JPH072276U - Insulation bag for packaging - Google Patents

Abstract

(57) [Summary] [Purpose] Cooling. The present invention relates to a heat insulating bag for packaging, which can be made with a heat insulating sheet that can be used for both heat retention. [Structure] A film made by mixing diatomaceous earth with a synthetic resin film molding resin or. A heat-insulating film coated with a paint that mixes diatomists. A heat-insulating bag for packaging, which comprises a heat-insulating sheet that is formed by sticking to a bubble sheet for packaging.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is. Involved in a heat insulating bag for packaging. For more details. It relates to a packaging bag made up of a sheet-shaped heat insulating material that can be used both for keeping cold and for keeping warm.

[0002]

[Prior art]

 As a heat insulating bag for packaging. Is a urethane sheet or aluminum foil attached to it? Alternatively, it is already known that aluminum vapor deposition is used.

A conventional heat insulating bag of this type is. There is a problem in terms of keeping cold. Also. The Styrofoam case that is widely used is. There are many problems in terms of treatment after use, storage space, and transportation cost.

Inexpensive and not bulky. Materials with higher persistence are desired.

[0005]

[Problems to be solved by the device]

 The present invention is. It was made in view of such problems. Keep cool. It has long-lasting heat retention and can be used at low cost. It is intended to provide a heat insulating bag for packaging that is constructed with a new sheet-shaped heat insulating material that does not take up storage space.

[0006]

[Means for Solving the Problems]

 The above problems are. It is solved by the following means.

A heat insulating film in which diatomaceous earth is mixed with a synthetic resin film molding resin. A heat insulating sheet is constructed by pasting it onto the air bubble sheet for packaging. Whether to make bags with the heat insulating sheet or. For film materials such as synthetic resin film and paper. Bags were made with an insulating sheet that was coated with a mixture of diatomaceous earth and attached to an air bubble sheet. It can be used for packaging foods that need to be kept cold and warm.

[0008]

[Action]

 As is well known, diatomaceous earth is porous and has a high porosity. High heat insulation. If the fine powder is used as an additive for improving the heat insulating property when forming a heat insulating sheet, it has the effect of improving the heat insulating property. Make a bag with the heat insulating sheet. If it is used for packaging, it is possible to maintain the necessary and sufficient cold and heat retention duration. When using. Chilled food. When transporting frozen foods and products that require temperature control. Would you like to package the product with a cool material? or. To prevent the rapid release of cold air from the heat insulating material. Wrap the cold insulating material itself with the heat insulating sheet of the present invention. Place in a package for shipping with the product.

[0009]

【Example】

 The present invention will be described by way of examples. Example 1 As shown in FIG. 50 g of water-based paint. Mix 5 g of diatomaceous earth powder. Add 3 cc of water and stir. A heat insulating sheet for packaging was created by applying it to one side of a commercially available air bubble sheet for packaging. next. To evaluate the ability as a heat insulating material. The heat insulating sheet constitutes a packaging bag. 500g of frozen oysters. It put in the said heat insulation bag together with 500 g of a commercially available ice pack, and measured the inside temperature continuously. As a comparative material, have a commercially available urethane foil bag with one side covered with aluminum foil. In the same way, wrap 500g of frozen oysters with 500g of frozen ice pack. The inside temperature was measured continuously. For freezing the commercial materials used in the experiment. The freezer of a domestic refrigerator was used. What is the temperature in the freezer? It is -5 degrees C. Freezing time is. 12 hours. Also. What is the room temperature in the laboratory? It was 14 to 15 degrees C.

[0010]

[Table 1]

Example 2 In order to evaluate the ability as a heat insulating material. A heat insulating bag for packaging is constructed by using the heat insulating sheet for packaging of the present invention shown in FIG. Enclose 300 g of a commercially available ice pack that has been frozen for 12 hours and put it in a Styrofoam box. I saw the temperature change in the box. As a heat insulating bag for comparison. With an air bubble sheet of the same standard as that used in the present invention of Example 2. Wrap 300 g of commercially available cold insulation material frozen for 12 hours. Put it in a styrofoam box of the same standard. I saw the temperature change in the box. The temperature inside these two boxes is. The time lapse until it became the same as room temperature was measured.

[0012]

[Table 2]

Example 3 Ability as a heat insulating material. For comparison with the Styrofoam case. With the laminated heat insulating sheet of the invention shown in FIG. 3, a packaging bag laminated with an outer aluminum foil was formed, and 200 g of ice blocks were enclosed in the packaging bag. The thickness of this insulation sheet is. It was 10 mm. Also. The styrofoam case for comparison is. The outer diameter was 200 mm in length, 235 mm in width, 125 mm in height, and 25 mm in thickness. In that case. Similarly, 200 g of ice blocks were enclosed. The above two materials. One hour in direct sunlight with an ambient temperature of 27 degrees Celsius. 1 hour in a room at room temperature of 17 degrees Celsius. Place in a passenger car with a temperature of 30 to 38 degrees Celsius for 4 hours. Weighing each ice block after 6 hours. The results shown in Table 3 were obtained.

[0014]

[Table 3]

[Effect of device]

 The present invention is as described in detail above. The heat insulation effect is greater than that of the conventional product, and it is seen from the duration. It is possible to expect an effect of 150% or more. If the product becomes popular. Due to pollution problems in recent years, it can be expected to make a considerable contribution to solving post-use treatment problems, storage space, and transportation cost problems of Styrofoam cases that are widely used as heat insulating materials.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view illustrating the structure of a heat insulating sheet that constitutes a heat insulating bag for packaging during mass production according to the first embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view illustrating the structure of the heat insulating sheet that constitutes the heat insulating bag for packaging according to the first and second embodiments of the present invention.

FIG. 3 is an enlarged cross-sectional view illustrating the structure of a heat insulating sheet that constitutes the heat insulating bag for packaging according to the third embodiment of the present invention.

FIG. 4 is an overall view of a heat insulating bag for packaging showing an embodiment of the present invention.

[Explanation of symbols]

1 is a synthetic resin film mixed with diatomist. 2 is an air bubble sheet for packaging. 3 is a heat insulating film coated with a paint mixed with diatomaceous earth. 4 is aluminum foil. 5 is a protective sheet. 6 is a main body showing an example of a heat insulating bag for packaging. 7 is a heat insulating sheet. 8 is an adhesive band for closing the heat insulating bag for packaging.

Claims (6)

[Scope of utility model registration request] 1. A synthetic resin film comprising a synthetic resin film molding resin mixed with diatomaceous earth. A heat-insulating bag for packaging, comprising a heat-insulating sheet that can be laminated on an air bubble sheet. 2. A heat-insulating bag for packaging on at least one side. The heat insulating bag for packaging according to claim 1, wherein a protective sheet for maintaining strength is laminated. 3. On at least one side of a heat insulating bag for packaging. The heat insulating bag for packaging according to claim 1, wherein an aluminum foil for blocking direct sunlight is laminated. 4. A film material. Membrane material formed by applying a coating material mixed with diatomaceous earth. A heat-insulating bag for packaging, characterized by comprising a heat-insulating sheet that can be laminated on an air bubble sheet. . 5. At least one side of a heat insulating bag for packaging. The heat insulating bag for packaging according to claim 4, wherein a protective sheet for maintaining strength is laminated. 6. On at least one side of a packaging insulating bag. The heat insulating bag for packaging according to claim 4, wherein an aluminum film for blocking direct sunlight is laminated.