WO2015110339A1

WO2015110339A1 - Container lid, plastic vessel and container comprising a plastic vessel and a container lid, and method for the production thereof

Info

Publication number: WO2015110339A1
Application number: PCT/EP2015/050627
Authority: WO
Inventors: Peter Schneider; Dominik Kalis; Markus Britsch; Andreas Meister
Original assignee: Huber Packaging Group Gmbh
Priority date: 2014-01-21
Filing date: 2015-01-15
Publication date: 2015-07-30
Also published as: DE102014100657A1; EP3097022A1

Abstract

The invention relates to a container lid made of plastic, to a plastic vessel and to methods for producing a plastic lid and a plastic vessel. The container lid has a supporting collar (30), a receiving section (40), a lid wall (32) and a handle (34), wherein the receiving section (40) has a peripheral receiving face (66) for being sealingly received in a receiving opening, wherein the handle (34) is formed on the lid wall (32), and wherein the handle (34) is pivotable between a handling position and a rest position. The plastic vessel has a bottom (16), a jacket (18) and a lid flange (20), which together delimit an interior, wherein the jacket (18) extends between the bottom (16) and the lid flange (20), wherein the lid flange (20) has a receiving opening with a peripheral mating surface (22), in particular for a container lid (14), wherein the lid flange (20) extends inwards from the jacket (18) at least in some sections, and wherein the lid flange (20), the jacket (18) and the bottom (16) are manufactured in one piece.

Description

CONTAINER COVER, PLASTIC FAILURE AND CONTAINER WITH A PLASTIC DAMAGE AND A CONTAINER COVER, AND METHOD FOR

THEIR MANUFACTURE

The invention relates to a container lid made of plastic, a plastic container and a container with a plastic container and a container lid. The invention further relates to a method for producing a plastic lid and a method for producing a plastic container.

Containers for receiving various products are well known in the art. For example, so-called. Patent lid boxes are known with which, inter alia, liquid, pasty, powdery or granulatformige contents can be stored and transported. Patent lidded boxes are usually made of sheet metal material.

Containers or cans can be used for receiving chemical raw, intermediate or end products. These may be, for example, paints, varnishes, paints, adhesives or lubricants. The contents may also be, for example, detergents or cosmetics.

In addition to the known containers or cans made of sheet material containers of plastic material are basically known in the art.

For example, EP 0 144 197 A2 discloses a plastic container with a pot-shaped main body, which consists of plastic material. On the body an annular flange is attached, such as by gluing. The annular flange is used for sealingly receiving a container lid. Accordingly, both the container lid, the annular flange and the base body of the container can be made of plastic and joined together accordingly.

From US 6,588,618 B1, a plastic container with a main body and a joining ring is known, which can be attached to the base body to receive a lid sealing. The main body, the joining ring and the lid can be made of synthetic materials. On the lid, an outer ring is formed, which is partially provided with recesses. In the recesses, a tool, such as a screwdriver, engage to loosen the lid from the ring. More specifically, the ring can be levered out by means of the tool.

Thus, it is well known in the art to manufacture at least individual parts of containers or cans made of plastic materials. However, this is still associated with a certain effort. Furthermore, it has been shown that the handling of plastic containers or plastic lids is in need of improvement.

Against this background, the present invention seeks to provide a plastic lid and a plastic container, which together can form a container, wherein the production of the plastic container and the plastic lid as rational and fast as possible. Furthermore, in particular, the plastic lid should be suitable for repeated opening and closing, without significantly affecting the function, in particular the sealing effect. The plastic lid, the plastic container and containers formed from these should be suitable for the reception, storage, handling and presentation of a variety of contents, such as in the non-food sector.

This object is achieved according to a first aspect of the invention by a container lid made of plastic, in particular an injection-molded plastic lid for a can, having a support collar, a receiving portion, a cover wall and a handle, wherein the receiving portion has a circumferential receiving surface for sealing Receiving in a receiving opening, wherein the handle is integrally formed on the cover wall, and wherein the handle between a handling position and a rest position is pivotable.

The object of the invention is completely solved in this way.

According to the invention, namely, the handle can be made together with the top wall, preferably as an integral part of the container lid, in an injection molding of a plastic material. The handle can in particular be designed as a tab and used to open the container lid, so as to lift the entire container lid of a can. A user can attack the handle in the handling position and release the container lid by pulling on the handle. For this purpose, the handle may have approximately an opening, in particular a circular opening. Alternatively, the handle may have projecting contours, such as lateral arms or the like, to which the user can engage.

The receiving surface of the receiving portion may be formed in particular as a cylindrical surface or slightly conical surface and formed for receiving in a corresponding circular receiving opening. The receiving portion may be between the support collar and the lid wall of the container lid extend. The top wall may, at least in some embodiments, be designed substantially as a flat wall or disk. In the rest position, the handle can fit tightly against the top wall. In the handling position, the handle can be arranged at a certain angle obliquely to the cover wall, so take about an angle between about 60 ° and 120 ° relative to the top wall. The rest position can be generally referred to as a recessed position of the handle. The handling position can generally also be referred to as the exposed position of the handle.

