I. Manufacturing process of paper can packaging
- Raw material preparation: The main raw materials for paper can packaging are cardboard and paper. Cardboard is usually made of pulp, and the paper can be ordinary paper or special paper, such as waterproof paper or metal foil paper.
Two. Cardboard manufacturing: The cardboard manufacturing process includes pulp preparation, cardboard forming and cardboard processing. The pulp preparation stage involves mixing pulp with chemicals to form the basic material of cardboard. In the cardboard forming stage, the pulp is poured into the forming machine and the cardboard is formed by extrusion and drying. The cardboard processing stage includes cutting, folding and bonding processes to make cardboard of the desired shape and size.
- Paper manufacturing: The paper manufacturing process includes pulp preparation, paper molding and paper processing. The pulp preparation stage is similar to that of cardboard manufacturing. In the paper forming stage, the pulp is poured into the forming machine to form the paper through filtration and drying. The paper processing stage includes coating, printing and coating processes to enhance the characteristics and appearance of paper.
- Paper can manufacturing: The paper can manufacturing process includes the printing, cutting and bonding of cardboard and paper. First of all, cardboard and paper go through the printing process to increase the decorativeness and information transmission function of the paper can. Then, the cardboard and paper are cut according to the design requirements to form various parts of the paper can. Finally, the cardboard and paper are assembled into a complete paper can through the bonding process.
II. Selection of materials for paper can packaging
- Cardboard selection: The cardboard commonly used in paper can packaging is corrugated cardboard and cardboard. Corrugated cardboard is composed of a layer of corrugated paper and two layers of paper, which has good compressive resistance and cushioning performance. Cardboard is made of multi-layer cardboard glued, which has high strength and rigidity.
Two. Paper selection: The commonly used papers in paper can packaging include ordinary paper, waterproof paper and metal foil paper. Ordinary paper is suitable for general packaging needs, waterproof paper can be used for product packaging that require moisture-proof performance, and metal foil paper can be used for product packaging that need to protect against light and oxygen.
