US 12,330,407 B2
Linerless non-top coated thermal printable material, method for producing the same and thermal label
Mika Anttila, Masku (FI); Elina Mattila, Köyliö (FI); and Arja Pylväs, Eura (FI)
Assigned to Jujo Thermal Oy, Kauttua (FI)
Filed by Jujo Thermal Oy, Kauttua (FI)
Filed on Jul. 20, 2023, as Appl. No. 18/355,440.
Claims priority of application No. 22187220 (EP), filed on Jul. 27, 2022.
Prior Publication US 2024/0034046 A1, Feb. 1, 2024
Int. Cl. B32B 37/00 (2006.01); B32B 21/02 (2006.01); B32B 21/04 (2006.01); B32B 37/24 (2006.01)
CPC B32B 37/156 (2013.01) [B32B 21/02 (2013.01); B32B 21/04 (2013.01); B32B 2037/243 (2013.01); B32B 2307/306 (2013.01); B32B 2307/538 (2013.01); B32B 2307/718 (2013.01); B32B 2307/726 (2013.01); B32B 2307/7376 (2023.05); B32B 2307/75 (2013.01); B32B 2309/02 (2013.01); B32B 2309/12 (2013.01); B32B 2309/14 (2013.01); B32B 2519/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for producing a linerless non-top coated thermal printable material, the method comprising:
preparing a thermal printable material by:
receiving a base printable material, wherein the base printable material being 75% w/w to 85% w/w of the linerless non-top coated thermal printable material;
applying a heat-resistant material on the base printable material, wherein the heat-resistant material being 12% w/w to 18% w/w of the linerless non-top coated thermal printable material; and
applying a heat-sensitive material on the heat-resistant material to produce the thermal printable material, wherein the heat-sensitive material being 3% w/w to 7% w/w of the linerless non-top coated thermal printable material; and
subjecting the thermal printable material to a supercalendering operation to achieve a smooth surface finish thereon, the supercalendering operation comprising passing the thermal printable material through at least two calender rolls at a temperature ranging from 30° C. to 80° C. rolling at a speed ranging from 150 m/min to 500 m/min at a pressure ranging from 50 bar to 120 bar, to obtain the linerless non-top coated thermal printable material.