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JP4843211B2 - cardboard - Google Patents
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JP4843211B2 - cardboard - Google Patents

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JP4843211B2
JP4843211B2 JP2004315319A JP2004315319A JP4843211B2 JP 4843211 B2 JP4843211 B2 JP 4843211B2 JP 2004315319 A JP2004315319 A JP 2004315319A JP 2004315319 A JP2004315319 A JP 2004315319A JP 4843211 B2 JP4843211 B2 JP 4843211B2
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core
gap
corrugated cardboard
heat
cardboard
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JP2006123376A (en
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進 守田
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Description

この発明は段ボール、詳しくは、段ボールの内側に形成されている空隙内への異物の混入や小動物の侵入を防げる様にした段ボールに関するものである。   The present invention relates to a corrugated cardboard, and more particularly to a corrugated cardboard which can prevent foreign matters from entering a gap formed inside the corrugated cardboard and the entry of small animals.

一般的な段ボールは図1及び図2に示す様に、波板状に屈曲した中芯2と、その一方あるいは両方の面に接合されたライナー3とにより構成されており、その内部には平行に多数の空隙5が形成されている。この段ボールは剛性が大きい上に比較的軽量、かつ加工が容易しかも安価であるという特徴により、各種収納運搬用や緩衝用などの基礎資材として多く利用されている。
なし なし
As shown in FIGS. 1 and 2, a general corrugated cardboard is composed of a core 2 bent into a corrugated plate and a liner 3 joined to one or both surfaces thereof, and the inside thereof is parallel to the inside. A large number of voids 5 are formed in the upper surface. This corrugated cardboard is widely used as a basic material for various types of storage and transportation and cushioning because of its high rigidity, relatively light weight, easy processing, and low cost.
None None

段ボールは上述の通り、中芯2とライナー3との間に空隙5が形成されているので、構造上、少なくとも一対の側縁7、7にはこの空隙5の開口端6が位置していることになる。従って、この段ボールを倉庫等に積重ねて一時保管した際などに、この開口端6から空隙5の内側に異物が混入したり、昆虫などの小動物が侵入して巣を作ったり、産卵孵化したりすることがあった。食品や衣類、あるいは精密機器などの保管用や輸送用の資材として段ボールを用いる場合には、段ボール内への異物の混入や小動物の侵入は、衛生面、機器類の故障防止などの観点から絶対に避けなければならず、特に食品関係用の段ボールの場合、異物の混入や小動物の侵入、孵化は社会問題化する程の重大な欠陥として扱われており、関係業者は計り知れない程のダメージを被ることがあった。従来からこれを避ける為、細心の注意が払われていたが、完全とは言えず、長期間の保管の際などに、特にこれら異物の混入や小動物の侵入、孵化が発生しやすかった。   As described above, the corrugated board is formed with the gap 5 between the core 2 and the liner 3, so that the open end 6 of the gap 5 is positioned at least on the pair of side edges 7 and 7 in terms of structure. It will be. Therefore, when this corrugated cardboard is stacked and temporarily stored in a warehouse or the like, foreign matter is mixed into the gap 5 from the open end 6, or a small animal such as an insect invades to form a nest or to hatch eggs There was something to do. When corrugated cardboard is used as a material for storage or transportation of food, clothing, precision equipment, etc., foreign matter entering the cardboard or entry of small animals is absolutely necessary from the standpoint of hygiene and prevention of equipment malfunction. Especially in the case of corrugated cardboard for food, contamination of foreign objects, invasion of small animals, and hatching are treated as serious defects that become social problems, and the contractors are immeasurable. Have suffered. In the past, careful attention was paid to avoid this, but it could not be said to be complete, and during long-term storage, contamination of these foreign substances, entry of small animals, and hatching were particularly likely to occur.

これを避ける為には、空隙5の開口端6を閉塞してしまえば良いことは従来から分かっており、粘着テープなどで開口端6をシールする試みなどもなされているが、テープの貼付作業は面倒であると共に、はがれやすく信頼性に欠けるなどの欠点があり、根本的な解決策とは言えなかった。   In order to avoid this, it has been known that the opening end 6 of the gap 5 should be closed, and attempts have been made to seal the opening end 6 with an adhesive tape or the like. Is troublesome and has the disadvantages that it is easy to peel off and lacks reliability, so it was not a fundamental solution.

