Zone: Compression, Pressure Molding

SMC Flexes Muscles in Other Markets

Often identified with automotive body applications, sheet molding compound shows growing promise in a variety of other temperature- and weather-resistant applications.

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Automated solution: New presses for SMC molding process
7/24/2009
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Automotive Composites: Taking Subjectivity out of Class A Surface Evaluation
8/3/2008
 Toward the goal of more consistent, repeatable and quantifiable Class A surface analysis, automakers and systems suppliers are developing and employing automated surface inspection tools.
SMC Flexes Muscles in Other Markets
12/1/2007
Often identified with automotive body applications, sheet molding compound shows growing promise in a variety of other temperature- and weather-resistant applications.
Innovation Driving Automotive SMC
2/1/2007
New materials, methods and machinery are restoring sheet molding compound's preferred material status for automotive and heavy truck body panels.
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For manufacturers and consumers, composites are protecting delicate circuitry and making devices more durable.

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Compression, Pressure Molding

Compression molding is a high-volume process that employs expensive but very durable metal dies. It is an appropriate choice when production quantities exceed 10,000 parts. As many as 200,000 parts can be turned out on a set of forged steel dies, using sheet molding compound (SMC), a composite sheet material made by sandwiching chopped fiberglass between two layers of thick resin paste. To form the sheet, the resin paste transfers from a metering device onto a moving film carrier. Chopped glass fibers drop onto the paste, and a second film carrier places another layer of resin on top of the glass. Rollers compact the sheet to saturate the glass with resin and squeeze out entrapped air. The resin paste initially is the consistency of molasses (between 20,000 cps and 40,000 cps); over the next three to five days, its viscosity increases and the sheet becomes leather-like (about 25 million cps), ideal for molding.

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Product Announcements

Energy-efficient hydraulic lab press
Technical Machine Products 3/4/2009
Data acquisition system for compression molding
Lawton Machinery Group 1/8/2009
Compression press line extended
Greenerd Press & Machine Co. 10/1/2007
Compression molding press - 2/1/2007
2/1/2007
SMC for HVAC
IDI Composites International 2/1/2007

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