A temperature controller assembly is configured to heat and cool liquid within a container. The temperature control assembly has a printed circuit board electrically coupled to a battery, a heat exchanger, and a control switch. A container is mechanically coupled to the heat exchanger and has a volume less than 30 ml. The battery has a battery capacity of 18.5A-h such that when connected to a 3.7 V output to the heat exchanger the battery provides approximately 60-80 watt-hours of energy to the heat exchanger to heat or cool the liquid in the container.

Methods of making printed flexible packaging material for retort applications include steps of digital printing on a flexible substrate material using polymeric ink and curing the printed ink. The printed ink on the material and packaging made therefrom exhibits resistance to blurring and discoloration under retort conditions.

A device for storing oil or another vaporizable substance can include a porous body adapted to absorb a volume of liquid and to retain the volume of liquid for vaporization. A porous body can include a matrix of pores adapted to take up and retain oil by capillary action. A method of vaporizing oil can include storing the oil in a porous body and heating the body.

A one-way valve, a food package comprising such a one-way valve and a method for manufacturing such a one-way valve is disclosed. The valve comprises a first membrane and a second membrane having a smaller surface area than the first membrane and furthermore being fixed to a bottom surface of the second membrane. The valve is furthermore adapted to be fixed to the food package and cover the aperture such that a canal is formed between the food package and the second membrane when a gas pressure inside the food package exceeds a threshold value, the canal extending from the aperture to the peripheral edge of the first membrane along the second membrane.

A method of manufacturing a foil for enclosing or wrapping a product configured to be heated in an oven includes: providing an aluminium layer, applying a first ink material at a surface of the aluminium layer to form a first ink layer, and applying a second ink material at a surface of the first ink layer to form a second ink layer. The first ink layer is positioned between the aluminium layer and the second ink layer, and is configured to absorb radiant energy. The second ink layer is configured to allow radiant energy to pass through to reach the first ink layer. A binder system of the first ink material or the second ink material is based at least in part on polyvinyl butyral (PVB).

A device for storing oil or another vaporizable substance can include a porous body adapted to absorb a volume of liquid and to retain the volume of liquid for vaporization. A porous body can include a matrix of pores adapted to take up and retain oil by capillary action. A method of vaporizing oil can include storing the oil in a porous body and heating the porous body.

An embodiment relates to a multi-layer, biaxially oriented polyester (BOPET) film comprising a food contact substance, wherein the BOPET has a percent release in a retort test after can lamination such that substantially all food contacting the BOPET during the retort test is released. Another embodiment relates to a method comprising applying a food contact material comprising a food contact substance to a multi-layer, biaxially oriented polyester (BOPET) film, wherein the food contact material is prepared at around room temperature without heating.

The present disclosure relates to a cooking container having a steam discharge portion, wherein a lid film attached on the steam container does not need to be opened when seal-packed food is heated and cooked by using a microwave oven, and a uniform pressure can be maintained during heating and cooking so that cooking quality of the corresponding content can be improved.

The present disclosure relates to a heating container for cooking food including an outer container, a heating agent container which provides an internal space for receiving a heating agent, an inner container which is received in an internal space of the outer container, and a lid which is separably connected with the outer container to close an open top of the inner container, wherein the outer container includes an outer container bottom having a bottom opening, and an outer container sidewall which extends upward from the outer container bottom, and the heating agent container is separably connected to the outer container such that at least part extrudes outward through the bottom opening.

A one-way valve, a food package comprising such a one-way valve and a method for manufacturing such a one-way valve is disclosed. The valve comprises a first membrane and a second membrane having a smaller surface area than the first membrane and furthermore being fixed to a bottom surface of the second membrane. The valve is furthermore adapted to be fixed to the food package and cover the aperture such that a canal is formed between the food package and the second membrane when a gas pressure inside the food package exceeds a threshold value, the canal extending from the aperture to the peripheral edge of the first membrane along the second membrane.