The object of the present invention is to provide a metal container washing apparatus which can obtain hydrogen peroxide for generating hydroxyl radicals and electrolytes using a simple configuration and a simple method and which is small and has excellent portability and storability, and the present invention provides a washing apparatus that washes a metal container of the present invention includes a negative electrode that applies a negative voltage to a metal container to which a washing solution, in which a hydrogen peroxide generating agent generating hydrogen peroxide when dissolved in water is dissolved, is added; a positive electrode that applies a positive voltage to the washing solution; and a power supply that applies a voltage between the negative electrode and the positive electrode, and the inner surface in the container is washed with hydroxyl radicals generated at the time of application of the voltage. It is possible to obtain both of hydrogen peroxide that generates hydroxyl radicals having a strong decomposition ability with respect to stains and electrolytes that allow the washing solution to be electrolyzed with a low voltage such as a voltage that supplied by a battery.

An insulating container can be configured to retain a volume of liquid, and include a first inner wall having a first end having an opening extending into an internal reservoir, and a second outer wall forming an outer shell. The second outer wall can include a second end configured to support the container on a surface. The second outer wall can include a dimple, and the dimple can include a circular base and an inner portion converging to an hole extending into the second outer wall. The hole can be sealed by a resin, and the circular base can be covered by disc formed of the material. Alternatively, a cap can cover the dimple, and a weld can connect the cap to the second outer wall. The container can also include a sealed vacuum cavity forming an insulated double-wall structure between the first inner wall and the second outer wall.

Containers can be configured to retain a volume of liquid, and include a first inner wall having a first end having an opening extending into an internal reservoir, and a second outer wall forming an outer shell. The second outer wall can include a second end configured to support the container on a surface. The containers can include a removably engaged handle.

A method for making a container includes forming a first cavity of a container by shaping an inner wall so that a first surface of the inner wall defines the first cavity; forming a second cavity of the container by shaping an outer wall so that a third surface of the outer wall surrounds a second surface of the inner wall such that together the third and second surfaces define the second cavity; and connecting the inner and outer walls together. The method then includes forming a hole through the outer wall to expose the second cavity to the outside ambient environment and then applying an enamel coating, while preventing the enamel coating from being deposited in the hole. After the enamel coating is applied, the method includes heating the container to glaze the enamel coating and fix the coating to the one or more surfaces.

A double-walled, vacuum-insulated container is manufactured with a cured inside coating. To form the container, an inner liner is disposed in an outer body. The inner liner has an inner sidewall, an inner bottom, and an inner lip, and the outer body has an outer sidewall and an outer lip. The inner and outer lips are affixed together with an affixation or weld having a first melt point. A plenum is enclosed between the inner liner and the outer body by affixing an outer bottom to the outer body and creating a vacuum at least partially in the plenum using a seal having a second melt point. This second melt point can be about 450 C. and 500 C. The coating is painted to an inside surface of the inner liner, and the painted coating is cured with a temperature level at least below the first and second melt points.

A method for making a container includes forming a first cavity of a container by shaping an inner wall so that a first surface of the inner wall defines the first cavity; forming a second cavity of the container by shaping an outer wall so that a third surface of the outer wall surrounds a second surface of the inner wall such that together the third and second surfaces define the second cavity; and connecting the inner and outer walls together. The method then includes forming a hole through the outer wall to expose the second cavity to the outside ambient environment and then applying an enamel coating on at least one of the following: the first surface of the inner wall and a fourth surface of the outer wall that is exposed to the outside ambient environment, while preventing the enamel coating from being deposited in the hole. After the enamel coating is applied, the method includes heating the container to glaze the enamel coating and fix the coating to the one or more surfaces. After the enamel is glazed, the method includes removing air from the second cavity; and then while the air is removed from the second cavity, sealing the second cavity so that the pressure inside the second cavity is less than the pressure in the outside ambient environment.

An insulating container can be configured to retain a volume of liquid, and include a first inner wall having a first end having an opening extending into an internal reservoir, and a second outer wall forming an outer shell. The second outer wall can include a second end configured to support the container on a surface. The second outer wall can include a dimple, and the dimple can include a circular base and an inner portion converging to an opening extending into the second outer wall. The opening can be sealed by a resin, and the circular base can be covered by disc formed of the material. The outer wall and the inner wall can be constructed from different materials such that the outer wall is harder and resists indentation, and the inner wall reduces the overall weight of the container.

Disclosed embodiments relate to a removable insert structure, which may be formed of glass and configured to be disposed within an outer vessel. The insert structure may have a sipping portion configured to extend out of the open end of the outer vessel. In some embodiments, the cross-sectional width of the sipping portion may vary, for example from the shoulder end to the sipping end. For example, the cross-sectional width of the sipping portion may be wedge-shaped, with the width at the sipping end being less than the width at the shoulder end. Insulated containers including removable insert vessels and lids for use with insulated containers are also disclosed.

A drinking vessel includes an outer vessel, a deformable retaining flange, and a removable insert structure formed of glass and configured to be disposed within the outer vessel. The insert structure may have a sipping portion configured to extend out of the open end of the outer vessel and the deformable retaining flange is configured to releasably retain the insert structure within the outer vessel.

Methods and equipment to apply a decorative surface on a building panel wherein the surface includes a mix of fibres, binders, wear resistant particles and pigments. Layers may be applied as separate layers with equipment that applies essentially only one of the materials in the surface mix. A method of forming a surface layer on a substrate, the method including forming a first layer of a first material, applying a second layer of a second material on the first layer, mixing the first and second layers into a mix comprising the first and the second material, and applying the mix on a substrate for forming a surface layer.