Select the suitable polyurethane resin for gravure laminationink
Apr 01, 2024
To select the suitable polyurethane resin for gravure lamination ink, the following several key factors need to be considered:
Printing substrate: Determine the type of substrate on which the ink will be applied, such as paper, plastic film, etc. Different substrates may require polyurethane resin with specific properties.
Adhesion: Ensure that the polyurethane resin can provide good adhesion on the substrate to prevent the ink from peeling off.
Solvent resistance: Select the polyurethane resin with sufficient solvent resistance according to the type of solvent the ink comes into contact with.
Elasticity and toughness: Consider the bending, folding, or stretching that the printed matter may undergo, and select the resin with appropriate elasticity and toughness.
Drying speed: Select the polyurethane resin with a drying speed that meets the requirements according to the production efficiency requirements.
Weather resistance: If the printed matter needs to be exposed in the outdoor environment, select the resin with good weather resistance.
Chemical stability: Ensure that the polyurethane resin can tolerate the chemicals that may be encountered in the printing process.
Viscosity and fluidity: Select the resin with suitable viscosity and fluidity according to the requirements of the printing equipment and process.
Compatibility: Be compatible with other ink components and additives to avoid adverse reactions.
Cost: Consider cost factors on the premise of meeting performance requirements.
Supplier reputation: Select reliable suppliers to ensure product quality and technical support.
Technical data and test reports: Refer to the technical data and related test reports provided by the supplier to understand the performance characteristics of the resin.
Sample test: Conduct sample tests under actual printing conditions to assess whether the performance of the polyurethane resin meets the requirements.
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