WO2022161877A1 - Extrusionsblasgeformter behälter - Google Patents
Extrusionsblasgeformter behälter Download PDFInfo
- Publication number
- WO2022161877A1 WO2022161877A1 PCT/EP2022/051394 EP2022051394W WO2022161877A1 WO 2022161877 A1 WO2022161877 A1 WO 2022161877A1 EP 2022051394 W EP2022051394 W EP 2022051394W WO 2022161877 A1 WO2022161877 A1 WO 2022161877A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- shoulder
- container according
- neck
- central axis
- Prior art date
Links
- 238000001125 extrusion Methods 0.000 title claims description 12
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000004033 plastic Substances 0.000 claims abstract description 17
- 229920003023 plastic Polymers 0.000 claims abstract description 17
- 238000010101 extrusion blow moulding Methods 0.000 claims abstract description 12
- 210000003739 neck Anatomy 0.000 claims description 83
- 230000000694 effects Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 11
- 238000003466 welding Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000071 blow moulding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009449 lightweight packaging Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920006300 shrink film Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/023—Neck construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/12—Cans, casks, barrels, or drums
- B65D1/20—Cans, casks, barrels, or drums characterised by location or arrangement of filling or discharge apertures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/38—Devices for discharging contents
- B65D25/40—Nozzles or spouts
- B65D25/42—Integral or attached nozzles or spouts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2205/00—Venting means
- B65D2205/02—Venting holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
- B65D2501/0072—Means for facilitating filling of the bottle
Definitions
- the invention relates to a container made from a plastic material by extrusion blow molding according to the preamble of claim 1 and to a combination of a container and a screw cap according to the preamble of claim 20.
- Plastic containers in particular plastic bottles, for example made of polyethylene or polypropylene, are produced by extrusion blow molding.
- plastic suitable for blow molding is plasticized by means of an extruder and introduced into a tube head.
- the plastic is formed into a tube that is placed in a blow molding tool.
- the tube is placed in the blow molding tool and, with the tool closed, inflated via a blow pin by means of overpressure of a gas, so that the tube expands and is pressed against an inner wall of a cavity of the blow molding tool and assumes the shape of the inner wall, which has the negative shape of a container .
- the container molded from the tube is cooled by means of the inner wall until the plastic has hardened.
- the container is then removed from the opened blow molding tool.
- the so-called slugs which form due to the overhang of the hose when the blow mold closes and are usually connected to the removed container, are separated and can be fed into the recycling stream.
- the hose can be single-layer or multi-layer.
- the exit openings are formed at one end of the container during blow molding. Accordingly, the containers are filled via the outlet opening during the filling process.
- the filling speed at the filling line is therefore dependent on the cross-section of the outlet opening and the consistency of the product to be filled.
- WO 2017/072185 A1 describes an extrusion blow-moulded container which has a first open end and a second end.
- the first end has first and second sealing surfaces.
- the sealing surfaces enclose a filling opening and can be connected in a fluid-tight manner after filling.
- the second end is designed as a container bottom with a standing surface. Since the Filling opening can extend over the entire cross section of the container, rapid filling of the container is made possible.
- the container To pour out the contents, the container must be cut open or a closure element with a pouring opening must be welded between the sealing surfaces. If the container is cut open, the result is a pouring opening which is less user-friendly because an aid is required to open it and contents can easily be spilled when poured. If a closure element is present, the closure element must be inserted between the sealing surfaces before it can be welded to them. In addition, the closure element can be made of a different plastic than the container, which means that it is not possible to dispose of the container according to type.
- a filling opening and a separate pouring opening can be provided on an extrusion blow molded container. It is preferred if the filling opening is larger than the pouring opening. As a result, the container can be filled quickly and the contents poured out precisely or transferred to another container. In addition, the material requirement is reduced if a screw cap is provided for a small pouring opening.
- such containers are not trivial to manufacture since both openings require sufficient space.
- the invention is preferably characterized in that the filling opening has a first central axis and the pouring opening has a second central axis and that the first and second central axes are essentially parallel to one another.
