US 12,240,210 B2
Laminate and container and package for food
Yoshiyuki Nishimiya, Osaka (JP); and Yasutaka Yanase, Osaka (JP)
Assigned to EARTH CREATE CO., LTD., Osaka (JP)
Appl. No. 17/904,037
Filed by EARTH CREATE CO., LTD., Osaka (JP)
PCT Filed Feb. 12, 2021, PCT No. PCT/JP2021/005195
§ 371(c)(1), (2) Date Aug. 11, 2022,
PCT Pub. No. WO2021/162080, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 2020-021483 (JP), filed on Feb. 12, 2020.
Prior Publication US 2023/0118439 A1, Apr. 20, 2023
Int. Cl. B32B 27/20 (2006.01); B32B 7/02 (2019.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B65D 65/40 (2006.01)
CPC B32B 27/20 (2013.01) [B32B 7/02 (2013.01); B32B 27/08 (2013.01); B32B 27/32 (2013.01); B65D 65/40 (2013.01); B32B 2250/03 (2013.01); B32B 2250/242 (2013.01); B32B 2250/40 (2013.01); B32B 2264/104 (2013.01); B32B 2264/303 (2020.08); B32B 2307/306 (2013.01); B32B 2307/558 (2013.01); B32B 2307/72 (2013.01); B32B 2307/732 (2013.01); B32B 2439/70 (2013.01); Y10T 428/1352 (2015.01)] 4 Claims
OG exemplary drawing
 
1. A laminate with a sheet shape for vacuum forming, pressure forming, or match molding, comprising:
an inner layer; and
paired outer layers layered on respective opposite sides of the inner layer, wherein
the inner layer contains an inorganic filler and a thermoplastic resin,
the paired outer layers contain a thermoplastic resin,
the inorganic filler contains calcium carbonate particles,
the inorganic filler has a percentage content of greater than 50.0% by mass in the laminate,
the paired outer layers each have a thickness at a ratio to a total thickness of the laminate of at least 2.0% and no greater than 20.0%,
the laminate has a density of at least 1.20 g/cm3 and no greater than 1.70 g/cm3,
the total thickness of the laminate is at least 300 μm and no greater than 450 μm, and
a maximum particle diameter of the calcium carbonate particles is no greater than 20 μm.