Production of Heaters For Plastic Molding: Trust The Experts

Heaters for


Heaters for plastic molding


The plastic molding is a process that allows to realize plastic components through the use of a mold. Heaters for plastic molding are used to bring the molds to the suitable temperature for the process.

The main techniques of plastic molding are:

  • Compression Molding: Process of machining employed for thermosetting plastics, and sometimes also used for thermoplastics.
    During the process of compression molding the polymer, that at the beginning is in the form of powder or pellets, is subjected to high pressures, thus giving rise to the crosslinking process.
  • Injection molding: It’s the most used technique to produce in series plastic objects. Is realized through the use of special presses (said presses for thermoplastic injection), that, thanks to heaters for plastic molding, blend the granules of plastic material and inject them with high-speed and pressure into the molds. At this point the polymer cools and it assumes the desired geometry.
    The injection molding is used both in the case of thermoplastic materials both with the thermosets.
  • Transfer molding: The polymer, through heaters for plastic molding, is brought to a temperature that makes it malleable and at the same time that avoids the crosslinking. The latter will be carried out at a later time, in a closed mold in which the softened mass will be previously transferred.
  • Thermoforming
  • Heat Sealing
  • Rotomolding
  • Foaming
  • Pressing sintering

To discover all the heaters for plastic molding of MDR Marca visit the “Products” section of our website. For more information contact us.


MDR Marca has decades of experience in the production of components and heaters for thermoforming, guaranteeing its customers the best in terms of quality and reliability.

Among the techniques of warm plastic molding stands out the thermoforming process, that takes place starting from sheets or films of granules of polystyrene or polypropylene, which can be under pressure or under vacuum.
This technique is often used when the number of pieces to produce is low (manual thermoforming), when the number of pieces to produce is high and the delivery times are restricted, when a large production flexibility is required and when you have to produce pieces wit the thickness walls very thin.

The thermoforming process starts with films or slabs that are warmed up by the heaters for thermoforming. Then they are passed, at an appropriate temperature, through a mold in which the desired object is forged by the pressure of the compressed air or of the atmospheric air, through very economic production equipment.

Another technique often used is the forming by extrusion, during which the material is pushed through an opening by means of a screw. The final form of the polymer (that flows in a continuous way) depends on the geometry of the opening. This process is used especially for thermoplastic materials and sometimes for thermosetting materials and to produce, for example, plastic tubes.

Visit the “Products” of our website to discover all the components and heaters for thermoforming, and contact us to receive a custom quote..


MDR Marca has more than 10 years of experience in the field of plastics processing, especially producing heaters for plastic heat sealing.

The heat sealing process consists of the union of two flaps of plastic material, which will be heated and then joined together.

The processes of heat sealing may be divided into two main categories:

  • Heat sealing autogenous: the two edges of the joint are heated until it melts, thus joining the flaps with the material of the joint or with the aid of a filler material to it homogeneous;

  • Heterogeneous heat sealing or brazing: once heated, the joint below the melting temperature is melted with an heterogeneous filler material with a lower melting point.

The heat necessary to implement the process can be achieved with different systems, as for example through a flame produced by combustion of a gas with air or oxygen, through an electric arc which is formed between two electrodes, or through the use of heaters for plastic heat sealing.

Always engaged in the production and sale of a wide range of electric heaters, MDR Marca offers its customers components and heaters for plastic heat sealing that meet high standard of quality and safety.

Visit the “Products” of our website to discover all the components and heaters and contact us to receive a custom quote..