JPH0868592A - Manufacture of vacuum heat-insulating panel - Google Patents
Manufacture of vacuum heat-insulating panelInfo
- Publication number
- JPH0868592A JPH0868592A JP6203550A JP20355094A JPH0868592A JP H0868592 A JPH0868592 A JP H0868592A JP 6203550 A JP6203550 A JP 6203550A JP 20355094 A JP20355094 A JP 20355094A JP H0868592 A JPH0868592 A JP H0868592A
- Authority
- JP
- Japan
- Prior art keywords
- outer bag
- vacuum
- vacuum heat
- heat insulating
- bag
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Thermal Insulation (AREA)
- Refrigerator Housings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷蔵庫等に使用する真
空断熱パネルの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a vacuum heat insulating panel used in a refrigerator or the like.
【０００２】[0002]
【従来の技術】従来より、真空断熱パネルは、例えば、
冷蔵庫や冷凍庫等の断熱箱体に装着されて断熱性能を発
揮するようなされている。2. Description of the Related Art Conventionally, vacuum insulation panels are
It is designed to be installed in a heat insulating box such as a refrigerator or a freezer to exhibit heat insulating performance.
【０００３】図５に示すように、真空断熱パネルは、一
般には、紙または不織布等の通気性を有する袋に、パー
ライト粉末、シリカ微粉末等の断熱性を有する粉末を収
納して所定の形状に予備成形したコア材と、そのコア材
を収納する通気性を有しない合成樹脂製の外包袋とより
なり、図５（ａ）に示すように矩形板状１００に形成さ
れている。そして、その内部が真空状態となっており、
これにより断熱性を発揮する。As shown in FIG. 5, a vacuum heat insulating panel generally has a predetermined shape in which a powder having heat insulating properties such as perlite powder and fine silica powder is stored in a bag having air permeability such as paper or nonwoven fabric. It is composed of a core material preliminarily molded in and a non-breathable synthetic resin outer bag for accommodating the core material, and is formed into a rectangular plate shape 100 as shown in FIG. 5 (a). And the inside is in a vacuum state,
This provides heat insulation.
【０００４】この真空断熱パネルを製造するに際して
は、例えば、ヒートシール層１０２とアルミ蒸着層１０
３と合成樹脂層１０４とよりなる矩形の３層フィルム１
０５を２枚重ねて、その一辺１０８を残して、他の三辺
１０９を熱融着により接合して袋状の外包袋１０５を形
成する。そして、通気性袋１０６に粉末１０７を充填し
たコア材をこの外包袋１０５中に収納し、開口部１０８
よりその内部を真空排気する。その後、その開口部１０
８を熱融着等の手段により接合し、外包袋１０５を密封
して真空断熱パネル１００を製造する。When manufacturing this vacuum insulation panel, for example, the heat seal layer 102 and the aluminum vapor deposition layer 10 are used.
Rectangular three-layer film 1 composed of 3 and synthetic resin layer 104
Two sheets of 05 are stacked and one side 108 thereof is left, and the other three sides 109 are joined by heat fusion to form a bag-like outer bag 105. Then, the core material in which the powder 107 is filled in the breathable bag 106 is housed in the outer bag 105, and the opening 108 is formed.
Evacuate the inside more. After that, the opening 10
The vacuum heat insulating panel 100 is manufactured by bonding 8 by means of heat fusion or the like and sealing the outer bag 105.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな製造方法では、外包袋１０５の真空排気時に、外包
袋１０５内の空気の移動が乱れてしまい、開口部１０８
付近と奥の方とで排気状態が異なり、コア材微粉末１０
７の積層形態に歪みが生じて、パネル表面１００ａに、
図５（ａ）、（ｂ）に示すような不均一な凹凸１１０が
発生する。つまり、排気時にコア材粉末１０７が抵抗と
なって、排気される空気の移動が阻害され、外包袋１０
５の奥の方からの空気の流れが不安定となるため、コア
材粉末１０７が大きく動かされて、パネル表面１００ａ
に凹凸変形１１０が発生する。However, in such a manufacturing method, when the outer bag 105 is evacuated, the movement of the air in the outer bag 105 is disturbed, and the opening 108 is formed.
Exhaust conditions are different in the vicinity and in the back, and core material fine powder 10
7 is distorted in the laminated form, and the panel surface 100a is
Uneven irregularities 110 as shown in FIGS. 5A and 5B are generated. That is, the core material powder 107 becomes a resistance at the time of evacuation, the movement of the exhausted air is hindered, and the outer bag 10
Since the air flow from the inner part of 5 becomes unstable, the core material powder 107 is largely moved, and the panel surface 100a
The uneven deformation 110 is generated.
【０００６】通常、上記の排気は、外包袋１０５を平坦
な台上に載置して行うため、外包袋１０５の下面はこの
台に圧迫されて平らとなるが、上面は凹凸変形１１０が
発生しやすい。[0006] Normally, the above-mentioned exhaust is carried out by placing the outer packaging bag 105 on a flat table, so that the lower surface of the outer packaging bag 105 is pressed by this table to be flat, but uneven deformation 110 occurs on the upper surface. It's easy to do.
【０００７】このようにパネル表面１００ａに不均一な
凹凸１１０が発生すると、図６により説明するような下
記の問題が生じる。When uneven unevenness 110 is generated on the panel surface 100a as described above, the following problems as described with reference to FIG. 6 occur.
【０００８】図６は、冷蔵庫に用いられる断熱箱体１２
０の縦断面略図であり、この断熱箱体１２０の内箱１１
２と外箱１１４との間に、複数の真空断熱パネル１００
が装着される。この図では、１００Ａ〜Ｄの４種類の装
着状態を示している。FIG. 6 shows a heat insulating box 12 used in a refrigerator.
0 is a schematic longitudinal cross-sectional view of the inner box 11 of the heat insulating box 120.
2 and the outer box 114, a plurality of vacuum insulation panels 100.
Is attached. In this figure, four types of mounting states 100A to 100D are shown.
