CN107000882A - Plastic containers with sealable container port - Google Patents

Abstract

A plastic container (1) is described which has a container body (2) and a container neck (4) with a container opening (5) which can be closed by a sealing film. The container opening (5) is bordered by a closed, circumferential opening surface (8) which extends inwardly from the outer surface (9) of the container neck (3) to the opening edge (7). Two or more closed circumferential welding ribs (10, 10') are provided on the port face (8), projecting substantially axially from the port face (8), radially to each other Spaced apart and manufactured in blow molding.

Description

Plastic container with sealable container opening

technical field

The invention relates to a plastic container with a sealable container opening according to the preamble of claim 1 .

Background technique

The hitherto usual containers of tin or colored iron, of glass or also of ceramics are increasingly being replaced by containers of plastic. Recently, plastic containers are mainly used for the packaging of fluid substances, for example, in housekeeping, agriculture, industry and commerce. Low weight and low costs are of course very important in these cases. The application of recyclable plastic materials in its manufacture and an overall more beneficial overall energy balance also contribute to the boost in user acceptance of plastic containers.

Single-layer or multi-layer plastic containers are usually produced in so-called extrusion blow molding, especially in tube blow molding. Extrusion blow molding machines for extrusion blow molding usually have one or more extruders for delivering the desired plastic material. The outlet of the extruder is connected to an extrusion head, on the outlet nozzle of which, preferably with an adjustable opening size, the extruded hose exits. Extruded plastic hoses can be of single-layer or multi-layer construction. The hose, which exits continuously or approximately continuously from the outlet nozzle, is delivered onto the blow molding tool arrangement and is inflated by overpressure by means of the blow core which moves into the mold cavity. Afterwards, the inflated plastic container is ejected from the mold cavity.

Plastic containers made of polyethylene terephthalate (PET) or similar materials are usually produced in the so-called stretch blow molding process. In this case, the preform is first produced in an injection mold in an injection molding method. More recently, it has also been proposed to use extrusion or also extrusion blow molding for the production of preforms. The preform has an essentially elongate preform body and is formed closed at one longitudinal end of the preform. A neck section is connected to the other end of the preform body, said neck section being provided with a pouring opening. The neck section already has the subsequent shape of the bottleneck. A threaded section or a similar projection for fastening the closure is therefore usually already formed on the outside of the neck section. A so-called snap ring is usually also provided on the neck section, which protrudes radially from the circumference. For plastic containers stretch-blow molded from preforms, the snap ring is used as a support for a detachable securing strap for a screw-on screw closure; or in oil bottles etc., the snap ring is used For fixing the lower part of commonly used hinged closures. In most known preforms, the preform body and the neck section are separated from each other by a so-called support ring. The support ring protrudes radially and is used for transporting the preforms or plastic containers produced from them and for supporting the preforms on the mold or the plastic containers when closed.

The preform is demoulded after its production and can be reprocessed immediately while still hot in the one-stage stretch blow molding process or cooled and Temporary storage for spatially and/or temporally separated reprocessing on the stretch blow molding system. For this purpose, the preforms are optionally pretreated, that is to say subjected to temperature changes, before further processing in the stretch blow molding system. Afterwards, the preform is introduced into a blow mold of a stretch blow molding plant. In blow molding, the preform is finally inflated with a gas blown in at an overpressure, usually air, in conformity with the mold cavity; and in this case is additionally stretched axially by means of a stretching mandrel. An injection blow molding method is also known in which the blow molding process takes place directly following the injection molding of the preform. The preform remains here on the injection core, which at the same time forms a kind of tensile core. The preform is again inflated by overpressure in accordance with the mold cavity of the blow mold, which is fed onto the injection core or vice versa, and stretched there by the stretching mandrel.

Extrusion-blown, injection-blown or stretch-blown plastic containers are usually transported directly after demolding to filling plants and filled. After the filling process, in particular plastic containers containing food products such as milk, milk powder, powders of instant drinks, yoghurt drinks and similar sauces etc. are usually closed by means of a sealing film. In addition, screw closures or snap closures can also be provided. The sealing film serves on the one hand as a barrier against oxygen, moisture and possible germs, and on the other hand as an indicator for first-time opening assurance.

The sealing film is usually applied to the container opening by induction welding. In this case, a cohesive connection is produced between the outer layer of the sealing film and the plastic material on the adjoining container opening. The energy required for the sealing process largely depends on the plastic material to be bonded together of the sealing film on the one side and the container opening on the other side. The uniformity or smoothness of the opening of the container is of great importance here. The energy for the sealing process is generally introduced via the sealing plate, by means of which the sealing film is pressed onto the container opening.

