JPS6160418A - Method of packaging heat-insulating material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (3-1) Industrial Field of Application The present invention applies to insulation materials such as glass wool and rock wool that contain a large amount of air and therefore have a very small apparent specific gravity using a vacuum packaging machine. The present invention relates to a method of packaging a heat insulating material, which increases its apparent specific gravity by more than 10 times, thereby significantly reducing transportation costs.

(3-2) Almost all conventional technology insulation materials contain a large amount of air inside, and their performance depends on the insulation properties of the air.
Naturally, its apparent specific gravity is extremely small, and its large volume increases transportation costs.

Among these insulation materials, apart from those that are non-deformable such as foam glass, those that are deformable such as rock wool and glass wool compensate for the above disadvantages.
When packing, products are compressed to reduce their volume using methods such as hanging bands, but this has the disadvantage that if they are compressed for too long, they will not recover.

For example, if the volume is compressed to 115 mm by hanging a glass wool band, the warranty period for restoring it to its original shape is 2 months.

(3-3) Problems to be solved by the invention. The present invention eliminates the drawbacks of the conventional packaging method for insulation materials as described above,
The aim is to provide a packaging method that significantly reduces the volume and reduces transportation * while also ensuring that the product is restored to its original shape.

(3-4) Means for solving the problem and its effect The present invention is based on the phenomenon that the volume of deformable heat insulating materials such as rock cool and glass wool decreases drastically under vacuum, and that it cannot be restored using conventional methods. is due to an extremely large external pressure acting in part, and that the external pressure acting in a vacuum is average and at most 1 k.
! The above-mentioned problems were solved by vacuum packing the insulation material in an airtight plastic bag. There is.

The packaging method according to the present invention will be explained step by step based on the diagrams shown in FIGS. 1(A) to 1(C).

(a) A heat insulating material 1 such as a glass bag is inserted into a plastic bag 2 (see figure (a)). This bag 2 is required to be made of a material with high durability, and it is necessary that the bag 1 will not be damaged even if the bag is handled roughly to some extent.

For this purpose, a composite film using nylon for the outer layer and polyethylene for the inner layer may be used.

(A) Next, the bag 2 containing the heat insulating material 1 is attached to a vacuum packaging machine 3, and the air inside is removed (see figure (B)). The vacuum packaging machine 3 (only the main parts are shown in the figure) has a sealing part 3A, a vacuum nozzle 3B, and a vacuum nozzle 3.
It consists of a vacuum pump 3C connected to B, etc.
It can be used by adding appropriate improvements to vacuum packaging machines or gas-filled packaging machines that are commercially available for food products. The air is removed from the opening of the bag 2 (the vacuum nozzle 3B is inserted thereinto, and after the opening is covered by three sealers, the vacuum pump 3C is activated).

(c) When the volume of the bag 2 containing the heat insulating material 1 is sufficiently reduced, the vacuum nozzle 3B is removed and the opening of the bag 2 is heat-sealed by the sealing part 3A (see figure (c)).

This concludes the packaging of the insulation material 1, but by removing the air inside the insulation material 1, the volume of the insulation material 1 is greatly reduced, and when it is used, when the bag 2 is torn, the air is returned to Vftft.
The heat insulating material 1 can be easily restored to its original shape by penetrating into the interior of the heating material.

(3-5) Example The packaging method according to the present invention was applied to a glass school, and the following good results were obtained.

(1) Insulation material used: Glass cool.

Specific gravity Lid: 20 Cky/m (2) Plastic bags used: Outer layer nylon, inner layer modified polyethylene co-extruded film Thickness: 80 μ (3) Specific gravity ft after packaging: 200 K1 pack 3
Volume reduction rate: 10 (4) Elapsed time after packaging until unpacking: 10 months Required time for restoration: 2 minutes or more The example describes a glass school, but the method according to the present invention describes a glass school. Of course, it can also be effectively applied to heat insulating materials.

(3-6) Effects of the Invention The present invention has the following excellent effects by providing a method for vacuum packing a heat insulating material such as a glass bag inside a plastic bag. be.

(1) Transportation costs can be reduced by greatly reducing the volume of the heat insulating material.

(2) It can be stored in a packaged state for a long period of time.
The cost required for saving FFK can be drastically reduced.

(3) Therefore, the cost of insulation work can be greatly reduced.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1(a) and 1(c) are diagrams showing step-by-step a method for packing a heat insulating material according to the present invention.

Claims (1)

[Claims] A method for packing a heat insulating material, which is carried out according to the steps shown in the following (a) to (c). (a) Inserting the insulation material into an airtight plastic bag (b) Inhaling and expelling the air inside using a vacuum packaging machine through the opening of the plastic bag containing the insulation material (c) The opening is heat-sealed by the vacuum packaging machine.