| 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 25 spread to the substantial parts on the outside surface of the test tube exclusive of the opening end 16a. These barrier films 25 have a first layer 26 consisting of a polymer material, such as acrylate material, a second layer 27 consisting of an IVA group metal oxide material, a third layer 28 consisting of an inorg. material, such as compsn. consisting essentially of silicon oxide, and a fourth layer 29 consisting of an org. finish coating layer, such as PVDC.</p> |
