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US 4,046,103 AGranted
Impregnating die
AssigneeOwens-Corning Fiberglas Corporation
InventorPaul D. Yakuboff
Life of this patent
Estimating the term…
Abstract
A die for impregnating yarn is provided with a die insert having a minimum inside diameter. An inlet duct opening into the die has walls with length L, the walls sloping at an angle within the range of from about 5 degrees to about 25 degrees. The length of the inlet duct is within the range of from about 10 to about 25 times the minimum inside diameter of the die insert. The maximum diameter of the inlet duct is within the range of from about 15 to about 35 times the minimum inside diameter of the die insert.
Claims5
A die comprising:
- a. a die insert having a bore with a tapered entrance, said bore tapering to a minimum inside diameter d;
- and,
- b. an inlet duct having a frustro-conical inner surface, said inlet duct opening into said bore, said surface sloping inwardly at an angle about 8.degree., said inlet duct having a length L, said length L being defined by the relation
- L=rd
- wherein r is a parameter having a value within the range of from about 10 to about 25, and said inlet having a maximum inside diameter D, said diameter D being defined by the relation
- D=sd
- wherein s is a parameter having a value within the range of from about 15 to about 35.
4 more elements
Dependencies are inferred from the claim text.