WO2020096052A1 - Élément d'isolation thermique et son procédé de fabrication - Google Patents

Élément d'isolation thermique et son procédé de fabrication Download PDF

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Publication number
WO2020096052A1
WO2020096052A1 PCT/JP2019/043964 JP2019043964W WO2020096052A1 WO 2020096052 A1 WO2020096052 A1 WO 2020096052A1 JP 2019043964 W JP2019043964 W JP 2019043964W WO 2020096052 A1 WO2020096052 A1 WO 2020096052A1
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WIPO (PCT)
Prior art keywords
sealing region
outer packaging
packaging material
region
heat insulating
Prior art date
Application number
PCT/JP2019/043964
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English (en)
Japanese (ja)
Inventor
智史 上田
雄登 大井
直樹 橋ヶ谷
浩明 高井
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201980069100.0A priority Critical patent/CN112912655B/zh
Priority to JP2020555645A priority patent/JP7264912B2/ja
Publication of WO2020096052A1 publication Critical patent/WO2020096052A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/10—Insulation, e.g. vacuum or aerogel insulation

Definitions

  • the present invention relates to a heat insulating member and a manufacturing method thereof.
  • a heat insulating member including a bag-shaped outer wrapping material made of a laminated film and the like, and a core material sealed inside the outer wrapping material in a depressurized state.
  • a method for manufacturing the heat insulating member for example, a dry core material is placed inside a bag-shaped outer packaging material made of a laminated film or the like, and the opening portion of the outer packaging material is depressurized to a substantially vacuum state.
  • a method of heat-sealing and hermetically sealing see, for example, Japanese Patent No. 3580315).
  • the film forming the outer packaging material may be locally bent at the sealing portion. This is due to various factors such as misalignment when positioning the outer packaging material with respect to the sealing machine for heat welding to the outer packaging material, gas flow when decompressing the inside of the outer packaging material, and operation of the sealing machine. This is because displacement and wrinkles occur in the sealed portion of the material.
  • the film in the sealing part When the film in the sealing part is bent like this, the film may not be sufficiently welded at the bent part, and air may enter the inside of the outer packaging material after sealing. Due to such air intrusion, the degree of vacuum inside the outer packaging material is lowered, and as a result, the heat insulating performance of the heat insulating member is lowered, or the heat insulating member itself expands or deforms. There was a case where the sex decreased.
  • the present invention has been made to solve the above problems, and an object thereof is to provide a highly reliable heat insulating member.
  • a method for manufacturing a heat insulating member includes a step of preparing a processing object, a step of depressurizing the inside of an outer packaging material in the processing object, and a step of forming a final sealing region.
  • a processing target object including a bag-shaped outer packaging material having an opening formed therein and a core material arranged inside the outer packaging material is prepared.
  • the final sealing region is formed so as to partition the inside of the outer packaging material from the outside of the outer packaging material along the opening in the outer packaging material while the inside of the outer packaging material is depressurized. ..
  • the step of forming the final sealing region is performed in a state where the auxiliary sealing region extending along the region where the final sealing region is to be formed is previously formed in the outer packaging material.
  • the heat insulating member according to the present disclosure includes a core material and a bag-shaped outer packaging material that holds the core material inside.
  • the inside of the outer packaging material is decompressed as compared with the outside of the outer packaging material.
  • the outer packaging material includes a sealing region arranged so as to surround the core member, and an auxiliary sealing region extending along a part of the sealing region.
  • a highly reliable heat insulating member can be obtained by forming the auxiliary sealing region.
  • FIG. 3 is a schematic perspective view of a heat insulating member according to the first embodiment.
  • FIG. 2 is a schematic sectional view taken along line II-II in FIG. 1.
  • It is a plane schematic diagram of the heat insulation member shown in FIG. 6 is a flowchart for explaining a method of manufacturing the heat insulating member shown in FIG. 1.
  • FIG. 6 is a schematic plan view for explaining the method for manufacturing the heat insulating member shown in FIG. 4.
  • FIG. 6 is a schematic plan view for explaining the method for manufacturing the heat insulating member shown in FIG. 4.
  • FIG. 6 is a schematic cross-sectional view for explaining the method of manufacturing the heat insulating member shown in FIG. 4.
  • FIG. 9 is an enlarged schematic sectional view taken along line IX-IX in FIG. 8.
  • 7 is a schematic plan view of a heat insulating member according to Embodiment 2.
  • FIG. FIG. 11 is a schematic cross-sectional view for explaining the method of manufacturing the heat insulating member shown in FIG. 10. It is a plane schematic diagram of the heat insulation member which concerns on Embodiment 3.
  • 13 is a flowchart for explaining a method of manufacturing the heat insulating member shown in FIG. 12. It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG.
