Telephone receiver film and preparation method thereof

A film and earpiece technology, applied in the field of earpiece film and its preparation, can solve the problems affecting the sound quality of the speaker, poor rigidity of the plastic film, unstable sound quality, etc., and achieve the effects of convenient positioning and fixing, good conductivity, and small elastic hysteresis

Active Publication Date: 2016-10-12
DONGGUAN FORBETTER PLASTIC & ELECTRONICS PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, paper films have been around for a long time and are widely used in some speakers. However, due to the shortcomings of paper films, which are easy to be affected by moisture, the sound quality is unstable, and they are gradually replaced by other films.
Plastic film has the advantages of low cost, good plasticity, and easy processing, but the rigidity of plastic film is poor, which seriously affects the sound quality of the speaker
However, no matter paper material or plastic material, due to material reasons, it is impossible to achieve ultra-thin thickness, and the structure of the setting is unreasonable, so it is impossible to produce the best sound quality of the sound film material.

Method used

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  • Telephone receiver film and preparation method thereof
  • Telephone receiver film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for preparing an earpiece film, comprising the following steps,

[0042] Step (A): Overlap, cut, punch and cut the middle original film and the surface original film to make a cover film. The cover film includes 2 sets of middle frames formed by the middle original film and 3 sets of surface frames punched out of the surface original film ;

[0043] Step (B): Use the fan gate to fill out the original engineering film, and then punch and cut it into small pieces to make the engineering film group;

[0044] Step (C): Clean the middle frame group 2, the surface frame group 3 and the engineering film group, coat the upper and lower surfaces of the middle frame group 2 with powder and glue, and then attach the surface frame group 3 to the upper surface of the middle frame group 2 , and finally stick the engineering film group on the lower surface of the middle frame 2 group, stamping and cutting out several earpiece films;

[0045] Wherein, the engineering film gr...

Embodiment 2

[0056] The difference between this embodiment and Embodiment 1 lies in that the fan gate filling temperature in step (B) of this embodiment is 120° C., the locking pressure is 40 bar, and the locking speed is 12 s. The cleaning described in the step (C) is specifically coating and cleaning twice with a silica gel cleaning agent, and the coating thickness is 0.5 mm. The powder coating in the step (C) is specifically to use beryllium copper metal powder to spray on the surface ring 3 , the spraying temperature is 80° C., and the spraying thickness is 0.02 mm. The gluing in the step (C) uses a silane adhesive, the gluing pressure is 60 bar, and the hardness of the silane adhesive is 70 degrees.

[0057] The intermediate original film is composed of PEN:PEEK with a mass fraction of 1:2.

[0058] The Young's modulus of the earpiece film is 5400N / mm 2 , with a density of 1.3g / cm 3 , the glass transition temperature is 150°C, the relative damping is 0.48, the elongation is 400%, t...

Embodiment 3

[0060] The difference between this embodiment and Embodiment 1 lies in that the fan gate filling temperature in step (B) is 110° C., the locking pressure is 20 bar, and the locking speed is 10 s. The cleaning described in the step (C) is specifically to use a silica gel cleaning agent to coat and wash twice, and the thickness of the coating is 0.2 mm. The powder coating in the step (C) is specifically spraying on the surface ring 3 with beryllium copper metal powder, the spraying temperature is 110° C., and the spraying thickness is 0.03 mm. The gluing in the step (C) uses a silane adhesive, the gluing pressure is 60 bar, and the hardness of the silane adhesive is 70 degrees.

[0061] The intermediate original film is composed of PU:PET with a mass fraction of 1:2.

[0062] The Young's modulus of the earpiece film is 5200N / mm 2 , with a density of 1.2g / cm 3 , the glass transition temperature is 130°C, the relative damping is 0.45, the elongation is 300%, the tensile strengt...

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Abstract

The invention relates to the technical field of voice film, and specifically relates to telephone receiver film and a preparation method thereof. The method comprises the steps of A, overlapping, cutting, punching and clipping intermediate original film and surface original film, thereby preparing sleeve film, wherein the sleeve film comprises an intermediate frame group formed by the intermediate original film, and a surface frame group punched from the surface original film; B, preparing engineering original film by filling through a fan gate, and punching and clipping the engineering original film, thereby preparing engineering film group; and C, washing the intermediate frame group, the surface frame group and the engineering film group, bepowdering and cementing the upper surface and lower surface of the intermediate frame group, adhering the surface frame group on the upper surface of the intermediate frame group, adhering the engineering film group on the lower surface of the surface frame group, and carrying out punching and clipping to prepare a plurality of pieces of telephone receiver film. The preparation method of the telephone receiver film is simple; mass production can be realized; the miniature telephone receiver film can be prepared; and the prepared telephone receiver film has high elasticity, high toughness, good transient state, high sensitivity, high frequency response and everlasting good sound quality.

Description

technical field [0001] The invention relates to the technical field of sound film, in particular to an earpiece film and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the requirements for a series of audio facilities such as earphones and speakers are getting higher and higher, especially for mobile phones and in-ear earplug speakers. The development trend is to have better and better sound effects and more and more Smaller sound generators. As one of the key components of the sound generator, the thin film has a vital impact on the sound quality of the speaker, and it is more difficult to prepare a small earpiece thin film. Therefore, the design of small earpiece thin films has always been one of the important topics of continuous innovation in the industry. [0003] The objective indicators such as the frequency response curve of the speaker are mainly determined by the geometry of the film, while the subjec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R7/12
CPCH04R7/122
Inventor 邢和平汤教颉丘富强殷海锋王雪胜叶友志
Owner DONGGUAN FORBETTER PLASTIC & ELECTRONICS PRODS
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