WO2020096052A1 - Thermal insulation member and method for manufacturing same - Google Patents

Thermal insulation member and method for manufacturing same 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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WO
WIPO (PCT)
Prior art keywords
sealing region
outer packaging
packaging material
region
heat insulating
Prior art date
Application number
PCT/JP2019/043964
Other languages
French (fr)
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
Publication date
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/en
Priority to JP2020555645A priority patent/JP7264912B2/en
Publication of WO2020096052A1 publication Critical patent/WO2020096052A1/en

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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

Provided is a highly reliable thermal insulation member. A thermal insulation member (1) comprises: a core material (2); and a bag-shaped outer packaging material (3) that holds the core material (2) therein. The pressure inside of the outer packaging material (3) is reduced 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 highly reliable thermal insulation member (1) is obtained by forming the auxiliary sealing region (6) in the thermal insulation member (1) as described above.

Description

断熱部材およびその製造方法Heat insulating member and manufacturing method thereof
　本発明は、断熱部材およびその製造方法に関する。 The present invention relates to a heat insulating member and a manufacturing method thereof.
　従来、ラミネートフィルムなどからなる袋状の外包材と、当該外包材の内部に減圧された状態で封止された芯材とからなる断熱部材が知られている。断熱部材の製造方法としては、たとえばラミネートフィルムなどからなる袋状の外包材の内部に乾燥した芯材を配置し、外包材の内部をほぼ真空状態にまで減圧した状態で当該外包材の開口部を熱溶着し密閉封止する、といった方法が知られている（たとえば特許第３５８０３１５号公報参照）。 Conventionally, 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 is known. As 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. There is known a method of heat-sealing and hermetically sealing (see, for example, Japanese Patent No. 3580315).
特許第３５８０３１５号公報Japanese Patent No. 3580315
　上述した断熱部材の製造方法においては、外包材の開口部を封止する際に、当該封止部において外包材を構成するフィルムが局所的に折れ曲がった状態となる場合があった。これは、外包材に対する熱溶着するためのシール機に対して外包材を位置決めするときの位置ずれ、外包材の内部を減圧する時の気体の流れ、シール機の動作など様々な要因により、外包材において封止される部分に位置ずれやしわなどが発生するためである。 In the method for manufacturing the heat insulating member described above, when the opening of the outer packaging material is sealed, 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.
　このように封止部におけるフィルムが折れ曲がった状態である場合、当該折れ曲がった部分でのフィルムの溶着が不十分となり、封止後に外包材の内部に空気が侵入する場合がある。このような空気の侵入により、外包材の内部の真空度が低下し、結果的に断熱部材の断熱性能が低下する、あるいは断熱部材自体が膨張・変形するといった不具合が発生し、断熱部材の信頼性が低下する場合があった。 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.
　この発明は、上記のような課題を解決するためになされたものであり、信頼性の高い断熱部材を提供することを目的とする。 The present invention has been made to solve the above problems, and an object thereof is to provide a highly reliable heat insulating member.
　本開示に従った断熱部材の製造方法は、処理対象物を準備する工程と、処理対象物における外包材の内部を減圧する工程と、最終封止領域を形成する工程とを備える。処理対象物を準備する工程では、開口部が形成された袋状の外包材と、当該外包材の内部に配置された芯材とを含む処理対象物を準備する。最終封止領域を形成する工程では、外包材の内部が減圧された状態で、外包材において開口部に沿って外包材の内部を外包材の外部から区画するように最終封止領域を形成する。最終封止領域を形成する工程は、外包材において、最終封止領域が形成されるべき領域に沿って延在する補助封止領域が予め形成された状態で実施される。 A method for manufacturing a heat insulating member according to the present disclosure 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. In the step of preparing the processing target object, 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. In the step of forming the final sealing region, 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.
　本開示に従った断熱部材は、芯材と、当該芯材を内部に保持する袋状の外包材とを備える。外包材の内部は外包材の外部と比べて減圧されている。外包材は、芯材を囲むように配置された封止領域と、当該封止領域の一部に沿って延在する補助封止領域とを含む。 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.
　上記によれば、補助封止領域を形成することにより信頼性の高い断熱部材が得られる。 According to the above, a highly reliable heat insulating member can be obtained by forming the auxiliary sealing region.
実施の形態１に係る断熱部材の斜視模式図である。FIG. 3 is a schematic perspective view of a heat insulating member according to the first embodiment. 図１の線分ＩＩ－ＩＩにおける断面模式図である。FIG. 2 is a schematic sectional view taken along line II-II in FIG. 1. 図１に示した断熱部材の平面模式図である。It is a plane schematic diagram of the heat insulation member shown in FIG. 図１に示した断熱部材の製造方法を説明するためのフローチャートである。6 is a flowchart for explaining a method of manufacturing the heat insulating member shown in FIG. 1. 図４に示した断熱部材の製造方法を説明するための平面模式図である。FIG. 6 is a schematic plan view for explaining the method for manufacturing the heat insulating member shown in FIG. 4. 図４に示した断熱部材の製造方法を説明するための平面模式図である。FIG. 6 is a schematic plan view for explaining the method for manufacturing the heat insulating member shown in FIG. 4. 図４に示した断熱部材の製造方法を説明するための断面模式図である。FIG. 6 is a schematic cross-sectional view for explaining the method of manufacturing the heat insulating member shown in FIG. 4. 本実施の形態の比較例としての断熱部材の斜視模式図である。It is a perspective schematic diagram of the heat insulation member as a comparative example of this Embodiment. 図８の線分ＩＸ－ＩＸにおける拡大断面模式図である。FIG. 9 is an enlarged schematic sectional view taken along line IX-IX in FIG. 8. 実施の形態２に係る断熱部材の平面模式図である。7 is a schematic plan view of a heat insulating member according to Embodiment 2. FIG. 図１０に示した断熱部材の製造方法を説明するための断面模式図である。FIG. 11 is a schematic cross-sectional view for explaining the method of manufacturing the heat insulating member shown in FIG. 10. 実施の形態３に係る断熱部材の平面模式図である。It is a plane schematic diagram of the heat insulation member which concerns on Embodiment 3. 図１２に示した断熱部材の製造方法を説明するためのフローチャートである。13 is a flowchart for explaining a method of manufacturing the heat insulating member shown in FIG. 12. 図１３に示した断熱部材の製造方法を説明するための模式図である。It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. 図１３に示した断熱部材の製造方法を説明するための模式図である。It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. 図１３に示した断熱部材の製造方法を説明するための模式図である。It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. 図１３に示した断熱部材の製造方法を説明するための平面模式図である。It is a plane schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. 図１３に示した断熱部材の製造方法を説明するための平面模式図である。It is a plane schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. 図１３に示した断熱部材の製造方法を説明するための模式図である。It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. 図１３に示した断熱部材の製造方法を説明するための模式図である。It is a schematic diagram for demonstrating the manufacturing method of the heat insulation member shown in FIG. 実施の形態４に係る断熱部材の平面模式図である。It is a plane schematic diagram of the heat insulation member which concerns on Embodiment 4. 図２１に示した断熱部材の製造方法を説明するための平面模式図である。FIG. 22 is a schematic plan view for explaining the method for manufacturing the heat insulating member shown in FIG. 21.
