Process analysis of biodegradable disposable cutlery products

Contemporary disposable tableware generally uses paper and plastic as packaging products, because the low price of paper and plastic is conducive to production and processing, and the raw materials have a wide range of origins, so paper and plastic packaging products are widely used in daily life. As everyone knows, because plastic packaging products cannot dissolve on their own, they will cause air pollution and other problems. The problem of garbage pollution in China is also the most classic example. With the rapid development of the times and the regulations of global economic integration, green environmental protection has gradually become the consensus of today's society, and has become another shining point in the development of China's catering industry. According to the quantitative analysis and evaluation of international experts and professors, only paper is the green and environmentally friendly raw material with the most development potential. In recent years, the development trend of biodegradable disposable cutlery machinery and equipment in China is very fast, and it is gradually improving. With the continuous marketing and promotion of the application field of biodegradable disposable cutlery products, the demand for biodegradable disposable cutlery products continues to increase, and the production process of biodegradable disposable cutlery and the design of die-casting molds must be gradually improved and improved.

Process analysis of biodegradable disposable cutlery products

1. Production process

In general, the whole production process of biodegradable disposable cutlery products is shown in Figure 1 below. The production process can be changed according to the different requirements of customers on equipment, mainly including slurry preparation, forming, pressing and shaping, Auxiliary processes such as shaping, shaping and packaging.

2. Selection of raw materials for biodegradable disposable cutlery products

The origin of biodegradable disposable cutlery products is specifically divided into: bagasse, straw pulp and reed pulp, etc., generally bleached product pulp (for plastic lunch boxes) or waste paper (for industrial production of outer packaging). It is not easy to cause secondary pollution in the whole process of production, manufacture and application. The products have the advantages of light quality, compressive strength and shock resistance, good cache characteristics, antistatic, strong air permeability and good reproducibility.

Biodegradable disposable cutlery products are generally divided into plastic lunch boxes and industrial production packaging. The production methods are basically the same. Only the raw materials used in the production of plastic lunch boxes are bleach product pulp. The quantitative analysis and size indicators are relatively strict, and To carry out sterilization, moisture-proof and oil-resistance solutions, machinery and equipment and conveying pipes are mostly made of stainless steel plates and plastics. The inner cavity of the storage tank is lined with floor tiles, which also requires high hygiene for industrial plants and users.

3. Pulping

Pulping is a process for the manufacture of biodegradable disposable cutlery products. The pulping process includes: disintegrating the pulp board into chemical fiber slurry with a hydroelectric pulper, selecting the disintegrated chemical fiber slurry, removing sand and purifying it, and then appropriately separating the chemical fiber according to the refiner. Brooming to improve the bonding between chemical fibers. In the pulping process, strict control of the refining degree of various pulps is particularly important for the product formation and product quality of the subsequent process. If the degree of refining is too high, it will be difficult to filter the water when the product is vacuum pumped and formed. After drying in the drying furnace, the product will have a relatively large shrinkage and deformation. If the refining time is too low, the fusion compressive strength of the product will be low, and the stiffness and tensile strength of the product will be greatly reduced, which will directly affect the performance indicators of the equipment.