- the openings can be formed particularly quickly and flexibly during extrusion blow molding.
- the first and second central axes are oriented parallel to the extrusion direction or to the longitudinal extension of the container. This orientation of the central axes or the openings saves space, allows for multiple cavities in the mold and thus makes it possible to produce a larger number of containers per cycle.
- the plane defined by the first and the second central axis corresponds to the mold parting plane of the container. This arrangement of the central axes of the openings ensures that there is sufficient material for the formation of threads, in particular external threads.
- the filling opening is defined by a first neck surrounding the filling opening and a first and second shoulder adjoin the first neck.
- the first neck can be closed particularly easily by suitable connection techniques such as welding or gluing after the container has been filled through the filling opening. An additional closure or an additional separate inserted neck are therefore advantageously not required.
- a first cone is formed by the first and second shoulders. The shoulder angles can be designed flexibly and the shoulder geometries can thus be adapted to different container volumes.
- the invention is also characterized in that the pouring opening is defined by a second neck surrounding the pouring opening and at least one third shoulder adjoins the second neck.
- the shoulder geometries of the at least third shoulder can also be adapted to the container shape and the container volume. It is possible that the second neck does not have a fourth shoulder and that the second neck merges directly into the first shoulder, if this is required by the container design.
- the third and a fourth shoulder adjoin the second neck.
- the third and fourth shoulder also form a separate second cone and the shoulder angles of the third and fourth shoulder can be flexibly adapted to the container design.
- the design of the third and fourth shoulder can lead to an optimized lateral inclination of the pouring spout, which is a consequence of the substantially circular spout becoming a line half the length of the spout's circumference after sealing.
- An appropriately selected inclination can make the application more convenient for the consumer and improve the emptying of the packaging.
- the pouring opening is provided below the filling opening. As a result, the pouring opening does not get in the way when the filling opening is welded. Nevertheless, it is possible for the second neck to have a certain height in order to implement design elements such as a retaining strap or a guarantee ring on the screw cap. This embodiment is particularly advantageous when using the container according to the invention in bottling plants.
- an external thread is formed on the second neck, which external thread can interact with the internal thread of a screw cap.
- the external thread of the pouring opening was specially developed for use with lightweight packaging. It can be molded with very little material. The external thread only acquires its final rigidity when it is screwed to the screw cap, since it is compressed like an accordion when it is screwed on.
- the second and third shoulders are continuous with the skirt of the container.
- the pouring opening can be closed for the first time with a closing tool without the first neck getting in the way, or the filling opening can be welded without the second neck getting in the way. This is also an advantage in bottling plants.
- the third shoulder merges into the first shoulder. This is advantageous if there is still sufficient space between the first and the second neck, although the third shoulder does not open directly into the jacket of the container or into the container body.
- the second neck rises from a platform formed on the container, the platform having first and second flanks, these flanks merging into the skirt.
- the platform increases the torsional rigidity of the spout or the second neck. This is particularly advantageous when assembling and disassembling the screw cap.
- the shoulder facing the pouring opening has a convex shape. Due to the first shoulder being pulled downwards, sufficient space can also be created for mechanically putting on the screw cap or for attaching the screw cap to a guarantee band or a retaining band.
- the pouring opening is shaped in such a way that it lies within the outline of the container bottom when the container is viewed from above. This simplifies the requirements for the blow mold and the second neck can be shaped true to shape. This also enables simplified palletizing because the second neck does not protrude. This is also advantageous if the container is to be decorated, for example printed, stuck with labels or the like, or wrapped with shrink film.
- the first and second necks are bias molded together with the container.
- the provision of the pouring and filling openings therefore does not require an additional production step, but they are blown in the identical mold and at the same time as the container.
- the container is therefore manufactured quickly and with no additional production costs.
- first and second sealing surfaces form a seam with a longitudinal side and a first and second seam end, if the sealing surfaces are connected in a fluid-tight manner and the first and second shoulders on the container adjoining the longitudinal side of the seam are trained. After the container has been quickly filled, made possible by a correspondingly dimensioned filling opening, the container can be reliably closed.
