COMPRESSION MOLDING
Compression molding is done with matched metal molds
utilizing sheet-molding compound (SMC), bulk-molding
compound (BMC), or preform mat. A weighed charge of SMC
or BMC, or a preform of glass reinforcement shaped to the
mold is placed on a press ranging in size from 300 to
4,000 tons. Resin is added with the preform while SMC and
BMC contain all components including fiber, resin,
fillers, catalyst etc. Heat and pressure is applied, with
temperature ranges of 225 to 325 oF. and 150 to 1,000 psi
pressure required to cure parts. Cycles can range from
less than one to five minutes. Typical thermoset resins
used in compression molded parts are polyesters, vinyl
esters, epoxies, and phenolics. Compression molded
products vary from dinnerware, trays, buttons, appliance
housings, large containers, electrical, to recreational
vehicle body panels such as snow mobiles, and jetskis.
For
more information, contact....
CT Processes | Participants | Links
Web Author: Terry Price (tprice@cerritos.edu)
Disclaimer
Last update: 11/14/01 |
