Electret Fiber Sheet, Laminate Sheet, And Filter

Abstract: The purpose of the present invention is to provide an electret fiber sheet that has high collection performance and that is suitably used in an air filter, etc. The present invention is an electret fiber sheet configured from polyolefin-based resin fibers comprising a polyolefin-based resin composition containing a high-crystalline polyolefin resin and a low-crystalline polyolefin resin, wherein the mass ratio of the low-crystalline polyolefin resin in the polyolefin-based resin composition is 0.5-10 mass% (inclusive) relative to the total mass of the high-crystalline polyolefin-based resin and the low-crystalline polyolefin resin, and a hindered-amine-based compound is included in the electret fiber sheet in an amount of 0.1-5.0 mass% (inclusive).

Patent Information

Application #

Filing Date

20 January 2023

Publication Number

04/2023

Publication Type

INA

Invention Field

POLYMER TECHNOLOGY

Status

Email

patent@depenning.com

Parent Application

Applicants

TORAY INDUSTRIES, INC.

1-1, Nihonbashi-Muromachi 2-chome, Chuo-ku, Tokyo 1038666

Inventors

1. KAMESHIMA, Rika

c/o Shiga Plant, Toray Industries, Inc., 1-1, Sonoyama 1-chome, Otsu-shi, Shiga 5208558

2. INABA, Sachio

c/o Shiga Plant, Toray Industries, Inc., 1-1, Sonoyama 1-chome, Otsu-shi, Shiga 5208558

3. HAYASHI, Shingo

c/o Shiga Plant, Toray Industries, Inc., 1-1, Sonoyama 1-chome, Otsu-shi, Shiga 5208558

Specification

Documents

Application Documents

#	Name	Date
1	202347003977-FORM 3 [23-11-2023(online)].pdf	2023-11-23
1	202347003977.pdf	2023-01-20
2	202347003977-STATEMENT OF UNDERTAKING (FORM 3) [20-01-2023(online)].pdf	2023-01-20
2	202347003977-FORM 3 [23-06-2023(online)].pdf	2023-06-23
3	202347003977-PROOF OF RIGHT [20-01-2023(online)].pdf	2023-01-20
3	202347003977-Correspondence_Form 1 And Form 26_21-02-2023.pdf	2023-02-21
4	202347003977-PRIORITY DOCUMENTS [20-01-2023(online)].pdf	2023-01-20
4	202347003977-FORM-26 [06-02-2023(online)].pdf	2023-02-06
5	202347003977-COMPLETE SPECIFICATION [20-01-2023(online)].pdf	2023-01-20
5	202347003977-FORM 1 [20-01-2023(online)].pdf	2023-01-20
6	202347003977-DECLARATION OF INVENTORSHIP (FORM 5) [20-01-2023(online)].pdf	2023-01-20
6	202347003977-DRAWINGS [20-01-2023(online)].pdf	2023-01-20
7	202347003977-DECLARATION OF INVENTORSHIP (FORM 5) [20-01-2023(online)].pdf	2023-01-20
7	202347003977-DRAWINGS [20-01-2023(online)].pdf	2023-01-20
8	202347003977-COMPLETE SPECIFICATION [20-01-2023(online)].pdf	2023-01-20
8	202347003977-FORM 1 [20-01-2023(online)].pdf	2023-01-20
9	202347003977-FORM-26 [06-02-2023(online)].pdf	2023-02-06
9	202347003977-PRIORITY DOCUMENTS [20-01-2023(online)].pdf	2023-01-20
10	202347003977-PROOF OF RIGHT [20-01-2023(online)].pdf	2023-01-20
10	202347003977-Correspondence_Form 1 And Form 26_21-02-2023.pdf	2023-02-21
11	202347003977-STATEMENT OF UNDERTAKING (FORM 3) [20-01-2023(online)].pdf	2023-01-20
11	202347003977-FORM 3 [23-06-2023(online)].pdf	2023-06-23
12	202347003977.pdf	2023-01-20
12	202347003977-FORM 3 [23-11-2023(online)].pdf	2023-11-23