Multilayer film, laminated film, and packaging
AssigneeDIC Corporation
InventorsTakashi Moriya, Tomohisa Kida
Life of this patent
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Abstract
The multilayer film of the present disclosure has at least a heat-sealing layer and a support layer formed on one side of the heat-sealing layer, wherein the first resin composition forming the heat-sealing layer comprises (a) high-density polyethylene, (b) a propylene random copolymer, and (c) a 1-butene polymer, wherein the content of the component (a) is 30 to 60% by mass, the content of the component (b) is 8 to 42% by mass, and the content of the component (c) is 16 to 56% by mass, wherein the component (a) has a melt flow rate of 10 to 30 g/10 minutes at 190° C., the component (b) has a melt flow rate of 8 to 20 g/10 minutes at 230° C., and the component (c) has a melt flow rate of 0.3 to 3 g/10 minutes at 190° C.
Claims10
A multilayer film having at least a heat-sealing layer and a support layer formed on one side of the heat-sealing layer,
- wherein the first resin composition forming the heat-sealing layer comprises (a) high-density polyethylene, (b) a propylene random copolymer, and (c) a 1-butene polymer,
- wherein when the total content of the high-density polyethylene (a), the propylene random copolymer (b), and the 1-butene polymer (c) is 100% by mass,
- the content of the high-density polyethylene (a) is 30 to 60% by mass,
- the content of the propylene random copolymer (b) is 8 to 42% by mass, and
- the content of the 1-butene polymer (c) is 16 to 56% by mass,
- wherein the high-density polyethylene (a) has a melt flow rate of 10 to 30 g/10 minutes at 190° C.,
- the propylene random copolymer (b) has a melt flow rate of 8 to 20 g/10 minutes at 230° C., and
- the 1-butene polymer (c) has a melt flow rate of 0.3 to 3 g/10 minutes at 190° C.
Dependencies are inferred from the claim text.