　以下、図面に基づいて本発明の実施の形態について説明する。なお、以下の図面において同一または相当する部分には同一の参照番号を付しその説明は繰返さない。なお、以下の図面では各構成要素の大きさの関係が実際のものとは異なる場合がある。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts will be denoted by the same reference numerals and the description thereof will not be repeated. In the drawings below, the size relationship of each component may differ from the actual one.
　実施の形態１．
　＜断熱部材の構成＞
　図１は、実施の形態１に係る断熱部材の斜視模式図である。図２は、図１の線分ＩＩ－ＩＩにおける断面模式図である。図３は、図１に示した断熱部材の平面模式図である。 Embodiment 1.
<Structure of heat insulating member>
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.
　図１～図３に示した断熱部材１は、真空断熱材であって、芯材２と、当該芯材２を内部に保持する袋状の外包材３と、外包材３の内部に配置された吸着剤４とを備える。芯材２は、たとえばグラスファイバーの集合体である。外包材３の内部は外包材３の外部と比べて減圧されている。外包材３の内部は、たとえば数Ｐａ程度に減圧されている。外包材３は、芯材２を囲むように配置された封止領域３０と、当該封止領域３０の一部である最終封止領域８に沿って延在する補助封止領域６とを含む。外包材３の内部は封止領域３０により気密に密封されている。 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.
　上記断熱部材１では、外包材３において、補助封止領域６は封止領域３０より外周側に配置される。封止領域３０は第１封止領域３ａａと最終封止領域８とからなる。補助封止領域６は、第２封止領域３ａｂにより封止領域３０と接続されている。外包材３において、封止領域３０より外周側に位置する領域に開口部７が形成されている。補助封止領域６は、封止領域３０の一部である最終封止領域８の伸びる方向に沿った方向において開口部７を挟むように配置されている。 In the heat insulating member 1, 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. In the outer wrapping 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.
　芯材２は、たとえば、グラスファイバーの集合体を複数積み重ねることで構成してもよい。このようにグラスファイバーなどの繊維の集合体により芯材２を構成することで、芯材２自体の熱伝導による熱の漏洩を抑制できる。特に、上述した繊維の集合体として、内部の空間の割合が大きく、外包材３の内部が真空化された後も当該空間を維持できるものを用いることが好ましい。図２および図３に示すように、芯材２は外包材３によって被覆されている。芯材２は、外包材３の内部が数Ｐａ程度に減圧された状態（以下、真空状態とも呼ぶ）では、外包材３を通して大気圧によって圧縮されている。外包材３に収容される前の状態の芯材２の厚みは、外包材３の内部を真空状態とした場合の芯材２の厚みと比較すると相対的に大きくなっている。たとえば、外包材３に収容される前の状態における芯材２の厚みは、当該芯材２が予備圧縮されていた場合には外包材３の内部を真空状態とした場合の芯材２の厚みと同等以上数倍以下となる。また、当該芯材が予備圧縮されていない場合には、外包材３に収容される前の芯材２の厚みは、外包材３の内部を真空状態とした場合の芯材２の厚みの数倍以上数１０倍以下となる。 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. In particular, it is preferable to use, as the above-mentioned fiber aggregate, one having a large proportion of the internal space and capable of maintaining the space even after the inside of the outer packaging material 3 is evacuated. As shown in FIGS. 2 and 3, 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. For example, 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. When the core material is not pre-compressed, 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.
　外包材３は、ガスバリア性を有するフィルム５ａおよびフィルム５ｂが袋状に加工されて構成されていてもよい。フィルム５ａおよびフィルム５ｂでは、芯材２の周囲における互いの合わせ面が熱溶着によって固着された封止領域３０を構成する。フィルム５ａおよびフィルム５ｂは当該封止領域３０により袋状となっている。 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. In the film 5a and the film 5b, 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.
　なお、以下の説明においては、フィルム５ａおよびフィルム５ｂを総称してフィルム５とも呼ぶ。フィルム５は、たとえば多層構造を有するラミネートフィルムにより構成してもよい。たとえば、フィルム５は、加熱により熱溶着する熱溶着層としての樹脂フィルムと、気体の透過を防止するガスバリア層としての金属フィルムを積層した多層フィルム体であってもよい。 Note that, in the following description, the film 5a and the film 5b are also collectively referred to as the film 5. The film 5 may be composed of, for example, a laminated film having a multilayer structure. For example, 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.
　吸着剤４は、芯材２とともに外包材３内に収容されている。吸着剤４は、たとえば通気性の良い袋と、当該袋の内部に挿入された酸化カルシウムなどとから構成されてもよい。吸着剤４は、主に外包材３内の水分を吸着する。吸着剤４は、水分以外のその他のガスに対して吸着性を有する物質により構成されていてもよい。吸着剤４は、上記のような水分を吸着する物質と、その他のガスを吸着する物質とを含む複数の物質を含んでいてもよい。吸着剤４は、図２に示すように芯材２の内部に配置されていてもよいが、芯材２と外包材３との間に配置されていてもよい。吸着剤４の数は図２に示すように１つでもよいが、２以上の複数であってもよい。 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.
　なお、第１封止領域３ａａは、フィルム５ａおよびフィルム５ｂの外周に沿って配置されるとともに、芯材２の３方向を囲むように配置されている。最終封止領域８は、芯材２において第１封止領域３ａａにより囲まれていない１方向に位置し、第１封止領域３ａａの端部同士を接続するように配置されている。最終封止領域８の端部から見て、第１封止領域３ａａが位置する側と反対側に第２封止領域３ａｂが配置されている。第２封止領域３ａｂは、フィルム５ａおよびフィルム５ｂの外周に沿って伸びている。補助封止領域６は、第２封止領域３ａｂと接続されている。補助封止領域６は、最終封止領域８の延在方向に沿って延びるフィルム５ａおよびフィルム５ｂの１辺に沿って配置されている。２つの補助封止領域６に挟まれるように開口部７が配置されている。開口部７はフィルム５ａとフィルム５ｂとの外周部のうち補助封止領域６が形成された一辺において、フィルム５ａとフィルム５ｂとが互いに固着されていない領域である。 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.
　なお、封止領域３０および第２封止領域３ａｂは、外包材３を構成するフィルム５ａおよびフィルム５ｂにおいて、当該外包材３の内部の空間を挟んで対向する部分が密着し固定された領域である。当該封止領域３０によって芯材２が配置された外包材３の内部と外包材３の外部とが気密に区画される。また、補助封止領域６は、最終封止領域８が形成されるべき領域に沿って、外包材３の内部の空間を挟んで対向するフィルム５ａおよびフィルム５ｂの一部が密着して固定された領域である。上述した封止領域３０と第２封止領域３ａｂと補助封止領域６とは、たとえば熱溶着によりフィルム５ａとフィルム５ｂとが固着した領域である。なお、フィルム５ａとフィルム５ｂとを固着させる方法としては任意の方法を採用できる。 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. Further, in the auxiliary sealing region 6, along the region where the final sealing region 8 is to be formed, 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.
