Abstract: An aluminum plastic film for a lithium battery and a method for manufacturing the same are provided. The method includes steps as follows: preparing a polyolefin adhesive; coating the polyolefin adhesive onto one surface of an aluminum foil layer; disposing an inner polyolefin layer onto the polyolefin adhesive; and drying the polyolefin adhesive, so that a polyolefin adhesive layer is formed between the aluminum foil layer and the inner polyolefin layer. Components of the polyolefin adhesive include a modified polyolefin polymer and a hardener. The modified polyolefin polymer has a modified group, a structure of the modified group contains maleic anhydride, and a molecular weight of the modified polyolefin polymer ranges from 100,000 g/mol to 200,000 g/mol.

Abstract: A multi-layer piezoelectric component includes a plurality of piezoelectric layers, a first inner electrode sheet, a second inner electrode sheet, a first outer electrode, and a second outer electrode. The piezoelectric layers are wound around an axis to form a laminar roll having first and second end faces transverse to the axis. The piezoelectric layers include at least one first layer and at least one second layer. Each of the first and second layers has opposite first and second edges respectively at the first and second end faces, and opposite inner and outer circumferential surfaces. The first and second inner electrode sheets respectively overlie the inner circumferential surfaces of the first and second layers. The first and second outer electrodes are respectively and electrically connected to the first and second inner electrode sheets.

Abstract: A multi-layer piezoelectric component includes a plurality of piezoelectric layers, a first inner electrode sheet, a second inner electrode sheet, a first outer electrode, and a second outer electrode. The piezoelectric layers are wound around an axis to form a laminar roll having first and second end faces transverse to the axis. The piezoelectric layers include at least one first layer and at least one second layer. Each of the first and second layers has opposite first and second edges respectively at the first and second end faces, and opposite inner and outer circumferential surfaces. The first and second inner electrode sheets respectively overlie the inner circumferential surfaces of the first and second layers. The first and second outer electrodes are respectively and electrically connected to the first and second inner electrode sheets.

Abstract: An earphone case includes a base, a wind disc placed on the base for depositing an earphone and its lead wires thereon, and a cap pivotally connected with the base to close on the base. The base and the cap both have a space in an extended portion and a buffer placed in the space and having plural cavities for storing various plugs therein.