Glass wool body and method for manufacturing vacuum insulation component

Abstract

The glass wool body involved in the present invention has a laminated sheet material, which has a first sheet material and a second sheet material stacked on the first sheet material, the first sheet material is a sheet material formed by dry glass wool in a sheet shape, and the second sheet material is a sheet material formed by wet glass wool or glass fiber in a sheet shape, and the glass wool body is formed by winding the laminated sheets into a roll shape in a manner that the second sheet material is located on the inner side or the outer side of the first sheet material.

Description

Technical Field

[0001] The present invention relates to a glass wool body formed using dry glass wool, and a method for manufacturing a vacuum heat insulating material using the glass wool body as a core member. Background Art

[0002] The core of conventional vacuum insulation parts is formed by cutting a sheet of dry glass wool or a sheet of wet glass wool into a predetermined shape and stacking a plurality of the cut sheets. Furthermore, conventional vacuum insulation parts are manufactured by covering the core formed in this way with an outer covering having a barrier property, and decompressing the inside of the outer covering to seal the core with the outer covering.

[0003] Dry glass wool is formed by a centrifugal method that uses a high-speed rotor to cause molten glass to fly out with centrifugal force to make the glass fiber. Alternatively, dry glass wool is formed by a flame method that uses a flame to melt the front end of a glass rod while blowing it away to make the glass fiber. That is, a sheet made of dry glass wool is a sheet formed of a cotton-like material. Therefore, it is difficult to cut a sheet made of dry glass wool with good dimensional accuracy. Therefore, the core piece formed by cutting the dry glass wool sheet has a poorer dimensional accuracy than the core piece formed by cutting the wet glass wool sheet. That is, a vacuum insulation member using a core piece made of dry glass wool has a poorer dimensional accuracy than a vacuum insulation member using a core piece made of wet glass wool.

[0004] On the other hand, a sheet of wet glass wool is formed in the following manner. First, cotton-like glass wool is manufactured by a centrifugal method or a flame method. Next, the cotton-like glass wool is diffused in a binder solution, and the glass wool in the binder solution is scooped out by a papermaking method. The scooped glass wool is dried to complete a sheet of wet glass wool. Therefore, the sheet of wet glass wool can be cut with good dimensional accuracy compared to a sheet of dry glass wool. Therefore, the core piece formed by cutting a sheet of wet glass wool can have improved dimensional accuracy compared to a core piece formed by cutting a sheet of dry glass wool.

[0005] On the other hand, the core formed by cutting a sheet made of wet glass wool has a higher thermal conductivity than the core formed by cutting a sheet made of dry glass wool. That is, when a vacuum insulation member using a core made of wet glass wool and a vacuum insulation member using a core made of dry glass wool are compared with the vacuum insulation member using a core made of dry glass wool at the same core thickness, the vacuum insulation member using a core made of wet glass wool has lower thermal insulation performance than the vacuum insulation member using a core made of dry glass wool. Therefore, for the vacuum insulation member using a core made of wet glass wool, in order to ensure the same thermal insulation performance as the vacuum insulation member using a core made of dry glass wool, the thickness of the core must be greater than that of the vacuum insulation member using a core made of dry glass wool.

[0006] Therefore, in previous vacuum insulation parts, it has been proposed to stack a sheet of dry glass wool cut into a specified shape and a sheet of wet glass wool cut into a specified shape to form a core member, thereby improving dimensional accuracy and suppressing the reduction in insulation performance (see Patent Document 1).

[0007] Patent Document 1: Japanese Patent Application Publication No. 2012-159144

[0008] As described above, in the vacuum insulation member described in Patent Document 1, a core member is formed by stacking a sheet of dry glass wool cut into a predetermined shape and a sheet of wet glass wool cut into a predetermined shape. Therefore, the vacuum insulation member described in Patent Document 1 has the following problem: the sizes of the sheet of dry glass wool cut into a predetermined shape and the sheet of wet glass wool cut into a predetermined shape are inconsistent, and the dimensional accuracy is still poor. Summary of the invention

[0009] The present invention is proposed against the background of the above-mentioned problems, and the first purpose is to provide a glass wool body that can improve the dimensional accuracy compared with the past in a vacuum insulation member using a core member formed by laminating a sheet made of dry glass wool and a sheet made of other than dry glass wool. In addition, the second purpose of the present invention is to provide a method for manufacturing a vacuum insulation member using the glass wool body of the present invention as a core member.

