2. Packaging bag processing requires a slitter, also known as a slitter, which is an essential equipment for automatic film rolling of food. The highest cutting speed of computer automatic cutting machine can reach 300 meters per minute, which is at the leading level among cutting machines and equipment in the same industry.
A good slitter with a good master can cut the film with accurate specifications and high flatness. It can be used stably on automatic packaging machine, and there will be no film sticking and film breaking.
3. Bag-making machine is the equipment used in the last process of food packaging bag production. According to the different bag shapes of packaging bags, different bag-making machines are used. For example, the production of three-sided sealed vacuum bags, the use of three-sided sealed heavy bag-making machines, the production of self-standing bags and zipper bags, the need for zipper bag-making machines. Make center bags, tea bags, etc. , using the middle sealing bag making machine.
4. Dry laminating machine is a machine that bonds different plastic films together to form a composite film through dry laminating process. Dry compounding process means that the solvent in the glue solution is fully dried by heating and exhausting after gluing, and then compounded in a "dry" state. In view of the fact that the dry compound machine can compound different plastic films, aluminum foils and even paper, the requirements for the dry compound machine are higher.
5. After the liquid plastic is sprayed out, the plastic body is blown by the wind blown out by the machine and attached to a certain mold cavity, thus making the product. This kind of machine is called blow molding machine.
Extended data
Woven bag is a kind of plastic, which is used for packaging. Its raw materials are generally chemical plastics such as polyethylene and polypropylene. Plastic woven bags are made of polypropylene resin as the main raw material, extruded and stretched into flat yarns, and then woven into bags.
The main product produced abroad is polyethylene? (PE), domestic production is mainly polypropylene (PP). Polyethylene is a thermoplastic resin prepared by ethylene polymerization. In industry, it also includes * * * polymers of ethylene and a small amount of α-olefins.
Polyethylene is odorless and nontoxic, feels like wax, and has excellent low temperature resistance (the lowest service temperature can reach -70 ~- 100℃), good chemical stability, resistance to most acid and alkali corrosion (oxidation acid resistance), insolubility in general solvents at room temperature, low water absorption and excellent electrical insulation performance. However, polyethylene is very sensitive to environmental stress (chemical and mechanical effects) and has poor thermal aging resistance.
The properties of polyethylene vary from variety to variety, mainly depending on the molecular structure and density. Products with different densities (0.9 1 ~ 0.96g/cm3) can be obtained by different production methods. Polyethylene can be processed by molding ordinary thermoplastics.
Widely used in the manufacture of films, containers, pipes, monofilaments, wires and cables, daily necessities, etc. , which can be used as high-frequency insulating material for TV and radar.
Reference: Baidu Encyclopedia? Plastic woven bag production line