Surface Pressure-Indicating Sensor Film Ideal for Ensuring Proper Sealing and Alignment in Injection and Other Types of

Sensor Products, Inc. (Madison, NJ) offers Pressurex®, a thin flexible plastic film that instantly captures and permanently records pressure distribution and magnitude between any two mating or contacting surfaces. Physically similar in appearance to ordinary paper, Pressurex®, which is four or 8 mils thick, conforms to curvaceous surfaces and is available in sheets or rolls that can be cut to size. After being clamped up and placed around the parting line of a mold, Pressurex® reveals whether the pressure is evenly distributed on the parting line. Pressurex® reveals pressure from 2 - 43,200 PSI (0.14 - 3,000 kg/cm2) and is available in eight different pressure ranges, with medium and high pressure being the most commonly used for injection molding applications. When placed between two contacting surfaces, the film instantaneously and permanently changes color directly proportional to the actual pressure applied. Precise pressure magnitude is easily determined by comparing the resultant color intensity to a color correlation chart (conceptually similar to interpreting Litmus paper). No training or instrumentation is required. Pressurex® has applications in injection molding, injection-blow, injection-compression, gas assist, water assist or any molding where mating metal surfaces are an issue. While the temperature parameters of Pressurex® indicate an operating temperature of 41°F to 95°F (5°C to 35°C), which is suitable for testing metal molds, it has been used at temperatures exceeding 300° for brief periods.