Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1988-02-25
1990-03-13
Heitbrink, Jill L.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
222135, 222642, 264102, 2643286, 26432814, 26432817, B29C 4513
Patent
active
049081683
ABSTRACT:
Material is supplied to a mold by direct application of gas pressure to a liquid material. A method for the shaping of at least two different synthetic resinous materials by providing a predetermined quantity of up to about 100 cm.sup.3 of a first material in a first material reservoir and a second material in a second material reservoir, the first and second material reservoirs each being in communication with a discharge line having a sufficiently narrow inner diameter such that each reactive quantity may, when propelled by sufficient gas pressure, be propelled in plug flow and each discharge line being in communication with a mold; introducing into each of the first and second gas reservoirs a predetermined volume of a gas at predetermined gas pressures sufficient to propel each quantity of material as turbulently flowing plug into the mold.
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Latta Charles J.
Miller, Jr. Theodore E.
Sutton Tonja R.
Heitbrink Jill L.
Kanuch Bruce M.
The Dow Chemical Company
Zindrick Thomas D.
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