Filter medium and method of fabricating the same
AssigneeTaiwan Textile Research Institute
InventorsChung-Feng Dai, Huan-Sheng Chien
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Abstract
Provided is a method of fabricating a filter medium including the following steps. An assembly of first fiber is formed by a first spinning device. A plurality of second fiber is formed by a second spinning device. On a reception device is collected a film having a three-dimensional non-woven structure constructed by the first fibers and the second fibers. Each of the first fibers has a diameter of 1-50 μm. Each of the second fibers has a diameter of 1-1000 nm. The second spinning device is positioned between the first spinning device and the reception device. The first fibers and the second fibers stack with each other in a random manner to form the three-dimensional non-woven structure.
Claims10
A method of fabricating a filter medium, comprising:
- forming a plurality of first fibers by a first spinning device;
- forming a plurality of second fibers by a second spinning device;
- collecting, on a reception device, a film having a three-dimensional non-woven structure constructed by the first fibers and the second fibers, wherein
- each of the first fibers has a diameter of 1-50 μm;
- each of the second fibers has a diameter of 1-1000 nm;
- the second spinning device is located between the first spinning device and the reception device;
- the first fibers and the second fibers stack with each other in a random manner to form the three-dimensional non-woven structure;
- wherein the first spinning device is a melt-blowing apparatus and the second spinning device is an electro-spinning apparatus.
A filter medium, comprising:
- a supporting layer constructed by a plurality of first fibers, wherein each of the first fibers has a diameter of 1-50 μm, and each of the first fibers is a continuous long fiber or a short fiber having a length greater than 3 mm;
- and
- a plurality of second fibers dispersed in the supporting layer, wherein each of the second fibers has a diameter of 1-1000 nm, and the second fibers and the first fibers stack with each other in a random manner to form a three-dimensional composite structure combining a nano-structure and a micro-structure;
- wherein the first fibers are formed by a skill of melt-blowing, and the second fibers are formed by an electro-spinning process.
Dependencies are inferred from the claim text.