KR100634573B1 - Method for preparing regular-shaped insulation - Google Patents

Abstract

In the shaped body accommodated in the outer package of the heat insulating material, a stable shaped body is obtained without deteriorating the heat insulating performance without applying the binder or firing treatment.

The core 5 of the glass wool and the inner pack 3 as a sheet member which can accommodate and hold the core 2 in a compressed state constitute a shape 5 of the vacuum insulator 1. Since the inner pack 3 accommodates the core 2 and keeps it in a compressed state, there is no need to apply a binder to the core 2 or perform a sintering process, and a stable shaped body 5 can be obtained in a short time. . In addition, problems in productivity and environment can be eliminated. In addition, since nothing is added to the core material 2, the extremely excellent heat insulation performance as a glass wool single body can be maintained.

Vacuum Insulation Material (Insulation Material), Core Material, Inner Pack (Sheet Material), Form

Description

METHODS FOR PREPARING REGULAR-SHAPED INSULATION}

1 is an exploded perspective view of a vacuum insulator in a preferred embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a periphery of a core material before compression is covered with an inner pack in the vacuum insulator of FIG. 1.

Figure 3 is a longitudinal cross-sectional view of the folded state of the edge while compressing the core material in the vacuum insulating material of FIG.

4 is a longitudinal cross-sectional view of a state in which a sealing portion is formed at an edge portion while compressing the core material in the vacuum insulating material of FIG. 1.

FIG. 5 is a longitudinal cross-sectional view showing a state after compressing a core in the vacuum insulator of FIG. 1. FIG.

** Description of symbols for the main parts of the drawing **

1 Vacuum Insulation Material

2 heartwood

3 inner pack (sheet material)

5 conformation

The present invention relates to a shape of a heat insulating material which is stored in a vacuum state inside the exterior body having a gas barrier property, for example, and a method of manufacturing the same.

 In recent years, household appliances such as refrigerators and cooking appliances are required to save energy from consumers. In order to meet such a demand, the high performance vacuum insulator is used inside the main body of home appliances.

 The vacuum insulator comprises, for example, glass wool as a core material and a package for wrapping the glass wool in a vacuum state, as disclosed in JP-A-2003-269689. The exterior body here may have any gas barrier property, and any material can be used as long as the core material can be accommodated and the inside can be kept in a vacuum. Preferably, for example, a lamination of a plastic film or the like deposited on a surface of a metal such as aluminum, for example. A band is used.

By the way, the glass wool for vacuum insulation material used as a core material has the advantage that there is no generation | occurrence | production of outgass, such as a foam, since heat insulation performance is extremely excellent and it is breathable. On the other hand, glass wool has a low specific gravity (density), and in that state, the glass wool cannot be stored in the bag-like exterior body at the time of manufacture, or finally, a plate-shaped heat insulating material cannot be obtained.

Thus, conventionally, after applying an inorganic binder or an organic binder to glass wool, the glass wool is fired in a pressed state, and the binder is solidified to form a molded article made by keeping the glass wool in a compressed state. This shaping body has a shaping | molding shape which can be accommodated easily in the said exterior body, and can improve the workability | operation after that significantly.

Attempts have been made to greatly improve the handleability at the time of manufacture of a molded article having a high density of glass wool as described above, but there is a big problem in terms of productivity and environment.

  In other words, when the binder is applied to the glass wool from the environmental point of view, the atmosphere of the workplace is deteriorated, and treatment of insoluble matters is required. In addition, a lot of heat is generated during subsequent firing, leading to energy loss. In terms of productivity, since an inorganic binder or an organic binder is applied, and a firing treatment is performed to produce a molded body, a large amount of facility investment is required in each of these steps. Moreover, since an inorganic binder or an organic binder is added as a regular form, the extremely excellent heat insulation performance which glass wool single body has may deteriorate, and subsequent baking may take time.

