| 摘要 |
A method for fixing a valve assembly to a container, the container comprising a neck portion in a first thermoplastic material and the valve assembly comprising a ring of a second thermoplastic material, the method comprising positioning the valve assembly on or in the container's neck portion to form an interface between the thermoplastic ring and the container's neck portion, characterized in that the method further comprises laser welding the thermoplastic ring to the container's neck portion. |
