WO1987001360A1 - Heat-insulated container - Google Patents

Abstract

In order to obtain a heat-insulated container which is capable of being formed into arbitrary outer shape and dimensions, and which has excellent heat insulating characteristics and a high impact resistance, each container wall is made by forming its two surfaces of sheets (1, 2) having a permeability of zero and a high reflectivity, and making the space (4) between these two surfaces vacuous by packing cavity cores (6) to maintain the space in substantially hollow state. This container is utilized as a thermos jug, a cooler box and a refrigerator.

Description

 Specification

 Insulation container

 Technical field

 TECHNICAL FIELD The present invention relates to a cooler box (portable cold storage box) used for thermos, camping, fishing, and the like, and Pururu relates to a small heat insulating or warming container such as a refrigerator compartment of a freezing car.

 Background art

 The most typical shape of a heat insulating or heat retaining container is a thermos bottle in which the inside of a glass bottle with silver-plated inner and outer walls and the space between the outer walls is evacuated. It is known.

 In recent years, stainless steel plates have been used for the inner and outer two-layer walls, and they have been widely used as high-impact, high-temperature heat-insulating containers, mainly as portable heat-insulating water bottles. It has been done.

 Further, according to U.S. Pat. No. 5,828,960 to Dow Chemical Company, one of the hard plastic sheets was metallized with silver brazing metal, The inner and outer two-layer walls are formed by a laminated sheet on which a protective plastic sheet is attached, and the space between the inner and outer walls is evacuated and the remaining gas is absorbed. There has been proposed a heat retaining container in which a gas absorbing member for filling is empty.

For example, cooler boxes used for fishing, camping, etc. For refrigerators in refrigerators, simply low-conductive materials such as styrofoam, foaming foam, etc. The wall was formed with Noga-ta o

 First of all, a glass with a vacuum between the double walls

Bottles have the best insulation or heat retention properties

6 Increased strength of glass itself--Improvement of cushioning material, etc.Damage during normal use in the home has been reduced, but the impact resistance is still poor, and it is still poor for camping and driving.

In particular, the handling of it required careful attention. In addition, if a stainless steel plate is used, it will not be damaged even if it is dropped from a height of 1/15.

The impact resistance has been dramatically improved. But stainless steel

It is not possible to perform deformation to any shape

It was always difficult, and was generally defined as a right circular cylinder, could not meet various shape requirements, and was itself quite summery.

 Therefore, if you walk down the shoulder when you go to hiking, etc., you will hit the hipbone and belly in a reciprocal manner with the movement related to the walking movement, and it becomes ^. However, when the proboscis broke down, it was heavy, and it was probably a problem to use it as a portable device. Further, the thermal insulation container of U.S. Pat.

* Although it can be formed to any desired dimension, if the space between the double wall structures is evacuated, the gas absorbing member must be filled in that space at the time of the circumference, and a special mechanical device it is necessary for that purpose What you do. In addition, the space is filled with a solid gas absorbing member. As a result, heat conduction was performed through the member, and the heat insulation or heat retention effect was significantly reduced.

 Disclosure of the invention

 Accordingly, the present invention is to eliminate the drawbacks of the prior art as described above, by forming a two-sided sheet with a permeable and “0” and highly reflective sheet, The space between the surfaces is supported by a substantially hollow body. By forming a vacuum state by interposing a hollow core in the space, it has excellent heat insulating or heat insulating properties, and has impact resistance. It is an object of the present invention to provide a heat retaining container which can be formed into a shape having a high size and an arbitrary size, and which can change its acceptable capacity in accordance with the amount of contents, and which can be changed into an outer shape as required.

 The heat insulation container according to the present invention is characterized in that the walls of the container for keeping the contents in a cut-off state have a pair of walls facing each other. 0 '' inner surface and outer surface sheet, and inner surface and outer surface sheet To make the closed cavity a vacuum.

The heat retaining container 1 of the present invention is to maintain the heat insulating property between the inside and the outside of the container by the above-mentioned means, and the wall of the container is separated from the inner surface of the transparent “0” and the outer surface. The enclosed space between the sheets is evacuated, and the spacing between the inner and outer sheets is maintained by a core that works like a spacer. Therefore, "When one chain space is evacuated, It is unlikely that the sheets will be close or in contact with each other to reduce or “0” the vacuum space. Also, the core has many cavities.] In order to increase the volume of space that can be evacuated, the amount of heat transfer between the inside and outside of the container transmitted through the core is minimized. I do.

