A packaging device including a breathable or non-breathable, microwavable composite film structure in the form of a bag, a tray or other type of container is disclosed. The device may include atmospheric control attributes in the form of microperforations, and steam venting mechanisms in the form of precision cuts or channels. The microperforations may form atmospheric conditions within the device for the storage of perishable and/or respiring food products, and the steam venting mechanisms may regulate the pressure and/or heat within the device during microwave cooking of the food products within.

A process and apparatus for heating a microwave transparent material or di-polar material. The apparatus includes a vessel that has susceptor material on at least a portion of the vessel walls. Microwaves are generated by a microwave transmitter and introduced into the vessel which can heat both microwave transparent materials and di-polar materials within the vessel.

A biodegradable microwave susceptor and constructs incorporating the susceptor are disclosed for heating a food item in a microwave oven. The biodegradable microwave susceptor includes a patterned susceptor layer of metal on a biodegradable substrate. Selected areas of the susceptor layer may be demetallized to remove susceptor material. The susceptor may be incorporated into a construct for containing or supporting a food item to be heated.

A package, for example, a freezable microwavable package containing a food product, has a sealing film that includes a vent system that is scored into the package.

A microwave heating sheet includes a substrate and a heating layer disposed on a first surface of the substrate. The heating layer includes a polar solvent that has a boiling point of not less than 100 C. and a polyelectrolyte that is dissolved in the polar solvent.

A method for preparing no-mess fudge is provided. The process for preparing no-mess fudge may include a firming container and a stand-up container. The stand-up container retains a plurality of pre-measured fudge ingredients. The stand-up container may be sleeve providing a seal on one end and a flat base on the other. In preparation of making fudge, a user may cut vents and/or tear notches through the seal. The user may then heat the stand-up container for a sufficient time to properly prepare the plurality of ingredients. The user may then knead the stand-up container for a sufficient time to properly mix the plurality of ingredients. The user may then urge the plurality of ingredients out of the stand-up container and into the firming container so that the plurality of ingredients may set to fudge of a desired hardness.

The present invention relates to the use of a laminate film, which can be transparent or white or colored (as described in the specification), comprising a first bi-axially oriented polyester film laminated to a second bi-axially oriented polyester film, wherein said first bi-axially oriented polyester film comprises a polyester base film comprising at least one polyester layer comprising one or more co-polyester(s) comprising units of terephthalic acid and at least a diol, said second bi-axially oriented polyester film comprises a polyethylene terephthalate base film, an inorganic vapor deposited layer, and an optional outer protective layer directly adhered to said inorganic vapor deposited layer, said inorganic vapor deposited layer comprising an inorganic compound selected from the group consisting of oxides, nitrides and oxynitrides of Al, Ti, Si, Zn, Sn, and mixture thereof, and a glue layer is interposed between said first bi-axially oriented polyester film and said second bi-axially oriented polyester film, and wherein said laminate film has (i) a tear ratio, between the tear initiation force measured according to ASTM D-1004 and said first bi-axially oriented polyester film total thickness, of at least 37 gf/micron in at least one of longitudinal and transverse direction, and (ii) a free shrink measured according to modified IS011501-95 at 180 C. for 5 minutes lower than 5% in at least one of longitudinal and transverse direction, as a lid in tray lidding applications and to the tray lidding packages made therefrom.

A package includes: a film including a crystalline stretched oriented film; and a breaking portion provided in the film and including one or more non-oriented portions formed by heating a part of the crystalline stretched oriented film at a temperature equal to or higher than a melting point of the crystalline stretched oriented film and facing each other with an oriented portion of the crystalline stretched oriented film interposed therebetween.

A hermetically sealed package, for example a freezable microwavable package containing a food product, has a sealing film that includes a vent system that is scored by a laser into the package.

The present invention relates to thermoforming food packaging methods and to dual ovenable thermoformed food packages suitable for cooking food products directly in the package in microwave, conventional and convection ovens. These packages are characterized by good hermeticity, clean peelability, self-venting, very good optics and, if shrunk, a very appealing appearance.