Magnetic tape manufacturing process who has ah?

The magnetic powder, solvent and various fillers are mixed and diluted according to the ratio and sent to the sand mill for dispersion. After the magnetic slurry dispersion is sufficient, to filter out impurities and cohesion, and then add a curing agent to the coating machine, the coating machine will be evenly coated in the magnetic slurry on the surface of the tape base. Typical coating methods are reverse roller coating, scraper coating, concave plate coating or extrusion coating. The orientation of the powdered needles is random during coating, and for longitudinal recording tapes, directional magnets are used to align the magnetic particles. The coated tape is dried to allow the solvent to evaporate before calendering, which can be accomplished by squeezing the surface of the magnetic layer with a steel roller with a surface roughness of R. better than 0.05 IV1 . The purpose of calendering is to compact the magnetic layer and ensure good contact between the tape and the heads during use. After calendering, the tape is rolled up and cured to allow the intermolecular polymerization of the adhesive inside the magnetic layer to form a mesh***polymer, which improves the adhesion, strength, abrasion resistance, thermal stability, and corrosion resistance of the magnetic layer. Finally, the tape is sent to the cutting machine to be cut into tapes of suitable width. ┌────┐ │Pulping │└────┘┌──┐ │Calendering │ └──┘┌────┐ │Filtering │└────┘┌──┐ │Cutting │ └──┘┌────┐│ Coating ││(Magnetic Orientation)│└────┘ With the increasing demand for recording density and the amount of information to be stored in the data, the materials and processes used in the magnetic recording technology are also advancing continuously. At present, new materials such as metal particle magnetic powder and perpendicular magnetic recording magnetic materials are constantly appearing, and new processes such as vacuum sputtering, vacuum evaporation and other recording film preparation methods have been practical. C idQi ZhiZQO Magnetic Tape Manufacturing (mna, etic taPe~ufacturing) Magnetic tape consists of a tape base and a magnetic layer coated on the tape base. Magnetic layer Magnetic tape structure The width of computer tape is 3.81~(0.coincident in), 6 .3mm(0.25 in), 12.65mrn(0.sin), 25.4tnm(lin), etc. The tape can be structured into a tape disk, which can be divided into a tape disk, a tape tape disk, a tape tape disk, a tape tape disk, a tape tape disk, a tape tape disk, a tape tape disk, a tape tape disk, a tape tape disk, and so on. From the structure can be divided into two categories: open tape with a disk and cassette tape with a cartridge. The material used for the tape disk of the open tape can be plastic or aluminum alloy; the material used for the cassette of the cassette varies according to the different requirements of the structural components, and is generally injection molded with ABS (acrylonitrile butadiene butadiene styrene), PS (polystyrene), AS (styrene a acrylonitrile binary **** polymers), POM (polyoxymethylene), and other plastics. Magnetic tape with the base material is usually PE dish, film (polycool film), the magnetic layer is mainly composed of needle-like sheep F by a few or [Bu sheep F spoon q and other magnetic particles and adhesives, antifriction agents, antistatic agents, lubricants, and sometimes plasticizers, stabilizers, mildew agents, and other filler mixtures. Magnetic tapes are now mostly produced by the coating process. Traditional coated manufacturing