  • FIG. 22 is a schematic plan view for explaining the method for manufacturing the heat insulating member shown in FIG. 21.
  • FIG. 1 is a schematic perspective view of a heat insulating member according to the first embodiment.
  • FIG. 2 is a schematic sectional view taken along line II-II in FIG.
  • FIG. 3 is a schematic plan view of the heat insulating member shown in FIG.
  • the heat insulating member 1 shown in FIGS. 1 to 3 is a vacuum heat insulating material, and includes a core material 2, a bag-shaped outer packaging material 3 for holding the core material 2 therein, and an outer packaging material 3. And an adsorbent 4.
  • the core material 2 is, for example, an aggregate of glass fibers.
  • the inside of the outer packaging material 3 is decompressed as compared with the outside of the outer packaging material 3.
  • the inside of the outer packaging material 3 is depressurized to, for example, about several Pa.
  • the outer packaging material 3 includes a sealing region 30 arranged so as to surround the core material 2, and an auxiliary sealing region 6 extending along a final sealing region 8 which is a part of the sealing region 30. ..
  • the inside of the outer packaging material 3 is hermetically sealed by the sealing region 30.
  • the auxiliary sealing region 6 is arranged on the outer peripheral side of the sealing region 30 in the outer packaging material 3.
  • the sealing area 30 includes a first sealing area 3aa and a final sealing area 8.
  • the auxiliary sealing region 6 is connected to the sealing region 30 by the second sealing region 3ab.
  • the opening 7 is formed in a region located on the outer peripheral side of the sealing region 30.
  • the auxiliary sealing region 6 is arranged so as to sandwich the opening 7 in a direction along the extending direction of the final sealing region 8 which is a part of the sealing region 30.
  • the core material 2 may be configured by stacking a plurality of glass fiber aggregates, for example. By thus configuring the core material 2 with an aggregate of fibers such as glass fibers, it is possible to suppress heat leakage due to heat conduction of the core material 2 itself.
  • the core material 2 is covered with the outer packaging material 3.
  • the core material 2 is compressed by the atmospheric pressure through the outer wrapping material 3 when the inside of the outer wrapping material 3 is depressurized to about several Pa (hereinafter also referred to as a vacuum state).
  • the thickness of the core material 2 before being housed in the outer packaging material 3 is relatively larger than the thickness of the core material 2 when the inside of the outer packaging material 3 is in a vacuum state.
  • the thickness of the core material 2 before being housed in the outer packaging material 3 is the thickness of the core material 2 when the inside of the outer packaging material 3 is in a vacuum state when the core material 2 is pre-compressed. Is equal to or more than several times.
  • the thickness of the core material 2 before being housed in the outer packaging material 3 is the number of thicknesses of the core material 2 when the inside of the outer packaging material 3 is in a vacuum state. It is more than twice and less than several tens of times.
  • the outer packaging material 3 may be configured by processing the film 5a and the film 5b having a gas barrier property into a bag shape.
  • the mating surfaces around the core material 2 form a sealing region 30 that is fixed by heat welding.
  • the film 5a and the film 5b have a bag shape due to the sealing region 30.
  • the film 5 may be composed of, for example, a laminated film having a multilayer structure.
  • the film 5 may be a multilayer film body in which a resin film as a heat-welding layer that is heat-welded by heating and a metal film as a gas barrier layer that prevents gas permeation are laminated.
  • the adsorbent 4 is housed in the outer packaging material 3 together with the core material 2.
  • the adsorbent 4 may be composed of, for example, a bag having good air permeability and calcium oxide or the like inserted inside the bag.
  • the adsorbent 4 mainly adsorbs water in the outer packaging material 3.
  • the adsorbent 4 may be made of a substance having an adsorbing property to other gas other than water.
  • the adsorbent 4 may include a plurality of substances including a substance that adsorbs moisture as described above and a substance that adsorbs other gases.
  • the adsorbent 4 may be arranged inside the core material 2 as shown in FIG. 2, but may be arranged between the core material 2 and the outer packaging material 3.
  • the number of the adsorbent 4 may be one as shown in FIG. 2, but may be two or more.
  • the first sealing region 3aa is arranged along the outer peripheries of the films 5a and 5b and so as to surround the core material 2 in three directions.
  • the final sealing region 8 is located in one direction in the core material 2 not surrounded by the first sealing region 3aa, and is arranged to connect the ends of the first sealing region 3aa.
  • the second sealing region 3ab is arranged on the side opposite to the side where the first sealing region 3aa is located when viewed from the end of the final sealing region 8.
  • the second sealing area 3ab extends along the outer peripheries of the films 5a and 5b.
