### 1. Overview Of Plastic Treatment Technology
Plastic processing: From raw materials to the shaper of modern life
Plastic processing is an indispensable and important link in modern manufacturing. It turns raw plastic particles into various products that are everywhere in our daily lives. From food packaging to medical equipment, from auto parts to building materials, plastic processing technology has profoundly influenced all aspects of modern society.
### 1. Overview of plastic treatment technology
Plastic processing is the process of converting synthetic resins or plastic particles into product of practical value through a specific process. This process began in the mid-19th century and sprouted with the invention of celluloid. In the early 20th century, the emergence of phenolic resins marked the entry of plastic processing into the industrial stage. After World War II, the rapid development of petrochemicals provided sufficient raw materials for plastic processing and promoted innovation in processing technology.
The main methods of plastic processing include injection molding, extrusion molding, blow molding and thermal forms. Injection molding is suitable for the production of parts with complex shapes and precise dimensions; extrusion molding is mainly used to produce continuous products such as pipes and profiles. Blow molding is widely used in the production of hollow products. Thermoforming is suitable for the production of thin-walled products.
The development of plastic processing equipment has evolved from simplicity to complexity, from manual to automation. Modern plastic processing equipment integrates precision machinery, automatic control and intelligent monitoring systems that can achieve efficient and precise production.
### 2. The core process of plastic treatment
The injection molding process is a treatment method in which molten plastic is injected into the mold cavity and the product is obtained after cooling and solidification. The core of this process is the precise control of injection pressure, temperature and time parameters. Modern injection molding machines adopt servo control systems, which can achieve precise control at 0.01mm level.
The extrusion molding process continuously extrudes the plastic through screws and then cools and fixes after oral molding. The key to this process is screw design and temperature control. The emergence of twin-screw extruders greatly improve mixing effect and production efficiency.
The blow molding process uses compressed air to expand the thermoplastic Parison chamber so that it can be formed close to the inner wall of the mold. This process dominates the production of container products. The development of multi-layer co-cutting blow molding technology enables the product to have better barrier characteristics and mechanical strength.
The thermoforming process softens the plastic sheet by heating and then forms the mold using vacuum or air pressure. This process has the advantages of low equipment investment and low mold costs and is widely used in the packaging industry.
### 3. Innovation and development of plastic processing technology
New processing technologies are emerging continuously, such as microporous foam forming technology, gas-assisted injection molding technology, etc. These technologies not only improve product quality, but also save materials. Microcell foam technology can reduce the weight of the product by 20%, while increasing the impact.
Intelligent manufacturing is increasingly used in plastic processing. The integration of industrial robots, machine vision systems and Internet of Things technology enables intelligent control of the production process. Smart factories can monitor production status in real time, automatically adjust process parameters, and ensure stable product quality.
Green manufacturing technology has become an important direction for industry development. Biodegradable plastic processing technology, plastic recycling and reuse technology, etc. effectively reduce environmental pollution. Compared with traditional processes, water-assisted injection molding technology can save more than 30% of energy.
The advancement of plastic processing technology continues, and the continuous emergence of new materials and new processes has injected new vitality into the development of the industry. In the future, plastic processing will develop in a more accurate, smarter and more environmentally friendly direction, thereby creating more value for human society.
