The disposable shoe cover eliminates the trouble of taking off the shoes of the visitors and the common shoe covers that are environmentally friendly, and are widely used in high-demand environments such as electronics, chemicals, clean rooms, and clean rooms. Common disposable shoe covers include non-woven shoe covers, CPE shoe covers, and plastic shoe covers. The functions have their own characteristics, including non-slip shoe covers, rain shoe covers, and anti-static shoe covers.
Disposable shoe covers are used to make commercial film. There are many kinds of polyester, mainly cellulose acetate, nitrocellulose, polyamine, Teflon, polycarbonate, polyurethane, polyester, poly. Ethylene, polypropylene, polysulfide, and the like. There are four ways to make the membrane filter: sintering, casting, stretching and leaching, and etching.
Sintering is the dissolution of rigid ceramic, glass or metal powder by high pressure and high temperature, so that the powder is kneaded together to form a solid film or sheet. The porosity of the film formed by sintering is low.
Casting is to spread the solution containing the vinegar and form a porous, colloidal thin enamel. Casting is the main method of producing membrane filters.
Stretching is the application of a dense plastic film or polypropylene film that is carefully stretched in all directions under precisely controlled conditions. As the stretching process progresses, the surface of the film forms an emblem. The size of the hole is determined by the way of stretching. The film filter material on the market is usually made by a stretching process.
Etching, also known as immersion, is completely different from other methods of making membrane filters. It uses a parallel micro-radioactive micro-radical bombardment of a polyester film suitable for coating, until the polyester film is broken down to form a through-hole perpendicular to the film surface.