　＜断熱部材の製造方法＞
　図４は、図１に示した断熱部材の製造方法を説明するためのフローチャートである。図５および図６は、図４に示した断熱部材の製造方法を説明するための平面模式図である。図７は、図４に示した断熱部材の製造方法を説明するための断面模式図である。図４～図７を参照しながら、図１に示した断熱部材１の製造方法を説明する。 <Method of manufacturing heat insulating member>
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.
　図４に示すように、断熱部材１の製造方法では、まず外包材３の製作工程（Ｓ１０）を実施する。具体的には、外包材３となるフィルム５ａおよびフィルム５ｂ（図２参照）を袋状に加工し、図５に示すような外包材３を製作する。図５に示すように、外包材３では矩形状のフィルム５ａおよびフィルム５ｂを積層した状態で、当該フィルム５ａおよびフィルム５ｂの３辺の周縁部を熱溶着することにより初期封止領域３ａを形成する。また、同時にフィルム５ａおよびフィルム５ｂの残りの１辺の両端部を熱溶着することにより、補助封止領域６を形成する。２つの補助封止領域６の間に位置するフィルム５ａおよびフィルム５ｂの一辺の部分は固着していない開口部７となっている。開口部７を介して、外包材３の内部と外部とが繋がっている。 As shown in FIG. 4, in the method of manufacturing the heat insulating member 1, first, the step of manufacturing the outer packaging material 3 (S10) 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.
　次に、芯材の挿入工程（Ｓ２０）を実施する。この工程（Ｓ２０）では、開口部７を介して図６に示すように外包材３の内部に芯材２を挿入する。 Next, the core insertion step (S20) is performed. In this step (S20), the core material 2 is inserted into the outer packaging material 3 through the opening 7 as shown in FIG.
　次に、乾燥工程（Ｓ３０）を実施する。この工程（Ｓ３０）では、外包材３と当該外包材３の内部に収容されている芯材２とからなる対象物を、乾燥炉内に投入する。外包材３は、上述のように周縁部の一部が初期封止領域３ａおよび補助封止領域６によりシールされたフィルム５ａおよびフィルム５ｂからなる。このとき、乾燥炉内の加熱温度は、フィルム５ａ及びフィルム５ｂを構成する各層の構成材料の融点のうち、最も低いものに対して１０℃～２０℃程度低い温度に設定されている。これにより、フィルム５ａ及びフィルム５ｂが乾燥炉内で溶融してしまうことを防止している。 Next, a drying step (S30) is carried out. In this step (S30), 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. At this time, 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.
　この工程（Ｓ３０）では、外包材３に収容されている芯材２を乾燥炉に投入後、数十分から数時間ほど乾燥炉内に外包材３および芯材２を保持する。乾燥炉の内部は上述した加熱温度に加熱されているため、外包材３及び芯材２を乾燥させることができる。この結果、外包材３を構成するフィルム５の表面、及び芯材２に吸着している水分などを、当該外包材３および芯材２から離脱させることができる。なお、外包材３の内部においてフィルム５の表面、及び芯材２に吸着している水分が離脱すると、開口部７を介して外包材３の外部へその水分は放出される。したがって、後述するように、外包材３の内部が真空状態に減圧された状態で外包材３を封止する真空包装工程後に、外包材３内で水分などのガスが芯材２などから離脱することを抑制できる。すなわち、外包材３の内部におけるガス分子の運動による熱の伝達を抑制できる。この結果、断熱部材１の断熱性が低減してしまうことを抑制できる。 In 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. Therefore, as will be described later, after the vacuum packaging step of sealing the outer packaging material 3 in a state where the inside of the outer packaging material 3 is depressurized to a vacuum state, gas such as moisture is released from the core material 2 and the like in the outer packaging material 3. Can be suppressed. That is, heat transfer due to the movement of gas molecules inside the outer packaging material 3 can be suppressed. As a result, it is possible to prevent the heat insulating property of the heat insulating member 1 from being reduced.
　次に、対象物を真空容器内に設置する工程（Ｓ４０）を実施する。この工程（Ｓ４０）では、外包材３と芯材２とからなる対象物を乾燥炉から取り出す。そして、当該対象物を真空容器内に設置する。 Next, a step (S40) of installing the target object in the vacuum container is performed. In this step (S40), 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.
　次に、吸着剤の挿入工程（Ｓ５０）を実施する。この工程（Ｓ５０）では、真空容器内に対象物を設置した後に、開口部７を介して外包材３内に吸着剤４を挿入する。吸着剤４は、芯材２の内部に配置してもよいが、芯材２と外包材３の内面との境界部に配置してもよい。 Next, the adsorbent insertion step (S50) is performed. In this step (S50), after placing the object in the vacuum container, 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.
　次に、位置決め工程（Ｓ６０）を実施する。この工程（Ｓ６０）では、対象物に対する溶着シール機２２の相対的な配置を決定する。図７に示すように、溶着シール機２２は補助封止領域６と芯材２との間において最終封止領域８（図３参照）が形成されるべき領域を挟むように配置される。 Next, the positioning process (S60) is performed. In this step (S60), the relative placement of the welding and sealing machine 22 with respect to the object is determined. As shown in FIG. 7, 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.
　次に、減圧行程（Ｓ７０）を実施する、この行程（Ｓ７０）では、真空容器の内部を減圧する。真空容器２０内が減圧されるのに伴い、外包材３内の空気も開口部７を介して真空容器内から放出される。真空容器の内部は、後述する封止行程（Ｓ８０）を実施する圧力にまで減圧される。当該圧力はたとえば数Ｐａ程度である。 Next, a decompression process (S70) is carried out. In this process (S70), the inside of the vacuum container is decompressed. As the inside of the vacuum container 20 is depressurized, 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.
　次に、封止行程（Ｓ８０）を実施する。この行程（Ｓ８０）では、上述のように真空容器内が十分に減圧された状態で、真空容器内に設置されている溶着シール機２２を用いて、外包材３を構成するフィルム５ａ、フィルム５ｂを熱溶着し、最終封止領域８を形成することで封止する。最終封止領域８は、図３に示すように補助封止領域６と芯材２との間の位置に形成される。この結果、外包材３の内部は真空状態で封止される。 Next, the sealing step (S80) is carried out. In this step (S80), with the inside of the vacuum container being sufficiently depressurized as described above, 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. Are heat-welded to form the final sealing region 8 for sealing. 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.
　その後、真空容器を大気開放し、真空容器中から最終封止領域８が形成された対象物を取り出す。以上のような工程により断熱部材１は製造される。 After that, the vacuum container is opened to the atmosphere, and the object in which the final sealed area 8 is formed is taken out from the vacuum container. The heat insulating member 1 is manufactured through the above steps.
