Boots – shoes – and leggings
Patent
1995-01-11
1996-12-03
Envall, Jr., Roy N.
Boots, shoes, and leggings
G06F 1900, G06G 764, G06G 766
Patent
active
055814689
ABSTRACT:
A system and method for simulating LCM mold filling utilizes at least one processor, suitable RAM and storage memory, input means, display means, and logic for simulating the injection of resin into a mold cavity containing a preform based upon mold cavity design parameters, mold filling processing parameters, physical property parameters, and system processing parameters, and identifying the current state of selected mold filling conditions at selected points in time during the simulated mold filling process. The system includes logic for identifying incipient dry spots, and also preferably includes means for interrupting the operation of the program at selected points to vary selected parameters to eliminate incipient dry spots and otherwise maximize the mold filling process. The system may additionally include logic for determining whether the output from a mold filling simulation satisfies a set of predefined criteria to determine whether a particular mold design and/or filling process is acceptable for use in production and, if so, record the approved mold filling process parameters for transfer and input to an RTM mold control. Alternatively, the system may be incorporated into a conventional mold control for direct input of developed mold filling process parameters into the control for use in operating the mold to produce liquid composite plastic parts.
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Han Kerang
Lee L. James
Shafi Muhammad A.
White Warren D.
Envall Jr. Roy N.
Presley Karen D.
The Dow Chemical Co.
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