Robust packaging laminate, method for manufacturing of the packaging laminate and packaging container produced therefrom

摘要

A packaging laminate comprising a core layer of paper or carton with through-going holes, openings or slits, a first layer of heat sealable thermoplastic material applied on the outermost side of the packaging laminate, a second layer of heat sealable thermoplastic material applied on the other, innermost side of the packaging laminate, one or more barrier layers applied between the core layer and the innermost thermoplastic layer, the thermoplastic material and barrier layers all being laminated to each other within the regions of said holes to form a membrane of barrier and thermoplastic material layers. A method for manufacturing of the packaging laminate and a packaging container that is made from the packaging laminate.

主权项

1. Packaging laminate comprising a core layer of paper or carton with through-going holes, openings or slits, a first layer of heat sealable thermoplastic material applied on an outermost side of the packaging laminate and forming an outermost thermoplastic layer, a second layer of heat sealable thermoplastic material applied on an innermost side of the packaging laminate and forming an innermost thermoplastic layer, one or more gas barrier layers applied between the core layer and the innermost thermoplastic layer, the innermost and outermost thermoplastic and gas barrier layers all extending throughout the packaging laminate, including regions of the core layer at which are located the through-going holes, openings or slits, and all being laminated to each other within the regions of said through-going holes, openings or slits to form a membrane of the barrier and innermost and outermost thermoplastic layers, the packaging laminate further comprising a first additional stabilizing paper layer between the core layer and the gas barrier layers, the first additional stabilizing paper layer extending throughout the packaging laminate such that a robust membrane is formed within the regions of the through-going holes, openings or slits, the robust membrane also comprising said first additional stabilizing paper layer.