RO120833B1 - Cone-shaped recipient and cover - Google Patents

Abstract

The invention relates to a cone-shaped recipient and to a cover for his recipient. According to the invention, the recipient consists of a cone-shaped recipient (C) made of paper or cardboard, having an outer edge (10) in its opening region for fixing a plastic material cover (D) that is provided with a groove (1) for continuously securing, in a circumferential direction, for receiving the edge, the securing groove (1) being continued towards the outer side with a resiliently deformable necking (14) and to the inner side, with an external wall (6) of a seating of the U-shaped cover (D), said external wall being continuous on a circumferential direction, a U-shaped band (22) positioned below the upper position of the necking (14) and of the internal bearing wall (23), that belong to a wall of a vault (2) extending upwards, beyond the upper position of the necking (14). The seating of cover (D) extends downwards beyond the upper position of the necking and presents an external diameter of its outer surface that is adapted to the inner diameter of the wall of the recipient (C), so that the seating of cover (D) operates at least as a centring and guiding projection for the closing operation of cover (D), said projection slidably cooperating with the recipient wall, at least while the edge (10) goes beyond the necking.

Description

The present invention relates to a conical shaped container and a lid for this container.

Within the plastic cover with a press-fit, the conical-shaped container, shown in US 5253781 A, the outer surface of the outer wall supporting the lid housing, extends downward, just slightly beyond the upper position of the neck. The angle of the cone and the outer diameter of the outer surface match the angle of the cone and the inner diameter of the wall of the container, so that the outer surface does not make significant contact with the wall of the container even when the rim of the container, which is made as a corrugated border, is supported. completely on the fixing groove. Due to the small outer surface compared to the much larger radial dimension of the U-band of the lid slot, the fixing groove inclines inward during the closing operation by pressing; this prevents the border from moving smoothly over the entire length of the neck circumference.

It is thus necessary first, to manually center the cover with the fixing groove precisely positioned on the edge and then to press the cover, the pressure acting directly on the upper wall of the fixing groove, with a slight movement of the hand rotation. This pressing action is unwanted, time consuming and increases the risk that the curb will not fit properly in the fixing groove in some places, along the circumference of the mouth of the container. This results in the possibility of the liquid leaking outwards when the filled container is tilted. The lid opens easily, in an inappropriate way, if the full container overturns, due to the region of the mouth of the container which deforms very radially.

US 5975344 discloses a large volume container, obtained by injection molding of PE, having a cylindrical container wall in the upper opening area and a highly resistant injection molding cap, the surface of which is below the extremity of the highest point height of the periphery of the lid.

DE 10057277 shows a lid for a leak-proof glass, the upper surface of which (figs. 3 to 6) is made with a conical or cylindrical central recess. The bottom of the recess has a smaller wall thickness than the top surface of the lid and is provided with cross ribs, cross cut lines, cut, for the introduction of a straw. The lid is a spare lid for replacing the original lid with which the container is provided.

It is an object of the present invention to provide a container, as well as a lid which is suitable for said container, through which an easy closing operation of the lid can be obtained, even by inexperienced persons, so that the pressing on the lid to provide high protection when leaking and opening the lid, when the container overturns. Even though the purpose of the invention is to provide increased cap retention force and perfect sealing, the cap must remain easy to secure.

Since, according to the present invention, the outer support wall has a relatively long downward extension, the U-band of the lid slot, and the inner support wall is usually a rigid centering and guide projection that reaches through the slider , the wall of the container at least when the curb moves behind the neck. The fixing groove is precisely centered automatically on the curb, and the curb is tightened virtually to a passage along its entire circumference, passing the neck into the fixing groove by applying a pressure essentially only to the upper wall of the arch.

The sliding contact between the outer surface and the wall of the container guides the neck evenly over the edge, due to the guide and centering, the edge generating resistance

EN 120833 Β1 uniform with respect to the downward movement of the lid in any position. The guide projections 1 convert the pressure applied to the bolt into a downwardly distributed pull force along the neck to pull the neck evenly over the curb, until the curl 3 is correctly positioned in the fixing groove.

This advantageous effect of the guide and centering projection, which is actually a cone or 5 cylinder, and of the uniform transmission force, when they act together, provide a strong clamping force between the rim and the fixing groove, the force mentioned 7 tightening resulting from a relatively close sizing between the rim and the fixing groove, and the given elasticity. This ensures that the lid is tightened to prevent leakage, and that the curb, even locally, does not leave the fixing groove if the container overturns. 11

The shape of the bolt and the housing of the container results in a rigid structure integrated inside the lid, a structure on which the clamping force is applied, for effectively tightening the lid 13 without bending the lid. The strong tightening of the lid, due to the rigidity of the mouth of the container, results in excellent spillage protection and good leakage protection as well.

A particularly important aspect of the invention is a continuously acting circumferential articulation mechanism which is integrated into the lid. This allows in practice the easy tightening of the lid due to a quick grip with the hand. As soon as the pressure 19 is applied, at least on the upper wall of the vault, the vault is lowered, the displaced inner support wall inclines the U-band downward, around the joint formed at the transition between the 21-U-band and the outer supporting wall, as soon as the resistance when moving the neck over the curb it starts to grow. The tilting motion of the U-band temporarily tends to pull the outer support wall 23 away from the inner support wall of the container. The contact between the curb and the neckline inclines the neck towards the outside and the fixing groove diverges. Due to the tightening pressure or, if necessary, by automatic or alternative pressing on the outer periphery of the lid when the vault is pushed downward, the curb easily exceeds the neck at a passage. When the pressure is lowered, the hinging mechanism restores the lid attachment, for example, the U-band returns to an essentially 29 position perpendicular to the axis of the lid and holds the outer supporting wall against the inner wall of the container. The neck is turned behind the curb, until the curb is fixed by means of a tightening and sealing force inside the fastening groove.

