Injection molding is a key process in the plastic manufacturing industry, widely used for producing high volumes of consistent parts. However, one vital maintenance step is often overlooked—the use of Purging Compounds. Proper purging helps prevent contamination, reduce downtime, and ensure smooth transitions between colors and resins.
With the plastic manufacturing sector expanding rapidly across India, it’s important to understand the correct way to use Purging Material for Injection Molding machines to maintain optimal production efficiency.
Why Purging is Essential
Purging is the process of cleaning the barrel, screw, and other internal components of the injection molding machine using a specialized compound. It becomes necessary when:
- Changing from one resin or color to another
- Shutting down the machine
- Preparing the system for maintenance or a new production run
Neglecting purging can result in contamination, wasted material, poor product quality, and machine damage.
Selecting the Right Purging Compound
There are three main types of Purging Compounds available in the Indian market:
- Mechanical Purging – Uses a high-viscosity compound to physically scrub out residues
- Chemical Purging – Involves a chemical reaction that breaks down and dissolves leftover material
- Hybrid Purging – Combines mechanical and chemical actions for enhanced cleaning
The best choice depends on your machine, the type of resin used, and the degree of contamination. UNICLEANPLUS offers a variety of high-quality Purging Compounds tailored to suit different production needs. Request a free sample to determine the best solution for your facility.
Maintain the Right Temperature
For effective results, always purge the machine at the same temperature used during production. Operating outside the optimal temperature range can reduce the Purging Compound’s effectiveness. Refer to the Purging Material and resin manufacturer’s specifications to avoid inconsistent results.
Purging Process: Step-by-Step
- Stop feeding the current resin.
- Load the UNICLEANPLUS Purging Material into the hopper.
- Switch to manual mode and run short shots until only clean purge material is visible.
- Repeat the process until there is no trace of previous color or resin.
- If changing resins, feed a small amount of the new resin to clear out remaining purge residue.
Standardize and Document the Procedure
Inconsistent purging practices across different shifts or operators can impact productivity. To prevent this:
- Create a clear Standard Operating Procedure (SOP)
- Train all operators in correct purging techniques
- Maintain logs of purge frequency, materials used, and observed results
This will help you monitor performance, reduce waste, and prevent recurring issues.
Choose UNICLEANPLUS for Reliable Results
Using the Right Purging Material for Injection Molding is not just a maintenance step—it’s a cost-saving strategy. With UNICLEANPLUS, manufacturers benefit from:
- Faster changeovers
- Reduced material waste
- Improved product consistency
- Extended machine life
Take a proactive step toward better productivity and quality.
Call +91 9021232809 today to order or request your free sample from UNICLEANPLUS.