  • the auxiliary sealing area 6 is connected to the second sealing area 3ab.
  • the auxiliary sealing region 6 is arranged along one side of the film 5a and the film 5b extending along the extending direction of the final sealing region 8.
  • the opening 7 is arranged so as to be sandwiched between the two auxiliary sealing regions 6.
  • the opening 7 is a region where the film 5a and the film 5b are not fixed to each other on one side of the outer periphery of the film 5a and the film 5b where the auxiliary sealing region 6 is formed.
  • the sealing region 30 and the second sealing region 3ab are regions in which, in the films 5a and 5b that form the outer wrapping material 3, the portions facing each other across the space inside the outer wrapping material 3 are closely attached and fixed. is there.
  • the inside of the outer wrapping material 3 in which the core material 2 is arranged and the outside of the outer wrapping material 3 are airtightly divided by the sealing region 30.
  • a part of the film 5a and the film 5b which face each other with the space inside the outer packaging material 3 in between are closely fixed and fixed. Area.
  • the sealing region 30, the second sealing region 3ab, and the auxiliary sealing region 6 described above are regions where the film 5a and the film 5b are fixed to each other by, for example, heat welding. Any method can be adopted as a method of fixing the film 5a and the film 5b.
  • FIG. 4 is a flowchart for explaining the method of manufacturing the heat insulating member shown in FIG. 5 and 6 are schematic plan views for explaining the method of manufacturing the heat insulating member shown in FIG.
  • FIG. 7 is a schematic cross-sectional view for explaining the method of manufacturing the heat insulating member shown in FIG. A method of manufacturing the heat insulating member 1 shown in FIG. 1 will be described with reference to FIGS. 4 to 7.
  • the step of manufacturing the outer packaging material 3 is performed. Specifically, the film 5a and the film 5b (see FIG. 2) to be the outer packaging material 3 are processed into a bag shape to manufacture the outer packaging material 3 as shown in FIG. As shown in FIG. 5, in the outer packaging material 3, in the state where the rectangular films 5a and 5b are laminated, the peripheral edges of the three sides of the films 5a and 5b are heat-welded to form the initial sealing region 3a. To do. At the same time, both ends of the remaining one side of the film 5a and the film 5b are heat-welded to form the auxiliary sealing region 6. A part of one side of the film 5a and the film 5b located between the two auxiliary sealing regions 6 is an unfixed opening 7. The inside and outside of the outer packaging material 3 are connected to each other through the opening 7.
  • the core insertion step (S20) is performed.
  • the core material 2 is inserted into the outer packaging material 3 through the opening 7 as shown in FIG.
  • a drying step (S30) is carried out.
  • an object including the outer packaging material 3 and the core material 2 housed inside the outer packaging material 3 is put into a drying furnace.
  • the outer packaging material 3 is composed of the film 5a and the film 5b whose part of the peripheral edge is sealed by the initial sealing region 3a and the auxiliary sealing region 6 as described above.
  • the heating temperature in the drying furnace is set to a temperature about 10 to 20 ° C. lower than the lowest melting point of the constituent materials of the layers forming the films 5a and 5b. This prevents the films 5a and 5b from melting in the drying oven.
  • this step (S30) after the core material 2 contained in the outer packaging material 3 is put into the drying furnace, the outer packaging material 3 and the core material 2 are held in the drying furnace for several tens of minutes to several hours. Since the inside of the drying furnace is heated to the above-mentioned heating temperature, the outer wrapping material 3 and the core material 2 can be dried. As a result, the surface of the film 5 forming the outer packaging material 3 and the moisture adsorbed on the core material 2 can be separated from the outer packaging material 3 and the core material 2. When the moisture adsorbed on the surface of the film 5 and the core material 2 inside the outer packaging material 3 is released, the moisture is released to the outside of the outer packaging material 3 through the opening 7.
  • a step (S40) of installing the target object in the vacuum container is performed.
  • the object consisting of the outer packaging material 3 and the core material 2 is taken out from the drying furnace. And the said target object is installed in a vacuum container.
  • the adsorbent insertion step (S50) is performed.
  • the adsorbent 4 is inserted into the outer packaging material 3 through the opening 7.
  • the adsorbent 4 may be arranged inside the core material 2, or may be arranged at the boundary between the core material 2 and the inner surface of the outer packaging material 3.
  • the positioning process (S60) is performed.
  • this step (S60) the relative placement of the welding and sealing machine 22 with respect to the object is determined.
  • the welding and sealing machine 22 is arranged so as to sandwich the region where the final sealing region 8 (see FIG. 3) is to be formed between the auxiliary sealing region 6 and the core material 2.
  • a decompression process (S70) is carried out.
  • the inside of the vacuum container is decompressed.