　＜作用効果＞
　本開示に従った断熱部材１は、芯材２と、当該芯材２を内部に保持する袋状の外包材３とを備える。外包材３の内部は外包材３の外部と比べて減圧されている。外包材３は、芯材２を囲むように配置された封止領域３０と、当該封止領域３０の一部である最終封止領域８に沿って延在する補助封止領域６とを含む。 <Effect>
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. ..
　上記断熱部材１では、外包材３において、補助封止領域６は封止領域３０より外周側に配置される。外包材３において、封止領域３０より外周側に位置する領域に開口部７が形成されている。補助封止領域６は、封止領域３０の一部である最終封止領域８の伸びる方向に沿った方向において開口部７を挟むように配置されている。 In the heat insulating member 1, the auxiliary sealing region 6 is arranged on the outer peripheral side of the sealing region 30 in the outer packaging material 3. In the outer wrapping 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.
　この場合、断熱部材１の製造時に補助封止領域６を予め形成しておくことで、上述した容易に封止領域３０を構成する最終封止領域８の形成時に当該補助封止領域６の近傍における外包材３のフィルム５の位置ずれやしわの発生を抑制できる。このため、最終封止領域８において不良部の発生を抑制できる。この結果、信頼性の高い断熱部材１を得ることができる。 In this case, by forming the 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.
　本開示に従った断熱部材１の製造方法は、処理対象物を準備する工程である外包材の製作工程（Ｓ１０）および芯材の挿入工程（Ｓ２０）と、処理対象物における外包材３の内部を減圧する工程である減圧工程（Ｓ７０）と、最終封止領域８を形成する工程である封止工程（Ｓ８０）とを備える。処理対象物を準備する工程では、開口部７が形成された袋状の外包材３と、当該外包材３の内部に配置された芯材２とを含む処理対象物を準備する。最終封止領域８を形成する封止工程（Ｓ８０）では、外包材３の内部が減圧された状態で、外包材３において開口部７に沿って外包材３の内部を外包材３の外部から区画するように最終封止領域８を形成する。最終封止領域８を形成する封止工程（Ｓ８０）は、外包材３において、最終封止領域８が形成されるべき領域に沿って延在する補助封止領域６が予め形成された状態で実施される。 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. In the step of preparing the processing target object, 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. In the sealing step (S80) of forming the final sealing region 8, 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.
　上記断熱部材１の製造方法では、最終封止領域８を形成する前に補助封止領域６を形成している。この補助封止領域６は芯材２を外包材３内に投入する前に形成するため、フィルム５ａとフィルム５ｂとが密着した状態で当該補助封止領域６を形成できる。このため、フィルム５ａおよびフィルム５ｂのずれが無い状態で補助封止領域６を形成できる。よって、フィルム５ａとフィルム５ｂでは、補助封止領域６によって図６に示す矢印５０の方向の相対的な変位を規制される。このため、最終封止領域８についても、フィルム５ａとフィルム５ｂとのずれが抑制された状態で熱溶着することができる。特に補助封止領域６近傍である最終封止領域８の両端部の変位が強く規制される。このため、当該最終封止領域８の両端部での不良の発生を抑制できる。このような効果により、本実施の形態によれば最終封止領域８の信頼性を向上させることができる。 In the method of manufacturing the heat insulating member 1, 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. In particular, 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.
　ここで、図８は本実施の形態の比較例としての断熱部材１０１の斜視模式図である。図９は、図８の線分ＩＸ－ＩＸにおける拡大断面模式図である。図８および図９に示した比較例としての断熱部材１０１は、基本的には図１に示した断熱部材１と同様の構成を備えるが、補助封止領域６が形成されていない点が異なっている。当該補助封止領域６が形成されていないため、フィルム１０５ａ、１０５ｂを溶着させて最終封止領域を形成する場合に、フィルム１０５ａの位置ずれやしわなどに起因して、フィルム１０５ａの一部が折れ曲がった状態で溶着された折れ曲がり部１２０が形成される場合がある。このような折れ曲がり部１２０では封止が不十分となり、断熱部材１０１の内部に当該折れ曲がり部１２０を介して空気が侵入する可能性がある。このような空気の侵入は、断熱部材１０１の断熱特性の劣化の要因となる。 Here, 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.
　一方、本開示に従った断熱部材１では、外包材３において最終封止領域８が形成されるべき領域に沿って補助封止領域６が予め形成されているので、当該最終封止領域８が形成されるべき領域の外包材３の部分を当該補助封止領域６によって拘束できる。そのため、最終封止領域８が形成されるべき領域の外包材３においてしわや位置ずれが発生することを抑制できる。この結果、最終封止領域８において封止された外包材３のフィルム５が局所的に折れ曲がった状態となり、封止が不十分となる可能性を低減できる。したがって、封止が不十分となった領域から外包材３の内部に空気が侵入し、断熱部材１の断熱性能が低下したり、断熱部材１が変形したりする不良の発生を抑制できる。すなわち、信頼性の高い断熱部材１を提供できる。 On the other hand, in the heat insulating member 1 according to the present disclosure, 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. Therefore, it is possible to suppress the occurrence of defects such as air intruding into the inside of the outer packaging material 3 from the region where the sealing is insufficient, the heat insulating performance of the heat insulating member 1 is deteriorated, and the heat insulating member 1 is deformed. That is, the highly reliable heat insulating member 1 can be provided.
　上記断熱部材の製造方法において、補助封止領域６は、最終封止領域８の伸びる方向に沿った方向において開口部７を挟むように配置されている。この場合、開口部７に近接した位置に最終封止領域８が形成されることになる。また、外包材３において開口部７と最終封止領域８との間の領域は、当該開口部７を介して外包材３の外部と繋がっているため、芯材２を配置する内部領域として利用し得ない。そのため、上記のように開口部７に近接した位置に最終封止領域８を形成することで、上記のように内部領域として利用できない部分のサイズを小さくできる。この結果、芯材２のサイズに対して外包材３のサイズを過剰に大きくする必要が無く、断熱部材１の製造コストの増大を抑制できる。 In the method of manufacturing the heat insulating member, 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. In this case, the final sealing area 8 is formed at a position close to the opening 7. In addition, 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.
　実施の形態２．
　＜断熱部材の構成＞
　図１０は、実施の形態２に係る断熱部材の平面模式図である。図１０に示す断熱部材１は、基本的には図１～図３に示した断熱部材１と同様の構成を備えるが、補助封止領域６と最終封止領域８のとの相対的な配置が図１～図３に示した断熱部材１と異なっている。図１０に示した断熱部材１では、補助封止領域６が、外包材３において芯材２と封止領域３０の一部である最終封止領域８との間に配置されている。補助封止領域６は、第１封止領域３ａａにおいて芯材２と対向する領域と最終封止領域８と重なる領域との間から、最終封止領域８が伸びる方向に突出するように形成されている。 Embodiment 2.
