US 12,459,713 B2
Sheet-like composite, especially packaging laminate for dimensionally stable foodstuff containers, having a polymeric intermediate layer characterized by differential scanning calorimetry
Jannis Ochsmann, Frechen (DE); Michael Wolters, Heinsberg (DE); and Stefan Pelzer, Herzogenrath (DE)
Assigned to SIG SERVICES AG, Neuhausen am Rheinfall (CH)
Appl. No. 16/067,017
Filed by SIG SERVICES AG, Neuhaugen am Rheinfall (CH); and Sabine Wolters, Heinsberg (DE)
PCT Filed Dec. 21, 2016, PCT No. PCT/EP2016/082063
§ 371(c)(1), (2) Date Jun. 28, 2018,
PCT Pub. No. WO2017/114704, PCT Pub. Date Jul. 6, 2017.
Claims priority of application No. 102015226767.9 (DE), filed on Dec. 28, 2015; and application No. 102016209996.5 (DE), filed on Jun. 7, 2016.
Prior Publication US 2019/0009961 A1, Jan. 10, 2019
Int. Cl. B65D 65/40 (2006.01); B32B 1/00 (2006.01); B32B 3/26 (2006.01); B32B 7/12 (2006.01); B32B 15/085 (2006.01); B32B 15/09 (2006.01); B32B 15/12 (2006.01); B32B 15/18 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/10 (2006.01); B32B 27/20 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 29/00 (2006.01); B32B 29/06 (2006.01); B29C 48/21 (2019.01); B29K 23/00 (2006.01); B29K 601/00 (2006.01); B29K 705/02 (2006.01); B29L 31/00 (2006.01); B65D 85/80 (2006.01)
CPC B65D 65/40 (2013.01) [B32B 1/00 (2013.01); B32B 3/266 (2013.01); B32B 7/12 (2013.01); B32B 15/085 (2013.01); B32B 15/09 (2013.01); B32B 15/12 (2013.01); B32B 15/18 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/10 (2013.01); B32B 27/20 (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 29/005 (2013.01); B32B 29/06 (2013.01); B29C 48/21 (2019.02); B29K 2023/0633 (2013.01); B29K 2601/00 (2013.01); B29K 2705/02 (2013.01); B29K 2995/0069 (2013.01); B29L 2031/7166 (2013.01); B32B 2255/10 (2013.01); B32B 2255/20 (2013.01); B32B 2255/205 (2013.01); B32B 2264/102 (2013.01); B32B 2264/108 (2013.01); B32B 2270/00 (2013.01); B32B 2307/30 (2013.01); B32B 2307/31 (2013.01); B32B 2307/402 (2013.01); B32B 2307/41 (2013.01); B32B 2307/514 (2013.01); B32B 2307/54 (2013.01); B32B 2307/718 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/7265 (2013.01); B32B 2307/748 (2013.01); B32B 2435/00 (2013.01); B32B 2439/40 (2013.01); B32B 2439/62 (2013.01); B32B 2439/70 (2013.01); B65D 85/80 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A laminate including as layers of a layer sequence, in a direction from an external side of the laminate to an internal side of the laminate,
a) a polymeric external layer, wherein the polymeric external layer comprises a polyolefin,
b) a carrier layer, wherein the carrier layer includes a material selected from the group consisting of cardboard, paperboard, paper, and a combination of at least two thereof;
c) a polymeric intermediate layer, wherein the polymeric intermediate layer comprises a polyolefin, and
d) a barrier layer,
where a graph of differential scanning calorimetry of the polymeric intermediate layer includes a peak A at a temperature TA and a peak B at a temperature TB,
where the temperature TB is more than the temperature TA,
where a width of the peak B is less by at least 3° C. than a width of the peak A,
where the polymeric intermediate layer comprises a first intermediate layer and a second intermediate layer, wherein the first intermediate layer comprises from 20-70 wt. % HDPE, based on the total weight of the first intermediate layer, and 30-80% wt. % of LDPE, based on the total weight of the first intermediate layer; and
where the polyolefin in the polymeric intermediate layer does not include LLDPE;
wherein the polyolefin in the polymeric external layer does not consist of a polyethylene prepared using a metallocene catalyst (mPE).