Speaker Diaphragm Fabric-Paper Integration via Stitching

The patent introduces stitching as an intermediary mechanical connection between the fabric layer and nonwoven fabric layer. The stitching physically penetrates both layers and binds them together, serving as a mediator that bridges the two different materials and ensures strong integration without requiring complex manufacturing processes.

The patent creates a composite structure by combining inorganic fiber fabric with natural fiber nonwoven fabric in a layered configuration. This composite approach allows the diaphragm to simultaneously exhibit high Young's modulus from the fabric layer and high internal loss from the nonwoven fabric layer, while the stitching ensures these different materials work together as an integrated unit.

The patent merges multiple functions into the stitching element: it provides mechanical binding between layers, creates pathways for resin infiltration, and serves as a reinforcement structure. This consolidation achieves strong integration and enhanced mechanical properties without requiring separate complex manufacturing steps for each function.

The patent replaces complex mechanical bonding systems with a simpler resin infiltration process through stitching channels. Instead of using elaborate mechanical fastening or bonding mechanisms, the design allows thermosetting resin to flow through the stitching channels and cure, creating strong chemical bonds that simplify the overall manufacturing process while maintaining high strength.