- a ventilation opening is expediently provided on the container. This is expediently arranged opposite the pouring opening and can be a nipple that can be cut off. This allows the product to flow homogeneously and evenly out of the container.
- the first and second central axes enclose an acute angle E with one another. As a result, the pouring opening is oriented in the direction of the tilting movement of the container when filling is poured out. The user-friendliness of the container is therefore markedly improved by the formation of the angle E.
- At least one compensating groove is formed on the shoulders to compensate for thermal deformations, which is oriented in the circumferential direction of the shoulders.
- the compensating groove reduces the deformations or compensates for the thermal stresses caused by the welding of the filler opening.
- the compensating groove is preferably formed at the transition from the second shoulder to the container body and at the transition from the second neck or the fourth shoulder to the first shoulder 39 .
- the compensating groove can be formed well at this point and can compensate for thermal deformations particularly efficiently.
- the at least one compensating groove runs out in the direction of the shoulders.
- the shoulders are not weakened by the groove.
- the groove is circumferential and does not end in front of the shoulders.
- the depth of the at least one compensating groove is expediently variable.
- the compensating groove can compensate for more or less deformation at different points.
- the shape of the cross section can also have different shapes.
- the cross section of the groove is V-shaped.
- a further aspect of the invention relates to a combination of a container according to one of the above descriptions and a screw cap which can be fitted onto the second neck.
- the invention is characterized in that the sealing effect between the sealing element of the screw cap and the second neck is realized in that the second neck is widened when the sealing element protrudes into the second neck.
- This type of sealing function makes it possible for the second neck to be designed with particularly thin walls, since the necessary rigidity for producing the seal is taken over by the sealing element. This allows the second neck to be formed with little plastic material.
- the external thread receives its final rigidity through the screw connection with the screw cap. This allows next to the second neck, the external thread can also be shaped to save material.
- the rigidity is provided by a kind of "accordion effect".
- the screw cap has an attachment on which a tool can be attached and a torque can be transmitted from the tool to the cap.
- the screw cap can also be screwed onto the second neck for the first time when there is not enough space for a standard tool (capper) to place the cap on the second neck on the broad side of the container and the capper can therefore not remove the screw cap outside can grab.
- the attachment is preferably a hexagon socket or another form-fitting connection by means of a multi-tooth system.
- the lug is a depression which acts as the sealing element.
- the sealing element fulfills two functions and the screw cap requires less plastic material for its manufacture if designed accordingly.
- the container is designed in one piece. As a result, not only are further production steps obsolete, but the container together with the pouring element can be disposed of separately.
- Another aspect of the invention relates to a container made from a plastic material, in particular by extrusion blow molding, according to the preamble of claim 24.
- the invention is also characterized in that the filling opening is defined by a first neck surrounding the filling opening and a first and second neck are attached to the first neck Connect the shoulder and that the pouring opening is defined by a second neck surrounding the pouring opening and at least one third shoulder adjoins the second neck. Due to the shaping of the first and second neck, two cones are formed, the opening angle or shoulder angle of which can be designed flexibly.
- first and second necks are preferably defined in that the filling opening has a first central axis and the pouring opening has a second central axis and that the first and second central axes define a plane, with an imaginary one running along the first shoulder and in this plane lying, first straight line relative to the first central axis includes an angle a, which is relative to an angle ß, which is an imaginary one, along the third shoulder third straight line that runs and lies in this plane compared to the first central axis.
- the two necks can be adapted to the basic shapes of the container (bag) of different widths.
- the third and a fourth shoulder are connected to the second neck, with the fourth shoulder merging into the first shoulder.
- the shoulder geometries on the second neck can be made even more flexible.
- Shoulder angles of the first and second necks are preferably also defined in that an imaginary second straight line running along the second shoulder and lying in the plane defined by the first and second central axis encloses an angle y with respect to the first central axis, which angle is 5 , which includes an imaginary fourth straight line, running along the fourth shoulder and lying in this plane, opposite the first central axis.