The vault extending upwards allows the connecting mechanism to be actuated first by lowering the vault in relation to the fixing groove and opening the fixing groove before the curb penetrates into it. Then the vault returns to its original, high position. During the tightening, the upper wall of the bolt may be lowered by applying pressure, until the palm of the hand determines that the periphery of the lid easily performs the complete tightening action 37.

The rim of the container may be formed as a corrugated border, as a fully rolled edge 39, or as a partially corrugated or half-rolled edge, or as a flange with the edge bent outwards. An easy and convenient lid tightening action is achieved in any situation, resulting in leak protection and a stable lid fixing effect. A single constructive shape of the lid fits with several variants of 43 making the border.

The lid is constructed to optimize and ease the closing action, despite a strong clamping force exerted during the closing action. Due to its shape, the lid is relatively rigid in its central area, so that the curb can be easily tightened 47 and completely inside the fixing groove, in a watertight manner and fastened by applying a force to the closing direction, assisted by the aid guide and centering projection, 49 as well as by temporarily opening the fixing groove through a movement of the vault in relation to the neck. 51

RO 120833 Β1

For this function it may be important for the U-band to extend substantially in plane and perpendicular to the axis of the lid, and also that the inner support wall be substantially parallel to the axis of the lid. Due to these structural features, the entire hinging mechanism acts properly when a downward pressure is applied to the lid, mainly for mechanical reasons, the inner supporting wall behaves more rigidly than the outer supporting wall when the U-band is inclined such that Appropriately the outer support wall must be made inwards and then temporarily open the fixing groove on the inner side.

It may be more efficient for the outer surface to cooperate in a sliding manner with the wall of the container just before the rim begins to deform the neck elastically. This has the effect that the fixing groove and the collar respectively are positioned over the curb in a perfectly centered position, so that the curb will have to essentially exceed the same strength to pass the full length of the girth and, that is, it is easily and evenly tightened in the fastening groove.

When the angles of the conical shape of the outer surface and the wall of the container are approximately identical, the outer diameter of the outer surface must correspond, at the upper position of the neck, to at least the inner diameter of the wall of the container in the opening area, so that the centering effect and guidance should already begin before the border reaches the neck. When the edge is attached to the groove, especially when the soft material of the container should be removed from the rim and from the wall of the container, so that a strong grip is established when the lid is tight. In addition or concurrently, the outer wall for supporting the lid housing can be slightly protruded outside, as a consequence of the contact pressure between the outer surface and the wall of the container.

The outer diameter of the outer surface of the fixing groove may be even slightly larger than the inner diameter of the wall of the container, in the opening area, for example where the inner wall is curved outwards inside the rim. This measure guarantees that during the entire movement of the curb over the neck towards the fixing groove, a significant guide and centering will take place. An oversize of the diameter by about 3.5% o, for example between about 1.5% o and 5% o, depending on the size of the container, can be advantageous.

A slight downward extension of the outer surface beyond the upper position of the neck is important for the centering and guiding effect. The lid can also be closed by applying pressure to the bolt only. The outer surface may be at least 2.5 times the height of the fixing groove. Providing a height of three times the height, or even four times the height of the fixing groove, can be even more advantageous. It should be noted that due to the pressure between the outer surface and the wall of the container and through an increased contact area, a sealing effect complementary to the sealing effect achieved by the curb in the fixing groove will result.

An angle of the cone having a value between about 6 ° and 12 °, for example a total angle of the cone between about 12 ° and 24 °, may be advantageous. A preferred range of angle value is about 8 ° to 10 °, for example between about 16 ° and 20 ° in total.

The recesses formed in the area where the upper part of the upper wall of the vault joins with the outer wall of the vault facilitates the easy action of tightening the lid and increases the rigidity of the vault. In addition, the recesses provide visual clues to where the fingers should be applied and define clamping places for comfortable removal of the lid from the locked position. The underfed recesses not only provide hand grip holders, but they can define capping shoulders. Each cover can only be supported with the shoulders of the recesses on the upper wall of the bolt of the next cover so that the stacked covers cannot be overturned.

RO 120833 Β1

In order to obtain a strong clamping force between the rim and the fixing groove, which 1 is important for achieving the sealing effect, the radial thickness of the rim must be greater than the radial inner width of the fixing groove. The soft paper or cardboard material of the container and the material of the curb respectively yield on the inner and outer sides as soon as the curb is placed in the fixing groove. Deformed areas with flat contact surfaces, and not just contact lines, provide an improved sealing effect. 7

The radial thickness of the curb should be between 10% and 20%, preferably approximately

15% higher than the value of the radiated inner width of the fixing groove. This size ensures a good sealing effect and at the same time, only moderate forces will be required to tighten the lid on the container. 11

To improve the retention effect of the lid on the curb and the gradual crushing of the material, the radial inner width of the fixing groove may decrease in a direction 13 opposite to the clamping direction, in relation to the angle of the cone of the wall of the container. The fixing groove will thus produce a pinching effect until the curb is fixed in position.

