Packing Belt Classification

　　1. Pack with alias straps. Packing straps (straps) are mainly made of polyethylene, polypropylene resin, and cold-rolled strip steel, and some are made of nylon and polyester. . In addition to being used for sealing and bundling of corrugated boxes, hot-rolled steel coils, and cold-rolled steel coils, it can also be used for bundling glass, pipes, materials, fruits, etc.

　　2. PP packing belt

　　The manufacturing process of PP strapping starts with temperature control of the extruder, usually at 250°C to 280°C. The next step is cooling. The temperature of the strip material is very high after it leaves the machine head, so it must be cooled in water immediately, because the isotactic polypropylene is easy to form a slug structure under the condition of rapid cooling, and the slug molecular structure is relatively loose. Easy to stretch orientation to obtain high-quality products. Then there is stretching. The purpose of stretching is to improve the longitudinal strength of the strap and reduce elongation. Stretching must be carried out in boiling water, generally, one stretch is used. The last is embossing. After the stretched packing belt passes through two patterned rollers, it is embossed with patterns. Its function is to increase friction during use without slipping, and it looks beautiful on the surface.

　　Three, PET plastic steel belt

　　PET plastic steel belt (also known as PET strapping) is a new type of strap that is popular in the world to replace steel belts.

　　Widely used in steel, aluminum, chemical fiber, cotton spinning, tobacco, paper, metal cans, and other industries.

　　Small elongation: The elongation is only one-sixth of that of the polypropylene (PP) belt, which can maintain the tension for a long time.

　　Strong temperature resistance: the melting point is 260 degrees, and it will not deform when used below 120 degrees.

　　Good flexibility: There is no sharp edge of the steel belt, and the operation is safe, neither hurting the hand nor damaging the tied object.

　　Beautiful and rust-free: there is no danger of the steel belt rusting and polluting the objects to be tied, and the color is bright and recognizable.

　　Four, the main classification of packing belt

　　Packing tape is a kind of packaging material with a wide range of applications. It has a wide variety. According to different classification methods, it can be classified in the following aspects:

　　1. From the quality of PP material consumed, it can be divided into the core-spun belt and solid core belt;

　　2. From the quality of the product, it can be divided into transparent grade A, transparent grade B, grade A, grade AB, grade B, grade BC, and grade C;

　　3. According to the balers used, it can be divided into manual baling belts and machine baling belts (machine baling belts are divided into fully automatic machine tying and semi-automatic machine tying);

　　4. In terms of use, it can be divided into packing belts for packaging and handicraft belts;

　　5. Whether it can be printed can be divided into printing tape and non-printing tape;

　　6. From the perspective of acceptable ability, there are mainly PP packing belts, plastic steel packing belts (also called PET packing belts), and iron packing belts;

　　7. From the source of raw materials for manufacturing packing belts, it can be divided into new material packing belts and recycled material packing belts;

　　8. From the perspective of color, there are mainly white packing tape, gray packing tape, and colored packing tape.