ATTENTION! From Aug. 31 - Sept. 4, Sensor Products Inc. has scheduled a week-long office closing.
Urgent orders will be shipped out, if arrangements are made ahead of time. All orders and inquires otherwise will be handled upon our reopening on Sept. 8.

Thermex® Tactile Surface Temperature Indicating Materials

Example of color enhanced image generated on Thermex® paper
Example of color enhanced image generated on Thermex® paper

Thermex - Request Sample

Thermex® is a unique temperature indicating material. As thin as a standard sheet of paper, Thermex® changes color to reveal relative temperature distribution between any two contacting surfaces. Upon exposure to temperature the Thermex® sheet instantaneously and permanently changes color. The intensity of that color is directly related to the temperature it was exposed to, allowing Thermex® to spot high or low temperature zones. Thermex® is inexpensive, precise and disposable.

Common Applications:

  • Form fill and seal machines
  • Ultrasonic welding
  • Lamination presses
  • Vacuum & Flat Web type machines

Temperature Range 200° F to 300° F (90° C to 149° C)
Dimensions 18 in x 13 in (45.7 cm x 30.5 cm)
Thickness 2 mil (0.05 mm)

Normal Minimum Heat Seal Temperature
Low Density Polyethylene 245° F (118° C)
High Density Polyethylene 285° F (141° C)
Polypropylene 350° F (177° C)
Ionomer (Surlyn) 220° F (104° C)
Ethylene Vinyl Acetate Copolymer (12%) 200° F (93° C)
Ethylene Vinyl Acetate Copolymer (18%) 170° F (77° C)

Company: Confidential

"The film helped me find the spot with the highest temperature between the two surfaces so I think it is safe to say that the product performed as expected."