Manufacturing method of paper making part for loudspeaker, paper making part for loudspeaker, diaphragm for loudspeaker, sub cone for loudspeaker, dust cap for loudspeaker and loudspeaker
View Patent ↗A manufacturing method of a paper making part for a loudspeaker has freedom of adjusting a characteristic and a sound quality, and has a higher productivity. Accordingly, a fibrillating step of a paper making material is achieved by an explosive crushing step. Alternatively, the step is achieved by a mixing step of a paper making material and a liquid, a material micro-fabricating step of applying a pressure to a mixed solution obtained by the mixing step so as to pass through an orifice and thereafter run into a device wall, and a paper making step including the micro-fabricated material.
1. A manufacturing method of a paper making part for a loudspeaker in accordance with a paper making molding comprising:
a fibrillating step of a paper making material, the fibrillating step including an explosive crushing step executed by a steam cooking explosive crushing step and an alkali step executed simultaneously with the explosive crushing step; and
a paper making step of the fibrillated material obtained by the fibrillating step.
2. The manufacturing method of the paper making part for the loudspeaker according to claim 1 , further comprising a beating step is further of beating the fibrillated paper making material between the fibrillating step and the paper making step, wherein the paper making step comprises a paper making step of the beaten paper making material.
3. The manufacturing method of the paper making part for the loudspeaker according to claim 2 , wherein the beating step comprises a micro-fibrillating beating step of micro-fibrillating beating the fibrillated paper making material.
4. The manufacturing method of the paper making part for the loudspeaker according to claim 3 , wherein the beating step is executed by bearing the paper making material by any one of a beater, a refiner and a mixer.
5. A diaphragm for a loudspeaker manufactured in accordance with the manufacturing method of the paper making part for the loudspeaker according to claim 1 .
6. A sub cone for a loudspeaker manufactured in accordance with the manufacturing method of the paper making part for the loudspeaker according to claim 1 .
7. A dust cap for a loudspeaker manufactured in accordance with the manufacturing method of the paper making part for the loudspeaker according to claim 1 .
8. A loudspeaker comprising:
a magnetic circuit;
a frame coupled to the magnetic circuit;
the diaphragm for the loudspeaker according to claim 5 ; and
a voice coil partly arranged in a magnetic gap of the magnetic circuit.
9. A loudspeaker comprising:
a magnetic circuit, a frame coupled to the magnetic circuit;
a diaphragm;
the sub cone for the loudspeaker according to claim 6 ; and
a voice coil partly arranged in a magnetic gap of the magnetic circuit.
10. A loudspeaker comprising:
a magnetic circuit, a frame coupled to the magnetic circuit;
a diaphragm, the dust cap for the loudspeaker according to claim 7 ; and
a voice coil partly arranged in a magnetic gap of the magnetic circuit.
11. The manufacturing method of the paper making part for the loudspeaker according to claim 3 , wherein the paper making material includes a bamboo fiber, and the micro-fibrillating beating step comprises a step of micro-fibrillating beating the fibrillated paper material at a level not more than 200 milliliter in Canada standard beating degree.