Laminate and standing pouch
A laminate includes a substrate layer and a heat-sealing layer. A fold of the laminate produced by a weight of a 2 kg roller has a folding angle of 20 to 55°, and a content of polyethylene in the laminate is 90% by mass or more. The folding angle may be 25 to 55°. The substrate layer may contain high-density polyethylene. The substrate layer may be a uniaxially oriented linear low-density polyethylene film or an unstretched film made of polyethylene.
1 . A laminate, comprising:
a substrate layer consisting of high-density polyethylene;
a heat-sealing layer consisting of linear low-density polyethylene and 5-20% of cyclic polyolefin, and
an anchor coat layer between the substrate layer and the heat-sealing layer, the anchor layer being in direct contact with each of the substrate layer and the heat-sealing layer
wherein
a fold of the laminate produced by a weight of a 2 kg roller has a folding angle of 20 to 55°,
a content of polyethylene in the laminate is 90% by mass or more,
a thickness of the substrate layer is from 20 or 50 μm;
a thickness of the heat-sealing layer is from 25 to 30 μm; and
a thickness of the anchor coat layer is from 0.05 to 2 μm.
2 . The laminate of claim 1 , wherein the folding angle is 25 to 55°.
3 . The laminate of claim 1 , wherein the anchor coat layer comprises acrylic urethane resin or polyester polyurethane resin.
4 . The laminate of claim 1 , wherein the substrate layer is an unstretched film.
5 . The laminate of claim 4 , wherein the anchor coat layer comprises acrylic urethane resin or polyester polyurethane resin.
6 . The laminate of claim 5 , wherein the laminate consists of the substrate, the anchor coat layer and the heat-sealing layer.
7 . A standing pouch including the laminate of claim 1 .
8 . A laminate, consisting of
a substrate layer consisting of high-density polyethylene; and
a heat-sealing layer consisting of linear low-density polyethylene,
wherein
the substrate layer is an unstretched film;
a fold of the laminate produced by a weight of a 2 kg roller has a folding angle of 20 to 55°, and
a content of polyethylene in the laminate is 90% by mass or more.
9 . The laminate of claim 8 , wherein the folding angle is 25 to 55°.
10 . A standing pouch including the laminate of claim 8 .