Paper pulp moulding making machine

  The paper tray production line is composed of a pulping system, a forming system, a drying system, a stacking system, a vacuum system, a high-pressure water system and an air pressure system. It is used to produce egg trays, fruit trays, beverage trays, wine trays, coffee trays, medical Products such as care. Using waste paper such as waste newspapers, waste carton paper, office paper, scraps and other waste paper as raw materials, it is prepared into a slurry of a certain concentration through hydraulic crushing, filtration, water injection and other processes, and is vacuum-formed on a special metal mold through a reciprocating forming machine. It is absorbed into a wet blank, which is then dried in a drying line and then stacked.

(1) Process overview

1. After the raw material - waste paper (or raw pulp cardboard) is broken into pulp fibers using a hydraulic pulper, in order to have special functions of the product (such as waterproof, moisture-proof, anti-static, etc.), add a small amount of Functional additives are added, and clean water is added to adjust the slurry in the storage tank to the concentration required for molding. Through vacuum adsorption, the slurry is formed into a wet blank on a special mold. The formed wet blank is then dried and hot pressed. Plastic surgery is the finished product.

2. Simple production process: raw material (waste paper) → hydraulic pulping → pulp water storage tank → pulp mixing system → pulp suction molding → dehydration and drying → hot pressing molding → packaging → finished product.

3. Raw materials: The raw materials for producing pulp molded products are mainly waste newspapers, carton paper, and scrap paper from paper mills, carton factories, and printing factories. The raw materials used are rich in resources, low in price, and are recycled waste.

There is no waste water or waste gas discharged during the production process. The water used in the production process is recycled, which will not cause pollution to the environment and can save water costs.

4. By changing the mold, the same equipment can produce a variety of paper tray products, such as egg trays, egg boxes, bottle trays, fruit trays, inner packaging of electronic products, etc.

(2) Pulp making process

The raw materials (waste paper or pulp) are broken down into fibers and suspended in water by hydraulic action, and then necessary additives and water are added according to the process requirements to form a slurry that meets the molding requirements.

(3) Plastic surgery process

After the egg tray products are formed and dried, they are basically finalized. The finished products can be directly put into warehouse for storage after manual sorting or packaging;

The production process of egg cartons and industrial packaging products requires an additional shaping process after drying. The products are shaped using a hot press shaping machine to make the products neat and beautiful in appearance, achieve better toughness, and have better shock-proof performance. .

The shaping process generally uses electricity (or thermal oil) to heat the heating plate to make the metal mold have a higher temperature (180~250℃), and uses pneumatic or hydraulic pressure to press the pulp products to achieve the shaping effect.

After plastic surgery, some products also need to be labeled or printed with patterns, text, etc. on the surface.

1. The equipment has compact structure and small floor space.
2. The equipment has high production efficiency and good operating performance.
3. The product quality is good and its exquisite appearance is difficult to achieve by other semi-automatic models, which makes pulp molded products enter the field of inner packaging of goods and be more widely used.
4. High degree of automation, using PLC engineering and intelligent touch screen control system, simple operation and precise control. The working status of the equipment is intuitive and has fault display and alarm functions.
5. The metal drying line has a high degree of automation. You can control the temperature, fan, dehumidification, drive speed and drying time via PLC. This reduces labor and increases production.
6. The equipment combustion chamber is separated from the vertical multi-layer drying chamber. What enters the drying box is pure hot air, which is pollution-free and has no fire hazard.