JP2004347292A - Folding type cold insulation container - Google Patents

Folding type cold insulation container Download PDF

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Publication number
JP2004347292A
JP2004347292A JP2003147262A JP2003147262A JP2004347292A JP 2004347292 A JP2004347292 A JP 2004347292A JP 2003147262 A JP2003147262 A JP 2003147262A JP 2003147262 A JP2003147262 A JP 2003147262A JP 2004347292 A JP2004347292 A JP 2004347292A
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JP
Japan
Prior art keywords
cold storage
heat insulator
storage container
main body
foldable
Prior art date
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JP2003147262A
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Japanese (ja)
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JP2004347292A5 (en
Inventor
Shinji Tomie
新嗣 冨江
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2003147262A priority Critical patent/JP2004347292A/en
Publication of JP2004347292A publication Critical patent/JP2004347292A/en
Publication of JP2004347292A5 publication Critical patent/JP2004347292A5/ja
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Abstract

<P>PROBLEM TO BE SOLVED: To allow folding into a compact form when not used, to provide heat insulation performance capable of keeping a prescribed temperature for a long period by a cold storage medium, when used, and to allow constant temperature transportation of high quality. <P>SOLUTION: This container comprises a main body 8 having a heat insulating body 11 on each inner face of a bottomed bag body 10 with one open face, and a lid body 17 having the insulating body 11 on its inner face, and for covering the open face of the main body 8. The main body 8 is constituted to be foldable by layering the insulating bodies 11 arranged respectively on the front and rear faces 13a, the both side faces 13b and a bottom face 9 on the bottom face 9 of the bag body 10, in the container, and the container is folded into a substantial rectangular parallelopiped having 240mm or less of height H of which the occupied area is same to the main body 8, by overlapping the lid body 17 on the folded main body 8 to be locked, when folded. In the each insulating body 11, a periphery of a vacuum insulating material 22 is covered further with a coating material 23 such as a cellular resin having a heat-insulating property. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、保冷を主として定温輸送を行うための容器で、使用しない時には折り畳むことが可能な折り畳み式保冷容器に関するものである。
【0002】
【従来の技術】
近年、中元や歳暮の贈答品を中心として定温管理の必要な物品の輸送が増え、それに伴い、閑散期には折り畳んで収納保管し、繁忙期には保冷をしながら輸送を行うことができる折り畳み式保冷容器が普及している(例えば、特許文献1参照)。
【0003】
以下、図面を参照しながら上記従来の折り畳み式保冷箱について説明する。
【0004】
図8は、従来の折り畳み式保冷箱の斜視図である。図8において、従来の折り畳み式保冷箱は、箱体1は、上面が開口された可撓性防水シート製の外箱2を備え、底シート、前後左右の側壁シート3の内面に重ねて底断熱内壁体4、前後の断熱内壁体5、左右の断熱内壁体6が接離可能に取り付けられている。左右の断熱内壁体6は下端で回動可能に連結され、前後の断熱内壁体5は上端が前後の側壁シート3の上端縁の内面に縫着により連結され回動可能となっている。
【0005】
蓋7は箱体1の上面開口を着脱自在に開閉でき、表地と裏地との間に発泡樹脂製で矩形の断熱板を挟み込んで周囲を縫着した構造を有する。
【0006】
以上のように構成された従来の折り畳み式保冷箱の折り畳み方法は、まず、前後の断熱内壁体5を上端を支点にして上方にはね上げ、底断熱内壁体4の上に左右の断熱内壁体6を下端を支点にして重ねる。前後左右の側壁シート3を適当に折り込みながら前後の断熱内壁体5を重ね、その上に蓋7を重ねるものである。使用時には、左右の断熱内壁体6を立て、左右の断熱内壁体6の間に前後の断熱内壁体5を上端を支点にしながら押し込む。これにより左右の断熱内壁体6は両端部を前後の断熱内壁体5により内側から支持されることになる。
【0007】
【特許文献1】
特開平10−338278号公報
【0008】
【発明が解決しようとする課題】
折り畳み式保冷容器は、発送主と配送拠点、及び配送拠点と受取主とを結ぶ小口輸送が一つの大きな用途であるが、この区間において数℃以下の温度を保持する必要がある時間は6時間以上が望ましく、長く保持できるほど輸送貨物の品質保持において安全といえる。また、長距離が想定される配送拠点間の輸送においては同様の低温を10時間以上保持することが望まれている。
【0009】
上記従来の折り畳み式保冷箱において、断熱板は一般的に発泡ポリスチレンや硬質発泡ウレタンフォーム等の発泡樹脂からなるものであり、初期熱伝導率はおよそ0.02W/mK〜0.035W/mKである。そのため、所定の低温保冷時間を確保するためには、容器内への侵入熱量を減らすために断熱板の厚みを40mm以上確保する必要があった。
【0010】
すなわち、折り畳み式保冷箱を使用しないときの一般的な折り畳み方では箱体の6面あるそれぞれの断熱板を積層するため、断熱板だけで少なくとも240mmとなり、袋体の厚みや重なりを考慮すると250mm以上となり、保管時の占有容積が大きいことや、回送時の運搬用パレット(例えば、回送用ロールパレットの床面の寸法は縦1210mm×横720mmで、高さが上段600mm、下段790mm)のスペースに少ない個数しか積み込めずに隙間が大きく空いて非効率である等の問題があった。
【0011】
また、従来の折り畳み式保冷容器では、所定時間の保冷を行おうとすると蓄冷剤を多数個(例えば6個以上)必要とし、そのため、蓄冷剤の投入直後には所定の保冷温度を下回る0℃以下に下がってしまい、輸送品に凍結が生じてしまう問題や、凍結を避けるためには、容器内の温度がある程度上昇してきたことを確認してから輸送品を容器内に収納するなどの時間と管理が必要であった。更に、実質的な容積も減少し、重量も重くなるものであった。
【0012】
本発明は上記従来の課題を解決するもので、薄い断熱体でも十分な保冷性能を確保し、折り畳んだ時には高さが240mm以下となり、なおかつ占有床面積も運搬用パレットの寸法に効率的に納まるとともに、少ない蓄冷剤で所定温度を所定時間保持することができる折り畳み式保冷容器を提供することを目的とする。
【0013】
なお、本発明において、前面及び後面と両側面との区別は便宜上のためであり、前面及び後面と両側面とが入れ替わっても考え方は同一である。
【0014】
【課題を解決するための手段】
本発明の請求項1に記載の発明は、一面が開放された有底の袋体の内側各面に断熱体を有する箱体と、内側面に断熱体を有し、前記箱体の開放面を被蔽する蓋体とからなり、前記箱体は、前面、後面、両側面、及び底面にそれぞれ配設された断熱体を前記袋体の底面に積層することにより折り畳み可能に構成され、折り畳み時には、前記箱体を折り畳んだ上に蓋体を重ねて係止することにより占有面積が前記箱体と同一の略直方体となり、前記略直方体の高さが240mm以下となるもので、使用しない時にはコンパクトに折り畳み可能で容積が小さく省スペース化が図れ、回送時の輸送効率や保管効率を向上することができるという作用を有する。
【0015】
本発明の請求項2に記載の発明は、一面が開放された有底の袋体の内側各面に断熱体を有する箱体と、内側面に断熱体を有し、前記箱体の開放面を被蔽する蓋体とからなり、前記箱体は、前面、後面、両側面、及び底面にそれぞれ配設された断熱体を前記袋体の底面に積層することにより折り畳み可能に構成され、折り畳み時には、前記箱体を折り畳んだ上に蓋体を重ねて係止することにより占有面積が前記箱体と同一の略直方体となり、少なくとも蓋体又は箱体の内側に蓄冷剤袋を設け、融点が−5℃〜−3℃の蓄冷剤を少なくとも内容積30リットルにつき1個使用して、容器内の平均温度を3℃±3Kで10時間以上保持可能な断熱性能を有するもので、所定の温度を従来以上に長く保持することができ、低温保管が必要な輸送貨物の小口輸送における保冷品質の保持をより長く保証することが可能になるとともに、長距離が想定される配送拠点間の輸送にも使用することが可能になるという作用を有する。
