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Tighter Tolerance Requirements Promote Micro Molding Technology Innovation

Release date:01 , Jan , 0001 Source:Mastars Pageviews:-
|CNC machining company |CNC machining services|Customized 3D Printing Service ?Materials research is still one of the most important tools for improving micro processes. At the microscopic level, the fluidity of materials is (in some cases) quite different from that of "regular" non-Newtonian fluids. These phenomena
How have advances in materials impacted microinjection molding technology?

|CNC machining company |CNC machining services|Customized 3D Printing Service
Materials research is still one of the most important tools for improving micro processes. At the microscopic level, the fluidity of materials is (in some cases) quite different from that of "regular" non-Newtonian fluids. These phenomena can cause second- and third-order effects that affect crystallinity or lead to the formation of defects. As the microscopic industry grows and is explored, we are able to use our knowledge of these trends to apply pattern recognition to materials science. With this growing database of micro-polymer behavior, we can predict previously enigmatic phenomena and avoid lengthy time-wasting and costly troubleshooting efforts.

Plastic_Injection_Moulding



A word about the challenges and complexities involved in microinjection mold design
Size and space constraints are usually the biggest challenges. These factors affect everything from gating, release, and sealing angles to release slope. The best way to overcome these challenges is to develop a very thorough manufacturing-oriented design process and try to make a split model of the solid mold every time, so that it is as realistic as possible to what you want to see inside.


Design for manufacturability is critical to micro-injection molding. How does it differ from traditional manufacturing-oriented design?

Manufacturing-oriented design for microinjection molding becomes more critical due to factors such as gating, demolding, and sealing angles. These important details need to be reviewed early in the process. In macro molding, this is less critical because we have several alternatives, whereas in micro molding there is very limited room for maneuvering. For example, there may be only one gate location for micro molding, while there may be three or four gate locations for macro molding. This phenomenon also exists for mold release and other factors. The correct manufacturing oriented design determines the ease of the mold design phase. The manufacturing oriented design process, whether radius or sharpness, tilt or non-tilt or ejector/splitter/gate placement, should put all challenges on the table that will help determine how the mold design is done. We may have envisioned how the design will proceed and can assume some give and take conditions, but what if the parting line we envision crosses a critical surface? We must adapt the mold design to ensure that the injection molded part delivered to the customer meets the product design intent. Another thing we must be aware of is the aspect ratio of the shell as it is tied to material selection. Is it possible to achieve the desired geometry by changing the material, or must the geometry be changed based on the material? For example, polyetheretherketone injection molding cannot achieve the length and fineness of polypropylene injection molding.




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