公开(公告)号：US20220204816A1

公开(公告)日：2022-06-30

申请号：US17603462

申请日：2020-04-16

Applicant: NITTO DENKO CORPORATION

Inventor： Tamao FUKUSHIMA ,  Yosuke SUGAYA ,  Hisae KITAGAWA

IPC: C09J7/38 ,  C09J7/25 ,  C09J11/08 ,  C09J11/06

Abstract: Provided is a waterproof cover having a waterproof membrane, and a PSA sheet laminated peripherally to the waterproof membrane. The PSA sheet comprises a PSA layer bonded to the waterproof membrane. The PSA layer is formed of a PSA having a storage modulus G′ of 53000 Pa or higher at 40° C.

公开(公告)号：US20210251095A1

公开(公告)日：2021-08-12

申请号：US16973190

申请日：2020-04-24

Applicant: NITTO DENKO CORPORATION

Inventor： Tamao FUKUSHIMA ,  Takeo INOUE ,  Yu KAMAMOTO ,  Hisae KITAGAWA

IPC: H05K5/06 ,  H04R1/44

Abstract: A waterproof membrane of the present disclosure has an insertion loss of 5.0 dB or less for sound with a frequency of 1 kHz, and an insertion loss of 5.0 dB or less for sound with a frequency of 10 kHz when a permeation region for sound of the waterproof membrane has an area of 1.3 mm2. The waterproof membrane of the present disclosure can cope with further size reduction of the permeation region. A waterproof member of the present disclosure includes the above-mentioned waterproof membrane of the present invention and a support member joined to the waterproof membrane.

公开(公告)号：US20220312091A1

公开(公告)日：2022-09-29

申请号：US17605119

申请日：2020-04-24

Applicant: NITTO DENKO CORPORATION

Inventor： Yu KAMAMOTO ,  Takeo INOUE ,  Tamao FUKUSHIMA ,  Hisae KITAGAWA

IPC: H04R1/02 ,  H04R1/28

Abstract: The conversion element member of the present disclosure includes: a conversion element having an opening capable of functioning as a ventilation port and/or a sound-transmitting port; and a waterproof membrane. The conversion element has an outer surface provided with the opening. The waterproof membrane is joined, at a joining portion thereof, to the outer surface of the element so as to cover the opening, the joining portion having a shape surrounding the opening when viewed in a direction perpendicular to the outer surface. The waterproof membrane has a non-joining portion defined as a portion surrounded by the joining portion when viewed in the direction, the non-joining portion having a region overlapping the outer surface when viewed in the direction. A spacing distance D1 between the membrane and the outer surface in the region is 0.01 mm to X mm, where X represents, in an indentation test on the waterproof membrane.

公开(公告)号：US20210092499A1

公开(公告)日：2021-03-25

申请号：US17040146

申请日：2019-12-25

Applicant: NITTO DENKO CORPORATION

Inventor： Tamao FUKUSHIMA ,  Bunta HIRAI ,  Yosuke SUGAYA ,  Yuichi ABE

IPC: H04R1/02 ,  G06F1/16 ,  H05K5/00 ,  G10K11/18

Abstract: The waterproof member of the present disclosure includes a waterproof membrane configured to prevent entry of water while permitting sound and/or gas to pass therethrough, and a support layer having air permeability in a thickness direction thereof. The waterproof member has a joining region where the waterproof membrane and the support layer are joined, and a non-joining region where the waterproof membrane and the support layer are spaced apart from each other. The non-joining region is surrounded by the joining region when viewed in a direction perpendicular to a main surface of the waterproof membrane. A thickness of the support layer in the non-joining region is 500 μm or less. A spacing distance between the waterproof membrane and the support layer in the non-joining region is 150 μm or less. An air resistance in an in-plane direction of the support layer is greater than 80,000 seconds/100 mL.