  • the air inside the outer packaging material 3 is also released from the inside of the vacuum container through the opening 7.
  • the inside of the vacuum container is depressurized to a pressure at which a sealing step (S80) described below is performed.
  • the pressure is, for example, about several Pa.
  • the sealing step (S80) is carried out.
  • the welding sealing machine 22 installed in the vacuum container is used to form the film 5a and the film 5b forming the outer packaging material 3.
  • the final sealing region 8 is formed at a position between the auxiliary sealing region 6 and the core 2 as shown in FIG. As a result, the inside of the outer packaging material 3 is sealed in a vacuum state.
  • the heat insulating member 1 is manufactured through the above steps.
  • a heat insulating member 1 according to the present disclosure includes a core material 2 and a bag-shaped outer packaging material 3 that holds the core material 2 therein.
  • the inside of the outer packaging material 3 is decompressed as compared with the outside of the outer packaging material 3.
  • the outer packaging material 3 includes a sealing region 30 arranged so as to surround the core material 2, and an auxiliary sealing region 6 extending along a final sealing region 8 which is a part of the sealing region 30. ..
  • the auxiliary sealing region 6 is arranged on the outer peripheral side of the sealing region 30 in the outer packaging material 3.
  • the opening 7 is formed in a region located on the outer peripheral side of the sealing region 30.
  • the auxiliary sealing region 6 is arranged so as to sandwich the opening 7 in a direction along the extending direction of the final sealing region 8 which is a part of the sealing region 30.
  • auxiliary sealing region 6 in advance at the time of manufacturing the heat insulating member 1, in the vicinity of the auxiliary sealing region 6 at the time of forming the final sealing region 8 that easily constitutes the sealing region 30 described above.
  • the position shift of the film 5 of the outer packaging material 3 and the generation of wrinkles can be suppressed. Therefore, it is possible to suppress the generation of defective portions in the final sealing region 8. As a result, a highly reliable heat insulating member 1 can be obtained.
  • the method for manufacturing the heat insulating member 1 according to the present disclosure includes an outer packaging material manufacturing step (S10) and a core material insertion step (S20), which are steps of preparing a processing target, and the inside of the outer packaging material 3 in the processing target.
  • a depressurizing step (S70) that is a step of depressurizing and a sealing step (S80) that is a step of forming the final sealing region 8 are provided.
  • a processing target object including the bag-shaped outer packaging material 3 in which the opening 7 is formed and the core material 2 arranged inside the outer packaging material 3 is prepared.
  • the inside of the outer wrapping material 3 is decompressed from the outside of the outer wrapping material 3 along the opening 7 in the outer wrapping material 3.
  • the final sealing region 8 is formed so as to partition.
  • the sealing step (S80) of forming the final sealing region 8 is performed in a state where the auxiliary sealing region 6 extending along the region where the final sealing region 8 is to be formed is previously formed in the outer packaging material 3. Be implemented.
  • the auxiliary sealing region 6 is formed before the final sealing region 8 is formed. Since the auxiliary sealing region 6 is formed before the core material 2 is put into the outer packaging material 3, the auxiliary sealing region 6 can be formed in a state where the film 5a and the film 5b are in close contact with each other. Therefore, the auxiliary sealing region 6 can be formed in a state where the film 5a and the film 5b are not displaced. Therefore, in the films 5a and 5b, the relative displacement in the direction of the arrow 50 shown in FIG. 6 is restricted by the auxiliary sealing region 6. Therefore, also in the final sealing region 8, the film 5a and the film 5b can be heat-welded in a state in which the displacement between the films 5a and 5b is suppressed.
  • the displacement of both ends of the final sealing region 8 near the auxiliary sealing region 6 is strongly restricted. Therefore, it is possible to suppress the occurrence of defects at both ends of the final sealing region 8. With such an effect, according to the present embodiment, the reliability of the final sealing region 8 can be improved.
  • FIG. 8 is a schematic perspective view of a heat insulating member 101 as a comparative example of the present embodiment.
  • FIG. 9 is an enlarged schematic sectional view taken along the line segment IX-IX in FIG.
  • the heat insulating member 101 as the comparative example shown in FIGS. 8 and 9 basically has the same configuration as the heat insulating member 1 shown in FIG. 1, except that the auxiliary sealing region 6 is not formed. ing. Since the auxiliary sealing region 6 is not formed, when the films 105a and 105b are welded to form the final sealing region, a part of the film 105a is partially removed due to a positional shift or wrinkles of the film 105a.
  • the bent portion 120 that is welded in a bent state may be formed. In such a bent portion 120, sealing is insufficient, and air may enter the inside of the heat insulating member 101 via the bent portion 120. Such invasion of air causes deterioration of the heat insulating property of the heat insulating member 101.
