DUST CAP FOR LOUDSPEAKER, LOUDSPEAKER USING IT AND ELECTRONIC EQUIPMENT AND DEVICE USING ITS LOUDSPEAKER

摘要

PROBLEM TO BE SOLVED: To provide a dust cap having a high sound quality, being friendly to the earth, being easily manufactured and being a low cost regarding the dust cap for a loudspeaker used for various acoustic equipment. SOLUTION: The dust cap contains microfibril-forming fibers having a degree of beat-unravelling from 50 m1 to 200 m1 at a Canada standard freeness. In the dust cap for the loudspeaker, an inequality 10d≤X≤40d holds in the relationship of the density (d) of the dust cap and the content X wt.% of the microfibril-forming fibers. COPYRIGHT: (C)2008,JPO&INPIT