Fiber preforming process and coating for screen tooling...

Details Fiber preforming process and coating for screen tooling... Fiber preforming process and coating for screen tooling...

2006-12-12

2006-12-12

Heceknberg, Donald (Department: 1722)

Static molds

Including coating or adherent layer

Parting layer

C425S080100

Reexamination Certificate

active

07147200

ABSTRACT:
An improved screen tooling for a fiber preforming process, and a durable coating system for such tooling. The coating system comprises a surface layer of a porcelain enamel composition that is generally a borosilicate glass, and preferable contains quartz, borax, boric oxide, potassium nitrate, sodium silicofluoride, and manganese dioxide, and optionally contains titanium dioxide, antimony oxide, cobalt oxide and/or barium oxide. Preferred compositions are dependent in part on the screen tooling material. The invention also encompasses a fiber preforming process that utilizes screen tooling with the coating system.

REFERENCES:
patent: 4931551 (1990-06-01), Albisetti et al.
patent: 5601712 (1997-02-01), Adams et al.
patent: 5843365 (1998-12-01), Pinson et al.

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