A sheet material for producing loudspeaker cone and its processing technique

A loudspeaker and sheet technology, applied in the direction of sensors, diaphragm structures, electrical components, etc., to achieve the effects of high pass rate, good rigidity and water resistance, high tear strength and impact strength

Active Publication Date: 2009-10-07
浦江亿通塑胶电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the sheet material of the existing loudspeaker cone, and disclose a sheet material for making a speaker cone with long service life, high tear strength and impact strength, good rigidity and waterproof and its Processing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A sheet for making loudspeaker cones, prepared from the following components by weight percentage:

[0021] Polypropylene 40% Mica Powder 38% Polyethylene Thermoplastic Elastomer 7% Low Density Polyethylene Plastic 6% Calcium Stearate 0.5% Black Masterbatch 2% UV Absorber 0.5% Nano Calcium Carbonate 5% Coupling Agent 0.5% Light Stabilizer agent 0.5%.

[0022] A kind of processing technology for making the sheet material of loudspeaker cone, is characterized in that comprising the following steps:

[0023] 1) Granulation, take polypropylene, mica powder, polyethylene thermoplastic elastomer, low-density polyethylene plastics, nano-calcium carbonate, calcium stearate, ultraviolet absorber, coupling agent and light stabilizer respectively according to the above weight ratio Stir the screw mixer evenly; pour the mixed material into the extruder and extrude it into granules. The speed of the main machine is 30 rpm, the feeding speed is 25 rpm, and the melt pressure is 4MPa;...

Embodiment 2

[0030] A sheet for making loudspeaker cones, prepared from the following components by weight percentage:

[0031] Polypropylene 45% Mica Powder 33% Polyethylene Thermoplastic Elastomer 7% Low Density Polyethylene Plastic 6% Nano Calcium Carbonate 5% Calcium Stearate 0.3% Black Masterbatch 2% UV Absorber 0.7% Coupling Agent 0.4% Light Stabilizer Agent 0.6%.

[0032] A kind of processing technology for making the sheet material of loudspeaker cone, is characterized in that comprising the following steps:

[0033] 1) Granulation, take polypropylene, mica powder, polyethylene thermoplastic elastomer, low-density polyethylene plastics, nano-calcium carbonate, calcium stearate, ultraviolet absorber, coupling agent and light stabilizer respectively according to the above weight ratio Stir the screw mixer evenly; pour the mixed material into the extruder and extrude it into granules. The speed of the main machine is 35 rpm, the feeding speed is 27 rpm, and the melt pressure is 5 MPa...

Embodiment 3

[0040] A sheet for making loudspeaker cones, prepared from the following components by weight percentage:

[0041] Polypropylene 50% Mica Powder 25% Polyethylene Thermoplastic Elastomer 8% Low Density Polyethylene Plastic 5% Nano Calcium Carbonate 7% Calcium Stearate 0.4% Black Masterbatch 3% UV Absorber 0.6% Coupling Agent 0.6% Light Stabilizer Agent 0.4%.

[0042] A kind of processing technology for making the sheet material of loudspeaker cone, comprises the following steps:

[0043] 1) Granulation, take polypropylene, mica powder, polyethylene thermoplastic elastomer, low-density polyethylene plastics, nano-calcium carbonate, calcium stearate, ultraviolet absorber, coupling agent and light stabilizer respectively according to the above weight ratio Stir the screw mixer evenly; pour the mixed material into the extruder and extrude it into granules. The speed of the main machine is 35 rpm, the feeding speed is 30 rpm, and the melt pressure is 6 MPa;

[0044] 2) Extrude the...

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Abstract

The invention relates to the material for producing loudspeaker cone. A sheet material for producing loudspeaker cone is formed by the following components in weight percentage: 40%-50% of Polypropylene, 25%-40% of mica powder, 5%-12% of polyethylene thermoplastic elastomer, 3%-10% of low-density polyethylene plastic, 3%-10% of nanometer calcium carbonate, 0.1%-0.7% of calcium stearate, 1%-3% of black master batch, 0.2 %-0.7% of ultraviolet absorbent, 0.1%-0.7% of coupling agent, 0.2%-0.7% of light stabilizer. The sheet material has advantages of long life, high tear strength and high intensity of impact resistance, high pass rate of product forming, good rigidity and waterproof.

Description

technical field [0001] The invention relates to materials for making loudspeaker cones. Background technique [0002] The traditional speaker cone is the main medium for the speaker to transmit sound outward. Its hardness, rigidity, damping size and vibration sensitivity are the keys to determining the efficiency and response of the speaker. The speaker cone is made of special sheet materials. At present, there are mainly two types of speaker cone sheets on the market. One is made of traditional paper materials. Paper cones are very sensitive to the environment (especially humidity). When the environmental humidity changes, the moisture in the paper will The subsequent changes lead to changes in quality parameters. In addition, the rigidity of the paper sound cone is insufficient, and the deviation during paper production is large, which is not conducive to the consistency of batch products. The other is made of polypropylene-based materials that are commonly used at presen...

Claims

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Application Information

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IPC IPC(8): H04R31/00H04R7/02
Inventor 毛丛敏
Owner 浦江亿通塑胶电子有限公司
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