Pressurex® flexible Mylar-based sensor film from Sensor Products (Madison, NJ) captures and permanently records pressure distribution and magnitude between mating or contacting surfaces in the injection-molding of medical devices. After being clamped up and placed around the parting line of a mold, the sensor film indicates whether the pressure is evenly distributed. It reveals pressure from 2 – 43,000 PSI and is available in eight different pressure ranges.

When placed between two contacting surfaces, the film instantaneously and permanently changes color directly proportional to the actual pressure applied. Pressure magnitude is determined by comparing the resulting color intensity to a color correlation chart. Physically similar in appearance to ordinary paper, the film is 4 or 8 mils thick, and conforms to curvaceous surfaces. It is available in rolls or sheets. The film has an operating temperature range of 41 to 95°F.

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Topics:
Medical Sensors

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    This article first appeared in the May, 2009 issue of Medical Design Briefs Magazine (Vol. 33 No. 5).

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