| abstract |
[Problem] To provide a laminated layered body having a laminated configuration that is configured from a substantially singular resin having a low environmental load and having polyester as the main component while containing an environmentally friendly recycled material, the laminated layered body also having necessary properties required from a packaging material such as gas barrier performance, heat-sealing performance, toughness, and transparency. [Solution] A laminated layered body obtained by laminating, in the stated order, a polyester substrate film containing at least 50 wt% of a polyester resin recycled from PET bottles, and a heat-sealable resin layer, wherein the laminated layered body is characterized in that: the substrate film is a layered film having, on one surface, an inorganic thin-film layer (A) and a protective layer (a) containing a urethane resin; the heat-sealable resin layer is formed from a polyester-based resin having ethylene terephthalate as the main constituent component; and the puncture strength is 10 N or higher and the haze is 20% or lower. |