公开(公告)号：US20230138993A1

公开(公告)日：2023-05-04

申请号：US17944874

申请日：2022-09-14

申请人： Footprint LLC

发明人： Yoke Dou Chung ,  Yiyun Zhang ,  Chee Lee

IPC分类号： D21J3/10 ,  D21H21/20 ,  D21H21/16 ,  D21H17/28 ,  D21H17/17 ,  D21H11/14 ,  D21H11/02 ,  A47G19/22

摘要： A fiber-based, plastic-free drinking cup is formed by providing a fiber-based slurry comprising a hydrophobic additive and a strength additive, then forming a drinking cup component by compressing and drying the fiber-based slurry in a form press assembly having an internal shape characterized by a conic frustum. The fiber-based slurry may include a dry pulp mixture of virgin fiber and recycled fiber, the hydrophobic additive is 1.0-10.0% of the dry pulp weight, and the strength additive is 1.0-10.0% of the dry pulp weight. In particular, the fiber-based slurry may include about 50% bleached hardwood, about 50% bleached softwood, about 2.5% strength additive, and about 3.5% hydrophobic additive by dry pulp weight.