In the case of smaller and/or rotationally symmetrical container openings, a relatively uniform pressure distribution can also be taken into account. When the container opening has a relatively large diameter, for example 30 mm and more, and in particular when the container opening is not rotationally symmetrical, as is usually the case in so-called wide-necked containers, due to the large diameter of the container opening Different firmnesses around the circumference can lead to uneven pressing forces of the sealing membrane against the opening of the container. In order to still ensure a reliable welding of the plastic material during the sealing process, the sealing process is usually carried out with relatively large amounts of energy and relatively high pressing forces. However, due to the relatively large amount of energy used during the sealing process, undesired deformations can occur in the region of the free opening edge of the container opening. These deformations can occur in particular at relatively narrow, sharp-edged opening edges. This can be the case, for example, in wide-necked containers, which are produced according to the so-called "neckless method". Such a container is firstly inflated like a plastic bottle in the cavity of a blow molding tool. In the section directly connected to the container body, fastening means for the form-fitting fastening of the closure, for example threaded sections, threads, projections, groove-shaped recesses, etc., are blow-molded. Subsequent to the blow molding process, the neck section of the plastic container is separated above the blow-molded fastening means for the form-fit fastening of the closure. The relatively sharp cut edge forms the opening edge of the container opening, which has a relatively large and generally different opening diameter than a circle.

In order to improve the tightness of the connection of the sealing membrane to the container opening, it has also been proposed to apply welding ribs to the container opening. The welding ribs can be applied immediately after the production of the container in the superposition method to the opening face which borders the opening of the container. The additional process of coating the material makes the production of plastic containers considerably more expensive. Alternatively, the welding ribs can also be formed in the preform produced by injection molding or extrusion on the opening face on the preform neck which borders the opening of the container. In the subsequent stretch blow molding process, the neck section of the preform is usually not changed any more. Welded ribs should improve the sealing process. Of course, the welding ribs on the opening face of the neck of the preform may be damaged during installation of the preform. Injection molded or extruded preforms are irregularly filled into larger containers after their manufacture. Scratches and/or deformations of the welding ribs can occur here. On stretch-blown containers, said scoring and/or deformation of the welding ribs can lead to leaks in the connection between the opening face of the container neck and the sealing film.

In shell-shaped containers, the container opening of which is bordered by an opening which extends radially outwards flange-like from the container wall, several concentrically arranged welding ribs have also been proposed, The weld rib extends axially from the port face. After production of the container, welding ribs are applied to the opening face, for example in extrusion or deep drawing, additionally in lamination. Applying the welding ribs in the course of additional work significantly complicates the production of the container. In shell-like containers, a radially protruding flange-like opening face makes it possible to simply support the opening face during the sealing process, whereas in a case with an opening face extending radially inwards from the outer surface of the container neck In plastic containers, no additional support is provided during the sealing process. There is only the inherent rigidity of the port surface which is able to resist the forces required for the sealing plate when the sealing membrane is welded to the material of the port surface. Thus, despite the presence of welding ribs on the opening face, only an insufficient connection of the sealing membrane to the opening face can result, which results in an impermeable seal.

Contents of the invention

It is therefore the object of the invention to remedy the described problems which can arise when applying the sealing film to the container opening. A plastic container is to be provided which enables a reliable sealing process and reduces or even eliminates leaks in the seal of the container opening. In this case, the plastic container should remain fast, simple and cost-effective to produce. Complicated additional method steps should be avoided.

The solution to this object consists in a plastic container having the features mentioned in the characterizing part of claim 1 . Developments and/or advantageous embodiment variants of the invention are the subject matter of the subclaims.

According to the invention, a plastic container is provided which has a container body and a container neck which has a container opening which can be closed by a sealing film. The container opening is bordered by a closed circumferential opening face which extends radially inward from the outer surface of the container neck to the inner opening edge. Two or more closed circumferential welding ribs are provided on the opening face, which protrude substantially axially from the opening face, are radially spaced apart from each other and are produced in a blow molding process.

