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US 4,331,730 AGranted
Fibrous web structure
AssigneeAmerican Can Company
InventorWayne P. Sorenson
Life of this patent
Estimating the term…
Abstract
Apparatus for the deposition of a uniform web of dry wood pulp fibers on a forming wire in combination with melt blowing die means operable to deposit melt blown fibers on the web of dry fibers to strengthen the web. Means for depositing the webs comprise serially disposed sets of fiber distributors, and the die means is disposed between the sets of fiber distributors so that the melt blown fibers are deposited as separate layers on the finished web.
Claims1
A fibrous web comprising:
- at least a pair of layers of dry-laid nonstaple wood fibers of a predetermined length of about 1/8 inch;
- and an intermediate layer consisting of randomly laid, overlapping melt-blown filamentary polymer fibers from about 5 inches to about 15 inches in length, said polymer fibers bonding said layers together.
Dependencies are inferred from the claim text.