WO2018056096A1 - Contenant isolant - Google Patents

Contenant isolant Download PDF

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Publication number
WO2018056096A1
WO2018056096A1 PCT/JP2017/032690 JP2017032690W WO2018056096A1 WO 2018056096 A1 WO2018056096 A1 WO 2018056096A1 JP 2017032690 W JP2017032690 W JP 2017032690W WO 2018056096 A1 WO2018056096 A1 WO 2018056096A1
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WO
WIPO (PCT)
Prior art keywords
container
spacer
inner container
calcium silicate
heat insulating
Prior art date
Application number
PCT/JP2017/032690
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English (en)
Japanese (ja)
Inventor
佐藤　義治
秀斗 大澤
Original Assignee
象印マホービン株式会社
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 象印マホービン株式会社 filed Critical 象印マホービン株式会社
Priority to JP2018540971A priority Critical patent/JP6518018B2/ja
Publication of WO2018056096A1 publication Critical patent/WO2018056096A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J41/00—Thermally-insulated vessels, e.g. flasks, jugs, jars
    • A47J41/02—Vacuum-jacket vessels, e.g. vacuum bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose

Definitions

  • the present invention relates to a heat insulating container, and in particular, to a heat insulating container made of glass.
  • This heat insulating container is incorporated in an exterior case, for example, and has a structure in which the opening is closed with a lid member, and is used for products that maintain the temperature of contents such as hot water at a desired temperature for a long time (for example, patents) Reference 1).
  • Patent Document 2 discloses a glass vacuum insulation in which a space between a glass inner container and an outer container is evacuated to form a vacuum heat insulating layer, and a pad (spacer) is disposed between the inner container and the outer container.
  • a container is disclosed.
  • the spacer is preferably made of a material having low thermal conductivity.
  • the spacer needs to be buffered. In other words, the spacer needs to have a buffer property to prevent the container from being damaged by an impact such as a product drop by the user during use.
  • the present inventors have studied the spacer in detail.
  • the spacer should be made of a material that is soft to some extent, such as requiring buffering properties when the heat insulating container is used. Therefore, the calcium silicate-based material that has been known as a building material has a low thermal conductivity, and thus has a possibility of being applied to a heat insulating container.
  • calcium silicate-based materials have been considered unpreferable for application to spacers in insulated containers because they are harder than conventional spacers.
  • This invention is made
  • the present invention is as follows.
  • a glass inner container An outer container made of glass surrounding the outer side with respect to the inner container and connected by an opening;
  • a spacer disposed between the inner container and the outer container so as to contact both containers;
  • a heat-insulating container in which a space defined by the inner container and the outer container is evacuated,
  • the spacer is made of a calcium silicate-based material and the contact surface in contact with the inner container and the outer container is smoothed. It is an insulated container.
  • the spacer has a surface roughness of the contact surface of 20 to 50 ⁇ m in terms of arithmetic average height Sa.
  • the spacer has a load required to compress 0.5 mm at a compression speed of 0.1 mm / min is 1500 N or more.
  • the calcium silicate material is subjected to dehydration molding of a slurry composed of a uniform mixture of the following (A) to (D), and the resulting molding is steamed with pressurized steam of 6 kg / cm 2 or more to obtain a silicic acid raw material. After reacting with the lime raw material, it was obtained by heating to 330 ° C. or higher under atmospheric pressure to remove water released from the molded product.
  • A 100 parts by weight of a mixture of lime raw material and silicic acid raw material having a CaO / SiO 2 molar ratio of 0.6 to 1.2
  • B 50 to 170 parts by weight of zonotlite obtained by hydrothermal synthesis
  • C fiber Wollastonite 15-150 parts by weight
  • D Water 2-8 times the total solids
  • FIG. 3 is an enlarged schematic cross-sectional view of a portion along the line AA shown in FIG. 2. It is a figure which shows the measurement area
  • FIGS. 1 is a vertical cross-sectional view of the main part of the heat insulating container cut perpendicularly (axial direction) at an angle of 120 degrees with respect to the axial center (center axis) CL
  • FIG. 2 is a perspective view of the spacer.
  • FIG. 3 is an enlarged cross-sectional view schematically showing the surface of the spacer.
  • a heat insulating container 1 includes a glass inner container 2, a glass outer container 3 that surrounds the outer side of the inner container 2 and is connected by an opening 1 h, and an inner container 2. And a spacer 10 disposed so as to be in contact with both the containers. A space 4 defined by the inner container 2 and the outer container 3 is evacuated.
