| 摘要 |
PROBLEM TO BE SOLVED: To remarkably reduce use materials and make them recyclable and minimize bacteria or particles sticking thereto by packaging a barrel for ampoules or a syringes with a biaxially stretched shrinkable film having a specified thickness. SOLUTION: A barrel for ampoules 1 or syringes is packaged with a biaxially stretched shrinkable film 2 made from polyethylene or polypropylene having at least 40 μ in thickness, preferably 50-60 μm. Further, it is processed by annealing for relaxing stresses at a temperature higher than 500 deg.C, preferably at least 580 deg.C and the barrel is shrink-packaged in a clean room condition. In this way, particles are minimized and an operation time of a filter system can be extended in a factory of packaged products, especially a clean factory for ampoules. |
