Many a time colour of plastic products changes with temperature, thus affecting the quality of products. There are many reasons that cause discolouration and fading. In this blog, we discuss the reasons why the colour of the plastic changes with temperature, shedding light on the importance of high-quality masterbatches.
3 Reasons for Colour Change of Plastic with Temperature
Molding of Plastic: Many times, a natural colour article turns yellowish post molding. When exposed to oxygen in the air during the process and usage, plastic can cause oxidative degradation at higher temperatures. The heating plate of the plastic molding equipment is in a heating state, which can cause the resin to oxidize and degrade at a higher temperature. Prolonged exposure to high temperatures during the molding film extrusion process, also known as ‘reflation ‘, can lead to degradation.
Low Heat Stability of Masterbatch: Masterbatches with low heat stability are not capable of withstanding higher processing or usage temperatures. It can cause the pigment to burn, and you don’t get the desired colour.
Poor Light Resistance: Lightfastness, measured on an 8-level system, refers to the plastic’s ability to maintain its color when exposed to sunlight. A higher level, such as 8, indicates excellent lightfastness, while a lower level, such as 1, suggests poor lightfastness. Plastic color can change and fade with a poor light resistance level, making it crucial to choose masterbatches with high lightfastness levels.
Buy High-Quality Masterbatches from PCPPL
Perfect Colourants & Plastics Pvt. Ltd is a leading masterbatch company in India. Our masterbatch is suitable for various processes like injection molding, sheet extrusion, blowing and casting.
4 Criteria You Need to Consider When Choosing the Right Masterbatch:
Quality: Masterbatch is an essential element in the production of plastic products. This is why you need to choose an experienced masterbatch manufacturer like PCPPL that guarantees quality.
Colour Consistency: Masterbatches play a pivotal role in imparting colour to plastic. We can create masterbatches of any colour you need. Our team have the experience to develop and re-develop the colour shade and intensity of the colour to maintain colour consistency throughout.
Heat Stability: As mentioned, heat resistance is important regarding temperature stability. Masterbatch with low heat stability cannot withstand exposure to higher temperatures.
Lightfastness & Weather Resistance: High lightfastness ensures colour consistency and durability, especially in coloured plastic products. Exposure to high UV rays can break down the chemical bonds of polymers and lead to degradation.
Conclusion
When it comes to maintaining the colour of your plastic products, the choice of masterbatch is paramount. It’s important to note that specific additives may be needed to achieve the desired properties in the end products. At PCPPL, we offer a wide range of additives masterbatch, including UV masterbatches, anti-statistic, biodegradable, laser marking and more, to cater to your specific needs. Call us today to discuss your needs.
Also Visit: Manufacturing Process of Masterbatch: How is Masterbatch Made?