In order to improve the retention effect of the lid, at least one area in the form of a 17 belt with an increased coefficient of friction should be provided on the outer surface of the outer supporting wall and / or on the inner wall of the container. This may result in an increased coefficient of friction of the joint between the lid and the container and a rigid mouth of the container. 21

Another important aspect of the invention is that the neck may consist of successively positioned higher and less high recesses, formed externally. Preferably, the 23 shallow depths are longer in a circumferential direction than the lower shallow ones. This facilitates the closing action and ensures a stable and 25-year sustaining effect, as well as a rigidity of the lid periphery.

A variety of distinct projections can be provided embossed on the upper wall 27 of the vault, to allow identification of the type of liquid from the outside, for example cola, dietary cola, orange juice, etc. the projections can be push buttons. 29

Another important aspect of the invention is the penetration region formed in the upper wall of the vault. This region may have a thinner, thinner wall, at least 31 inches from the upper wall of the vault, and has intersecting nerves through which a straw can easily be introduced, by breaking the ribs. The reduced wall thickness allows the insertion of the straw much easier. The reduced wall thickness can be achieved by local compression of the cover material. The low wall thickness region is particularly useful for a relatively rigid lid, having a thicker wall relative to conventional lids. The provision of the thinner region, however, has an advantage over all 37 covers of this form, as this measure generally facilitates the introduction of straw. 39

The penetration region for the easy introduction of the straw is provided on the bottom of a housing, for example located in the center of the upper wall of the vault. The reduced thickness of the bottom wall increases the stiffness of the bolt with respect to the easy to tighten action.

The penetration region may be curved inwardly to facilitate the insertion of the straw 43 and to increase the resistance to outward flaming due to liquid pressure. The bending also results in an automatic closing effect of the broken ribs, 45 after the straw is introduced and when the pressure of the liquid acts from the inside on the tilting portions defined by the broken ribs. A contour of the slot corresponding to 47 with two ellipses whose principal axes are offset from each other by 90 °, increase

RO 120833 Β1 stiffness of the arch and offers an attractive appearance to the design of the arch. Cross nerves are easily made along the main axes of both ellipses. The existence of only a thin central wall portion on the bottom may be sufficient to facilitate the introduction of straw.

still another important aspect of the invention is directed to an easy-to-hold lid for a conical container with double walls of paper or cardboard. The double-walled containers of paper or cardboard, conventionally, have an opening area where the inner wall of the container is deformed to the outside in a step, and is then connected to the outer wall of the container. The border is formed at the upper end of the inner wall of the container. The cone angle of the conical inner wall of the container with double walls is larger below the wide upper opening area, which forms a continuation of the lower wall of the container through a circumferential shoulder and has an angle of cone smaller or even equal to zero, relative to the bottom wall of the container.

The lid placed on the curb already makes contact with the enlarged opening area of the inner wall, through the centering and guide cone when the curb reaches contact with the neck, during the pressing action to close, the lid is centered and guided over the curb. The guide and centering projection is drawn inward, due to the deformation that occurs between the downwardly pressed vault and the fixing groove, so that the curl passes through the neck more easily. The lid, when pressed to be closed, ensures excellent sealing and rigidity in the opening region of the container.

The angle of the cone of the outer surface of the guide and centering projection may be zero or be less than the value of the conical angle of the inner wall of the container. The rigid guide and centering projection forces the edge to a position that ensures leakage conditions in the fixing groove and can even cause deformation of the container opening area with double walls, in order to improve the rigidity and tightness of the edge portion of the container.

The guide and centering projection, in this case, must be continued downwards through a stepped portion, facing downwards of the outer support wall, dimensioned to cooperate with the wall of the container for fixing by pressing. The downward-facing step portion must have an angle of the cone essentially equal to the angle of the cone of the inner wall of the container under the upper opening area, in steps. The cooperation between the step portion and the inner wall of the container ensures an intensification of the sealing effect on a large surface, inside the container.

Embodiments of the invention are explained by referring to FIG. 1 ... 18, wherein:

FIG. 1 is a side view of the lid;

FIG. 2 is a sectional view along the axis of the lid of FIG. 1;

FIG. 3 is a sectional view along the axis of the container for which the lid of FIG. 1 and 2;

FIG. 4 shows an enlarged sectional view of a closure phase of the lid on the container;

FIG. 5 shows a sectional view of a phase in which the lid has been completely fixed to the container;

FIG. 6 is an axial section view of another embodiment of the lid;

FIG. 7 is a side view of a portion of the lid of FIG. 6;

FIG. 8 is part of a portion of the lid of FIG. 6, in a phase of the lid closing action, in which the rim of the container has reached the neck;

FIG. 9 is a view corresponding to Figure 8, in a closure phase, in which the fastening groove is temporarily opened during the closure of the lid;

RO 120833 Β1

FIG. 10 is a view corresponding to FIG. 8, in a phase in which the lid is 1 properly closed;

FIG. 11 is a plan view of the lid bolt of FIG. 6, 3

FIG. 12 is an axial section view through the center of the bolt in FIG. 11, in section plan XII - XII; 5

FIG. 13 is an axial section view of another embodiment of the lid;

FIG. 14 is a view of the lid of FIG. 13. seen from below; 7

FIG. 15 is a stack of caps consisting of a few caps of FIG. 13 and 14;

FIG. 16 is an axial section view of a lid and a double-walled container 9 in a preparatory phase for closing the lid;

FIG. 17 is a sectional view similar to that of FIG. 16, with the complete lid 11 closed on the container with double walls; and

FIG. 18 is a sectional view similar to that of FIG. 5, in another example of embodiment 13.

