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A thermal insulation article for placement in a shipping container to hold an item includes a multi-section thermally insulating pad shaped to be positioned in a cavity of a rectangular prism shipping container. The pad includes a plurality of solid compostable panel sections formed primarily of gra

A thermal insulation article for placement in a shipping container to hold an item includes a multi-section thermally insulating pad shaped to be positioned in a cavity of a rectangular prism shipping container. The pad includes a plurality of solid compostable panel sections formed primarily of grain starch, and a water-proof polyethylene film forming a pocket enclosing the plurality of panel sections. Each panel section holds together as a single unit, and each panel section provides a rectangular plate dimensioned to substantially span whichever of the floor, plurality of side walls or cover that the rectangular plate is adjacent. The pad is configured to be foldable at a right angle along a boundary between the panel sections. The film provides both an interior and an exterior surface of the pad where the pad is folded.

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1. A shipping container to hold an item, comprising: an exterior box having a floor and a plurality of side walls to define a cavity therein and an opening to the cavity at a top of the box;a cover to close off the top of the box; anda plurality of thermally insulating pads positioned in the cavity,

1. A shipping container to hold an item, comprising: an exterior box having a floor and a plurality of side walls to define a cavity therein and an opening to the cavity at a top of the box;a cover to close off the top of the box; anda plurality of thermally insulating pads positioned in the cavity, the plurality of thermally insulating pads positioned such that each of the floor, plurality of side walls and cover are adjacent to and covered by a pad from the plurality of thermally insulating pads, the plurality of thermally insulating pads shaped to provide an interior space to receive the item, wherein each pad of the plurality of thermally insulating pads includes a solid compostable panel formed primarily of a starch that holds together as a single unit, the panel providing a rectangular plate dimensioned to substantially span whichever of the floor, plurality of side walls or cover that the rectangular plate is adjacent, anda water-proof polyethylene film forming a pocket enclosing the panel;wherein at least one of the plurality of thermally insulating pads includes a plurality of rectangular panel sections, wherein the pad is folded at a right angle along a boundary between the panel sections and each panel section is dimensioned to substantially span whichever of the floor, plurality of side walls or cover that the panel section is adjacent, and wherein the film provides both an interior surface of the pad and an exterior surface of the pad where the pad is folded. 2. A thermal insulation assembly for placement in a shipping container to hold an item, comprising: a plurality of thermally insulating pads shaped to be positioned in a cavity of a rectangular prism shipping container such that each of a floor, plurality of side walls and cover of the container are adjacent to and covered by a pad from the plurality of thermally insulating pads and an interior space is provided to receive the item, wherein each pad of the plurality of thermally insulating pads includes a solid compostable panel formed primarily of grain starch that holds together as a single unit, the panel providing a rectangular plate dimensioned to substantially span whichever of the floor, plurality of side walls or cover that the rectangular plate is adjacent, anda water-proof polyethylene film forming a pocket enclosing the panel;wherein at least one of the plurality of thermally insulating pads is a multi-section pad including a plurality of rectangular panel sections enclosed by the film, wherein the multi-section pad is configured to be foldable at a right angle along a boundary between the panel sections and the plurality of rectangular panel sections is dimensioned to substantially span whichever of the floor, plurality of side walls or cover that the plurality of rectangular panel sections is adjacent, and wherein the film provides both an interior surface of the multi-section pad and an exterior surface of the multi-section pad where the pad is folded. 3. The assembly of claim 2, wherein an interior of the pocket is evacuated of air. 4. The assembly of claim 2, wherein the panel is slidable within the pocket. 5. The assembly of claim 2, wherein the polyethylene film is affixed on at least one of an interior surface or exterior surface of the panel by an adhesive. 6. The assembly of claim 2, wherein the at least one of the plurality of thermally insulating pads comprises a score across its width in at least one location on an interior surface of the panel, the score extending partially but not entirely through the thickness of the multi-section panel to divide the panel into the plurality of rectangular panel sections. 7. The assembly of claim 6, wherein the score comprises a compressed portion or a cut out portion of the multi-section body. 8. The assembly of claim 2, wherein the panel of each pad has a uniform homogenous composition. 9. The assembly of claim 2, wherein the plurality of rectangular panel sections are part of a single unitary body. 10. A thermal insulation article for placement in a shipping container to hold an item, comprising: a multi-section thermally insulating pad shaped to be positioned in a cavity of a rectangular prism shipping container to be adjacent to and cover from two to five of out of a floor, four side walls and cover of the container while leaving an interior space to receive the item, wherein the thermally insulating pad includes a plurality of solid compostable panel sections formed primarily of grain starch, each panel section holding together as a single unit, each panel section providing a rectangular plate dimensioned to substantially span whichever of the floor, plurality of side walls or cover that the rectangular plate is adjacent, anda water-proof polyethylene film forming a pocket enclosing the plurality of panel sections;wherein the multi-section thermally insulating pad is configured to be foldable at a right angle along a boundary between the panel sections, and wherein the film provides both an interior surface of the multi-section thermally insulating pad and an exterior surface of the multi-section thermally insulating pad where the multi-section thermally insulating pad is folded. 11. The article of claim 10, wherein an interior of the pocket is evacuated of air. 12. The article of claim 10, wherein the plurality of solid compostable panel sections are slidable within the pocket. 13. The assembly of claim 10, wherein the polyethylene film is affixed on at least one of an interior surface or exterior surface of one or more of the panel sections. 14. The article of claim 10, wherein the plurality of solid compostable panel sections are part of a single unitary body. 15. The article of claim 14, wherein the unitary body comprises a panel having a score across its width in at least one location on an interior surface of the panel, the score extending partially but not entirely through the thickness of the panel to divide the panel into the plurality of panel sections. 16. The article of claim 10, wherein the plurality of solid compostable panel sections each have a thickness between of about ¼ and 1 inch. 17. The article of claim 10, wherein one or more surfaces of one or more of the plurality of solid compostable panel sections are corrugated. 18. The article of claim 10, wherein the multi-section thermally insulating pad includes a plurality of stacked panels.