EP0316195A2
Expired / Lapsed
EP
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Polyallylene Sulfide nonwoven fabric
Assignee: Asahi Kasei Corp
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Filing: 1988-11-11
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Granted: —
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Expires: 2008-11-11
Abstract
Abstract A nonwoven fabric having a weight per unit area of 5 g/m² to 500 g/m² composed of a polyallylene sulfide fiber having a mean fiber diameter of 0.1 µm to 8.0 µm is provided. The nonwoven fabric of extra fine polyallylene sulfide fibers has superior heat resistance, wet heat resistance, resistance to chemicals and fire retardant properties, suitable for various filter applications.
Inventors
- 👤 Masataka Ikeda
- 👤 Tsukasa Shima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 03:48
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/005; D04H3/009; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; D01; D01F; D01F6/00; D01F6/58; D01F6/76; D01F6/765; D04H1/00; D04H1/40; D04H1/42; D04H1/4326; D04H1/54; D04H1/56; D04H1/70; D04H1/72; D04H1/724; D04H3/08; D04H3/16; D21; D21H; D21H13/00; D21H13/10; D21H13/12; D21H13/16; D21H27/00; D21H27/08; B01D2239/00; B01D2239/04; B01D2239/0457; B01D2239/0471; B01D2239/06; B01D2239/0604; B01D2239/0622; B01D2239/12; B01D2239/1233; B01D2239/1291; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31533; Y10T442/00; Y10T442/60; Y10T442/68
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
31 words
A nonwoven fabric having a weight per unit area of 5 g/m² to 500 g/m² composed of polyallylene sulfide fiber having a mean fiber diameter of 0.1 µm to 8.0 µm.
Claim 2
Dependent Claim
31 words
A nonwoven fabric having a weight per unit area of 5 g/m² to 500 g/m² composed of polyallylene sulfide fiber having a mean fiber diameter of 0.1 µm to 8.0 µm.
Claim 3
Dependent Claim
30 words
A nonwoven fabric according to claim 1, wherein the melt flow rate of said polyallylene sulfide fiber is from 50 g per 10 minutes to 1,200 g per 10 minutes.
Claim 4
Dependent Claim
30 words
A nonwoven fabric according to claim 2, wherein the melt flow rate of said polyallylene sulfide fiber is from 80 g per 10 minutes to 800 g per 10 minutes.
Claim 5
Dependent Claim
30 words
A nonwoven fabric according to claim 3, wherein the melt flow rate of said polyallylene sulfide fiber is from 100 g per 10 minutes to 600 g per 10 minutes.
Claim 6
Dependent Claim
16 words
A nonwoven fabric according to claim 1, wherein said polyallylene sulfide is a linear polyphenylene sulfide.
Claim 7
Dependent Claim
13 words
A nonwoven fabric according to claim 1 produced by a melt blow method.
Claim 8
Dependent Claim
13 words
A nonwoven fabric according to claim 1 produced by a paper making method.
References Cited (Backward Citations)
No citation records indexed.
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