Improve Injection Molding Part Weight Stability with Plastrol
ELK GROVE VILLAGE, IL, March 2, 2022 - Many manufacturers are facing increased supply chain hiccups, especially when it comes to resin. Pair that with increases in demand for everything from medical devices to semiconductor components and this leaves little room for error in injection molding.
With so many variables in play during the injection molding process it can be complex and oftentimes tasks fall through the cracks, no matter how obvious. One of the most common is part weight variations which can occur due to inconsistent check ring response. When stabilized this can greatly improve shot-to-shot repeatability. Luckily, with the right machinery and technology in use, preventative measures can be taken and the process optimized.
Shibaura Machine’s V70 controller includes the Plastrol function which offers the user control of the screw’s operation after charging completes. Utilizing one of four operation types, or combining them together, the user can stabilize the shot size and optimize the check ring response of the screw tip. Being able to ensure part weight and filling pressure is stable can be a game changer for repeatability, especially when molding critical parts.
Understanding Plastrol Operation Types
Using one or a combination of the Plastrol operations mentioned below, the user can ensure better shot weight repeatability and consistency in part production.
- PRE-INJECTION AFTER CHARGE
By injecting resin at a lower pressure after charging it will allow the auxiliary compression of the resin and better regulate its density. Decompression begins from the position where the PRE-INJECTION AFTER CHARGE is completed and the injection speed shift and final packing control positions are automatically corrected. This process improves stabilization of the shot size.
- SCREW INVERSION IN DECOMPRESSION
This operation allows for advancing of the screw after decompression and will close the check ring to stabilize it.
- PRE-INJECTION AFTER DECOMPRESSION
This function reverses the screw operation before starting injection. It will lower the resin pressure between the check ring and spacer, also speeding up check ring response and stabilizing it.
- SCREW INVERSION BEFORE INJECTION
This operation will reverse the screw after decompression is complete and close the check ring for stabilization.
Shibaura Machine’s Plastrol function on the V70 Controller brings a user-friendly way to ensure unwanted fluctuations that can upset a stable injection molding process.
Contact the Injection Molding team to learn about the SXIII series machines and how the Plastrol function can help improve shot-to-shot repeatability.
Tel: (888) 593-1616
Contact us today to learn how Plastrol can help improve your molding process!
Related Articles View All Articles
Minimize Your Footprint and Bring Precise Control with Hot Runner Integration
ELK GROVE VILLAGE, IL, February 23, 2022 - Hot runner technology has revolutionized the injection molding process since it was introduced over 50 years ago. With it, manufacturers have seen improved molded part quality, operational efficiency, and reduced ...Read more
Monitor Injection Molding Energy Consumption Easily on the SXIII Series
ELK GROVE VILLAGE, IL, February 16, 2022 - Plastic injection molding machine drive technology has evolved dramatically over the decades. One of the most significant changes is the all-electric servo drive design in comparison to traditional hydraulic machi...Read more
Reduce Cooling Water Load with All-Electric Machines
ELK GROVE VILLAGE, IL, February 2, 2022 - Water cooling systems have long been used in hydraulic injection molding machines in order to keep the machine running smoothly. But imagine being able to reduce cooling water load requirements- it will allow you t...Read more
Improving OEE with All-Electric Machines
ELK GROVE VILLAGE, IL, January 31, 2022 - Stops in production, whether planned or not, create Availability Loss on the factory floor. While it isn’t always possible to eliminate changeover time, being able to significantly reduce it along with unplanned do...Read more
Why Repeatability and All-Electric Molding Machines Go Hand in Hand
ELK GROVE VILLAGE, IL, January 23, 2022 - Repeatability in injection molding. Being able to offer this shot after shot means lower cost of operation and consistency. It is key to the production of parts in today’s competitive market and has a crucial influ...Read more
Looking to Reduce Scrap? Why All-Electric Injection Molding Machines Are the Clear Choice
ELK GROVE VILLAGE, IL, January 12, 2022 - Improving scrap rates in injection molding can have a large impact on increasing profitability. While there are many process improvements for scrap rate reduction, it is also important to consider the type of machi...Read more