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AssigneeTetra Laval Holdings & Finance S.A.
InventorsLars Lofgren, Peter Frisk
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A laminated material for the manufacture of packing containers with good gas and aroma barrier properties, and a method for the manufacture of the laminated material. The laminated material has a base layer (18) and a barrier layer (19) of inorganic material of a thickness of only 50-500 .ANG. serving as a gas and aroma barrier. The barrier layer (19) is applied to the base layer (18) by means of vacuum deposition and bonded to the base layer by means of at least one intermediate layer (22) of bonding agent. To facilitate the conversion of the material to packing containers the barrier layer (19) is omitted along such areas (17a and 17b) of the material which are intended to be folded against, and combined with, one another by heat-sealing during the manufacture of the said containers.
A method for the manufacture of a laminated material for the manufacture of packing containers with good gas and aroma barrier properties, comprising coating a first side of a polymer carrier with a 50-500 .ANG. thick layer of silicon dioxide or silicon nitride by means of vacuum deposition, and bonding a second side of the polymer carrier to a first side of a base layer having first and second sides, by means of an intermediate layer of bonding agent.
A method for the manufacture of a laminated material for the manufacture of packing containers with good gas and aroma barrier properties, comprising coating one side of a polymer carrier with a 50-500 .ANG. thick layer of silicon dioxide or silicon nitride by means of vacuum deposition and transferring and bonding the whole, or pans, of the vacuum-deposited layer to a base layer by means of a hot stamp technique.
A method for the manufacture of a laminated material for the manufacture of packing containers with good gas and aroma barrier properties, comprising:
Dependencies are inferred from the claim text.