| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-cost water cleaner having excellent assemblability and workability while ensuring sufficient pressure resistance and durability of a housing of a water cleaning cartridge. SOLUTION: The water cleaning cartridge having high strength is easily obtained without causing a sink during molding by layering at least a part of the housing of the water cleaning cartridge having a water treating material at the inside with one kind or a plurality of kinds of materials in multilayer by die injection mold. The inside of the water treating material is confirmed visually while keeping strength when the housing is constituted of two layers of an outer layer and an inner layer and at least a part of either one layer has a hollowed part and the housing is constituted so that the other layer formed of a transparent material is inserted into the hollowed part. |