又、段ボールの側縁7を折り曲げて開口端6を閉塞する試みもなされているが、一般的な段ボールの場合、直線状にしか折り曲げられないので、側縁7が曲線状や屈曲している場合には、この折り曲げによる開口端6の閉塞は不可能であった。   Also, attempts have been made to close the open end 6 by bending the side edge 7 of the cardboard. However, in the case of a general cardboard, the side edge 7 is curved or bent. In some cases, it was impossible to close the open end 6 by this bending.

本発明者は段ボールに関する上記問題点を解決せんとして鋭意研究を行った結果、極めて簡単な構造ながら、中芯2とライナー3との間に形成される空隙5の開口端6を確実に閉塞することが出来る便利な段ボールを開発することに成功し、本発明としてここに提案するものである。   As a result of diligent research to solve the above-mentioned problems related to cardboard, the present inventor reliably closes the open end 6 of the gap 5 formed between the core 2 and the liner 3 with a very simple structure. We have succeeded in developing a convenient corrugated cardboard that can be used, and are proposed here as the present invention.

中芯2とライナー3とからなり、中芯2とライナー3との間に空隙5が形成されている段ボールにおいて、中芯2の表裏両面に熱溶着性樹脂層4を形成し、前記空隙5の開口端6が位置している側の側縁7を加熱した押圧材8の押圧によって押し潰し、前記熱溶着性樹脂層4を形成している熱溶着性樹脂の接着作用でこの開口端6を閉塞することにより、上記課題を解決した。   In a corrugated cardboard comprising a core 2 and a liner 3, and a gap 5 is formed between the core 2 and the liner 3, a heat-welding resin layer 4 is formed on both front and back surfaces of the core 2, and the gap 5 The side edge 7 on the side where the opening end 6 is located is crushed by the pressing of the heated pressing member 8, and the opening end 6 is bonded by the heat welding resin forming the heat welding resin layer 4. The above-mentioned problem was solved by closing the door.

この発明に係る段ボールにおいては、加熱した押圧材8で押圧するだけで、中芯2とライナー3との間に形成された空隙5の開口端6を確実に閉塞することが出来るので、空隙5の開口端6の閉塞の為に別途接着剤や粘着テープなどの資材を用意する必要がなく、様々な作業現場において必要に応じて簡単確実かつ迅速に空隙5の開口端6の閉塞作業を実施することが可能である。又、開口端6の閉塞は単に直線状に行えるだけではなく、押圧材8の押圧面の形状やその動き方を工夫することにより、曲線状、ジグザグ状その他任意の形状で行うことが出来、段ボールの用途に応じた最適な加工処理が可能である。更に、中芯2には熱溶着性樹脂層4が形成されているだけであり、この熱溶着性樹脂自体は常温においては粘着性は全くないので、空隙5の開口端6の閉塞を必要としない場合には、そのまま通常の段ボールとして用いることが出来、段ボールとしての利用範囲が広いなどすぐれた汎用性を有している。   In the corrugated cardboard according to the present invention, the opening end 6 of the gap 5 formed between the core 2 and the liner 3 can be reliably closed only by pressing with the heated pressing material 8. It is not necessary to prepare a separate material such as adhesive or adhesive tape to close the open end 6 of the air gap, and the open end 6 of the gap 5 can be easily and quickly closed as needed at various work sites. Is possible. Moreover, the opening end 6 can be closed not only in a straight line but also in a curved shape, a zigzag shape, or any other shape by devising the shape of the pressing surface of the pressing member 8 and how it moves, Optimal processing according to the use of corrugated cardboard is possible. Further, only the heat-welding resin layer 4 is formed on the core 2, and the heat-welding resin itself has no adhesiveness at room temperature, so that the opening end 6 of the gap 5 needs to be blocked. If not, it can be used as a normal cardboard as it is, and has excellent versatility such as a wide range of use as a cardboard.

中芯2の表裏両面に熱溶着性樹脂層4を形成せしめ、これによって中芯2とライナー3とを押し潰した状態で確実に接合出来る様にした点に本質的特徴がある。   An essential feature is that the heat-welding resin layers 4 are formed on both the front and back surfaces of the core 2 so that the core 2 and the liner 3 can be reliably joined in a crushed state.

以下、図面を参照しながら、本発明に係る段ボールの実施例について説明する。図3はこの発明に係る段ボールの実施例1の全体の斜視図、図4は図における矢視A−A線部分の部分拡大断面図、図5は同じく図における矢視B−B線部分の部分拡大断面図、図6は同じく、部分拡大斜視図である。 Hereinafter, embodiments of the cardboard according to the present invention will be described with reference to the drawings. Figure 3 is a whole perspective view of a first embodiment of the cardboard according to the present invention, FIG. 4 is a partially enlarged cross-sectional view of arrow A-A line portion in FIG. 3, arrow line B-B in FIG. 5 is also 3 Similarly, FIG. 6 is a partially enlarged perspective view of a part.

