How to Properly Use Purging Material in Injection Molding Machines

1. How to Correctly Use Purging Material for Injection Molding Machines

2. A popularly used process for mass production in the Plastic Manufacturing Industry is Injection Molding. We generally overlook a step that can maintain the efficient operation, and that is the use of Purging Compounds. If we purge properly, it will help to prevent contamination, reduce downtime and make certain that there is a smooth transition between materials and colors. As this is a growing industrial sector in India, it is wise to know the proper use of Purging Material for Injection Molding Machines. Understand the Need for Purging The process that helps to clean the barrels, screws and other parts of the Injection Molding Machine is Purging. In this process, a specific Purging Material is used. It is necessary to undertake this process when there is a change in resins or colors. It is also necessary to purge once before shutting down the machine. If this process is not undertaken, the contaminants can damage the new batches, and it will not be possible to process the products. Choose the Right Purging Compound There are several types of Purging Compounds available in the Indian market—mechanical, chemical, and hybrid. The right one depends on your machine, the type of resin you use, and the nature of the contamination. For example, Mechanical Purging uses the scrubbing action of a high-viscosity resin, while chemical purging involves reactions that break down residue inside the barrel. It is important to consult with your material supplier or use free samples of Purging Compound to select the most suitable type for your specific requirements.

3. Purge at the Correct Operating Temperature The Purging Process should be performed at the same temperature as the production resin. Heating the machine to a higher or lower temperature can reduce the effectiveness of the purge. Always maintain recommended temperatures based on the last material processed and the Purging Compound’s specifications. Follow the Correct Procedure To purge properly: Stop the feed of the current resin. Feed the Purging Material into the hopper. Run the machine in manual mode, injecting short shots until clean purge material exits the nozzle. Repeat the process until there is no visible contamination or colour from the previous run. If switching to a new resin, follow up with a small amount of the new resin to flush out any remaining purge compound.

4. Document and Standardise In many Indian manufacturing units, inconsistency in purging practices can lead to inefficiency. Establish a standard operating procedure (SOP) for purging and train machine operators to follow it strictly. Keeping records of purging intervals, materials used, and results can help track performance and identify recurring issues. Proper use of Purging Compound from UNICLEAN PLUS in Injection Molding Machines is not just good housekeeping—it’s a smart business practice. It leads to better machine longevity, fewer defects, and more efficient production—key benefits for any manufacturer operating in India’s competitive plastic industry. Call +91 9021232809 to place your order or request free samples. To Read Our Published Blog: https://purgingmaterial.blogspot.com/2025/07/how-to-efficiently-use-purging-material-for-injection-molding-machines.html https://unicleanplus.mystrikingly.com/blog/best-practices-for-using-purging-material-for-injection-molding-machines https://unicleanplus.weebly.com/blog/how-to-properly-use-purging-compound-in-injection-molding-machines https://unicleanplus.livepositively.com/how-to-effectively-use-purging-compounds-for-injection-molding-machines/ Thank You!

5. UNICLEANPLUS™ Address : BharatipolychemPvt Ltd, Plot No-451 City: Lesliganj State: Jharkhand Zip: 822118 Country: India Phone: +91 9021232809 Email: sales@bharatipolychem.com Website: https://www.unicleanplus.com/contact/