Pressing
Pressing, compacting and forming are essential processes in industry and the craft trades, using manual, pneumatic or hydropneumatic presses to manipulate a variety of materials. These techniques enable powders to be given a uniform shape, springs to be compressed or soap to be molded, for example.
Thanks to their advanced technology, EMG presses provide precise pressure for a variety of applications, from the laboratory to industrial production. Discover how these machines efficiently transform materials into high-precision finished products.
What is pressing and compacting a powder?
Pressing consists of compressing one or more elements together, in the same way as gluing several parts together, with or without maintaining compression over a given period of time. Pressing can also be used to modify the elastic potential energy of a system in order to make assemblies under stress, such as compressing a spring in a specific assembly.
Pressing can also be used to create a defined shape (using a mould) by compressing a specific set of materials (organic, mineral, etc.) with sufficient power. This type of use comes into play for applications such as shaping soaps, medicinal tablets, clay or ceramic buttons for decoration, quicklime or sawdust, for example.
Pressing can also be used to compact elements (e.g. compacting powder, shavings, etc.).
Forming and moulding a material using a press
Cold forming or moulding of a material is a process in which the material takes on a new shape using moulds. Manual, pneumatic and hydropneumatic presses can be used to form materials. This process is often used to press soft materials, such as powders, powders or fibres.
A wide variety of parts can be manufactured using this process. While a manual press can be used to produce small runs of compressed powders, a pneumatic or hydropneumatic press can be used by laboratories to produce large runs. Also, in the medical and orthopaedic fields, foams can be compressed to make insoles and protectors for equipment.
Stages in the pressing/moulding process
Whether the process uses a manual, pneumatic or hydropneumatic press, the four main stages are the same:
- Placing the material: The material to be pressed (powder, paste, powders, etc.) is placed in a mould or on a die,
- Activating the press: The user activates the press using a lever or a control, generating direct pressure on the material. The pressure generated depends on the machine used,
- Product formation: Under pressure, the material is compacted, formed or moulded to adopt the desired shape and size.
- Removing the product: Once pressing is complete, the finished product is removed from the mould.
EMG compression presses: manual, pneumatic and hydropneumatic for high output
EMG presses are distinguished by their ability to offer high output thanks to manual, pneumatic and hydropneumatic technologies. They are designed to meet both industrial and craft needs. Each type of press offers specific advantages, guaranteeing efficient and precise production, adapted to each application for pressing as well as stamping, riveting, bending or cutting.
To help you choose the press you need for your application, we suggest you use our technical and testing centre to produce samples. Our experts will analyse your needs and then take samples to determine the precise machine that's right for you.