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Assignee3M Innovative Properties Company
InventorsJunyi Yang, Jiangdong Tong, Mary E. Johansen, Jacob D. Yound, Shaun M. West, Christopher J. Rother, Ingrid N. Haugan Smidt, Barbara L. Kellen, Troy J. Anderson
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A diaphragm for a microspeaker has an organic polymer film layer in direct contact with one or two skin layers. The one or two skin layers independently include a block copolymer having hard segments and soft segments, in which a portion of the hard segments is included in crystalline, physical crosslinking domains. The organic polymer film layer is not tacky at 25° C. A process of making the diaphragm is also described. The process includes coextruding the block copolymer and an organic polymer to provide a multilayer film comprising the one or two skin layers and the organic polymer film layer in direct contact with the one or two skin layers. A microspeaker including the diaphragm is also described.
A diaphragm for a microspeaker, the diaphragm comprising:
A diaphragm for a microspeaker, the diaphragm comprising one or two skin layers coextruded with an organic polymer film layer in direct contact with the one or two skin layers, the one or two skin layers independently comprising a block copolymer comprising hard segments and soft segments, wherein a portion of the hard segments are included in crystalline, physical crosslinking domains.
Dependencies are inferred from the claim text.