Canadian Packaging

Sensor film allows for better heat sealing technology

Because thermal management is crucial for proper heat sealing of packaging, Sensor Products Inc. of Madison, NJ, is offering Thermex temperature distribution film.


January 27, 2011
by Canadian Packaging Staff

Because thermal management is crucial for proper heat sealing of packaging, Sensor Products Inc. of Madison, NJ, is offering Thermex temperature distribution film.

Thermex is an economical thin sensor material that can be used in heat sealing and ultrasonic welding of packaging to quickly diagnose the temperature at the interface of heated contacting platens or rollers. Temperatures ranging from 200° to 300°F (93° to 149°C) fall within Thermex’s range.

Traditional methods of thermal management do not necessarily reveal that uniform temperature distribution at the interface of the heat seal has been achieved. Upon exposure to heat, Thermex changes color instantaneously and permanently to reveal temperature distribution between any two contacting surfaces.

The intensity of this color change directly relates to the temperature it was exposed to enabling Thermex to reveal spot high or low temperature zones and minute surface variations. These fluctuations cause improper sealing and need to be corrected to ensure quality control.

Many plastics used in packaging fall within Thermex’s temperature range. Vertical form and fill machines as well as vacuum and flat web machines are candidates for this product.  As Thermex is used to measure temperature distribution along the point of contact, its use extends to virtually all interfaces that aren’t easily accessed with traditional temperature indicators and infrared thermometers.

While test results with Thermex may be saved for archival purposes, the film’s low cost renders it inherently disposable. Post processing analysis of Thermex is available for temperature fluctuations that need to be analyzed with great precision.

About Sensor Products Inc. (USA)

Headquartered in Madison, NJ and established in 1990, Sensor Products Inc. is a world leader in the manufacture and distribution of tactile pressure indicating solutions. Their customized and off-the-shelf products are installed within all of the Fortune 500 industrial companies as well as thousands of smaller manufacturing firms. Their sensors are used in applications as diverse as tire testing to semiconductor manufacturing and from R&D labs to space missions.

For a complimentary sample or more information about Thermex, call Sensor Products Inc. at 1-973-884-1755,  e-mail info@sensorprod.com or view at www.sensorprod.com/thermex.

Photo image: Temperature profile of sealing element using Thermex. Photo courtesy of Sensor Products Inc.