US 11,654,662 B2
Laminated packaging material, packaging containers manufactured therefrom
Nils Toft, Lund (SE); Ulf Nyman, Eslöv (SE); Peter Frisk, Malmö (SE); Alain Collaud, St-Aubin (CH); Peter Öhman, Lund (SE); and Mats Aldén, Munka Ljungby (SE)
Assigned to TETRA LAVAL HOLDINGS & FINANCE S.A., Pully (CH)
Appl. No. 15/779,358
Filed by TETRA LAVAL HOLDINGS & FINANCE S.A., Pully (CH)
PCT Filed Nov. 25, 2016, PCT No. PCT/EP2016/078755
§ 371(c)(1), (2) Date May 25, 2018,
PCT Pub. No. WO2017/089508, PCT Pub. Date Jun. 1, 2017.
Claims priority of application No. 15196867.4 (EP), filed on Nov. 27, 2015.
Prior Publication US 2018/0311940 A1, Nov. 1, 2018
Int. Cl. B32B 1/02 (2006.01); B32B 27/10 (2006.01); B32B 5/20 (2006.01); B32B 7/12 (2006.01); B32B 29/00 (2006.01); B65D 5/74 (2006.01); B65D 5/06 (2006.01); B32B 23/00 (2006.01); B32B 15/08 (2006.01); B32B 29/08 (2006.01); B32B 27/36 (2006.01); B32B 15/09 (2006.01); B32B 23/04 (2006.01); B32B 15/088 (2006.01); B32B 5/18 (2006.01); B32B 15/085 (2006.01); B32B 15/082 (2006.01); B32B 27/30 (2006.01); B32B 5/26 (2006.01); B32B 27/32 (2006.01); B32B 29/06 (2006.01); B32B 23/06 (2006.01); B32B 27/34 (2006.01); B32B 27/12 (2006.01); B32B 27/08 (2006.01); B32B 23/08 (2006.01); B32B 7/04 (2019.01); B32B 29/02 (2006.01); B32B 7/022 (2019.01); B32B 37/12 (2006.01); B32B 37/18 (2006.01); B65D 65/40 (2006.01); B65D 85/72 (2006.01); B32B 1/08 (2006.01); B65D 8/00 (2006.01)
CPC B32B 27/10 (2013.01) [B32B 5/18 (2013.01); B32B 5/20 (2013.01); B32B 5/26 (2013.01); B32B 7/022 (2019.01); B32B 7/04 (2013.01); B32B 7/12 (2013.01); B32B 15/08 (2013.01); B32B 15/082 (2013.01); B32B 15/085 (2013.01); B32B 15/088 (2013.01); B32B 15/09 (2013.01); B32B 23/00 (2013.01); B32B 23/046 (2013.01); B32B 23/048 (2013.01); B32B 23/06 (2013.01); B32B 23/08 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/304 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 27/325 (2013.01); B32B 27/327 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 29/00 (2013.01); B32B 29/002 (2013.01); B32B 29/005 (2013.01); B32B 29/02 (2013.01); B32B 29/06 (2013.01); B32B 29/08 (2013.01); B32B 37/12 (2013.01); B32B 37/182 (2013.01); B65D 5/065 (2013.01); B65D 5/067 (2013.01); B65D 5/746 (2013.01); B65D 65/40 (2013.01); B65D 85/72 (2013.01); B32B 2250/00 (2013.01); B32B 2250/26 (2013.01); B32B 2255/12 (2013.01); B32B 2255/205 (2013.01); B32B 2266/00 (2013.01); B32B 2266/02 (2013.01); B32B 2307/31 (2013.01); B32B 2307/402 (2013.01); B32B 2307/4023 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/41 (2013.01); B32B 2307/50 (2013.01); B32B 2307/514 (2013.01); B32B 2307/516 (2013.01); B32B 2307/518 (2013.01); B32B 2307/538 (2013.01); B32B 2307/718 (2013.01); B32B 2307/72 (2013.01); B32B 2307/724 (2013.01); B32B 2307/726 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/7265 (2013.01); B32B 2307/75 (2013.01); B32B 2439/00 (2013.01); B32B 2439/40 (2013.01); B32B 2439/60 (2013.01); B32B 2439/62 (2013.01); B32B 2439/70 (2013.01); B65D 15/08 (2013.01)] 21 Claims
OG exemplary drawing
 
1. Laminated cellulose-based, liquid- or semi-liquid food packaging material, for heat sealing into aseptic packaging containers, comprising a bulk material layer of paper, paperboard or other cellulose-based material, an innermost, heat sealable and liquid-tight layer of a thermoplastic polymer, the innermost polymer layer intended to be in direct contact with the packaged liquid- or semi-liquid food, a barrier layer laminated between the bulk layer and the innermost layer, wherein the barrier layer is a compact-surface barrier paper coated with a pre-coating material so that the compact-surface barrier paper has a pre-coating surface and subsequently further coated with a vapour deposition barrier coating onto the pre-coating surface, the pre-coating material being a barrier material selected from the group consisting of polyvinyl alcohol (PVOH), ethylene vinyl alcohol (EVOH), starch and starch derivatives, cellulose and cellulose derivatives, and other polysaccharides and polysaccharide derivatives, polyvinylidene chloride (PVDC), and polyam ides, the compact-surface barrier paper having a density of 800 kg/m3 or higher, a surface smoothness value below 300 ml/minute Bendtsen (ISO 8791-2), a thickness of 60 μm or lower, a grammage of from 20 to 40 g/m2, a wet strength from 0.4 to 0.6 kN/m (ISO 3781) and an air permeance below 2.0 nm/Pas (SCAN P26).