  • the auxiliary sealing region 6 is formed in advance along the region of the outer wrapping material 3 where the final sealing region 8 is to be formed.
  • the part of the outer packaging material 3 in the region to be formed can be restrained by the auxiliary sealing region 6. Therefore, it is possible to prevent wrinkles and displacement from occurring in the outer packaging material 3 in the region where the final sealing region 8 is to be formed. As a result, it is possible to reduce the possibility that the film 5 of the outer packaging material 3 sealed in the final sealing region 8 is locally bent and the sealing is insufficient.
  • the highly reliable heat insulating member 1 can be provided.
  • the auxiliary sealing region 6 is arranged so as to sandwich the opening 7 in the direction along the extending direction of the final sealing region 8.
  • the final sealing area 8 is formed at a position close to the opening 7.
  • a region between the opening 7 and the final sealing region 8 in the outer packaging material 3 is connected to the outside of the outer packaging material 3 through the opening 7, and thus is used as an inner region in which the core material 2 is arranged. I can't. Therefore, by forming the final sealing region 8 at a position close to the opening 7 as described above, it is possible to reduce the size of the portion that cannot be used as the internal region as described above. As a result, it is not necessary to excessively increase the size of the outer packaging material 3 with respect to the size of the core material 2, and it is possible to suppress an increase in the manufacturing cost of the heat insulating member 1.
  • FIG. 10 is a schematic plan view of the heat insulating member according to the second embodiment.
  • the heat insulating member 1 shown in FIG. 10 has basically the same structure as the heat insulating member 1 shown in FIGS. 1 to 3, but the relative arrangement of the auxiliary sealing region 6 and the final sealing region 8 Is different from the heat insulating member 1 shown in FIGS.
  • the auxiliary sealing region 6 is arranged between the core material 2 and the final sealing region 8 which is a part of the sealing region 30 in the outer packaging material 3.
  • the auxiliary sealing region 6 is formed so as to protrude in a direction in which the final sealing region 8 extends from between a region facing the core material 2 and a region overlapping with the final sealing region 8 in the first sealing region 3aa. ing.
  • FIG. 11 is a schematic sectional view for explaining the method for manufacturing the heat insulating member shown in FIG.
  • a method of manufacturing the heat insulating member 1 shown in FIG. 10 will be described with reference to FIG. 11.
  • the method for manufacturing the heat insulating member 1 shown in FIG. 10 is basically the same as the method for manufacturing the heat insulating member shown in FIG.
  • the auxiliary sealing region 6 is the final packaging with the region in which the core material 2 is arranged in the outer packaging material 3. It is arranged between the area where the area 8 is formed.
  • the steps (S20) to (S50) are performed in the same manner as the method for manufacturing the heat insulating member according to the first embodiment.
  • the welding and sealing machine 22 for the object including the outer packaging material 3 and the core material 2 housed inside the outer packaging material 3 is positioned as shown in FIG.
  • the welding and sealing machine 22 is arranged so as to sandwich the region of the outer wrapping material 3 on the side opposite to the side on which the core material 2 is disposed as seen from the auxiliary sealing region 6.
  • the films 5a and 5b are overlapped in a flat state as shown in FIG.
  • the heat insulating member 1 shown in FIG. 10 can be obtained by performing the step (S70) and the step (S80) in FIG.
  • the auxiliary sealing region 6 is arranged between the core material 2 and the region where the final sealing region 8 is to be formed in the outer packaging material 3.
  • the film 5 a and the film 5 b of the outer packaging material 3 arranged so as to sandwich the core material 2 can be fixed by the auxiliary sealing region 6.
  • the film 5a and the film 5b are laminated because the auxiliary sealing region 6 is formed. Therefore, when the final sealing region 8 is formed, the film 5a and the film 5b can be easily aligned with each other.
  • the film 5a and the film 5b are oblique between the core material 2 and the auxiliary sealing region 6.
  • Welding and sealing machine 22 is arranged so as to sandwich this oblique region. Therefore, when the final sealing step (S80) is performed, that is, when the welding / sealing machine 22 is closed, the welding / sealing machine 22 contacts the film 5a and the film 5b that are inclined as described above. Then, the welding and sealing machine 22 presses and deforms these films 5a and 5b so that they are in surface contact with each other. At this time, there is a possibility that the film 5a and the film 5b are distorted and wrinkles are generated in the final sealing region 8.
  • the film 5a and the film 5b are constrained by the auxiliary sealing region 6, so that the film 5a on the peripheral side when viewed from the auxiliary sealing region 6 and the film 5a. 5b is in a state of closely adhering to a plane. Since the final sealing region 8 can be formed in the portions of the film 5a and the film 5b that are laminated in such a plane, it is possible to suppress the occurrence of wrinkles and the like in the final sealing region 8 and to perform the final sealing. The reliability of the area 8 can be improved.
