US 12,285,932 B2
Method of producing a cellulose-based product
Ludovicus Adriaan Maria Fransen, Rijkevorsel (BE); and Gert William Raf Willems, Antwerp (BE)
Assigned to Gate Gourmet Switzerland GmbH, Glattbrugg (CH)
Appl. No. 17/758,343
Filed by Gate Gourmet Switzerland GmbH, Glattbrugg (CH)
PCT Filed Jan. 21, 2021, PCT No. PCT/EP2021/051295
§ 371(c)(1), (2) Date Jul. 1, 2022,
PCT Pub. No. WO2021/148514, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 20153462 (EP), filed on Jan. 23, 2020; and application No. 20153939 (EP), filed on Jan. 27, 2020.
Prior Publication US 2023/0039678 A1, Feb. 9, 2023
Int. Cl. B32B 37/10 (2006.01); B32B 1/00 (2006.01); B32B 7/12 (2006.01); B32B 23/04 (2006.01)
CPC B32B 37/10 (2013.01) [B32B 1/00 (2013.01); B32B 7/12 (2013.01); B32B 23/04 (2013.01); B32B 2250/02 (2013.01); B32B 2255/02 (2013.01); B32B 2262/062 (2013.01); B32B 2307/7163 (2013.01); B32B 2309/02 (2013.01); B32B 2309/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of producing a cellulose-based product (103,700), wherein the method comprises the steps of:
(i) providing at least two layers including one first (104a) and one second (104b) layer, and wherein said first (104a) and second layer (104b) each comprise cellulose fibers, and wherein at least one side of said first (104a) and/or said second (104b) layer is pre-treated with an adhesive coating,
(ii) arranging said at least two layers including the one first (104a) and the one second (104b) layers in a superimposed relationship to each other in a forming mold (102) of a form press (101), thereby generating a stack (104) of said at least two layers including the one first (104a) and the one second (104b) layers, wherein said first (104a) and second (104b) layers are oriented within the stack (104) such that said at least one pre-treated side of said respective first (104a) and/or second (104b) layer is facing towards the superimposed layer, and
(iii) form pressing said stack (104) of at least two layers including the one first (104a) and the one second (104b) layers in a forming mold (102) at a forming temperature of at least 50° C. up to a forming end-pressure of at most 1100 MPa, into a cellulose-based product (103, 700) of a predetermined shape and a single layer configuration,
characterized in that
in said step (iii) said layers including said one first (104a) and said one second (104b) layers are moveable with respect to each other until said forming end-pressure is reached, wherein movement of said layers results in an edge of the cellulose-based product having a stairstep profile; and wherein the individual layers of the cellulose-based product are visible in said edge by eye to a customer.