【0016】
請求項3に記載の発明は、請求項1記載の発明において、少なくとも蓋体又は箱体の内側に蓄冷剤袋を設け、融点が−5℃〜−3℃の蓄冷剤を少なくとも内容積30リットルにつき1個使用して、容器内の平均温度を3℃±3Kで6時間以上保持可能な断熱性能を有するものであり、従来以上にコンパクトに折り畳み可能で容積が小さく省スペース化が図れ、回送時の輸送効率や保管効率を向上することができる上に、低温保管が必要な輸送貨物の小口輸送における保冷品質は少ない蓄冷剤で充分に保つことができるという作用を有する。
【0017】
請求項4に記載の発明は、請求項1から3のうちいずれかに記載の発明において、内容積を100リットル以上としたものであり、小口輸送における輸送貨物に対して十分な容量を確保することができるという作用を有する。
【0018】
請求項5に記載の発明は、請求項1から4のうちいずれかに記載の発明において、箱体の底面を一辺が450mm以上680mm以下の矩形としたものであり、一般の輸送用パレットに隙間を少なくして効率的に積載できるという作用を有する。
【0019】
請求項6に記載の発明は、請求項1から5のうちいずれかに記載の発明において、断熱体は真空断熱材の周囲を被覆材で包囲したものであり、真空断熱材により断熱性能が格段に向上して薄い断熱体でも所定の保冷保温性能が得られ、輸送時の保冷時間の伸長が可能になるとともに、被覆材が真空断熱材を保護することにより断熱性能を維持することができるという作用を有する。
【0020】
請求項7に記載の発明は、真空断熱材が、繊維材料を圧縮成形した芯材をガスバリア性が高い外被材で覆って内部を減圧して真空封入したものであり、より断熱性能が優れる真空断熱材を使用することにより、より薄い断熱体でも所定の保冷保温性能が得られ、輸送時の保冷時間の更なる伸長が可能になるという作用を有する。
【0021】
請求項8に記載の発明は、請求項1から6のうちいずれかに記載の発明において、断熱体の厚みは10mm以上35mm以下としたものであり、折り畳んだ時に6面が重なって、袋体の厚みを考慮しても、その高さが240mm以下となり、輸送効率や保管効率を向上することができるという作用を有する。特に、一般的に使用されているロールパレットへの効率的な積載を考慮すると、高さは200mm以下がより望ましい。
【0022】
請求項9に記載の発明は、請求項1から6のうちいずれかに記載の発明において、断熱体の初期熱伝導率を0.015W/mK以下としたものであり、少ない蓄冷剤でも所定温度を所定時間保持することが可能になるという作用を有する。
【0023】
請求項10に記載の発明は、請求項6から9のうちいずれかに記載の発明において、真空断熱材の厚みを2mm以上35mm以下としたものであり、周囲を包囲する被覆材との組合せで薄くても所定の断熱性能が得られるとともに、被覆材により断熱体としての剛性を確保することができるという作用を有する。なお、真空断熱材のみの仕様で必要な強度及び剛性をもたせて被覆材との組合せを省略する場合も含む。
【0024】
請求項11に記載の発明は、請求項6から10のうちいずれかに記載の発明において、真空断熱材の初期熱伝導率を0.01W/mK以下としたものであり、真空断熱材の高断熱性能を生かして被覆材と組合せた断熱体の熱伝導率をより小さくすることにより、断熱体をより薄く構成することができるという作用を有する。
【0025】
請求項12に記載の発明は、請求項1から9のうちいずれかに記載の発明において、断熱体は、断熱体全周を包囲する断熱体保持材に出し入れ可能に収納され、この断熱体保持材と袋体とは耐水性を有する生地により構成されたものであり、生地が吸湿して伸縮するなどの悪影響がなく、断熱体も位置がずれたりすることがない。また、断熱体が損傷したときには容易に交換することが可能であるという作用を有する。
【0026】
請求項13に記載の発明は、耐水性を有する生地がポリエステル生地に防水加工を施したものであり、保冷容器内の気体の漏洩がほとんどないため無駄な熱漏洩も少なく、保冷性能の向上に寄与するという作用を有する。
【0027】
請求項14に記載の発明は、請求項1から11のうちいずれかに記載の発明において、断熱体を構成する材料名と、真空断熱材が内包されていることとを明記したものであり、断熱体の廃棄時における分別や再利用が容易になるという作用を有する。
【0028】
【発明の実施の形態】
以下、本発明による折り畳み式保冷容器の実施の形態について、図面を参照しながら説明する。
【0029】
(実施の形態1)
図1は、本発明の実施の形態1による折り畳み式保冷容器の斜視図である。図2は、本発明の実施の形態1による折り畳み式保冷容器の折り畳んだ状態の斜視図で、図3は、本発明の実施の形態1による折り畳み式保冷容器の折り畳んだ状態の断面図である。図4は、本発明の実施の形態1による折り畳み式保冷容器の断熱体の断面図である。
【0030】
図1から図4において、本体8は上面が開放され底面9を有する袋体10の内側面に断熱体11を配設したもので、断熱体11は断熱体保持材12に出し入れ可能に挿入された状態で、それぞれ対向する前後面13aと両側面13b、及び底面9の計5面に各々圧接されている。袋体10と断熱体保持材12は、ポリエステルタフタの裏面に合成樹脂コートを施した厚み2mmの生地を用いて縫製により成形加工したもので、耐水性と防水性を有し、かつ柔軟性も有する。断熱体保持材12の開口14の封止や、断熱体保持材12の袋体10への係止には圧着ファスナー15,16を用いている。
【0031】
蓋体17は、本体8の開放面を被蔽する大きさを有し、袋体10と同様の材料を用いて断熱体11を包囲するように、かつ出し入れ可能に縫製加工してある。蓋体17の上面には全辺にわたってフラップ18を設け、その内側面に圧着ファスナー(A)19を縫着してあり、袋体10の上方周縁に縫着した圧着ファスナー(B1)20とで本体8に係止できるようになっている。なお、袋体10の下方周縁には、折り畳んだ本体8と蓋体17とを係止できるように圧着ファスナー(B2)21が縫着してある。
【0032】
組み立てた本体8に蓋体17を被せた状態の外形寸法は、幅480mm×奥行き650mm×高さ500mmである。
【0033】
断熱体11は真空断熱材22を被覆材23で被覆して構成したものである。断熱体11の熱伝導率は0.015W/mK以下が望ましく、保冷をより安全に保証するには0.010W/mK以下であればより望ましく、0.006W/mK以下であれば更に望ましい。
【0034】
真空断熱材22は、繊維材料、樹脂発泡材料、及び粒状体から選ばれた少なくとも1種類の材料よりなる芯材24を、ガスバリア性を有する外被材25で覆い、内部を減圧して真空封入して構成したものである。外被材25は、ガスバリア層にアルミニウムなどの金属箔や、金属又は無機酸化物を蒸着したフィルムを用い、その内層には熱溶着層として無延伸ポリプロピレン等のフィルムを、最外層に保護層としてナイロンやポリエチレンテレフタレート等のフィルムを積層したラミネートフィルムである。
【0035】
真空断熱材22の熱伝導率は0.01W/mK以下が望ましく、断熱体11として保冷をより安全に保証したり、又は薄く構成したりすることを考慮すれば、0.006W/mK以下であればより望ましく、0.003W/mK以下であれば更に望ましい。
【0036】
被覆材23としては熱伝導率が小さく、内包した真空断熱材22を保護できるものが望ましく、例えば、発砲ポリスチレンや硬質発泡ウレタンフォーム等の発泡樹脂が好適であるが、特に限定するものではない。他にも、真空断熱材22のみを樹脂等の保護ケースに収納したものや、真空断熱材22の外被材25を金属等で構成して強度と剛性を確保したものでも構わない。
【0037】
本実施の形態1における断熱体11としては、真空断熱材22に繊維材料をバインダーを用いて加熱成形して芯材とし、ラミネートフィルムの外被材25で覆って内部を減圧して真空密封したもので、特に芯材24を、表面より内部でバインダーを少なくして成形することにより断熱性能を向上したものを用いた。その初期熱伝導率は0.0025W/mK以下であり、厚みを12mmとし、被覆材23には発泡ポリスチレンを用いて断熱体11の厚みが25mmとなるように成形した。ここで、断熱体11の平面面積に占める真空断熱材22の割合を80%としたときの断熱体11の初期熱伝導率は0.006W/mKとなった。
【0038】
なお、断熱体11の表面には被覆材の使用材料を表示するとともに、内部に真空断熱材を内包することを示す表示26(本実施の形態の場合、「>真空断熱材入り<」と表示)を明示した。
【0039】
こうして構成した本体8の内容積は、外形寸法から断熱体11の厚みを除いて116リットル(幅430mm×奥行き600mm×高さ450mm、生地の厚みは無視)になり、一般的な小口輸送用の保冷容器としては充分な容積である。
【0040】
蓄冷剤袋27はメッシュ状の袋で、融点が−5℃から−3℃で重量が1kgの蓄冷剤28が1個ずつ収納可能であり、蓋体17の内側に2個、本体8の内側面として断熱体保持材12に各1個、合計6個分縫着してある。なお、本実施の形態1で使用した蓄冷剤28は、旭電化工業(株)製「プラス1000−5」、又は(株)イノアックコーポレーション製「CAH−1001マイナス5℃グレード」である。
【0041】
取っ手29は1本の帯がループ状になるように、底面9及び対向する前後面13aの外側面に縫着してある。
【0042】
以上のように構成された折り畳み式保冷容器について、折り畳み方法について説明する。
【0043】
折り畳むには初めに両側面13bの断熱体11bを引き上げ、次に、前後面13aの断熱体11aを圧着ファスナー16を剥離させながら取り出す。残った底面9の断熱体11の上に、前後面13a及び両側面13bから取り外した4枚の断熱体11を積層する。この上に支えを失った状態の袋体10を取っ手29とともに折り込み、更にその上に蓋体17を被せるように積層する。ここで、フラップ18の圧着ファスナー(A)19を袋体10の下部周囲に設けた圧着ファスナー(B)21に係止することにより、本体8と同じ占有面積で高さが低くなった直方体形状にコンパクトに折り畳むことができる。
【0044】
このとき、1枚の厚みが25mmの断熱体11を6枚重ねることにより高さは150mmとなり、袋体10、蓋体17及び断熱体保持材12を構成する1枚2mmのポリエステル生地が14枚重なることにより28mmが追加されて計178mmの高さとなる。更に袋体10と取っ手29の折り込みや折皺等を考慮しても全体の高さHは190mm以下とすることができる。
【0045】
一方、使用時には折り畳むときの逆の手順で組み立てる。
【0046】
こうして構成された折り畳み式保冷容器を、一般に流通するロールパレット30(床面の寸法は縦1210mm×横720mmで、高さが上段600mm、下段790mm)に積載する場合について説明する。
【0047】
図5は、本発明の実施の形態1による折り畳み式保冷容器をロールパレットに積載した模式図である。図5において、組み立てた状態の折り畳み式保冷容器Aは、下段及び上段に各2列、計4個の積載が可能である。これは従来の同じ寸法の折り畳み式保冷容器でも何ら変わることはない。
【0048】
図6は、本発明の実施の形態1による折り畳み式保冷容器を折り畳んでロールパレットに積載した模式図で、図10は、従来の折り畳み式保冷容器を折り畳んでロールパレットに積載した模式図である。