According to a further embodiment, the handle and at least the top wall are integrally formed, wherein preferably the entire container lid is integrally formed of a thermoplastic material.

In this way, the container lid can essentially be manufactured by means of a single manufacturing step, namely by means of an injection molding process, without substantial reworking operations or joining operations being required. In this way, the user with the container lid and the integrated handle for opening the lid, an added value can be provided without this leads to significant additional work in the production.

According to a further embodiment, the handle and the cover wall are connected to each other via a plastic hinge, in particular a film hinge. It is understood that the plastic hinge can be designed as an integral part of the container lid. The plastic hinge, in particular the film hinge, can be deliberately created by weakening the material or weakening the wall thickness in the region of the connection between the handle and the cover wall. On the one hand, film hinges are flexible enough to be moved back and forth between different positions or positions. On the other hand, a sufficiently high strength is given, so that enough train can be transferred, about to open the container lid and apply the forces required for this purpose. This aspect can be further developed in that the plastic hinge is deformed in the rest position of the handle and is located in the handling of the handle substantially in a neutral position.

This can be effected, for example, that the injection molding tool for the container lid is designed such that the handle in the handling position (together with the remaining parts of the container lid) is injected. Accordingly, the term "neutral position" may indicate that no significant stresses or deformations occur in the plastic hinge. If the handle is transferred to the rest position, deformations can occur, in particular in the area of the plastic hinge, which can be accompanied, for example, by increased bending stresses. It may be advantageous to manufacture the container lid with the handle in the handling position, since in this way the removal of the handle and the formation of the plastic hinge, in particular the film hinge, can be simplified. For this purpose, the handle can be pivoted in the production about 90 ° relative to the cover wall.

According to a further embodiment, the container lid further comprises at least one locking element for securing the position of the handle in the rest position.

The locking element may be formed for example as a latching hook or snap hook. It is understood that two or more locking elements can be formed on the container lid. In this way, the handle can be securely held in the rest position, so as not to adversely affect transport operations, filling operations, stacking operations or the like. For transfer from the rest position into the handling position, the user can release the handle from the at least one latching element.

According to a further embodiment, the receiving surface is provided with an at least partially circumferential bead for securing the position of the container lid in the assembled state. The bead may in particular be designed to engage under or engage behind a mating contour on the receiving opening in the vessel or the can. It is conceivable that the receiving surface comes sealingly against a mating surface to the plant. Accordingly, the bead does not primarily contribute to the improvement of the sealing effect. Rather, the bead can contribute to increasing the dissolving forces. In this way, a defined release force can result in the container lid. The seat of the container lid can be secured at least partially positively.

It is understood that instead of an at least partially circumferential bead and a plurality of locking elements may be provided on the receiving surface. These may be referred to, for example, as bead portions, locking cams or the like. It is advantageous if the bead is designed such that the container lid can be repeatedly opened and closed safely and sealed.

According to a development of the aforementioned embodiment, the bead is interrupted in a release portion of the receiving surface, wherein the handle is formed in a portion adjacent to the release portion of the top wall.

In this way, the opening of the container lid can be significantly simplified. Namely, by the bead is interrupted in the region of the receiving surface, which is first released from the corresponding mating contour of the vessel when opening, the opening can be defined and carried out with reduced effort. Excessive plastic deformation on the container lid can be avoided. Nevertheless, the bead, even if it is interrupted in sections, can ensure a secure reception of the container lid.

According to a further embodiment, the circumferential support collar on at least one receiving recess, in particular at least two opposing and aligned receiving recesses, wherein the at least one receiving recess is adapted to a dose circumference. The at least one receiving recess may be formed on the surface of the support collar, which faces away from the can or the vessel in the assembled state. The at least one receiving recess may be, for example, a concave receiving recess, which is designed, for example, as a countersink or indentation. The at least one receiving recess can provide a defined receiving surface for a further container or a further can. In other words, a container or a can pivoted about 90 ° and horizontally oriented on the top of another container or another can be arranged defined. This can be used for purposes of product presentation.

There are known containers or cans, such as paint containers, in which the container lid is used to specify the content more accurately. This can be a color information about the exact color. Thus, it would be advantageous to present this information clearly visible to a customer. If the containers or cans were merely stacked in the normal way, the customer would have to remove a can from a stack with a high stack once to see what content is exactly included therein. If now about the topmost box of a stack can be presented rotated by 90 °, the prospective buyer or user the information can be displayed clearly visible.

The aforementioned aspect can be further developed in that the circumferential support collar is wave-shaped and has mutually alternating receiving recesses and elevations. In this way, a plurality of support positions can be provided without the risk that a correspondingly received can (side) can roll away.