【０００９】上記の真空断熱パネル１００では、凹凸が
発生した表面を断熱箱体１２０の内箱１１２及び外箱１
１４に接した状態で装着することができないため、例え
ば、１００Ａのように、パネル１００の両面と箱体１２
０との間の空間部１２２に発泡ポリウレタン等を充填し
なければならない。In the above vacuum heat insulation panel 100, the surface with the unevenness is covered with the inner box 112 and the outer box 1 of the heat insulation box 120.
Since it cannot be mounted in contact with 14, it is not possible to mount it on both sides of the panel 100 and the box 12 like 100A, for example.
The space 122 between 0 and 0 must be filled with polyurethane foam or the like.
【００１０】あるいは、１００Ｂ、Ｃのように、凹凸が
発生していない面をそれぞれ内箱１１２、外箱１１４に
密着させ、凹凸発生面と箱体１２０との間の空間部１２
２に発泡ポリウレタンを充填しなければならない。Alternatively, as in 100B and 100C, the surfaces having no unevenness are brought into close contact with the inner box 112 and the outer box 114, respectively, and the space 12 between the unevenness generating surface and the box 120 is formed.
2 must be filled with foamed polyurethane.
【００１１】即ち、１００Ｄに示すように箱体１２０の
両内壁に密着させて装着することができないため、発泡
ポリウレタンを充填する必要があり、断熱箱体１２０の
厚みを薄くすることができないという問題がある。ま
た、充填材として余分な発泡ポリウレタンを必要とする
ため、フロン対策の面からも好ましくないという問題が
ある。That is, as shown in 100D, since it cannot be attached to both inner walls of the box 120 so as to be in close contact with each other, it is necessary to fill the foamed polyurethane, and the thickness of the heat insulating box 120 cannot be reduced. There is. In addition, since extra foamed polyurethane is required as a filler, there is a problem in that it is not preferable in terms of CFC measures.
【００１２】そこで、本発明は、上記の点に鑑み、真空
排気時における表面の凹凸発生を低減することができる
真空断熱パネルの製造方法を提供することを目的とす
る。Therefore, in view of the above points, an object of the present invention is to provide a method for manufacturing a vacuum heat insulating panel capable of reducing the occurrence of surface irregularities during vacuum evacuation.
【００１３】[0013]
【課題を解決するための手段】本発明の請求項１の真空
断熱パネルの製造方法は、粉末状の充填材を通気性袋に
充填してなるコア材を、ガスバリア性を有する外包袋に
収納し、その後に前記外包袋の内部を真空状態に排気
し、そして、前記外包袋を密封して真空断熱パネルを製
造する真空断熱パネルの製造方法であって、前記排気時
に、前記外包袋の対向する２カ所の開口部から同時に排
気する方法である。According to a first aspect of the present invention, there is provided a vacuum insulating panel manufacturing method, wherein a core material obtained by filling a breathable bag with a powdery filler is contained in an outer bag having gas barrier properties. Then, the inside of the outer bag is evacuated to a vacuum state, and a method for manufacturing a vacuum heat-insulating panel, in which the outer bag is sealed to produce a vacuum heat-insulating panel, wherein the outer bag is opposed to the outer bag when the gas is exhausted. This is a method of simultaneously exhausting air from two openings.
【００１４】請求項２の真空断熱パネルの製造方法は、
粉末状の充填材を通気性袋に充填してなるコア材を、ガ
スバリア性を有する外包袋に収納し、その後に前記外包
袋の内部を真空状態に排気し、そして、前記外包袋を密
封して真空断熱パネルを製造する真空断熱パネルの製造
方法であって、前記排気時に、前記外包袋の両面から成
形部材により押圧する方法である。A method of manufacturing a vacuum heat insulating panel according to claim 2 is
A core material obtained by filling a breathable bag with a powdery filler is housed in an outer bag having a gas barrier property, then the inside of the outer bag is evacuated to a vacuum state, and the outer bag is sealed. A method of manufacturing a vacuum heat insulating panel, comprising: pressing a molding member from both sides of the outer bag when the gas is exhausted.
【００１５】請求項３の真空断熱パネルの製造方法は、
粉末状の充填材を通気性袋に充填してなるコア材を、ガ
スバリア性を有する外包袋に収納し、その後に前記外包
袋の内部を真空状態に排気し、そして、前記外包袋を密
封して真空断熱パネルを製造する真空断熱パネルの製造
方法であって、前記排気後、大気圧に戻す前に、前記外
包袋の両面から成形部材により押圧して、前記外包袋を
平らにする方法である。A method of manufacturing a vacuum heat insulating panel according to claim 3 is
A core material obtained by filling a breathable bag with a powdery filler is housed in an outer bag having a gas barrier property, then the inside of the outer bag is evacuated to a vacuum state, and the outer bag is sealed. A method for manufacturing a vacuum heat insulating panel for manufacturing a vacuum heat insulating panel according to claim 1, wherein after the evacuation, before returning to atmospheric pressure, the outer bag is pressed by a molding member from both sides to flatten the outer bag. is there.
【００１６】請求項４の真空断熱パネルの製造方法は、
粉末状の充填材を通気性袋に充填してなるコア材を、ガ
スバリア性を有する外包袋に収納し、その後に前記外包
袋の内部を真空状態に排気し、そして、前記外包袋を密
封して真空断熱パネルを製造する真空断熱パネルの製造
方法であって、前記排気は、前記外包袋内部から空気を
ほとんど排気する粗引き段階と、この粗引き段階から前
記真空断熱パネルが断熱効果を有するまで、さらに、前
記外包袋内部から空気を排気する高真空段階とよりな
り、前記粗引き段階における単位時間当りの排気量を、
前記高真空段階における単位時間当りの排気量より少な
くした方法である。A method of manufacturing a vacuum heat insulating panel according to claim 4 is
A core material obtained by filling a breathable bag with a powdery filler is housed in an outer bag having a gas barrier property, then the inside of the outer bag is evacuated to a vacuum state, and the outer bag is sealed. A method for manufacturing a vacuum heat insulating panel, comprising: a step of roughly evacuating air from the inside of the outer bag and a step of rough evacuation of the vacuum heat insulating panel. Up to a high vacuum stage for exhausting air from the inside of the outer bag, and the exhaust amount per unit time in the rough evacuation stage is
This is a method of reducing the exhaust amount per unit time in the high vacuum stage.
