Optical brightening for PVC
PVC is one of the most widely used plastics today. PVC (polyvinyl chloride) is hard and brittle without plasticizers. Various additives make it possible to vary the elasticity of the thermoplastic material. For example, PVC can be used for pipes, gutters, windows or casings, but also for garden hoses or floor coverings. PVC is an integral part of modern automotive engineering. It can be found, among other things, in truck tarpaulins, convertible rear windows or seat covers.
Not only the hardness of the plastic PVC can be easily changed, it also dyes well. Therefore, there is basically no PVC application in which optical brighteners cannot be used.
Optical brighters in Plastisols
Optical brighteners in plastisols
Plastisole is a dispersion of powdered thermoplastics and plasticizers. The most important representatives of this group are PVC plastisols, which are also known as soft PVC, hot-melt vinyl or other vinyl materials. We also find optical brighteners in almost all areas, where plastisols are used.
Plastisols are used as protective underbody panels in the automotive industry. In order to reduce the quantities added and to ensure optimum distribution of plastisols, optical brighteners are used as tracers.
Synthetic leather products are also made from plastisols. Modern artificial leather products can be easily dyed in a wide range of colours. Our optical brighteners improve the basic colour and increase the colour brilliance. To ensure that optical brighteners achieve their maximum effect, they must be completely distributed and “dissolved” in the final product. The requirements for the optical brighteners are versatile and way higher in plastisols than in the other PVC areas.
Depending on the application area and processing parameters, we can introduce the optical brighteners in different ways onto or into the final product. In these areas, we can dose the optical brighteners within 0.001 – 0.05%.
The fields of application as well as the application possibilities of PVC & plastisols are completely different and the sectors range from:
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- Improvement of the basic color
- Increase the degree of whiteness
- Increased color brilliance
- Cost savings