  • the heat insulating container 1 is formed so that a space 4 between the two containers can be formed by connecting the inner container 2 and the outer container 3 made of glass. Thereafter, the space 4 between the two containers is exhausted from an exhaust part 3e provided on the bottom side of the outer container 3, and the exhaust part 3e is closed to be evacuated.
  • the spacer 10 is bonded to the outer surface of the bottom portion 1a of the inner container 2 via an adhesive prior to overlapping the two containers 2 and 3 together.
  • Three spacers 10 are arranged so as to surround the axial center CL of the inner container 2 at equal intervals, and form a space 4 between the outer container 3 and the inner container 2. And after arrange
  • the heat insulating container 1 manufactured in this way is generally used in a state of being appropriately incorporated in the outer case 20.
  • the number of the spacers 10 can be appropriately changed according to the size of the heat insulating container, preferably 2 or more, more preferably 3 to 10, and still more preferably 3 to 5. Particularly preferably, the number is 3, and the relative position between the inner container 2 and the outer container 3 is highly stable, while the number of places where heat conduction occurs can be reduced as much as possible.
  • the spacer 10 has a predetermined thickness d2, and is configured as a columnar member having circular contact surfaces 10s on the front and back sides.
  • the contact surface 10 s is disposed so as to contact the inner container 2 and the outer container 3.
  • an adhesive is applied to one or both surfaces of the contact surface 10 s so as to adhere to the inner container 2, and is disposed between the bottom surface 1 b of the outer container 3.
  • the spacer 10 is made of a calcium silicate-based material, and a load necessary for compressing 0.1 mm at a compression speed of 0.1 mm / min is 175 N or less.
  • the load necessary to compress the spacer 10 by 0.1 mm at a compression speed of 0.1 mm / min is preferably 10N or more and 175N or less, more preferably 45N or more and 175N or less, and 45N or more and 120N or less. More preferably.
  • the calcium silicate-based material in the present invention is a material containing calcium silicate, and is a material containing a hydrate of a compound in which calcium oxide (CaO) and silicic acid (SiO 2 ) are combined.
  • Calcium silicate contains, for example, zonotolite, tobermorite, wollastonite, other calcium silicate hydrates and mixtures thereof.
  • the calcium silicate-based material in the present invention is a calcium silicate-based material described in JP-A No. 55-167167, and a slurry comprising a homogeneous mixture of the following (A) to (D) is dehydrated and molded.
  • the obtained molded product was steamed with 6 kg / cm 2 or more of pressurized steam to react the silicic acid raw material and the lime raw material, and then heated to 330 ° C. or higher under atmospheric pressure to remove water released from the molded product. It was obtained by removing.
  • A 100 parts by weight of a mixture of a lime raw material and a silicic acid raw material having a CaO / SiO 2 molar ratio of 0.6 to 1.2
  • B 50 to 170 parts by weight of zonotlite obtained by hydrothermal synthesis
  • C fiber Wollastonite 15-150 parts by weight
  • D Water 2-8 times the total solids
  • Examples of the lime raw material, silicic acid raw material, zonotlite, and fibrous wollastonite include those described in JP-A No. 55-167167, and preferable ones are also the same.
  • the calcium silicate-based material can be obtained according to the method of JP-A-55-167167.
  • the calcium silicate-based material may further contain reinforcing fibers, additives, and the like.
  • the spacer 10 can be formed into a desired shape by cutting or punching a plate-like calcium silicate material.
  • the plate-like calcium silicate material Lumi board, Ecolux, NAlux, Hilac, Mitsubishi Hishitaka, Chiyodacera board, etc. are commercially available as calcium silicate plates.
  • the spacer 10 has a cylindrical shape, and the diameter is preferably 6.6 to 7.0 mm, and preferably 6.7 to 6.9 mm. More preferred.
  • the thickness (height) of the spacer 10 is preferably 3.6 to 4.2 mm, and more preferably 3.7 to 4.0 mm. By doing so, the spacer 10 can tolerate a displacement amount with respect to compression of 0.05 mm or more. Therefore, even when the space between the inner container 2 and the outer container 3 is narrowed by 0.05 mm or more due to heat treatment such as annealing, for example, at the time of manufacturing the heat insulating container, the spacer 10 is not destroyed. The inner container 2 and / or the outer container 3 can be prevented from being damaged.
  • the spacer 10 has a contact surface 10s of at least one of the surfaces in contact with the inner container 2 and the outer container 3 smoothed (even if both contact surfaces are smoothed). Good).