【００１７】[0017]
【作用】請求項１の真空断熱パネルの製造方法では、外
包袋の内部を排気する際、その外包袋の対向する２カ所
の開口部から同時に排気するので、コア材を形成する粉
末状の充填材の間を通って吸引される空気の流れがスム
ーズであり、この充填材の移動に伴なうコア材の変形が
小さい。In the method of manufacturing a vacuum insulation panel according to claim 1, when the inside of the outer bag is evacuated, it is simultaneously evacuated from the two openings of the outer bag facing each other. The flow of air sucked between the materials is smooth, and the deformation of the core material due to the movement of the filler is small.
【００１８】請求項２の真空断熱パネルの製造方法で
は、外包袋の内部を排気する際、その外包袋の両面から
成形部材により押圧しているので、外包袋内に収納され
たコア材を形成する粉末状の充填材の動きが規制され
る。In the method of manufacturing the vacuum heat insulating panel according to the second aspect, when the inside of the outer bag is evacuated, the molding material is pressed from both sides of the outer bag, so that the core material housed in the outer bag is formed. The movement of the powdered filling material is restricted.
【００１９】請求項３の真空断熱パネルの製造方法で
は、外包袋の内部を排気した後、大気圧に戻す前に、そ
の外包袋の両面から成形部材により押圧して、外包袋表
面を所望の形状に成形する。In the method for manufacturing a vacuum heat insulating panel according to claim 3, after the inside of the outer bag is evacuated and before returning to atmospheric pressure, the outer surface of the outer bag is pressed by a molding member from both sides of the outer bag to obtain a desired surface. Shape to shape.
【００２０】請求項４の真空断熱パネルの製造方法で
は、外包袋内部を排気する際、粗引き段階における単位
時間当たりの排気量が、高真空段階における単位時間当
たりの排気量よりも少ない、即ち、気流移動の激しい粗
引き段階の排気を遅く、ゆっくりと行うので、コア材の
変形が小さい。In the method of manufacturing a vacuum heat insulating panel according to claim 4, when exhausting the inside of the outer bag, the exhaust amount per unit time in the roughing stage is smaller than the exhaust amount per unit time in the high vacuum stage, that is, The deformation of the core material is small because the exhaust is performed slowly and slowly in the rough evacuation stage where the air flow moves violently.
【００２１】[0021]
【実施例】以下、本発明の第１の実施例につき、図１、
２を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG.
2 will be described.
【００２２】図１（ａ）は、真空断熱パネル１４を排気
している状態における真空引き装置１０の縦断面図であ
り、（ｂ）は、その横断面図である。FIG. 1A is a vertical sectional view of the evacuation device 10 in a state where the vacuum heat insulating panel 14 is exhausted, and FIG. 1B is a transverse sectional view thereof.
【００２３】この真空引き装置１０は、真空断熱パネル
１４が載置される台１６と、台１６上に配され、台１６
とともに真空空間を形成する容器１２と、容器１２内の
適宜の位置に設けられ、真空断熱パネル１４の一辺をヒ
ートシールするヒートシール機１８と、容器１２に取付
けられ、不図示の真空ポンプに連結された排気ホース２
０とよりなる。The vacuuming apparatus 10 is provided with a table 16 on which the vacuum heat insulating panel 14 is placed, and a table 16 provided on the table 16.
And a container 12 that forms a vacuum space, a heat sealer 18 that is provided at an appropriate position in the container 12 and heat seals one side of the vacuum heat insulating panel 14, and is attached to the container 12 and connected to a vacuum pump (not shown). Exhaust hose 2
It consists of 0.
【００２４】台１６の上面は、矩形に形成されており、
平滑な表面を有する。そして、２つのヒートシール機１
８、１８が、台１６の対向する２辺の内側に１つずつ配
されており、各ヒートシール機１８は、台１６上に固定
された受部１８ａと、その上方に配されて上下に可動す
る押え部１８ｂとよりなる。The upper surface of the base 16 is formed in a rectangular shape,
It has a smooth surface. And two heat sealing machines 1
One of the heat sealing machines 18 is disposed inside the two opposite sides of the base 16, and each heat sealing machine 18 is provided with a receiving portion 18a fixed on the base 16 and arranged above and below the receiving portion 18a. It is composed of a movable pressing portion 18b.
【００２５】このヒートシール機１８の受部１８ａと押
え部１８ｂとの間に、ヒートシール性を有する２枚のフ
ィルムを挿入して、加熱した押え部１８ｂを下方に移動
させて、受部１８ａに押圧することにより、２枚のフィ
ルムをヒートシールすることができる。Two films having a heat-sealing property are inserted between the receiving portion 18a and the holding portion 18b of the heat sealing machine 18 and the heated holding portion 18b is moved downward to move the receiving portion 18a. By pressing against, the two films can be heat-sealed.
【００２６】次に、この真空引き装置１０を用いた、真
空断熱パネル１４の製造方法について説明する。なお、
真空断熱パネル１４は、上述した従来の真空断熱パネル
と同様、外包袋２２とコア材２４とよりなり、外包袋２
２はガスバリア性を有する合成樹脂フィルム、コア材２
４はシリカ微粉末等の粉末状の充填材を通気性を有する
袋に充填したものから形成されている。Next, a method of manufacturing the vacuum heat insulating panel 14 using the vacuum evacuation device 10 will be described. In addition,
The vacuum heat insulation panel 14 is composed of the outer bag 22 and the core material 24 as in the conventional vacuum heat insulation panel described above.
2 is a synthetic resin film having a gas barrier property, a core material 2
4 is formed by filling a bag having air permeability with a powdery filler such as silica fine powder.