It is understood that the elevations and receiving recesses of the support collar are designed such that at least the elevations protrude in the mounted state of the container lid over an upper end edge of the container, so that a receiving position for a can or a container is securely defined. The said designs are particularly advantageous when the containers are cylindrical. According to a further aspect, the object of the invention by a plastic container, in particular an injection-molded plastic can, solved, having a bottom, a shell and a cover flange, which together define an interior, wherein the jacket between the bottom and the cover flange wherein the cover flange having a receiving opening with a circumferential mating surface, in particular for a container lid according to one of the aforementioned aspects, wherein the cover flange extends at least partially from the shell inwardly, and wherein the cover flange, the jacket and the bottom are made in one piece ,

Also in this way the object of the invention is completely solved.

In accordance with the invention, the plastic container can now be produced essentially in only one production step, so that further steps for the joining of the jacket to the bottom or to the cover flange are unnecessary. There is no need for separate joining steps, such as welding, gluing or the like. The production of the plastic vessel can be done overall with shorter process times. The total cost of manufacturing can be reduced. Extensive monitoring of the joining processes can be avoided.

The mating surface may be configured to sealingly receive the receiving surface of the container lid. The container lid may be received under slight bias on the plastic vessel, in particular at its mating surface. In particular, the lid flange may provide an annular opening defined by the mating surface. The cover flange can also be referred to as a receiving ring which, starting from the jacket, extends at least in sections radially inwards and opens into the circumferential mating surface.

According to a further embodiment, the bottom, the shell and the cover flange are integrally made of a thermoplastic material, wherein the cover flange is at least partially undercut designed. If both the bottom and the cover flange are integrally formed with the shell, the design of the cover flange is usually associated with undercut areas that are not easily demolded by the opening defined by the cover flange through. However, such geometries can be made if special precautions are taken in the injection molding tools. By way of example, the injection molding tool can have at least one folding core or drop core which forms the undercut geometry of the cover flange. When Entformvorgang, so after spraying the contour of the plastic vessel, such a folding core or case core can be first disengaged to release the undercut contour. Thereafter, the core can be removed through the opening of the cover flange. In other words, the core may have at least a first configuration in which the undercut geometry is imaged by the core, and a second configuration in which the core has a reduced cross-sectional profile, so that demolding of the core is possible.

According to a further embodiment, the cover flange has an offset to the jacket region offset, which is offset from an upper end edge of the plastic vessel in the direction of the ground, wherein the offset region merges into an inner guide wall, on which the circumferential mating surface is formed. The offset region can be designed approximately as an annular surface. The upper end edge of the plastic vessel is formed on the side facing away from the bottom of the vessel. The offset region can pass directly or indirectly into the inner guide wall.

The above-mentioned embodiment can be further developed in that the offset region has a plurality of ribs, which are oriented in particular parallel to a main demolding. In particular, the ribs can extend radially from the jacket towards the inner guide wall. The ribs can give the cover flange increased rigidity. In this way, the lid can be added even more defined on the cover flange. The seal can be further improved. It is basically conceivable to arrange the ribs on an upper side of the offset region. In this way, the ribs can be easily removed from the mold. Alternatively or additionally, however, it is also conceivable to arrange the ribs below the offset region, that is to say in the interior of the plastic vessel. In this configuration, the folding core or drop core, which images undercut areas of the cover flange, can also be used to design the ribs. This variant would have the advantage that the ribs are invisible from the outside.

According to a further embodiment of the plastic vessel, the bottom of a lower end edge of the plastic vessel is offset inwardly, wherein the bottom in particular has at least one stiffening bead. This measure can improve the stackability of the plastic vessel. The lower end edge is the end edge, which is formed at the upper end edge facing away from the end of the plastic vessel. The at least one stiffening bead can be designed approximately as an offset surface in the ground. In principle, a plurality of stiffening ribs can also be embodied on the bottom.

It may also be advantageous if one of the upper end edge and the lower end edge has an expansion which is adapted to the other of the upper end edge and the lower end edge. In this way, a plurality of superimposed plastic containers (or containers or cans) can be stacked defined in one another. The risk of tipping or falling over the stack can be significantly reduced.

The object of the invention is further achieved according to a further aspect by a container for receiving liquid, pasty or pourable products, wherein the container is formed using a plastic vessel according to one of the above aspects and a plastic lid according to one of the above aspects , Also in this way the object of the invention is completely solved. In this way, namely, a completely or substantially completely made of plastic container may be formed, which is compatible in terms of its interfaces and external dimensions with known containers made of sheet materials. The container can also be generally referred to as a box. The container may basically have a cylindrical shape. However, it is also conceivable container with a cross section that deviates from a circular shape. Together with the contents of the container can form a so-called. Container. The contents may generally be formed as at least partially flowable or pourable contents. Bulk solids may include powders, granules or the like.

It is particularly preferred if at least the plastic container or the plastic lid is adapted to substitute known metal containers or known metal lid. In this way, a plastic container with a metal lid or a plastic lid could be combined with a metal container. In particular, a compatibility with components so-called. Patent lid boxes is conceivable. In particular, the plastic lid provided with the handle for opening could be used in a preferred manner also with sheet metal containers or tin cans. It is therefore of particular advantage if the "interface" between the plastic vessel and the plastic lid is designed such that a compatibility with the corresponding interfaces of metal vessels (sheet metal vessels) and metal lids (sheet metal lids) is ensured. This may relate in particular to the design and design of the mating surface on the plastic vessel and the receiving surface on the plastic lid.