  • FIG. 12 is a schematic plan view of the heat insulating member according to the third embodiment.
  • the heat insulating member 1 shown in FIG. 12 basically has the same structure as the heat insulating member 1 shown in FIGS. 1 to 3, but the structure of the opening 7 located between the auxiliary sealing regions 6 is different from that shown in FIG. It is different from the heat insulating member 1 shown in FIGS.
  • the opening 7 is formed by cutting a part of the outer periphery of the outer packaging material 3.
  • the opening 7 is a region in which a part of the outer periphery of the outer packaging material 3 is recessed in a rectangular shape in a plan view, and two films constituting the outer packaging material 3 are fixed to each other on the inner peripheral side of the recessed region. It can be opened without opening.
  • FIG. 13 is a flowchart for explaining the method of manufacturing the heat insulating member shown in FIG. 14 to 16 are schematic views for explaining the method of manufacturing the heat insulating member shown in FIG. 17 and 18 are schematic plan views for explaining the method for manufacturing the heat insulating member shown in FIG. 19 and 20 are schematic views for explaining the method for manufacturing the heat insulating member shown in FIG.
  • a method of manufacturing the heat insulating member shown in FIG. 12 will be described with reference to FIGS. 13 to 20.
  • a member preparation step (S110) is performed.
  • the core material 2 is arranged in a pressing machine for compression, and the film 5a and the film 5b are arranged so as to sandwich the core material 2.
  • the press machine includes a press section 11A and a press section 11B which are sections for compressing the core material 2 on which the film 5 is arranged.
  • the film 5b is arranged on the press part 11B.
  • the core material 2 is arranged on the film 5b.
  • the film 5 a is arranged on the core material 2.
  • the press part 11A is arranged on the press part 11B.
  • the press part 11A is movable relative to the press part 11B in the direction indicated by the arrow.
  • the welding and sealing machines 10a and 10b are arranged so as to surround the press parts 11A and 11B.
  • the film 5a and the film 5b are held by a tension maintaining device (not shown) so as to be flat without loosening.
  • the lower surface of the core material 2 contacts the upper surface of the film 5b.
  • the upper surface of the core material 2 contacts the lower surface of the film 5a.
  • it is installed on the press unit 11B in a state of being sandwiched between the film 5a and the film 5b.
  • the peripheral portions of the film 5a and the film 5b are not in contact with the core material 2.
  • a compression process (S120) is performed.
  • the press section 11A is relatively moved toward the press section 11B, and the core sandwiched between the films 5a and 5b as shown in FIG.
  • the material 2 is compressed.
  • the film 5a, the film 5b, and the core material 2 are compressed until the thickness of the core material 2 becomes about the same as the set value of the thickness of the heat insulating member 1 to be manufactured.
  • the first sealing step (S130) is performed.
  • this step (S130) as shown in FIG. 15, the welding and sealing machines 10a and 10b are used to heat and press the entire peripheries of the peripheral edges of the films 5a and 5b to be the outer packaging material 3.
  • the outer circumferences of the films 5a and 5b are heat-welded while the core material 2 is held therein.
  • the film 5a and the film 5b become the bag-shaped outer wrapping material 3 (see FIG. 16) in which the outer peripheral portions are welded to form the initial sealing region 3a.
  • the step (S120) and the step (S130) may be performed at the same time, or the step (S130) may be performed after the step (S120).
  • the decompression process (S140) is performed.
  • this step (S140) the compression of the outer packaging material 3 and the core material 2 by the pressing machine is released. Even after the compression is released, the volume of the core material 2 expands (restores) to some extent, but the compressed state is maintained. This is for the following reason. That is, the volume inside the outer packaging material 3 increases due to the restoring force of the core material 2, and the atmospheric pressure inside the outer packaging material 3 decreases. Then, when the pressure difference between the atmospheric pressure outside the outer packaging material 3 and the pressure inside the outer packaging material 3 balances the restoring force of the core material 2, the restoration of the core material 2 stops.
  • the step of installing the target object in the vacuum container (S150) is performed.
  • an object including the core material 2 and the outer packaging material 3 in which the core material 2 is arranged is arranged inside the vacuum container 20 as shown in FIG.
  • the target object is inserted between the pair of restriction plates 21 installed in the vacuum container 20.
  • the regulation plate 21 is arranged at a predetermined interval so that the object can be easily inserted and the restoration of the thickness of the core material 2 after cutting the outer packaging material 3 in the cutting step (S160) described later can be regulated.