公开(公告)号：US20200148918A1

公开(公告)日：2020-05-14

申请号：US16604403

申请日：2018-04-17

Applicant: NITTO DENKO CORPORATION

Inventor： Takeo INOUE ,  Tamao FUKUSHIMA

IPC: C09J7/29 ,  B32B7/08 ,  B32B7/12 ,  B32B27/32 ,  B32B27/36

Abstract: A laminate of the present disclosure is a laminate including: a resin film that can function as a waterproof air-permeable membrane and/or a waterproof sound-transmitting membrane; and a separator. The resin film and the separator are joined to each other by an adhesive layer. A peel surface formed when the separator is peeled from the resin film is positioned between the resin film and the adhesive layer. The laminate of the present disclosure can supply the resin film that can function as a waterproof air-permeable membrane and/or a waterproof sound-transmitting membrane in a state of being highly flexible in terms of shape and method of joining to an opening of a housing. The laminate of the present disclosure can be supplied also in the form of a roll with excellent storage property, transportability, etc.

公开(公告)号：US20210067851A1

公开(公告)日：2021-03-04

申请号：US16957543

申请日：2018-12-28

Applicant: NITTO DENKO CORPORATION

Inventor： Tamao FUKUSHIMA ,  Yosuke SUGAYA ,  Bunta HIRAI ,  Yuichi ABE

IPC: H04R1/02 ,  B01D69/10 ,  B01D69/02 ,  B01D71/36 ,  B01D53/26 ,  B32B5/02 ,  B32B27/32 ,  B32B7/12 ,  B32B27/12

Abstract: The waterproof member of the present disclosure is a waterproof member comprising a waterproof membrane configured to prevent entry of water while permitting sound and/or gas to pass therethrough, and a support layer having air permeability in a thickness direction thereof, wherein the member has a joining region where the waterproof membrane and the support layer are joined, and a non-joining region where the waterproof membrane and the support layer are spaced apart from each other, the non-joining region is surrounded by the joining region when viewed in a direction perpendicular to a main surface of the waterproof membrane, and a thickness of the support layer in the non-joining region is less than 100 μm. The waterproof member of the present disclosure is, for example, a waterproof sound-transmitting member including a waterproof sound-transmitting membrane and a support layer for the membrane and having improved sound transmission characteristics.

公开(公告)号：US20200048500A1

公开(公告)日：2020-02-13

申请号：US16604395

申请日：2018-04-17

Applicant: NITTO DENKO CORPORATION

Inventor： Takeo INOUE ,  Tamao FUKUSHIMA

IPC: C09J7/24 ,  C09J7/38 ,  C09J7/40

Abstract: A laminate of the present disclosure is a laminate including a resin film and a separator. The resin film has a tensile strength of 30 N/10 mm or less. The resin film and the separator are joined to each other by an adhesive layer. A peel surface formed when the separator is peeled from the resin film is positioned between the resin film and the adhesive layer. The laminate of the present disclosure is suitable for supplying a low-strength resin film in a state without an adhesive layer. The laminate of the present disclosure is also a film supply member that is convenient in terms of handling, storage, etc.

公开(公告)号：US20170325011A1

公开(公告)日：2017-11-09

申请号：US15655087

申请日：2017-07-20

Applicant: NITTO DENKO CORPORATION

Inventor： Nobuharu KUKI ,  Tamao FUKUSHIMA

IPC: H04R1/02 ,  H04R1/44

CPC classification number: H04R1/023 ,  B32B27/30 ,  H04R1/44 ,  H04R2499/11

Abstract: The waterproof sound-permeable membrane of the present disclosure is a waterproof sound-permeable membrane adapted to permit passage of sound and prevent ingress of water. The air permeability of the waterproof sound-permeable membrane, as expressed by Gurley number, is 20 seconds/100 mL or more. The water entry pressure of the waterproof sound-permeable membrane is 500 kPa or more. When a tensile strength at break of the waterproof sound-permeable membrane in a MD direction is denoted by T1 and a tensile strength at break of the waterproof sound-permeable membrane in a TD direction orthogonal to the MD direction is denoted by T2, a strength ratio (T1/T2) is in a range of 0.5 to 2.0.