PLASTIC PACKAGE CONTAINERS HAVING IMPROVED GAS BARRIER PROPERTIES
The invention provides a plastic packaging container designed to store items that are carbonated and/or oxygen-sensitive and includes: (a) a plastic body having an opening through which an oxygen-sensitive and/or carbonated item can pass, (b) a closure which seals the container's opening, and (...
Gespeichert in:
1. Verfasser: | |
---|---|
Format: | Patent |
Sprache: | eng ; fre |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The invention provides a plastic packaging container designed to store items that are carbonated and/or oxygen-sensitive and includes: (a) a plastic body having an opening through which an oxygen-sensitive and/or carbonated item can pass, (b) a closure which seals the container's opening, and (c) a label which covers at least 30 % of the plastic package body's exterior surface, wherein the closure and/or the label have enhanced gas barrier properties. The gas barrier label includes: (a) a layer of a thermoplastic, gas-permeable label material, and (b) a layer of a thermosetting gas barrier material. When a gas barrier label is used, its gas barrier layer is in intimate contact with the container's exterior surface. The gas barrier closure includes: (a) a thermoplastic, gas-permeable closure body, and (b) a layer of a thermosetting gas barrier material. The thermosetting gas barrier material used in making the label's and/or closure's gas barrier layer includes the reaction product of a polyamine (A) and polyepoxide (B), wherein polyamine (A) includes at least: (a) an initial polyamine; (b) an ungelled amine-epoxide adduct having active amine hydrogens which is the reaction product of the initial polyamine and at least: (i) epichlorohydrin, and (ii) a polyepoxide having a plurality of glycidyl groups linked to an aromatic member; or (c) initial polyamine reacted with formaldehyde and a phenol R -OH where R is an aromatic group or fused aromatic group which may contain alkyl substitutions of 1-4 carbon atoms.
L'invention concerne un conteneur d'emballage en plastique conçu pour conserver des produits gazéifiés et/ou sensibles à l'oxygène qui comporte: (a) un corps plastique présentant une ouverture permettant le passage du produit gazéifié et/ou sensible à l'oxygène, (b) une fermeture rendant étanche l'ouverture du récipient et (c) une étiquette recouvrant au moins 30 % de la surface extérieur du corps de l'emballage plastique, la fermeture et/ou l'étiquette présentant des propriétés d'étanchéité aux gaz renforcées. L'étiquette étanche aux gaz comporte: (a) une couche de matière d'étiquette thermoplastique, perméable au gaz, et (b) une couche de matière thermodurcissable étanche aux gaz. Lorsqu'on utilise une étiquette étanche aux gaz, sa couche étanche aux gaz est en contact étroit avec la surface extérieure du récipient. La fermeture étanche aux gaz comporte: (a) un corps de fermeture thermoplastique, perméable au gaz, et (b) une couche de matière thermodu |
---|