Apparatus for making filter elements for gas or liquid

Details Apparatus for making filter elements for gas or liquid Apparatus for making filter elements for gas or liquid

1979-08-07

1981-06-09

Chin, Peter

Paper making and fiber liberation

Apparatus

Foraminous forming mold for discrete articles

162408, 162409, D21J 700

Patent

active

042723183

ABSTRACT:
Tubular filter elements are formed by first feeding a slurry into a tubular moulding space between a vertical core and a cylindrical fine mesh screen. Air pressure is applied to the slurry so that the liquid drains through the screen and through a screen at one base of the space, while a mass of microfibres builds up to be removed from the space for bonding by a synthetic resin. A reciprocable sleeve increases the effective height of the screen as the mass builds up. Layers of microfibres having different qualities can be assembled by using different core diameters in succession. Filter elements that need not necessarily be cylindrical can be formed by this or analogous pressure methods in which the majority of the microfibres are directed approximately parallel to one another, and/or in which one or each face of the filter element has moulded into it a perforated sheet of supporting material.

REFERENCES:
patent: 1895687 (1933-01-01), Rutishavser

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