 In addition, the inner and outer sheets have high reflectivity, which further prevents the heat convection and the deterioration of the heat retaining ability due to the transfer of heat.

 Also, at least one of each sheet core is formed to be rigid, so that each sheet core forms a fixed outer shape container. Having flexibility, it can be transformed into a container of the size corresponding to the amount of contents to be received, and it can be shaped into a shape corresponding to the place where the container is to be stored, such as when holding a pot or holding a lotus. Change.

 BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is a diagram showing the heat retention container according to the present invention. Sections 2 and 3 are partially enlarged views showing the components of the container wall shown in Fig. 1, respectively. The fourth is a partially cutaway perspective view showing an example of a heat retaining container formed by the self-destructing vacuum packaging machine according to the present invention. FIG. 5 is a partially cutaway perspective view showing a cooler box-shaped heat insulation container according to the present invention. FIG. 5 is a partially enlarged cross-sectional view showing a portion of the container shown in FIG. Fig. 7 shows an example of a thermal insulation container having a flexible wall.

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 is a view showing an embodiment of the present invention, in which an inner sheet 1 for receiving the contents ^ is provided with a required space between the inner sheet 1 and the outer surface of the inner sheet 1. The outer sheet 2 and the opening 5 of the outer sheet 5 are continuously connected. As a result, a closed space 4 is formed between the sheets 1 and 2. The closed space 4 is provided with a core having as many cavities 5 as possible while maintaining the separation between the sheets 1 and 2, and the closed space 4 is kept in a vacuum state.

 The inner and outer sheets 1 and 2 are formed of a permeable “0” sheet material used for vacuum packaging of coffee beans and the like. More preferably, each sheet has high reflectivity, and a metal material 7 such as aluminum or silver is plated or vapor-deposited on a transparent film 8 made of synthetic resin. It is formed of a sheet material (see FIG. 3) in which a metal foil 9 such as aluminum tin is laminated on a transparent film 8 made of synthetic resin. At this time, the plated or vapor-deposited metal 7 or gold 9 should be prevented from being damaged due to external factors, and at least the outer surface of the metal 7 or gold, such as a mirror, should be used. It is preferable that another transparent film 10 made of a synthetic resin be laminated.

The core provided in the enclosed space 4 has as many cavities 5 as possible, and maintains a space between the inner surface and the outer sheet 1 and 2 under the vacuum state of the enclosed space 4. It is used as a spacer, and is preferably formed of a heat conductive material. One of the members that can respond to such demands As an example, of § main States Konechika' door Carolina ^{No rfie ld C o rpr at i} on Co., Ltd. "Uo rcore [Sho檫)" mosquito Aru. This is a sheet or panel formed of ABS resin, thermoplastic resin such as polycarbonate, honeycomb, spider's nest, ant's nest, or hollow internal structure. At this time, when the closed space 4 is evacuated to a vacuum state, the air in all the cavities 5 is exhausted once or at a suitable place. You will be overtaken by doing some work, and you will be connected to each other.

 The closed space around the container opening 3 is provided with a screw cap (not shown), a thread (11), and a form that can be frictionally engaged (not shown). It is solid to form. This solid part 0 can be formed separately by preparing a part formed separately and in a predetermined shape of the solid part, but it is also possible to form a solid part around the opening part when molding the core. Forming is convenient in terms of manufacturing.

 The inner and outer sheets 1 and 2 can be formed using a well-known vacuum bag making machine. Also, a core 6 is installed between the sheets 1 and 2 to create a vacuum. A well-known vacuum packaging machine for forming the closed space 4 can be achieved by slightly changing the design. Ο Fig. 4 shows an example of the basic shape of the heat retaining container formed thereby.

The joint surface between each sheet 1 and 2 and the core 「 However, it is not always necessary to apply a bonding means between the joining surfaces. However, the container itself is distorted. The container may be misaligned with each other due to power from the inside and outside of the container. In order to avoid a fear, it is preferable to perform heat fusion.