【0049】
図6及び図10において、折り畳んだときの寸法は、本発明による折り畳んだ状態の折り畳み式保冷容器Bが幅480mm×奥行き650mm×高さ190mmであり、従来の折り畳み式保冷容器Cが幅と奥行きは同じで、生地の厚みを無視しても高さ240mmである。従来の折り畳み式保冷容器Cは下段に2列3段で6個、上段に2列2段で4個、計10個の積載が可能である。それに対して、本発明による折り畳み式保冷容器Bは、下段に2列4段で8個、上段に2列3段で6個、それに加えて横の隙間に立てて置くことが可能で上下段各1個、合計16個積載することが可能である。
【0050】
すなわち、折り畳み式保冷容器を16個運搬することを考えると、配送拠点への回送時は、本発明による折り畳み式保冷容器ならば1台のロールパレットで積載可能であり、従来の折り畳み式保冷容器ならば、2台のロールパレットが必要になる。
【0051】
このように、本発明による折り畳み式保冷容器は折り畳むことにより使用時の40%以下の嵩高さになるので、物品輸送後の回送時等にロールパレットへの積載効率及び運搬効率が非常に良くなるとともに、保管時のスペース効率も大変良くなる。
【0052】
図7は、本発明の実施の形態1による折り畳み式保冷容器の容器内平均温度の経時変化を従来品と比較して示した特性図である。ここで、折り畳み式保冷容器の内容積は116リットルであり、蓄冷剤の使用個数は本発明による折り畳み式保冷容器が4個で、従来の真空断熱材を用いない折り畳み式保冷容器は6個である。
【0053】
図7において、本発明による折り畳み式保冷容器は、蓄冷剤28を4個使用することで保冷温度3℃±3Kは11時間保持できる。すなわち、断熱体11のもつ高い断熱性能により一般的な陸上輸送で必要な保冷時間10時間を確保することができる。しかし、従来の折り畳み式保冷保温容器では、同等の保冷時間を確保するためには6個の蓄冷剤29が必要である。そのため、保冷容器内に蓄冷剤29を投入直後には急激に温度が下がって保冷温度を下回る0℃以下となり、輸送品の凍結が生じる可能性がある。すなわち、本実施の形態1による折り畳み式保冷容器は凍結防止などの煩雑な管理が不要で高品質な定温輸送が実現できる。
【0054】
なお、断熱体11は断熱体保持材12に出し入れ可能に収納されているため、断熱体11が損傷しても容易に交換することができる。また、断熱体保持材12と袋体10は耐水性を有するポリエステル生地を使用しているので、吸湿による寸法変化が無く、内部の断熱体11の位置ずれ等が生じない。
【0055】
更に、この耐水性を有するポリエステル生地の裏面に合成樹脂コートにより防水加工を施したものであり、保冷容器内の気体の漏洩がほとんどないため無駄な熱漏洩が少なく、所定の温度を長時間維持する保冷性能の向上に寄与することができる。
【0056】
繰り返し使用後、袋体10の破損や断熱体11の折損等が生じて廃棄に至る場合、断熱体11には断熱体11を構成する材料名と、真空断熱材22が内包されている旨表示してあるので、分別や再利用が容易になる。
【0057】
更に、本実施の形態1において、蓋体17は周囲全体にフラップ18を設けて圧着ファスナーで取り外し可能としたが、いずれか一辺が縫着されて回動可能となっていても良い。また、断熱体保持材12においても、いずれか一辺が縫着されて回動可能となっているものでも良い。また、圧着ファスナーに替えてチャックでも良く、確実に蓋体17を本体8に係止できれば特に限定するものではない。
【0058】
また、本体8の縦横寸法の組合せ、及び、断熱体11と真空断熱材22の厚みの組合せについても、本発明の目的を達成するものであればどのような組み合わせでも良く、特に限定するものではない。
【0059】
また、真空断熱材が剛性をもてば断熱体としての被覆材を省略できるとともに、断熱体としては、被覆材、又は真空断熱材の外被材が断熱体保持材の耐水性や断熱体保護等の要求仕様を満足できるものであれば断熱体保持材を省略できるものである。
【0060】
また、本発明の折り畳み式保冷容器でいう断熱性能とは、実施の形態1で示した蓄冷剤及びその個数で、所定の温度を所定の時間保持するだけの断熱性能を有することを意味するものにすぎず、請求の範囲で示した蓄冷剤を必要としているものではない。
【0061】
【発明の効果】
以上説明したように請求項1に記載の発明は、一面が開放された有底の袋体の内側各面に断熱体を有する本体と、内側面に断熱体を有し、前記本体の開放面を被蔽する蓋体とからなり、前記本体は、前面、後面、両側面、及び底面にそれぞれ配設された断熱体を前記袋体の底面に積層することにより折り畳み可能に構成され、折り畳み時には、前記本体を折り畳んだ上に蓋体を重ねて係止することにより占有面積が前記本体と同一の略直方体となるもので、前記略直方体の高さを240mm以下としたので、使用しない時にはコンパクトに折り畳み可能で容積が小さく省スペース化が図れ、回送時の輸送効率や保管効率を向上することができる。
【0062】
また、請求項2に記載の発明は、一面が開放された有底の袋体の内側各面に断熱体を有する本体と、内側面に断熱体を有し、前記本体の開放面を被蔽する蓋体とからなり、前記本体は、前面、後面、両側面、及び底面にそれぞれ配設された断熱体を前記袋体の底面に積層することにより折り畳み可能に構成され、折り畳み時には、前記本体を折り畳んだ上に蓋体を重ねて係止することにより占有面積が前記本体と同一の略直方体となり、少なくとも蓋体又は本体の内側に蓄冷剤袋を設け、融点が−5℃〜−3℃の蓄冷剤を少なくとも内容積30リットルにつき1個使用して、容器内の平均温度を3℃±3Kで10時間以上保持可能な断熱性能を有するもので、所定の温度を従来以上に長く保持することができ、低温保管が必要な輸送貨物の小口輸送における保冷品質の保持をより長く保証することが可能になるとともに、長距離が想定される配送拠点間の輸送にも使用することが可能になる。
【0063】
また、請求項3に記載の発明は、請求項1記載の発明において、少なくとも蓋体又は本体の内側に蓄冷剤袋を設け、融点が−5℃〜−3℃の蓄冷剤を少なくとも内容積30リットルにつき1個使用して、容器内の平均温度を3℃±3Kで6時間以上保持可能な断熱性能を有するもので、従来以上にコンパクトに折り畳み可能で容積が小さく省スペース化が図れ、回送時の輸送効率や保管効率を向上することができる上に、低温保管が必要な輸送貨物の小口輸送における保冷品質は少ない蓄冷剤で充分に保つことができる。
【0064】
また、請求項4に記載の発明は、請求項から3のうちいずれかに記載の発明において、内容積を100リットル以上としたものであり、小口輸送における輸送貨物に対して十分な容量を確保することができる。
【0065】
また、請求項5に記載の発明は、請求項1から4のうちいずれかに記載の発明において、本体の底面を一辺が450mm以上680mm以下の矩形としたもので、一般の輸送用パレットに隙間を少なくして効率的に積載できる。
【0066】
また、請求項6に記載の発明は、請求項1から5のうちいずれかに記載の発明において、断熱体は真空断熱材の周囲を被覆材で包囲したもので、真空断熱材により断熱性能が格段に向上して薄い断熱体でも所定の保冷保温性能が得られ、輸送時の保冷時間の伸長が可能になるとともに、被覆材が真空断熱材を保護することにより断熱性能を維持することができる。
【0067】
また、請求項7に記載の発明は、真空断熱材が、繊維材料を圧縮成形した芯材をガスバリア性が高い外被材で覆って内部を減圧して真空封入したもので、より断熱性能が優れる真空断熱材を使用することにより、より薄い断熱体でも所定の保冷保温性能が得られ、輸送時の保冷時間の更なる伸長が可能になる。
【0068】
また、請求項8に記載の発明は、請求項1から6のうちいずれかに記載の発明において、断熱体の厚みを10mm以上35mm以下としたもので、折り畳んだ時に6面が重なっても、その高さが240mm以下となり、輸送効率や保管効率を向上することができる。
【0069】
また、請求項9に記載の発明は、請求項1から6のうちいずれかに記載の発明において、断熱体の初期熱伝導率を0.015W/mK以下としたもので、少ない蓄冷剤でも所定温度を所定時間保持することができる。
【0070】
また、請求項10に記載の発明は、請求項6から9のうちいずれかに記載の発明において、真空断熱材の厚みを2mm以上35mm以下としたもので、周囲を包囲する被覆材との組合せで薄くても所定の断熱性能が得られるとともに、被覆材により断熱体としての剛性を確保することができる。
【0071】
また、請求項11に記載の発明は、請求項6から10のうちいずれかに記載の発明において、真空断熱材の初期熱伝導率を0.01W/mK以下としたものであり、真空断熱材と被覆材とを組合せた断熱体の熱伝導率をより小さくすることにより、断熱体をより薄く構成することができる。
【0072】
また、請求項12に記載の発明は、請求項1から9のうちいずれかに記載の発明において、断熱体が全周を包囲する断熱体保持材に出し入れ可能に収納され、この断熱体保持材と袋体とは耐水性を有する生地により構成されたもので、生地が吸湿して伸縮するなどの悪影響がなく、断熱体も位置がずれたりすることがない。また、断熱体が損傷したときには容易に交換することが可能である。
【0073】
また、請求項13に記載の発明は、耐水性を有する生地がポリエステル生地に防水加工を施したもので、保冷容器内の気体の漏洩がほとんどないため無駄な熱漏洩も少なく、保冷性能の向上に寄与することができる。
【0074】
また、請求項14に記載の発明は、請求項1から11のうちいずれかに記載の発明において、断熱体を構成する材料名と、真空断熱材が内包されていることとを明記したもので、断熱体の廃棄時における分別や再利用が容易になる。
【図面の簡単な説明】
【図1】本発明の実施の形態1による折り畳み式保冷容器の斜視図
【図2】本発明の実施の形態1による折り畳み式保冷容器の折り畳んだ状態の斜視図
【図3】本発明の実施の形態1による折り畳み式保冷容器の折り畳んだ状態の断面図
【図4】本発明の実施の形態1による折り畳み式保冷容器の断熱体の断面図
【図5】本発明の実施の形態1による折り畳み式保冷容器をロールパレットに積載した模式図
【図6】本発明の実施の形態1による折り畳み式保冷容器を折り畳んでロールパレットに積載した模式図
【図7】本発明の実施の形態1による折り畳み式保冷容器の容器内平均温度の経時変化を従来品と比較して示した特性図
【図8】従来の折り畳み式保冷容器の斜視図
【図9】従来の折り畳み式保冷容器を折り畳んでロールパレットに積載した模式図
【符号の説明】
8 本体
9 底面
10 袋体
11,11a,11b 断熱体
12 断熱体保持材
13a 前後面
13b 両側面
17 蓋体
22 真空断熱材
23 被覆材
24 芯材
25 外被材
27 蓄冷剤袋
28 蓄冷剤
H 高さ
A 組み立てた状態の折り畳み式保冷容器
B 折り畳んだ状態の折り畳み式保冷容器
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for carrying out constant-temperature transportation mainly for keeping cold, and relates to a foldable cold keeping container that can be folded when not in use.
[0002]