  • the distance between the pair of regulation plates 21 may be about 1.5 times to several times the thickness of the object.
  • the cutting process (S160) is performed.
  • the outer packaging material 3 is cut and opened at the cutting position 9 shown in FIG.
  • the opening 7 is formed in the cut portion as shown in FIG.
  • the portion of the initial sealing region 3a at a position sandwiching the opening 7 becomes the auxiliary sealing region 6.
  • the adsorbent insertion step (S170) is performed.
  • this step (S170) as shown in FIG. 19, the adsorbent 4 is inserted into the outer packaging material 3 through the opening 7 (see FIG. 18).
  • the positioning process (S180) is performed.
  • this step (S180) as shown in FIG. 19, the edges of the outer wrapping material 3 in which the opening 7 (see FIG. 18) and the auxiliary sealing region 6 are formed are positioned with respect to the welding and sealing machine 22. ..
  • the welding and sealing machine 22 is arranged at a position facing the regions of the film 5a and the film 5b between the auxiliary sealing region 6 and the core material 2.
  • step (S190) and the second sealing step (S200) are performed.
  • This step (S190) and step (S200) are the same as the depressurizing step (S70) and sealing step (S80) shown in FIG. 4, respectively. That is, in the step (S200), the final sealing region 8 is formed by welding the film 5a and the film 5b by the welding and sealing machine 22 in the region between the auxiliary sealing region 6 and the core material 2. ..
  • the final sealing region 8 formed by heat welding in the second sealing step (S200) is formed at a position between the opening 7 and the core 2 as shown in FIG. In this way, the heat insulating member 1 shown in FIG. 12 can be manufactured.
  • the preparing step is a step of disposing the films 5a and 5b to be the outer packaging material 3 so as to sandwich the core material 2 between the member preparing step (S110) and the films 5a and 5b.
  • the first sealing step (S130) which is a step of forming the initial sealing area 3a in the area surrounding the core material 2, and removing a part of the films 5a and 5b including a part of the initial sealing area 3a. Therefore, the cutting process (S160) which is a process of forming the opening 7 is included.
  • the auxiliary sealing region 6 is a part of the initial sealing region 3a adjacent to the opening 7.
  • the degree of freedom in designing the heat insulating member 1 can be increased by, for example, making the opening 7 large enough to allow gas to flow when decompressing the inside of the outer packaging material 3.
  • the core material 2 is compressed while being sandwiched between the film 5a and the film 5b, and the entire circumference (4 sides) of the peripheral edge portion of the outer packaging material 3 is welded using the welding and sealing machines 10a and 10b. ) Is heat-welded by applying heat and pressure. Therefore, the thickness of the core material 2 is smaller than that in the case where the outer packaging material 3 and the core material 2 are arranged and welded in the vacuum container 20, and the peripheral edge of the outer packaging material 3 is substantially free from looseness in the films 5a and 5b. Since the parts are heat-welded, the initial sealing region 3a can be formed in a state in which the deviation is smaller than in the case where the heat-welding is performed in the vacuum container 20.
  • a part of one side of the outer periphery of the outer packaging material 3 in which the initial sealing region 3a is formed is cut off to form the opening 7. Then, a final sealing region 8 is formed between the opening 7 and the core material 2. Therefore, similarly to the first embodiment, the influence of the displacement of the films 5a and 5b when forming the final sealing region 8 can be suppressed, and the highly reliable final sealing region 8 can be formed. Further, in the present embodiment, since the core material 2 can be arranged inside the outer packaging material 3 without being restricted by the size of the opening 7, a high-performance vacuum heat insulating material can be easily obtained.
  • FIG. 21 is a schematic plan view of the heat insulating member according to the fourth embodiment.
  • the heat insulating member 1 shown in FIG. 12 basically has the same configuration as the heat insulating member 1 shown in FIGS. 1 to 3, but the auxiliary sealing region 6 and the opening have the same shape as those shown in FIGS. It is different from the heat insulating member 1 shown.
  • the slit 19 is formed as an opening.
  • the slit 19 is formed by making a cut in the film of the outer packaging material 3.
  • the auxiliary sealing region 6 is formed so as to extend to one side of the outer wrapping material 3 where the slit 19 is formed.
  • the auxiliary sealing region 6 is arranged on the outer peripheral side of the sealing region 30.
  • a slit 19 as an opening is formed in a region located on the outer peripheral side of the sealing region 30.
  • the auxiliary sealing region 6 is a part of the outer peripheral sealing region 40 which is continuous with the sealing region 30 and surrounds the slit 19 which is an opening.
  • the outer peripheral sealing region 40 includes two second sealing regions 3ab that are continuous with the sealing region 30 and an auxiliary sealing region 6 that connects the two second sealing regions 3ab.