 FIG. 5 shows a cooler box-shaped heat insulation container according to another embodiment of the present invention. The wall of the box 13 is formed in the same manner as described above with a ¾ cored wall structure, and the wall of the lid 13 is similarly formed. When the lid 15 is connected to the box 12 in the form of a ledge, as shown in Fig. 6, the inner sheet of the body 12 and the lid 13 is connected to the connecting portion 14 1 and the outer sheet 2 can be connected to each other, and the connecting portion 14 can be formed without forming a core.

Here, in the case where the cooler box is formed of a large-sized form such as a luggage compartment of a freezer truck, etc., as shown in FIG. Behind the above, a sheet-like barking heat member provided with a pair of sheets 1 and 2 and a core as described above is attached, and the inside of the wall is formed in a closed space. In addition, a core 6 similar to the core 6 having a large number of cavities 5α is provided to make a vacuum state. Accordingly, the five layers of vacuum space are located around the container, so that the heat insulation and heat retention characteristics of the container can be reliably maintained. However, if the bonding between the panel 15 and the sheet-like heat-generating member is ensured, it is not necessary to provide the core 0, and the closed hollow body is kept in a vacuum state. Is especially good for heat conduction Provides heat insulation.

 In each of the embodiments described above, no mention was made of the rigidity of the wall of the container composed of the inner and outer sheets and the core. However, by adding flexibility to the wall, and in practice, both sheets have sufficient flexibility, so by adding flexibility to the core, The container is deformed according to the amount of contents divided by the storage location of the container (see Fig. 7).

 As described above, in the present invention, a core having many cavities functioning like a spacer is provided in a closed space between permeable “0” sheet surfaces, and air in the cavities is ventilated. Since it can form the walls of the container in a vacuum state, it can possess sufficient new thermal characteristics.

 In addition, each sheet is formed with a synthetic resin film, and a core is formed in a shape such as a nest of ridges with a synthetic resin. It can be formed into any shape such as a water bottle, an upper bot, a cooler box, etc. ο

 Metal foil coating or plating film is applied to the inner and outer sheets by using a metal foil laminated film.Each sheet can have high reflectivity, and accordingly, the insulation properties can be improved. It can be further improved.

In addition, by forming the sheet sheets and cores that form the walls of the container with a flexible material, the shape of the container itself can be deformed, and the contents of the container can be changed ^ According to the quantity of The container can be stored in any place, and the contents are always received in a state filled with the container, so that the heat retention of the container can be further improved.

 In addition, in the manufacture of containers, it is possible to easily and continuously produce a container by applying a small design change to a well-known automatic vacuum packaging machine, which is suitable for mass production. In addition, it can provide an inexpensive heat insulation container.

 Industrial applicability

 The present invention can be applied not only to a heat retaining container, but also to a heat insulating plate by forming a wall formed of a combination of an inner and outer sheet and a core into a flat plate shape, and to provide flexibility. It can be used as a heat insulation sheet.] 9, for example, it is widely used in cold storage rooms, insulation walls such as freezing warehouses, tents, camping sheets, etc. What you can do.

Claims

The scope of the claims  (1) A container for keeping the contents warm in an insulated state.The walls of the container are spaced apart from each other and form a closed space (4) between them. A number of cavities (5) provided in the enclosed space (4) between the inner and outer sheets (1, 2) of "0" and the inner and outer sheets (1, 2) A heat retaining container comprising: a core (6) having a core (6), wherein air in the cavity (5) of the core (6) is exhausted to make the closed space (4) vacuum. (2) The container according to claim S, wherein the inner and outer sheets (1, 2) are formed of a sheet material having high reflectivity.  (3) The ratio of the occupation volume of the core (6) to the closed space (1) (4) is small enough to hold at least the closed space (4) under vacuum. The container according to claim 1 or 2, wherein the valley cavity (5) of (16) is formed in one cavity shape communicating with each other.  (4) At least one of the inner sheet (1), the outer sheet (2) and the core (6) that forms the groove of the container is sufficient to hold the container 4. The container according to claim 1, wherein the container has rigidity. (5) Claims in which the inner wall (1), the outer sheet (2) and the wall of the container from the core (6) have porosity. A container according to item 2 or 3.