[Prior art]
In recent years, the transport of goods that require constant temperature management has increased, centering on gifts for mid-year and year-end gifts. With this, it can be folded and stored during off-season periods, and can be transported while keeping cool during busy periods. 2. Description of the Related Art Foldable cool containers have become widespread (for example, see Patent Document 1).
[0003]
Hereinafter, the above-mentioned conventional folding cool box will be described with reference to the drawings.
[0004]
FIG. 8 is a perspective view of a conventional foldable cool box. In FIG. 8, a conventional foldable cold insulation box has a box body 1 provided with an outer box 2 made of a flexible waterproof sheet having an open upper surface. The heat-insulating inner wall 4, the front and rear heat-insulating inner walls 5, and the left and right heat-insulating inner walls 6 are attached so as to be able to approach and separate. The left and right heat-insulating inner walls 6 are rotatably connected at lower ends, and the front and rear heat-insulating inner walls 5 have upper ends connected by sewing to the inner surfaces of the upper edges of the front and rear side wall sheets 3 to be rotatable.
[0005]
The lid 7 can open and close the upper surface opening of the box 1 in a detachable manner, and has a structure in which a rectangular heat insulating plate made of a foamed resin is sandwiched between a surface material and a lining, and the periphery thereof is sewn.
[0006]
In the folding method of the conventional foldable cold insulation box configured as described above, first, the front and rear heat-insulating inner walls 5 are flipped upward with the upper end as a fulcrum, and the left and right heat-insulating inner walls 6 are placed on the bottom heat-insulating inner walls 4. Are stacked with the lower end as a fulcrum. The front and rear heat-insulating inner wall members 5 are stacked while appropriately folding the front, rear, left and right side wall sheets 3, and the lid 7 is stacked thereon. In use, the left and right heat insulating inner walls 6 are erected, and the front and rear heat insulating inner walls 5 are pushed between the left and right heat insulating inner walls 6 while using the upper end as a fulcrum. As a result, the left and right heat insulating inner walls 6 are supported at both ends from the inside by the front and rear heat insulating inner walls 5.
[0007]
[Patent Document 1]
JP-A-10-338278
[0008]
[Problems to be solved by the invention]
One of the major uses of the collapsible insulated container is for small-scale transportation between the sender and the delivery base and between the delivery base and the receiver, but it is necessary to maintain a temperature of several degrees C or less in this section for 6 hours. The above is desirable, and the longer it can be held, the safer it is to maintain the quality of the transported cargo. Further, it is desired that the same low temperature be maintained for 10 hours or more in transportation between distribution bases where long distances are assumed.
[0009]
In the above conventional foldable cool box, the heat insulating plate is generally made of a foamed resin such as expanded polystyrene or rigid urethane foam, and has an initial thermal conductivity of about 0.02 W / mK to 0.035 W / mK. is there. Therefore, in order to secure a predetermined low-temperature cooling time, it is necessary to secure the thickness of the heat insulating plate to 40 mm or more in order to reduce the amount of heat entering the container.
[0010]
In other words, in the general folding method when the foldable insulated box is not used, since the heat insulating plates on the six sides of the box are laminated, the heat insulating plate alone becomes at least 240 mm, and 250 mm in consideration of the thickness and the overlap of the bag. As described above, the space occupied by the storage is large, and the space of the transport pallet at the time of forwarding (for example, the dimension of the floor surface of the transporting roll pallet is 1210 mm long × 720 mm wide, 600 mm high at the top and 790 mm at the bottom) However, there is a problem that only a small number of pieces can be loaded and the gap is largely open, resulting in inefficiency.
[0011]
In addition, in the conventional foldable cold storage container, a large number of cold storage agents (for example, 6 or more) are required to perform cold storage for a predetermined time. Therefore, immediately after the cold storage agent is charged, 0 ° C or less, which is lower than a predetermined cold storage temperature. In order to avoid the problem of freezing of transported goods and to avoid freezing, it is necessary to confirm that the temperature inside the container has risen to some extent before storing the transported goods in the container. Management was required. Further, the substantial volume was reduced and the weight was increased.
