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Historical Review
Process Capabilities
Process Advantages
Part Design
Design vs. Material
Size Capabilities
Nominal Walls
Depth of Draw Ratio
Stretch Ratio
Corner Radii
Draft Angles
Stiffening Details
Holes
Trim Lines
Undercuts
Tolerances
As Formed Tolerances
Machining Tolerances
Texturing
Decorating
Cost Considerations
The Thermo Pressure Forming Process
Attributes vs. Processes
 
Size Capabilities  

The size of Thermo Pressure Formed parts is limited by the size of the thermoforming machines now in use and the size of plastic sheet stock which is available. Commercially available sheet stock is attainable in sizes of 120 inches wide and as long as required in thicknesses of up to .500 inches. Larger, thicker sheet stock is available in special cases.

To date, the largest commercially available Thermo Pressure Formed parts are in the size range of 48 inches long by 24 inches wide and 18 inches deep. However, the size capabilities of the process increase almost daily.


We can anticipate that the size of the parts will increase as the process becomes more widely used.

Once the decision has been made to produce a part by the Thermo Pressure Forming process and a specific material has been chosen, the designer must turn his attention to the special requirements of that process and that plastic material.