There are opportunities to restore or repair certain materials. For example, a welding machine can be used to create a perfectly tailored plastic bag and to repair certain plastic products. In this article we will explain how the welding machine works and the different steps of the permatex plastic welding process.

How does a permatex plastic sealer work?

The welding machine is a machine that works by default with a plastic sheath. The working method is also simple: adjust the thermostat to set the sealing time, insert your product into the liner, lower the preheated sealing arm to seal the liner like a bag, cut the remaining liner, raise the sealing arm. To find out more, have a peek here.

The different steps of permatex plastic welding

There are mainly three:
Heating: in the plastic welding process, it is essential to form a fusion layer at the contact surface to allow intermolecular diffusion , in order to form a bond at the molecular level. In the solid state, the polymer chains will not flow. The joint surface on both parts must therefore be melted to allow the plastic molecules to diffuse across the interface and bond to the molecules on the other part.
Force: A force is applied throughout the welding process. This force is used to conform the surface roughness to increase the contact between the parts at the parting line. The application of force improves the flow of melt across the interface and compresses the melt layers to promote intermolecular diffusion between the two parts.
Cooling: This step allows the polymer to recrystallize. For amorphous polymers, cooling allows the microstructure to solidify in the orientation created by the molten flow. Permatex is a material that forms a thick, durable bond with most plastics.

It is therefore important to follow these steps to succeed.