[0012]
The present invention solves the above-mentioned conventional problems, and secures sufficient cooling performance even with a thin heat insulator, and when folded, the height is 240 mm or less, and the occupied floor area is efficiently accommodated in the dimensions of the transport pallet. It is another object of the present invention to provide a foldable cold storage container that can maintain a predetermined temperature for a predetermined time with a small amount of regenerator.
[0013]
In the present invention, the distinction between the front surface and the rear surface and the both side surfaces is for convenience, and the concept is the same even if the front surface, the rear surface and the both side surfaces are switched.
[0014]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention provides a box body having a heat insulator on each inner surface of a bottomed bag body having one open side, and a heat insulator on the inner side surface, and the open face of the box body The box body is configured to be foldable by stacking heat insulators respectively provided on the front surface, the rear surface, both side surfaces, and the bottom surface on the bottom surface of the bag body. Occasionally, the box occupied area becomes the same substantially rectangular parallelepiped as that of the box by folding and closing the lid on the box, and the height of the substantially rectangular parallelepiped is 240 mm or less. It has a function of being compactly foldable, having a small volume, saving space, and improving transport efficiency and storage efficiency during forwarding.
[0015]
The invention according to claim 2 of the present invention provides a box body having a heat insulator on each inner surface of a bottomed bag body whose one side is open, and a heat insulator on the inner side surface, and the open face of the box body The box body is configured to be foldable by stacking heat insulators respectively provided on the front surface, the rear surface, both side surfaces, and the bottom surface on the bottom surface of the bag body. Occasionally, the box is folded and the lid is overlapped with the lid and locked to form a substantially rectangular parallelepiped having the same occupation area as the box, and a regenerator bag is provided at least inside the lid or the box, and the melting point is reduced. It has a heat insulating property capable of maintaining an average temperature in a container at 3 ° C. ± 3K for 10 hours or more by using at least one regenerator at −5 ° C. to −3 ° C. per 30 liters of internal volume. Can be held longer than before, and the It becomes possible to ensure a longer retention of cold quality in the mouth transport, has the effect of long-distance is can also be used to transport between the delivery locations envisaged.
[0016]
According to a third aspect of the present invention, in the first aspect of the invention, a regenerator bag is provided at least inside a lid or a box, and a regenerator having a melting point of −5 ° C. to −3 ° C. has an internal volume of at least 30 liters. Each piece has a heat insulating property that can maintain the average temperature in the container at 3 ° C. ± 3K for 6 hours or more. It can be folded more compactly, has a smaller volume, saves space, and is transported. In addition to being able to improve the transportation efficiency and storage efficiency at the time, it has the effect that the cold storage quality in small-quantity transportation of transport cargo requiring low-temperature storage can be sufficiently maintained with a small amount of a regenerator.
[0017]
The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the internal volume is 100 liters or more, and secures a sufficient capacity for the cargo transported in small-lot transportation. It has the effect of being able to.
[0018]
The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the bottom surface of the box is a rectangle having a side of 450 mm or more and 680 mm or less. The effect is that the load can be reduced and loading can be carried out efficiently.
[0019]
According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the heat insulator surrounds a periphery of the vacuum heat insulating material with a covering material, and the heat insulating performance is markedly improved by the vacuum heat insulating material. It is possible to obtain a predetermined cooling and heat-retaining performance even with a thin heat insulator, and it is possible to extend the cooling time during transportation, and it is possible to maintain the heat-insulating performance by protecting the vacuum heat-insulating material with the covering material. Has an action.
[0020]
According to a seventh aspect of the present invention, the vacuum heat insulating material is obtained by covering a core material obtained by compression-molding a fiber material with a jacket material having a high gas barrier property, and depressurizing the inside to vacuum-enclose the core material. The use of the vacuum heat insulating material has the effect of providing a predetermined heat insulation and heat retaining performance even with a thinner heat insulator, and further extending the time of cold insulation during transportation.
[0021]
The invention according to claim 8 is the invention according to any one of claims 1 to 6, wherein the thickness of the heat insulator is 10 mm or more and 35 mm or less. In consideration of the thickness of the sheet, its height is 240 mm or less, which has the effect of improving the transport efficiency and the storage efficiency. In particular, in consideration of efficient loading on a generally used roll pallet, the height is more preferably 200 mm or less.
[0022]
According to a ninth aspect of the present invention, in the invention according to any one of the first to sixth aspects, the initial thermal conductivity of the heat insulator is set to 0.015 W / mK or less. Can be held for a predetermined time.
[0023]
The invention according to claim 10 is the invention according to any one of claims 6 to 9, wherein the thickness of the vacuum heat insulating material is set to 2 mm or more and 35 mm or less, and in combination with a covering material surrounding the periphery. A predetermined heat insulating performance can be obtained even if the thickness is small, and the effect of securing rigidity as a heat insulator by the covering material can be obtained. In addition, the case where the combination with the covering material is omitted by providing the necessary strength and rigidity in the specification of only the vacuum heat insulating material is included.
[0024]
An invention according to claim 11 is the invention according to any one of claims 6 to 10, wherein the initial thermal conductivity of the vacuum heat insulating material is set to 0.01 W / mK or less. By making the thermal conductivity of the heat insulator combined with the covering material smaller by making use of the heat insulation performance, the heat insulator can be made thinner.
[0025]
According to a twelfth aspect of the present invention, in the invention according to any one of the first to ninth aspects, the heat insulator is housed so as to be able to be taken in and out of a heat insulator holding material surrounding the entire periphery of the heat insulator. The material and the bag are made of a water-resistant fabric, and there is no adverse effect such as expansion and contraction of the fabric due to moisture absorption, and the position of the heat insulator does not shift. Further, when the heat insulator is damaged, the heat insulator can be easily replaced.
[0026]
According to the invention of claim 13, the water-resistant fabric is obtained by subjecting a polyester fabric to waterproof processing, and there is almost no leakage of gas in the cold storage container, so that there is little unnecessary heat leakage, and the cooling performance is improved. It has the effect of contributing.
[0027]
The invention according to claim 14 is the invention according to any one of claims 1 to 11, wherein the material name of the heat insulator and the fact that the vacuum heat insulator is included therein are specified. It has an effect that separation and reuse at the time of disposal of the heat insulator are facilitated.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a foldable cold storage container according to the present invention will be described with reference to the drawings.
[0029]
(Embodiment 1)
FIG. 1 is a perspective view of a foldable cold storage container according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the folded cold storage container according to the first embodiment of the present invention in a folded state, and FIG. 3 is a sectional view of the folded cold storage container according to the first embodiment of the present invention in a folded state. . FIG. 4 is a cross-sectional view of the heat insulator of the folding cold storage container according to Embodiment 1 of the present invention.
[0030]
1 to 4, a main body 8 has a heat insulator 11 disposed on an inner side surface of a bag body 10 having an open upper surface and a bottom surface 9. The heat insulator 11 is inserted into a heat insulator holding member 12 so as to be able to be taken in and out. In this state, they are pressed against the front and rear surfaces 13a and both side surfaces 13b and the bottom surface 9 which face each other, for a total of five surfaces. The bag body 10 and the heat insulator holding material 12 are formed by sewing using a 2 mm thick cloth in which a synthetic resin coat is applied to the back surface of polyester taffeta, and have water resistance and waterproofness, and also have flexibility. Have. Crimping fasteners 15 and 16 are used for sealing the opening 14 of the heat insulator holding material 12 and locking the heat insulator holding material 12 to the bag 10.
[0031]
The lid 17 has a size to cover the open surface of the main body 8, and is sewn using the same material as the bag 10 so as to surround the heat insulator 11 and to be able to be taken in and out. A flap 18 is provided on the upper surface of the lid 17 over all sides, and a crimp fastener (A) 19 is sewn on the inner surface of the flap 18. The crimp fastener (B1) 20 is sewn on the upper peripheral edge of the bag body 10. The main body 8 can be locked. A crimp fastener (B2) 21 is sewn to the lower peripheral edge of the bag body 10 so that the folded main body 8 and the lid body 17 can be locked.
[0032]
The external dimensions of the assembled main body 8 with the lid 17 covered are 480 mm in width × 650 mm in depth × 500 mm in height.
[0033]
The heat insulator 11 is configured by covering a vacuum heat insulating material 22 with a coating material 23. The thermal conductivity of the heat insulator 11 is desirably 0.015 W / mK or less, more desirably 0.010 W / mK or less, and still more desirably 0.006 W / mK or less in order to assure cold insulation more safely.