<Structure of heat insulating member>
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. In the heat insulating member 1 shown in FIG. 10, 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.
　＜断熱部材の製造方法＞
　図１１は、図１０に示した断熱部材の製造方法を説明するための断面模式図である。図１１を用いて図１０に示した断熱部材１の製造方法を説明する。図１０に示した断熱部材１の製造方法は、基本的には図４に示した断熱部材の製造方法と同様である。ただし、図４の外包材の製作工程（Ｓ１０）において準備される外包材３では、図１０に示すように補助封止領域６が外包材３において芯材２が配置される領域と最終封止領域８が形成される領域との間に配置されている。 <Method of manufacturing heat insulating member>
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. However, in the outer packaging material 3 prepared in the outer packaging material manufacturing step (S10) of FIG. 4, as shown in FIG. 10, 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.
　その後、工程（Ｓ２０）～工程（Ｓ５０）までを実施の形態１に係る断熱部材の製造方法と同様に実施する。そして、工程（Ｓ６０）において、外包材３と当該外包材３の内部に収容されている芯材２とからなる対象物に対する溶着シール機２２を図１１に示すように位置決めする。図１１に示すように、溶着シール機２２は、外包材３において補助封止領域６からみて芯材２が配置された側と反対側の領域を挟むように配置される。溶着シール機２２に挟まれる領域、つまり最終封止領域８が形成されるべき外包材３の領域は、図１１に示すようにフィルム５ａおよびフィルム５ｂが平坦な状態で重なっている。 After that, 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. Then, in the step (S60), 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. As shown in FIG. 11, 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. In the area sandwiched by the welding and sealing machine 22, that is, the area of the outer packaging material 3 in which the final sealing area 8 is to be formed, the films 5a and 5b are overlapped in a flat state as shown in FIG.
　その後、図４の工程（Ｓ７０）および工程（Ｓ８０）を実施することにより、図１０に示す断熱部材１を得ることができる。 Thereafter, the heat insulating member 1 shown in FIG. 10 can be obtained by performing the step (S70) and the step (S80) in FIG.
　＜作用効果＞
　上記断熱部材１では、補助封止領域６が形成されているため実施の形態１に係る断熱部材１と同様の効果を得ることができる。 <Effect>
In the heat insulating member 1, since the auxiliary sealing region 6 is formed, the same effect as that of the heat insulating member 1 according to the first embodiment can be obtained.
　上記断熱部材１の製造方法において、補助封止領域６は、外包材３において芯材２と最終封止領域８が形成されるべき領域との間に配置されている。この場合、芯材２を挟むように配置された外包材３のフィルム５ａとフィルム５ｂとを補助封止領域６によって固定できる。そして、補助封止領域６から見て芯材２が位置する側と反対側の領域では、補助封止領域６が形成されることより上記フィルム５ａとフィルム５ｂとが積層された状態となる。このため、最終封止領域８を形成する場合にフィルム５ａとフィルム５ｂとの位置合わせを容易に行うことができる。 In the method for manufacturing the heat insulating member 1, 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. In this case, 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. Then, in the region opposite to the side where the core material 2 is located as viewed from 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.
　以下、より具体的に説明する。たとえば、実施の形態１に係る断熱部材の製造方法において、図７に示すようにフィルム５ａおよびフィルム５ｂは芯材２と補助封止領域６との間で斜めになっている。この斜めになった領域を挟むように溶着シール機２２が配置されている。このため、最終の封止工程（Ｓ８０）を実施する時、つまり溶着シール機２２が閉じる際に、溶着シール機２２が上述のように傾斜しているフィルム５ａおよびフィルム５ｂに接触する。そして、溶着シール機２２はこれらのフィルム５ａおよびフィルム５ｂを互いに面接触するように押圧して変形させる。このとき、フィルム５ａとフィルム５ｂとにひずみが生じて最終封止領域８にしわが発生する可能性が考えられる。 The following is a more specific explanation. For example, in the method for manufacturing the heat insulating member according to the first embodiment, as shown in FIG. 7, 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.
　一方、本実施の形態によれば図１１に示すように、補助封止領域６によってフィルム５ａおよびフィルム５ｂが拘束されることによって、補助封止領域６から見て周縁部側のフィルム５ａ、フィルム５ｂは平面状に密着した状態となっている。このような平面状に積層した状態のフィルム５ａおよびフィルム５ｂの部分に最終封止領域８を形成することができるので、当該最終封止領域８においてしわなどの発生を抑制でき、当該最終封止領域８の信頼性を向上させることができる。 On the other hand, according to the present embodiment, as shown in FIG. 11, 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.
　実施の形態３．
　＜断熱部材の構成＞
　図１２は、実施の形態３に係る断熱部材の平面模式図である。図１２に示した断熱部材１は、基本的には図１～図３に示した断熱部材１と同様の構成を備えるが、補助封止領域６の間に位置する開口部７の構造が図１～図３に示した断熱部材１と異なっている。図１２に示した断熱部材１では、外包材３の外周の一部が切り取られることにより開口部７が形成されている。開口部７は、平面視において外包材３の外周の一部が矩形状に凹んだ領域であって、当該凹んだ領域の内周側において外包材３を構成する２枚のフィルムが固着すること無く開閉可能になっている。 Embodiment 3.
<Structure of heat insulating member>
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. In the heat insulating member 1 shown in FIG. 12, 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.
　＜断熱部材の製造方法＞
　図１３は、図１２に示した断熱部材の製造方法を説明するためのフローチャートである。図１４～図１６は、図１３に示した断熱部材の製造方法を説明するための模式図である。図１７および図１８は、図１３に示した断熱部材の製造方法を説明するための平面模式図である。図１９および図２０は、図１３に示した断熱部材の製造方法を説明するための模式図である。図１３から図２０を参照しながら、図１２に示した断熱部材の製造方法を説明する。 <Method of manufacturing heat insulating member>
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.
　まず、図１３に示すように部材の準備工程（Ｓ１１０）を実施する。この工程（Ｓ１１０）では、図１４に示すように圧縮するプレス機に芯材２を配置するとともに、芯材２を挟むようにフィルム５ａおよびフィルム５ｂを配置する。プレス機は、フィルム５が配置された芯材２を圧縮する部分となるプレス部１１Ａおよびプレス部１１Ｂを含む。具体的には、プレス部１１Ｂ上にフィルム５ｂを配置する。フィルム５ｂ上に芯材２を配置する。芯材２上にフィルム５ａを配置する。プレス部１１Ａはプレス部１１Ｂ上に配置されている。プレス部１１Ａは矢印に示す方向に、プレス部１１Ｂに対して相対的に移動可能である。プレス部１１Ａ、１１Ｂを囲むように溶着シール機１０ａ、１０ｂが配置されている。 First, as shown in FIG. 13, a member preparation step (S110) is performed. In this step (S110), as shown in FIG. 14, 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. Specifically, 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.