 Accordingly, in view of the above problems, the present invention can provide a stable molded body in a short time without applying a binder or firing treatment, and in addition provide a molded body of a heat insulating material that does not deteriorate its heat insulating performance and a method of manufacturing the same. For the purpose of

Since the sheet member can store the core member in a compressed state in place of a conventional inorganic binder or an organic binder in the form of the heat insulating material according to the first aspect of the present invention, it is necessary to apply a binder to the core material or perform a calcination treatment. It is possible to obtain a stable shaped body in a short time and eliminate problems in productivity and environment. In addition, since nothing, including a binder, is added to the core material itself, it is possible to maintain extremely excellent heat insulating performance as the glass wool alone.

Moreover, since the thickness of the sheet | seat material is 0.05 mm or less, since the regular body of the heat insulating material which concerns on the 2nd aspect of this invention is a workability at the time of making a sheet material into a bag shape, and when sealing the opening part of a sheet material, Can improve the workability.

In the manufacturing method of the insulating material form of the heat insulating material of Claim 3, since the sheet material accommodates a core material and keeps it in compression shape instead of the conventional inorganic binder or organic binder, there is no need to apply a binder to a core material, or to perform baking processing at all. It is possible to obtain a stable shaped body in a short time, and to eliminate problems in productivity and environment. In addition, since nothing is added to the core material itself, including a binder, it is possible to maintain an extremely excellent heat insulating performance as a glass wool alone.

EXAMPLE

Hereinafter, with reference to the accompanying drawings, it will be described a preferred embodiment of the vacuum insulator in the present invention.

First, the structure in the completed state of a heat insulating material is demonstrated based on FIG. In Fig. 1, reference numeral 1 denotes a flat vacuum insulating material, for example, installed in a refrigerator, a cooking appliance, or the like, which is made of a core material 2 made of a glass wool for vacuum insulation having abundant elasticity, It consists of the inner pack 3 as a sheet material which accommodates this core material 2, and the barrier material 4 as an exterior body which wraps these core material 2 and the inner pack 3 in a vacuum state. do. Note that the core material 2 does not contain an inorganic binder or an organic binder as in the prior art and is composed of glass wool alone. On the other hand, the barrier material 4 before packaging is formed in the shape of the bag which opened only one side, and the regular body 5 which accommodated the core material 2 in the compressed state in the inner pack 3 from this opening part (not shown) is carried out. (See Figure 4) is inserted and sealed. As long as the barrier material 4 has a gas barrier property, and the core material 2 and the inner pack 3 can be accommodated and the inside can be kept in a vacuum, any barrier material may be used. For example, a metal such as aluminum may be applied to the surface. A lamination table such as a deposited plastic film is used.

Next, the manufacturing process of the said vacuum heat insulating material 1 is demonstrated, referring FIGS. 2 shows a state where the core 2 before compression is wrapped in the inner pack 3. The core 2 at this time is preferably a glass wool for vacuum insulation material having a coating weight of 1400 g / m ² and an average fiber diameter of 3.5 μm or less. In addition, the thickness t1 of the core material 2 before wrapping it in the inner pack 3 is about 150-250 mm (preferably 200 mm). On the other hand, the inner pack 3 enclosing the core material 2 maintains sealability, heat resistance and durability (cost-effectiveness of cutting) in each manufacturing process until inserting the body 5 described later into the barrier material 4. The materials that can be selected are selected. Specifically, as the material of the inner pack 3, it is preferable to select a polypropylene resin or a polyethylene resin that satisfies these requirements. The thickness of the inner pack 3 is such that the workability at the time of forming the inner pack 3 into a bag or the vacuum of the inside of the inner pack 3 can be sealed to seal the opening of the inner pack 3. In consideration of workability at the time and the like, the one having 0.05 mm or less is selected.

First, in the step of covering the core 2 with the inner pack 3, the core 2 is placed on one side portion 3A of the inner pack 3 forming a rectangular sheet shape cut to a predetermined dimension, as shown in FIG. Similarly, the intermediate portion 3B is folded to sandwich the core 2 so that one side portion 3A of the inner pack 3 and the other side portion 3C are opposed to each other.

