An ointment mill utilizes high shear force to reduce particle sizes, disperse agglomerates, and homogenize viscous materials. Shear force is created by three horizontally positioned rollers rotating in opposite directions and at different speeds relative to each other. The whole product is pulled through the gap between the rollers, resulting in a precise, controllable, and narrow particle size distribution. The particle size can be easily and precisely controlled by adjusting the gap widths.
Step by Step Process:
The premixed product is placed in the hopper.
The product is drawn between the feeding and center rollers and finely ground.
Adhering to the bottom of the center roller the product is transported to the gap between the middle and front roller.
In this gap, the product is homogenized and ground for the second time.
The finished product is removed from the front roller by the scraper system.
Substance processed with convention mixing procedure: crystalline substances are still clearly visible.
Substance processed with an EXAKT three roll mill: regular and fine consistency of the substance.
Processing bone and bone/soft tissue samples with a butcher’s saw produces poor results and handling is extremely dangerous.
Even small diamond saws create artifact and limit the size of a sample that can be grossed. And neither can easily handle the surprise of an implanted device.
The EXAKT Pathology Saw provides quick, precise sectioning of the sample. It delivers debris-free, undamaged surfaces for Surgical Pathology and cassette-size samples to enhance tissue processing for histology. It combines the highest level of safety with equally high-quality results.
The EXAKT 50 I Three Roll Mill is an especially compact, versatile and easy-to-operate unit for applications where excellent dispersing is essential.
Working with separate roller sets is particularly effective in regard to fast cleaning, the avoidance of cross-contamination and downtimes due to changing the product. The special properties and functionalities make the EXAKT 50 indispensable for research, development and training.
› Roller gap to 10 μm
› Precise setting of the roller gap, no dry running possible
› Up to 5 l/h throughput with a gap width of 10 μm
› Continuously adjustable circumferential speed of the rollers
› Interchangeable roller set
› Ceramic or hardened chrome rollers
› Precise one-hand adjustment, continuous and with scale
› Self-adjusting scraper knife
› Overload protection
EXAKT Cutting and Grinding devices don’t cut with a sharp sawtooth blade, but cut and grind with minimal thermal and mechanical stress on the sample. The EXAKT CP (Contact Point) process ensures pinpoint application of energy. Even in complex components with materials of different hardnesses, the cut is guided precisely while the sample surface quality is left unimpaired.
EXAKT Cutting and Grinding Technology enables you to approach sample examination in ways which simply weren’t possible for your application until now. Long service life, reliability, and minimal service expenditure also contribute considerably to the economical use of our systems.
› Almost no burring, fraying or tearing out on the cut surface
› Safe operation – Minimal risk of the operator being cut
› Coplanar cuts with very tight tolerances
› Flexible and very precise alignment of the samples
› Cutting process for a wide variety of different materials, composites and components
› A variety of options for sample support
Don’t take chances when handling rare or unique samples. Mistakes in the preparation process delay your work and can provide false results. That’s a risk you shouldn’t take. Trust the decades of experience with globally tried-and-tested thin section cutting technology from EXAKT. We guide you through the sample preparation process, which helps your unique research results.
The EXAKT 312 Diamond Band Saw was developed to meet the special requirements of pathology and anatomy (human and
veterinary) medicine. With the EXAKT 312, even the smallest cuts down to about 1 mm can be made freehand with almost no risk of cuts to the operator. Whether it’s soft tissue, bones or implants in the bone-tissue composite, it can all be cut effortlessly and quickly. Not
only this, but it does it with a cut surface quality surpassing every other process available. An initial assessment of the cut can generally be made right away. Outfitted with a variety of different options, the EXAKT 312 can be adapted to individual handling and operating comfort needs.
The EXAKT 312 is very easy to operate and clean. Band changes can be made without tools or adjustment. The stainless-steel housing is consistently designed for good water and tissue drainage. For thorough cleaning and disinfection, modules can be quickly removed without the use of tools.
The EXAKT 312 Diamond Band Saw doesn’t cut, it grinds very precisely. This is the reason for the outstanding surface quality
of the cut surface. Complete preservation of the sample with a surface free of artifacts, micro-fractures and breakouts enables
immediate inspection and assessment of the sample. Even the cell information of very different tissue densities remains
intact. Since the cutting band grinds rather than cuts, there is no immediate risk of injury to the operator in case of inadvertent
contact, which is a first in work safety! Tricky samples with implants, in particular, can be precisely
and safely processed. Guiding the cut is easy and precise, and the process is clean and quiet. Water cooling also reduces dust
development and ensures that the sample doesn’t overheat.
› Superior cut surface quality
› Maximum working safety enables cuts down to 1 mm
› Integrated water cooling prevents overheating of the sample, reduces dust development and keeps the cutting band cleaner
› Cutting band changed without tools or readjustment
› Fast and easy cleaning through the tool-less removal of contaminated modules
› Reliable and time-tested – Hundreds of systems are already in use around the world
Cosmetic Manufactures Use EXAKT Three Roll Mills For Brilliant Colors
When it comes to color brilliance, color effects and high color intensity, EXAKT Three Roll Mills offer significant advantages. For example, the primary particles are not damaged during the processing of metallic and effect pigments. Optimal process control and reproducible quality are a matter of course with EXAKT Three Roll Mills. They satisfy the strictest guidelines for quality assurance and are therefore GMP and ISO auditable. Major companies and brands benefit from EXAKT Three Roll Mills in the production of lipsticks, eyeliners, foundations and nail polishes.