【００２７】２枚の矩形のガスバリア性フィルムを重ね
合せ、対向する２辺２２ｃ、２２ｄの端部をヒートシー
ルして、他の対向する２辺２２ａ、２２ｂで開口する筒
状の外包袋２２を形成する。この外包袋２２に、板状に
予備成形されたコア材２４を、外包袋２２の開口部２２
ａから挿入する。Two rectangular gas barrier films are superposed on each other, the ends of the two opposite sides 22c and 22d are heat-sealed, and the tubular outer bag 22 having the other two opposite sides 22a and 22b is opened. Form. Into the outer bag 22, a core material 24 preformed in a plate shape is provided in the opening 22 of the outer bag 22.
Insert from a.
【００２８】これを図１（ａ）、（ｂ）に示すように、
真空引き装置１０内に載置する。このとき、外包袋２２
の２つの開口する辺部２２ａ、２２ｂが、それぞれヒー
トシール機１８の受部１８ａと押え部１８ｂとの間に位
置するように、真空断熱パネル１４を真空引き装置１０
の台１６上に載置する。As shown in FIGS. 1 (a) and 1 (b),
It is placed in the vacuum device 10. At this time, the outer bag 22
Of the vacuum heat insulating panel 14 such that the two open side portions 22a and 22b of the vacuum heat insulating machine 18 are located between the receiving portion 18a and the holding portion 18b of the heat sealing machine 18, respectively.
It is placed on the table 16.
【００２９】そして、容器１２を被せた後、不図示の真
空ポンプを駆動させて、排気用ホース２０より容器１２
内の空気を排気して真空引きを行う。このとき、外包袋
２２の対向する２つの開口部２２ａ、２２ａから同時に
排気される。Then, after covering the container 12, a vacuum pump (not shown) is driven so that the container 12 is pulled through the exhaust hose 20.
Evacuate the air inside and evacuate. At this time, the air is simultaneously exhausted from the two facing openings 22a, 22a of the outer bag 22.
【００３０】この真空引きは、粗引き段階と高真空段階
との２段階により構成して、粗引き段階における単位時
間当たりの排気量を、高真空段階における単位時間当た
りの排気量よりも少なくし、また、粗引き段階における
排気時間を高真空段階における排気時間より長くするこ
とが望ましい。This evacuation is composed of two steps, a rough evacuation step and a high evacuation step, so that the exhaust amount per unit time in the rough evacuation step is smaller than the exhaust amount per unit time in the high evacuation step. Also, it is desirable that the evacuation time in the rough evacuation stage be longer than that in the high vacuum stage.
【００３１】ここで、粗引き段階とは、外包袋２２内部
から空気をほとんど排気する段階、即ち、例えば、外包
袋２２の内部圧力が排気開始時の大気圧（７６０Torr）
から１０Torr程度になるまでの段階である。Here, the roughing stage is a stage in which most of the air is exhausted from the inside of the outer bag 22, that is, for example, the internal pressure of the outer bag 22 is the atmospheric pressure (760 Torr) at the start of exhaust.
To about 10 Torr.
【００３２】また、高真空段階とは、粗引き段階から真
空断熱材１４が十分な断熱効果を有するように、さら
に、外包袋２２内部から空気を排気する段階、即ち、例
えば、外包袋２２の内部圧力が１０Torr程度から１Torr
ないしはそれ以下になるまでの段階である。The high vacuum stage is a stage in which air is exhausted from the inside of the outer bag 22 so that the vacuum heat insulating material 14 has a sufficient heat insulating effect from the roughing stage, that is, for example, the outer bag 22. Internal pressure is about 10 Torr to 1 Torr
Or it is a stage until it becomes less than that.
【００３３】このように、粗引きの段階では時間をかけ
て、即ち、排気速度を遅くして、高真空段階では短時間
で、即ち、排気速度を速くして排気する一例を図２に示
す。As described above, FIG. 2 shows an example in which the rough evacuation step takes time, that is, the evacuation rate is slowed, and the high vacuum step takes a short time, that is, the evacuation rate is fast. .
【００３４】図２は、真空断熱パネル１４の寸法（縦×
横×厚み）が、５００mm×５００mm×２０mmの場合の、
真空引き時間（分）に対する容器１２内の真空度（Tor
r）の一例を示す片対数グラフである。FIG. 2 shows the dimensions of the vacuum insulation panel 14 (length x length).
(Width x thickness) is 500 mm x 500 mm x 20 mm,
The degree of vacuum (Tor) in the container 12 with respect to the evacuation time (minutes)
It is a semi-logarithmic graph which shows an example of r).
【００３５】容器１２内の圧力を３分間で大気圧（７６
０Torr）から１０Torrまで排気し、その後排気速度を速
くし、１分間で１０Torrから０．１Torrまで排気してい
る。この寸法の真空断熱パネル１４の場合、３分程度で
排気を完了しようとする時には、粗引き段階を１分以
上、例えば２分かけ、その後排気速度を代えて０．１To
rrまで、素早く真空引きするのが望ましい。The pressure in the container 12 is set to the atmospheric pressure (76
Evacuation is performed from 0 Torr) to 10 Torr, and then the exhaust speed is increased to exhaust from 10 Torr to 0.1 Torr in 1 minute. In the case of the vacuum heat insulating panel 14 of this size, when exhausting is completed in about 3 minutes, the rough evacuation step takes 1 minute or more, for example, 2 minutes, and then the exhaust speed is changed to 0.1 To.
It is desirable to quickly evacuate to rr.
【００３６】０．１Torrまで真空引きした後、２つのヒ
ートシール機１８、１８により、外包袋２２の対向する
２つの開口辺２２ａ、２２ｂをそれぞれ熱融着して、コ
ア材２４を外包袋２２内にて真空状態に密封する。これ
により真空断熱パネル１４が製造される。その後、容器
１２内の圧力を大気圧に戻して、真空引き装置１０から
真空断熱パネル１４を取出す。After evacuation to 0.1 Torr, the two heat-sealing machines 18 and 18 heat-seal the two opposing opening sides 22a and 22b of the outer bag 22, respectively, and the core material 24 is attached to the outer bag 22. The inside is sealed in a vacuum state. As a result, the vacuum heat insulating panel 14 is manufactured. Then, the pressure in the container 12 is returned to atmospheric pressure, and the vacuum heat insulating panel 14 is taken out from the vacuuming device 10.
