US 4,731,268 A · Multiple layer sheet material

Abstract

The invention is an improved multiple layer packaging sheet material which can be formed into closed and sealed packages suitable for holding products containing substantial fractions of cyanoacrylate. The invention depends on the positioning of high density polyethylene in direct contact with the cyanoacrylate-type product, and positioning a primer on the other side of the high density polyethylene. Preferred embodiments of the sheet structure include additional layers to provide barrier and abuse resistance properties, and the necessary adhesive materials to hold the various layers of the structure together with good adhesion. Additional layers are contemplated. The sheet structure can be formed into a package which positions the high density polyethylene adjacent the cyanoacrylate product, and between it and the other layers at all locations of contact between the cyanoacrylate product and the packaging sheet material.

Claims8

Dependent claims

A container made from a multiple layer sheet material, said sheet material comprising:

(a) a first layer of high density polyethylene as an exterior layer of said sheet material;
(b) a second layer, the composition of said second layer being chosen from the group consisting of polymers and adhesives;
and
(c) a third primer layer of polyethylene imine,
said third primer layer being between said first and second layers and in contact with said first layer, said first layer being disposed toward the inside of said container, all the layers of said sheet material being firmly adhered to each other.

2 more elements

Dependencies are inferred from the claim text.

Multiple layer sheet material

Life of this patent

Multiple layer sheet material

Life of this patent

Abstract

Claims8