Two or more welding ribs provided on the port face simplify the sealing process. The energy required for welding the participating plastic counterparts is no longer distributed over the entire opening surface of the container opening, but rather the energy is concentrated on the welding rib, in particular on the edge of the welding rib. on the most prominent areas. As a result, the welding process can be carried out with a reduced energy input and with a lower pressing force, and undesired deformation of the inner opening edge can be reduced or prevented. In the event that the inner welding rib closest to the edge of the opening is bent axially by the pressing force of the sealing plate and causes an incomplete seal, at least one further radially outer welding rib ensures sufficient counter pressure and thus ensures that the sealing membrane is in contact with the sealing plate. Continuous welding of port faces. As a result, the energy expenditure for the sealing process can be reduced. Unlike the prior art, the welding ribs are not applied to the opening face of the container opening in an additional overlay process, but are produced in a blow molding process for plastic containers. As a result, no additional outlay is required for producing the welding ribs.

The energy input into the welding rib can be concentrated again and the sealing process can be improved by having the welding rib have a greater width at the base of the transition to the opening surface than in the axially protruding region. .

In one embodiment variant of the plastic container, the welding ribs can have an essentially triangular cross-section. The sides of the triangular welding ribs enclose an angle of 17° to 75° with the opening surface of the container opening. The angle of inclination of the sides of the welding rib in the stressed region simplifies the production of the welding rib, for example the release of said welding rib from the corresponding region of the blow mould.

In an alternative embodiment variant of the plastic container, the welding rib can have a curved cross-sectional profile. The curved cross-sectional profile can run circularly or sinusoidally, for example. Such a cross-sectional profile can also be produced easily and without problems by means of the production method described in more detail below.

Another variant of the plastic container can provide that the surrounding welding ribs are formed at different heights with respect to the opening surface. In particular, the welding ribs can be formed higher in the region of the container opening in which the pressure force of the container neck against the sealing plate offers less resistance. In regions that are formed higher, the welding ribs can also have a wider base at the transition to the opening surface. In this way, different axial rigidities of the container neck or of the container as a function of the container geometry can be compensated for with respect to the pressing force during the sealing process.

In the case of plastic containers, for example, which can be constructed as wide-necked containers and have a substantially rectangular container opening, the surrounding welding ribs can have, on the corners of the container opening, with respect to the opening surface, the center of each side of the container opening. The smaller height in the section. The lower rigidity of the container neck there relative to the corners is compensated for by the greater height of the welding ribs in the middle of the sides. The height increase from the corners to the middle of each side can for example take place continuously.

A further embodiment variant of the plastic container can provide that the closed circumferential welding ribs protruding from the opening face are arranged concentrically with one another. For example, two closed circumferential welding ribs can be arranged at a radial distance of approximately 0.5 mm to 4 mm from one another. The concentric arrangement of the welding ribs can ensure an even better pressure distribution during the sealing process and thus an even better material-fit connection between the plastic material at the container opening and the sealing membrane.

For production reasons, two or more welding ribs arranged radially spaced apart from each other can each have a similar cross-sectional profile. For example, two substantially triangular welding ribs can be provided. Alternatively, the opening surface can have an approximately sinusoidal contour at least in its radially extending subregions or can be provided with two or more welding ribs with a rounded cross section.

In a further variant of the invention, the welding rib closest to the inner opening edge can have a distance from the opening edge of 20% to 50% of the radial extension of the opening surface. It should thereby be ensured that the pressure exerted by the sealing plate on the welding rib does not cause undesired deformation of the edge of the opening.

In an embodiment variant of the plastics container, the outermost welding rib, which is the furthest from the inner opening edge, extends substantially in the extension of the outer surface of the container neck. Regardless of whether the axial bending of the part of the inner welding rib(s) occurs during the sealing process, the outermost welding rib is sufficiently supported by the outer surface of the container neck, so that it is ensured that the sealing film is in contact with the outermost welding rib tight welding.

In order to carry out the energy input via the welding rib as early as possible in the sealing process, it can prove to be suitable if the plastic container has a second axial length measured with respect to the welding rib(s), which second axial length is measured with respect to the welding rib(s). The first axial length of the inner port edge is measured plus 1 mm or minus 0.5 mm.

For the sealing process it can prove to be suitable if the plastic container has two or more welding ribs which are formed such that a straight line connects the furthest axially protruding regions of the welding ribs with the edge of the opening. It forms an angle greater than or equal to 90° with the axis of the container. Expediently, the furthest axially protruding regions of all welding ribs lie on said straight line.

Plastic containers according to the invention can be produced in blow molding. Blow molding is a widely known and tried-and-true method in which a parison is widened in a blow mold by a gas, usually air, blown in at an overpressure according to the cavity of the blow mold.