The object of the invention is further achieved by a method for producing a plastic vessel, comprising the following steps:

Providing an injection mold with at least one core or folding core,

Feeding a plastic injection molding compound to the injection mold,

Injection molding of the plastic container, comprising integral production of a base, a jacket and a cover flange, wherein the jacket extends between the base and the cover flange, wherein the cover flange has a receiving opening with a circumferential passport surface for a container lid, and wherein the cover flange extends at least in sections, starting from the jacket inwardly, and

- Removing the plastic vessel, comprising transferring the incident core or Faltkernes in a Faltkonfiguration to release an undercut geometry of the cover flange.

Also in this way the object of the invention is completely solved.

According to a further aspect, the object of the invention is achieved by a method for producing a plastic lid for a can, comprising the following steps:

Providing an injection mold which images a support collar, a receiving section, a cover wall and a handle of the plastic cover, the receiving section having a peripheral receiving surface for sealingly receiving in a receiving opening,

Feeding a plastic injection molding compound to the injection mold,

Injection molding of the plastic cover, wherein the handle is formed in a handling position on the cover wall,

- removing the plastic lid, and

- Transferring the handle from the handling position in a rest position, in particular locking the handle on the top wall. Also in this way the object of the invention is completely solved.

It is understood that the methods can be suitably combined to form a container which consists essentially of plastic. Preferably, the container is designed as a resealable container.

It is understood that the method for producing the plastic container and the method for producing the plastic lid can be further developed analogous to the embodiments of the above-described plastic container or the above-described plastic lid.

It is understood that the features of the invention mentioned above and those yet to be explained can be used not only in the respectively specified combination but also in other combinations or alone, without departing from the scope of the present invention.

Further features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings. Show it:

1 is a perspective view of a container with a vessel and a lid according to various of the aforementioned embodiments, in a closed state.

FIG. 2 shows a perspective partial view of the container according to FIG. 1 in an opened state; FIG.

Fig. 3 is a broken side sectional view of the container of FIG. 2; 4 is an enlarged partial cross-sectional side view of a vessel in the region of a cover flange, on which a container lid is sealingly received;

Fig. 5 is a sectional side partial view of two stacked one above the other

Container lid, which may correspond approximately to the container lid of FIG. 4;

Fig. 6 is a plan view of the container approximately according to Fig. 1;

FIG. 7 is a partial sectional view of the lid portion of the container of FIG. 6 in a longitudinal direction along the line VII-VII in FIG. 6; FIG.

Figure 8 is a partial side sectional view of the lid portion of the container of Figure 6 taken along the line VIII-VIII in Figure 6, wherein a further container is stacked.

9 is a perspective view of a container lid, opposite to the

Container lid according to Figures 1 and 2 is modified.

10 is a perspective, partially broken view of two containers with a container lid according to FIG 9, wherein a first container relative to a second container pivoted by 90 ° is added to the container lid defined;

Fig. 11 is a schematic, highly simplified block diagram illustrating a method of manufacturing a plastic vessel; and

Fig. 12 is a schematic, highly simplified block diagram for illustrating a method of manufacturing a plastic lid. Fig. 1 shows a perspective view of a container, which is generally designated 10. The container 10 may form a container together with a filling. It is preferred if the container 10 is designed as a resealable container 10. It is further preferred if the container 10 can be opened without tools.

Preferably, the container 10 from a vessel or a can (hereinafter referred to as plastic can) 12 and a container lid 14, in particular a plastic lid, be formed. The container 10 is preferably manufactured in one piece in an injection molding process. Fig. 1 illustrates a closed or assembled state of the container 10. Fig. 2 illustrates an open state of the container 10, wherein the container lid 14 is released from the plastic can 12. The container 10 may be formed as a cylindrical container with a circular cross-section. It is understood that other cross sections are conceivable, such as oval cross sections, square cross sections and the like. However, it is preferred if at least the container lid 14 is configured substantially circular or disc-shaped.

Preferably, at least the plastic can 12 or the container lid 14 is made of thermoplastic materials. It is conceivable, for example, a production of polypropylene or a comparable thermoplastic. It is conceivable to provide the selected plastic material with admixtures in order to produce desired material properties. This can include, for example, ensuring a barrier effect against chemically aggressive substances. Furthermore, it is conceivable to add substances in order to be able to produce an antistatic behavior of the plastic can 12 or of the container lid 14. Surface coatings are also conceivable for the targeted production and influencing of material properties. Plastic materials, in particular plastic materials suitable for processing by means of injection molding, can ensure a great variety in terms of their properties, so that the materials can be selected or adapted in accordance with currently required properties. Polypropylene may be referred to as a suitable material, since there is a stability to a variety of conceivable contents. For example, polypropylene is resistant to fats and a variety of organic solvents. Also, a good resistance to non-oxidizing acids and alkalis is given. Polypropylene is also suitable for use in the foodstuffs sector or in the pharmaceutical sector. It is essentially odorless and physiologically harmless. However, polypropylene has sufficient (mechanical) strength so that sufficient rigidity can be imparted to a container made at least in part of polypropylene. In this way, the stackability of the container 10 is ensured. It will be understood that the thermoplastic materials suitable for use may further include strength enhancing additives. These may be, for example, fibrous fillers, such as glass fibers, aramid fibers, Kevlar fibers or carbon fibers.