- first central axis and the second central axis are aligned essentially parallel to an imaginary main axis of the container, space can be saved and a number of cavities can be provided in the blow mold. This enables faster cycle times, which is ecologically and economically beneficial.
- the following 7 embodiments enable flexible geometries relating to the shoulders and shoulder angles, as a result of which the following points can be implemented in a preferred manner.
- Sufficient space can be created between the filling opening and the pouring opening to facilitate mechanical sealing of the pouring opening with a sealing tool (capper) and to enable the use of a sealing bar to close the filling opening.
- angle ⁇ is greater than the angle ⁇ or if the first and third shoulders together form an at least approximately concave shape. It has proven to be expedient if the angle ⁇ is smaller than the angle ⁇ or if the first and third shoulders together form an at least approximately convex shape
- angle ⁇ and the angle ⁇ are approximately the same size and are in the range of 10-30 degrees, in particular 18-22 degrees.
- angle a is in the range of 30-60 degrees, in particular 40-50 degrees.
- the pouring opening is provided below the filling opening.
- the pouring opening does not get in the way when the filling opening is welded.
- the second neck it is possible for the second neck to have a certain height in order to implement design elements such as a retaining strap or a guarantee ring on the screw cap. This embodiment is particularly advantageous when using the container according to the invention in bottling plants.
- FIG. 1a, 1b, 1c A side view, a top view and a perspective view of an extrusion blow molded container with a filling opening and a pouring opening;
- FIG. 2 a first embodiment of the container with the screw cap in place, in a side view;
- 3a, 3b a 2nd and 3rd embodiment of an extrusion blow-moulded container with an attached screw cap in a side view, which shows, among other things, that the pouring opening is arranged below the filling opening;
- Figure 4a, 4b the 2nd and 3rd embodiment, in which the space requirement between the two openings is emphasized;
- Figure 5 is a perspective view of a fourth embodiment in which a platform is formed on the container;
- FIG. 6 a sectional illustration through the pouring opening and a screw cap placed on the pouring opening;
- FIG. 7 the screw cap in a perspective view
- FIG. 8a, 8b a comparison of an embodiment with a straight and a convex shoulder geometry and the different position of the pouring opening compared to the filling opening;
- FIG. 9a, 9b a comparison of the embodiment with a straight and a convex shoulder geometry and the associated space requirement
- FIG. 10 a side view of the container after the filling opening has been welded
- FIG. 11 a side view showing the angles of inclination of the shoulders
- FIG. 12 shows a side view of the container in an embodiment with two equalizing grooves visualized
- Figure 13 is another side view of the container of Figure 12;
- Figure 14 is another side view of the container of Figure 12 and
- FIG. 15 is a perspective view of the container of Figure 12. Possible embodiments of a container are shown in FIGS.
- FIG. 1 shows a front view, a side view and a perspective view of a possible embodiment of the container 11 .
- the container 11 includes a container body 13 having a first end 15 and a second end 17 substantially opposite the first end 15 .
- the second end 17 is sealed in a fluid-tight manner and is designed as a container bottom 19 on which a standing surface 21 is formed.
- the extrusion-blow molded container 11 has an inner wall 23.
- the inner wall 23 delimits a filling opening 25 at the first end 15, through which a filling material is filled into the extrusion-blow molded container 11.
- the first end 15 has on its inner wall 23 a first sealing surface 27a and a second sealing surface 27b opposite the first sealing surface 27a, which can be connected to one another in a fluid-tight manner and are connected to one another in a fluid-tight manner after the filling material has been filled in.
- the sealing surfaces 27a, 27b can be welded.
- the container 11 is therefore preferably made of a weldable plastic.
- the sealing surfaces 27a, 27b can be coated with a hot-melt adhesive or an adhesion promoter, which can also be textured.
- the filling opening 25 has such a width that the contents can be filled into the container 11 quickly and without overflowing.
- a pouring opening 29 is formed below the sealing surfaces 27a, 27b.