Next, the process of forming the inner pack 3 into a bag shape is performed. Here, as shown in FIG. 3, the edge portion 3D on the left and right sides of the one side portion 3A and the other side portion 3C of the inner pack 3 is compressed while compressing the core member 2 with a press machine or the like not shown. What is necessary is just to seal by heat-sealing edge part 3D formed in 3 A of one side part, and 3 C of other side parts of the inner pack 3 after folding. Thereby, the inner pack 3 is formed in the shape of the bag which opened only the front side. 4 shows a state in which a sealing portion 7 for sealing the edge portion 3D is provided in the edge portion 3D.

In addition, in the state of FIG. 4, the edge portion 3D on the left side of the inner pack 3 and the other edge portion (not shown) on the front side are overlapped, and the portion is sealed with the sealing portion 7 (in this case, the inner portion). The opening is formed on the right side of the pack 3), the edge 3D on the right side of the inner pack 3 and the other edge on the front side are folded and folded, and this part is sealed by the sealing part 7 You may also In any case, the sealing portion 7 is installed in a straight line from the end of the edge portion 3D to the end so as to reliably seal the entire edge portion 3D. Further, the reason for sealing the edge portion 3D while compressing the core 2 is that one side portion 3A of the inner pack 3 is in the state of the core 2 before compression due to the thickness t1 of the core 2. This is because it is difficult to overlap each edge portion 3D of the other side portion 3C.

Next, the process of shaping the core material 2 is demonstrated. Here, after compressing the core material 2 to the shape shape using the press machine mentioned above, the said opening left in order to vacuum-reduce the inside of the inner pack 3 is blocked, and the core material 2 which maintained the compressed state is inner. The shaped body 5 which is accommodated in the pack 3 is obtained. The sealing of the opening at this time can be simplified by sealing the edge portions at each front side of the one side portion 3A and the other side portion 3C of the inner pack 3 with the sealing portion 7 as described above. . As shown in FIG. 5, when all the opening ends of the inner pack 3 are sealed by the sealing portion 7, the core material 2 housed in the inner pack 3 is maintained in a stable compressed state. The molded body 5 thus obtained has a thickness t2 of the core material 2 in the inner pack 3 of several tens of mm or less, preferably about 25 mm, and can be easily stored in the bag-like barrier material 4. It becomes the dimension shape that there is.

In addition, in the present embodiment, the end portion of the inner pack 3 other than the vacuum pressure reducing opening is sealed before the core material 2 is compressed to a shape, but the core material 2 is removed from the state shown in FIG. After compression to a shape, all the opening ends of the inner pack 3 may be sealed in order or at once to obtain the desired molded body 5.

As described above, in order to maintain the shape of the compressed core 2, a binder is applied to the core 2 in order to maintain the shape of the compressed core 5, or the core 2 in the compressed state is fired for a predetermined time. There is no need to do it. That is, in the embodiment, after covering the core 2 with the inner pack 3, the core 2 is compressed to vacuum the inside of the inner pack 3 to seal the open end of the inner pack 3, and Only by keeping the core 2 in the compressed state inside the pack 3, the shaped body 5 having a stable dimensional shape can be obtained in a very short time. In addition, since only the equipment for sealing the opening end of the inner pack 3 needs to be provided in addition to the press machine for compressing the core material 2, the productivity can be remarkably improved, and the environment of the workplace is deteriorated or the insoluble substance is also reduced in terms of environment. There is no need to deal with and almost no energy loss by heat occurs. In addition, since the core 2 has nothing added as a single body, and only the inner pack 3 is covered around it, the extremely excellent heat insulation performance of the glass wool single body can be maintained as it is.

