High gloss disposable pressware
1 Assignment
0 Petitions
Accused Products
Abstract
A high gloss, disposable pressed paperboard food container includes a glossy bilayer finish. The container is formed in a heated die set from a paperboard substrate provided with a first finish coating layer consisting essentially of a styrene-butadiene resin composition and a second, top coating finish layer consisting essentially of an acrylic resin composition applied to the first finish coating layer. The products of the invention typically exhibit a 60° gloss of greater than about 40 gloss units, as well as reduced moisture pickup and enhanced rigidity.
-
Citations
35 Claims
-
1-16. -16. (Canceled)
-
17. A method of making a high gloss paperboard food container comprising the steps of:
-
(a) preparing a coated paperboard substrate said paperboard substrate being provided with a first finish coating layer consisting essentially of a styrene-butadiene resin composition and a second top finish coating layer consisting essentially of an acrylic resin composition applied to said first layer;
(b) scoring said paperboard substrate in a predetermined pattern suitable for forming said high gloss paperboard food container;
(c) cutting said scored paperboard substrate into a shape appropriate for forming said high gloss paperboard food container;
(d) heat pressing said paperboard blank into said high gloss paperboard food container wherein said container is provided with a plurality of pleats and said food container exhibits a surface gloss of at least about 40 gloss units at 60°
as measured by test method ASTM D523-89. - View Dependent Claims (18, 19, 20)
-
-
21-29. -29. (Canceled)
-
30. A method of improving the wet rigidity of a disposable food container prepared from a paperboard blank in a heated die set, said paperboard blank being starch-sized and provided with a clay coating as well as a finish coating applied thereto and said disposable food container being provided with a plurality of pleats about its periphery;
- said method comprising providing said paperboard blank with a first finish coating layer consisting essentially of a styrene-butadiene resin composition applied to said clay coating and a second finish coating layer applied to said first finish coating layer consisting essentially of an acrylic resin composition.
- View Dependent Claims (31, 32, 33, 34, 35)
Specification