| 摘要 |
<p>A perforated member that by the use of a metal or another single material, such as any of ceramics, reduces the number of processing steps; provides no location of impurity presence; has no need to separately dispose a reinforcing member; because of no need of welding, reduces the possibility of strain, cracking, etc. attributed to processing; thus realizes high-precision high-quality working; and is most suitable to a filter element or injection nozzle of sanitary and excellent cleanability structure, especially for food purposes. There is provided a perforated member characterized by being obtained by forming indented groove (1) of desired length at an arbitrary site of work (W) of desirable configuration, such as flat plate or tubular body, constituted of a single material; furnishing the indented groove (1) with two or more passage holes (2); and while utilizing the region other than the indented groove (1) as strength retention part (3) of the work (W), realizing an integral structure.</p> |
