Packaging material and packaging container having an opening device made therefrom

Patent metadata

Field	Value
Publication number	US-2016325902-A1
Application number	US-201415109295-A
Country	US
Kind code	A1
Filing date	Dec 22, 2014
Priority date	Dec 30, 2013
Publication date	Nov 10, 2016
Grant date	—

Abstract

Described herein are packaging materials and their use in manufacturing packaging containers having an opening device, and intended for food products.

First claim

1 . A packaging material for a packaging container for liquid or semi-liquid food, comprising a bulk layer, which on one side has a heat-sealing layer, and wherein the packaging material comprises one or more weakening(s) in direct or indirect contact with an attenuation or a hole in the packaging material.

2 . The packaging material according to claim 1 , wherein the packaging material additionally comprises a decor layer arranged on an opposite side of the heat-sealing layer.

3 . The packaging material according to claim 1 , wherein the packaging material additionally comprises a barrier layer arranged between the bulk layer and the heat-sealing layer and a laminate layer, which is arranged between the barrier layer and the bulk layer.

4 . The packaging material according to claim 1 , wherein an adhesive is arranged between the barrier layer and the heat-sealing layer.

5 . The packaging material according to claim 1 , wherein the bulk layer is a paper or paperboard layer; and/or the barrier layer is a barrier film or coating of aluminium foil; and/or the decor layer is a thermoplastic polyolefin; and/or the laminate layer is a thermoplastic polyolefin; and/or the heat-sealing layer is a thermoplastic polyolefin.

6 . The packaging material according to claim 5 , wherein the thermoplastic polyolefin independently is selected from polyethylene and polypropylene.

7 . The packaging material according to claim 1 , wherein the attenuation is comprised of one or more of the following: the heat-sealing layer, the adhesive, the barrier layer, and the laminate layer and is not comprising the bulk layer.

8 . The packaging material according to claim 7 , wherein the attenuation is comprised of at least the heat-sealing layer and the barrier layer.

9 . The packaging material according to claim 1 , wherein the bulk layer comprises a cut-out making up part of the attenuation or hole.

10 . The packaging material according to claim 1 , wherein the attenuation or hole provides a material bridge of an injection moulded opening device.

11 . The packaging material according to claim 1 , wherein the weakening at least partly makes up a consumer opening area.

12 . A method of manufacturing a packaging container using a packaging material according to claim 1 ,
arranging, on one side of the packaging material, a first mould portion comprising at least a first mould cavity, arranging a second mould portion comprising at least a second mould cavity on an opposite side of the first mould portion, wherein the first mould cavity at least partly overlaps the second mould cavity, injecting a plastic melt into at least one of the mould cavities, allowing the plastic melt to come through the packaging material in an overlapping area in order to form a material bridge, allowing the plastic melt to flow into at least the opposite mould cavity and removing the first and the second mould portions, obtaining a packaging material comprising an opening device, forming the packaging material comprising the opening device to a desired shape, filling and sealing the formed packaging material with a liquid or semi-liquid food product, and obtaining a packaging container having an opening device.

13 . The method according to claim 12 , wherein the first mould portion is at least partially arranged over the attenuation or hole of the packaging material.

14 . The method according to claim 12 , wherein the plastic melt generates a hole in the packaging material when coming through the packaging material.

15 . The method according to claim 12 , wherein at least part of the overlapping area forms part of the attenuation or hole.

16 . A packaging container comprising a packaging material laminate and a plastic opening device and a consumer opening area and wherein the plastic opening device comprises a first portion on an outside of the packaging container connected via a material bridge to a second portion on an inside of the packaging container, the packaging material laminate extending within the consumer opening area such that it is ruptured on using the opening device to open the consumer opening area.

17 . The packaging container comprising a weakening which at least partly defines the consumer opening area.

18 . The packaging container according to claim 16 , wherein the packaging container is an aseptic packaging container.

Assignees

• Tetra Laval Holdings & Finance

Inventors

• Björk Jonas
• Andersson Pärm
• Håkansson Bengt

Classifications

• B32B27/08

  of synthetic resin · CPC title

• B65D85/72

  for edible or potable liquids, semiliquids, or plastic or pasty materials · CPC title

• B65D75/5838 Primary

  combined with separate fixed tearing means, e.g. tabs · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B15/085

  comprising polyolefins · CPC title