Paste for forming thick film, method for manufacturing thereof, and filter apparatus
First Claim
1. A method for manufacturing a paste for forming a thick film, comprising filtering a paste through a filter comprising a first nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
- m, wherein said first nonwoven filter comprises a multitude of sintered folded linear metal fibers, wherein said paste comprises a solid material and an organic vehicle, and said paste has a viscosity in the range of about 1 to 50 Pa·
s, and wherein after passing through said first nonwoven filter said paste is filtered through a wire gauze comprising knitted metal wires in the shape of a mesh, whereby undesired lump material are removed from said paste.
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Accused Products
Abstract
A method for manufacturing a paste for forming a thick film is provided, in which undesired lump materials are efficiently removed from the paste for forming the thick film. The paste, which contains a solid material and an organic vehicle and has a viscosity in the range of about 1 to 50 Pa·s, is filtrated with a sintered metal type filter manufactured by integrally sintering a nonwoven fabric filter part, having a thickness of many folded linear metal fibers and having a mesh opening size of about 1 to 20 μm, and a wire gauze part composed of metal wires knitted into the shape of a mesh.
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Citations
24 Claims
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1. A method for manufacturing a paste for forming a thick film, comprising filtering a paste through a filter comprising a first nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
- m, wherein said first nonwoven filter comprises a multitude of sintered folded linear metal fibers, wherein said paste comprises a solid material and an organic vehicle, and said paste has a viscosity in the range of about 1 to 50 Pa·
s, and wherein after passing through said first nonwoven filter said paste is filtered through a wire gauze comprising knitted metal wires in the shape of a mesh, whereby undesired lump material are removed from said paste. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- m, wherein said first nonwoven filter comprises a multitude of sintered folded linear metal fibers, wherein said paste comprises a solid material and an organic vehicle, and said paste has a viscosity in the range of about 1 to 50 Pa·
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9. A method for manufacturing a paste for forming a thick film, comprising filtering a paste through a filter comprising a first nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
- m, wherein said first nonwoven filter comprises a sintered porous aggregate of metal particles, wherein said paste comprises a solid material and an organic vehicle, and said paste has a viscosity in the range of about 1 to 50 Pa·
s, and wherein after passing through said first nonwoven filter said paste is filtered through a wire gauze comprising knitted metal wires in the shape of a mesh, whereby undesired lump material are removed from said paste.
- m, wherein said first nonwoven filter comprises a sintered porous aggregate of metal particles, wherein said paste comprises a solid material and an organic vehicle, and said paste has a viscosity in the range of about 1 to 50 Pa·
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10. A method for manufacturing a paste for forming a thick film, comprising filtering a paste through a filter comprising a first nonwoven fabric filter comprising sintered metal and having a mesh opening size of about 1 to 20 μ
- m, wherein said paste comprises a solid material and an organic vehicle, and wherein said paste has a viscosity in the range of about 1 to 50 Pa·
s, and wherein after passing through said first nonwoven filter said paste is filtered through a wire gauze comprising knitted metal wires in the shape of a mesh, whereby undesired lump material are removed from said paste, wherein there is at least one second nonwoven filter comprising sintered metal arranged vertically above said first nonwoven filter, and wherein said paste is filtered by said second nonwoven filter prior to being filtered by said first nonwoven filter. - View Dependent Claims (11)
- m, wherein said paste comprises a solid material and an organic vehicle, and wherein said paste has a viscosity in the range of about 1 to 50 Pa·
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12. A filter apparatus comprising a filter for filtering a paste which comprises a solid material and an organic vehicle and has a viscosity in the range of about 1 to 50 Pa·
- s, said filter comprising a first sintered nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
m, wherein said filter comprises said first nonwoven filter which comprises sintered metal in combination with a wire gauze comprising knitted metal wires in the shape of a mesh, wherein said first nonwoven filter comprises a sintered multitude of folded linear metal fibers. - View Dependent Claims (13, 14, 15)
- s, said filter comprising a first sintered nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
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16. A filter apparatus comprising a filter for filtering a paste which comprises a solid material and an organic vehicle and has a viscosity in the range of about 1 to 50 Pa·
- s, said filter comprising a first sintered nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
m, wherein said filter comprises said first nonwoven filter which comprises sintered metal in combination with a wire gauze comprising knitted metal wires in the shape of a mesh, wherein said first nonwoven filter comprises a sintered porous aggregate of metal particles. - View Dependent Claims (17, 18, 19)
- s, said filter comprising a first sintered nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
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20. A filter apparatus comprising a filter for filtering a paste which comprises a solid material and an organic vehicle and has a viscosity in the range of about 1 to 50 Pa·
- s, said filter comprising a first sintered nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
m, wherein said filter comprises said first nonwoven filter which comprises sintered metal in combination with a wire gauze comprising knitted metal wires in the shape of a mesh, and at least one second nonwoven filter comprising sintered metal disposed vertically above said first nonwoven filter. - View Dependent Claims (21, 22, 23, 24)
- s, said filter comprising a first sintered nonwoven fabric filter having a mesh opening size of about 1 to 20 μ
Specification