A lid D which is intended to be used for a C-shaped container, 15, consisting of paper, cardboard or plastic, is, for example, made of elastic plastic foil and has a wall thickness of 0.3 to 0. , 5 mm (fig. 1). The lid is adapted to be closed 17 on an opening area 9 of the container C, so that said container C is closed in a non-leaking manner, so that the lid D will not exit, even in the situation where the full container C is overturned. The cover D (fig. 1) is provided with a peripheral, continuous groove 1, in a circumferential direction, above which an arch 2 is arched, on the 21 inner side of the fixation groove 1. The bolt 2 is separated by the fixing groove 1 through a circumferential housing V, substantially uniform, and is provided with a superior wall 5, in essentially flat plane 23 and some recesses 3, distributed circumferentially. In relation to the fastening groove 1, an outer supporting wall 4, of the seat V, of the lid (Fig. 2) extends 25 down beyond the plane of the fastening groove 1.

The lid D (fig. 2) is fixed over the opening area 9 of the container C (fig. 3) by 27 applying a pressure R, for example only on the upper wall 5 of the vault, in the closing direction. The upper wall 5 of the vault extends essentially parallel to the plane of the lid 29 D. The seat V of the lid has a U-shaped cross-section and concentricly surrounds the vault 2. the seat V of the lid connected via an outer support wall 4, which 31 In this embodiment it has a downwardly tapered conical shape, through a U-shaped lower band 22, and through an inner support wall 23, which forms a 33wardly curved outer wall. The outer support wall 6 is arranged at a conical angle a / 2, which may correspond at least to the conical angle a / 2 of the wall 35 of the container 7.

At the lower end of the wall of the container 7 is positioned a bottom 8 of the container, 37 (fig. 3), and where the opening area 9 of the container is delimited by the wall 7 of the container and a border 10, which is projected outwards, preferably a border 39 called a corrugated border 11, consisting of the cardboard or paper from which the container C. 41 is made. In the case of a plastic container, the edge 10 may also be produced by injection molding. The edge 10 can only be made as a half corrugated edge 43 or as a flange with the edge projecting outwards.

Fig. 4 shows the cover D over the edge 10, which is formed as a corrugated border 45 11.0 neck 14 of the cover D rests on the edge 10.

RO 120833 Β1

The outer support wall 4 is continued, at the upper end through a wall 12, which extends approximately parallel to the plane of the lid and through a threshold 13. The threshold 13 extends approximately parallel to the axis of the lid D downward towards the neck 14. The neck 14 it can be a large one that extends inwardly and forms a rounded inner tip. The tip 15 and the neck 14 may be continuous in a circumferential direction, or alternatively, they may be formed by individual, local recesses between which (indicated by a dotted line) the outer contour continues. The neck 14 is contained downwards by a wall 16, inclined outwards, defining an inclined fixing surface 17. From the wall 16, an additional threshold 18 extends downwards, ending with an outer flange 19. the height of the additional threshold 18 may be smaller than illustrated.

The radial thickness Y of the rim 10, measured in the transition zone from the straight wall 7 of the container to the curvature of the rim 10, may be greater than the radial inner width Y1 of the fixing groove 11. The radial thickness Y may exceed the inner width Y1 by 10%. at 20%, preferably about 15%. In the fixing groove 1 the radial inner width Y1 decreases gradually, preferably with the angle of cone a / 2 starting from the neck 14 towards the wall 12.

The fixing groove 1 defines a length L between the tip 15 and the inner side of the wall 12. The outer support wall 4 extends downward from the upper position of the collar 14 with a length L1, which may be at least 2.5 times of length L, preferably three times, and best four times of length L or even greater.

The outer diameter D1 of the outer surface 6 of the outer support wall 4 in the upper position of the neck 14 (for example at the tip 15) corresponds at least in size with the inner diameter D7 of the wall 7 of the container in the border area 10, for example in the area of transition from the straight wall 7, of the container, to the curvature of the edge 10, facing outwards. The outer diameter D2, of the outer surface 6, of the outer support wall 4, at the junction with the wall 12, is even pronounced larger than the inner diameter D7, preferably about 1.5% o to 5% o, and better by approx. 3.5% o.

When the pressure R is applied to the bolt 2, in FIG. 4, the outer surface 6 already makes contact by sliding with the wall 7 of the container, before or as soon as the edge 10 reaches the neck 14. The slot V of the lid forms a centering and guide projection K, which supports and facilitates the easy closing operation of the lid D It will be easier when the sliding contact is established just before the edge 10 reaches the neck 14. When the cover D is further depressed, the edge 10 will deform the neck 14 outwardly; During this process, the rim 10 is slightly deformed before moving over the tip 15 and slides into the fixing groove 1 (fig. 5). The double-hatched regions shown in fig. 5 shows the compressed areas 20, 21, formed in the border 10 and the wall 7 of the container, to ensure the effects of sealing, retaining and stiffening. Alternatively or additionally, the outer support wall 4 may be made inwards (position indicated by the dotted lines 2Γ).

