Title:
VIBRATING DIAPHRAGM FOR LOUDSPEAKER, PREPARATION METHOD FOR VIBRATING DIAPHRAGM FOR LOUDSPEAKER, AND SOUND GENERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/257782
Kind Code:
A1
Abstract:
Disclosed in the present application are a vibrating diaphragm for a loudspeaker, a preparation method for a vibrating diaphragm for a loudspeaker, and a sound generating device. The vibrating diaphragm for a loudspeaker comprises an aqueous acrylate adhesive film layer and two cover film layers, wherein one of the two cover film layers covers one surface of the aqueous acrylate adhesive film layer, and the other cover film layer covers the other surface of the aqueous acrylate adhesive film layer. At least one of the two cover film layers is a thermoplastic elastomer film layer, and the aqueous acrylate adhesive film layer is prepared from an acrylate emulsion, a curing agent, a wetting agent and a defoaming agent, the weight-average molecular weight of an acrylate polymer in the acrylate emulsion being between 200,000 and 2,000,000. Since the glue forming the aqueous acrylate adhesive film layer takes water as a medium, which is environmentally friendly and pollution-free, the potential safety hazards present during the preparation of the vibrating diaphragm for a loudspeaker are effectively reduced. Moreover, the bonding force between the aqueous acrylate adhesive film layer and the thermoplastic elastomer film layer is strong, such that the structural strength of the vibrating diaphragm for a loudspeaker can be increased.
Inventors:
WANG TING (CN)
YAN FUZHEN (CN)
LI CHUN (CN)
YAN FUZHEN (CN)
LI CHUN (CN)
Application Number:
PCT/CN2022/095636
Publication Date:
December 15, 2022
Filing Date:
May 27, 2022
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
H04R7/12; C08F220/18; C09J133/08; H04R9/02
Foreign References:
| CN113423046A | 2021-09-21 | |||
| CN113423045A | 2021-09-21 | |||
| CN110446143A | 2019-11-12 | |||
| CN112724887A | 2021-04-30 | |||
| CN112250789A | 2021-01-22 | |||
| CN111836174A | 2020-10-27 | |||
| CN111935603A | 2020-11-13 | |||
| CN208638647U | 2019-03-22 | |||
| CN110511700A | 2019-11-29 | |||
| CN103387806A | 2013-11-13 | |||
| JPH0551570A | 1993-03-02 |
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