[0034]
The vacuum heat insulating material 22 covers a core material 24 made of at least one material selected from a fiber material, a resin foam material, and a granular material with a jacket material 25 having a gas barrier property, and vacuum-encloses the inside by depressurizing the inside. It is configured as follows. The outer cover material 25 uses a metal foil such as aluminum or a film on which a metal or an inorganic oxide is vapor-deposited as a gas barrier layer, a film such as unstretched polypropylene as a heat welding layer as an inner layer, and a protective layer as an outermost layer. It is a laminated film obtained by laminating films such as nylon and polyethylene terephthalate.
[0035]
The thermal conductivity of the vacuum heat insulating material 22 is desirably 0.01 W / mK or less. Considering that the heat insulator 11 is more safely assured to keep cold or is made thinner, it is 0.006 W / mK or less. More preferably, it is 0.003 W / mK or less.
[0036]
As the coating material 23, a material having a low thermal conductivity and capable of protecting the enclosed vacuum heat insulating material 22 is desirable. For example, a foamed resin such as foamed polystyrene or rigid urethane foam is suitable, but not particularly limited. In addition, a material in which only the vacuum heat insulating material 22 is housed in a protective case made of resin or the like, or a material in which the outer cover material 25 of the vacuum heat insulating material 22 is made of metal or the like to ensure strength and rigidity may be used.
[0037]
As the heat insulator 11 in the first embodiment, a core material is formed by heating a fiber material to a vacuum heat insulator 22 using a binder, and the core material is covered with a covering material 25 of a laminate film, and the inside is depressurized and vacuum sealed. In particular, a core material 24 having improved heat insulating performance by forming the core material with a smaller amount of binder inside than on the surface was used. The initial thermal conductivity was 0.0025 W / mK or less, the thickness was 12 mm, and the covering material 23 was molded using expanded polystyrene so that the thickness of the heat insulator 11 was 25 mm. Here, the initial thermal conductivity of the heat insulator 11 when the ratio of the vacuum heat insulator 22 to the plane area of the heat insulator 11 was 80% was 0.006 W / mK.
[0038]
In addition, the surface of the heat insulator 11 displays the used material of the covering material, and a display 26 indicating that a vacuum heat insulating material is included therein (in the case of the present embodiment, “> contains vacuum heat insulating material <”). ).
[0039]
The internal volume of the main body 8 thus configured is 116 liters (430 mm wide x 600 mm deep x 450 mm high, ignoring the thickness of the cloth, excluding the thickness of the heat insulator 11 from the external dimensions), and is generally used for small-lot transportation. It has a sufficient volume for a cool container.
[0040]
The cool storage agent bag 27 is a mesh-shaped bag and can store one cool storage agent 28 having a melting point of -5 ° C. to -3 ° C. and a weight of 1 kg, two inside the lid 17 and the inside of the main body 8. One side is sewn to the heat insulator holding material 12 for a total of six sides. The cold storage agent 28 used in the first embodiment is “Plus 1000-5” manufactured by Asahi Denka Kogyo KK or “CAH-1001 minus 5 ° C. grade” manufactured by Inoac Corporation.
[0041]
The handle 29 is sewn to the outer surface of the bottom surface 9 and the opposed front and rear surfaces 13a so that one band becomes a loop shape.
[0042]
A folding method of the foldable cold storage container configured as described above will be described.
[0043]
To fold, first, the heat insulator 11b on both side surfaces 13b is pulled up, and then the heat insulator 11a on the front and rear surfaces 13a is taken out while the crimp fastener 16 is peeled off. The four heat insulators 11 removed from the front and rear surfaces 13a and both side surfaces 13b are stacked on the heat insulator 11 on the remaining bottom surface 9. The bag body 10 with no support is folded on it together with the handle 29, and the bag body 17 is further laminated thereon so as to cover the lid body 17. Here, by fastening the crimping fastener (A) 19 of the flap 18 to the crimping fastener (B) 21 provided around the lower part of the bag body 10, a rectangular parallelepiped shape having the same area occupied by the main body 8 and having a reduced height is obtained. It can be folded compactly.
[0044]
At this time, the height becomes 150 mm by stacking six heat insulators 11 each having a thickness of 25 mm, and 14 pieces of 2 mm polyester fabric constituting the bag body 10, the lid body 17, and the heat insulator holding material 12. The overlap adds an additional 28 mm, for a total height of 178 mm. Furthermore, the total height H can be set to 190 mm or less even when the folding and wrinkling of the bag body 10 and the handle 29 are considered.
[0045]
On the other hand, at the time of use, assembly is performed in the reverse procedure of folding.
[0046]
A case in which the foldable cold storage container thus configured is loaded on a roll pallet 30 (a floor having dimensions of 1210 mm in length × 720 mm in width, an upper level of 600 mm, and a lower level of 790 mm) which is generally distributed will be described.
[0047]
FIG. 5 is a schematic diagram in which a foldable cold storage container according to Embodiment 1 of the present invention is stacked on a roll pallet. In FIG. 5, the folded refrigerated container A in the assembled state is capable of loading a total of four, two rows in each of the lower and upper tiers. This does not change at all in the conventional foldable cold storage container of the same size.
[0048]
FIG. 6 is a schematic diagram showing a folding cold storage container according to the first embodiment of the present invention folded and loaded on a roll pallet, and FIG. 10 is a schematic diagram showing a conventional folding cold storage container folded and loaded on a roll pallet. .
[0049]
6 and 10, when folded, the folding cold storage container B in the folded state according to the present invention has a width of 480 mm × depth 650 mm × height 190 mm, and the conventional folding cold storage container C has a width and depth. Is the same, and the height is 240 mm even if the thickness of the fabric is ignored. The conventional foldable cold storage container C can load a total of 10 refrigeration containers C in the lower row, 6 in 2 rows and 3 tiers, and 4 in the upper row, 4 in 2 rows and 2 tiers. On the other hand, the foldable cold storage container B according to the present invention can be placed in the lower row in eight rows in two rows and four rows, in the upper row in six rows in two rows and three rows, and in addition, it can be placed upright in the horizontal gap. Each one, a total of 16 pieces can be loaded.
[0050]
That is, considering the transport of 16 foldable insulated containers, the foldable insulated containers according to the present invention can be loaded on a single roll pallet at the time of forwarding to the distribution base, and the conventional foldable insulated containers can be used. Then, two roll pallets are required.
[0051]
As described above, the folding cold storage container according to the present invention has a bulkiness of 40% or less when used by being folded, so that the efficiency of loading onto the roll pallet and the efficiency of transporting the product after transporting the goods are extremely improved. At the same time, space efficiency at the time of storage becomes very good.
[0052]
FIG. 7 is a characteristic diagram showing a change over time in an average temperature in the container of the folding cold storage container according to the first embodiment of the present invention, as compared with a conventional product. Here, the internal volume of the foldable cold storage container is 116 liters, the number of cold storage agents used is four for the foldable cold storage container according to the present invention, and six for the conventional foldable cold storage container not using vacuum insulation. is there.
[0053]
In FIG. 7, the foldable cold storage container according to the present invention can maintain a cold storage temperature of 3 ° C. ± 3 K for 11 hours by using four cold storage agents 28. That is, the high heat insulation performance of the heat insulator 11 can secure a cold keeping time of 10 hours required for general land transportation. However, in the conventional foldable cold storage container, six cold storage agents 29 are required to secure the same cooling time. Therefore, immediately after the refrigerating agent 29 is charged into the cold storage container, the temperature rapidly drops to 0 ° C. or less, which is lower than the cold storage temperature, and there is a possibility that the transported product may freeze. That is, the foldable cold storage container according to the first embodiment does not require complicated management such as prevention of freezing, and can realize high-quality constant-temperature transport.
[0054]
Since the heat insulator 11 is housed in the heat insulator holding member 12 so as to be taken in and out, even if the heat insulator 11 is damaged, it can be easily replaced. Further, since the heat insulator holding material 12 and the bag body 10 are made of water-resistant polyester fabric, there is no dimensional change due to moisture absorption, and no displacement of the internal heat insulator 11 occurs.
[0055]
Furthermore, the back surface of this water-resistant polyester fabric is waterproofed with a synthetic resin coat.There is almost no leakage of gas in the cold storage container, so there is little wasted heat leakage and the specified temperature is maintained for a long time. Can be improved.
[0056]
When the bag body 10 is broken or the heat insulator 11 is broken after repeated use and the heat insulator 11 is discarded, the heat insulator 11 indicates that the material name of the heat insulator 11 and the vacuum heat insulator 22 are included. It is easy to separate and reuse.
