SAN FRANCISCO—At Semicon West '98, Poly-Flow Engineering Inc. exhibited a $175,000 parts cleaning system made mostly of BFGoodrich Co.'s new Corzan post-chlorinated PVC sheet material. Usually, Poly-Flow uses polypropylene or fire-retardant PP in the system.
Compression Polymers Group's Vycom unit extruded the sheet in Moosic, Pa., in late May, and Poly-Flow fabricated the system in Sylmar, Calif., using about 1,000 pounds of material, said Robin Douglas, Poly-Flow vice president of sales and marketing. The system is 71/2 feet by 41/2 feet by 7 feet, and took six weeks to make.
Quester Technology Inc. of Fremont, Calif., will use the cleaning system in manufacturing 300-millimeter semiconductor wafers.
Compression Polymers also supplied sheets of Corzan CPVC for three other displays.
Gradient Point Corp. of Scottsdale, Ariz., showed a prototype chemical reaction scrubber for acid gases. Measuring 2 feet by 3 feet by 4 feet, it lists for $37,364, about 18 percent higher than a PVC model, said Jim Huelster, president.
KCH Services Inc. of Forest City, N.C., exhibited a prototype 90-degree, rectangular-elbow exhaust duct that costs about $250.
Peninsula Valve & Fitting of Mountain View, Calif., a distributor for Compression Polymers, showed a scale model of a fabricated wet bench.
Tests at Factory Mutual Research Corp. of Norwood, Mass., have placed Corzan CPVC within allowable limits for fire propagation, smoke and corrosion. FMRC expects to list the material under flammability protocol FM4910 soon.
But getting permission to use CPVC will require educating local authorities,'' David Quadrini, fire marshal with Texas Instruments Inc. of Dallas, said at Semicon.
``Codes will have to be changed to use CPVC,'' and that means convincing the authorities that CPVC is not the same as PVC in terms of fire, smoke and outgas potential, Quadrini said.
BFG developed CPVC sheet material as a fire-safe product for semiconductor wet benches. It makes Corzan in Louisville, Ky.