Thermal Materials : Thermal Substrates : Fans and Blowers : Membrane Switches : Touch Screens

HeatSeal Reliability
Applications
Design and Construction
Resistive Touch System
Manufacturing
Awards and Certifications
HeatSeal Data Sheet

Manufacturing

Accuracy and Quality.  Whether it's screened silver circuits or graphics, accuracy and quality are first and foremost at Bergquist. Our state-of-the-art screen making and printing facilities feature the latest technologies and professionals who know how to use them.

Screen Making

Our state-of-the-art CAD system outputs directly to finished film via a photo laser imagesetter. Finished film is then exposed directly to screen stencils. All film layers are registered using optical equipment to ensure consistently accurate registration of screened circuitry and graphics. Pneumatic screen stretchers are utilized for accuracy and each screen is tested for uniformity of pressure before use.

Screen Printing

Our screen printing facility is QS-9000/ISO 9002 certified and a model of cleanliness, precision and efficiency. Automatic, semi-automatic and manual presses are matched to each switch project for maximum productivity and cost-efficiency. The Bergquist Company uses a computerized color matching system to formulate custom colors for your membrane switch. This system helps us make the necessary color adjustments needed to provide colors that will match the rest of your assembly from start to finish.

Process Controls

Bergquist employs a wide variety of process control tools and techniques including:

• Variety of SPC controls to insure repeatable product quality
• Heat stabilization of circuit and graphic substrate materials
• Statistical monitoring of screen tension
• First article inspection of each screened layer
• Belt speeds and UV light output are monitored using SPC techniques for accurate process control
• UV hardcoats are cured using a Linde nitrogen curing system

Every Step is Important

At Bergquist, every step in our manufacturing process, including the embossing, die cutting and assembly processes described here, are critically important to achieving the high standards that we and our customers expect.

Polyester Dome Forming and Graphic Embossing

Our specialized multi-station embossing and dome forming presses allow the operator to work quickly through consecutive operations. Our in-house dome forming equipment provides consistent tactile feel from dome to dome and lot to lot.

Die Cutting

At Bergquist, craftsmanship and technology work seamlessly together to deliver a higher quality solution. Our premium hardwood die boards are precision cut on a CNC laser cutter from approved CAD files. In our complete in-house die shop, experienced steel-rule die makers ensure long production life, accuracy, and faster turnaround. Pin registration is used in die cutting to maintain accuracy throughout all processes. Our die-cutting presses are set-up, maintained and operated by highly skilled people who understand the critical nature of membrane switch quality.

Assembly

Membrane switch assembly at Bergquist is a function of skilled people and quality-driven processes. Switch layer assembly is all pin registered for consistent accuracy. The exclusive Bergquist HeatSeal process is equally precise and consistent. The result is a custom membrane switch that performs as specified and will stand the test of time.