The molded body 5 obtained in this way is inserted into the bag-shaped barrier material 4 which has gas barrier property in the manufacturing process of the vacuum heat insulating material 1 which is the next heat insulating material from the opening edge part (not shown), and is then inserted into the vacuum chamber. The vacuum insulator 1 shown in FIG. 1 is formed by enclosing and vacuuming and heat-sealing and sealing the opening edge part of the said barrier material 4. In addition, the edge portion 3D of the barrier pack 3 on the outer side of the core material 2 may be folded in reverse in order to facilitate the insertion of the shaped body 5 into the barrier material 4. In addition, since the function as the inner pack 3 becomes unnecessary after the shape body 5 is inserted in the barrier material 4, the edge part of the said inner pack 3 may be cut and discarded. In this case, the core material 2 is temporarily expanded and restored inside the barrier material 4, but the core material 2 is compressed again by the vacuum thereafter, so that the desired vacuum insulating material 1 can be finally obtained.

In addition, in the manufacture of the vacuum heat insulating material 1, the said shaping | molding body 5 compresses the core material 2 to a fixed shape temporarily by the inner pack 3 until it is inserted into the barrier material 4. Since it can hold | maintain, gas barrier property and sealing property like the barrier material 4 are not required with respect to the inner pack 3.

 Therefore, the shaped body 5 by this embodiment has the advantage that the material of the inner pack 3 has some general purpose.

As described above, in the present embodiment, the shaped body 5 of the vacuum insulator 1 is formed by the inner material 3 of the core material 2 made of glass wool and the inner pack 3 as a sheet material capable of storing and holding the core material 2 in a compressed state. ).

 In addition, in the present embodiment, the core member 2 made of glass wool is covered with the inner pack 3, and the inside of the inner pack 3 is decompressed to store the core member 2 in a compressed state. The manufacturing method is adopted.

In this way, since the inner pack 3 can receive the core material 2 and keep it in a compressed state instead of the conventional inorganic binder or organic binder, it is necessary to apply a binder to the core material 2 or to perform a baking treatment. It is possible to obtain a stable shaped body 5 in a short time and eliminate problems in terms of productivity and environment. In addition, since nothing is added to the core 2 itself, including a binder, the extremely excellent heat insulating performance as the glass wool alone can be maintained as it is.                     

In addition, in this embodiment, since the thickness of the inner pack 3 is 0.05 mm or less, the opening part of the inner pack 3 left for sealing workability and vacuum pressure reduction when making the inner pack 3 into a bag is sealed. The workability can be improved.

In addition, this invention is not limited to the said Example, It can change in the range which does not deviate from the meaning of this invention. For example, in this embodiment, the vacuum insulator 1 as the heat insulator can be applied to all other products besides a refrigerator and a cooking appliance.

The present invention has been described above, and has the effects described below.

In the invention of claim 3, even when the binder is not applied or fired, a stable molded body can be obtained in a short time, and in addition, it is possible to prevent the thermal insulation performance as the shaped body from being deteriorated.

Moreover, the workability at the time of making a sheet material into a bag shape, and the workability at the time of sealing the opening part of a sheet material can be improved.

Claims (5)

delete delete Covering the core material made of glass wool with the sheet material, compressing the sheet material by a compressor or the like so as to thin the core material, depressurizing the inside of the sheet material, sealing the open end of the sheet material, and compressing the core material to the sheet material. The manufacturing method of the heat insulating material form characterized by storing in a state. The one side portion and the other side portion of the core member according to claim 3, wherein the core member is covered with a sheet member so as to face the one side portion and the other side portion of the sheet member with the core member sandwiched therebetween, while compressing the sheet member. A method of manufacturing a heat insulating material molded body characterized by sealing the open end of the sheet material after the ear portions on both the left and right sides and the front side are folded. A method for manufacturing a molded article of heat insulating material according to claim 3 or 4, wherein the shaped body of heat insulating material prepared according to claim 3 is inserted into a bag-shaped barrier material and vacuumed to seal the open end of the barrier material.

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