- the pouring opening 29 is blow molded together with the rest of the container 11 and is therefore formed at the same time as the container 11 in the blow mold by blowing up the container material.
- the sealing surfaces 27a, 27b are connected to one another in a fluid-tight manner, in that they are brought into contact by adhering to one another and the filling opening 25 is thereby closed.
- the sealing surfaces 27a, 27b form a seam 31, which is shown in FIGS.
- the seam 31 has a longitudinal side 33 and a first and second seam end 35,37.
- a first and second shoulder 39 , 41 is formed on the container 11 below the longitudinal side 31 .
- the bottom 19 can have the shape of an ellipse 43 .
- the filling opening 25 has a first central axis 45 and the pouring opening 29 has a second central axis 47 . It is particularly preferred if the first and second central axes 45, 47 are parallel to one another and parallel to the extrusion direction or are oriented to the longitudinal extension of the container 11. In the case of production using the EBM (Extrusion Blow Moulding) method, it is particularly favorable if both openings 25, 29 are in a line parallel to the tube. This saves space, allows a higher number of cavities in a mold, therefore enables a higher output and is therefore economically and ecologically advantageous.
- EBM Extrusion Blow Moulding
- the filling opening 25 is defined by a first neck 49 which surrounds the filling opening 25 and is adjoined by the first and second shoulders 39,41.
- the pouring opening 29 is defined by a second neck 51 surrounding the pouring opening 29. At least one third shoulder 53 adjoins the second neck 51.
- both openings 25,29 are within the mold parting. This ensures that there is sufficient material to form an external thread 55 on the second neck 51 .
- the first neck 49 runs into the first and the second shoulder 39, 41, the second shoulder 41 merging into the container body 13 or into the jacket 14 of the container 11.
- the second neck 51 extends into the third shoulder 53 and into a fourth shoulder 57 ( Figure 2).
- the third shoulder 53 can either run directly into the container body 13 ( Figure 2, 3b, 4b) or is offset and runs into the first shoulder 39 ( Figure 1, 3a, 4a, 8, 9).
- the second neck 51 can also merge directly into the first shoulder 39 if this is permitted by the basic shape of the container 11 (FIGS. 3, 4, 8a, 9a), as a result of which a fourth shoulder 57 is omitted.
- the first and the second neck 49.51 are therefore placed on two separate cones (Fig. 2).
- the division into four shoulders allows flexible adjustment of the pouring and filling opening 29.25.
- the up to four shoulders and their different shoulder angles have even more advantages:
- the pouring and filling opening 29, 25 can be provided on the broad side of the container on containers of different sizes or volumes, without space problems occurring.
- the pouring opening 29 is lower than the filling opening 25.
- the filling opening 25 can be welded or glued without the pouring opening 29 being in the way during this processing step. Due to the adaptation of the shoulders, there is also sufficient space for the closure of the pouring opening 29 and elements such as a guarantee ring 59 or a retaining strap.
- FIGS. 3 and 8 The at different shoulder geometries different Positions of the pouring opening compared to the filling opening are shown in FIGS. 3 and 8 and are illustrated by the double arrows.
- FIGS. 4 and 9 there is also sufficient space between the pouring opening and the filling opening so that a closing tool can be used in order to be able to place a screw cap 61 on the second neck 51 .
- the sufficient distance is illustrated in FIGS. 4 and 9 by the shaded area 63.
- a comparison of the shoulder geometries shown in FIGS. 4a and 9a with the shoulder geometries shown in FIGS. 4b and 9b shows that the shoulder geometries shown in FIGS. 4b and 9b allow significant space gains with the same dimensioning of the filling opening and the pouring opening.
- the container 11 with a platform 65 is shown in FIG.
- the platform 65 has first and second flanks 67a, 67b, which flanks terminate in the container body 13 and the shell 14, respectively.
- the platform 65 increases the torsional rigidity of the spout opening 29 or the second neck 51. This is particularly important when assembling and disassembling the screw cap 61.
- the external thread 55 was specially developed for use with lightweight packaging. It can be shaped with very little material and only obtains its final rigidity when it is screwed to the screw cap 61 , since it is compressed by the screw cap 61 placed on it.