[0010] The glass wool body involved in the present invention has a laminated sheet material, which has a first sheet material and a second sheet material stacked on the first sheet material, the first sheet material is a sheet material formed by dry glass wool in a sheet shape, and the second sheet material is a sheet material formed by wet glass wool or glass fiber in a sheet shape, and the glass wool body is obtained by winding the laminated sheets into a roll shape in such a way that the second sheet material becomes the inner side or the outer side of the first sheet material.

[0011] In addition, the manufacturing method of the vacuum insulation component involved in the present invention is a manufacturing method of the vacuum insulation component using a plurality of glass wool bodies involved in the present invention, which comprises the following steps: a stacking step of extending the plurality of the above-mentioned glass wool bodies and overlapping the plurality of the above-mentioned stacked sheets in the up and down directions; a core member forming step of cutting the plurality of the above-mentioned stacked sheets overlapped in the above-mentioned stacking step to form a core member; and a covering step of covering the above-mentioned core member with an outer covering member.

[0012] When the glass wool body of the present invention is used to make the core of a vacuum insulation component, the first sheet material that is difficult to cut with good dimensional accuracy can be cut together with the second sheet material. Therefore, by using the glass wool body of the present invention to make the core of a vacuum insulation component, it is easy to make the size of the first sheet material, which is dry glass wool, and the second sheet material, which is wet glass wool or glass fiber, consistent. Therefore, by using the glass wool body of the present invention to make the core of a vacuum insulation component, in a vacuum insulation component using a core component formed by laminating a sheet material made of dry glass wool and a sheet material other than dry glass wool, the dimensional accuracy can be improved compared to the past. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view showing the glass wool body involved in this embodiment.

[0014] Figure 2 It is a perspective view showing another example of the glass wool body involved in this embodiment.

[0015] Figure 3 It is a flowchart which shows the manufacturing process of the glass wool body which concerns on this embodiment.

[0016] Figure 4 It is a figure for demonstrating the manufacturing method of the glass wool body which concerns on this embodiment.

[0017] Figure 5 It is a figure for demonstrating the manufacturing method of the glass wool body which concerns on this embodiment.

[0018] Figure 6 It is a cross-sectional view showing the vacuum heat insulating panel according to the present embodiment.

[0019] Figure 7 This is a flowchart showing a manufacturing process of the vacuum heat insulating panel according to the present embodiment.

[0020] Figure 8 It is a figure for demonstrating the manufacturing method of the vacuum insulation panel which concerns on this embodiment.

[0021] Fig. 9 It is a figure for demonstrating the manufacturing method of the vacuum insulation panel which concerns on this embodiment.

[0022] Fig.10 It is a figure which shows the core material of the vacuum heat insulating panel which concerns on this embodiment.

[0023] Fig.11 It is a figure which shows the core material of the vacuum heat insulating panel which concerns on this embodiment.

[0024] Fig.12 It is a figure which shows the core material of the vacuum heat insulating panel which concerns on this embodiment. DETAILED DESCRIPTION

[0025] Implementation method.

[0026] Figure 1 It is a perspective view showing the glass wool body involved in this embodiment.

[0027] The glass wool body 10 is cut into a predetermined shape as described below and used as a core member 31 of a vacuum heat insulating panel 30. The glass wool body 10 includes a laminated sheet 20. The laminated sheet 20 includes a first sheet 21 and a second sheet 22 laminated on the first sheet 21.

[0028] The first sheet material 21 is a sheet material formed by forming dry glass wool into a sheet shape. The dry glass wool is formed by a centrifugal method, which uses a high-speed rotor to make molten glass fly out with centrifugal force to make the glass fiber. Alternatively, the dry glass wool is formed by a flame method, which uses a flame to melt the front end of a glass rod while blowing it away to make the glass fiber. That is, the first sheet material 21 is a sheet material formed of a cotton-like material. Compared with a sheet material made of wet glass wool, a sheet material made of dry glass wool is difficult to cut with good dimensional accuracy.

[0029] The second sheet material 22 is a sheet material formed of wet glass wool. The wet glass wool sheet material is formed as follows. First, cotton-like glass wool is manufactured by a centrifugal method or a flame method. Next, the cotton-like glass wool is diffused in an adhesive solution, and the glass wool in the adhesive solution is scooped out by a papermaking method. The scooped glass wool is dried to complete the wet glass wool sheet material. Compared with a sheet material made of dry glass wool, a sheet material of wet glass wool can be cut with good dimensional accuracy. On the other hand, compared with a sheet material made of dry glass wool, a sheet material of wet glass wool has lower thermal insulation performance.

