US 11,738,546 B2
Laminate, blister container, and push-through package
Hajime Okamoto, Tokyo (JP); Kousuke Kashima, Tokyo (JP); Ai Ito, Tokyo (JP); and Toyoaki Suzuki, Tokyo (JP)
Assigned to FUJIMORI KOGYO CO., LTD., Tokyo (JP)
Appl. No. 16/493,759
Filed by FUJIMORI KOGYO CO., LTD., Tokyo (JP)
PCT Filed Mar. 12, 2018, PCT No. PCT/IB2018/000230
§ 371(c)(1), (2) Date Sep. 13, 2019,
PCT Pub. No. WO2018/167556, PCT Pub. Date Sep. 20, 2018.
Claims priority of application No. 2017-053665 (JP), filed on Mar. 17, 2017.
Prior Publication US 2020/0031105 A1, Jan. 30, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 27/30 (2006.01); B32B 27/32 (2006.01); B65D 65/40 (2006.01); B65D 75/32 (2006.01); B32B 27/36 (2006.01); B32B 27/08 (2006.01)
CPC B32B 27/30 (2013.01) [B32B 27/32 (2013.01); B32B 2309/105 (2013.01); B32B 2327/12 (2013.01); B65D 65/40 (2013.01); B65D 75/32 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A laminate comprising a substrate layer, an intermediate layer, and a fluorine-based resin layer in this order, and having a total film thickness of 400 μm or less,
wherein
a thickness of said substrate layer is 50 μm or more and 200 μm or less,
a thickness of said intermediate layer is 5 μm or more and 50 μm or less,
a thickness of said fluorine-based resin layer is 20 μm or more and 150 μm or less,
a water vapor permeability of said laminate is 0.5 g/m2/24 hours or less,
an upper yield point stress of said laminate is 1,500 N/cm2 or more,
said substrate layer comprises a polyester-based resin selected from the group consisting of polyethylene terephthalate, polyethylene isophthalate, and polybutylene terephthalate,
said intermediate layer consists of (i) a linear low-density polyethylene and a maleic anhydride-modified polyethylene, or (ii) a maleic anhydride-modified polypropylene, an epoxydized polybutadiene having a number average molecular weight of 500 or more and 4,000 or less, and a copolymer of aromatic olefin-aliphatic olefin,
the linear low-density polyethylene is contained in an amount of 10 percent by mass or more and 70 percent by mass or less based on 100 percent by mass of total mass of the linear low-density polyethylene and the maleic anhydride-modified polyethylene,
the copolymer of aromatic olefin-aliphatic olefin is contained in an amount of 1 part by mass or more and 50 parts by mass or less based on 50 parts by mass or more and 99 parts by mass or less of the maleic anhydride-modified polypropylene, and the epoxydized polybutadiene is contained in an amount of 15 parts by mass or more and 35 parts by mass or less based on 65 parts by mass or more and 85 parts by mass or less of the copolymer of aromatic olefin-aliphatic olefin, and
said intermediate layer functions as an adhesive agent layer that bonds said fluorine-based resin layer and said substrate layer, and said substrate layer and said fluorine-based resin layer are laminated with said intermediate layer interposed therebetween.