For use in the container 10 suitable plastic materials may also be suitable for printing or other methods of decorating. In this way, the container 10 can be made ready for sale and visually appealing with little additional effort.

Conventional container sizes in patent lidded boxes have a nominal volume of less than 50 ml up to several liters. Accordingly, typical container diameters may range from less than 50 mm to 200 mm or more. It is preferred to cover with the container 10 at least similar orders of magnitude.

The plastic can 12 has a bottom 16, a jacket 18 and a cover flange 20, cf. Also Fig. 3. The plastic can 12 is preferably manufactured in one piece by means of an injection molding process. In other words, the bottom 16, the shell 18, and the lid flange 20 may be integrally formed without the need for separate steps for joining components. The bottom 16 may be designed essentially flat, so extend approximately substantially horizontally. The jacket 18 preferably extends as a substantially vertically extending profile. The jacket 18 may be formed, for example, cylindrical, in particular almost ideal cylindrical. This may include that on the jacket 18 - in the vertical direction - as possible no Entformschrägen are provided. In this way, the plastic can 12 can have good compatibility with known cans made of sheet materials. Thus, both can types can be processed, filled and handled in about the same production facilities.

The lid flange 20 is formed at an upper end of the plastic can 12 and has a mating surface 22 for receiving the container lid 14. At the cover flange 20, a plurality of ribs 24 may be formed, see. in particular also FIG. 6. The ribs 24 can give the cover flange 20 increased rigidity. In this way, even greater accuracy and dimensional accuracy of the mating surface 22 can be ensured. This can result in an increased sealing effect and increased leakage resistance.

The container lid 14 has a support collar 30, which can also be referred to as a support ring. When container lid 14, a cover wall 32 is further provided, which may be designed substantially disc-shaped. At the top wall 32, a handle 34 is formed. The handle 34 can be pivoted between a handling position (FIG. 2) and a rest position (FIG. 1), cf. also an arrow designated 28 in FIG. 1. The handle 34 may also be referred to as Handhabelasche or handle eye. The handle 34 is designed as an integral part of the container lid 14 integral with this. Preferably, the handle is connected via a plastic hinge, in particular via a film hinge 36, with the top wall 32.

Further, it is advantageous to connect the handle 34 in a region of the top wall 32, which is the peripheral support collar 30 adjacent. In this way, the container lid 14 when opening by pulling on the handle 34 are first released in this area of the mating surface 22 of the cover flange 20 of the plastic can 12. If the seat of the container lid 14 is released there, can the complete release of the container lid 14 done with manageable effort. To secure the position of rest (FIG. 1), at least one locking element 38 can be formed on the cover wall 32, which is designed to latch the handle 34 in the rest position. It may be in the at least one locking element 38 is about a latching hook, a snap hook or the like. On the container lid 14, a receiving portion 40 is further formed, which may extend for example between the support collar 30 and the lid wall 32. The receiving portion 40 may be configured to be received on the mating surface 22 of the lid flange.

Fig. 3 shows a side sectional view of the illustrated with reference to FIGS. 1 and 2 container 10, wherein the plastic can 12 is shown partially broken. On the jacket 18 of the plastic can 12, an upper end edge 42 and a lower end edge 44 is formed. The lower end edge 44 faces a bottom or a bearing surface in a conventional, vertical orientation of the container 10. The upper end edge 42 is formed at an opposite end of the plastic can 12. The upper end edge 42 may protrude beyond the cover flange 20, in particular via its mating surface 22. In this way, a container lid 14 accommodated on the cover flange 20 can be completely or almost completely integrated into the (lateral) silhouette of the plastic container 12. The bottom 16 may be offset from the lower end edge 44 toward the interior of the container. Further, in the bottom 16, a bead or a set piece 46 may be formed. In this way, the bottom 16 can be given a higher rigidity.

At the lower end edge 44, a shoulder 48 may be configured, which may also be referred to as a taper. A synopsis of Fig. 3 with Fig. 8 can be removed, that in this way a vertical stacking of the plastic cans 12 is ensured. This is possible regardless of whether a container lid 14 is mounted or not. At the upper end edge 42, a widening 50 may be provided, which corresponds to the shoulder 48 at the lower end edge 44, so that they can interlock. It is understood that conversely it is also conceivable that the upper end edge 42 with a paragraph or a taper is provided and thus can engage in a corresponding widening at the lower end edge 44 (not shown in the drawing).

In the upper region of the plastic can 12, a base 52 may be further formed, which is offset from the upper end edge 42, see. FIG. 4. In the stacked state, the lower end edge 44 can contact the base 52 of another plastic can 12.

