Self-sealable corrosion protectable packaging material and method of making
AssigneeThe Orchard Corporation of America
InventorsPasco R. Santurri, Howard W. Mumm, Thomas E. Yockey
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Abstract
Packaging material for ferrous metal parts and the like which comprises a substrate of paper stock, transparent film or foil, and having applied thereon a coating comprehending a vapor phase corrosion inhibitor of the nitrite-amide type, and a self-sealable adhesive as from the natural and synthetic latices. The proportion of the inhibitor to the latices in the coating is in the range from 5 to 25 percent by weight depending upon the characteristics of the substrate.
Claims15
A packaging material providing sealed containers for ferrous metal articles comprising a flexible transparent film substrate from the class consisting of polybutylene, polyethylene, polypropylene, polystyrene, and polyethylene terephthalate, said container having first and second confronting surface portions for mutual adherence when said container is closed, a homogeneous coating provided upon said substrate including said confronting first and second surface portions, said coating comprising between 5 to 25% by weight of a water soluble aliphatic nitrite-amide composition and approximately 75 to 95% by weight of a dried latex, said amide composition being from the class consisting of propionamide, allyl urea, acetamide, propyl carbamate, butyramide, dimethyl urea, guanidine, stearamide, and N-butyl urea.
The method of providing a packaging material for developing closures for ferrous metal parts comprising providing a substrate from the class consisting of transparent films, providing a water soluble aliphatic nitrite-amide solution, providing a latex emulsion, intermixing said nitrite-amide solution in said latex emulsion, and then applying said nitrite-amide-latex mixture in a coating upon confronting portions of said substrate under atmospheric conditions, permitting the coating to dry to provide a cohesive bond for said confronting substrate portions, and then forming said substrate into a pouch for cold sealing.
Dependencies are inferred from the claim text.