JPS6433143A - Porous composite sheet - Google Patents
Porous composite sheetInfo
- Publication number
- JPS6433143A JPS6433143A JP9780988A JP9780988A JPS6433143A JP S6433143 A JPS6433143 A JP S6433143A JP 9780988 A JP9780988 A JP 9780988A JP 9780988 A JP9780988 A JP 9780988A JP S6433143 A JPS6433143 A JP S6433143A
- Authority
- JP
- Japan
- Prior art keywords
- composite sheet
- porous composite
- solution
- polyurethane
- coagulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title abstract 5
- 229920002635 polyurethane Polymers 0.000 abstract 3
- 239000004814 polyurethane Substances 0.000 abstract 3
- 230000001112 coagulating effect Effects 0.000 abstract 2
- 239000000835 fiber Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000004745 nonwoven fabric Substances 0.000 abstract 2
- 230000035699 permeability Effects 0.000 abstract 2
- 229920000728 polyester Polymers 0.000 abstract 2
- 230000001464 adherent effect Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE:To obtain a porous composite sheet excellent in hardness, air permeability and durability, by heat-treating a porous composite sheet obtained by impregnating a nonwoven fabric of a polyester fiber with a polyurethane solution and coagulating the solution by a wet process. CONSTITUTION:A porous composite sheet is obtained by impregnating a nonwoven fabric of a polyester fiber (thickness of 2-10mm and a weight of 300-1500g/m<2>) with a polyurethane solution of a concentration of 5-30wt.% so that the amount of the adherent solid may be 40-260wt.%, coagulating the solution by a wet process and drying the fabric. After the surface layers are cut off from this sheet, it is heat-treated at a temperature >= the softening temperature of this polyurethane in a stream of hot air to obtain a porous composite sheet of a hardness >=80, which is at least 1.02 times that before the treatment and an air permeability >=25cc/cm<2>/sec, which is at least 1.5 times that before the treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9780988A JPS6433143A (en) | 1988-04-20 | 1988-04-20 | Porous composite sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9780988A JPS6433143A (en) | 1988-04-20 | 1988-04-20 | Porous composite sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6433143A true JPS6433143A (en) | 1989-02-03 |
Family
ID=14202096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9780988A Pending JPS6433143A (en) | 1988-04-20 | 1988-04-20 | Porous composite sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6433143A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511477A (en) * | 1978-07-13 | 1980-01-26 | Kawasaki Heavy Ind Ltd | Universal hopper shoot device |
-
1988
- 1988-04-20 JP JP9780988A patent/JPS6433143A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511477A (en) * | 1978-07-13 | 1980-01-26 | Kawasaki Heavy Ind Ltd | Universal hopper shoot device |
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