Plastic sheet for packaging container
AssigneeJ-Chemical, Inc.
InventorKeijiro Ishiyama
Life of this patent
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Abstract
A plastic sheet for a packaging container with which the activity of a microorganism which stays on a stored matter such as raw fish before packaging or adheres thereto after packaging is lowered, and the growth of the microorganism is suppressed in the case of storing or transporting in a state of raw fish is provided. The plastic sheet for a packaging container comprises a three-layer structure plastic sheet obtained by laminating a polyethylene film containing an antioxidant and an antimicrobial agent as an inner layer, a high gas barrier polyvinyl alcohol film as an intermediate layer, and a polypropylene film as an outer layer.
Claims15
1-5. (canceled)
A plastic sheet for a packaging container comprising a three-layer structure plastic sheet layered using a polyethylene film as an inner layer containing an antioxidant and an antibacterial, a polyvinyl alcohol film as an intermediate layer having high gas barrier properties and a polypropylene film as an outer layer, wherein the polyethylene film contains 1 to 20 parts by weight of the sum of the antioxidant and the antibacterial per 100 parts by weight of the polyethylene film, wherein proliferation of microorganisms is more effectively suppressed by a synergistic effect between the antioxidant and the antibacterial in comparison with the case in which the antioxidant and the antibacterial are included alone in an amount equal to the total weight of the antioxidant and the antibacterial, and wherein said antioxidant is catechin and said antibacterial is a silver-ion antibacterial.
Dependencies are inferred from the claim text.