Patent ID: 8561796
Filing Date: 2013-10-22
Classification: A61F

Abstract:
1. A package material for an adhesive bandage which is adapted to be used for packaging an adhesive bandage therein, the adhesive bandage including a surface base having one surface, an adhesive layer provided on the one surface of the surface base and a releasing sheet attached to the adhesive layer so as to cover it, the package material for adhesive bandage comprising: a first sheet having a first sheet base and a first cold seal layer provided on the first sheet base; and a second sheet having a second sheet base and a second cold seal layer provided on the second sheet base, wherein the first cold seal layer faces the surface base of the adhesive bandage and the second cold seal layer faces the releasing sheet of the adhesive bandage when the adhesive bandage is packaged in the package material for adhesive bandage, wherein each of the first sheet base and the second sheet base is a glassine paper, wherein each of the first cold seal layer and the second cold seal layer is formed of a mixture of rubber and acrylic resin, wherein in the first cold seal layer, a mass ratio of the rubber to the acrylic resin is in the range of 0.3:1 to 2.2:1, wherein in the second cold seal layer, a mass ratio of the rubber to the acrylic resin is in the range of 2.3:1 to 4:1 wherein the acrylic resin is a (meth)acrylic (co)polymer obtained by (co)polymerizing a (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer is a (meth)acrylic acid alkyl ester having 1 to 20 carbon atoms in an alkyl group forming an ester portion thereof, wherein an amount of the rubber contained in the first cold seal layer is smaller than an amount of the rubber contained in the second cold seal layer and wherein in the case where the amount of the rubber contained in the first cold seal layer is defined as A (mass %) and the amount of the rubber contained in the second cold seal layer is defined as B (mass %), A and B satisfy a relation of 1.05≦B/A≦2.40.