The cover D of FIG. 6 to 10 differs from the cover D in FIG. 1 to 5 through a modified construction of the neck 14 and through the seat 24 of the upper wall 5 of the vault. The neck 14 (fig. 7) is formed by alternating the depths with a higher height with those having a lower height 16a, 16b. The recesses 16a, 16b form an inner edge 15 in a corrugated shape. The larger depths 16a may be longer in a circumferential direction than the smaller depths 16b. In addition, FIG. 7 shows through the dotted line 19 'a shorter threshold 18.

in FIG. 6 the housing 24 has a bottom region 25 with a limited size, substantially parallel to, and located below the upper wall 5 of the vault. The thickness of the wall x of the cover D is in mode

RO 120833 Β1 substantially constant. Only region 25 is thinner (thickness x1), for example by 1 compression of the material. Region 25 is located in the center of the upper wall of the vault 5.

For the introduction of a straw, the region 25 is formed with cross ribs 26, which can be 3 broken. Easily, the region 25 can be curved to the inner side of the bolt 2.

The recesses 3 in the transition zone from the upper wall 5 of the bolt to the inner wall 5 of the support 23, increases the rigidity of the bolt 2 and allows the grip of the cover D with the tips of the fingers, for easier removal of the cover D from a stack of covers, 7 and to place the lid D on the container C. The closing force R can be applied even on the recesses 3 of the bolt. However, it is preferred that the easy closing action be performed by pressing the palm of the hand on the upper wall 5 of the vault.

in FIG. 6, the outer support wall 4 may have at least one area 30 in the form 11 of a strip in which the friction coefficient is increased to obtain an increased retention effect, as soon as the lid D is closed. The area 30 may be higher than the one presented, or it may be narrower or wider. Such an area with an increased friction coefficient may also be provided on the wall 7 of the container, either in place of the area 15 30 of the lid or in collaboration with the area 30 of the lid D.

A mechanism M continuous in a circumferential direction, is integrated 17 in the cover D by the construction and shape of the bolt 2 and the seat V. The mechanism of articulation can help the closure of the cover D, as shown in particular in fig. 6 to 10. 19

The mechanism of articulation M of the lid D consists of the vault 2, the inner support wall 23, the U-shaped band 22, and the outer support wall 4. The transitions from the outer support wall 21 to the U-shaped band 22 and the to the U-shaped strip 22 on the inner support wall 23 define the joints 29. The inner support wall 23 extends 23 essentially parallel to the longitudinal axis of the lid, while the U-shaped strip 22 is flat and perpendicular to the axis cover. It should be noted that due to the stiffness 25 of the bolt 2 and due to the smaller diameter of the inner supporting wall 23 relative to the larger diameter of the outer supporting wall 4, the outer supporting wall will bend 27 more inwardly relative to the inner wall. support 23. This effect is used for the temporary opening of the fixing groove 1 and for easier closure of the lid 29.

in FIG. 8 the lid D is positioned over the edge 10 of the container C, so that 31 the entire circumferential extension of the neck 14 will be centered on the edge 10.The outer support wall 4 touches the wall 7 of the container. At this moment, a closing force R is applied, for example, to the upper wall 5 of the vault, with the palm of the hand until the upper wall 5 of the vault descends (see fig. 9). 35 in FIG. 9, a reaction force R 'acts in the opposite direction to the closing force R, since the neck 14 rests on the edge 10. The inner support wall 23 37 inclines the U-shaped band 22 downwardly through the inner joint 29 in the transition zone from the inner support wall 23 to the U-shaped band 22 Due to the radial rigidity 39 of the bolt 2, the inclination of the U-shaped band 22 results in a force 28 acting on the outer joint 29. The force 20 releases the outer wall. support 4 of the wall 41 7 of the container so that even the fixing groove 1 can be opened on the inner side. The threshold 18 is moved outwards in the direction of the arrow 27 by the reaction force 43 R ', so that even the fixation groove 1 can be temporarily opened at the outside.

Under the action of the closing force R and as the upper wall 5 of the vault is lowered, it is then possible to press the wall 12, the edge 10 sliding over the neck 14 until finally it is caught in the fixing groove 1. 47

RO 120833 Β1 in fig. 10, the closing force R was deleted. The U-shaped strip 22 returns due to its elasticity in a direction essentially perpendicular to the axis of the lid and presses the outer support wall 4 against the wall 7 of the container. Threshold 8 also returns due to elasticity. The fixing groove 1 retains the edge 10. The centering projection K and the fixing groove 1 significantly stiffen the opening portion of the container C.

in FIG. 11, the slot 24 has a contour of the quadrilateral wall shape, for example a contour that can be characterized by two ellipses of the same size whose main axes are offset by 90 '. The cut lines 26 in region 25 extend along the main axes of both ellipses. Fig. 12 shows the difference between the thickness x of the wall and the thickness x1 of the wall in region 25, on an exaggerated scale. The region 25 may be curved inwardly, as shown, or may be parallel to the upper wall 5 of the arch. The reduced wall thickness x1 is not required for the entire region 25. It is sufficient to provide only a thinner wall portion in region 25, for example by compressing the material when the cover D.

The radial width of the U-shaped strip 22 in FIG. 6 to 10, may have about 10% of the outer diameter of the lid D, while the diameter of the upper wall 5 of the bolt may be about 60% of the outer diameter of the lid D.