【００３７】このように、外包袋２２の対向する２カ所
の開口部２２ａ、２２ｂから同時に排気するので、コア
材２４の粉末間を流れる空気の流れがスムーズになり、
コア材２４の変形による真空断熱パネル１４表面の凹凸
の発生を低減することができる。As described above, since the air is exhausted from the two opening portions 22a and 22b of the outer bag 22 which face each other at the same time, the flow of the air flowing between the powders of the core material 24 becomes smooth,
It is possible to reduce the occurrence of irregularities on the surface of the vacuum heat insulating panel 14 due to the deformation of the core material 24.
【００３８】なお、上記の真空引きにおける具体的な排
気時間については、断熱パネル１４の容積などによって
異なるが、上記したように、粗引き段階で時間をかけ
て、高真空段階で素早く排気することにより、排気の気
流移動が激しい粗引き段階をゆっくり排気することがで
きる。そのため、コア材２４の変形による断熱パネル１
４表面の凹凸の発生を低減することができ、また、高真
空段階においては、素早く排気するので、全体的な排気
時間が長くなることはない。The specific evacuation time in the above vacuum evacuation depends on the volume of the heat insulating panel 14 and the like, but as described above, it takes time in the rough evacuation stage and quick evacuation in the high vacuum stage. As a result, it is possible to slowly exhaust the rough evacuation stage in which the air flow of the exhaust gas is intense. Therefore, the heat insulating panel 1 due to the deformation of the core material 24
(4) It is possible to reduce the occurrence of irregularities on the surface, and, in the high vacuum stage, since the gas is quickly evacuated, the total evacuation time does not become long.
【００３９】図３は、第２の実施例の真空排気方法を示
す真空引き装置３０の縦断面図である。FIG. 3 is a vertical sectional view of an evacuation device 30 showing the vacuum evacuation method of the second embodiment.
【００４０】この真空引き装置３０は、真空断熱パネル
１４の両面を押圧する成形部材１６、３２が設けられて
いること以外は、図１の真空引き装置１０と同様の構成
を有する。The evacuation device 30 has the same structure as the evacuation device 10 of FIG. 1 except that the molding members 16 and 32 for pressing both surfaces of the vacuum heat insulating panel 14 are provided.
【００４１】この成形部材１６、３２は、真空断熱パネ
ル１４を載置する平滑な台１６と、容器１２内にて上下
に移動する押え板３２とよりなる。この押え板３２は、
真空断熱パネル１４の少なくともコア材２４が収納され
ている部分の上面を押すことができるようなされてい
る。The forming members 16 and 32 are composed of a smooth base 16 on which the vacuum heat insulating panel 14 is placed and a holding plate 32 which moves up and down in the container 12. This holding plate 32 is
The upper surface of at least the portion of the vacuum heat insulating panel 14 in which the core material 24 is housed can be pushed.
【００４２】この実施例では、台１６上に真空断熱パネ
ル１４を載置してその外包袋２２の下面を平滑に支持し
た状態で、押え板３２を下方に移動させて外包袋２２の
上面を押圧しながら排気する。なお、台１６上に載置さ
れる真空断熱パネル１４は、１辺２２ａのみが開口して
おり、他の３辺２２ｂ、２２ｃ、２２ｄはあらかじめヒ
ートシールされている。即ち、１辺の開口部２２ａのみ
から排気する。In this embodiment, the vacuum insulating panel 14 is placed on the base 16 and the lower surface of the outer bag 22 is supported smoothly, and the pressing plate 32 is moved downward to move the upper surface of the outer bag 22. Exhaust while pressing. The vacuum heat insulating panel 14 placed on the table 16 has only one side 22a open, and the other three sides 22b, 22c, 22d are heat-sealed in advance. That is, the air is exhausted only from the opening 22a on one side.
【００４３】この実施例であれば、排気時のコア材２４
の変形を押え板３２により防止して、断熱パネル１４表
面の不均一な凹凸の発生を低減することができる。In this embodiment, the core material 24 at the time of exhausting
It is possible to prevent the above deformation by the pressing plate 32, and to reduce the occurrence of unevenness on the surface of the heat insulating panel 14.
【００４４】図４は、第３の実施例の真空排気方法を示
す真空引き装置３０の縦断面図である。ただし、真空引
き装置３０は、図３のものと同一である。FIG. 4 is a vertical sectional view of an evacuation device 30 showing the vacuum evacuation method of the third embodiment. However, the evacuation device 30 is the same as that of FIG.
【００４５】この方法では、まず、台１６上に１辺２２
ａのみが開口した真空断熱パネル１４を載置して真空引
きを行う。In this method, first, one side 22 is placed on the stand 16.
The vacuum heat insulating panel 14 having only a opened is placed to perform vacuuming.
【００４６】真空引き後、容器１２内を大気圧に戻す前
に、押え板３２により真空断熱パネル１４の表面を静荷
重にて押圧して、断熱パネル表面の不均一な凹凸を矯正
する。After the evacuation, before the pressure inside the container 12 is returned to the atmospheric pressure, the pressing plate 32 presses the surface of the vacuum heat insulating panel 14 with a static load to correct the uneven unevenness on the surface of the heat insulating panel.
【００４７】そして、その押圧後、ヒートシール機１８
により開口部２２ａをヒートシールする。After the pressing, the heat sealing machine 18
To heat seal the opening 22a.
