Method of manufacturing a multi-layer packaging laminate and packaging laminate obtained by the method
AssigneeTetra Laval Holdings & Finance S.A.
InventorsMikael Berlin, Mats Bentmar, Katarina Flemmer
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Abstract
A multi-layer packaging laminate is produced by simultaneously applying at least two wet coating layers to a substrate web (10) in a slide coater or curtain coater having a slide block (14) over which laminar flow streams of coating liquid flow to reach the substrate web. At least one layer is less than 20 μm thick (wet) and at least one layer has oxygen barrier or scavenger properties.
Claims12
A method of producing a multi-layer packaging laminate comprising a substrate bearing at least two superposed coating layers, characterised in that the method comprises applying two or more wet coating layers to said substrate to provide wet superposed layers thereon and drying said layers.
A method as claimed in any preceding claim, wherein said wet coating layers are applied using a slide coater or a curtain coater.
A method as claimed-in any preceding claim, wherein the substrate is paper, paperboard, or plastics film, each optionally already bearing one or more coating layers.
A method as claimed in any preceding claim, further comprising applying one or more coating layers over the dried layers.
A method as claimed in any preceding claim, further comprising forming a package from said packaging material.
Dependencies are inferred from the claim text.