The embodiment of the lid D, illustrated in fig. 13 and 14 is similar to the embodiment shown in FIG. 6 to 12, the lid being additionally provided with separate projections 5a, regularly distributed on the upper wall 5 of the vault. There are, for example, four distinct oval projections 5a, each having a sign and / or a button which can be pressed at its tip. This is the standard equipment of many caps on the market. The projections 5a are located at a small radial distance from the outer edge of the upper wall 5 of the vault and also at a small radial distance from the central seat 24. In addition, the recesses 3 are cut inwards, so that they can be caught much easier with your fingertips when the lid D needs to be removed from a stack of multiple caps (as shown in Fig. 15).

Each recess 3 may define a lateral shoulder 3a which may serve as a stop during stacking, as shown in FIG. 15, the shoulder 3a resting on the upper wall 5 of the bolt of the next lid D of the stack. Shoulder 3a prevents the lids from locking inside each other, because the stacked lids are in contact with each other mainly in the area where the shoulder 3a rests on the upper wall 5 of the vault, and where the outer supporting walls come in contact with each other. This feature results in a neat and tight stacking from which each lid D can be easily removed. In the embodiment shown, eight grooves are provided 3.

The cover D of FIG. 13 to 15 also presents a centering and guiding projection K (a guiding cone) and the articulation mechanism M for facilitating the closing action.

Fig. 16 and 17 present an easily closed lid, for a double-walled CD container. The double-walled container CD has an inner wall 7 and an outer wall 7c having an air gap between them to provide a thermal insulation effect. Border 10 is formed at the upper end of the inner wall 7. The double-walled container CD is first formed with an angle of the cone a / 2 which continues with the edge 10. During the forming process the upper portion of the inner wall 7 is widened towards outside, so the area

RO 120833 Β1 of opening 9a results where the angle of cone a '/ 2 is less than the angle of cone 1 a / 2, or even equal to zero, and thus the shoulder 7b is formed. The cover D for the double-walled container CD has the projection, already described, of centering and guiding K. In this case, the projection 3 K is formed such that the outer surface 6 is either cylindrical (as illustrated) or has an angle of the cone β / 2 between 0 '(cylindrical) and a value less than 5 cone angle a' / 2. The outer surface 6 or the outer support wall 4 is continued by a downwardly sloping wall portion 4b, so that a 7 shoulder 4a is formed. The portion of the outer surface 6a of the wall portion 4b is inclined with an angle of the cone of a / 2. 9

The bottom of the centering and guiding projection K is formed by the U-shaped strip 22 which extends substantially perpendicular to the central axis of the lid. Diameter 11

D1 of the outer surface 6 essentially corresponds to the diameter D7 of the opening zone 9a in the region of the border 10. in the opening area 9a, inner parts of the inner wall 13 7a of the container and outer parts of the outer supporting wall 4, as well as the portion of wall 4b are presented as being deformed or coming in close contact due to the pressure, when the lid D is completely closed on the container with double walls CD.

in FIG. 16 the lid D is centered on the container with double walls CD, so that the border 17 10 is near the neck 14, underneath. Then the outer surface 6 already touches the inner wall 7a of the container in the opening area 9a for the correct centering and guide 19 of the lid D, when a closing pressure R is applied, for example on the upper wall 5 of the vault (not shown in fig. 16). 21 while the closing pressure forces the coupling 14 over the rim 10, the outer surface 6 guides the lid D. when the U-shaped band 22 is inclined downwards, as previously stated, the outer support wall 4 is displaced inwardly, while the neck 14 extends outward. This facilitates the slight slip of the neck 25 14 over the edge 10 until the position illustrated in FIG. 17. Border 10 is then attached to the outside and the inside. The contact portions of the wall 27 (20 and 20 ') can be compressed. Shoulder 4a is either resting on shoulder 7b or is located at least close to shoulder 7b. A particular contact pressure is reached in the region 29 20 'resulting in an additional sealing effect compared to the sealing effect obtained by the cooperation between the fixing groove 1 and the edge 10, and between the outer support wall 31 4 and the inner portion 7a a the wall of the container.

in FIG. 17, the rigid arched structure of the lid D can even force the inner part 33 of the wall of the container, in a parallel relation, with respect to the outer support wall 4, resulting in a higher holding force and an excellent effect, as well as a noticeable rigidity of the opening portion of the closed CD container.

In addition, the cooperation between shoulders 4a and 7b may result in a stop limitation of 37 closing thus preventing the edge from being deformed too much. The support shoulders 4a, 7b can even hold the curb 10 and the fastening groove 1 under pre-closed conditions characterized by leakage resistance and large cap retention forces D.

