Boots – shoes – and leggings
Patent
1996-11-15
1998-04-14
Voeltz, Emanuel T.
Boots, shoes, and leggings
364578, C06F 1750
Patent
active
057400741
ABSTRACT:
A method for filling a compartment cavity, such as a refrigerative unit cavity, with a foam produced by an expansion and solidification of a foaming mixture of predetermined chemicals. A known amount of the foaming mixture is created in a test chamber cavity and preselected parameters (such as free surface height and pressure) are measured to obtain the average density and apparent viscosity of the foam as a function of time. A computer program uses the average density and apparent viscosity data to simulate the foaming process for various starting quantifies and starting locations of the foaming mixture. A preferred quantity and location are chosen from a particular computer run which satisfies predetermined fill criteria. The preferred quantity of the foaming mixture is then created at the preferred location in the compartment cavity.
REFERENCES:
patent: 5572434 (1996-11-01), Wang et al.
Pertsov et al., "Plateau-Gibbs Borders: Calculation of Shape, Volume, and Transport Parameters", Colloid Journal, vol. 57, n. 5, pp. 673-677 Sep. 1995.
Baser et al., "Modeling of the Dynamics of Water and R-11 Blown Polyurethane Foam Formation", Polymer Engineering and Science, vol. 34, n. 8, pp. 642-649 Apr. 1994.
"Numerical Techniques for Free and Moving Boundary Problems", by H. P. Wang and H. S. Lee, Fundamentals of Computer Modeling for Polymer Processing, Tucker, C.L. (ed), Hanser Publishers, New York, 1989, pp. 340-401.
"An Integrated Approach for Modeling the Injection, Compression, and Resin Transfer Molding Processes for Polymers", by Erwin W. Liang, H.P. Wang and Erin M. Perry, Advances in Polymer Technology, vol. 12, No. 3, John Wiley & Sons, Inc., 1993, pp. 243-262.
Jenkins, Jr. Harold John
Perry Erin Marie
Wang Hsin-Pang
Erickson Douglas E.
General Electric Company
Kemper M.
Snyder Marvin
Voeltz Emanuel T.
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