Insulated structure

Abstract

The present invention provides a thermal insulation structure that is placed inside a bag for use. [Solution] The bag comprises a bottom plate 2, side plates 5, and a top plate 4 made of plate-shaped insulating material. At least a portion of these is formed as a single plate-shaped member with multiple continuous planes. This plate-shaped member is folded and arranged along folding lines, and a cooling and heating space is formed inside the bag by placement without the use of a fixing mechanism. Compared to general insulated bags, it has good insulation performance, excellent heat shielding properties in the cooling and heating space, and can suppress temperature changes of the contents. Existing insulated bags have insufficient insulation performance, and polystyrene insulated boxes have the problem of being bulky when stored. Furthermore, there was a need for a material that could be used in conjunction with existing bags and that achieved both cooling and heating performance and space saving.

Description

Technical Field

[0001] The present invention relates to a cold and heat insulation structure disposed and used inside a bag body.

Background Art

[0002] Conventionally, in taking home food or short-distance transportation, cold and heat insulation bags using aluminum vapor-deposited films or the like, and cold and heat insulation boxes made of foamed styrene have been widely used.

[0003] However, the former cold and heat insulation bag has a problem that its cold and heat insulation performance is not sufficient and the temperature change of the contents cannot be sufficiently suppressed. On the other hand, the latter cold and heat insulation box made of foamed styrene is excellent in cold and heat insulation performance, but has a problem that it is bulky during storage and transportation due to its three-dimensional shape, and significantly reduces the storage efficiency in stores and logistics bases.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention uses a plate-shaped extruded foam having anisotropy and flexibility made of a raw material containing polypropylene and industrial starch, and uses a foamed heat insulating member having a bending structure, which was difficult to manufacture with conventional foamed styrene or the like, as the main constituent material. While maintaining the cold and heat insulation performance, it enables space saving during storage and transportation, and provides a cold and heat insulation structure that can be configured in any dimensions according to the shape and inner dimensions of the bag body.

Means for Solving the Problems

[0005] The thermal insulation structure in this invention consists of a plate-shaped insulating material and is configured to include at least a portion of an integral plate-shaped member (also called a continuous component member) in which multiple planes are continuous. The integral plate-shaped member is formed in one of the following shapes: a U-shape with three orthogonal planes continuous, an L-shape with two orthogonal planes continuous, or a square shape with four orthogonal planes continuous. The integral plate-shaped member is formed from a single plate material having a folding line (also called a folding curve), and when in use, it is folded along the folding line to be arranged in the U-shape, L-shape, or square shape. Furthermore, the thermal insulation structure is formed by combining the integrated plate-shaped member with plate-shaped members (also referred to as constituent members consisting of only one plane) that constitute a top plate and a bottom plate, etc., as needed, and these members are arranged without any fixing mechanism to each other. [Effects of the Invention]

[0006] According to this invention, the bottom plate, side plate, and top plate, which are made of plate-shaped insulating material, are combined and arranged without using a fixing mechanism to each other, so that a cooling and warming space can be formed with simple assembly work. Furthermore, since at least a part of the bottom plate, side plate, and top plate is made of a single plate-shaped member with multiple continuous planes, and the plate-shaped member is used by folding it along the folding lines, it has better insulation performance compared to general cooling and warming bags, has excellent heat shielding properties for the cooling and warming space, and can suppress temperature changes of the contents. Furthermore, during transportation or storage, the components can be stored in a flat, unfolded state, significantly reducing storage space. In addition, the dimensions of the insulation material and the position of the folding lines can be changed according to the internal dimensions of the bag, allowing it to accommodate bags of any size. [Brief explanation of the drawing]

[0007] [Figure 1] This figure shows a U-shaped type, which is one embodiment of the cooling and heat retention structure of the present invention. [Figure 2] This figure shows an L-shaped type, which is one embodiment of the cooling and heating structure of the present invention. [Figure 3] This figure shows a body-wrap type (also called a square type) which is one embodiment of the thermal insulation structure of the present invention. [Figure 4] This diagram shows the bag body with the bottom plate 2, the square-shaped plate member 5, and the top plate 4 incorporated into it. It is shown as one example of three types. [Modes for carrying out the invention]