　フィルム５ａおよびフィルム５ｂは緩み無く平面状となるよう、図示しない張力維持装置により保持されている。図１４に示すように、芯材２の下面がフィルム５ｂの上面と当接する。芯材２の上面がフィルム５ａの下面と当接する。ように、フィルム５ａ及びフィルム５ｂに挟み込まれた状態でプレス部１１Ｂ上に設置される。なお、このプレス部１１Ｂ上にフィルム５ａおよびフィルム５ｂが設置された状態において、フィルム５ａおよびフィルム５ｂの周縁部は芯材２に当接していない。 The film 5a and the film 5b are held by a tension maintaining device (not shown) so as to be flat without loosening. As shown in FIG. 14, 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. As described above, it is installed on the press unit 11B in a state of being sandwiched between the film 5a and the film 5b. In addition, in the state in which the film 5a and the film 5b are installed on the press portion 11B, the peripheral portions of the film 5a and the film 5b are not in contact with the core material 2.
　次に、圧縮工程（Ｓ１２０）を実施する。この工程（Ｓ１２０）では、プレス機を動作させることにより、プレス部１１Ａをプレス部１１Ｂに向けて相対的に移動させて、図１５に示すようにフィルム５ａおよびフィルム５ｂに挟み込まれた状態の芯材２を圧縮する。このとき、芯材２の厚さが、製造する断熱部材１の厚みの設定値と同等程度の厚さとなるまで、フィルム５ａ、フィルム５ｂおよび芯材２を圧縮する。 Next, a compression process (S120) is performed. In this step (S120), by operating the press machine, 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. At this time, 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.
　次に、１回目封止工程（Ｓ１３０）を実施する。この工程（Ｓ１３０）では、図１５に示すように溶着シール機１０ａ、１０ｂを用い、外包材３となるフィルム５ａおよびフィルム５ｂの周縁部の全周を加熱および加圧する。この結果、フィルム５ａおよびフィルム５ｂは内部に芯材２を保持した状態で、外周が熱溶着される。この結果、フィルム５ａとフィルム５ｂとは外周部が溶着され初期封止領域３ａとなった袋状の外包材３（図１６参照）となる。なお、上記工程（Ｓ１２０）と工程（Ｓ１３０）とは同時に実施されてもよいし、工程（Ｓ１２０）を実施した後工程（Ｓ１３０）を実施してもよい。 Next, the first sealing step (S130) is performed. In 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. As a result, the outer circumferences of the films 5a and 5b are heat-welded while the core material 2 is held therein. As a result, 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).
　次に、圧縮解除工程（Ｓ１４０）を実施する。この工程（Ｓ１４０）では、プレス機による外包材３および芯材２の圧縮を解除する。圧縮解除後においても、芯材２の体積はある程度膨張（復元）するものの、その圧縮状態は維持される。これは以下の理由による。すなわち、外包材３内部の体積が、芯材２の復元力によって増加し、外包材３内部の気圧が低下する。そして、外包材３外部の大気圧と外包材３内部の圧力との差圧が芯材２の復元力と釣り合と、芯材２の復元が停止する。 Next, the decompression process (S140) is performed. In 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.
　次に、対象物を真空容器内に設置する工程（Ｓ１５０）を実施する。この工程（Ｓ１５０）では、芯材２と、内部に当該芯材２が配置された上記外包材３とからなる対象物を、図１６に示すように真空容器２０の内部に配置する。このとき、対象物は真空容器２０内に設置された一対の規制板２１の間に挿入される。規制板２１は対象物を挿入しやすく、かつ、後述する切断工程（Ｓ１６０）での外包材３の切断後の芯材２の厚みの復元を規制できるよう、予め決定された間隔で配置されている。たとえば、一対の規制板２１の間の間隔は、対象物の厚さの１．５倍から数倍程度としてもよい。 Next, the step of installing the target object in the vacuum container (S150) is performed. In this step (S150), 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. At this time, 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. There is. For example, the distance between the pair of regulation plates 21 may be about 1.5 times to several times the thickness of the object.
　次に、切断工程（Ｓ１６０）を実施する。この工程（Ｓ１６０）では、外包材３を、図１７に示す切断位置９において切断して開封する。この結果、図１８に示すように切断された部分に開口部７が形成される。また、初期封止領域３ａにおいて開口部７を挟む位置の部分は補助封止領域６となる。このとき、外包材３の内部に開口部７を通じて空気が流入し、芯材２の厚さが復元するが、規制板２１により芯材２の厚さは規制される。 Next, the cutting process (S160) is performed. In this step (S160), the outer packaging material 3 is cut and opened at the cutting position 9 shown in FIG. As a result, the opening 7 is formed in the cut portion as shown in FIG. In addition, the portion of the initial sealing region 3a at a position sandwiching the opening 7 becomes the auxiliary sealing region 6. At this time, air flows into the outer packaging material 3 through the opening 7 to restore the thickness of the core material 2, but the thickness of the core material 2 is regulated by the regulation plate 21.
　次に、吸着剤の挿入工程（Ｓ１７０）を実施する。この工程（Ｓ１７０）では、図１９に示すように開口部７（図１８参照）を介して外包材３内に吸着剤４を挿入する。 Next, the adsorbent insertion step (S170) is performed. In 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).
　次に、位置決め工程（Ｓ１８０）を実施する。この工程（Ｓ１８０）では、図１９に示すように開口部７（図１８参照）および補助封止領域６が形成された外包材３の周縁部の辺を、溶着シール機２２に対して位置決めする。溶着シール機２２は、補助封止領域６と芯材２との間のフィルム５ａおよびフィルム５ｂの領域に対向する位置に配置される。 Next, the positioning process (S180) is performed. In 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.
　次に、減圧工程（Ｓ１９０）および２回目封止工程（Ｓ２００）を実施する。この工程（Ｓ１９０）および工程（Ｓ２００）は、それぞれ図４に示した減圧工程（Ｓ７０）および封止工程（Ｓ８０）と同様である。すなわち、工程（Ｓ２００）では、補助封止領域６と芯材２との間の領域において溶着シール機２２によりフィルム５ａとフィルム５ｂとが溶着されることにより、最終封止領域８が形成される。なお、２回目封止工程（Ｓ２００）において熱溶着によって形成される最終封止領域８は、図１２に示すように開口部７と芯材２との間の位置に形成される。このようにして、図１２に示す断熱部材１を製造できる。 Next, the depressurization 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.
　＜作用効果＞
　上記断熱部材の製造方法において、準備する工程は、芯材２を挟むように外包材３となるべきフィルム５ａ、５ｂを配置する工程である部材の準備工程（Ｓ１１０）と、当該フィルム５ａ、５ｂにおいて芯材２を囲む領域に初期封止領域３ａを形成する工程である１回目封止工程（Ｓ１３０）と、初期封止領域３ａの一部を含むフィルム５ａ、５ｂの一部を除去することにより、開口部７を形成する工程である切断工程（Ｓ１６０）とを含む。補助封止領域６は、開口部７に隣接する初期封止領域３ａの一部分である。 <Effect>
In the method for manufacturing a heat insulating member, 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. In 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.
