公开(公告)号：US20140060330A1

公开(公告)日：2014-03-06

申请号：US13839283

申请日：2013-03-15

Applicant: DONALDSON COMPANY, INC.

Inventor： Alexandra MB Boyat ,  Michael J. Hebert ,  Thomas M. Weik ,  Robert O. Nelson ,  Lloyd G. Keleny ,  Jacob Sanders

IPC: H05K5/02

CPC classification number: H05K5/0213 ,  G06F1/1656 ,  H04M1/03 ,  H04M1/18 ,  H04R1/023 ,  H04R2499/11

Abstract: Taught herein is a venting media laminate having a microporous membrane layer, a fine fiber layer directly coupled to the microporous membrane layer, and a colorant disposed in the fine fiber layer. Also described is an acoustic venting assembly with a microporous membrane layer and a fine fiber layer having an average insertion loss no more than 100% more than the average insertion loss of the microporous membrane layer alone in the frequency range from 300 to 4000 Hz. Methods of manufacturing venting media is also described, where a colorant is added to the polymer solution which is spun to form a fine fiber layer. The fine fiber layer is laminated to an expanded PTFE membrane.

Abstract translation: 这里介绍的是具有微孔膜层，直接耦合到微孔膜层的细纤维层和布置在细纤维层中的着色剂的排气介质层压体。 还描述了一种具有微孔膜层和细纤维层的声音排气组件，其平均插入损耗不大于在300至4000Hz的频率范围内单独的微孔膜层的平均插入损耗的100％以上。 还描述了制造排气介质的方法，其中将着色剂加入到纺丝以形成细纤维层的聚合物溶液中。 将细纤维层层压到膨胀PTFE膜上。