  • ⁇ Method of manufacturing heat insulating member> 22 is a schematic plan view for explaining the method for manufacturing the heat insulating member shown in FIG.
  • the method for manufacturing the heat insulating member shown in FIG. 21 is basically the same as the method for manufacturing the heat insulating member shown in FIG. 13, but the content of the cutting step (S160) is the method for manufacturing the heat insulating member shown in FIG. Is different from That is, in the method for manufacturing a heat insulating member shown in FIG. 21, as a cutting step (S160), a slit 19 as an opening is formed by cutting a part of the outer packaging material 3 at a cutting position 9 shown by a dotted line in FIG. To form.
  • the other steps are the same as the method for manufacturing the heat insulating member shown in FIG.
  • the auxiliary sealing region 6 is arranged on the outer peripheral side of the sealing region 30.
  • a slit 19 as an opening is formed in a region located on the outer peripheral side of the sealing region 30.
  • the auxiliary sealing region 6 is a part of the outer peripheral sealing region 40 which is continuous with the sealing region 30 and surrounds the slit 19 which is an opening. In this case, the same effect as that of the heat insulating member 1 according to the third embodiment shown in FIG. 12 can be obtained.
  • the preparing step is a step of disposing the films 5a and 5b to be the outer packaging material 3 so as to sandwich the core material 2, and a member preparing step (S110) and the films 5a and 5b.
  • the first sealing step (S130) which is a step of forming the initial sealing region 3a in the region surrounding the core material 2, in the region located between the initial sealing region 3a and the core material 2, cut into the film.
  • a step of forming an opening by forming the slit 19 (cutting step (S160)).
  • the auxiliary sealing region 6 is a part of the initial sealing region 3a located on the opposite side of the core material 2 when viewed from the slit 19 which is the opening.
  • the second sealing step (S200) which is a step of forming the final sealing region 8, the final sealing region 8 is formed in a region located between the slit 19 which is the opening and the core material 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)

Abstract

L'invention concerne un élément d'isolation thermique hautement fiable. Un élément d'isolation thermique (1) comprend : un matériau de noyau (2) ; et un matériau d'emballage externe (2) en forme de sac qui maintient le matériau de noyau (2) à l'intérieur de celui-ci. La pression à l'intérieur du matériau d'emballage externe (3) est réduite par rapport à l'extérieur du matériau d'emballage externe (3). Le matériau d'emballage externe (3) comprend : une région d'étanchéité (30) disposée de manière à entourer le matériau de noyau (2) ; et une région d'étanchéité auxiliaire (6) qui s'étend le long d'une région d'étanchéité finale (8) qui fait partie de la région d'étanchéité (30). L'élément d'isolation thermique (1) hautement fiable est obtenu par formation de la région d'étanchéité auxiliaire (6) dans l'élément d'isolation thermique (1) tel que décrit ci-dessus.
PCT/JP2019/043964 2018-11-08 2019-11-08 Élément d'isolation thermique et son procédé de fabrication WO2020096052A1 (fr)

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JP2005315310A (ja) * 2004-04-28 2005-11-10 Hitachi Home & Life Solutions Inc 真空断熱パネル及び製造方法
JP2010276171A (ja) * 2009-05-29 2010-12-09 Hitachi Appliances Inc 真空断熱材及びその製造方法
JP2018096388A (ja) * 2016-12-08 2018-06-21 三菱電機株式会社 断熱部材およびその製造方法

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US20040074208A1 (en) * 2000-05-30 2004-04-22 Advantek, Inc. Vacuum insulation panels and method for making same
JP2010242875A (ja) * 2009-04-07 2010-10-28 Kurabo Ind Ltd 真空断熱材の製造方法および該製造方法によって作製された真空断熱材
CN102102796B (zh) * 2010-03-12 2012-10-17 福建赛特新材股份有限公司 一种真空绝热板及其制备方法
CN103968191A (zh) * 2013-01-28 2014-08-06 苏州维艾普新材料有限公司 一种芯材裁边处理的真空绝热板及其制备方法
JP6253534B2 (ja) * 2014-07-09 2017-12-27 三菱電機株式会社 真空断熱材の製造方法、及びその製造方法で製造された真空断熱材

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Publication number Priority date Publication date Assignee Title
JP2005315310A (ja) * 2004-04-28 2005-11-10 Hitachi Home & Life Solutions Inc 真空断熱パネル及び製造方法
JP2010276171A (ja) * 2009-05-29 2010-12-09 Hitachi Appliances Inc 真空断熱材及びその製造方法
JP2018096388A (ja) * 2016-12-08 2018-06-21 三菱電機株式会社 断熱部材およびその製造方法

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