Patent ID: 8668971

Claim:
A package with multiple chambers for medical use comprising: sealed peripheral edge parts as strong seal parts formed by sealing one sheet having a heat seal layer in at least one surface thereof and another sheet having a heat seal layer in at least one surface thereof wherein said heat seal layers face each other, and wherein the multiple chambers are partitioned by one or more weak seal parts that form one or more walls and that is made by heat-pressing from the outside of said package and bonding partly the inner surfaces of heat seal layers facing each other to form the walls of said package, wherein both of said two heat seal layers forming the inner surface of said walls include only cyclic polyolefin resins as a resin ingredient to prevent the package inner wall from absorbing or holding an ingredient contained therein, to prevent the elution of low molecular weight components through the package inner wall and to maintain moisture impermeability, and wherein at least one of said two heat seal layers forming the inner surfaces of said walls include, as a resin ingredient, a mixture of cyclic polyolefin resins alone which comprises (A) a cyclic polyolefin having a glass transition temperature of lower than 100° C. and (B) a cyclic polyolefin having a glass transition temperature of not lower than 100° C. to form the strong seal part and the weak seal part so as to function as a package with multiple chambers.