements described above locally break this snap connection by pushing the edge of the cover outwards and upwards. With the opening element according to the invention, the entire snap connection between holder and cover is opened by sliding the opening element under circumferential direction under the cover edge after locally breaking the snap connection. Only a small force is required for carrying out this sliding movement, while at the end of the movement the entire lid still lies loosely on the holder. In order to guide the opening element, hereinafter referred to as 'slide', when performing the movement in circumferential direction, provisions in holder or lid are required. In order to prevent loss, the slide will also have to remain movably connected to the holder or lid after the holder has been opened. Finally, when the container is closed again, the slide must not hinder the reconnection of the lid with the container.

25

The invention will now be elucidated with reference to the accompanying drawings, including two exemplary embodiments, to which the invention is not limited.

In the drawings: FIG. 1: A section of a snap connection between holder and lid.

FIG. 2: A view of an assembly of holder and lid with slider in the starting position.

FIG. 3: A view of the top edge of the holder with a start and end position of the slider.

FIG. 4: A cross section of the snap connection between holder and lid with slide in starting position 102712? 4

FIG. 5: A section of the snap connection between holder and lid with slide after activation.

FIG. 6: A cross-section of the snap connection between holder and cover with slide during the circumferential movement whereby snap connection 5 is broken.

FIG. 7: A first exemplary embodiment with guidance of the slide on the edge of the holder.

FIG. 8: A second exemplary embodiment with guidance of the slider on the edge of the lid and slider in the starting position.

FIG. 9: The second exemplary embodiment with slider tilted to starting position

FIG. 10: The second exemplary embodiment with slide during the circumferential movement whereby snap connection is broken.

FIG. 1 is a sectional view of a commonly used snap connection between container and lid. It consists essentially of the holder 1 and the lid 2. The wall 3 of the holder extends into the collar 4 at the opening of the holder. The holder and lid are created by the fact that the circumferential snap edge 6 arranged on the inside of the lid edge grips under snap edge 5 of the holder. The lower edge of the lid connects to the shoulder 7 of the collar, thereby discouraging manual opening of the container.

FIG. 2 shows a view of an assembly of holder and lid with the slider 8 in the starting position. The starting position is understood to mean the position that the slider takes immediately after injection molding. In FIG. 2 the slide is connected to the collar 4 of the holder 1 by means of a few small bridge-shaped sealing elements. If the slider is pressed radially in the direction of the holder, the slider with angles 9 and 10 falls behind the collar 4 and when the holder moves in the circumferential direction of the holder it is guided by the groove 11 located on the shoulder of the collar.

FIG. 3 shows a view of the collar on the holder with a starting position 12 of the slider 8 and an end position 13. If guidance of the slider takes place during the movement in the circumferential direction through the groove 11 and the lower edge 14 of the collar, then when closing or reclosing the container by means of the lid, the slide must be in the recessed positions 12 or 13 in order to be able to establish an adequate snap connection between container and lid.

FIG. 4: A cross-section of the snap connection between holder and lid with slide in starting position. Slide 8 is still in the recessed position 12 immediately after injection molding. The snap connection between holder and lid is closed. By pressing the slide, the small bridge-shaped connections 15 with the collar 4 are broken and the slide goes to the position shown in FIG. 5 drawn position.

FIG. 5, the slider is activated and, when moving in the circumferential direction guided by groove 11, can move out of the recessed position 12 to the position shown in FIG. 6 drawn position.

In FIG. 6, the slide has left the recessed position 12 and during the movement in the circumferential direction pushes open the snap connection between holder and lid.

The guiding of the slide at the top through groove 11 and at the bottom through the bottom edge 14 of the collar 4 has the disadvantage that protruding parts arranged on the collar, such as, for example, the attachment for the handle of the holder, not through the slide can be passed. As a result, full opening of the holder with the slide, so that the lid comes to lie loosely on the holder, cannot be realized. The connection holder cover can be opened with handle attachment on the collar by a maximum of an angle of approximately 150 degrees. The part of the snap connection that has not yet been opened will further have to be pulled open with manual force. The maximum opening angle of 150 degrees will be limited by the deepened starting position 12 and the end position 13. Reclosing the holder can take place with the slide in the end position 13, after which the slide 30 is moved back to position 12 for reopening. .