[0057]
Furthermore, in the first embodiment, the lid 17 is provided with a flap 18 on the entire periphery and can be removed with a crimp fastener, but any one side may be sewn and rotatable. Also, in the heat insulator holding material 12, any one side may be sewn and rotatable. Further, a chuck may be used instead of the crimp fastener, and there is no particular limitation as long as the lid 17 can be securely locked to the main body 8.
[0058]
The combination of the vertical and horizontal dimensions of the main body 8 and the combination of the thicknesses of the heat insulator 11 and the vacuum heat insulating material 22 may be any combination as long as the object of the present invention is achieved, and is not particularly limited. Absent.
[0059]
In addition, if the vacuum heat insulating material has rigidity, the covering material as a heat insulator can be omitted, and as the heat insulator, the coating material or the outer covering material of the vacuum heat insulating material is used for the water resistance of the heat insulator holding material and the protection of the heat insulator. If the required specifications such as the above can be satisfied, the heat insulator holding material can be omitted.
[0060]
In addition, the heat insulation performance of the foldable cold storage container of the present invention means that the regenerator has the heat insulation performance of maintaining a predetermined temperature for a predetermined time with the regenerator and the number thereof shown in the first embodiment. It does not require the regenerator shown in the claims.
[0061]
【The invention's effect】
As described above, the invention according to claim 1 has a main body having a heat insulator on each inner surface of a bottomed bag body having one open side, and a heat insulator on an inner side surface, and an open surface of the main body. The main body is configured to be foldable by stacking a heat insulator disposed on the front surface, the rear surface, both side surfaces, and the bottom surface on the bottom surface of the bag body. The occupied area becomes the same substantially rectangular parallelepiped as that of the main body by folding and closing the lid on the main body, and the height of the substantially rectangular parallelepiped is 240 mm or less. It is foldable, has a small volume, can save space, and can improve transport efficiency and storage efficiency during forwarding.
[0062]
Further, the invention according to claim 2 has a main body having a heat insulator on each inner surface of a bottomed bag body whose one surface is open, and a heat insulator on the inner side surface, and covers an open surface of the main body. The main body is configured to be foldable by laminating a heat insulator disposed on the front surface, the rear surface, both side surfaces, and the bottom surface on the bottom surface of the bag body. By folding and locking the lid on top of it, the occupied area becomes the same substantially rectangular parallelepiped as that of the main body, and a regenerator bag is provided at least inside the lid or the main body, and the melting point is −5 ° C. to −3 ° C. Has a heat insulating property capable of maintaining an average temperature in a container at 3 ° C. ± 3K for 10 hours or more by using at least one regenerator for an internal volume of 30 liters, and maintaining a predetermined temperature longer than before. Can transport small cargo that needs low-temperature storage It becomes possible to ensure a longer retention of cold quality in transport, it is possible to also use the transport between the delivery bases long distance is assumed.
[0063]
According to a third aspect of the present invention, in the first aspect of the invention, a regenerator bag is provided at least inside the lid or the main body, and a regenerator having a melting point of −5 ° C. to −3 ° C. has at least an inner volume of 30 °. Uses one per liter and has heat insulation performance that can maintain the average temperature in the container at 3 ° C. ± 3K for 6 hours or more. It can be folded more compactly than before, has a smaller volume, saves space, and transports it. In addition to improving the transportation efficiency and storage efficiency at the time, the cold storage quality of small-sized transportation of transportation cargo requiring low-temperature storage can be sufficiently maintained with a small amount of a regenerator.
[0064]
The invention according to claim 4 is the invention according to any one of claims 3 to 3, wherein the internal volume is 100 liters or more, and a sufficient capacity is secured for the cargo transported in small-lot transportation. can do.
[0065]
The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the bottom surface of the main body is a rectangle having a side of 450 mm or more and 680 mm or less. And can be loaded efficiently.
[0066]
According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the heat insulator surrounds a periphery of the vacuum heat insulating material with a covering material, and the heat insulating performance is improved by the vacuum heat insulating material. Even if the heat insulation performance is remarkably improved, a predetermined heat insulation and heat insulation performance can be obtained even with a thin heat insulator, and the cold insulation time during transportation can be extended, and the heat insulation performance can be maintained by the coating material protecting the vacuum heat insulation material. .
[0067]
According to a seventh aspect of the present invention, the vacuum heat insulating material is obtained by covering a core material obtained by compression-molding a fiber material with a jacket material having a high gas barrier property, and depressurizing the inside to vacuum-enclose the core material. By using an excellent vacuum heat insulating material, a predetermined heat insulation and heat insulation performance can be obtained even with a thinner heat insulator, and the cold insulation time during transportation can be further extended.
[0068]
The invention according to claim 8 is the invention according to any one of claims 1 to 6, wherein the thickness of the heat insulator is 10 mm or more and 35 mm or less. The height becomes 240 mm or less, and the transportation efficiency and the storage efficiency can be improved.
[0069]
According to a ninth aspect of the present invention, in the invention according to any one of the first to sixth aspects, the initial thermal conductivity of the heat insulator is set to 0.015 W / mK or less. The temperature can be maintained for a predetermined time.
[0070]
According to a tenth aspect of the present invention, in any one of the sixth to ninth aspects, the thickness of the vacuum heat insulating material is set to 2 mm or more and 35 mm or less, and a combination with a covering material surrounding the periphery is provided. In addition, a predetermined heat insulating performance can be obtained even if the thickness is small, and the rigidity as a heat insulator can be secured by the covering material.
[0071]
The invention according to claim 11 is the invention according to any one of claims 6 to 10, wherein the initial thermal conductivity of the vacuum heat insulating material is 0.01 W / mK or less. By reducing the thermal conductivity of the heat insulator combined with the coating material, the heat insulator can be made thinner.
[0072]
According to a twelfth aspect of the present invention, in the invention according to any one of the first to ninth aspects, the heat insulator is housed so as to be able to be taken in and out of a heat insulator holding material surrounding the entire periphery. The bag and the bag are made of a water-resistant fabric, and there is no adverse effect such as expansion and contraction of the fabric due to moisture absorption, and the position of the heat insulator does not shift. Further, when the heat insulator is damaged, it can be easily replaced.
[0073]
The invention according to claim 13 is that the water-resistant fabric is made of a polyester fabric subjected to waterproof processing, and there is almost no gas leakage in the cold storage container, so that there is little unnecessary heat leakage, and the cold storage performance is improved. Can be contributed to.
[0074]
Further, the invention according to claim 14 is the invention according to any one of claims 1 to 11, wherein the name of the material constituting the heat insulator and the fact that the vacuum heat insulator is included are specified. In addition, it becomes easy to separate and reuse the heat insulator at the time of disposal.
[Brief description of the drawings]
FIG. 1 is a perspective view of a foldable cold storage container according to a first embodiment of the present invention.
FIG. 2 is a perspective view of the foldable cold storage container according to the first embodiment of the present invention in a folded state.
FIG. 3 is a sectional view of the foldable cold storage container according to the first embodiment of the present invention in a folded state;
FIG. 4 is a cross-sectional view of the heat insulator of the folding cold storage container according to the first embodiment of the present invention.
FIG. 5 is a schematic view showing the folding refrigerated container according to the first embodiment of the present invention loaded on a roll pallet;
FIG. 6 is a schematic diagram of the folding cold storage container according to the first embodiment of the present invention folded and loaded on a roll pallet;
FIG. 7 is a characteristic diagram showing a change over time in an average temperature in the container of the foldable insulated container according to the first embodiment of the present invention in comparison with a conventional product
FIG. 8 is a perspective view of a conventional folding cold storage container.
FIG. 9 is a schematic view of a conventional foldable cold storage container folded and loaded on a roll pallet.
