Thursday, January 28, 2010

Twin Sheet Thermoforming - Advantages and Features

Twin Sheet Thermoformed parts/product are made by very few thermoformers. Spencer Industries is one of the few that Specializes in this skill. When using the Twin Sheet Thermoforming method there are many unique advantages that allows the engineer to think "outside the box."  Using the Twin Sheet Method can also be a huge cost savings!


Twin Sheet Thermoforming is accomplished by heating two extruded plastic sheets simultaneously and then forming and sealing or fusing these two sheets together during the thermoforming process. In many cases, the twin-sheeting process produces parts that can resemble a blow-molded or rotational molded product, but with several advantages.


Advantages of Twin Sheet Thermoforming
  • A two-color product option  
  • Ability to have 2 different material thicknesses
  • A higher esthetic product because of complete tool contact of both exterior sheets
  • A hollow product with a separate component trapped inside the two sheets as the part is being twin sheet thermoformed.
  • Allows a parting line that varies in locations around the perimeter of the two halves
  • Increased Structural Integrity and helps Rigidify otherwise weak areas
  • Multiple Materials that we commonly Twin Sheet Thermoform - HIPS, ABS, TPO, HDPE, PP, TPU, & PETG  
  • Size capabilities range from as small as 8" x 8" to as large as 7' x 11' x 36" Depth
Features of Twin Sheet Thermoforming
  • Hollow Formed Parts
  • Two Color Part Option
  • Foam Filled
  • Living Hinge Capabilities
  • Custom Color Layering
  • Variable Wall Thickness
  • Multi Textures
  • Air and Wiring Ducting