US 12,246,511 B2
Biaxially oriented thermoplastic polymer laminate films for luggage articles and methods of making the same
Pauline M. Koslowski, Berchem (BE); and Rik Hillaert, Oudenaarde (BE)
Assigned to Samsonite IP Holdings S.a r.l., Luxembourg (LU)
Filed by Samsonite IP Holdings S.a r.l., Luxembourg (LU)
Filed on Jun. 20, 2024, as Appl. No. 18/748,216.
Application 18/748,216 is a continuation of application No. 16/493,442, previously published as PCT/EP2018/056586, filed on Mar. 15, 2018.
Claims priority of application No. 17161218 (EP), filed on Mar. 15, 2017.
Prior Publication US 2024/0336026 A1, Oct. 10, 2024
Int. Cl. B32B 37/14 (2006.01); A45C 5/02 (2006.01); A45C 5/03 (2006.01); B32B 1/00 (2006.01); B32B 5/26 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/32 (2006.01); B32B 37/20 (2006.01); B32B 38/12 (2006.01); B29C 33/38 (2006.01); B29L 31/00 (2006.01)
CPC B32B 1/00 (2013.01) [A45C 5/02 (2013.01); A45C 5/03 (2013.01); B32B 5/26 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/32 (2013.01); B32B 37/144 (2013.01); B32B 37/206 (2013.01); B32B 38/12 (2013.01); A45C 2005/037 (2013.01); B29C 2033/385 (2013.01); B29C 2948/92152 (2019.02); B29L 2031/7418 (2013.01); B32B 2250/05 (2013.01); B32B 2250/242 (2013.01); B32B 2307/516 (2013.01); B32B 2307/518 (2013.01); B32B 2307/54 (2013.01); B32B 2307/546 (2013.01); B32B 2309/022 (2013.01); B32B 2323/10 (2013.01); B32B 2439/40 (2013.01); Y10T 428/13 (2015.01); Y10T 428/1352 (2015.01); Y10T 428/1362 (2015.01); Y10T 428/1372 (2015.01)] 18 Claims
OG exemplary drawing
 
1. A method of making a luggage shell, the method comprising:
providing a plurality of films;
laminating the plurality of films together to form a laminate; and
moulding the laminate to form a luggage shell;
wherein:
the films have a core of a biaxially oriented thermoplastic polymer and an outer layer of a thermoplastic polymer on each of the top and bottom side of the core; and
the films are laminated at a temperature of 120-190° C.; and
the laminate has a stiffness of 3.5-5 GPa in the transverse direction and a stiffness of 1.5-3 GPa in the longitudinal direction.