[Explanation of symbols]
8 Body
9 Bottom
10 bags
11,11a, 11b heat insulator
12 Insulation holding material
13a Front and back
13b Both sides
17 Lid
22 Vacuum insulation
23 Coating material
24 core material
25 Jacket material
27 Cool storage bag
28 Cool storage agent
H height
A. Foldable insulated container in the assembled state
B Foldable refrigerated container in a folded state

Claims (14)

一面が開放された有底の袋体の内側各面に断熱体を有する本体と、内側面に断熱体を有し、前記本体の開放面を被蔽する蓋体とからなり、前記本体は、前面、後面、両側面、及び底面にそれぞれ配設された断熱体を前記袋体の底面に積層することにより折り畳み可能に構成され、折り畳み時には、前記本体を折り畳んだ上に蓋体を重ねて係止することにより占有面積が前記本体と同一の略直方体となるもので、前記略直方体の高さが240mm以下である折り畳み式保冷容器。A main body having a heat insulator on each inner surface of a bottomed bag body having one open side, and a lid body having a heat insulator on the inner side surface and covering an open surface of the main body, wherein the main body is It is configured to be foldable by laminating heat insulators respectively provided on the front surface, the rear surface, both side surfaces, and the bottom surface on the bottom surface of the bag body. A foldable cold storage container, wherein the occupied area becomes the same substantially rectangular parallelepiped by stopping, and the height of the substantially rectangular parallelepiped is 240 mm or less. 一面が開放された有底の袋体の内側各面に断熱体を有する本体と、内側面に断熱体を有し、前記本体の開放面を被蔽する蓋体とからなり、前記本体は、前面、後面、両側面、及び底面にそれぞれ配設された断熱体を前記袋体の底面に積層することにより折り畳み可能に構成され、折り畳み時には、前記本体を折り畳んだ上に蓋体を重ねて係止することにより占有面積が前記本体と同一の略直方体となるもので、少なくとも蓋体又は本体の内側に蓄冷剤袋を設け、融点が−5℃〜−3℃の蓄冷剤を少なくとも内容積30リットルにつき1個使用して、容器内の平均温度を3℃±3Kで10時間以上保持可能な断熱性能を有する折り畳み式保冷容器。A main body having a heat insulator on each inner surface of a bottomed bag body having one open side, and a lid body having a heat insulator on the inner side surface and covering an open surface of the main body, wherein the main body is It is configured to be foldable by laminating heat insulators respectively provided on the front surface, the rear surface, both side surfaces, and the bottom surface on the bottom surface of the bag body. When stopped, the occupied area becomes substantially the same rectangular parallelepiped as that of the main body, a cold storage agent bag is provided at least inside the lid or the main body, and a cold storage agent having a melting point of −5 ° C. to −3 ° C. is filled in at least 30 volumes. A foldable cold storage container having heat insulation performance that can be used at a temperature of 3 ° C. ± 3K for 10 hours or more by using one per liter. 少なくとも蓋体又は本体の内側に蓄冷剤袋を設け、融点が−5℃〜−3℃の蓄冷剤を少なくとも内容積30リットルにつき1個使用して、容器内の平均温度を3℃±3Kで6時間以上保持可能な断熱性能を有する請求項1記載の折り畳み式保冷容器。At least a regenerator bag is provided inside the lid or the main body, and at least one regenerator having a melting point of −5 ° C. to −3 ° C. per 30 liters of internal volume is used, and the average temperature in the container is 3 ° C. ± 3K. The foldable cold storage container according to claim 1, which has a heat insulating property capable of holding for 6 hours or more. 内容積が100リットル以上である請求項1から3のうちいずれか一項記載の折り畳み式保冷容器。The foldable cold storage container according to any one of claims 1 to 3, wherein the internal volume is 100 liters or more. 底面は、一辺が450mm以上680mm以下の矩形である請求項1から4のうちいずれか一項記載の折り畳み式保冷容器。The foldable cold storage container according to any one of claims 1 to 4, wherein the bottom surface is a rectangle having one side of 450 mm or more and 680 mm or less. 断熱体は真空断熱材の周囲を被覆材で包囲したものである請求項1から5のうちいずれか一項記載の折り畳み式保冷容器。The foldable cold storage container according to any one of claims 1 to 5, wherein the heat insulator surrounds a vacuum heat insulating material with a coating material. 真空断熱材は、繊維材料を圧縮成形した芯材をガスバリア性が高い外被材で覆って内部を減圧して真空封入したものである請求項6記載の折り畳み式保冷容器。7. The foldable cold storage container according to claim 6, wherein the vacuum heat insulating material is a core material obtained by compression-molding a fiber material, covered with a jacket material having a high gas barrier property, and the inside thereof is decompressed and vacuum-sealed. 断熱体の厚みは10mm以上35mm以下である請求項1から6のうちいずれか一項記載の折り畳み式保冷容器。The foldable cold storage container according to any one of claims 1 to 6, wherein a thickness of the heat insulator is 10 mm or more and 35 mm or less. 断熱体の初期熱伝導率は0.015W/mK以下である請求項1から6のうちいずれか一項記載の折り畳み式保冷容器。The foldable cold storage container according to any one of claims 1 to 6, wherein an initial thermal conductivity of the heat insulator is 0.015 W / mK or less. 真空断熱材の厚みは2mm以上35mm以下である請求項6から9のうちいずれか一項記載の折り畳み式保冷容器。The foldable cold storage container according to any one of claims 6 to 9, wherein the thickness of the vacuum heat insulating material is 2 mm or more and 35 mm or less. 真空断熱材の初期熱伝導率は0.01W/mK以下である請求項6から10のうちいずれか一項記載の折り畳み式保冷容器。The foldable cold storage container according to any one of claims 6 to 10, wherein an initial thermal conductivity of the vacuum heat insulating material is 0.01 W / mK or less. 断熱体は、断熱体全周を包囲する断熱体保持材に出し入れ可能に収納され、前記断熱体保持材と前記袋体とは耐水性を有する生地により構成された請求項1から9のうちいずれか一項記載の折り畳み式保冷容器。The heat insulator is housed so as to be able to be taken in and out of a heat insulator holding material surrounding the entire periphery of the heat insulator, and the heat insulator holding material and the bag are made of water-resistant cloth. The foldable cold storage container according to claim 1. 耐水性を有する生地が、ポリエステル生地に防水加工を施したものである請求項10記載の折り畳み式保冷容器。The foldable cold storage container according to claim 10, wherein the water-resistant fabric is a polyester fabric subjected to a waterproof process. 断熱体を構成する材料名と、真空断熱材が内包されていることとを明記した請求項1から11のうちいずれか一項記載の折り畳み式保冷容器。The foldable cold storage container according to any one of claims 1 to 11, wherein a name of a material forming the heat insulator and a fact that a vacuum heat insulating material is included are specified.
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CN102730319A (en) * 2012-06-11 2012-10-17 张家港首博电子材料有限公司 Anti-freezing thermal insulation packing box
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JP2014167380A (en) * 2013-02-28 2014-09-11 Nippon Light Metal Co Ltd Cold insulation box with cold storage function and cold storage method using the same
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JP2021008313A (en) * 2019-07-02 2021-01-28 大日本印刷株式会社 Heat insulation container that uses vacuum heat insulation material and includes heat storage material
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JP2006194503A (en) * 2005-01-12 2006-07-27 Taiyo Kogyo Corp Cold insulation and cooling device
JP2007240021A (en) * 2006-03-06 2007-09-20 Matsushita Electric Ind Co Ltd Folding-type cool box
JP2007253974A (en) * 2006-03-22 2007-10-04 Kurabo Ind Ltd Heat insulating body, opposing structure, and insulating container
JP2007276817A (en) * 2006-04-05 2007-10-25 Costem:Kk Heat-insulating container
JP2008201438A (en) * 2007-02-19 2008-09-04 Kurabo Ind Ltd Folding type thermal insulation container
KR100777105B1 (en) * 2007-03-30 2007-11-19 주식회사 파리크라상 Case for carrying and storing cake
CN102303750A (en) * 2011-08-24 2012-01-04 山东兰桥医学科技有限公司 Medical insulation can
CN102730319A (en) * 2012-06-11 2012-10-17 张家港首博电子材料有限公司 Anti-freezing thermal insulation packing box
JP2014167380A (en) * 2013-02-28 2014-09-11 Nippon Light Metal Co Ltd Cold insulation box with cold storage function and cold storage method using the same
CN103662435A (en) * 2013-11-30 2014-03-26 南通四方冷链装备股份有限公司 Novel cold chain heat-insulation box
JP2015147600A (en) * 2014-02-06 2015-08-20 株式会社イノアックコーポレーション Heat insulation container
AT515998A1 (en) * 2014-06-23 2016-01-15 Gerfried Dipl Ing Cebrat Energy and space-saving foldable transport box
JP2016011795A (en) * 2014-06-30 2016-01-21 トッパン・フォームズ株式会社 Storage container
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CN105890254B (en) * 2016-05-05 2018-06-19 上海理工大学 Refrigerated transport case
CN106568257A (en) * 2016-10-20 2017-04-19 青岛海尔股份有限公司 Cold storage box
CN106568257B (en) * 2016-10-20 2019-03-08 青岛海尔股份有限公司 Cold-accumulating box
JP2018136705A (en) * 2017-02-21 2018-08-30 大日本印刷株式会社 Information display body
JP2019073342A (en) * 2019-02-14 2019-05-16 大日本印刷株式会社 Cold/heat insulation container and storage method of cold/heat insulation container
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JP2021008314A (en) * 2019-07-02 2021-01-28 大日本印刷株式会社 Heat insulation container that uses vacuum heat insulation material and includes heat shielding sheet
JP7463669B2 (en) 2019-07-02 2024-04-09 大日本印刷株式会社 Insulated containers using vacuum insulation and equipped with heat storage material
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