  • the spacer 10 can be smoothed by machining or punching.
  • the calcium silicate plate may be smoothed after being machined or punched.
  • a smooth surface having a desired roughness can be obtained by a polishing process using sandpaper (eg, No. 120, No. 80, preferably No. 30).
  • This smoothing process may be a pressure process using a pressure roller or the like in addition to a polishing process for shaving the surface.
  • the convex portion 11t of the contact surface 10s is scraped or crushed to reduce the level difference of the unevenness. Further, the recesses 11b, the pores, and the grooves 10g of the contact surface 10s are filled with fine powder 10p of shaving powder or crushed powder. Since the calcium silicate-based material is porous, when an adhesive is applied when the spacer 10 is bonded to the inner container 2 or the outer container 3, a part of the adhesive component of the spacer 10 is caused by capillary action. It penetrates inside and affects the adhesive strength.
  • the adhesive When the adhesive is applied to the smoothed contact surface 10s, the penetration of the adhesive component into the inside of the spacer 10 of the adhesive is suppressed as compared with the case where the smoothing is not performed, and the adhesive is bonded to the adhesive surface 10s. Uniformly applied. As a result, the adhesive strength is increased, the strength of supporting the container by the spacer 10 is increased, and a heat insulating container having excellent impact strength is obtained.
  • the surface roughness of the contact surface 10 s is more preferably 20 to 50 ⁇ m in arithmetic mean height Sa, and further preferably 20 to 45 ⁇ m. If the surface roughness of the contact surface 10s is the arithmetic average height Sa within the above range, a sufficient buffering function is exhibited when the spacer adhered to the inner container and the outer container come into contact with each other when the heat insulating container is manufactured. .
  • the arithmetic average height Sa is obtained by extending the arithmetic average roughness Ra, which is a two-dimensional roughness parameter, to three dimensions, and is a three-dimensional roughness parameter (three-dimensional height direction parameter).
  • the arithmetic average height can be calculated by the method described in the ISO standard (ISO 25178) from surface shape data measured by a laser microscope or the like.
  • the surface roughness Ra of at least one of the contact surfaces 10s contacting the inner container 2 or the outer container 3 is preferably 20 to 200 ⁇ m, and more preferably 25 to 50 ⁇ m.
  • the surface roughness Ra is an arithmetic average roughness determined in accordance with JIS B0601: 2013.
  • the maximum height Rz is preferably 70 to 250 ⁇ m, and more preferably 130 to 230 ⁇ m.
  • the maximum peak height Rp is preferably 30 to 200 ⁇ m, more preferably 35 to 150 ⁇ m, and even more preferably 45 to 120 ⁇ m.
  • the maximum valley depth Rv is preferably 30 to 200 ⁇ m, more preferably 35 to 170 ⁇ m, and even more preferably 40 to 150 ⁇ m.
  • the average height Rt is preferably 60 to 300 ⁇ m, preferably 100 to 250 ⁇ m, and more preferably 130 to 230 ⁇ m.
  • the ten-point average roughness RzJIS is preferably 50 to 150 ⁇ m, and more preferably 60 to 120 ⁇ m.
  • the maximum height Sz is preferably 150 to 300 ⁇ m, and more preferably 170 to 300 ⁇ m.
  • the aspect ratio Str of the surface property is preferably 0.1 to 0.35, and more preferably 0.1 to 0.3.
  • the Spc which is the arithmetic mean music at the peak of the mountain, is preferably 4.0 to 7.0 (1 / mm), and more preferably 5.0 to 6.5 (1 / mm).
  • the developed area ratio Sdr of the interface is preferably 0.01 to 0.1, and more preferably 0.02 to 0.05.
  • the maximum height Rz, the maximum mountain height Rp, the maximum valley depth Rv, the average height Rt, and the ten-point average roughness RzJIS are obtained in accordance with JIS B0601: 2013. Further, the maximum height Sz, the aspect ratio Str of the surface property, Spc which is the arithmetic mean music of the peak of the mountain, and the developed area ratio Sdr of the interface can be obtained in accordance with ISO 25178.
  • the spacer 10 preferably has a load required to compress 0.5 mm at a compression speed of 0.1 mm / min, preferably 1500 N or more, and more preferably 1800 N or more and 2200 N or less.
  • a load required to compress 0.5 mm at a compression speed of 0.1 mm / min preferably 1500 N or more, and more preferably 1800 N or more and 2200 N or less.
  • the heat insulating container when the heat insulating container is damaged by an impact such as dropping, it is caused by the support form of the inner container 2. That is, when the heat insulating container 1 is dropped, the mass of the contents W in the container (inside the inner container 2) is supported by the inner container 2, and the inner container 2 is connected to the connecting portion 6 with the outer container 3 and Since it is supported by the spacer 10 on the bottom 1 b opposite to the connection portion 6, the stress accompanying the drop tends to concentrate on the connection portion 6 of the inner container 2 with the outer container 3.
