US 12,480,259 B2
Multipart molds and three-dimensional pulp articles molded therefrom
Tahsin Dag, Cologne (DE); and Florian Barth, Cologne (DE)
Assigned to PAPACKS SALES GMBH, Cologne (DE)
Filed by PAPACKS SALES GMBH, Cologne (DE)
Filed on Feb. 7, 2025, as Appl. No. 19/048,195.
Application 19/048,195 is a continuation of application No. 18/915,989, filed on Oct. 15, 2024, granted, now 12,241,206.
Application 18/915,989 is a continuation of application No. 18/431,478, filed on Feb. 2, 2024, granted, now 12,146,268, issued on Nov. 19, 2024.
Prior Publication US 2025/0250746 A1, Aug. 7, 2025
Int. Cl. D21J 7/00 (2006.01); D21J 3/10 (2006.01); B33Y 80/00 (2015.01)
CPC D21J 7/00 (2013.01) [D21J 3/10 (2013.01); B33Y 80/00 (2014.12)] 19 Claims
OG exemplary drawing
 
1. A system for forming pulp products from a natural fiber pulp slurry, comprising:
a first mold block comprising a first mold screen fastened to a first vacuum block, wherein the first vacuum block is configured to receive a first fastener rim, wherein the first fastener rim secures the first mold screen to the first vacuum block;
a second mold block comprising a second mold screen fastened to a second vacuum block, wherein the second vacuum block is configured to receive a second fastener rim, wherein the second fastener rim secures the second mold screen to the second vacuum block; and
a base block comprising a base mold screen fastened to a base vacuum block;
wherein the first mold block is operable to interlock with the second mold block and the base block such that in a first position, the first mold screen, the second mold screen, and the base mold screen form a cavity;
wherein the base vacuum block, the first vacuum block, or the second vacuum block, is connected to a vacuum system; and
wherein the natural fiber pulp slurry comprises natural fibers, wherein the natural fiber pulp slurry is introduced into the cavity, wherein the natural fibers of the natural fiber pulp slurry aggregates on a porous surface of the first mold screen, the second mold screen, and the base mold screen.