主权项 |
1. A method of making a microwave packaging material comprising:
preparing a supported susceptor sheet by:
(a) preparing a first susceptor layer and a second susceptor layer by joining a metalized film to a paper substrate using a full adhesive layer;(b) applying a first patterned adhesive to at least one of the first susceptor layer and the second susceptor layer, and laminating the first patterned adhesive between the paper substrate of the first susceptor layer and the paper substrate of the second susceptor layer, thereby forming a layered susceptor sheet and a plurality of sealed air pockets between the first susceptor layer and the second susceptor layer, arranged and configured to inflate with exposure to microwave energy; and(c) applying a second patterned adhesive to one side of the layered susceptor sheet and adhering a paper board thereto, wherein the paper board comprises a plurality of perforations partially penetrating through the paper board; cutting the supported susceptor sheet into a shape comprising a first edge and a second edge positioned opposite of the first edge, and a third edge and fourth edge perpendicular to the first and second edges, and a first tab protruding from the first edge and a second tab protruding from the second edge, the first and second tabs constructed to couple the microwave packaging material in a tubular arrangement with the first and second edges aligned and the third and fourth edges defining end openings. |