СATALOGUE / PHARMACEUTICAL PRODUCTION TECHNOLOGIES / BASICS OF PRESSING POWDER INTO TABLETS / Pressing stages for powdered materials

Pressing stages for powdered materials

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СATALOGUE / PHARMACEUTICAL PRODUCTION TECHNOLOGIES / BASICS OF PRESSING POWDER INTO TABLETS / Pressing stages for powdered materials

Pressing stages for powdered materials

The whole pressing process is proposed to be divided into three stages: compaction (underpressing); formation of a compact body; volumetric compression of the formed compact body. At the first stage of pressing under the influence of an external force there is convergence and compaction of material particles due to their displacement relative to each other and filling of voids. The forces overcome in this process are insignificant and compaction becomes noticeable already at low pressures. The applied energy is mainly used to overcome internal (between the particles) and external (between the particles and the matrix machines) friction.

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Information updated: 28 / 04 / 2026
Available for
Production: 1 year на оборудование для прессования порошкообразных материалов

Model: Pressing powdered materials

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In reality, there are no sharp boundaries between the three stages of pressing, as the processes occurring in the second stage take place in the first and third stages, and we can only speak about the predominant role of individual processes in each of the pressing stages. Studies have established that the nature of compaction of granules and powder particles during pressing depends on their strength. As mentioned in Sect. 4.4, tablets are produced by three methods: wet granulation, dry granulation and direct pressing.

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Articles — A genre of journalism in which the author sets the task of analyzing social situations, processes, phenomena, primarily from the point of view of the regularities underlying them.

Technical specifications

In the second stage of pressing, as the pressing pressure increases, the material is intensively compacted by filling the voids and various types of deformation, which contribute to a more compact packing of the material. The resulting deformations can be of the following types: deformation due to elasticity helps the particles to wedge into each other, which increases the contact surface; deformation due to plastic properties makes the particles change their shape and fit more tightly together; deformation determined by the brittleness of the material, characterized by the destruction of the pressed material, occurs only when the stresses occurring in the pressed material exceed the yield strength of the material.

Additional information

In this case there is a mechanical destruction of material particles into smaller ones, accompanied by a significant increase in surface energy, which creates conditions for the emergence of contacts between particles. At the second stage of pressing a compact porous body with sufficient mechanical strength is formed from the bulk material. At the third stage of pressing at high pressure values, when the mechanical strength of tablets changes insignificantly, there is possibly a volumetric compression of powder particles and granules without a noticeable increase in contact surfaces.

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Oliver
Hello, is it possible to buy your blistering machine for tablets and capsules MN-80 1 piece with delivery to Mesa ( Europe) ? How much time for delivery ? 04/05/2026 03:30

Roman Tsibulsky
Oliver, hello! We have many customers from your city. Delivery to this region is made by EMC. 04/05/2026 03:33

Elijah
Waiting for delivery to Tivat of a TR-02 hard gelatin capsule polishing machine. What about it? 04/05/2026 03:40

Roman Tsibulsky
Hello Elijah, on your order we inform you that tomorrow until 17:30 the driver will contact you to clarify the time and place of unloading. 04/05/2026 03:43

Mia
Have you received payment from our company ? When can we expect delivery ? Please specify realistic terms. 04/05/2026 03:50

Roman Tsibulsky
Good afternoon Mia, You paid a few hours ago. We told you that the delivery time is 30 to 45 days. tomorrow until 17:30 we will get a reply from the manufacturer on the final time frame. 04/05/2026 03:52

Evelyn
Horizontal granulator for organic fertilizers JU-80, the price is up to date ? Delivery time to Geneva? Urgent. 04/05/2026 04:00

Roman Tsibulsky
Evelyn, Please read carefully the description of this model in our catalog. Prices are current. Timing 1-1.5 months. 04/05/2026 04:03

Luna
To what address to send you samples of bottles and caps to send them to the factory ? Regards Luna. 04/05/2026 04:10

Roman Tsibulsky
Good day, Luna We received the same question on WhatsApp and replied there as well. Kindly provide the shipment number for tracking purposes. Thank you. 04/05/2026 04:14

Victoria
I would like to discuss the purchase of model FK-05 - capping and screw cap machine. 04/05/2026 04:20

Roman Tsibulsky
Good day. You can call on tel. +79853643808 or to the mail specified on the site. Victoria, this chat is only for tracking shipments. 04/05/2026 04:22

Aria
Dear Roman, how are you doing? Our company bought more than a year ago a filling and capping machine for penicillin vials, model XL-10. We got financing this year and want the same machine. Will you give us a discount? 04/05/2026 04:30

Roman Tsibulsky
Aria, thank you. We're doing great. Of course we will give a discount to the regular customer. Delivery of equipment also in Fresno ? Contact Natalia, she will send the contract and invoice. 04/05/2026 04:32

Daniel
Dear Roman, how are you doing? Our company bought more than a year ago a filling and capping machine for penicillin vials, model XL-10. We got financing this year and want the same machine. Will you give us a discount? 04/05/2026 04:40

Roman Tsibulsky
Daniel, thank you. We're doing great. Of course we will give a discount to the regular customer. Delivery of equipment also in Kansas City ? Contact Natalia, she will send the contract and invoice. 04/05/2026 04:43

Emily
Good afternoon, we received the PR-15 powder dispenser in plastic vials, scheduled In the afternoon to open the box and test. 04/05/2026 04:50

Roman Tsibulsky
Emily, good afternoon. Great news, please send a photo and video report to WhatsApp +79853643808. 04/05/2026 04:53

James
We have sent to info@minipress.ru photos of the damaged box with induction welding membrane machine FG-08. Please call back. 04/05/2026 05:00

Roman Tsibulsky
Good day, James! Damage to the packaging is unfortunately a common practice in transportation. Please carefully unpack the shipment and send us a series of photos. We will take a look and take action. 04/05/2026 05:01