[0030] In addition, the second sheet material 22 may also be a sheet material formed of glass fibers in a sheet shape. Glass fibers are substantially straight glass fibers drawn from a spinning nozzle using a continuous filament method. The sheet material made of glass fibers, like the sheet material of wet glass wool, can be cut with good dimensional accuracy compared to the sheet material of dry glass wool, and has lower thermal insulation performance than the sheet material of dry glass wool.

[0031] The glass wool body 10 is produced by winding the laminated sheet 20 constructed as described above into a roll. Figure 1 The glass wool body 10 shown is obtained by winding the laminated sheet 20 into a roll shape so that the second sheet 22 is located inside the first sheet 21. However, such a structure is only an example of the glass wool body 10 according to the present embodiment.

[0032] Figure 2 It is a perspective view showing another example of the glass wool body involved in this embodiment.

[0033] Figure 2 The glass wool body 10 shown is obtained by winding the laminated sheet 20 into a roll shape so that the second sheet 22 is located outside the first sheet 21. The glass wool body 10 according to the present embodiment may also be configured in this manner.

[0034] Next, a method for manufacturing the glass wool body 10 according to the present embodiment will be described.

[0035] Figure 3 It is a flowchart which shows the manufacturing process of the glass wool body which concerns on this embodiment. Figure 4 as well as Figure 5 : is a diagram for explaining a method for manufacturing a glass wool body according to the present embodiment. Figure 4 as well as Figure 5 The glass wool body 10 is shown in the process of winding the laminated sheet 20 into a roll.

[0036] Step S1 of the manufacturing process of the glass wool body 10 is a laminated sheet forming process of forming the laminated sheet 20. In the laminated sheet forming process, the second sheet 22 is laminated on the first sheet 21 to form the laminated sheet 20. Specifically, in manufacturing the laminated sheet 20 wound in such a manner that the second sheet 22 is located inside the first sheet 21, the laminated sheet 20 is formed. Figure 1 In the case of the glass wool body 10 shown in FIG. Figure 4 As shown, the second sheet 22 is stacked on the upper surface of the first sheet 21. In addition, in the manufacture of the second sheet 22 is wound in the manner of being located outside the first sheet 21 Figure 2 In the case of the glass wool body 10 shown in FIG. Figure 5 As shown, the second sheet 22 is stacked on the lower surface of the first sheet 21.

[0037] Step S2 of the manufacturing process of the glass wool body 10 is a winding process of winding the laminated sheet 20 formed in the laminated sheet forming process. The glass wool body 10 is completed by winding the laminated sheet 20 formed in the laminated sheet forming process. For example, by winding a laminated sheet 20 having the second sheet 22 superimposed on the upper surface of the first sheet 21, Figure 4The laminated sheet 20 shown can be manufactured by winding the second sheet 22 inside the first sheet 21. Figure 1 The glass wool body 10 shown in FIG. 1 is also wound around the lower surface of the first sheet 21 and overlapped with the second sheet 22. Figure 5 The laminated sheet 20 shown can be manufactured by winding the second sheet 22 on the outside of the first sheet 21. Figure 2 The glass wool body 10 is shown.

[0038] Next, the vacuum heat insulating panel 30 using the glass wool body 10 according to the present embodiment as the core material 31 will be described.

[0039] Figure 6 It is a cross-sectional view showing the vacuum heat insulating panel according to the present embodiment.

[0040] The vacuum insulation member 30 includes a core member 31 and an outer covering member 32 covering the core member 31. The space surrounded by the outer covering member 32, that is, the space in which the core member 31 is arranged, is a vacuum space that is depressurized to a vacuum degree of, for example, about 1Pa to 3Pa. The vacuum space surrounded by the outer covering member 32 is formed by heat-sealing or the like the opening portion while depressurizing the inside of the bag-shaped outer covering member 32 that is partially open. In other words, when the vacuum insulation member 30 is viewed along the thickness direction of the vacuum insulation member 30, Figure 6 When viewed from the top and bottom of the paper, the overall shape is, for example, a roughly rectangular plate. In addition, in the present embodiment, the vacuum insulation member 30 further includes a moisture adsorbent 33 for absorbing moisture in the vacuum space surrounded by the outer covering member 32. That is, the core member 31 and the moisture adsorbent 33 of the vacuum insulation member 30 involved in the present embodiment are covered by the outer covering member 32. Since the moisture adsorbent 33 is provided, the moisture existing in the vacuum space surrounded by the outer covering member 32 is adsorbed by the moisture adsorbent 33, thereby suppressing the deterioration of the vacuum insulation member 30 over time.