The stated object of the invention, i.e. the full opening of the container with the aid of the slide, is not yet achieved with guidance of the slide on the top and bottom of the collar. The object can, however, be achieved by choosing a guide arranged on the circumference of the collar situated above the points of attachment of the handle. A second alternative to guiding the slide is to fit a part of the sliding guide on the edge of the lid.

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FIG. 7 shows a first exemplary embodiment with guidance of the slide mounted on the collar of the holder. Press on the collar 4. to provide an additional groove 16 extending above the handle attachment points of the holder, a guide is created which allows a 360 degree circumferential movement for the slide 17.

A part of the sliding guide can alternatively also be provided on the edge of the lid. The sliding opening element forms a breakable element on the collar of the holder. By tilting the sliding-shaped opening element through an angle of 90 degrees, it is broken out of the collar and comes into engagement with a circumferentially extending groove-shaped guide arranged on the edge of the cover. The second guide groove for the sliding opening element is located on the collar of the holder. From the deepened starting position, the guide groove on the collar rises. As a result, the sliding-shaped opening element will break the snap connection when moving in the circumferential direction.

FIG. 8 shows a second exemplary embodiment in which the guide of the slide is partially arranged on the edge of the lid. Slide 18 is tilted out of the collar of the holder and thereby breaks the bridge-shaped sealing elements 19 and comes into engagement with groove 20 in the lid.

FIG. 9 shows the second exemplary embodiment with slide 18, tilted and in engagement with groove 20, for the start of the movement in the circumferential direction.

In FIG. 10 the second exemplary embodiment is shown while slide 18 pushes open the snap connection between holder and lid during the movement in circumferential direction.

, 1027122

Claims (12)

A bucket package consisting of an injection molded container with an upwardly directed opening, a collar located at this opening, with a circumferential snap edge on the outer surface of this collar, and a lid manufactured by means of injection molding with a snap edge arranged on the inner side of the lid edge, which edge extends in circumferential direction and which, upon closing of the holder with the lid, grips under the snap edge of the holder, a slide which is used for opening the snap connection between holder and lid characterized in that, upon opening of the snap connection between holder and cover, the slide is moved over a guide in circumferential direction of the holder and thereby pushes the edge of the cover outwards and upwards. Bucket package according to claim 1, characterized in that the slide is connected to the collar of the holder in a frangible manner. 3. Bucket package according to claim 1, characterized in that the slide is guided by a circumferential groove located on the outer surface of the collar and the underside of the collar. Bucket package according to claim 1, characterized in that the slide is guided by a circumferential groove located on the outer surface of the collar and a second groove located above it on the shoulder of the collar. Bucket package according to claim 1, characterized in that the slide is guided by a circumferentially extending groove located on the outer surface of the lid and a second groove located on the shoulder of the collar. 6. Bucket package as claimed in claim 1, characterized in that the slide opens the snap connection between holder and lid both when moving clockwise and opposite to it. 1027122 7. Bucket package according to claim 3, characterized in that, upon opening of the container, the slide is moved from a deepened starting position through an angle of at most 150 degrees in the circumferential direction to an end position which is also recessed, which movement when opening again the holder takes place in the opposite direction. 8. Bucket package according to claim 4, characterized in that when opening the container, the slide is moved from a recessed starting position through an angle of 360 degrees in the circumferential direction, thereby opening the snap connection between container and cover over the entire circumference and on the end of this movement returns to the starting position. 9. Bucket package according to claim 4, characterized in that the slide is activated in a radial direction by pressing in a position which is breakable from the collar of the holder 15. 10. Bucket package according to claim 5, characterized in that the slide is activated from a position which is frangibly connected to the collar of the container by tilting through an angle of 90 degrees and thereby engages in the circumferential direction located on the outer surface of the lid. running guide groove. 11. Bucket package according to claim 5, characterized in that, upon opening the container, the slide is moved from a recessed starting position through an angle of 360 degrees in the circumferential direction, thereby opening the snap connection between container and cover over the entire circumference and on the end of this movement returns to the starting position. 12. Bucket package according to any one of the preceding claims, characterized in that containers and lids with round, oval and rectangular shapes can be opened with the use of only a small force to be exerted on the slide. 1027122