- the screw cap 61 has a sealing element 69 formed which protrudes into the pouring opening 29 when the screw cap is placed on the second neck 51 .
- the screw cap 61 has an internal thread 71 which interacts with the external thread 55 .
- the sealing element is designed to be so stiff that it can widen the thin-walled second neck 51 . This creates the sealing effect between the second neck 51 and the screw cap 61.
- the screw cap 61 preferably has a depression 73 which acts as the sealing element 69 .
- the depression can have an attachment for a tool in order to be able to transmit torque to the screw cap 61 in a form-fitting manner.
- the approach can be a hexagon socket 75 or another multi-tooth.
- FIGS. 8b and 9b A further embodiment is shown in FIGS. 8b and 9b, in which the first shoulder 39 has a convex shape.
- the first shoulder 39 is bent away from the pouring opening 29 .
- the convex first shoulder allows sufficient space in addition to the provision of two cones below the first and second necks 49,51 for mechanically screwing on the screw cap 61, for closing the filling opening 25 and creating a required height for the provision of a guarantee ring and/or a retaining strap.
- a ventilation opening 77 can be provided on the container body 13 (FIG. 2) in order to form a homogeneous flow of filling material when pouring out. This can be realized by a nipple that can be cut open.
- FIG. 1b shows that the pouring opening 29 and the filling opening 25 are shaped in such a way that they lie within the base 19 or the largest body contour when the container 11 is viewed from above. The pouring and filling openings are therefore within the "footprint" of the container 11.
- the shoulder design can lead to an optimized lateral inclination of the pouring opening 29 by changing the shape in the welding process.
- This change in the inclination of the second central axis 47 by closing the filling opening 25 with a weld seam 79 is shown in Figure 10 and defined by the angle E, which indicates the angle between the first and the second central axis 45,47 after the filling opening 25 has been closed and is an acute angle.
- This inclination of the second central axis 47 relative to the first central axis 45 is influenced by the two shoulder geometries and their intersection.
- the design of the third and fourth shoulders 53, 57 can thus lead to an optimized lateral inclination of the pouring opening 29, which is a consequence of the fact that the essentially circular filling opening 25 after closing becomes a line with half the length of the circular circumference of the filling opening 25 becomes.
- a correspondingly selected inclination can make the application more convenient for the consumer and also improve the emptying of residues from the packaging, since the second central axis 47 is oriented in the tilting direction of the container 11 when pouring out.
- the angles between the four shoulders 39,41,53,57 and the first central axis 45 are shown in FIG.
- the first and the second central axis 45,47 span a plane. In this plane there are a first, second, third and fourth straight line which extend along the first, second, third and fourth shoulder. If one of the shoulders should be curved, the corresponding straight line runs as a tangent at the apex of the shoulder curvature.
- the container 11 has a main axis 81 which is preferably parallel to the first and the second central axis 45 , 47 and is oriented parallel to the extrusion direction or to the longitudinal extension or to the jacket 14 of the container 11 .
- the first straight line encloses an angle ⁇ with the first central axis 45 .
- the third straight line encloses an angle ⁇ with the first central axis 45 .
- the second straight line encloses an angle ⁇ with the first central axis 45 .
- the fourth straight line encloses an angle ⁇ with the first central axis 45 . Since the first and the second central axis 45, 47 are preferably parallel, the four angles also occur between the four straight lines and the second central axis 47.
- angles ⁇ and ⁇ are different and the angles ⁇ and ⁇ are different. It is preferred if the angle a is in the range of 30-60 degrees, in particular 40-50 degrees. It is also preferred if the angle ⁇ and the angle ⁇ are approximately the same size and are in the range of 10-30 degrees, in particular 18-22 degrees. Angle ⁇ or angle ⁇ can be 0 degrees. If angle ⁇ and angle ⁇ are 0 degrees, then the second cone becomes a cylinder.
