US 12,421,433 B2
Method of manufacturing self-adhesive polyurethane substrates via selective photo-polymerization
Junyeob Yeo, Daegu (KR); Taeseung Hwang, Daegu (KR); and Hee Jin Lee, Daegu (KR)
Assigned to KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Daegu (KR)
Filed by KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Daegu (KR)
Filed on Aug. 10, 2023, as Appl. No. 18/232,775.
Claims priority of application No. 10-2022-0099764 (KR), filed on Aug. 10, 2022.
Prior Publication US 2024/0052218 A1, Feb. 15, 2024
Int. Cl. C09J 175/00 (2006.01); A61B 5/00 (2006.01); A61F 7/00 (2006.01); C09J 9/02 (2006.01); C09J 11/04 (2006.01); C09J 11/06 (2006.01)
CPC C09J 175/00 (2013.01) [A61B 5/6832 (2013.01); A61F 7/007 (2013.01); C09J 9/02 (2013.01); C09J 11/04 (2013.01); C09J 11/06 (2013.01); A61F 2007/0052 (2013.01); C09J 2301/416 (2020.08); C09J 2301/50 (2020.08)] 13 Claims
OG exemplary drawing
 
1. A method of manufacturing a self-adhesive polyurethane using selective photo-polymerization, the method comprising:
manufacturing a mixed resin by mixing a urethane acrylate oligomer and a photoinitiator;
depositing the mixed resin to manufacture a polyurethane substrate; and
manufacturing a self-adhesive polyurethane substrate by performing the selective photo-polymerization of the polyurethane substrate deposited using a laser device,
wherein the selective photo-polymerization is selectively photo-polymerizing a polyurethane substrate and modifying a crosslinked network of the polyurethane substrate by adjusting a laser scanning speed and a laser scanning spacing distance of the laser device to improve self-adhesiveness and ductility of a photo-polymerized polyurethane substrate.