[0041] The core member 31 is formed by stacking a plurality of laminated sheets 20 cut into a predetermined shape such as a quadrilateral in the thickness direction of the vacuum insulation member 30. That is, the core member 31 is formed by stacking a plurality of laminated sheets 20 cut into a predetermined shape in the thickness direction of the vacuum insulation member 30. Figure 6 It is composed of layers stacked in the up and down directions.

[0042] The outer covering member 32 has gas barrier properties. The outer covering member 32 has at least a gas barrier layer and a heat-welded layer. As the gas barrier layer, a plastic film and a metal foil on which a metal, a metal oxide and diamond-like carbon are vapor-deposited can be used. The metal oxide vapor-deposited on the plastic film and the metal foil is, for example, silicon dioxide and aluminum oxide. In addition, the gas barrier layer of the outer covering member 32 is not particularly limited, and various gas barrier layers used in the past can be used for the purpose of reducing gas permeation.

[0043] The heat-welded layer of the outer covering material 32 is a portion that is heat-welded when the outer covering material 32 is formed into a bag shape and when the opening of the bag-shaped outer covering material 32 is closed. Figure 6 In the figure, the portion of the heat-fused layer that has been heat-fused is represented as a heat-fused portion 34. The heat-fused layer is the portion with the highest gas permeability among the layers constituting the outer covering. Therefore, the properties of the heat-fused layer have a great influence on the change in the thermal insulation performance of the vacuum insulation member 30 over time. In consideration of suppressing the intrusion of gases such as air into the interior of the vacuum insulation member 30 from the end surface of the heat-fused portion 34, and heat leakage caused by heat conduction when a metal foil is used as a gas barrier layer, the thickness of the heat-fused layer is preferably 25 μm to 60 μm. As the heat-fused layer, for example, a non-stretched polypropylene film, a high-density polyethylene film, and a linear low-density polyethylene film can be used. However, the heat-fused layer is not limited to being formed by these materials, and various heat-fused layers used in the past can be used.

[0044] In addition, the outer covering member 32 may also have a surface protective layer on the outside of the gas barrier layer, in other words, on the surface on the opposite side of the core member 31 based on the gas barrier layer. As the surface protective layer, for example, a polyethylene terephthalate film, a polypropylene film, a nylon film, etc. can be used. However, the heat-welded layer is not limited to these, and various surface protective layers used in the past can be used. By providing a surface protective layer, compared with a case where there is no surface protective layer, when the vacuum insulation member 30 is bent, when a protrusion contacts the surface of the vacuum insulation member 30, etc., the outer covering member 32 can be further prevented from being damaged.

[0045] The moisture adsorbent 33 is, for example, calcium oxide inserted into a bag having good air permeability. The moisture adsorbent 33 is not limited to calcium oxide, and is not particularly limited as long as it has moisture adsorption properties such as zeolite.

[0046] Next, a method for manufacturing the vacuum heat insulating panel 30 according to the present embodiment will be described.

[0047] Figure 7 This is a flowchart showing a manufacturing process of the vacuum heat insulating panel according to the present embodiment. Figure 8 as well as Fig. 9: is a diagram for explaining the method for manufacturing the vacuum insulation material according to the present embodiment. Figure 8 as well as Fig. 9 The arc-shaped arrows shown in FIG. 1 indicate the rotation direction of the glass wool body 10 when the glass wool body 10 is extended. Figure 8 as well as Fig. 9 The hollow arrows shown indicate the advancing direction of the laminated sheets 20 when the glass wool body 10 is extended.

[0048] The vacuum insulation member 30 is manufactured using a plurality of glass wool bodies 10. Step S11 of the manufacturing process of the vacuum insulation member 30 is a stacking process. In the stacking process, Figure 8 as well as Fig. 9 As shown, a plurality of glass wool bodies 10 are stretched and a plurality of stacked sheets 20 are stacked in the vertical direction. In addition, in the present embodiment, an example is shown in which four glass wool bodies 10 are stretched and four stacked sheets 20 are stacked in the vertical direction.

