A microwave popcorn bag for containing and heating popcorn kernels in a microwave oven. The bag is constructed of a laminated fibrous material and comprises a base panel, top panel, side panels, and interior space. The side panels have gussets with fold areas and fold lines that are adjacent to the base panel and that enable the bag to expand. An oil-resistant microwave susceptor film is laminated with the fibrous material and extends laterally across the base panel and the fold lines into the fold areas. Microwave interactive material is confined to the base panel. As the popcorn is heated, the bag expands and the microwave susceptor film forms a tray structure that collects oil and resists it penetrating through the fibrous material.

Microwave cooking packages suitable for use as microwave popcorn packages include at least one panel (e.g., first and second panels) formed of a vertically rigid material. A flexible portion is attached to the panels. The flexible portion may be formed of a polyester film material such as a biaxially-oriented polyethylene terephthalate (PET) film, which may be at least partially transparent. The flexible portion (and panels) defines a bag construction configured to contain a popcorn charge and to be expandable between a collapsed configuration and an expanded configuration when the popcorn charge is subjected to a popping operation. The microwave cooking package may include a vent assembly configured to at least partially open when the bag configuration is in an expanded configuration to vent the bag construction. The vent assembly includes a first portion a second portion of the bag construction that is configured to be folded against the first portion.

A liquid-oil based fat system for use in microwave popcorn products is described to prevent wicking and leaking of oil from microwave popcorn packaging. In an aspect, a microwave popcorn product includes a charge of popcorn and a slurry including a liquid-based oil, a structuring ingredient, and a seasoning for introduction to a microwave popcorn package that expands during the popping process in a microwave.

A microwave popcorn bag for containing and heating popcorn kernels in a microwave oven. The bag is constructed of a laminated fibrous material and comprises a base panel, top panel, side panels, and interior space. The side panels have gussets with fold areas and fold lines that are adjacent to the base panel and that enable the bag to expand. An oil-resistant microwave susceptor film is laminated with the fibrous material and extends laterally across the base panel and the fold lines into the fold areas. Microwave interactive material is confined to the base panel. As the popcorn is heated, the bag expands and the microwave susceptor film forms a tray structure that collects oil and resists it penetrating through the fibrous material.

A liquid-oil based fat system for use in microwave popcorn products is described to prevent wicking and leaking of oil from microwave popcorn packaging. In an aspect, a microwave popcorn product includes a charge of popcorn and a slurry including a liquid-based oil, a structuring ingredient, and a seasoning for introduction to a microwave popcorn package that expands during the popping process in a microwave.

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.

Microwavable food containers (10) made at least in part from biodegradable and/or compostable materials and processes for producing these containers are described.

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.

A microwave food container which includes one or more oil-resistant areas including an oil-resistant substance for preventing penetration of the microwave food container by liquids such as oils or grease. The microwave food container generally includes a top portion, bottom portion, and pair of side portions. A food item and optional oil-producing substance may be positioned on a microwave susceptor film including a microwave interactive material for applying heat from a microwave oven to cook the food item. One or more areas of the interior of the microwave food container will generally include oil-resistant areas treated with an oil-resistant substance not including fluorocarbons or PFA's to prevent penetration or bleed-through of various liquids during the cooking process.

A wick resistant microwavable popcorn arrangement formed substantially entirely of non-fluorocarbon material includes a folded bag defining a bag interior. The folded bag includes first and second opposite face panels joined by first and second opposite side gussets defined by gusset folds. The bag is folded to define a portion of the interior with side creases defined at junctures between the first face panel and the first and second opposite side gussets. One or more non-activated sealant fields are arranged to overlap at least one of the side creases or the gusset folds, and are configured to provide a liquid-resistant barrier. The one or more non-activated sealant fields are configured to retain the unpopped popcorn kernels, an oil component, and/or a fat component positioned within the bag interior between the first and second side gussets.