CPC B29C 64/112 (2017.08) [B29C 64/106 (2017.08); B29C 64/118 (2017.08); B33Y 80/00 (2014.12); D21F 1/0027 (2013.01); D21F 1/0063 (2013.01); D21F 11/006 (2013.01); B29L 2031/733 (2013.01); B33Y 10/00 (2014.12)] | 23 Claims |
1. A method for making a three-dimensional papermaking belt configured for use in forming, pressing, drying or molding of fibrous web, wherein the process comprises forming the belt by 3D printing of a polymeric material having a plurality of vacuum breaking zones configured to limit an amount of paper fibers pulled through open areas formed in the belt above the vacuum breaking zones, wherein each vacuum breaking zone comprises a crisscross pattern of material disposed within a respective one of the open areas.
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