[0049] Step S12 after step S11 in the manufacturing process of the vacuum insulation member 30 is a core member forming process. In the core member forming process, the plurality of stacked sheets 20 overlapped in the stacking process are cut to form a core member 31. Specifically, the plurality of stacked sheets 20 overlapped are cut in the up-down direction. Therefore, the stacking direction of the overlapped stacked sheets 20 becomes the thickness direction of the core member 31. In other words, the stacking direction of the overlapped stacked sheets 20 becomes the thickness direction of the vacuum insulation member 30.

[0050] In conventional vacuum insulation parts, a core member is formed by stacking a sheet of dry glass wool cut into a predetermined shape and a sheet of wet glass wool cut into a predetermined shape. The case where the dry glass wool sheet is cut has a poorer dimensional accuracy than the case where the wet glass wool sheet is cut. Therefore, in conventional vacuum insulation parts, the sizes of the dry glass wool sheet cut into a predetermined shape and the wet glass wool sheet cut into a predetermined shape are inconsistent, and the dimensional accuracy is poor.

[0051] On the other hand, in the present embodiment, when manufacturing the core member 31 of the vacuum insulation member 30, the first sheet 21 and the second sheet 22, which are difficult to cut with good dimensional accuracy, can be cut together. Therefore, by using the glass wool body 10 involved in the present embodiment to manufacture the core member 31 of the vacuum insulation member 30, it is easy to make the size of the first sheet 21, which is dry glass wool, and the second sheet 22, which is wet glass wool or glass fiber, consistent. Therefore, by using the glass wool body 10 involved in the present embodiment to manufacture the core member 31 of the vacuum insulation member 30, it is possible to improve the dimensional accuracy of the vacuum insulation member using the core member formed by laminating a sheet made of dry glass wool and a sheet other than dry glass wool.

[0052] In addition, in conventional vacuum insulation panels, sheets cut into predetermined shapes are cut and stacked to form a core member. Therefore, in conventional vacuum insulation panels, stacking the sheets takes time, and the work efficiency when making the core member is poor.

[0053] On the other hand, by extending the glass wool body 10 involved in the present embodiment and cutting the stacked sheets 20 into a predetermined shape, the first sheet 21 and the second sheet 22 are already stacked. Therefore, by using the glass wool body 10 involved in the present embodiment to manufacture the core member 31 of the vacuum insulation member 30, the time for stacking the sheets constituting the core member 31 can be shortened compared to the past, thereby improving the work efficiency when manufacturing the core member 31. In particular, in the case of the method for manufacturing the core member 31 using a plurality of glass wool bodies 10 described in the present embodiment, after the overlapping plurality of stacked sheets 20 are cut, all the sheets constituting the core member 31 are completely stacked. Therefore, in the case of the method for manufacturing the core member 31 using a plurality of glass wool bodies 10 described in the present embodiment, the time for stacking the sheets constituting the core member 31 can be further shortened, thereby improving the work efficiency when manufacturing the core member 31.

[0054] Figure 10 to Figure 12 It is a figure which shows the core material of the vacuum heat insulating panel which concerns on this embodiment. Figure 10 to Figure 12 The core member 31 shown in FIG. 1 is a diagram showing the core member 31 formed in the core member forming step of step S12 as viewed from the side. Figure 10 to Figure 12 In the figure, in order to make the first sheet material 21 and the second sheet material 22 easily distinguishable, the second sheet material 22 is hatched.

[0055] In the present embodiment, a plurality of stacked sheets 20 are overlapped in the vertical direction in the stacking process in such a manner that the upper surface and the lower surface of the core member 31 formed in the core member forming process become the second sheet 22. That is, the surfaces of the core member 31 that are opposite in the thickness direction of the core member 31 become the second sheet 22. Therefore, in the vacuum insulation member 30 involved in the present embodiment, the second sheet 22 is in contact with the outer covering member 32. The surface of the second sheet 22, which is wet glass wool or glass fiber, has less unevenness than the surface of the first sheet 21, which is dry glass wool. Therefore, by setting the surfaces that are opposite in the thickness direction of the core member 31 as the second sheet 22, the unevenness of the surface of the vacuum insulation member 30 becomes less noticeable, thereby improving the appearance of the vacuum insulation member 30.

