10 Difficulties of Plastic Recycling

 

1

Identification Technology for Plastics

There are many types of Plastics, and there is no practical identification technology that can be operated on the spot, and the judgment is based on experience; identification is the most basic technology, and it is very experienced. There is no one that is difficult to master in 3 years or 5 years.

 

Combustion identification is the most common, but it requires experience. In addition to experience, there are actually mature and simple experimental methods that can identify more than 100 kinds of plastics in more than 10 different categories. Without this handyman, it is easy to purchase waste. If you look away, the products everyone is familiar with are either high in price or out of stock.

 

 

 

 

2

Cleaning Technology

Non-polluting Plastic Cleaning and cleaning technology (plastic surface coating, self-adhesive paper, paper, metal, wood and other impurities, removal of recycled plastic odor, application areas that require high cleaning effects: such as PET bottle flakes). Many solvent-based cleaning technologies are simply poisoning humans. Be careful and call on peers not to use them, including those recommended on the website recently. Recently, I have seen many places recommending certain cleaners specifically for the field of waste plastic recycling. Here to talk about the major hazards of solvent-based cleaners.

 

The first major hazard: poisoning the staff in specific operations, sterilization \ cancer \ leukemia, many malignant diseases are related to many organic solvents;

 

The second major hazard: pollution of water sources;

 

The third major hazard: fire and explosion accidents are prone to occur;

 

The fourth major hazard: in the absence of any changes in appearance, in fact, many solvents have a great impact on the performance of plastics, especially engineering plastics, but they cannot be observed with the naked eye without testing equipment;

 

Fifth major hazard: be more careful if heating is required. The solvent is very volatile, and heating is easy to fail. It is said that it can be used repeatedly, and it is difficult to say what will happen if it is used once or twice.

 

 

 

 

3

Separation technology

Plastic Sorting Machine

 

1. Separation of various impurities in plastics: air separation for density separation, and other mature separation equipment for various water media, such as electrostatic separation and magnetic separation;

 

2. Separation technology of mixed plastics with the same density (PET/PVC, ABS/HIPS, PP/PE, various electrical mixed plastics) (the world's leading plastic flotation technology, the core technology of the Guangzhou Steel MBA factory);

 

3. Separation technology of different color particles of the same plastic.

 

This is the core technology of the plastic recycling industry, with great difficulty and high added value.

 

 

 

 

4

Recycling of special Plastic products

Recycling technology for composite membranes, recycling of composite plastics; on many websites, there are many news about the sale of composite membranes for German sausages, which cost only 100 euros a ton, because the composite membranes are very difficult to recycle. However, the packaging of Chinese ham sausage is mostly something called PVDC. I don't know the difference between German and domestic ham. There are two recycling methods for composite plastics, one is separation and the other is modification, both of which can greatly increase the added value; but the technical difficulty is very large. Reply to "PVDC" to see more

 

 

 

 

5

Unable to form a closed-loop pollution problem

1. Sewage treatment in the cleaning process;

 

2. Gas pollution and odor removal during the granulation process;

 

3. Disposal of garbage that cannot be recycled.

 

 

 

 

 

6

Value evaluation and application direction judgment

1. The vast majority of companies lack basic inspection and testing equipment, and the industry lacks a recognized pricing basis based on the characteristics of resources;

 

2. The classification and classification of recyclable plastic resources and recycled materials lack operational standards;

 

3. The application of recycled materials lacks systematic research.

 

 

 

 

7

Stable performance and modification technology

This is also a key technical link that can improve the technical content of the plastic recycling industry, but most of the current plastic recycling companies do not have the technology and concepts in this area. In the increasingly competitive real-world environment, the performance of recycled materials and the modification technology are very obvious. important.

 

 

 

 

 

8

Chemical recovery method

Plastic Oil Refining Equipment

 

Plastic Oil Refining, which was very hot in the past, is still very immature due to various reasons. Due to the large investment in equipment, its development has been slow in recent years.

 

 

 

 

9

Recyclable thinking in design

The implementation of the recyclable thinking in the design of plastic products is a key issue for the sustainable development of the plastics industry, and it is to solve the problem at the source, but it is rarely promoted.

 

 

 

 

10

Others

 

There are three key technologies in these problems:

 

1. Plastic Sorting and Separation Technology;

 

2. Non-polluting clean \ cleaning technology;

 

3. Value evaluation and application direction are also one of the key issues.