Static molds – Forming grid or lattice type product
Patent
1985-05-02
1987-12-29
Woo, Jay H.
Static molds
Forming grid or lattice type product
249 74, 249144, 249176, 264 31, B29C 3902
Patent
active
047155760
ABSTRACT:
The invention is a flexible mask for use in charging a flowable material into selected cells of a honeycomb structure and is of particular utility in charging a sealing material into the ends of selected cells of such a structure during fabrication of solid particulate filter bodies and other selectively plugged honeycomb structures. The mask has a central body with a set of openings extending therethrough which allow passage of the flowable material through to the selected cells and a second set of protrusions extending from one of the surfaces of the mask which are used to align the mask to the end face of the structure and which extend into and sealably cover the cells which are not to receive the flowable material. The mask may be formed from a polymer, preferably an elastomer, using any of three disclosed die apparatuses. The mask may be used by fitting it to an end face of the structure and charging the flowable material through its openings or by fitting the mask across the orifice of an appropriate charging device, such as a ceramic cement press, and bringing the structure to the mask for fitting and charging.
REFERENCES:
patent: 1576019 (1926-03-01), Zimetbaum
patent: 2037545 (1936-04-01), Sexton
patent: 2397223 (1946-03-01), Valdastri, Sr.
patent: 2566817 (1951-09-01), Yellin
patent: 4096068 (1978-06-01), Walker
patent: 4332537 (1982-06-01), Slepcevic
Corning Glass Works
Fortenberry J.
Wardell R. N.
Woo Jay H.
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