[0056] In addition, by setting the opposite surface of the core member 31 in the thickness direction as the second sheet 22, the following effect can also be obtained. Blocks of unexpanded glass particles, that is, small particles, are contained in the dry glass wool, wet glass wool, and glass fiber. If the small particles come into contact with the outer covering member 32, through holes are formed in the outer covering member 32 due to the small particles, and air invades the interior of the vacuum insulation member 30 from the through holes, resulting in the possibility of a reduction in the thermal insulation performance of the vacuum insulation member 30. Here, the amount of small particles contained in the wet glass wool and glass fiber is less than the amount of small particles contained in the dry glass wool. Therefore, by setting the opposite surface of the core member 31 in the thickness direction as the second sheet 22 as wet glass wool or glass fiber, the reduction in the thermal insulation performance of the vacuum insulation member 30 caused by small particles can be suppressed compared to the case where the opposite surface of the core member 31 in the thickness direction is set as the first sheet 21 as dry glass wool.

[0057] The core member 31 whose surfaces facing each other in the thickness direction become the second sheet 22 is obtained by stacking a plurality of stacked sheets 20 in the stacking process as follows. Here, the glass wool body 10 composed of the stacked sheet 20 arranged at the top when the plurality of stacked sheets 20 are stacked in the stacking process is referred to as the first glass wool body 11. In addition, the glass wool body 10 composed of the stacked sheet 20 arranged at the bottom when the plurality of stacked sheets 20 are stacked in the stacking process is referred to as the second glass wool body 12. In this case, for the stacked sheets 20 of the first glass wool body 11, when the plurality of stacked sheets 20 are stacked in the stacking process, the second sheet 22 may be located above the first sheet 21. In addition, for the stacked sheets 20 of the second glass wool body 12, when the plurality of stacked sheets 20 are stacked in the stacking process, the second sheet 22 may be located below the first sheet 21. In the laminating step, the laminating sheets 20 of the first glass wool body 11 and the laminating sheets 20 of the second glass wool body 12 are overlapped in such a posture, thereby obtaining the core member 31 whose surfaces facing each other in the thickness direction serve as the second sheet 22 .

[0058] Specifically, for example, Figure 8 As shown in FIG. 1 , the first glass wool body 11 and the second glass wool body 12 are formed by rolling the laminated sheet 20 into a roll shape in such a way that the second sheet 22 is located inside the first sheet 21. In this case, when the first glass wool body 11 and the second glass wool body 12 are extended in the laminating process, the first glass wool body 11 can be rotated in the direction opposite to the rotation direction of the second glass wool body 12. More specifically, in the laminating process, the first glass wool body 11 and the second glass wool body 12 are extended as shown in FIG. Figure 8 When extending to the right side of the paper, the first glass wool body 11 rotates counterclockwise and the second glass wool body 12 rotates clockwise. Thus, the core member 31 whose surfaces facing each other in the thickness direction become the second sheet 22 can be obtained.

[0059] In addition, for example, the first glass wool body 11 and the second glass wool body 12 are formed by rolling the laminated sheet 20 into a roll shape in such a manner that the second sheet 22 is located outside the first sheet 21. In this case, when the first glass wool body 11 and the second glass wool body 12 are extended in the laminating process, the first glass wool body 11 can be rotated in the direction opposite to the rotation direction of the second glass wool body 12. More specifically, in the laminating process, the first glass wool body 11 and the second glass wool body 12 are extended as shown in FIG. Figure 8 When extending to the right side of the paper, the first glass wool body 11 rotates clockwise and the second glass wool body 12 rotates counterclockwise. Thus, the core member 31 whose surfaces facing each other in the thickness direction become the second sheet 22 can be obtained.

[0060] In addition, for example, Fig. 9 As shown, the first glass wool body 11 is formed by winding the laminated sheet 20 into a roll in a manner that the second sheet 22 is located on the inner side of the first sheet 21. Furthermore, the second glass wool body 12 is formed by winding the laminated sheet 20 into a roll in a manner that the second sheet 22 is located on the outer side of the first sheet 21. In this case, when the first glass wool body 11 and the second glass wool body 12 are extended in the laminating process, the first glass wool body 11 can be rotated in the same direction as the rotation direction of the second glass wool body 12. More specifically, in the laminating process, the first glass wool body 11 and the second glass wool body 12 are extended as shown. Fig. 9 When extending to the right side of the paper, the first glass wool body 11 and the second glass wool body 12 may be rotated counterclockwise. Thus, a core member 31 whose surfaces facing each other in the thickness direction become the second sheet 22 can be obtained.

