微发泡注塑成型技术 Microfoam injection molding technology

微发泡注塑是当下高速发展的新型注塑技术，该技术从微观上解决了塑料材料的内应力收缩，改善了塑料产品的翘曲变形，大幅度提高了功能型塑料制品的性能，同时还节省了大量塑料原料。

Microfoamed injection molding is a new injection molding technology with rapid development in this year. This technology  solves the internal stress shrinkage of plastic materials from the micro level,  improves the warping deformation of plastic products, greatly improves the performance of functional plastic products,  and saves a lot of plastic raw materials.

微发泡注塑成型是通过向熔融状态树脂中扩散混入超临界N2或CO2形成均相，之后在低压填充过程中，由于压力变化导致超临界流体成核发泡形成微细气泡孔，最终冷却形成稳定的物理发泡结构制品的高新技术。

Microfoam injection molding is a high-tech product that diffuses supercritical N2 or CO2 into the molten resin to form a homogeneous phase, and then in the process of filling at low pressure, the change of pressure leads to the nucleation of supercritical fluid bubbles to form micro bubble holes, and finally cools to form stable physical foam structure products.

微发泡注塑成型原理

Principles of microfoaming injection molding

微发泡注塑是近年内高速发展的新型注塑技术，该技术从微观上解决了塑料材料的内应力收缩，改善了塑料产品的翘曲变形，大幅度提高了功能型塑料制品的性能，同时还节省了大量塑料原料。

Microfoam injection molding is a new injection molding technology that has developed rapidly in recent years. This technology solves the internal stress shrinkage of plastic materials from the micro level, improves the warping deformation of plastic products, greatly improves the performance of functional plastic products, and saves a lot of plastic raw materials.

微发泡注塑成型是将气体(N2或CO2) 加压至超临界状态后注入料管熔胶中，透过螺杆将两者混练成单相流体。超临界流体在注塑过程中因瞬间压降造成热力学不平衡，使得流体进入模穴后气体得以从熔胶当中扩散成核，并长成均匀微细气泡。含有微细气泡的熔胶经模具冷却固化得到如蜂巢般的内部构造成品。

Microfoam injection molding is to pressurize the gas (N2 or CO2) to a supercritical state and inject it into the material tube melt, and mix the two into a single-phase fluid through a screw. In the process of injection molding, the thermodynamic imbalance is caused by the instantaneous pressure drop of the supercritical fluid, so that the gas can be diffused and nucleated from the molten glue after the fluid enters the mold hole, and grow into uniform fine bubbles. The molten glue containing fine bubbles is cooled and solidified by the mold to obtain a finished product with an internal structure like honeycomb.

微发泡注塑成型技术凭借其完美的尺寸精度控制，蜂窝微孔的内部结构，正逐步应用于汽车、电子、生活消费品等塑料制品的生产，是未来最具有市场价值的前沿技术。

Micro-foam injection molding technology with its perfect dimensional precision control, the internal structure of honeycomb micropores, is gradually applied to the production of automobiles, electronics, consumer goods and other plastic products, is the most valuable market frontier technology in the future.