  • the spacer 10 is hard, the contact portion between the spacer 10 and the inner container 2 may be damaged, and a relatively soft material has been considered preferable.
  • the spacer 10 is made of a soft material, the amount of elastic deformation becomes large at the time of dropping, and the stress concentration of the connecting portion 6 cannot be suppressed, and in many cases, the connecting portion 6 seems to be damaged. Since the spacer 10 of the present embodiment has a hardness equal to or higher than a specific numerical value, the stress concentration of the connection portion 6 can be suppressed and a heat insulating container excellent in impact strength can be obtained.
  • the spacer 10 of the present embodiment is made of a calcium silicate-based material, and the contact surface 10 s is smoothed so that the adhesive force between the inner container or the outer container and the spacer 10 is strong.
  • the container supporting strength by the spacer 10 is increased, and a heat insulating container excellent in impact strength can be provided.
  • Examples 1-1 to 1-10 Conform to the surface roughness (JIS B0601: 2013 and ISO 25178) and For the region of the arrows connecting the marks, the surface roughness Ra, the maximum height Rz, the maximum peak height Rp, the maximum valley depth Rv, the average height Rt, the ten-point average roughness RzJIS;
  • the arithmetic average height Sa, the maximum height Sz, the surface texture aspect ratio Str, the arithmetic average music Spc at the top of the mountain, and the developed area ratio Sdr of the interface were determined and listed in Table 1.
  • a non-contact 3D measuring machine manufactured by Keyence Corporation, VR-3000 was used.
  • Calcium silicate material spacers (7) were prepared in the same manner as above except that the calcium silicate plate was processed without polishing, and the surface roughness was determined for 10 of them (samples 2-1 to 2-10). It described in Table 1. In addition, 3D images of each sample and measurement data of contour curves are shown in FIGS.
  • Example 1 A heat insulating container made of glass was manufactured using the spacer (1) of the calcium silicate material.
  • the spacer (1) used in the following examples has a shape shown in FIG. 2 in which a calcium silicate plate prepared according to the method of Japanese Patent Laid-Open No. 55-167167 is punched after polishing with # 24 file. The size was 6.8 mm in diameter and 3.8 mm in thickness.
  • test condition 1 the load necessary to compress 0.1 mm at a compression speed of 0.1 mm / min was about 100 N.
  • Compression speed 0.1 mm / min Compression distance: From test sample contact to 0.2 mm Compression contact position: Test jig starting test from a position where 1N is applied to the test sample: Load cell: 5000N Jig: Diameter 100mm x 25mm
  • the heat insulating container shown in FIG. 1 has a height dimension (H) of 180 mm, a maximum diameter (D1) of 160 mm, an opening inner diameter (D2) of 45 mm, an opening outer diameter (D3) of 65 mm, and a container glass thickness (D4).
  • H height dimension
  • D1 maximum diameter
  • D2 opening inner diameter
  • D3 opening outer diameter
  • D4 container glass thickness
  • ) was 1.5 mm, and 1319 pieces were manufactured. Place three spacers of the spacer (1) in advance on the bottom of the inner container, put the inner container in the outer container, and in this state, narrow down the opening while connecting and heating the opening. Then, the exhaust part was exhausted, and the exhaust part was heated and welded to produce a heat insulating container. An adhesive was used to fix the spacer, and 0.015 g was applied to one side of the spacer. Of the 1319 insulated containers, 3 were broken.
  • a drop test was performed under the following conditions using the five heat-insulated containers manufactured above.
  • the outer case is made of metal, with the opening closed with a lid, with 2.2 liters of water as the contents, and the bottom of the finished product container facing the floor from a height of 0.5 m Then, it was dropped on a Lauan plate having a thickness of 30 mm laid on a concrete floor.
  • 0 were damaged by the drop test.
  • Examples 2 to 4, Comparative Examples 1 to 3 Except that the spacers were changed to those shown in Table 2, the insulated containers of Examples 2 to 4 and Comparative Examples 1 to 3 were produced in the same manner as in Example 1 and subjected to a drop test.
  • the spacer has a specific hardness, there is no particular limitation on the size and shape, the number and positions of the installation, and the like, as long as the heat insulation is not affected.
  • the spacer is a cylinder, but it may not be a cylinder.
  • the shape of the heat insulating container is not limited to the shape shown in FIG.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Packages (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Thermal Insulation (AREA)