[0061] In addition, for example, the first glass wool body 11 is formed by winding the laminated sheet 20 into a roll in a manner such that the second sheet 22 is located on the outside of the first sheet 21. Furthermore, the second glass wool body 12 is formed by winding the laminated sheet 20 into a roll in a manner such that the second sheet 22 is located on the inside of the first sheet 21. In this case, similarly, when the first glass wool body 11 and the second glass wool body 12 are extended in the laminating process, the first glass wool body 11 can be rotated in the same direction as the rotation direction of the second glass wool body 12. More specifically, in the laminating process, the first glass wool body 11 and the second glass wool body 12 are extended as follows. Fig. 9 When extending to the right side of the paper, the first glass wool body 11 and the second glass wool body 12 may be rotated clockwise. Thus, a core member 31 whose surfaces facing each other in the thickness direction become the second sheet 22 can be obtained.

[0062] Furthermore, the glass wool body 10 composed of the laminated sheets 20 sandwiched between the laminated sheets 20 of the first glass wool body 11 and the laminated sheets 20 of the second glass wool body 12 can be formed by winding the laminated sheets 20 into a roll in a manner that the second sheet 22 is located on the outside of the first sheet 21, or can be formed by winding the laminated sheets 20 into a roll in a manner that the second sheet 22 is located on the inside of the first sheet 21. Furthermore, when the glass wool body 10 composed of the laminated sheets 20 sandwiched between the laminated sheets 20 of the first glass wool body 11 and the laminated sheets 20 of the second glass wool body 12 is extended in the lamination process, the rotation direction is not particularly limited. Therefore, as Figure 10 to Figure 12 As shown, the laminated sheets 20 sandwiched between the laminated sheets 20 of the first glass wool body 11 and the laminated sheets 20 of the second glass wool body 12 may have the second sheet 22 located below the first sheet 21 or above the first sheet 21 .

[0063] Step S20 after step S12 in the manufacturing process of the vacuum insulation member 30 is a covering process of covering the core member 31 with the outer covering member 32. In the present embodiment, the covering process includes a core member inserting process of step S21, a drying process of step S22, a moisture adsorbent inserting process of step S23, a decompression process of step S24, and a sealing process of step S25.

[0064] In the core inserting process of step S21, the core 31 is inserted into the bag-shaped outer covering member 32. The bag shape of the outer covering member 32 may be a four-side sealed bag, a folded bag, a three-side sealed bag, a pillow bag, a central tape sealed bag, etc., without particular limitation.

[0065] After the core inserting step, in the drying step of step S22, the core 31 and the outer covering member 32 are dried to remove moisture from the core 31 and the outer covering member 32. In the present embodiment, the core 31 and the outer covering member 32 are heated at 110° C. for about 2 hours in a state where the core 31 is inserted into the outer covering member 32 formed in a bag shape. The conditions for drying the core 31 and the outer covering member 32 are not particularly limited as long as moisture can be removed from the core 31 and the outer covering member 32.

[0066] After the drying process, in the moisture adsorbent insertion process of step S23, the moisture adsorbent 33 is inserted into the interior of the outer covering member 32 formed in a bag shape. After the moisture adsorbent insertion process, in the decompression process of step S24, the interior of the outer covering member 32 formed in a bag shape is decompressed to a vacuum degree of about 1Pa to 3Pa. After the decompression process, in the sealing process of step S25, the opening of the outer covering member 32 formed in a bag shape is heat-sealed or the like, and the core member 31 and the moisture adsorbent 33 are sealed with the outer covering member 32. Thus, the vacuum insulation member 30 is completed. In addition, the position of the moisture adsorbent insertion process is not limited to the above-mentioned position. The position of the moisture adsorbent insertion process can be any position as long as it is before the sealing process.

[0067] As described above, the glass wool body 10 involved in this embodiment includes a laminated sheet 20, and the laminated sheet 20 has a first sheet 21 and a second sheet 22 stacked on the first sheet 21. The first sheet 21 is a sheet formed by forming dry glass wool into a sheet. The second sheet 22 is a sheet formed by forming wet glass wool or glass fiber into a sheet. In addition, the glass wool body 10 is formed by winding the laminated sheet 20 into a roll in such a manner that the second sheet 22 is located inside or outside the first sheet 21.

