| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a blood sampling tube made of plastic having multilayered barriers effective for permeability to gases and water. SOLUTION: This blood sampling tube assembly 20 has a plastic test tube 10a having a side wall 11a arriving at a closed end 18a from an opening end 16a. Barrier films spread to the substantial parts on the outside surface of the test tube exclusive of the opening end 16a. These barrier films have a first layer 25 consisting of a polymer material, such as acrylate material, a second layer 26 consisting of a mixture composed of an IVA group metal oxide material and silicon oxide and a third layer 27 consisting of an org. finish coating layer, such as PVDC.</p> |