A variant of the invention can provide that the plastic container is produced from a previously produced preform in a stretch blow molding process. Stretch blow molding can be primary or secondary stretch blow molding. Preforms can be produced, for example, by injection molding or by extrusion. There is also the possibility of producing the preforms in extrusion blow molding. The welding ribs are only produced in the subsequent stretch blow molding process.

In an alternative embodiment variant, the plastic container can be produced in an extrusion blow molding method. Here, a single-layer or multi-layer extruded plastic tube is extruded, lengthened and inflated according to the mold cavity in a blow mould.

In another embodiment variant, the extrusion blown plastic container can be designed as a wide-necked container which is produced in the “neckless method”. In this case, the intermediate plastic container is first produced, usually in an extrusion blow molding process. A subsequent opening surface with two or more closed circumferential welding ribs is produced during the blow molding process. Afterwards, the intermediate plastic container is cut open in the region of the opening surface in order to separate the upper section. Here, a container opening is created. During cutting, relatively sharp-edged opening edges are produced. Depending on the axial height of the welding ribs, the cut-out can take place horizontally, ie at right angles to the container axis, or obliquely. The axial height of the opening edge can be at most 5 mm higher than the axial height of the axially furthest projecting welding rib. Expediently, however, the cut-out is realized such that the axial height of the inner opening edge is at the same level as or at most 1 mm lower than the axial height of the welding rib.

Wide-necked containers can have a container body and/or a container neck with an out-of-round cross-section. Such wide-necked containers can often be used as containers for powdery fillings. The out-of-round cross-section makes it easier to remove the filling, for example with the aid of a measuring spoon. Wide-necked containers within the scope of the invention are plastic containers whose container opening has an area of 700 mm ² or more.

In another alternative, wide-necked containers can also be produced in the "neckless process" from plastic containers produced in the stretch blow molding process. The port faces with welded ribs are produced in the blow mould. The inner opening edge is obtained after cutting the stretch-blown secondary container.

The construction according to the invention can be used in different types of plastic containers, in particular plastic bottles. Plastic containers can be constructed in one layer or in multiple layers. The only proviso is that the plastic container is made of a plastic suitable for the respectively used blow molding method, ie for stretch blow molding with preceding injection molding or extrusion molding or for extrusion blow molding. Examples of such plastics are PET, PET-G, HDPE, PET-X, PP, PS, PVC, PEN, copolymers of the plastics mentioned, bioplastics such as PLA or PEF, filled plastics and mixtures of the aforementioned plastics.

Description of drawings

Additional advantages and features emerge from the following description of exemplary embodiment variants of the invention with reference to schematic diagrams, which are not shown to scale.

Figure 1 shows a view of a plastic container, in particular a wide-necked container manufactured according to the neckless method;

Figure 2 shows an enlarged axial sectional view of the section of the container neck with the container opening;

FIG. 3 shows a view similar to FIG. 2 of a variant of the section of the container neck with the container opening; and

4 and 5 show views similar to FIG. 2 of two further variants of the section of the container neck with the container opening.

detailed description

FIG. 1 shows a schematic view of a plastic container designed as a wide-necked container, which is produced according to the neckless method. The wide-necked container generally bears the reference number 1 . The wide-necked container can be formed from an extruded plastic tube in blow molding, for example in extrusion blow molding, or in stretch blow molding before, for example in injection molding or in extrusion molding. Manufactured prefab fabrication. The container 1 can be constructed in a single layer or in multiple layers and accordingly comprise one or more layers which consist of the plastic materials usually used in the process, such as PET, PET-G, HDPE, PET-X, PP, PS, PVC, PEN, copolymers of the plastics mentioned, bioplastics such as PLA or PEF, filled plastics and mixtures of the aforementioned plastics. The separate neck section 40 shown in FIG. 1 is intended to represent the production in the neckless process from an intermediate plastic container previously produced in the blow molding process. The wide-necked container 1 has a container body 2 which is closed by means of a container bottom 3 . At the longitudinal end of the container body opposite the container bottom 3, the wide-necked container 1 has a container neck 4 with a relatively large through-opening 5, which is produced by cutting through an intermediate plastic container. Mouth opening. For the purposes of the present invention, wide-necked plastic containers are referred to herein as wide-necked containers whose through opening 5 has an area greater than or equal to 700 mm ² . The plastic container can be equipped on its container neck 4 with fastening means 6 for positively fastening the closure, said fastening means being shaped in the blow molding process. The fastening means 6 can be formed as threaded sections, locking projections, or correspondingly formed internal threaded sections, grooves or the like.