Referring again to Fig. 3, a possible embodiment of the handle 34 is explained in more detail. The handle 34 has, for example, a recess 64, which provides a handling opening. The user can exert tensile forces on the handle 34 via the recess 64 and thus release the container lid 14 from the plastic container 12. As an alternative to the recess 64, the handle 34 could also have lateral entrainment contours that allow it to be grasped and taken away by the user. For example, the handle 34 could also have lateral extension arms, that is to say be designed in a T-shaped manner. Other versions of the handle 34 are conceivable.

Fig. 4 shows an enlarged partial section through the container 10 of FIG. 3 in the region of the cover flange 20, but in the joined state. The cover flange 20 may extend radially inwardly at least in sections starting from the jacket 18. The cover flange 20 may include an offset portion 54, which may also be referred to as an offset ring. The offset portion 54 is offset from the upper end edge 42 toward the interior of the container 10. The offset region 52 may be formed on the jacket 18. The offset region 54 can, for example, pass over a cone 56 into a guide wall 60 on which the mating surface 22 is formed, cf. Also, Fig. 3. In particular, with the offset portion 54 and the cone 56, the cover flange 20 may have areas that are not easily demoulded in a main release direction, see. an arrow indicated at 58 in Fig. 3. The Hauptentformrichtung 58 substantially coincides with a vertical direction. The main demolding device 58 may extend substantially parallel to a longitudinal axis 52 of the container 10, which may also be referred to as the axis of symmetry or axis of rotation. Since the bottom 16 and the jacket 18 are designed in one piece and essentially pot-shaped or cup-shaped, undercut regions of the cover flange 20 can not simply be removed from the mold "downwards". However, it is conceivable to demould these areas with a folding core or core through the receiving opening, which is formed by the mating surface 22.

On the receiving portion 40 of the container lid 14, a circumferential receiving surface 66 is formed, which is designed for sealing reception on the mating surface 22 of the guide wall 60 of the cover flange 20, cf. FIG. 3 again shows the design illustrated with reference to FIG. 4 that the receiving portion 40 and the guide wall 60 or the receiving surface 66 and the mating surface 22 can be made with an oversize (shown as penetration in FIG. 3). By the receiving surface 66 has a slightly larger diameter than the mating surface 22, the container lid 14 can be securely and tightly received with a defined bias on the cover flange 20 of the plastic can 12. Preferably, an at least partially circumferential bead 68 is further formed on the receiving portion 40 of the container lid 14, which engages behind the guide wall 60 of the cover flange 20 at least in sections, cf. This can cause an additional assurance of the seat of the container lid 14 on the plastic can 12. In particular, the bead 68 can effect an at least partially positive locking of the container lid 14. The bead 68 and the support collar 30 of the container lid 14, together with the guide wall 60 of the cover flange 20, can effect a defined axial positional fixation between the plastic can 12 and the container lid 14 with respect to the longitudinal axis 62.

It can be seen from the representation according to FIG. 5 that a plurality of container lids 14 - 1, 14 - 2 can be stacked on top of one another. For this purpose, the container lid 14, a stacking surface 70 is formed, which is adjacent to the support collar 30 as an offset surface. Further, at the transition between the receiving portion 40 and the lid wall 32, a shoulder 72 is formed, which can also be referred to as a taper. In the area of paragraph 72, the container lid 14-1 may be at least partially inserted into the container lid 14-2 and at the stacking surface 70 for Come to rest. This allows a space-saving, defined storage of a plurality of container lids 14th

FIG. 6 illustrates a plan view of the container 10 illustrated with reference to FIGS. 1 to 5. It can be seen that a plurality of ribs 24 may be provided on the lid flange 20 of the plastic can 12. By way of example, these may be eight ribs 24. The ribs 24 can be distributed at the same (angular) distance on the circumference of the flange 20 in order to give it an increased rigidity. Fig. 8 illustrates in this context a section through the container 10, wherein also one of the ribs 24 is shown in section. The ribs 24 are mounted on top of the cover flange 20. In principle, it would also be conceivable to arrange the ribs 24 on an underside of the cover flange 20, that is to say in the interior of the plastic can 12.

Fig. 7 illustrates a section through the container 10, wherein the handle 34 is in the rest position or rest position. To secure the rest position of the handle, this can be latched by means of at least one latching element 38 on the top wall 32. By way of example, two latching elements 38 may be provided, cf. also Fig. 6. The at least one locking element 38 may be a

Snap contour 74 have that the handle 34 can engage around at least in sections for securing the position. According to the embodiment illustrated with reference to FIG. 7, the two latching elements 38 can cooperate with the recess 64 of the handle 34 in order to lock them securely in the rest position. Preferably, the at least one latching element 38 is designed to ensure a repeatable latching of the handle 34.

