Particle size distribution, color enhancement and uniformity are critical for cosmetic powders and one of the most common techniques used to achieve it is micronization through jet milling.

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Micronization is one of the most utilized solutions for cosmetic particle size reduction distribution. We use tailored solutions with specific machinery that helps with engineering the particle size of the molecule for omogeinity of cosmetic formulations, making the pigments much brighter with richer color and silky textures.

It is a process that requires a pressurized gas (e.g. compressed air or nitrogen) in order to collide particles against each other. The performances of the machine strongly vary according to powder properties (flowability, strength, etc.) and it is therefore necessary to be able to adapt the process to each product’s characteristics.

We take this one step further with our personalized micronization which implies the possibility to completely tailor the process according to powder properties.

Schedio Personalized Micronization™ introduces a multitude of parameters, which customers are supported to master in order to meet the expected quality and productivity goals. The new parameters used for jet milling help solve or ameliorate the challenges faced during micronization.

We have two types of jet mills that serve all your micronization needs.During micronization you could have problems with flammable machines, so the machines need to be washed out and cleaned. We have developed solutions for de-clogging the machines during the process to help collect 98% of product, while only washing 10% of the machine, allowing for faster turnover between products.

Spiral jet mill

No mechanical moving parts within the mill, along with ease of dismantling, makes this machine the most flexible unit as a multi-product plant for ultra-fine particle size reduction. The spiral jet mill also uses ambient temperatures for pigment heating, which helps with color improvement and brightness of the powder. It helps to remove stickiness of the particles.

The design of a milling chamber, independent from the jet mill body, makes the micronization possible and easy to be customized each time on the product.

The final particle size distribution is mainly determined by a combination of:

  • Inlet flow of powder
  • Gas pressure / consumption

To see the full process of the Dynamic Classifier read more on our Knowledge Center. 

Opposite jet mill

Similar to the spiral jet mill, this machine is designed to micronize dry powder and reduce the particle size to a distribution below 10 microns, depending on the final necessity of the end user. The big advantage of using the opposite jet mill for cosmetic products is that it helps with the challenges of having inconsistent raw material…it will resolve issues of supply chain because it comes out micronized with the particle size that you want for the final product.

The micronization happens through frontal collision of dry particles, accelerated by pressurized process gas. The high automation level of the opposite jet mill makes it a perfect product dedicated unit, and continuous micronization with limited human intervention. Different from the spiral jet mill, the rotating classifier of the opposite jet mill allows a precise selection of the final particle size distribution, whatever the inlet particle size.

The final particle size distribution is determined by a combination of the following parameters:

  • Gas pressure / consumption
  • Classifier rotation speed
  • Air barrier pressure

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Technical Info

nominal productivity (Kg/h) 0,05 min - 1 max 0,25 min- 1 max 0,5 min - 5 max
nominal productivity (Kg/h) 1 min - 30 max 5 min - 100 max 5 min - 100 max
nominal productivity (Kg/h) 5 min - 30 max 10 min - 500 max 15 min - 700 max 5 min - 100 max 8 min - 300 max
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