Small and Medium Precision Medical Device Injection Molding Solution

Efficient molding of medical blood tube filter with FF series all-electric machine

Key words: stability precision electric injection molding medical devices

“The breakthroughs in material technology continuously refresh people’s understanding of plastic materials. The global medical plastics market is expected to reach a value of $336 billion by 2025.” ——Grand View Research

Today, plastics have demonstrated great market potentials in the field of disposable medical products, especially the small and medium-sized high precision plastic medical devices.  

At Chinaplas 2019, Yizumi’s all-electric injection molding machine displayed live production of 3cm medical blood tube filters. This product is one of the most important product categories of Guangdong Baihe Medical Technology Co., Ltd (Baihe Medical). The blood circuit during the hemodialysis treatment primarily replies on the extracorporeal circulation channel established. A small part in its venous circuit called filter must be able to effectively filter blood clots. As a result, there are very high precision requirements to the center hole position and the mesh grid size. However, the filtration mesh produced by the traditional hydraulic injection molding machine has been unsatisfactory with problems such as shrinkage, size deviation, or material shortage.

Thanks to its high precision and high stability performance, Yizumi’s FF series all-electric injection molding machine can easily tackle the problems and create a cost-efficient solution for customers.

High stability

—High rigidity integrated injection unit and linear guide mechanism (for injection units IU500 or below)

The integrated injection unit and linear guide mechanism can effectively reduce friction resistance and energy consumption during movement while allowing to forward and backward rapidly. As the precision and stability of plasticizing are improved, the repeatability of products is greatly improved.

High precision

—Central stress and lightweight design of movable platen

The mechanical structure of the movable platen is well designed to provide fast dry cycle time and high repetition precision of the mold-opening stop point. The platen parallelism can be maintained as low as 0.03mm, which is conducive to molding of high precision products.

—Unique Servo Direct Control technology

This is a processing algorithm embedded in servo driver developed independently by Yizumi R&D team. It almost completely eliminates the communication delay between the controller and driver, allowing faster feedback and control response. The control over the precise speed, position, and pressure can totally meet the molding requirements for high-precision products.

Dust-free operation+Intelligent manufacturing

In addition, Yizumi FF series all-electric injection molding machine adopts lubricating grease for fully automatic quantitative lubrication. The easy operation reduces the risk of manual maintenance and machine failure as well as satisfying the dust-free plant operating requirements in the medical device industry and keeping the environment clean.  

Moreover, in the new round of upgrading, the electric injection molding machine will help the medical device industry to achieve automated production. For example, the open external OPC ports on the FF series fulfill customers’ needs for networking and real-time monitoring of machine production data. Through micro adjustment, it can also enhance the product automatic sorting features to further improve productivity.

Application Example

Part: medical blood tube filter

Number of cavities:  8

Material: pp

Size: Φ 16mm, (H) 30.33mm

Weight: 0.64g *8

Cycle time: 10.9s

Partner: BAIHE MEDICAL

Customer profile:

Guangdong Baihe Medical Technology Co., Ltd., is a company specialized in the R&D, manufacturing, and sales of disposable medical devices. Its disposable products include the central venous catheter, hemodialysis catheter, needle-free connector, etc. The company’s products are exported to more than 40 countries and regions around the world.