Patterned dual susceptor
AssigneeSFC Global Supply Chain, Inc.
InventorJames Persells
Life of this patent
Estimating the term…
Abstract
A microwave packaging material includes a plurality of susceptors where each susceptor includes a plastic film or polymer with a metal layer on one surface of the plastic film and a paper adhered to the plastic film opposite the metal layer. A patterned adhesive is bonded between a first susceptor layer and a second susceptor layer in a pattern bond creating sealed air pockets. A paper board substrate is adhered using an adhesive in a bond pattern to one of the susceptor layers to provide the microwave packing material rigidity. Upon exposure to microwave energy in a microwave oven, moisture is trapped between the paper board substrate and the susceptor layer creating a vapor pressure that causes the sealed air pockets to form expanded air pockets.
Claims23
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.
A method of making a microwave packaging material comprising:
- (1) 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 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,
- wherein the supported susceptor sheet has a rectangular 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
- (2) forming the supported susceptor sheet into a tubular sleeve constructed to fit around a food item.
Dependencies are inferred from the claim text.