Method for producing a planar polymer stack
AssigneeArkema France
InventorXavier Chevalier
Life of this patent
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Abstract
The invention relates to a method for manufacturing a flat polymeric stack, said stack comprising one or more first and one second layer of (co)polymer (20, 30) stacked one on the other, the first underlying (co)polymer layer (20) not having undergone any prior treatment allowing its crosslinking, at least one of the (co)polymer layers initially being in a liquid or viscous state, said method being characterized in that the upper layer (30), known as the top coat (TC), is deposited on the first layer (20) in the form of a prepolymer composition (pre-TC), comprising one or more monomer(s) and/or dimer(s) and/or oligomer(s) and/or polymer(s) in solution, and in that it is then subjected to a heat treatment capable of causing a crosslinking reaction of the molecular chains within said layer (30, TC).
Claims22
A method for manufacturing a flat polymeric stack, comprising depositing on a substrate a first layer of non-crosslinked (co)polymer, and then a second layer of (co)polymer, at least one of the first and second layers initially being in a liquid or viscous state, wherein, at the time of the deposition of the second layer on the first layer, the second layer is in the form of a prepolymer composition (pre-TC) comprising one or more monomer(s) and/or dimer(s) and/or oligomer(s) and/or polymer(s) in solution, and wherein an additional step comprises submitting said second layer to a localized heat treatment capable of causing a crosslinking reaction of the one or more monomer(s) and/or dimer(s) and/or oligomer(s) and/or polymer(s) within selected locations of said second layer and allowing the production of a layer having selectively crosslinked top coat (TC) areas.
Dependencies are inferred from the claim text.