　この場合、外包材３の内部には開口部７を形成する前らあらかじめ芯材２が配置されているので、開口部７を介して芯材２を外包材３の内部に入れる場合のように開口部７を芯材２より大きくする必要が無い。このため、開口部７については外包材３の内部を減圧する時に気体の流通が可能な程度の大きさとするなど、断熱部材１の設計の自由度を大きくできる。 In this case, since the core material 2 is arranged in advance inside the outer packaging material 3 before the opening portion 7 is formed, as in the case of inserting the core material 2 into the outer packaging material 3 through the opening portion 7. It is not necessary to make the opening 7 larger than the core material 2. For this reason, 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.
　また、本実施の形態では、芯材２をフィルム５ａとフィルム５ｂとに挟み込まれた状態で圧縮した状態で、溶着シール機１０ａ、１０ｂを用いて外包材３の周縁部の全周（４辺）を加熱及び加圧することによって熱溶着している。よって、真空容器２０内に外包材３および芯材２が配置されて溶着する場合より、芯材２の厚さは薄く、フィルム５ａおよびフィルム５ｂでの緩みがほとんど無い状態で外包材３の周縁部を熱溶着するため、真空容器２０内で熱溶着を実施する場合よりもずれが小さい状態で初期封止領域３ａを形成できる。この初期封止領域３ａが形成された外包材３の外周の一辺の一部を切除して、開口部７を形成する。そして、開口部７と芯材２との間に最終封止領域８を形成している。このため、実施の形態１と同様、最終封止領域８を形成する場合でのフィルム５ａ、５ｂのずれの影響を抑制でき、信頼性の高い最終封止領域８を形成できる。また、本実施の形態では、開口部７のサイズの制約を受けることなく芯材２を外包材３内部に配置できるため、容易に高性能な真空断熱材が得られる。 In addition, in the present embodiment, 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.
　実施の形態４．
　＜断熱部材の構成＞
　図２１は、実施の形態４に係る断熱部材の平面模式図である。図１２に示した断熱部材１は、基本的には図１～図３に示した断熱部材１と同様の構成を備えるが、補助封止領域６および開口部の形状が図１～図３に示した断熱部材１と異なっている。図２１に示した断熱部材１では、開口部としてスリット１９が形成されている。スリット１９は外包材３のフィルムに切り込みを入れることにより形成されている。また、補助封止領域６は、外包材３においてスリット１９が形成された側の一辺に伸びるように形成されている。 Fourth Embodiment
<Structure of heat insulating member>
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. In the heat insulating member 1 shown in FIG. 21, 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.
　異なる観点からいえば、外包材３において、補助封止領域６は封止領域３０より外周側に配置される。外包材３において、封止領域３０より外周側に位置する領域に開口部としてのスリット１９が形成される。補助封止領域６は、封止領域３０と連なり開口部であるスリット１９を囲む外周封止領域４０の一部である。外周封止領域４０は、封止領域３０と連なる２つの第２封止領域３ａｂと、当該２つの第２封止領域３ａｂをつなぐ補助封止領域６とからなる。 From a different point of view, in the outer packaging material 3, the auxiliary sealing region 6 is arranged on the outer peripheral side of the sealing region 30. In the outer packaging material 3, 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.
　＜断熱部材の製造方法＞
　図２２は、図２１に示した断熱部材の製造方法を説明するための平面模式図である。図２１に示した断熱部材の製造方法は、基本的には図１３に示した断熱部材の製造方法と同様であるが、切断工程（Ｓ１６０）の内容が図１３に示した断熱部材の製造方法と異なっている。すなわち、図２１に示した断熱部材の製造方法では、切断工程（Ｓ１６０）として、図２２において点線で示す切断位置９に、外包材３の一部に切り込みを入れることで開口部としてのスリット１９を形成する。なお、その他の工程は図１３に示した断熱部材の製造方法と同様である。 <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.
　＜作用効果＞
　上記断熱部材１では、外包材３において、補助封止領域６は封止領域３０より外周側に配置される。外包材３において、封止領域３０より外周側に位置する領域に開口部としてのスリット１９が形成される。補助封止領域６は、封止領域３０と連なり開口部であるスリット１９を囲む外周封止領域４０の一部である。この場合、図１２に示した実施の形態３に係る断熱部材１と同様の効果を得ることができる。 <Effect>
In the heat insulating member 1, in the outer packaging material 3, the auxiliary sealing region 6 is arranged on the outer peripheral side of the sealing region 30. In the outer packaging material 3, 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.
　上記断熱部材１の製造方法において、準備する工程は、芯材２を挟むように外包材３となるべきフィルム５ａ、５ｂを配置する工程である部材の準備工程（Ｓ１１０）と、フィルム５ａ、５ｂにおいて芯材２を囲む領域に初期封止領域３ａを形成する工程である１回目封止工程（Ｓ１３０）と、初期封止領域３ａと芯材２との間に位置する領域において、フィルムに切り込みであるスリット１９を形成することで開口部を形成する工程（切断工程（Ｓ１６０））とを含む。補助封止領域６は、開口部であるスリット１９から見て芯材２と反対側に位置する初期封止領域３ａの一部である。最終封止領域８を形成する工程である２回目封止工程（Ｓ２００）では、最終封止領域８が開口部であるスリット１９と芯材２との間に位置する領域に形成される。 In the manufacturing method of the heat insulating member 1, 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. In 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. And 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. In 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.
　この場合、開口部であるスリット１９を形成するために、フィルム５ａ、５ｂに切り込みを形成するという簡便な方法を用いることができるので、開口部としてフィルム５ａ、５ｂの一部を除去するような場合と比べて、断熱部材１の製造方法の工程を簡略化し断熱部材１の製造コストを低減できる。また、実施の形態３に係る断熱部材の製造方法と同様に信頼性の高い断熱部材１を得ることができる。 In this case, since a simple method of forming a cut in the films 5a and 5b can be used to form the slits 19 which are openings, a part of the films 5a and 5b is removed as an opening. Compared with the case, it is possible to simplify the steps of the method for manufacturing the heat insulating member 1 and reduce the manufacturing cost of the heat insulating member 1. Further, it is possible to obtain the highly reliable heat insulating member 1 as in the method of manufacturing the heat insulating member according to the third embodiment.
　今回開示された実施の形態はすべての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は上記した説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味、および範囲内でのすべての変更が含まれることが意図される。 The embodiments disclosed this time are to be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.