【００４８】この方法では、真空引き後、大気圧に戻す
前に、押え板３２で押圧して矯正することにより、表面
が平滑な断熱パネル１４を得ることができる。なお、こ
の押え板３２による押圧は、大気圧に戻す前、即ち、真
空雰囲気中で行わなければならない。大気圧に戻した後
では、その圧力によりコア材２４が固まってしまい、形
状修正が不可能となってしまうからである。In this method, after the evacuation, before the pressure is returned to the atmospheric pressure, the pressure plate 32 presses and corrects the heat insulation panel 14, so that the heat insulating panel 14 having a smooth surface can be obtained. The pressing by the pressing plate 32 must be performed before returning to atmospheric pressure, that is, in a vacuum atmosphere. This is because after returning to atmospheric pressure, the pressure causes the core material 24 to solidify, making shape correction impossible.
【００４９】なお、第２、第３の実施例についても、上
述したように、粗引き段階では、時間をかけてゆっくり
と排気し、高真空段階では短時間で排気した方が、断熱
材１４表面の不均一な凹凸の発生をより低減することが
できる。Also in the second and third embodiments, as described above, it is preferable that the roughing stage is slowly exhausted over time and the high vacuum stage is exhausted in a short time. It is possible to further reduce the occurrence of uneven unevenness on the surface.
【００５０】また、第２、第３の実施例については、外
包袋２２が１辺２２ａだけ開口した断熱材１４を真空引
きする場合について述べたが、第１の実施例と同じよう
に、外包袋２２の対向する２辺２２ａ、２２ｂが開口し
たものを真空引きしてもよい。この場合の方が、上述し
たように排気される空気の流れがスムーズになるため、
断熱材１４表面の凹凸変形をより低減することができる
ので望ましい。Further, in the second and third embodiments, the case where the outer bag 22 is evacuated to the heat insulating material 14 whose one side 22a is open has been described, but like the first embodiment, the outer bag is sealed. The bag 22 having two opposite sides 22a and 22b opened may be vacuumed. In this case, the flow of exhausted air becomes smoother as described above,
It is desirable because the uneven deformation of the surface of the heat insulating material 14 can be further reduced.
【００５１】なお、真空断熱パネル１４の押圧方法は、
上記に限定されることはなく、例えば、左右に対峙する
成形部材間にパネル１４を挾持して、パネル１４を立て
た状態で押圧するように構成することもできる。この場
合、特に、第２の実施例において、対向する２辺２２
ａ、２２ｂで開口する外包袋２２を用いる際には、開口
辺２２ａ、２２ｂが横方向に向くように外包袋２２を挿
入し、上下方向ではなく横方向から排気する方が好まし
い。The method of pressing the vacuum insulation panel 14 is as follows.
The configuration is not limited to the above, and for example, the panel 14 may be sandwiched between the molding members facing each other on the left and right, and the panel 14 may be pressed in an upright state. In this case, in particular, in the second embodiment, the two opposite sides 22
When using the outer bag 22 that opens at a and 22b, it is preferable to insert the outer bag 22 so that the opening sides 22a and 22b are oriented in the lateral direction and to exhaust air from the lateral direction instead of the vertical direction.
【００５２】以上の３つの実施例では、いずれも真空断
熱パネル１４のコア材２４が粉末を通気性袋に充填した
ものにより形成されているため、排気時間が大巾に長く
なることがなく、従来と同等程度の排気時間で行うこと
ができる。In all of the above-mentioned three embodiments, since the core material 24 of the vacuum heat insulating panel 14 is formed by filling the air-permeable bag with powder, the exhaust time does not become extremely long, It can be performed in the same exhaust time as the conventional one.
【００５３】また、このようにして製造された真空断熱
パネル１４は、上下面ともに凹凸がほとんどなく平滑で
あるため、図６に示す冷蔵庫の断熱箱体１２０の外箱１
１４と内箱１１２の両壁に密着させた状態（１００Ｄの
状態）で装着することができる。そのため、ポリウレタ
ンフォームと併用させて断熱箱体１２０を形成する必要
がなく、また、断熱箱体１２０の厚みを有効に薄くする
ことができる。Since the vacuum heat insulating panel 14 manufactured as described above is smooth with almost no unevenness on the upper and lower surfaces, the outer box 1 of the heat insulating box 120 of the refrigerator shown in FIG.
14 and the inner box 112 can be mounted in close contact with each other (100D state). Therefore, it is not necessary to use the polyurethane foam together to form the heat insulating box 120, and the thickness of the heat insulating box 120 can be effectively reduced.
【００５４】なお、上記の実施例においてはいずれも矩
形の真空断熱パネル１４を製造する方法について述べて
きたが、本発明は矩形のパネルに限定されることはな
く、板状であれば、例えば、円形や五角形等にも適用す
ることができる。その場合、対向する２カ所の開口部か
ら排気する際には、一方の開口部から最も遠くに位置す
るように他方の開口部を設ければよい。In the above embodiments, the method for manufacturing the rectangular vacuum heat insulating panel 14 has been described, but the present invention is not limited to the rectangular panel, and if it is a plate-like shape, for example, It can also be applied to circles and pentagons. In that case, when exhausting air from two openings facing each other, the other opening may be provided so as to be located farthest from one opening.
【００５５】また、第２、第３の実施例において、成形
部材１６、３２は、必ずしも表面が平滑な部材でなくて
もよく、断熱パネル１４表面を所望の形状に成形するこ
とができるような適宜の形状を有する部材を使用するこ
ともできる。即ち、例えば、冷蔵庫内箱における仕切壁
を避けるために、成形部材に所定の凸部を設けて、パネ
ル１４の一部に溝や凹みを形成させてもよい。In the second and third embodiments, the molding members 16 and 32 do not necessarily have smooth surfaces, and the surface of the heat insulating panel 14 can be molded into a desired shape. It is also possible to use a member having an appropriate shape. That is, for example, in order to avoid a partition wall in the refrigerator inner box, a predetermined convex portion may be provided on the molding member to form a groove or a recess in a part of the panel 14.
