US 12,441,024 B2
Planar material and method for the production thereof
Roger Braun, Willisau (CH); Joachim Hasch, Berlin (DE); Volker Schwind, Berlin (DE); and Norbert Kalwa, Horn—Bad Meinberg (DE)
Assigned to SWISS KRONO TEC AG, Lucerne (CH)
Appl. No. 17/604,532
Filed by SWISS KRONO TEC AG, Lucerne (CH)
PCT Filed Jan. 9, 2020, PCT No. PCT/EP2020/050451
§ 371(c)(1), (2) Date Oct. 18, 2021,
PCT Pub. No. WO2020/211988, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 19170159 (EP), filed on Apr. 18, 2019; and application No. 19183998 (EP), filed on Jul. 2, 2019.
Prior Publication US 2022/0203574 A1, Jun. 30, 2022
Int. Cl. B27N 3/00 (2006.01); B27N 1/00 (2006.01); B27N 3/04 (2006.01); C08L 61/28 (2006.01)
CPC B27N 3/002 (2013.01) [B27N 1/006 (2013.01); B27N 3/04 (2013.01); C08L 61/28 (2013.01); C08L 2205/03 (2013.01); C08L 2205/06 (2013.01); C08L 2205/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for producing a planar material, comprising lignocellulose fibers (5) and a binder comprising a binding agent and a plasticizing additive, wherein the proportion of the binding agent with the plasticizing additive is more than 50 wt % of the planar material (1), wherein the plasticizing additive is not used as the main component of the binder, comprising the steps of:
providing lignocellulose fibers (5);
providing the binding agent, wherein the binding agent has melamine resin, formaldehyde resin, phenol resin, methylene diphenylisocyanate (MDI), also in emulsified form as eMDI, polymeric diphenylmethane diisocyanate (PDMI), polyurethane, or mixtures of the aforementioned binding agents as well as the plasticizing additive;
applying the binding agent with the plasticizing additive to the fibers (5), wherein the plasticizing additive is applied with the binding agent to the fibers,
forming a fiber cake from the fibers provided with the binding agent and with the plasticizing additive;
pressing the fiber cake in a press while curing the binding agent to create a planar material (1) having a single layer from an upper face (2) to a lower face (3) of the planar material, wherein the plasticizing additive and the binding agent are used in a ratio of 0.2:1 to 0.01:1.