　１，１０１　断熱部材、２　芯材、３　外包材、３ａ　初期封止領域、３ａａ　第１封止領域、３ａｂ　第２封止領域、４　吸着剤、５，５ａ，５ｂ，１０５ａ　フィルム、６　補助封止領域、７　開口部、８　最終封止領域、９　切断位置、１０ａ，２２　溶着シール機、１１Ａ，１１Ｂ　プレス部、１９　スリット、２０　真空容器、２１　規制板、３０　封止領域、４０　外周封止領域、５０　矢印、１２０　折れ曲がり部。 1, 101 heat insulating member, 2 core material, 3 outer packaging material, 3a initial sealing area, 3aa first sealing area, 3ab second sealing area, 4 adsorbent, 5, 5a, 5b, 105a film, 6 auxiliary sealing Stopping area, 7 opening, 8 final sealing area, 9 cutting position, 10a, 22 welding sealing machine, 11A, 11B pressing section, 19 slit, 20 vacuum container, 21 regulation plate, 30 sealing area, 40 outer peripheral sealing Area, 50 arrows, 120 bends.

Claims (9)

  1. 　開口部が形成された袋状の外包材と、前記外包材の内部に配置された芯材とを含む処理対象物を準備する工程と、
    　前記処理対象物における前記外包材の前記内部を減圧する工程と、
    　前記外包材の前記内部が減圧された状態で、前記外包材において前記開口部に沿って前記外包材の前記内部を前記外包材の外部から区画するように最終封止領域を形成する工程とを備え、
    　前記最終封止領域を形成する工程は、前記外包材において、前記最終封止領域が形成されるべき領域に沿って延在する補助封止領域が予め形成された状態で実施される、断熱部材の製造方法。     A step of preparing a processing object including a bag-shaped outer packaging material in which an opening is formed and a core material arranged inside the outer packaging material,
    Depressurizing the inside of the outer packaging material in the object to be treated,
    A step of forming a final sealing region 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 in a state where the inside of the outer packaging material is decompressed. Prepare,
    The step of forming the final sealing region is performed in the outer packaging material in a state where an auxiliary sealing region extending along the region where the final sealing region is to be formed is previously formed. Manufacturing method.
  2. 　前記補助封止領域は、前記最終封止領域の伸びる方向に沿った方向において前記開口部を挟むように配置されている、請求項１に記載の断熱部材の製造方法。 The method for manufacturing a heat insulating member according to claim 1, wherein the auxiliary sealing region is arranged so as to sandwich the opening in a direction along the extending direction of the final sealing region.
  3. 　前記補助封止領域は、前記外包材において前記芯材と前記最終封止領域が形成されるべき領域との間に配置されている、請求項１または請求項２に記載の断熱部材の製造方法。 The method for manufacturing a heat insulating member according to claim 1, wherein the auxiliary sealing region is arranged between the core material and a region where the final sealing region is to be formed in the outer packaging material. ..
  4. 　前記準備する工程は、
    　前記芯材を挟むように前記外包材となるべきフィルムを配置する工程と、
    　前記フィルムにおいて前記芯材を囲む領域に初期封止領域を形成する工程と、
    　前記初期封止領域の一部を含む前記フィルムの一部を除去することにより、前記開口部を形成する工程とを含み、
    　前記補助封止領域は、前記開口部に隣接する前記初期封止領域の一部分である、請求項１または請求項２に記載の断熱部材の製造方法。     The step of preparing is
    Arranging a film to be the outer packaging material so as to sandwich the core material,
    Forming an initial sealing region in a region surrounding the core material in the film,
    Removing a part of the film including a part of the initial sealing region, thereby forming the opening,
    The method for manufacturing a heat insulating member according to claim 1, wherein the auxiliary sealing region is a part of the initial sealing region adjacent to the opening.
  5. 　前記準備する工程は、
    　前記芯材を挟むように前記外包材となるべきフィルムを配置する工程と、
    　前記フィルムにおいて前記芯材を囲む領域に初期封止領域を形成する工程と、
    　前記初期封止領域と前記芯材との間に位置する領域において、前記フィルムに切り込みを形成することで前記開口部を形成する工程とを含み、
    　前記補助封止領域は、前記開口部から見て前記芯材と反対側に位置する前記初期封止領域の一部であり、
    　前記最終封止領域を形成する工程では、前記最終封止領域が前記開口部と前記芯材との間に位置する領域に形成される、請求項１または請求項２に記載の断熱部材の製造方法。     The step of preparing is
    Arranging a film to be the outer packaging material so as to sandwich the core material,
    Forming an initial sealing region in a region surrounding the core material in the film,
    In a region located between the initial sealing region and the core material, including the step of forming the opening by forming a cut in the film,
    The auxiliary sealing region is a part of the initial sealing region located on the side opposite to the core material when viewed from the opening,
    The manufacturing of a heat insulating member according to claim 1, wherein in the step of forming the final sealing region, the final sealing region is formed in a region located between the opening and the core material. Method.
  6. 　芯材と、
    　前記芯材を内部に保持する袋状の外包材とを備え、
    　前記外包材の前記内部は前記外包材の外部と比べて減圧されており、
    　前記外包材は、前記芯材を囲むように配置された封止領域と、前記封止領域の一部に沿って延在する補助封止領域とを含む、断熱部材。     Core material,
    A bag-shaped outer packaging material that holds the core material inside,
    The inside of the outer packaging material is decompressed compared to the outside of the outer packaging material,
    The said outer packaging material is a heat insulation member containing the sealing area | region arrange | positioned so that the said core material may be enclosed, and the auxiliary | assistant sealing area | region extended along a part of said sealing area | region.
  7. 　前記補助封止領域は、前記外包材において前記芯材と前記封止領域の一部との間に配置されている、請求項６に記載の断熱部材。 The heat insulating member according to claim 6, wherein the auxiliary sealing region is arranged between the core material and a part of the sealing region in the outer packaging material.
  8. 　前記外包材において、前記補助封止領域は前記封止領域より外周側に配置され、
    　前記外包材において、前記封止領域より外周側に位置する領域に開口部が形成され、
    　前記補助封止領域は、前記封止領域の一部の伸びる方向に沿った方向において前記開口部を挟むように配置されている、請求項６または請求項７に記載の断熱部材。     In the outer packaging material, the auxiliary sealing region is arranged on the outer peripheral side of the sealing region,
    In the outer packaging material, an opening is formed in a region located on the outer peripheral side of the sealing region,
    The heat insulating member according to claim 6 or 7, wherein the auxiliary sealing region is arranged so as to sandwich the opening in a direction along a direction in which a part of the sealing region extends.
  9. 　前記外包材において、前記補助封止領域は前記封止領域より外周側に配置され、
    　前記外包材において、前記封止領域より外周側に位置する領域に開口部が形成され、
    　前記補助封止領域は、前記封止領域と連なり前記開口部を囲む外周封止領域の一部である、請求項６または請求項７に記載の断熱部材。     In the outer packaging material, the auxiliary sealing region is arranged on the outer peripheral side of the sealing region,
    In the outer packaging material, an opening is formed in a region located on the outer peripheral side of the sealing region,
    The heat insulating member according to claim 6 or 7, wherein the auxiliary sealing region is a part of an outer peripheral sealing region which is continuous with the sealing region and surrounds the opening.
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