- Sufficient space can be created between the filling and the pouring opening 25, 29 to facilitate the mechanical closing of the pouring opening with a closing tool (capper) and to enable the use of a welding bar to close the filling opening.
- At least one compensating groove 80 can be formed between the first and second shoulders 39, 41, as is shown in FIGS.
- the compensating groove 83 can compensate for these deformations, as a result of which the rest of the container is only marginally deformed, if at all.
- the depth of the groove 83 can be variable and, for example, become smaller and smaller in the direction of the two shoulders 39,41. This allows the groove 83 to taper off to one or both shoulders.
- the groove can also run around the shoulders 39,41 or end in front of one of the shoulders 39,41 or in front of both shoulders 39,41.
- the cross section of the groove 83 may be V-shaped, for example.
- the compensating groove 83 is preferably formed at the transition from the second shoulder 41 to the container body 13 and at the transition from the second neck 51 or the fourth shoulder 57 to the first shoulder 39 .
- the extrusion blown container 11 is integrally formed, and the first and second necks 49, 51 are blown together with the container body 13 in one mold.
- the first and second necks are therefore an integral part of the container 11 and do not have to be subsequently fitted and connected thereto.
- the container 11 is characterized in that the filling and pouring openings 25, 29 are in a line parallel to the extruded hose during production using the EBM (Extrusion Blow Moulding) process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/262,905 US20240076092A1 (en) | 2021-01-26 | 2022-01-21 | Extrusion blow-molded container |
CN202280011859.5A CN116761759A (zh) | 2021-01-26 | 2022-01-21 | 挤出吹塑容器 |
EP22701589.8A EP4284723A1 (de) | 2021-01-26 | 2022-01-21 | Extrusionsblasgeformter behälter |
MX2023008019A MX2023008019A (es) | 2021-01-26 | 2022-01-21 | Recipiente moldeado por extrusion soplado. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00072/21A CH718284A1 (de) | 2021-01-26 | 2021-01-26 | Behälter aus einem Kunststoffmaterial mit einer Einfüllöffnung und einer separaten Ausgiessöffnung. |
CH00072/21 | 2021-01-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022161877A1 true WO2022161877A1 (de) | 2022-08-04 |
Family
ID=74591699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/051394 WO2022161877A1 (de) | 2021-01-26 | 2022-01-21 | Extrusionsblasgeformter behälter |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240076092A1 (de) |
EP (1) | EP4284723A1 (de) |
CN (1) | CN116761759A (de) |
CH (1) | CH718284A1 (de) |
MX (1) | MX2023008019A (de) |
WO (1) | WO2022161877A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1865465U (de) * | 1962-10-19 | 1963-01-10 | Franz Baumann & Co | Behaelter aus kunststoff mit wieder verschliessbarer auslauftuelle. |
WO1998038094A2 (en) * | 1997-02-28 | 1998-09-03 | Sprayex L.L.C. | Multiple neck spray bottle and method of making |
WO2004035396A1 (en) * | 2002-10-16 | 2004-04-29 | Terry Shulze | Simple biodiesel production device |
WO2017072185A1 (de) | 2015-10-27 | 2017-05-04 | Alpla Werke Alwin Lehner Gmbh & Co. Kg | Extrusionsblasgeformter behälter |
-
2021
- 2021-01-26 CH CH00072/21A patent/CH718284A1/de unknown
-
2022
- 2022-01-21 CN CN202280011859.5A patent/CN116761759A/zh active Pending
- 2022-01-21 MX MX2023008019A patent/MX2023008019A/es unknown
- 2022-01-21 EP EP22701589.8A patent/EP4284723A1/de active Pending
- 2022-01-21 WO PCT/EP2022/051394 patent/WO2022161877A1/de active Application Filing
- 2022-01-21 US US18/262,905 patent/US20240076092A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1865465U (de) * | 1962-10-19 | 1963-01-10 | Franz Baumann & Co | Behaelter aus kunststoff mit wieder verschliessbarer auslauftuelle. |
