Grasp the future plastic trends!

Lightweight design is one of the trends in future plastic processing technology

Microcellular foam injection molding is a new technology developed under this background

Specially prepared microcellular foamed plastics can also have some functional properties according to product requirements, such as heat insulation, sound insulation, lower dielectric constant,

In recent years, the needs of domestic and foreign industries and the orientation of environmental protection policies have made foam injection molding technology a research hotspot in the field, which has also prompted the continuous development and improvement of this process

Recently, Ren Yixin of Zhejiang University and others introduced the principle and process of microcellular foam injection molding, combined with specific equipment innovation cases in domestic and foreign industries, and reviewed the various functional modules of microcellular foam injection molding equipment respectively.

Article Highlights

Microcellular foam injection molding process

The principle of microcellular foam injection molding is to use the method of rapidly changing process parameters such as temperature and pressure to make the polymer-melt gas homogeneous system carry out microcellular foaming to form products

First, supercritical fluid (usually nitrogen or carbon dioxide, typical dosage is 0.

Due to the existence of the check valve and the closed nozzle, the homogeneous system can be maintained without segregation under high pressure, which is the condition for uniform nucleation

Microcellular foam injection molding technology and equipment will show the following development trends in the future

● Reduced equipment complexity

Many large injection molding equipment companies have begun to set foot in this market.

● Intelligent improvement

With the development of simulation software and artificial intelligence technology, a more intelligent and operation-friendly control system will be integrated into the microcellular foam injection molding machine

● Focus on the field of environmental protection

As a green plastic processing technology, microcellular foaming may be further combined with plastic recycling

● Focus on the field of functional materials

Focus on the field of functional materials

At present, almost all the leading manufacturers of microcellular foam injection molding equipment are foreign companies

The above results were published in "China Plastics" under the title "Technical Progress of Microcellular Foam Injection Molding Process and Its Equipment".