Abstract

La présente invention concerne un contenant isolant qui est composé de verre, est moins endommagé pendant la production, et présente une excellente résistance aux chocs. Ce contenant isolant 1 comprend : un contenant interne en verre 2; un contenant externe en verre 3 qui entoure l'extérieur du contenant interne 2, et qui est relié à une ouverture 1h; et des éléments espaceurs 10 qui sont disposés entre le contenant interne 2 et le contenant externe 3. Les éléments espaceurs 10 comprennent un matériau à base de silicate de calcium. Les surfaces de contact 10s des éléments espaceurs 10 qui sont en contact avec le contenant interne 2 et le contenant externe 3 ont été soumises à un traitement de lissage.
PCT/JP2017/032690 2016-09-26 2017-09-11 Contenant isolant WO2018056096A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018540971A JP6518018B2 (ja) 2016-09-26 2017-09-11 断熱容器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-187514 2016-09-26
JP2016187514 2016-09-26

Publications (1)

Publication Number Publication Date
WO2018056096A1 true WO2018056096A1 (fr) 2018-03-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023002976A1 (fr) * 2021-07-21 2023-01-26 京セラ株式会社 Espaceur et verre multicouche
WO2023002975A1 (fr) * 2021-07-21 2023-01-26 京セラ株式会社 Espaceur et verre multicouches

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1961403A (en) * 1931-07-15 1934-06-05 American Thermos Bottle Co Double-walled vacuum bottle
JPS4320426B1 (fr) * 1965-06-02 1968-09-02
JPS55167167A (en) * 1979-05-15 1980-12-26 Nippon Asbestos Co Ltd Manufacture of calcium silicate heat resistant material
JPS56119219A (en) * 1980-02-25 1981-09-18 Zojirushi Vacuum Bottle Co Magic bottle made of stailess steel and method
JP2015136852A (ja) * 2014-01-22 2015-07-30 株式会社コスモテック 保温カバー体および射出成型機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1961403A (en) * 1931-07-15 1934-06-05 American Thermos Bottle Co Double-walled vacuum bottle
JPS4320426B1 (fr) * 1965-06-02 1968-09-02
JPS55167167A (en) * 1979-05-15 1980-12-26 Nippon Asbestos Co Ltd Manufacture of calcium silicate heat resistant material
JPS56119219A (en) * 1980-02-25 1981-09-18 Zojirushi Vacuum Bottle Co Magic bottle made of stailess steel and method
JP2015136852A (ja) * 2014-01-22 2015-07-30 株式会社コスモテック 保温カバー体および射出成型機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023002976A1 (fr) * 2021-07-21 2023-01-26 京セラ株式会社 Espaceur et verre multicouche
WO2023002975A1 (fr) * 2021-07-21 2023-01-26 京セラ株式会社 Espaceur et verre multicouches

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JPWO2018056096A1 (ja) 2019-01-17
JP6518018B2 (ja) 2019-05-22

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