Tri-layer food container
AssigneeGrupo Convermex, S.A. de C.V.
InventorsBenito Alvarez, Efren de Urquijo Carmona
Life of this patent
Estimating the term…
Abstract
A container for holding food or beverages includes an inner thermoformed sleeve and a molded insulating foam support layer. The inner sleeve and foam support layer each have a circumferential wall extending from a bottom wall. The foam layer is bonded to the thermoformed sleeve on the outside or inside of the sleeve. The container can also include an outer sleeve bonded to an outer surface of the foam support layer. The inner sleeve may be made of thermoformed polystyrene. The outer sleeve may be a paper label.
Claims40
A container comprising:
- an innermost thermoformed plastic sleeve with a circumferential sidewall extending from a bottom wall, the innermost sleeve providing barrier resistance from material placed within the container, the thermoformed plastic sleeve being seamless;
- an insulating molded foam support layer with a circumferential sidewall extending from a bottom wall, the foam layer being bonded to the inner thermoformed sleeve, the foam support layer providing thermal resistance from material placed within the container, the foam support layer being seamless;
- and
- an outermost paper sleeve bonded to an outer surface of the foam support layer, and
- wherein the innermost sleeve has a higher density than the foam support layer.
A food container comprising:
- a cup-shaped innermost thermoformed plastic sleeve with a circumferential sidewall extending from a bottom wall, the sleeve being seamless;
- a cup-shaped molded plastic support layer, the support layer being seamless;
- and
- an outermost paper sleeve layer bonded to an outer surface of the support layer,
- wherein the support layer includes a circumferential sidewall extending from a bottom wall with an inner diameter larger than an outer diameter of the inner sleeve such that the innermost sleeve is bonded to an inside surface of the support layer, and
- wherein the innermost sleeve has a higher density than the support layer, and wherein the innermost sleeve comprises the same plastic material as the support layer.
A method of forming a container comprising:
- thermoforming a plastic sleeve with a bottom wall and upwards extending circumferential sidewall such that the plastic sleeve is seamless;
- forming a molded one-piece insulating, beaded foam support layer with a bottom wall and upwards extending circumferential sidewall such that the support layer is seamless;
- bonding the plastic sleeve with the foam support layer to form a seamless container;
- and
- bonding an outer paper sleeve to an outer surface of the seamless container.
A container comprising:
- an innermost thermoformed plastic sleeve with a circumferential sidewall extending from a bottom wall, the innermost sleeve providing barrier resistance from material placed within the container, the thermoformed plastic sleeve being seamless;
- and
- an insulating molded foam support layer with a circumferential sidewall extending from a bottom wall, the foam layer being bonded to the inner thermoformed sleeve, the foam support layer providing thermal resistance from material placed within the container, the foam support layer being seamless, and
- wherein the innermost sleeve has a higher density than the foam support layer.
Dependencies are inferred from the claim text.