公开(公告)号：US20240167230A1

公开(公告)日：2024-05-23

申请号：US18420761

申请日：2024-01-24

Applicant: TOPPAN INC.

Inventor： Megumi ISHII ,  Koji SAKAIRI

IPC: D21J3/10 ,  D21H15/02

CPC classification number: D21J3/10 ,  D21H15/02

Abstract: A molded pulp article that has a small thickness and high strength and is excellent in release properties at the time of production, comprising a percentage of fibers having a fiber length of 1 mm or less to pulp is in the range of 35% to 50%, the pulp has an average fiber length in the range of 1.2 mm to 1.5 mm, the molded pulp article has a density is in the range of 0.65 g/cm3 to 1.3 g/cm3, and the molded pulp article has a nitrogen content is in the range of 400 μg/g to 2000 μg/g.

公开(公告)号：US20230331425A1

公开(公告)日：2023-10-19

申请号：US18213650

申请日：2023-06-23

Applicant: TOPPAN INC.

Inventor： Megumi ISHII

IPC: B65D1/34 ,  D21J3/00

CPC classification number: B65D1/34 ,  D21J3/00

Abstract: A pulp molded product includes a surface that has a region with an arithmetic average roughness Ra of 50 μm or less. A method of producing a pulp molded product includes: preparing a slurry that contains pulp having an average fiber length of less than 3.0 mm and water; depositing the pulp on a paper-making mold having a solid shape to form a pulp layer; dehydrating the pulp layer to obtain an undried intermediate molded product; and heating the undried intermediate molded product while sandwiching the intermediate molded product between a male mold and a female mold and applying pressure to the sandwiched intermediate molded product.

公开(公告)号：US20240200275A1

公开(公告)日：2024-06-20

申请号：US18420148

申请日：2024-01-23

Applicant: TOPPAN INC.

Inventor： Koji SAKAIRI ,  Megumi ISHII

IPC: D21J3/10 ,  D21H21/18

CPC classification number: D21J3/10 ,  D21H21/18

Abstract: A molded pulp article that has a high strength and allows drying during production to be completed in a short time, having a percentage of fibers having a fiber length of 1 mm or less in pulp is in the range of 15% to 35%, the pulp has an average fiber length in the range of 1.5 mm to 2.5 mm, the molded pulp article has a nitrogen content in the range of 200 μg/g to 1800 μg/g, and the molded pulp article has a thickness in the range of 0.8 mm to 2.0 mm.