Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Embodying intertwined or helical component
Patent
1989-05-12
1993-08-31
Cannon, James C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Embodying intertwined or helical component
139420R, 139420A, 139383A, 1623581, 1623582, 162902, 162903, 428229, 428257, 428258, 428259, D03D 1500, D21F 302, D21F 708, D21F 712
Patent
active
052407632
ABSTRACT:
A papermakers fabric and method of designing and manufacturing same which exhibits high tolerance to temperature and/or moisture variation and as a result, retains dimensional stability avoiding these problems. A specific fabric construction is selected having a defined machine direction (MD) and cross machine direction (CMD) yarn components. A mathematical model of the selected fabric structure is then defined in terms of the dimensions of the yarn components in relationship to the machine direction length of the fabric. The percent change in fabric length is then determined as a function of both the dimensions and the expansion characteristics of the MD and CMD yarns. The fabric is then designed to have calculated expansion characteristics within selected tolerances.
REFERENCES:
patent: 3473576 (1969-10-01), Amneus
patent: 3815645 (1974-06-01), Codorniu
patent: 4695498 (1987-09-01), Sarrazin et al.
patent: 4755420 (1988-07-01), Baker et al.
Choy, C. L., Thermal Expansivity of Oriented Polymers, Developments In Oriented Polymers, edited by Ian Ward, 1982, pp. 121-151.
Johnson C. Barry
Wagner J. Robert
Asten Group Inc.
Cannon James C.
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