A synopsis of FIGS. 7 and 8 can also be seen that a (vertical) stackability of multiple containers 10 is ensured when the handle 34 is in the locked position. Thus, even if the stacked plastic cans 12-1, 12-2 are at least partially stacked together, still a sufficiently large clearance between the bottom 16 of a can 12-1 and the container lid 14 of the other box 12-2 guaranteed. In the latching position, the handle 34 does not protrude (vertically) beyond the silhouette of the container lid 14. In Fig. 6, a double arrow indicated at 76 indicates an area on the periphery of the receiving portion 40 of the container lid 14 in which it may be advantageous to break the bead 68 (see Fig. 4 and Fig. 9). The region 76 may also be referred to as the release section 76. FIG. 8 shows a section in the region of the release section 76. The receiving section 40 has no bead 68 formed in this region. The release portion 76 may describe the region or peripheral portion of the container lid 14, in which the handle 34 is formed near the support collar 30 or near the receiving portion 40 to the lid wall 32, see. the film hinge 36 in Fig. 8. When opening the container lid 14 by means of the handle 34 is usually carried out a separation from the cover flange 20 initially in the region of the release portion 76. Dispensing with the bead 68 in this area can significantly reduce the forces required to disengage. Incidentally, however, a high release safety of the container lid 14 is still ensured since the bead 68 can continue to be formed in the predominant region of the circumference of the container lid 14.

A further advantageous embodiment, which relates in particular to the container lid 14, is illustrated with reference to FIGS. 9 and 10. Fig. 9 illustrates a container lid 14 having a specially designed support collar 30a. The support collar 30a has a wave-shaped annular surface. In particular, the support collar 30a may have a plurality of mutually alternating receiving recesses 80 and elevations 82. In particular, the receiving recesses 80 may be formed as concave receiving recesses 80. The receiving recesses 80 may include curved surfaces 84. The receiving recesses 80 may be radially aligned in pairs. The receiving recesses 80 may be adapted to an outer periphery of the plastic can 12 in the region of the jacket 18. In other words, for example, the arc surface 84 may have a radius that is adapted to a radius of the cylindrical surface of the shell 18.

Fig. 10 illustrates an advantageous use of this particular design of the support collar 30a. Usually, a plurality of containers 10-1, 10-2 can be stacked one above the other (vertically) with the same orientation, cf. Also, Fig. 8. However, this can make it difficult for a user the clear view of the container lid 14. On the container lid 14, in particular on the cover wall 32, can however, various information may be appropriate, such as describing the contents of the container 10. It would therefore be advantageous to stack at least one container 10 of a stack of containers 10 with orientation (tilted horizontally) of 90 ° on another container 10. This is now made possible by the special design of the support collar 30a of the container lid 14 as shown in FIG. If the "wave contour" of the support collar 30a extends at least partially (vertically) beyond the (lateral) silhouette of the container 10-2, the container 10-1 can be arranged on the container with a horizontal orientation (ie transversely to the container 10'2). The position of the container 10-1 is sufficiently secured. A lateral rolling can be avoided. It is understood that the type of stacking illustrated with reference to FIGS. 9 and 10 can in principle already be achieved if only an aligned pair of receiving recesses 80 is formed on the support collar 30a of the container lid 14. However, the shown configuration with a plurality of receiving recesses 80 allows a more flexible orientation of the received container 10-1.

FIG. 11 illustrates, by means of a schematic, highly simplified block diagram, a method for producing a plastic container, in particular a plastic container, according to at least some of the aspects and configurations described above.

In a first step 100, an injection mold having at least one incidence core or folded core is provided. An incident core or folding core allows the creation of undercut contours. In this way, the plastic container can be made in one piece. It may be followed by a further step 102, in which a selected plastic injection molding compound is supplied to the injection mold.

In a further step 104, the injection molding process for producing the plastic vessel can take place. The injection molding process may include integral, one-piece manufacture of a bottom, a shell, and a top flange. At the cover flange, a receiving opening with a circumferential mating surface for a container lid can be formed. The cover flange may extend at least in sections, starting from the jacket inwards, so be at least partially formed undercut. It may be followed by a step 106, which includes a demolding of the plastic vessel. The demolding of the plastic container may include transferring the donut core or collapsible core into a folded configuration. In this way, the undercut geometry of the cover flange can be released. A demolding of the plastic vessel is possible.

Fig. 12 illustrates, by way of a schematic, highly simplified block diagram, a method of manufacturing a plastic lid for a can. The method includes a first step 150 that includes providing an injection mold. The injection mold can image a support collar, a receiving section, a cover wall and a handle of the plastic cover. Furthermore, a circumferential receiving surface for sealing reception in a receiving opening of a can or a vessel can be imaged in the receiving portion.

It may be followed by a step 152, in which a plastic injection molding compound of the injection mold is supplied. In a further step 154, the injection molding of the plastic lid can take place. In particular, the step 154 may include molding the handle to the lid wall, wherein the handle is generated in the handling position. In this way, the handle can be made together and in one piece with the other components of the plastic lid.

It may be followed by a step 156, which includes a demolding of the plastic lid. In a further step 158, the handle of the plastic lid can be moved or transferred from the handling position to a rest position. This may in particular include a latching of the handle on the cover wall of the plastic lid. The transfer of the handle can be done manually or automatically.