Fig. 18 is a sectional view of a lid D closed on a container C with a single wall 41, similar to that of FIG. 5. Border 10 is completely twisted inwards. The groove 1 of the cover D is round in cross-section. Cross hatched areas 43 are areas where contact is strong, such as areas with easily compressed surfaces. In this case, there is a close contact between the fixing groove 1 and the edge 10 over 45 more than 180 ° from the circumference of the edge 10. The outer support wall 4 significantly strengthens the upper opening region against radial deformations. 47

Claims (26)

claims 1. Container of conical shape (C), made especially of paper or cardboard, provided with a lid (D) of plastic material, an opening area (9) of the container (C) being delimited by a wall of the container (7) extending upwardly and outwardly and an outboard (10) projecting outwards, in particular a corrugated edge (11), the lid (D) being formed with a peripheral fixing groove (1) which it is opened on the lower surface of the lid to receive in it the edge (10), the fixing groove (1) having in the lower outer region, at the end, a neck (14) which can extend elasticly, and at the inner part, a surface outer (6) cylindrical or conical of an outer supporting wall (4) belonging to a seat (V) of the lid, which extends circumferentially and is U-shaped in cross-section, a U-shaped band (22) belonging to the seat (V) the lid being and killed under the upper position of the neck (14), the inner supporting wall (23) of the seat (V) being part of the wall of a vault (2) having an upper wall (5) located above the neck and the fixing groove, respectively, characterized by that the recess (V) of the lid is formed with such a depth that it extends slightly downward, beyond the upper position of the neck (14) and has an outer diameter (D1) of the outer surface (6) at the neck (14) , adapted to the inner diameter (D7) of the wall of the container (7) at the level of the rim (10) so that, during the closing operation of the lid (D), the outer surface (6) of the seat (V) of the container functions as a projection (K) centering and guiding the lid, cooperating by sliding contact with the wall of the container (7) at least when the rim (10) passes over the neck (14) inside the fixing groove (1), when a pressure is applied. cLOSING e (R), directed mainly downwards, on the bolt (2). 2. Container according to claim 1, characterized in that the vault (2) and the seat (V) of the lid together constitute a complete articulation mechanism (IVI), continuous in a circumferential direction, for the temporary opening of the fixing groove (1) by dislocation. the outer supporting wall (4) inwardly, while the neck (14) remains fixed to the rim (10) under the action of pressure (R). A container according to claim 1, characterized in that the U-shaped strip (22) is substantially flat and essentially perpendicular to the axis of the lid, and in that the inner support wall (23) extends substantially after a direction parallel to the axis of the lid. 4. Container according to claim 1, characterized in that the centering projection. and guide (K) is formed so that it cooperates, by sliding contact with the wall (7) of the container (7) before the rim (10) reaches the neck (14) at the bottom. Container according to claim 1, characterized in that the outer diameter | (D1) of the outer surface (6) corresponds, at a level corresponding to the upper position! of the neck (14), with at least the inside diameter (D7) of the wall (7) of the container in the area of des-! guides (9), and in that the angles of the cone (a / 2) of the wall of the container (7) and of the outer conical surface (6) are at least approximately equal. 6. Container according to claim 5, characterized in that within the fastening groove (1), the outer diameter (D2) of the outer surface (6) is larger than the inner diameter (D7) of the container wall (7) in the opening area. (9), preferably about 1.5% o to 5% o, and better about 3.5% o. 7. Container according to claim 1, characterized in that the outer surface (6) extends downward, beyond the upper position of the neck (14), with a length (L1) which is at least 2.5 times the height (L). ) of the fixing grooves (1). RO 120833 Β1 8. Container according to claim 1, characterized in that the outer surface 1 (6) extends downward beyond the upper position of the neck (14) by at least one length (L1) which is equal to 3 times the inner height (L). , preferably even 4 times or more than 3 inside height (L) of the fixing groove (1). 9. Container according to claim 1, characterized in that the cone angle (a / 2) 5 is between about 6 'and 12 °, preferably between about 8 * and 10 °. 10. Container according to claim 1, characterized in that the vault (2) has 7 recesses (3) distributed circumferentially, preferably four or eight recesses (3) distributed regularly, having identical sizes and depths, in the transition zone between the upper wall. 9 (5) of the vault, and the inner support wall (23) extending upwards. 11. Container according to claim 10, characterized in that each recess 11 (3) defines a deep area for grasping with the finger, in the inner support wall (23). A container according to claim 10, characterized in that each recess 13 (3) is formed with a lower shoulder (3a) representing a stop for the stacked lids. 13. Container according to claim 1, characterized in that at least 15 is provided a circumferential area (30) of the type of strip, on the outer surface (6) of the outer supporting wall (4) and / or on the wall of the container (7) , said area (30) having a high friction coefficient 17 compared to the vicinity of the area (30). 14. Container according to claim 1, characterized in that the radial thickness 19 (Y) of the rim (10) exceeds the inner radial width (Y1) of the fixing groove (1). 15. Container according to claim 14, characterized in that the radial thickness 21 (Y) of the rim (10) exceeds the value of the inner radial width (Y1) of the fixing groove (1) by about 10% to 20%, preferably by about 15% . 2. 3 16. Container according to claim 14, characterized in that the inner radial width (Y1) of the fixing groove (1) decreases in a direction opposite to the closing direction, 25 at the neck (14) inwards. 