Currently, various sectors of society are increasingly recognizing the concept of green environmental protection, especially the strict management of waste plastic packaging products. The recycling of plastic packaging waste is considered an effective way to control environmental pollution, utilize resources efficiently, and save energy. So how should we deal with discarded plastic packaging boxes?
The recycling and treatment technology of plastic packaging waste can be roughly divided into three types: recycling and reuse technology, incineration to obtain usable or recovered raw materials technology, and landfill technology. Recycling and reuse is a positive method to promote material recycling and is an effective recycling and treatment method to protect resources and the ecological environment. This method can be divided into three types: recycling and reuse, mechanical treatment and recycling, and chemical treatment and recycling. Recycling refers to the process of no longer processing, but directly reusing after cleaning.
Mechanical processing and reuse include two categories: direct and modified recycling. Direct recycling mainly refers to the direct plasticization of waste plastics after pre-treatment and crushing, followed by molding and granulation. This method is mainly used for packaging scraps and residues in the production process of products. They can be directly fed into the hopper and used together with new materials without any pre-treatment; It can also be used for plastic containers that have been used but are very clean and free of any pollution. Secondly, after pre-treatment such as separation, washing, drying, and crushing, especially for contaminated products, rough washing is necessary to remove impurities such as sand, stones, and gold to prevent damage to the machine; Then centrifuge and dehydrate, and then send it to the crusher for precision washing to remove impurities inside the packaging. After washing and drying, it is directly plasticized or granulated. Its objects are generally packaging containers, pockets, films, etc. of various purposes and shapes.
Or it may require special preprocessing. For example, PS foam plastic has a large volume and is not easy to input into the processing machinery, so it is necessary to carry out defoaming and volume reduction treatment in advance. Due to the different types of products, different defoamers are used. The purpose of publishing and printing modified recycling is to improve the basic mechanical properties of recycled materials and meet the quality needs of recycled specialized products.
