Food Ice Pack
An improved ice pack and method of manufacture for reducing leaking and condensation while providing increased comfort to a user. The ice pack includes at least an outer container and an inner container, the inner container provided inside the outer container and enclosing a freezable agent. A planar bonded portion of the outer and/or the inner container defines at least one rounded corner.
1 . An ice pack comprising:
a flexible inner container, including:
a first planar sheet material enclosing and sealing a first volume;
a freezable agent provided in the first volume; and
a flexible outer container, including:
a second planar sheet material enclosing and sealing a second volume, said second volume being greater than the first volume,
wherein the inner container is provided in the second volume of the outer container.
2 . The ice pack according to claim 1 , the outer container defining a gap between the first planar sheet material of the inner container and the second planar sheet material of the outer container.
3 . The ice pack according to claim 2 , including an insulating material in the gap between the first planar sheet material and the second planar sheet material.
4 . The ice pack according to claim 3 , the insulating material comprising air.
5 . The ice pack according to claim 3 , the insulating material comprising beads or a gel.
6 . The ice pack according to claim 2 , wherein the gap includes a vacuum.
7 . The ice pack according to claim 1 , wherein the freezable agent comprises water or a freezable gel.
8 . The ice pack according to claim 1 , the first planar sheet material having a first thickness and the second planar sheet material having a second thickness, wherein the first thickness is less than the second thickness.
9 . The ice pack according to claim 1 , the second planar sheet material including an interior surface facing the second volume, the interior surface provided with a plurality of ribs or protrusions extending therefrom.
10 . The ice pack according to claim 1 , the second planar sheet material including at least one planar bonded portion, the at least one planar bonded portion forming an extension from the outer container having rounded corners.
11 . The ice pack according to claim 10 , wherein the second planar sheet material is folded on itself in the at least one planar bonded portion, the at least one planar bonded portion including an adhesive in a fold of the second planar sheet material.
12 . The ice pack according to claim 10 , wherein the second planar sheet material is folded on itself in the at least one planar bonded portion, the at least one planar bonded portion including a plastic weld of the second planar sheet material.
13 . The ice pack according to claim 1 , the second planar sheet material including at least one planar bonded portion, the at least one planar bonded portion forming an arcuate extension from the outer container.
14 . The ice pack according to claim 1 , the first planar sheet material including a polyethylene plastic.
15 . The ice pack according to claim 1 , wherein the second planar sheet material has a lower rigidity than the first planar sheet material.
16 . The ice pack according to claim 1 , wherein the first planar sheet material and the second planar sheet material are impermeable to water.
17 . The ice pack according to claim 1 , wherein the first planar sheet material and the second planar sheet material are impermeable to air.
18 . The ice pack according to claim 1 , including a textile cover surrounding the flexible outer container.
19 . A method of manufacturing an ice pack, the method comprising:
obtaining a flexible inner container, including:
a first planar sheet material enclosing and sealing a first volume;
a freezable agent provided in the first volume;
obtaining a second planar sheet material on a machine roll, the second planar sheet material provided in a tube-shaped configuration;
cutting the second planar sheet material to form a rounded perimeter edge; and
providing the inner container within the second planar sheet material and bonding the perimeter edge for forming a flexible outer container having at least one planar bonded portion, the at least one planar bonded portion forming an extension from the outer container having rounded corners.
20 . A method of manufacturing an ice pack, the method comprising:
obtaining a flexible inner container, including:
a first planar sheet material enclosing and sealing a first volume;
a freezable agent provided in the first volume;
obtaining a second planar sheet material on a machine roll, the second planar sheet material provided in a tube-shaped configuration;
forming at least one concave indentation in the second planar sheet material; and
providing the inner container within the second planar sheet material and bonding the second planar sheet material to form a flexible outer container having at least one planar bonded portion, the at least one planar bonded portion forming an extension from the outer container having a rounded corner defined by the at least one concave indentation.