FIG. 2 shows an enlarged axial section of a section of the container neck 4 . The container opening is provided with reference numeral 5 . The container opening is bordered by a closed, circumferential opening surface 8 which is delimited on the one hand by or transitions into the outer surface 9 of the container neck 4 and which leads to the inner opening in the direction of the container opening 5 . Terminates in mouth edge 7. Protruding from the opening face 8 are closed circumferential welding ribs 10, 10'. The opening face 8 with the welding ribs 10, 10' is formed in the blow mold when the wide-necked container 1 is produced by blow molding. The relatively sharp-edged opening edge 7 is obtained by dividing the neck section (reference number 40 in FIG. 1 ) of the intermediate plastic container above the opening surface 8 . According to the embodiment shown in Fig. 2, the welding ribs 10, 10' have a substantially triangular cross-section. In this case, the welding ribs 10, 10' are formed wider at the base where they transition into the opening face 8 than in the region where they extend axially furthest beyond the opening face 8. The sides of the triangular welding ribs 10, 10' enclose an angle of 15° to 75° with the opening face 8 of the container opening 5 here.

FIG. 3 shows an alternative embodiment variant of a welding rib, which is still provided with the reference numeral 10 or 10', in an axial section similar to the illustration in FIG. 2 . The schematically shown welding ribs 10, 10' have a curved cross section according to the shown embodiment variant. Here again, the welding rib is wider at its base than at the region of the welding rib that extends farthest beyond the opening surface 8 . Using the axial height of the inner opening edge 7 as a reference variable, the farthest protruding regions of the welding ribs 10' have an axial height difference of +1 mm up to -0.5 mm relative to the opening edge. In other words, the wide-necked container has a second axial length b, measured with respect to the welding rib 10 ′, which is plus 1 mm or minus 0.5 mm to the first axial length a, measured with respect to the inner opening edge 7 In the range of mm. The welding ribs 10, 10' do not have to have the same height everywhere with respect to the opening face 8. The welding ribs 10, 10' can be formed higher in the region of the opening surface 8 which, due to the container geometry, has a lower resistance to the pressing force of the sealing plate. In the higher region, the welding ribs 10, 10' can have a wider base area at their transition to the opening surface 8 than in the pressure-stabilized region. For example, in a container with a substantially rectangular container opening, the welding rib can increase continuously from the corners of the container opening towards the middle of each side of the container opening. As a result, different resistances to the pressing force of the container neck 4 against the sealing plate can be better compensated.

A comparison of the two embodiment variants of welding ribs 10 , 10 ′ according to FIG. 2 or FIG. 3 also shows that the distance of the inner welding rib 10 ′ closest to the opening edge to the inner opening edge 7 can be different. big. The spacing here depends on the radial extent of the opening surface 8 , the wall thickness in the region of the opening surface 8 and the geometry of the opening of the container. The radial extent of the opening surface 8 is, for example, 1.5 mm to 4 mm. The relatively small, rotationally symmetrical container opening gives the opening surface generally greater rigidity. Correspondingly, the inner welding rib 10 can be arranged closer to the opening edge 7 . In the case of a non-rotationally symmetrical container opening geometry, it can be expedient to arrange the inner welding rib 10 at a greater distance from the opening edge 7 .

4 and 5 show two further embodiment variants of plastic containers formed according to the invention, in which the welding ribs 10 , 10 ′ protruding from the opening surface 8 , for example, two closed circumferential welding ribs 10 , 10 ′, are at a distance from the opening edge 7 Different spacing settings. The welding ribs 10, 10' can have a substantially triangular cross-section (Fig. 4) or they can have a curved profile (Fig. 5). Combinations of welding ribs with different cross-sectional profiles can also be provided. The welding ribs 10, 10' can be designed such that a straight line t connecting the furthest axially protruding regions of the welding ribs 10, 10' and the inner opening edge 7 encloses an area greater than or equal to the axis A of the plastic container. Angle α of 90°. It can be seen from the illustration in Fig. 5 that two radially spaced welding ribs 10, 10' can have, for example, an approximately sinusoidal profile and different axial heights.

