Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – By slinging or rotary-centrifugal fiber distribution
Reexamination Certificate
2006-08-16
2011-12-27
Daniels, Matthew (Department: 1741)
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
By slinging or rotary-centrifugal fiber distribution
C065S505000, C065S520000, C065S521000, C065S516000, C065S518000
Reexamination Certificate
active
08082760
ABSTRACT:
A non-woven product having a core layer (32) containing dense particulate additive between adjacent layers (33) which are substantially free of additive is made by fiberizing a mineral melt on a spinner (1) comprising at least one fiberizing rotor (2, 3, 4) mounted for rotation about a substantially horizontal axis, and the resultant fibres are collected in air streams (5) as a cloud of fibres which travels towards a travelling collector (11) on which a web (14) is formed and carried out of the spinning chamber (9). Dense particles such as magnesium hydroxide are ejected from a suitable ejector (15) on to a baffle (16) by which they are deflected across the width of the chamber and lengthwise over the length of a intermediate collecting zone (B) to form the core layer (32) while the initial and final collecting zone (A and C) are substantially free of the dense particulate additive.
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Daniels Matthew
Herring Lisa
McAndrews Held & Malloy Ltd.
Rockwool International A/S
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