Cover film for harmonica and processing method thereof

摘要

Consists of five raw materials: cyclohexanone, dioctyl phthalate, acetone, polyethylene, and silica. After the raw materials are placed in a container and stirred uniformly, a white film with a thickness of about 0.5 mm is laid on the flat glass. 5 chemical raw materials are poured into the center of the film, and are uniformly flattened and dried by a dedicated apparatus. The dried film is put in an oven at 100 ° C., taken out after 5 to 15 minutes, and then flattened, and further the thickness is adjusted to 0. A red film of about 5 mm was pressed into the same size as the white film plane, covered with the processed white film, bonded together with an adhesive, left flat, and then placed in an oven for drying and removal. Cut the object to the size according to the lead specifications. When the product of the present invention is attached to the sound hole, the sound hole is effectively improved in air tightness, crosstalk and breath leakage during harmonica performance are prevented, and the sound quality during harmonica performance is improved. Satisfy your performance needs.