摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electret filter for a cabin that is capable of cleaning air supplied to a cabin, as well as reducing an odor, and bringing a cabin to a comfortable atmosphere. <P>SOLUTION: There is provided an electret filter for a cabin which comprises a nonwoven fabric containing a polyolefin resin (preferably, an isotactic polypropylene) having a melt flow rate of 1000 to 3000 g/10 minutes and heat generation of 2.0 to 10.0 J/g in a temperature range of 80 to 120°C when a temperature is raised at a speed of 10°C/minute in a differential thermal analysis. Also, there is provided a method for producing the electret filter for the cabin which includes a step for producing the nonwoven fabric in which the aforementioned nonwoven fabric is produced by a melt-blow method and a step for charging in which the nonwoven fabric is charged by a corona discharge. <P>COPYRIGHT: (C)2012,JPO&INPIT |