【００５６】[0056]
【発明の効果】本発明の請求項１または４の真空断熱パ
ネルの製造方法であると、外包袋の内部を排気する際
に、コア材の変形が小さいので、真空断熱パネルの表面
の凹凸変形を低減することができ、表面が平滑な真空断
熱パネルを製造することができる。According to the method of manufacturing a vacuum heat insulating panel of the first or fourth aspect of the present invention, when the inside of the outer bag is evacuated, the deformation of the core material is small. Can be reduced, and a vacuum insulating panel having a smooth surface can be manufactured.
【００５７】請求項２または３の真空断熱パネルの製造
方法であると、所定形状の成形部材を用いることによ
り、真空断熱パネルの表面を所望の形状に形成すること
ができる。よって、表面が平滑な成形部材を用いれば、
表面が平滑な真空断熱パネルを製造することができる。According to the manufacturing method of the vacuum heat insulating panel of the second or third aspect, the surface of the vacuum heat insulating panel can be formed into a desired shape by using the molding member having a predetermined shape. Therefore, if a molded member with a smooth surface is used,
It is possible to manufacture a vacuum insulating panel having a smooth surface.
【００５８】以上のように、表面が平滑な真空断熱パネ
ルが得られると、それを冷蔵庫等の断熱箱体の外箱と内
箱の両壁に密着させた状態で装着することができる。そ
のため、断熱箱体の厚みを薄くすることができ、また、
発泡ポリウレタンと併用させて断熱箱体を形成する必要
がない。As described above, when the vacuum heat insulating panel having a smooth surface is obtained, it can be mounted in a state in which it is in close contact with both the outer and inner walls of a heat insulating box such as a refrigerator. Therefore, the thickness of the heat insulation box can be reduced, and
It is not necessary to use it in combination with foamed polyurethane to form a heat insulating box.
【図１】本発明の第１の実施例の真空排気時の状態を示
す真空引き装置であって、（ａ）は縦断面図、（ｂ）は
横断面図である。1A and 1B are a vacuum evacuation device showing a state during vacuum evacuation of a first embodiment of the present invention, in which FIG. 1A is a vertical sectional view and FIG.
【図２】真空排気時の真空引き時間と真空度との関係を
示すグラフである。FIG. 2 is a graph showing the relationship between the evacuation time and the degree of vacuum during evacuation.
【図３】本発明の第２の実施例の真空排気時の状態を示
す真空引き装置の縦断面図である。FIG. 3 is a vertical cross-sectional view of an evacuation device showing a state during evacuation of a second embodiment of the present invention.
【図４】本発明の第３の実施例の真空排気時の状態を示
す真空引き装置の縦断面図である。FIG. 4 is a vertical cross-sectional view of an evacuation device showing a state during evacuation of a third embodiment of the present invention.
【図５】従来の製造方法により製造された真空断熱パネ
ルであって、（ａ）は斜視図、（ｂ）は、（ａ）のＡ−
Ａ線縦断面図である。FIG. 5 is a vacuum heat insulation panel manufactured by a conventional manufacturing method, in which (a) is a perspective view and (b) is A- of (a).
It is a vertical sectional view taken along line A.
【図６】真空断熱パネルの装着状態例を示す断熱箱体の
縦断面略図である。FIG. 6 is a schematic vertical cross-sectional view of a heat insulating box showing an example of a mounted state of a vacuum heat insulating panel.
１４……真空断熱パネル １６……台 ２２……外包袋 ２２ａ、２２ａ……外包袋の開口部 ２４……コア材 ３２……押え板 14 ... Vacuum insulation panel 16 ... Stand 22 ... Outer bag 22a, 22a ... Opening of outer bag 24 ... Core material 32 ... Holding plate
Claims (4)
コア材を、ガスバリア性を有する外包袋に収納し、その
後に前記外包袋の内部を真空状態に排気し、そして、前
記外包袋を密封して真空断熱パネルを製造する真空断熱
パネルの製造方法であって、 前記排気時に、前記外包袋の対向する２カ所の開口部か
ら同時に排気することを特徴とする真空断熱パネルの製
造方法。1. A core material obtained by filling a breathable bag with a powdery filler is housed in an outer bag having a gas barrier property, and then the inside of the outer bag is evacuated to a vacuum state, and A method for manufacturing a vacuum heat insulating panel, which comprises sealing an outer bag and manufacturing a vacuum heat insulating panel, wherein at the time of the evacuation, air is simultaneously evacuated from two opposing openings of the outer bag. Production method.
コア材を、ガスバリア性を有する外包袋に収納し、その
後に前記外包袋の内部を真空状態に排気し、そして、前
記外包袋を密封して真空断熱パネルを製造する真空断熱
パネルの製造方法であって、 前記排気時に、前記外包袋の両面から成形部材により押
圧することを特徴とする真空断熱パネルの製造方法。2. A core material obtained by filling a breathable bag with a powdery filler is housed in an outer bag having a gas barrier property, after which the inside of the outer bag is evacuated to a vacuum state, and It is a manufacturing method of a vacuum heat insulation panel which seals an outer bag and manufactures a vacuum heat insulation panel, Comprising: Pressing from both sides of the above-mentioned outer bag with a molding member at the time of evacuation, The manufacturing method of a vacuum heat insulation panel characterized by things.
コア材を、ガスバリア性を有する外包袋に収納し、その
後に前記外包袋の内部を真空状態に排気し、そして、前
記外包袋を密封して真空断熱パネルを製造する真空断熱
パネルの製造方法であって、 前記排気後、大気圧に戻す前に、前記外包袋の両面から
成形部材により押圧して、前記外包袋を平らにすること
を特徴とする真空断熱パネルの製造方法。3. A core material obtained by filling a breathable bag with a powdery filler is housed in an outer bag having a gas barrier property, after which the inside of the outer bag is evacuated to a vacuum state, and A method of manufacturing a vacuum heat insulating panel for sealing a vacuum heat insulating panel to seal a vacuum heat insulating panel, wherein after the evacuation, before returning to atmospheric pressure, the outer bag is pressed by a molding member from both sides of the outer bag, A method for manufacturing a vacuum insulation panel, which comprises flattening.
