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BR-112022006714-B1 - A container made from a plastic material.

BR112022006714B1BR 112022006714 B1BR112022006714 B1BR 112022006714B1BR-112022006714-B1

Abstract

CONTAINER PRODUCED FROM A PLASTIC MATERIAL. The invention relates to a container (11) produced from a plastic material in extrusion and blow molding comprising a container body (13), which has a first end (15) and a second end (17) substantially opposite to the first end, a first and a second sealing surface (27a, 27b) formed on the inner wall (23) of the first end (15), wherein the first and second sealing surfaces (27a, 27b) surround a filling opening (25) and can be connected to each other in a fluid-proof manner, and a container base (19) which has a support surface (21) formed on the second end (17). A flow element (29) is formed in the container (11) at the first end (15) below the first and second sealing surfaces (27a, 27b).

Inventors

  • Oliver Unterlechner

Assignees

  • ALPLA WERKE ALWIN LEHNER GMBH & CO. KG

Dates

Publication Date
20260317
Application Date
20201029
Priority Date
20191031

Claims (20)

  1. 1. A container (11) produced from a plastic material, especially in extrusion and blow molding, comprising: a container body (13), a first end (15) and a second end (17) substantially opposite to the first end, comprising: first and second sealing surfaces (27a, 27b) formed on the inner wall (23) of the first end (15), wherein the first and second sealing surfaces (27a, 27b) surround a filling opening (25) and can be connected to each other in a fluid-tight manner; a container base (19) having a support surface (21) formed on the second end (17); and a flow element (29) formed on the container (11) at the first end (15) below the first and second sealing surfaces (27a, 27b), characterized in that the container body (13) is a cylinder with a lining surface. whose coating surface is defined by coating lines, which are arranged along the circumference of the container base (19); and the flow element (29) has a height, so that, in a top view of the container, it is within the contours of the container base (19).
  2. 2. Container according to claim 1, characterized in that the flow element (29) is blow molded together with the container (11).
  3. 3. A vessel according to any one of claims 1 or 2, characterized in that the first and second sealing surfaces (27a, 27b) form a junction (31) with a long side (33) and a first and second junction ends (35, 37) when the sealing surfaces (27a, 27b) are connected in a fluid-tight manner, and a first and second baffles (39, 41) are formed in the vessel (11) in a position adjacent to the long side (33) of the junction (31).
  4. 4. Container according to claim 3, characterized in that the flow element (29) is formed below the long side (33) of the junction (31).
  5. 5. Container according to claim 3, characterized in that the flow element (29) is formed below the first or second junction end (35, 37).
  6. 6. Container according to claim 3 or 4, characterized in that the first baffle (39) is longer than the second baffle (41), and the flow element (29) is formed in the first baffle (39).
  7. 7. Container according to any one of claims 1 to 6, characterized in that the base of the container (19) has the shape of an ellipse (43) with a principal geometric axis (45) and a secondary geometric axis (47), such that the container (11) has two opposite long sides (49a, 49b) and two opposite short sides (51a, 51b).
  8. 8. Container according to claim 7, characterized in that the junction (31) is oriented parallel to the main geometric axis (45).
  9. 9. Container according to claim 7, characterized in that the junction (31) is oriented parallel to the secondary geometric axis (47).
  10. 10. Container according to any one of claims 7 to 9, characterized in that the flow element (29) is formed on one of the short sides (51a, 51b).
  11. 11. Container according to any one of claims 7 to 9, characterized in that the flow element (29) is formed on one of the long sides (49a, 49b).
  12. 12. Container according to any one of claims 1 to 11, characterized in that the flow element (29) has a neck (53), a lid (55) and a flow opening (57), the lid (55) closing the flow opening (57).
  13. 13. Container according to claim 12, characterized in that a cutting line (59) is formed in the neck (53).
  14. 14. Container according to any one of claims 12 or 13, characterized in that the lid (55) is connected to the container body (13) by a retaining strip (63).
  15. 15. Container according to any one of claims 1 to 14, characterized in that the flow element (29) has an olive shape in cross-section.
  16. 16. Container according to any one of claims 1 to 15, characterized in that the flow element (29) has a teardrop shape in cross-section.
  17. 17. Container according to any one of claims 1 to 16, characterized in that a teardrop-shaped base (67) is formed at the transition from the flow element (29) to the container body (13).
  18. 18. Container according to any one of claims 1 to 14, characterized in that the flow element (29) has the shape of a pyramid, one side of the pyramid being the cut-off cap (55).
  19. 19. Container according to any one of claims 1 to 17, characterized in that the lid (55) has the shape of a truncated cone.
  20. 20. Container according to any one of claims 3 to 19, characterized in that the flow element (29) joins the long side (33) of the junction (31) or projects into the junction (31).

