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This invention describes a way to 3D print polishing pads using a special liquid resin. The resin is made from a semi-crystalline material like a urethane acrylate, combined with other liquid acrylates and a light-sensitive chemical. When droplets of this resin are precisely deposited and cured with UV light, they build up layer by layer to form a polishing pad. The claims specifically narrow the resin to include isobornyl acrylate, 3,3,5-trimethylcyclohexyl acrylate, and 1,4-butanediol diacrylate.
Why it matters: Filed in 2023, the cost and precision of additive manufacturing systems capable of dispensing viscous, multi-component resins have likely improved, making the fabrication of these specialized polishing pads more feasible. Advances in UV-curable material science may also simplify custom resin formulation.
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