17. Plastic cover (D), specially designed for a container (C) of paper 27 or cardboard having an outer edge (10) in the opening area (9), the cover (D) being provided with a fixing groove (1) peripheral, which is opened on the lower surface of the lid 29 for receiving therein the border (10), the fixing groove (1) being continued at the outer lower end by an elastic deformable neck (14), and at the lower end its interior 31 with the outer (6) cylindrical or conical surface of an outer supporting wall (4) of a recess (V) of the lid extending circumferentially, and substantially having a U-shaped cross-section with a a U-shaped strip (22) located below the upper position of the neck (14), the inner supporting wall (23) of the lid housing being part 35 of a wall of a vault (2) including an upper surface (5) located immediately deasupa due to the upper positions of the neck (14) and of the fixing groove (1), characterized in that the housing (V) of the lid is formed with a depth that extends immediately downwards, beyond the upper position of the neck (14), and with an outer diameter (D1) of the outer surface39 (6) and essentially at the upper position of the neck (14) such that the seat (V) defines a centering and guide projection (K) for a slight closure of the lid (D) ) over the rim 41 (10) of the container (C). 18. The lid according to claim 17, characterized in that the vault (2) and the seat 43 (V) together form a continuous articulation mechanism (M) in a circumferential direction for temporarily opening the fixing groove (1) by pulling the outer wall of up-45 holding (4) inwardly, the hinging mechanism (M) being operable during the closing operation mainly by the pressure (R) applied on the upper surface (5) of the bolt 47 to dislodge the vault from the groove fastening (1). RO 120833 Β1 19. The lid according to claim 17, characterized in that the neck (14) consists of circumferential, successive or alternating circumferential recesses (16a, 16b), with greater and smaller depths, formed from the outer surface, preferably with more depressions. deep (16a) being longer in a circumferential direction than shallower (16b). 20. The cover according to claim 17, characterized by a plurality of protruding projections (5a), regularly distributed on the upper wall (5) of the vault. 21. Cap according to claim 17, characterized in that a penetration region (25) with a predetermined size is formed in the upper prices (5) of the vault, the penetration region (25) having a wall thickness (X1), more reduced than the thickness (X) of the upper wall of the vault, at least, and in that the penetration region (25) is formed of cross ribs (26) for introducing a straw, and in that the penetration region (25) is provided as a thin bottom wall of the seat (24) formed in the upper wall (5) of the vault, the bottom being located below the upper wall (5) of the vault, the thickness (XI) of the thin bottom wall being achieved by local compression of material. 22. Cap according to claim 21, characterized in that the recess (24) is located essentially in the center of the upper wall (5) of the vault, and in that the recess (24) has a contour of the wall substantially corresponding to two ellipses. superimposed in equal sizes, the principal axes of which are offset by 90 °, and in that the cutting lines (25) extend along the two main cross axes of the ellipses. 23. Plastic cover (D), specially designed for a double-walled (CD) conical container made of paper or cardboard having an outer edge (10) in the stepped conical opening area (9a), the cover (D) ) being provided with a peripheral fixing groove (1) which is opened on the lower surface of the lid to receive in it the edge (10), the fixing groove (1) being continued at the lower outer end by a deformable neck (14) elastic, and at its lower inner end with outer surface (6), cylindrical or conical of an outer supporting wall (4) of a recess (V) of the cap extending circumferentially, and having substantially a U-shaped in cross-section, with a U-shaped band (22) located below the top of the neck (14), the inner supporting wall (23) of the seat (V) of the lid being part of a wall of a vault (2) including a upper wall (5) located immediately above the upper positions of the neck (14) and of the fixing groove (1), characterized in that the recess (V) of the lid is formed with a depth that extends downward, beyond the upper position of the neck (14), and with an outer diameter (D1) of the outer surface (6), substantially at the level of the upper position of the neck (14), so that the seat (V) defines a centering and guiding projection (K) which cooperates with the stepped conical opening area (9a) of the double-walled container (CD) for easy closure of the lid (D) over the rim (10) 24. The lid according to claim 23, characterized in that the outer surface (6) of the outer support wall (4) is formed with a cone angle value between 0 ° and a value less than the cone angle value of the opening area (9a). ) in stairs. 25. The lid according to claim 23, characterized in that the centering and guiding projection (K) is continued downwards by a downwardly directed step portion (4a, 4b, 6a) to cover by pressing with the wall region (7). ) of the container located under the opening area (9a) in steps. RO 120833 Β1 26. Cone-shaped container (C.CD), made especially of paper or cardboard, provided with a plastic lid (D) closing lid, an opening area (9) of the container (C) being delimited by a wall of the container (7) extending conically upwards and 3 outwards and a border (10) projecting outwards, in particular a corrugated border (11), the lid (D) being formed with a groove of peripheral fastening (1) which is opened on the lower surface 5 of the lid to receive in it the rim (10), the fastening groove (1) having in the lower outer region, at the end, a neck (14) which can extend elastically, and at the inner part a cylindrical or conical outer surface (6) of an outer supporting wall (4) belonging to a recess (V) of the lid, which extends circumferentially and has a U-shaped cross-section 9, a U-shaped tape (22) belonging to the housing (V) layer cue being located below the top position of the neck (14), the inner supporting wall (23) 11 of the seat (V) being part of the wall of a vault (2) having an upper wall (5) located above the neck and the fixing groove respectively , characterized in that the housing (V) of the shell 13 is formed with such a depth that it extends slightly downward beyond the upper position of the neck (14) and has an outer diameter (D1) of the outer surface (6) at the level 15 the neck (14) adapted to the inner diameter (D7) of the wall (7) of the container at the level of the border (10), so that during the operation of closing the lid (D), the outer surface (6) of the container housing (V) acts as a projection (K) for centering and guiding the lid, cooperating by sliding contact with the wall (7) of the container, at least when the rim (10) 19 passes over the neck (14) inside the fixing groove (1), when applicable such a closing pressure (R), directed mainly downwards, on the bolt (2), and in that the projection 21 (K) of the centering and guide and the fixing groove (1) together define an angular zone of opening of the of the container having a rigid structure to prevent radial deformation during opening of the container.