Description

FIELD OF THE INVENTION [001] The invention relates to a container produced from a plastic material in extrusion and blow molding, according to the preamble of claim 1. PREVIOUS TECHNIQUE [002] The production of plastic containers, especially plastic bottles, for example, made of polyethylene or polypropylene, takes place in extrusion and blow molding. In this case, the plastic suitable for blow molding is plasticized and introduced into a tube head by means of an extruder. In the tube head, the plastic is formed into a tube, which is introduced into a blow molding tool. The hose is introduced into the blow molding tool, inflated by overpressure of a gas when the tool is closed so that the hose expands and is pressed against an inner wall of a cavity in the blow molding tool and takes the shape of the inner wall, which has a shape that is the negative of a container. The container blown from the hose is cooled by means of the inner wall until the plastic hardens. Subsequently, the container is removed from the open blow molding tool. In a separate step, the so-called pellets, which are formed by the tube protrusion during the closing of the blow mold and are usually connected to the removed container, are cut and can be sent for recycling. The hose can be single-layered or multi-layered. [003] As a rule, outlet openings are formed at one end of the container during the blow molding process. Consequently, during the filling process, the containers are filled through the outlet opening. Thus, the filling speed at the filling line depends on the cross-section of the outlet opening and the consistency of the product with which a container is to be filled. [004] To enable an increased filling rate, WO 2017/072185 A1 discloses an extrusion-blow molded container having an open first end and a second end. The first end has first and second sealing surfaces. The sealing surfaces surround a filling opening and can be connected in a fluid-tight manner after filling. The second end is formed as a container base with a supporting surface. The fact that the filling opening can extend to the maximum over the entire cross-section of the container makes rapid filling of the container possible. [005] For the filling material to drain, the container needs to be opened or a closing element must be laminated between the sealing surfaces with a drainage opening. If the container is cut, a drainage opening is produced, which is not as easy to use because the filling material can easily spill during drainage. If a closing element is present, the closing element needs to be inserted between the sealing surfaces before it can be welded to them. Furthermore, the closing element may be produced from a different plastic than that of the container; as a result, single-type disposal of the container is not possible. OBJECTIVE OF THE INVENTION [006] Based on the disadvantages of the previous technique described, the objective is to create an extrusion-blow molded container that allows for quick filling and easy opening and draining of the container, and the container must be able to be produced easily and quickly at the same time. DESCRIPTION [007] The solution to the stated objective is obtained with a container produced from a plastic material, especially in extrusion and blow molding, by the means listed in the characterizing portion of claim 1. The dependent claims establish advantageous alternative developments and/or embodiments. [008] The invention is preferably characterized by a drain element being formed in the container at the first end below the first and second sealing surfaces. The drain element is therefore an integral component of the container and does not need to be subsequently connected to it after its manufacture. The container can be easily emptied through the drain element, and the drain element does not get in the way when the filling opening is closed. [009] In a particularly preferred embodiment of the invention, the flow element is blow-molded together with the container. The supply of the flow element, therefore, does not require an additional production step, but is blown into the identical mold at the same time as the container. The production of the container, therefore, occurs quickly and without additional production effort. No leakage point can occur between the flow element and the container body, because both are blown from an identical extruded plastic hose. Extrusion-blown molded containers are clearly visible at a junction on the underside of the base that emerges when the mold is moved together, due to the free end of the plastic hose being pressed together. It proves to be particularly advantageous if the first and second sealing surfaces form a junction with a long side and a first and second junction ends when the sealing surfaces are connected in a fluid-tight manner, and a first and second baffle is formed over the container in a position adjacent to the long side of the junction. After the cont