Container, preform assembly and method and apparatus for forming containers

Patent metadata

Field	Value
Publication number	US-11667435-B2
Application number	US-202016892209-A
Country	US
Kind code	B2
Filing date	Jun 3, 2020
Priority date	Nov 13, 2012
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

Container comprising an inner container and an outer container with facing surfaces, wherein at least part of at least one of the facing surfaces has a surface roughness higher than about 0.1 Ra and/or wherein the difference in roughness of the facing surfaces is at least over a part more than about 0.1 Ra.

First claim

The invention claimed is:

1. A container, integrally blow moulded from a preform or preform assembly, comprising an inner container and an outer container with facing surfaces, wherein one of the inner and the outer container is transparent or translucent, and the other of the inner and outer container is opaque or non-transparent, wherein at least part of at least one of the facing surfaces has a surface roughness higher than about 0.1 Ra and/or wherein the difference in roughness of said facing surfaces is at least over a part more than about 0.1 Ra.

2. The container according to claim 1 , wherein the outer container is coloured.

3. The container according to claim 1 , wherein the inner container has a light reflecting outer appearance.

4. The container according to claim 1 , wherein the inner container is silver coloured.

5. The container according to claim 1 , wherein said at least one surface is the outer surface of the inner container.

6. The container according to claim 1 , wherein the inner and outer container have a neck region, wherein an outer surface part of the neck region of the inner container and/or an inner surface part of the neck region of the outer container has a surface roughness of at least 0.1 Ra.

7. The container according to claim 1 , wherein said surface roughness is at least 0.25 Ra.

8. The container according to claim 7 , wherein said roughness is at least 0.30 Ra.

9. The container according to claim 1 , wherein the inner container and/or outer container comprises particles enclosed in a wall, between plastic forming chains of the plastic wall of the container.

10. The container according to claim 9 , wherein the particles are made of or at least contain material different from the plastic of the wall of said container.

11. The container according to claim 9 , wherein the particles are or contain flakes.

12. The container according to claim 9 , wherein the particles form between 0.5 and 5% by weight of the inner container and/or the outer container.

13. The container according to claim 9 , wherein the particles are made of or at least contain metal.

14. The container according to claim 9 , wherein the particles are or contain metal flakes.

15. The container according to claim 9 , wherein the particles are or contain aluminium flakes.

16. The container according to claim 9 , wherein the particles form between 0.5% and 2.5% by weight of the inner container and/or the outer container.

17. The container according to claim 9 , wherein the particles form between 0.5% and 2% by weight of the inner container and/or the outer container.

18. The container according to claim 1 , wherein said surface roughness is between 0.25 and 2.

19. The container according to claim 1 , wherein said surface roughness is between 0.25 and 1.

20. A container, integrally blow moulded from a preform assembly, the container comprising an inner container and an outer container with facing surfaces, wherein one of the inner and the outer container is transparent or translucent, and the other of the inner and outer container is opaque or non-transparent, wherein the container is integrally blow moulded from a preform-in-preform, wherein at least one of the preforms has been roughened at least in part, after injection moulding thereof, and/or wherein at least one of the preforms has been injection moulded in a mould having an at least partly roughened mold surface and/or wherein at least one of the preforms is provided with a foamed surface layer of plastic.

21. A container, integrally blow moulded from a preform assembly, comprising an inner container and an outer container with facing surfaces, wherein one of the inner and the outer container is transparent or translucent, and the other of the inner and outer container is opaque or non-transparent, wherein at least one of or both of the inner container and the outer container are made of PET or a PET blend, or another crystalline or semi-crystalline plastic, wherein the inner container is connected to the outer container at a neck region closing off a space between the inner and the outer container, wherein at least one opening is provided into said space for introducing a pressurizing medium into said space, wherein the container has a body in which the outer container abuts the inner container and wherein the inner container can be compressed by said pressurizing medium at a pressure below 2 Bar absolute.

22. A container blow moulded from a preform assembly comprising a first plastic preform which has been inserted in a second plastic preform, wherein a first layer of the container is formed from the first preform and a second layer, outside the first layer, is formed from the second preform, wherein the plastics material of the first preform has been stretched further for forming the first layer than the plastics material of the second preform for forming the second layer.

23. A container, integrally blow moulded from a preform assembly, comprising an inner container and an outer container with facing surfaces, wherein one of the inner and the outer container is transparent or translucent, and the other of the inner and outer container is opaque or non-transparent, wherein the inner and outer container have a neck region, wherein an outer surface part of the neck region of the inner container and/or an inner surface part of the neck region of the outer container has a surface roughness of at least 0.1 Ra and wherein the further surface parts of the outer surface of the inner container and the inner surface of the outer container of at least body forming portions thereof either have the same surface roughness or a lower surface roughness.

24. A preform set for integrally blow moulding the container, comprising an inner container and an outer container with facing surfaces, wherein one of the inner and the outer container is transparent or translucent, and the other of the inner and outer container is opaque or non-transparent, comprising at least an outer preform and an inner preform, fitting at least partly inside the outer preform, both having a neck forming portion, a shoulder forming portion and a body forming portion, wherein at least a first of the inner and outer preform has a surface region in contact with the other of the inner and outer preform, wherein:
at least part of said region has a surface roughness of at least 0.1 Ra and/or a surface roughness which is at least 0.1 Ra higher than the surface roughness of the surface area of the other of the inner and outer preform with which it is in contact, and/or
at least part of said region has a surface roughness such that in a container integrally blow moulded from said assembly of preforms the surface area of the container formed from said surface region has a surface roughness of at least 0.1 Ra and/or a surface roughness of at least 0.1 Ra higher than the surface roughness of an adjacent surface area of the adjacent container.

Assignees

• Heineken Supply Chain Bv

Inventors

• Paauwe Arie Maarten
• Bax Bart Jan
• Blom Harold Marcel

Classifications

• B29C2949/3028

  having three or more components · CPC title

• B29K2105/04

  cellular or porous · CPC title

• B29C2949/077

  characterised by the neck · CPC title

• B29C2949/3008

  at neck portion · CPC title

• B29B11/16

  comprising fillers or reinforcement {(non-woven fabrics per se D04H1/00, D04H3/00)} · CPC title