Claims

claims

1 . Container lid made of plastic, in particular injection-molded plastic lid for a can (10), which has a support collar (30), a receiving portion (40), a lid wall (32) and a handle (34), wherein the receiving portion (40) has a circumferential receiving surface (30). 66) for sealingly receiving in a receiving opening, wherein the handle (34) is integrally formed on the cover wall (32), and wherein the handle (34) between a handling position and a rest position is pivotable.

2. Container lid (14) according to claim 1, wherein the handle (34) and at least the lid wall (32) are integrally formed, and wherein preferably the entire container lid (14) is integrally formed of a thermoplastic material.

3. Container lid (14) according to claim 1 or 2, wherein the handle (34) and the cover wall (32) via a plastic hinge (36), in particular a film hinge, are interconnected.

4. Container lid (14) according to claim 3, wherein the plastic hinge (36) in the rest position of the handle (34) is deformed and in the handling position of the handle (34) is substantially in a neutral position.

5. Container lid (14) according to one of the preceding claims, wherein the

Container lid (14) further comprises at least one locking element (38) for securing the position of the handle (34) in the rest position.

6. Container lid (14) according to one of the preceding claims, wherein the

Receiving surface (66) is provided with an at least partially circumferential bead (68) for securing the position of the container lid (14) in the joined state.

7. A container lid (14) according to claim 6, wherein the bead (68) in a release portion (76) of the receiving surface (66) is interrupted, and wherein the handle (34) in an area adjacent the release portion (76) to the top wall ( 32) is formed.

8. Container lid (14) according to one of the preceding claims, wherein the

circumferential support collar (30) has at least one receiving recess (80), in particular at least two opposing and aligned receiving recesses (80), and wherein the at least one receiving recess (80) is particularly adapted to a dose circumference.

9. Container lid (14) according to claim 8, wherein the peripheral support collar (30) is designed wave-like and having mutually alternating receiving recesses (80) and elevations (82).

10. plastic vessel, in particular injection-molded plastic can, which has a bottom (16), a jacket (18) and a cover flange (20) which together define an interior space, wherein the jacket (18) between the bottom (16) and the cover flange (20), wherein the cover flange (20) has a receiving opening with a circumferential mating surface (22) for a container lid (14), in particular according to one of the preceding claims, wherein the lid flange (20) extends at least in sections starting from the jacket (18 ), and wherein the cover flange (20), the jacket (18) and the bottom (16) are made in one piece.

1 1. Plastic container (12) according to claim 10, wherein the bottom (16), the jacket (18) and the cover flange (20) are integrally made of a thermoplastic material, and wherein the cover flange (20) is at least partially undercut designed.

12. plastic vessel (12) according to claim 10 or 1 1, wherein the cover flange (20) to the jacket (18) connected to the offset region (54), the opposite is displaced over an upper end edge (42) of the plastic container (12) towards the bottom (16), and wherein the offset portion (54) merges into an inner guide wall (60) on which the circumferential mating surface (22) is formed.

13. plastic vessel (12) according to claim 12, wherein the offset region (54) a

A plurality of ribs (24), which are oriented in particular parallel to a Hauptent- formungsrichtung (58).

14. plastic vessel (12) according to any one of claims 10 to 13, wherein the bottom (16) of a lower end edge (44) of the plastic vessel (12) is offset inwardly and in particular at least one stiffening bead (46).

15. Plastic vessel (12) according to claims 12 to 14, wherein one of the upper

End edge (42) and the lower end edge (44) has a widening (50), which is adapted to the other.

16. A container for holding liquid, pasty or pourable products, with a plastic container (12) according to any one of claims 10 to 15, and with a plastic lid (14) according to any one of claims 1 to 9.

17. A method for producing a plastic container (12), comprising the following steps:

Providing an injection mold having at least one core or folding core,

Supplying a plastic injection molding compound to the injection mold,

Injection molding the plastic container (12) comprising integral manufacture of a bottom (16), a shell (18) and a top flange (20), the shell (18) extending between the bottom (16) and the top flange (20) the lid flange (20) has a receiving opening with a circumferential mating surface (22) for a container lid (14), and wherein the lid flange (20) extends at least in sections starting from the jacket (18) inwards, and

Dismantling the plastic vessel (12), comprising transferring the incident core or folding core into a folding configuration for releasing an undercut geometry of the cover flange (20).

Method for producing a plastic lid (14) for a can, in particular produced according to claim 17, comprising the following steps:

Providing an injection mold which images a support collar (30), a receiving portion (40), a cover wall (32) and a handle (34) of the plastic cover, wherein the receiving portion (40) has a circumferential receiving surface (66) for sealingly receiving in a receiving opening having,

Supplying a plastic injection molding compound to the injection mold,

Injection molding of the plastic cover (14), wherein the handle (34) is formed in a handling position on the cover wall (32),

Removing the plastic lid (14), and

Transferring the handle (34) from the handling position into a rest position, in particular latching of the handle (34) on the cover wall (32).