Profile extrusion is one of several continuous manufacturing process methods employed to give form to thermoplastic materials. In the extrusion process a dry thermoplastic compound is first loaded into the material hopper.  The thermoplastic compound, usually in the form of a pellet or powder, is gravity fed into the extrusion machine barrel where heat is applied that changes the dry pellet or powder compound into a homogenous melt.  The melt is advanced forward in the extrusion machine barrel by a continuously revolving screw inside the extruder barrel. At the end of the extrusion barrel, the melt enters the back of a die fabricated with the desired profile shape.  When the melt exits the die, it is pulled from the die with a conveyor like puller.  In the process of pulling the melt out of the die the shape formed by the die is introduced into the cooling zone.  Within the cooling zone the custom profile is fed through sizing fixtures which generally employ vacuum to cool and size the profile and a temperature controlled water bath.    The custom profile extrusion continues to cool as it travels down line from the cooling zone until the continuous profile is cut to length at the end of the line with a saw or cut off die. 

Various appearance characteristics can be introduced into the custom profile extrusion with the addition of custom color concentrates, surface texturing and decorative film lamination.  Co-extrusion of dissimilar materials in one profile can increase the functionality of the custom profile extrusion. The continuous nature of the extrusion process facilitates multiple part production from one generic custom profile extrusion design.  Contact us if you have more specific questions concerning the custom plastic profile extrusion process. 

soma without prescription delivery viagra dose propecia 5mg sildenafil 100 mg