How to improve the quality of PP recycled materials by adding Optical brighteners?

2021-03-19 08:14:04

PP plastic particles are also called polypropylene, which is another excellent resin species after nylon. It is a high-density, high-crystalline linear polymer with excellent comprehensive properties. When it is not colored, it is white and translucent, which is better than polyethylene, and has better transparency and rigidity than polyethylene. Polypropylene has a wide range of applications in daily life.


PP plastic particles are also called polypropylene, which is another excellent resin species after nylon. It is a high-density, high-crystalline linear polymer with excellent comprehensive properties. When it is not colored, it is white and translucent, which is better than polyethylene, and has better transparency and rigidity than polyethylene. Polypropylene has a wide range of applications in daily life.


It is precisely because of its wide application in daily life that there are a lot of recycled materials, repeated reuse, and energy saving, which are also vigorously advocated by the country. Because of the complexity of recycling, the quality of PP recycled materials is unstable, there are many impurities, generally not white, and the color depth also troubles PP recycled materials recycling and remanufacturers. In fact, these problems can be satisfactorily achieved by adding corresponding plastic additives.


For products that are not white, yellowish, and have mixed colors. Raytop recommends that you add optical brightener. Firstly, the recycled PP plastic is crushed and washed, and the remaining water is dried in a spin dryer, and then dried and bagged. Add the fluorescent whitening agent and other additives to the mixer and mix them evenly. Add about 300 to 500 grams of special fluorescent whitening agent to one ton of PP recycled material. The specific amount of addition depends on the quality of the PP recycled plastic. , The better the quality, the less the amount added, and it will not greatly increase the cost of the manufacturer.


Raytopd's optical brightener OB-1 is of national standard quality. A small amount of addition can improve the whiteness of the product, and the crystal fullness of the whitening particles will help you enhance your market competitiveness. 

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