News & Events - Plastic Bending for Face Mask and Sneeze Guards - BriskHeat

Plastic Bending for Face Mask and Sneeze Guards

June 22, 2020 2:08:16 PM EDT by BriskHeat

2020 has been an interesting year to say the least. Now more than ever everyone is trying to find new ways to protect themselves, their families, and their customers. One of those new ways is making plastic face guards, and plastic sneeze guards.

With the right equipment you can quickly soften acrylic sheets for easy bending.  

BriskHeat RH plastic bending strip heaters are a flexible strip heater that provides a fast, easy, and cost effective way to bend, shape, or form acrylic and other thermoplastic sheet products. Using a BriskHeat bending strip heater as a heating element you can quickly build a plastic line bending tool for safe, reliable, and efficient bends. Below are directions that can help you make these products:

  1. Cut a piece of 1/2” Plywood 
  2. Cut two 1/4” Plywood Strip
    Center the two strips (2) on top of the base (1) leaving a 3/4” channel down the center and nail to the base.
  3. Cut two pieces of heavy-duty aluminum foil (Refer to chart below) and fold to fit in the 3/4” channel
  4. Attach a ground wire to the aluminum foil with a screw as shown.
    Note: The ground wire should be long enough to attach to a common ground such as the corner plate screw on an electrical outlet.
  5. For insulation, use fiberglass cloth (Refer to chart below) and fold to fit in the 3/4” channel on top of the aluminum foil.
  6. Staple fiberglass cloth and aluminum foil to 1/4” plywood strips (2) along the outside edges.
  7. Tape edge of fiberglass cloth and foil down to sides of wood to prevent fraying of edges.
  8. Lay the BriskHeat Strip Heater Element in the channel.
  9. Drive a nail 11 1/2” from each end of the base along a center line and tie end strings of the heating element to the nails.
  10. Attach ground wire to common ground
  11. Plug the strip heater into 110V outlet.

Acrylic sheet may be formed along a straight line by strip heating. Remove protective masking paper. Place acrylic sheet on the supporting frame with the area to be formed directly above the heating element—do not let the sheet touch the heating element. The material could not be heated to a temperature higher than 340°F. Surface overheating will cause scorching and bubbling; if this occurs, increase the distance between the heating element and the sheet. Allow the material to heat thoroughly (until it softens or welt in the area to be formed). Bend gently to the desired angle, keeping heated side of the material on the outside of the bend, and hold firmly until cool.