PLASTIC TUBE VESSEL HAVING NON-RETURN VALVE

摘要

PROBLEM TO BE SOLVED: To provide a plastic tube vessel having a non-return valve which is free from any detachment of the non-return valve when a content is squeezed out, and has excellent gas barrier property and moisture-proof property. SOLUTION: This plastic tube vessel having the non-return valve comprises a plastic tube and a small diameter part of the diameter smaller than the maximum outside diameter of the non-return valve provided on a tip side of a nozzle part while the non-return valve is disposed on an inner wall of the nozzle part of the plastic tube.