what is flash
Flash, also known as burrs or flashing, in injection molding refers to the excess material that appears at the parting line or opening of the mold. This occurs when the molten plastic flows into the gaps between the mold halves due to improper clamp ing, wear, or misalignment of the mold, resulting in thin, unwanted protrusions on the finished part.
In the injection molding process, flash not only affects the appearance of the product but also its functionality and precision. Flash can cause uneven edges on the product, requiring additional trimming and processing, which increases production costs and time. Furthermore, flash may impact the assembly and usage of the product, reducing overall quality and customer satisfaction.
1.Mold Design Defects: Poor mold design or insufficient manufacturing precision can lead to gaps in the parting line of the mold.
2.Excessive Injection Pressure: High injection pressure can cause the molten plastic to overfill the mold and spill out from the parting line.
3.Mold Wear: Prolonged use of molds can cause wear and tear, resulting in the parting line no longer fitting tightly.
4.High Material Flowability: Certain plastic materials have high flowability, making them more likely to escape through mold gaps under high pressure. Insufficient Clamping Force: If the injection molding machine's clamping force is inadequate, it cannot fully close the mold, allowing molten plastic to escape.
Our Experienced & Professional Solutions
At Ruicheng, we understand that the occurrence of flash during the injection molding of TPU products can significantly impact both the functionality and aesthetics of your final products. Through extensive testing and leveraging our vast experience, we have developed effective solutions to address these challenges. Here are our proven strategies to tackle flash issues in TPU products:
1.Optimized Processing Parameters:
Our expert team has discovered that excessive pressure and temperature can cause TPU to overflow, leading to flash. By carefully adjusting the injection molding machine's temperature, reducing the injection speed, and lowering the injection pressure, we effectively minimize the occurrence of flash. This precision adjustment ensures your products are molded to perfection, without unwanted excess material.
2.Advanced Mold Design:
Flash often arises from design and structural defects in the mold, creating gaps that allow TPU to seep through during injection. Our seasoned engineers focus on enhancing mold structure and design precision. By refining the mold's design and ensuring a perfect fit, we significantly reduce the likelihood of flash. Our advanced mold design techniques guarantee that your products are not only high-quality but also aesthetically pleasing.
3.Precision Machinery:
While some suppliers struggle with flash issues due to inadequate machinery, Ruicheng excels by using advanced CNC, EDM, and WEDM equipment. These precision tools enable us to manufacture molds with superior accuracy and fine details, effectively eliminating gaps that cause flash. Our high-precision equipment ensures that the molds we produce are not only highly accurate but also beautifully crafted, providing a flawless solution to flash problems.
With our state-of-the-art equipment and dedicated team, Ruicheng offers reliable and high-performance solutions to eliminate flash and improve the overall quality of your TPU products.
Contact us
For more information or to discuss your project needs, please contact us at:
Email: marketing@chinaruicheng.com
Phone: +86 15980769781
WhatsApp: +86 15980769781
Website: https://plasticxperts.com/
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