コア材を、ガスバリア性を有する外包袋に収納し、その
後に前記外包袋の内部を真空状態に排気し、そして、前
記外包袋を密封して真空断熱パネルを製造する真空断熱
パネルの製造方法であって、 前記排気は、 前記外包袋内部から空気をほとんど排気する粗引き段階
と、 この粗引き段階から前記真空断熱パネルが断熱効果を有
するまで、さらに、前記外包袋内部から空気を排気する
高真空段階とよりなり、 前記粗引き段階における単位時間当りの排気量を、前記
高真空段階における単位時間当りの排気量より少なくし
たことを特徴とする真空断熱パネルの製造方法。4. A core material obtained by filling a breathable bag with a powdery filler is housed in an outer bag having a gas barrier property, after which the inside of the outer bag is evacuated to a vacuum state, and A method for manufacturing a vacuum heat insulation panel, which comprises sealing an outer bag and manufacturing a vacuum heat insulation panel, wherein the evacuation includes a rough evacuation step of almost exhausting air from inside the outer bag, and the vacuum heat insulation panel from the rough evacuation step. Until it has an adiabatic effect, further comprising a high vacuum step of exhausting air from the inside of the outer packaging bag, the exhaust amount per unit time in the rough evacuation step, from the exhaust amount per unit time in the high vacuum stage A method for manufacturing a vacuum insulation panel, which is characterized in that the number is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6203550A JPH0868592A (en) | 1994-08-29 | 1994-08-29 | Manufacture of vacuum heat-insulating panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6203550A JPH0868592A (en) | 1994-08-29 | 1994-08-29 | Manufacture of vacuum heat-insulating panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0868592A true JPH0868592A (en) | 1996-03-12 |
Family
ID=16475999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6203550A Pending JPH0868592A (en) | 1994-08-29 | 1994-08-29 | Manufacture of vacuum heat-insulating panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0868592A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11201379A (en) * | 1998-01-13 | 1999-07-30 | Sanyo Electric Co Ltd | Vacuum heat insulating material and manufacture thereof |
| JP2005083463A (en) * | 2003-09-08 | 2005-03-31 | Nisshinbo Ind Inc | Method of manufacturing vacuum heat insulating material |
| JP2013104490A (en) * | 2011-11-14 | 2013-05-30 | Sekisui Plastics Co Ltd | Method for manufacturing vacuum heat insulating material |
| KR101340375B1 (en) * | 2011-11-22 | 2013-12-11 | 동일자동화(주) | Apparatus for processing the vaccum insulation panel |
| JP2016017591A (en) * | 2014-07-09 | 2016-02-01 | 三菱電機株式会社 | Manufacturing method of vacuum heat insulation material and vacuum heat insulation material manufactured by the same |
| JP2021105514A (en) * | 2019-09-04 | 2021-07-26 | 東芝ライフスタイル株式会社 | Heat insulation box |
-
1994
- 1994-08-29 JP JP6203550A patent/JPH0868592A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11201379A (en) * | 1998-01-13 | 1999-07-30 | Sanyo Electric Co Ltd | Vacuum heat insulating material and manufacture thereof |
| JP2005083463A (en) * | 2003-09-08 | 2005-03-31 | Nisshinbo Ind Inc | Method of manufacturing vacuum heat insulating material |
| JP2013104490A (en) * | 2011-11-14 | 2013-05-30 | Sekisui Plastics Co Ltd | Method for manufacturing vacuum heat insulating material |
| KR101340375B1 (en) * | 2011-11-22 | 2013-12-11 | 동일자동화(주) | Apparatus for processing the vaccum insulation panel |
| JP2016017591A (en) * | 2014-07-09 | 2016-02-01 | 三菱電機株式会社 | Manufacturing method of vacuum heat insulation material and vacuum heat insulation material manufactured by the same |
| JP2021105514A (en) * | 2019-09-04 | 2021-07-26 | 東芝ライフスタイル株式会社 | Heat insulation box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6623413B1 (en) | Vacuum insulated panel and container and method of production | |
| US5900299A (en) | Vacuum insulated panel and container and method of production | |
| US8281558B2 (en) | Method for the production of a vacuum insulation element wrapped in a film, filled with powder | |
| JP6965410B2 (en) | Vacuum insulation panel and its manufacturing method | |
| US20040058119A1 (en) | Vacuum insulated panel and container | |
| EP1786677B1 (en) | Vacuum packaging films patterned with protruding cavernous structures | |
| US5664408A (en) | Apparatus for vacuum packaging a soft product | |
| JPH0882474A (en) | Vacuum heat insulating material | |
| JPH0868592A (en) | Manufacture of vacuum heat-insulating panel | |
| JPH0798090A (en) | Vacuum heat insulation panel and manufacture for heat insulation box body in which vacuum heat insulation panel is used | |
| JP2997687B2 (en) | Method of manufacturing film / foil panel and film / foil panel manufactured by the method | |
| JP4390022B2 (en) | Vacuum insulation material and manufacturing method thereof | |
| JP2723684B2 (en) | Vacuum insulation panel | |
| US20050132669A1 (en) | Vacuum packaging method and mechanism | |
| JPH04279421A (en) | Method and device vacuum packing up granular body | |
| JP3707538B2 (en) | Equipment for continuously forming vacuum packaging | |
| JPH09133289A (en) | Manufacture of vacuum heat insulation body | |
| JPH10169889A (en) | Heat insulation material pack | |
| JP3441498B2 (en) | Manufacturing method of vacuum insulation structure | |
| JPH0121434B2 (en) | ||
| JP2665581B2 (en) | Vacuum packaging method | |
| JPS61101789A (en) | Heat-insulating material pack and manufacture thereof | |
| JPH04351397A (en) | Equipment for filling core into vacuum heat insulating material | |
| JPS63163767A (en) | Manufacture of vacuum heat-insulating material | |
| JPH08152259A (en) | Heat insulation box and manufacture thereof |