Process for producing a double-layer film
AssigneesAsahi Glass Company, Limited, Saint-Gobain Vitrage International
InventorsHiroshi Shimoda, Noriyuki Yoshihara, Yoshiyuki Kuwabara
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Abstract
A process for producing a double-layer film on a flat substrate by reactive casting employing two kinds of reaction-curable resin raw material mixtures substantially free from a solvent, which comprises casting onto the substrate a first unreacted liquid raw material mixture for the first layer, then casting onto the first layer a second unreacted liquid raw material mixture for the second layer while the first raw material mixture still retains its fluidity, and thereafter curing by reaction the two layers simultaneously.
Claims9
A process for producing a double-layer film on a flat substrate by reactive casting employing two different reaction-curable resin raw material mixtures substantially free from a solvent, which comprises casting onto the substrate a first unreacted liquid raw material mixture for the first layer, then casting onto the first layer a second unreacted liquid raw material mixture for the second layer while the first raw material mixture still retains its fluidity, and thereafter curing by reaction the two layers simultaneously, wherein each of the raw material mixtures for the two layers is a raw material mixture capable of forming a polyurethane resin and wherein said layers are transparent.
Dependencies are inferred from the claim text.