| 摘要 |
The present invention relates to a filter unit. The object of the present invention is to easily bond a housing with a cap to prevent unnecessary waste of materials, which is caused when said housing and the cap are bonded with each other. Further, another object of the present invention is to effectively process molten materials (bonding residues), which are produced when a portion of the housing manufactured through an extrusion molding method is melted due to a rotational frictional heat by a fast rotation of said cap while the housing and the cap are bonded in a rotational bonding manner. |