The invention is explained on the basis of the example of a container opening of a wide-necked container, which is produced, for example, according to the so-called "neckless method". Such wide-necked containers are firstly inflated like plastic bottles in the cavity of a blow-molding tool. In this case, fastening means for the form-fitting fastening of the closure, such as for example threaded sections, threads, projections, groove-shaped recesses, etc., are blowmolded in the section directly connected to the container body. Following the blow molding process, the neck section of the plastic container is separated above the blow-molded fastening means for the form-fit fastening of the closure. The relatively sharp cutting edges form the opening edge of the opening of the container, which has a relatively large opening diameter which usually differs from a circle. The welding ribs attached to the edges of the openings are likewise produced in blow molding.

It goes without saying that the embodiment according to the invention can also be used in other plastic containers with sealable container openings. For example, plastic containers can be manufactured from prefabricated preforms in the stretch blow molding process. Stretch blow molding can be one-stage or two-stage stretch blow molding. Preforms can be produced, for example, by injection molding or by extrusion. The welding ribs on the opening face of the container neck are only produced in a subsequent stretch blow molding process, in which the preform is inflated into the desired shape of the plastic container and stretched axially. It is also possible to produce the preform in an extrusion blow molding method. Preferably, in this case, the welding ribs are produced only during the blow molding process for producing the container.

Claims (17)

1. a kind of plastic containers, the plastic containers have vessel (2) and container neck (4), the container neck has container Port (5), the container port can by sealing membrane closure,

Characterized in that,

To the close ring of container port (5) bound edge around port face (8) have two or more close rings around welding Rib (10,10 '), the port face is extended radially inwardly and port side internally from the outer surface (9) of the container neck (4) Terminate in edge (7), the welding rib substantially axially from the port face (8) it is prominent, be radially spaced apart from each other and Manufactured in blow moulding.

2. plastic containers according to claim 1,

Characterized in that,

It is described welding rib (10,10 ') in the substrate being transitioned into the port face (8) have with axially extended region phase Than bigger width.

3. plastic containers according to claim 2,

Characterized in that,

The welding rib (10,10 ') has substantially triangular cross section.

4. plastic containers according to claim 2,

Characterized in that,

The welding rib (10,10 ') has the cross-sectional profiles of bending.

5. the plastic containers according to any one of the claims,

Characterized in that,

The circular welding rib (10,10 ') is constituted on port face (8) different height.

6. plastic containers according to claim 5,

Characterized in that,

In the case where container port (5) is substantially rectangle, the circular welding rib (10,10 ') is in the container port (5) corner portion has smaller compared with the intermediate section in every side of the container port (5) on the port face (8) Height.

7. the plastic containers according to any one of the claims,

Characterized in that,

The welding rib (10,10 ') is set concentrically with each other.

8. the plastic containers according to any one of the claims,

Characterized in that,

Welding rib (10 ') and the port edge (7) closest to the internal port edge (7) have a spacing, it is described between Away from radially extend 20% to 50% for the port face (8).

9. the plastic containers according to any one of the claims,

Characterized in that,

Outermost welding rib with internal port edge (7) spaced furthest is substantially in the institute of the container neck (4) State in the extension of outer surface (9) and extend.

10. the plastic containers according to any one of the claims,

Characterized in that,

The second axial length (b) on welding rib (10,10 ') measurement of the container (1) is on described in inside First length (a) of port edge (7) measurement is added in 1mm or the scope for subtracting 0.5mm.

11. the plastic containers according to any one of the claims,

Characterized in that,

The furthermost axially extended region of a welding rib in the connection welding rib (10,10 ') is described logical with inside The straight line (t) at mouth edge (7) surrounds the angle (α) more than or equal to 90 ° with container axis (A).

12. the plastic containers according to any one of the claims,

Characterized in that,

The plastic containers are manufactured in blow moulding.

13. plastic containers according to claim 12,

Characterized in that,

The plastic containers are configured to wide neck container and manufactured in " no cervical approach ".

14. the plastic containers according to claim 12 or 13,

Characterized in that,

The vessel (2) and/or the container neck (4) have non-round cross section.

15. the plastic containers according to claim 13 or 14,

Characterized in that,

The plastic containers are manufactured in stretch-blow method by ready-made prefabricated component and the welding rib (10,10 ') exists Manufactured in the stretch-blow method.

16. the plastic containers according to any one of claim 12 to 14,

Characterized in that,

The plastic containers are manufactured in extrusion blow molding processes.

17. the plastic containers according to any one of the claims,

Characterized in that,

The plastic containers individual layer or multilayer constitute, and including PET, PET-G, HDPE, PET-X, PP, PS, PVC, PEN, the copolymer for the plastics mentioned, biological plastics, such as PLA or PEF, filled plastics and above-mentioned plastics mixture.