Sound-Absorbing Material with Zoned Freezing for Block Integrity

The patent applies parameter changes by controlling freezing temperature and adding additives to modify the freezing behavior of the slurry. Specifically, the slurry is frozen at controlled temperatures to prevent excessive volume expansion, and additives are introduced to inhibit layered ice crystal formation, thereby maintaining block integrity during the freezing process

The patent uses additives as intermediaries to mediate the freezing process. These additives are incorporated into the slurry before freezing and act to prevent the formation of large, layered ice crystals that cause fracturing. The additives modify the freezing dynamics to produce a more uniform, fine-grained ice structure that preserves block strength

The patent employs porous block-shaped sound-absorbing materials instead of loose particles. The porous structure provides the necessary sound-absorbing performance while the solid block form eliminates static electricity interference and powder loss associated with particle-filled speakers

The patent transitions from using disposable loose particles that cause contamination and static issues to durable block materials that can be permanently installed. The block materials eliminate the need for filling operations and avoid the harmful effects of particle-based systems

The patent implements continuous freezing operations using a freezing conveyor belt system. The slurry is continuously fed onto the conveyor and frozen in a continuous process, eliminating batch processing steps and significantly improving production efficiency and yield while maintaining block integrity

The patent replaces complex, multi-step mechanical preparation processes with a streamlined freezing-based approach. The freezing process naturally forms solid blocks without requiring additional molding or shaping operations, simplifying the overall manufacturing system and improving productivity