| 摘要 |
The present invention relates to a canister for a gas mask that includes a rubber stopper, a front side body, a filter paper, an upper spacer, activated charcoal, a lower spacer, a rear side body, and a screw stopper. The activated charcoal is contained between the upper spacer and the lower spacer. The upper spacer and the lower spacer independently comprise: spacer bodies having a plurality of fused needles which are installed at intervals along an edge of the spacer bodies and are integrated with the spacer bodies; and nonwoven fabric fused onto the spacer bodies. Multiple end portions of the fused needles, which penetrate the nonwoven fabric, are fused by an ultrasonic welding device to fixate the nonwoven fabric to the spacer bodies. |