[0068] When the core member 31 of the vacuum insulation member 30 is manufactured using the glass wool body 10 according to the present embodiment, the first sheet 21 and the second sheet 22, which are difficult to be cut with good dimensional accuracy, can be cut together. Therefore, by using the glass wool body 10 according to the present embodiment to manufacture the core member 31 of the vacuum insulation member 30, it is easy to make the sizes of the first sheet 21, which is dry glass wool, and the second sheet 22, which is wet glass wool or glass fiber, consistent. Therefore, by using the glass wool body 10 according to the present embodiment to manufacture the core member 31 of the vacuum insulation member 30, in a vacuum insulation member using a core member formed by laminating a sheet made of dry glass wool and a sheet other than dry glass wool, the dimensional accuracy can be improved compared to the past.

[0069] Description of Reference Numerals

[0070] 10...glass wool body; 11...first glass wool body; 12...second glass wool body; 20...laminated sheet; 21...first sheet; 22...second sheet; 30...vacuum insulation member; 31...core member; 32...outer covering member; 33...moisture adsorbent; 34...heat-welding member.

Claims

1. A method for manufacturing a vacuum insulation component, using a plurality of glass wool bodies, The glass wool body comprises a laminated sheet, wherein the laminated sheet comprises a first sheet and a second sheet laminated on the first sheet. The first sheet material is a sheet material formed by forming dry glass wool into a sheet shape. The second sheet material is a sheet material formed by wet glass wool or glass fiber. The glass wool body is formed by winding the laminated sheets into a roll in such a manner that the second sheet is located inside or outside the first sheet. The method for manufacturing the vacuum insulation panel is characterized by comprising the following steps: A laminating step of extending the plurality of glass wool bodies and overlapping the plurality of laminating sheets in the vertical direction; a core member forming step of cutting the plurality of stacked sheets stacked in the stacking step to form a core member; and The coating step is to coat the core member with an outer coating member.

2. The method for manufacturing a vacuum insulation member according to claim 1, wherein: The glass wool body composed of the stacked sheet disposed on the top when a plurality of stacked sheets are stacked in the stacking step is used as the first glass wool body, and When the glass wool body composed of the stacked sheet disposed at the bottom when a plurality of stacked sheets are stacked in the stacking step is used as the second glass wool body, When a plurality of the stacked sheets are stacked in the stacking step, In the stacked sheets of the first glass wool body, the second sheet is located above the first sheet, In the stacked sheets of the second glass wool body, the second sheet is located below the first sheet.

3. The method for manufacturing a vacuum insulation member according to claim 2, wherein: The first glass wool body and the second glass wool body are used to roll the laminated sheets in a manner such that the second sheet is located inside the first sheet. When the first glass wool body and the second glass wool body are extended in the laminating step, the first glass wool body is rotated in a direction opposite to a rotation direction of the second glass wool body.

4. The method for manufacturing a vacuum insulation member according to claim 2, wherein: The first glass wool body and the second glass wool body are used to roll the laminated sheets in a manner such that the second sheet is located outside the first sheet. When the first glass wool body and the second glass wool body are extended in the laminating step, the first glass wool body is rotated in a direction opposite to a rotation direction of the second glass wool body.

5. The method for manufacturing a vacuum insulation member according to claim 2, wherein: The first glass wool body is formed by winding the laminated sheets into a roll in such a manner that the second sheet is located inside the first sheet. The second glass wool body is formed by winding the laminated sheets into a roll in such a manner that the second sheet is located outside the first sheet. When the first glass wool body and the second glass wool body are extended in the laminating step, the first glass wool body is rotated in the same direction as a rotation direction of the second glass wool body.

6. The method for manufacturing a vacuum insulation member according to claim 2, wherein: The first glass wool body is formed by winding the laminated sheets into a roll in such a manner that the second sheet is located outside the first sheet. The second glass wool body is formed by winding the laminated sheets into a roll in such a manner that the second sheet is located inside the first sheet. When the first glass wool body and the second glass wool body are extended in the laminating step, the first glass wool body is rotated in the same direction as a rotation direction of the second glass wool body.

7. A vacuum insulation component, characterized in that: The vacuum insulation panel is manufactured by the manufacturing method of any one of claims 1 to 6.

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