WO1998038094A2 (en) * | 1997-02-28 | 1998-09-03 | Sprayex L.L.C. | Multiple neck spray bottle and method of making |
WO2004035396A1 (en) * | 2002-10-16 | 2004-04-29 | Terry Shulze | Simple biodiesel production device |
WO2017072185A1 (de) | 2015-10-27 | 2017-05-04 | Alpla Werke Alwin Lehner Gmbh & Co. Kg | Extrusionsblasgeformter behälter |
Also Published As
Publication number | Publication date |
---|---|
CH718284A1 (de) | 2022-07-29 |
MX2023008019A (es) | 2023-08-23 |
US20240076092A1 (en) | 2024-03-07 |
EP4284723A1 (de) | 2023-12-06 |
CN116761759A (zh) | 2023-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0182094B1 (de) | Verfahren zum Herstellen einer mit einer verschliessbaren Öffnung versehenen Verpackung und nach diesem Verfahren hergestellte Verpackung | |
EP0612664B1 (de) | Verpackung für Fliessmittel, Verfahren zur Herstellung einer solchen Packung und Vorrichtung zur Durchführung des Verfahrens | |
DE69738001T2 (de) | Hermetisch verschlossener Behälter mit zerbrechbarem Band und Verschlussansätzen sowie Verfahren und Vorrichtung zum Herstellen desselben | |
DE60316917T2 (de) | Hermetisch verschlossener behälter mit einstückig ausgebildetem tropfenspender | |
EP0786417B1 (de) | Kunststofftube mit einem Tubenkörper, sowie Verfahren zu deren Herstellung | |
DE2821430A1 (de) | Behaelter aus kunststoff mit kreisfoermigem querschnitt, insbesondere durch blasformen hergestellte flasche fuer unter erhoehtem druck stehende fluessigkeiten | |
EP1268160B1 (de) | Verfahren zum herstellen eines mit einer druckausgleichsöffnung versehenen behälters und nach diesem verfahren hergestellter behälter | |
DE4339219C2 (de) | Palettencontainer | |
WO1998045188A1 (de) | Kunststoff-ausgiess-einschweissteil für nachfüllbehälter | |
EP3368438B1 (de) | Extrusionsblasgeformter behälter | |
EP4284723A1 (de) | Extrusionsblasgeformter behälter | |
DE2915228A1 (de) | Verpackungsbehaelter fuer fluessige und rieselfaehige produkte und verfahren zum herstellen des behaelters | |
CH635792A5 (en) | Squeezable delivery container | |
DE19618328B4 (de) | Flexibler Kunststoffbehälter | |
DE19547425A1 (de) | Verfahren zur Herstellung eines Kunststoffbehälters und Vorformling zur Herstellung eines Kunststoffbehälters | |
WO2003029103A1 (de) | Mehrkammerbehälter und verfahren zu dessen herstellung | |
CH719939A1 (de) | Behälter hergestellt aus Kunststoff, mit einem einstückig mit dem Behälter ausgeformten, eine Öffnung definierenden Hals. | |
WO2024023167A1 (de) | Extrusionsblasgeformter behälter mit schraubkappe | |
EP4051598A1 (de) | Extrusionsblasgeformter behälter | |
EP0894608B1 (de) | Verfahren zum Herstellen einer Wärmflasche und danach hergestellte Wärmflasche | |
DE102006059798A1 (de) | Tube aus thermoplastischem Kunststoff und ein Verfahren zur Herstellung einer solchen Tube | |
DE102007024849A1 (de) | Chemikalienflasche für druckaufbauende Füllgüter | |
CH663756A5 (de) | Blasgeformter kunststoffbehaelter. | |
EP4153495A1 (de) | Kunststoffbehälter | |
WO2023025925A1 (de) | Streckgeblasener kunststoffbehälter und verfahren zum herstellen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22701589 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2023/008019 Country of ref document: MX |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112023013611 Country of ref document: BR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18262905 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280011859.5 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 112023013611 Country of ref document: BR Kind code of ref document: A2 Effective date: 20230706 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022701589 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022701589 Country of ref document: EP Effective date: 20230828 |