[0008] Embodiments of the present invention will be described below with reference to the drawings. [Examples]

[0009] The thermal insulation structure according to this embodiment comprises a bottom plate, side plates, and a top plate made of plate-shaped insulating material, and by combining these, a thermal insulation space is formed inside the bag that surrounds the stored items. The bottom plate, side plates, and top plate are all made of extruded foam made from polypropylene and industrial starch as described in claim 1. In the U-shaped embodiment shown in Figure 1, two U-shaped plate-like members, each with three continuous orthogonal planes, are used and combined to form the cooling and heating space. The U-shaped plate-like members are formed from a single sheet of material with folding lines, and are folded and positioned when in use. In the L-shaped embodiment shown in Figure 2, the cooling and heating space is formed by combining two L-shaped plate members, each having two continuous orthogonal planes, and plate members that constitute the top and bottom plates. Each of the L-shaped plate members is formed from a single sheet of material with a folding line, and is folded and positioned when in use. In the rectangular (also called a body-wrap type) embodiment shown in Figure 3, a single rectangular plate-like member with four continuous orthogonal planes, and plate-like members constituting the top and bottom plates are used, and the aforementioned cooling and heating space is formed by combining these. The rectangular plate-like member is formed from a single sheet of material having three folding lines, and is folded along the folding lines when in use. Furthermore, the bottom plate, side plate, and top plate are formed to dimensions corresponding to the internal dimensions of the bag being used, and can accommodate bag bodies of any size by changing the position of the folding lines. [Industrial applicability]

[0010] This invention can be widely used for take-out and short-distance transport of food, frozen desserts, etc., as well as for simple cooling and heating applications in the cold chain. [Explanation of symbols]

[0011] 1. A U-shaped plate-like member (which forms the side plate and is integrated with the bottom plate or top plate) 2 Bottom plate 3. L-shaped plate-like member (constitutes the side plate) 4 Top plate 5. A rectangular plate-like member (which constitutes the side plate)

Claims

1. A cooling and heat retention structure placed inside a bag having a rectangular inner bottom surface, The aforementioned cooling and heating structure is It consists of a bottom plate, side plates, and a top plate made of plate-shaped insulating material. It consists of a rectangular parallelepiped having the following features: The bottom plate portion is in contact with the inner bottom surface of the bag body and is in line contact with or in contact with each of the four inner surfaces of the bag body that rise continuously from the inner bottom surface of the bag body. The side plate portion is in contact with the inner surface of the bag body, The top plate portion is in line with or in contact with each of the four inner surfaces of the bag body. The rectangular parallelepiped component made of the plate-shaped insulating material is configured to include at least one continuous component in which two to four orthogonal planes of the rectangular parallelepiped are continuous, When the aforementioned components are laid out on a plane, all of the aforementioned components have a rectangular shape. The rectangular parallelepiped is assembled by arranging two to four of the aforementioned components without a fixing mechanism. The aforementioned heat insulating material is made by heating and mixing raw materials, including polypropylene and industrial starch, using an extruder. An anisotropic extruded foam formed by a strand die having numerous small pores, The folding curves defining the two to four orthogonal surfaces in the continuous component are arranged to be perpendicular to the extrusion direction of the extruded foam. A structure for keeping food cool or hot.

2. The thermal insulation structure according to claim 1, which is assembled by combining two of the U-shaped continuous structural members formed by connecting three orthogonal planes out of the six planes of the rectangular parallelepiped.

3. Two L-shaped continuous structural members are formed by connecting two orthogonal planes of the six planes of the rectangular parallelepiped, The thermal insulation structure according to claim 1, which is assembled by combining two of the aforementioned constituent members, each consisting of only one plane.

4. The thermal insulation structure according to claim 1, which is assembled by combining one continuous component in the shape of a square, formed by connecting four orthogonal planes out of the six planes of the rectangular parallelepiped, and two components consisting of only one plane.

5. The thermal insulation structure according to claim 1, which is assembled by combining one U-shaped continuous component made up of three orthogonal planes from the six planes of the rectangular parallelepiped, one L-shaped continuous component made up of two orthogonal planes, and one component made up of only one plane.

6. A bag for keeping food cold or hot, with the structure described in any one of claims 1 to 5 arranged inside.

Images