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US 2023/0405960 A1Published application
Fluorochemical-free microwave popcorn package and production process
OwnerDavid W. France, John Garnett, IV +2inventors
InventorsDavid W. France, John Garnett, IV, Jordan Dasher, Ryan O'Hern
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Abstract
A microwave popcorn package is described that includes unique combinations of low porosity paper, flexible adhesive with broad coverage, and narrowed seal configurations that combine together to address unique issues associated with interaction of the individual features.
Claims20
A heat seal jaw for forming a heat seal in a microwave popcorn package, comprising:
- a heat seal body portion extending longitudinally between opposing first and second ends, the heat seal body portion defining a first side extending between the first end and the second end and defining a second side extending between the first end and the second end opposite the first side;
- and
- a seal portion extending and tapering from the heat seal body portion, the seal portion defining a first tapered portion on the first side and a second tapered portion on the second side, wherein each of the first tapered portion and the second tapered portion includes a taper from about 50 degrees to about 70 degrees from a horizontal extending from the first side to the second side to keep non-seal edge portions of the heat seal jaw away from paper and adhesive of the microwave popcorn package to avoid substantial moisture flashing that could introduce bubbles or voids in the adhesive.
A process for forming a microwave popcorn package from substantially entirely non-fluorocarbon material, comprising
- providing a first feed of paper as a first ply of a wick resistant two-ply bag structure, the first ply having a porosity of at least 50,000 Gurley-sec;
- providing a second feed of paper as a second ply of the bag structure, the second ply having a porosity of at least 50,000 Gurley-sec;
- introducing a flexible adhesive to at least one of the first ply or the second ply to coat substantially all at least one of an exterior surface of the first ply or an interior surface of the second ply with the flexible adhesive;
- introducing the flexible adhesive as a heat seal coating on an interior surface of the first ply in a plurality heat seal coating regions with the adhesive covering substantially all of the heat seal coating regions,
- laminating the first ply and the second ply together to provide a laminated paper;
- and
- forming a longitudinal seal in the bag structure with a heal seal jaw in contact with the laminated paper to define an expandable bag interior, the heat seal jaw including
- a heat seal body portion extending longitudinally between opposing first and second ends, the heat seal body portion defining a first side extending between the first end and the second end and defining a second side extending between the first end and the second end opposite the first side;
- and
- a seal portion extending and tapering from the heat seal body portion, the seal portion defining a first tapered portion on the first side and a second tapered portion on the second side, wherein each of the first tapered portion and the second tapered portion includes a taper from about 50 degrees to about 70 degrees from a horizontal extending from the first side to the second side to keep non-seal edge portions of the heat seal jaw away from paper and adhesive of the microwave popcorn package to avoid substantial moisture flashing that could introduce bubbles or voids in the adhesive.
7 more elements
Dependencies are inferred from the claim text.