| 摘要 |
PROBLEM TO BE SOLVED: To provide a baffled earplug (10) with a body front portion (22) for insertion into a person's ear canal. SOLUTION: An earplug has a pocket (30) to increase comfort and is constructed to enhance noise attenuation. The pocket, which allows easier compression of the body front portion for increased comfort, has a plurality of baffles (50) that attenuate sound better than a pocket without baffles. The pocket with baffles is formed by a core pin (80) that lies in an injection mold (82), and the core pin has a plurality of slots (81) that form the baffles. The pocket includes a rear portion (36) that forms a wide passage, and the earplug includes a blocker portion (90) that partially or completely closes off the rear pocket passage. COPYRIGHT: (C)2007,JPO&INPIT |
