To obtain the subject material used in drink-supply systems, etc., for automatic vending machines of cup-type drinks, which are require to suppress germination of bacteria, adhesion of stains, etc., and be maintained in non polluted states by bringing the resin composition to contain a specific resin base material, a powdery water repellent and an antimicrobial agent.

This non-stained resin composition comprises a resin base material having gas barrier properties and impermeability, e.g. preferably a polyvinilinene fluoride, a polyvinilidene chloride, a polychlorotrifluoroethylene, etc., a powdery water repellent having water repelency and dispersed in the said resin base material, e.g. preferably a fluorinated graphite, a tetrafluoroethylene oligomer, a polytetrafluoroethylene-hexafluoropropylene copolymer, a tetrafluoroethylene-perfluoroalkyl ether copolymer, etc., and an antimicrobial agent such as zeolite preferably supporting metal silver.