Invention Grant
- Patent Title: Waterproof sound-permitting sheet, method of manufacturing same, and electronic device provided with waterproof sound-permitting sheet
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Application No.: US14540308Application Date: 2014-11-13
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Publication No.: US10132004B2Publication Date: 2018-11-20
- Inventor: Seung Hoon Lee , Jun Sik Hwang , Yong Sik Jung
- Applicant: AMOGREENTECH CO., LTD.
- Applicant Address: KR Gimpo-si
- Assignee: AMOGREENTECH CO., LTD.
- Current Assignee: AMOGREENTECH CO., LTD.
- Current Assignee Address: KR Gimpo-si
- Agency: Cantor Colburn LLP
- Priority: KR10-2012-0053143 20120518; KR10-2013-0051383 20130507
- Main IPC: H04R1/44
- IPC: H04R1/44 ; D01D5/00 ; H04R1/02 ; D01F1/04

Abstract:
Provided is a waterproof sound-permitting sheet, including: a porous substrate having a plurality of pores; and a porous nanoweb, which is stacked on the porous substrate, has a plurality of pores, and is formed by electrospinning a polymer material to which a black or a different color pigment is added, thereby improving waterproofing performance and sound penetration performance by forming on a porous substrate, such as non-woven fabric, the porous web having the black or the different color by using the electrospinning method, and can shorten a production process by eliminating a pigment coating step by means of adding the pigment to the polymer material when manufacturing the porous nanoweb according to the electrospinning method.
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