Apparatus for forming plastic preforms into plastic containers, a blow mould and a method of manufacturing a container

Patent metadata

Field	Value
Publication number	US-11420377-B2
Application number	US-201915734015-A
Country	US
Kind code	B2
Filing date	Sep 25, 2019
Priority date	Sep 25, 2018
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

Apparatus (1) for forming plastic preforms (10) into plastic containers (20), having at least one blow mould (14) which has at least two blow mould side parts (14a, 14b) and a bottom mould (14c), wherein the blow mould side parts (14a, 14b) and the bottom mould (14c) forming a cavity which corresponds to a negative contour of the plastic container (20) to be formed, wherein between the blow mould side parts (14a, 14b) and the bottom mould (14c) at least a first parting plane (22) and a second parting plane (24) is present, wherein the first parting plane (22) extending between the two side parts (14a, 14b) and the second parting plane (24) extending between the side parts (14a, 14b) and the bottom mould (14c), wherein the blow mould side parts (14a, 14b) and the bottom mould (14c) can be separated from each other by the second parting plane (24) and the bottom mould (14c) can be removed from the blow mould side parts (14a, 14b) by a bottom lift. According to the invention, at least a part of the bottom contour (15b) of the bottom mould (14c) is arranged in the blow mould side parts (14a, 14b).

First claim

The invention claimed is:

1. Apparatus for forming plastic preforms into plastic containers, having at least one blow mould which has at least two blow mould side parts and a bottom mould, wherein the blow mould side parts and the bottom mould forming a cavity which corresponds to a negative contour of the plastic container to be formed, wherein between the blow mould side parts and the bottom mould at least a first parting plane and a second parting plane is present, wherein the first parting plane extending between the two side parts and the second parting plane extending between the side parts and the bottom mould, wherein the blow mould side parts and the bottom mould can be separated from each other by the second parting plane and the bottom mould can be removed from the blow mould side parts by a bottom lift, characterised in that at least a part of the bottom contour of the bottom mould is arranged in the blow mould side parts and a cut surface of the bottom mould has an undercut in the top view.

2. Apparatus according to claim 1 , characterised in that the second parting plane runs in a horizontal direction between the blow mould side parts and the bottom mould.

3. Apparatus according to claim 1 , characterised in that the first parting plane runs in a vertical direction between the two blow mould side parts.

4. Apparatus according to claim 1 , characterised in that the height of the bottom lift corresponds at least to the height of the bottom mould.

5. Apparatus according to claim 1 , characterised in that the height of the bottom mould and/or the second parting plane is less than half a container diameter of a container produced with the apparatus.

6. Apparatus according to claim 1 , characterised in that the blow-mould diameter is greater than or equal to 150 mm.

7. Apparatus according to claim 1 , characterised in that the height of the bottom mould for a container diameter of 105 mm is between 51 mm and 30 mm.

8. A blow mould for an apparatus according to claim 1 , comprising at least two blow mould side parts and a bottom mould, wherein the blow mould side parts and the bottom mould form a cavity, which corresponds to a negative contour of a plastic container to be moulded, wherein the bottom mould forms a contour of the container and including a standing area of the container and the blow mould side parts form a contour of the outer wall of the container, characterised in that at least a part of the bottom contour of the bottom mould is arranged in the blow mould side parts and/or the blow mould is a blow mould with which containers with a round cross-section can be produced and the bottom mould has a cross-section deviating from a round cross-section in a top view.

9. Apparatus for forming plastic preforms into plastic containers, having at least one blow mould which has at least two blow mould side parts and a bottom mould, wherein the blow mould side parts and the bottom mould forming a cavity which corresponds to a negative contour of the plastic container to be formed, wherein between the blow mould side parts and the bottom mould at least a first parting plane and a second parting plane is present, wherein the first parting plane extending between the two side parts and the second parting plane extending between the side parts and the bottom mould, wherein the blow mould side parts and the bottom mould can be separated from each other by the second parting plane and the bottom mould can be removed from the blow mould side parts by a bottom lift, characterised in that the blow mould is a blow mould with which containers with a round cross-section can be produced, and the bottom mould has a cross-section deviating from a round cross-section when viewed from above.

10. Apparatus according to claim 9 , characterised in that the second parting plane runs in a horizontal direction between the blow mould side parts and the bottom mould.

11. Apparatus according to claim 9 , characterised in that the first parting plane runs in a vertical direction between the two blow mould side parts.

12. Apparatus according to claim 9 , characterised in that the height of the bottom lift corresponds at least to the height of the bottom mould.

13. Apparatus according to claim 9 , characterised in that the height of the bottom mould and/or the second parting plane is less than half a container diameter of a container produced with the apparatus.

14. Apparatus according to claim 9 , characterised in that the blow-mould diameter is greater than or equal to 150 mm.

15. Apparatus according to claim 9 , characterised in that the height of the bottom mould for a container diameter of 105 mm is between 51 mm and 30 mm.

16. Apparatus according to claim 9 , characterised in that a cut surface of the bottom mould has an undercut in the top view.

17. A blow mould for an apparatus according to claim 9 , comprising at least two blow mould side parts and a bottom mould, wherein the blow mould side parts and the bottom mould form a cavity, which corresponds to a negative contour of a plastic container to be moulded, wherein the bottom mould forms a contour of the container and including a standing area of the container and the blow mould side parts form a contour of the outer wall of the container, characterised in that at least a part of the bottom contour of the bottom mould is arranged in the blow mould side parts and/or the blow mould is a blow mould with which containers with a round cross-section can be produced and the bottom mould has a cross-section deviating from a round cross-section in a top view.

Assignees

• Krones Ag

Inventors

• Geltinger Florian

Classifications

• B29C49/48 Primary

  Moulds · CPC title

• B29L2031/7158

  Bottles · CPC title

• B29C49/06

  Injection blow-moulding · CPC title

• B29C2049/4892

  Mould halves consisting of an independent main and bottom part · CPC title

• B29C49/54 Primary

  for undercut articles · CPC title