How to Avoid Odors During Injection Molding - A Constant Eye on Quality

2025,12,22

How to Avoid Odor Generation in Injection Molding - A Constant Eye on Quality

Many injection molded products produce unpleasant odors during processing, which can be uncomfortable for users. So how can this be avoided during the injection molding process? Jinan Tongkang Mold Factory is here to help.

1. Strictly Control the Use of Additives

Tertiary amine catalysts used in the production of polyurethane foam often result in a very strong odor. Instead of using polyols, which can cause moisture in car windows, we can use polyols whose composition not only forms the polyurethane molecular chain but also possesses catalytic activity. Some polyols can even replace half of the tertiary amine catalyst, thus eliminating the odor in the injection molded products.

2. Use More Pure Resins

Many plastics, especially polyvinyl chloride, styrene, ethyl acetate, acrylates, and other residual trace monomers, produce odors. Using very few monomer residues can help eliminate odors; the best option is to use odorless resins.

3. Pay Attention to the Use of Adsorbents

Adding a small amount of zeolite to the polymer can remove odors. Zeolite crystals have many pores, which can trap small molecules like gases.

A Continuous Focus on Quality

Manufacturing high-quality products begins with specially designed equipment and processes to maintain strict parameters. To gain a comprehensive understanding of quality, we utilize a wide variety of gauges, calipers, profilometers, spectrophotometers, coordinate measuring machines (CMM), statistical process control (SPC), first article inspection (FAI), and 3D laser scanning equipment. Our factory is also RoHS compliant.

Our quality engineers implement a rigorous Advanced Product Quality Planning (APQP) process involving cross-functional teams. However, at Viking Plastics, quality is the responsibility of every member of our team.

Our Production Part Approval Process (PPAP) is critical. Quality engineers work with quality technicians and inspectors to validate new products, investigate opportunities for improvement, and diagnose other potential product issues.

Talk to us! Put us to the test!

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Author:

Mr. Kama Liu

E-mail:

sale@hwplasticparts.com

Phone/WhatsApp:

+86 15069372818