図中1は段ボール本体であり、従来の一般的な段ボール同様、波板状に屈曲した中芯2がライナー3によってサンドイッチされた構造であり、中芯2とライナー3とによって平行に多数の筒状をした空隙5が形成されている。そして、図4に示す様に、この中芯2の表裏両面にはポリエチレン系などの熱溶着性樹脂がコーティングされ、熱溶着性樹脂層4が形成されている。なお、ここで熱溶着性樹脂とは、加熱すると粘稠状態になり、他の物体に貼り付く性質を有する合成樹脂のことを言う。   In the figure, reference numeral 1 denotes a corrugated cardboard body. Like a conventional corrugated cardboard, a core 2 bent in a corrugated plate shape is sandwiched between liners 3, and a number of tubes are paralleled by the core 2 and the liner 3. A void 5 having a shape is formed. As shown in FIG. 4, the front and back surfaces of the core 2 are coated with a heat-welding resin such as polyethylene to form a heat-welding resin layer 4. Here, the heat-weldable resin refers to a synthetic resin that becomes viscous when heated and has a property of sticking to other objects.

そして、この段ボール本体1の空隙5の開口端6が位置している側の側縁7は、図7に示す様に、加熱された押圧材8による押圧によって押し潰されており、図5及び図6に示す様に、熱溶着性樹脂層4が中芯2とライナー3との間に介在し、これによって開口端6は閉塞されている。なお、上記実施例においては、押圧材8として、段ボール本体1の表裏方向から挟み込むホットプレスを用いたが、図8に示す様に、ローラー状のものでも良く、又、図9に示す様に、押圧しながらスライドするブロック状の部材であっても良い。又、側縁7を直線状に押し潰すだけではなく、押圧材8の押圧面の形状を適宜変更したり、その動き方を工夫することにより、図10に示す様に曲線状に押し潰したり、図11に示す様にジグザグ状に押し潰しても良い。なお、図10及び図11中、9は押圧材8によって形成された押し潰し代(しろ)である。   Then, the side edge 7 on the side where the open end 6 of the gap 5 of the corrugated cardboard body 1 is located is crushed by pressing with a heated pressing member 8, as shown in FIG. As shown in FIG. 6, the heat-welding resin layer 4 is interposed between the core 2 and the liner 3, thereby closing the open end 6. In the above embodiment, a hot press sandwiched from the front and back sides of the corrugated cardboard body 1 is used as the pressing member 8, but it may be a roller-shaped one as shown in FIG. 8, or as shown in FIG. A block-like member that slides while pressing may be used. Further, not only the side edge 7 is crushed linearly, but also the shape of the pressing surface of the pressing member 8 is changed as appropriate, or the way of movement is devised to crush it into a curved shape as shown in FIG. As shown in FIG. 11, they may be crushed in a zigzag shape. In FIGS. 10 and 11, reference numeral 9 denotes a crushing margin formed by the pressing material 8.

なお、熱溶着性樹脂層4は中芯2の片面ではなく両面に形成されているので、押圧材8によって押し潰した際に、中芯2とライナー3とが不規則にどの様に折り重なったとしても、図5及び図6に示す様に、中芯2とライナー3との間には必ず熱溶着性樹脂層4が介在しており、熱溶着性樹脂層4が途切れることはなく、部分的な接着不良に起因する隙間が発生する余地はない。   In addition, since the heat-welding resin layer 4 is formed on both sides instead of one side of the core 2, how the core 2 and the liner 3 are irregularly folded when crushed by the pressing material 8. However, as shown in FIGS. 5 and 6, the heat-welding resin layer 4 is always interposed between the core 2 and the liner 3, and the heat-welding resin layer 4 is not interrupted. There is no room for gaps due to poor adhesion.

なお、上記実施例は、ライナー2が中芯1の表裏両面に存在する所謂タブルサーフェースタイプの段ボールに関するものであるが、図12に示すものの様に、中芯2の一方の面にのみライナー3が貼り付いている所謂シングルサーフェースタイプの段ボールであっても良いことはもちろんであり、この場合にも、押圧材8によって押し潰すことにより、図13に示す様な、空隙5の開口端6が閉塞された段ボールとすることが出来る。   The above-mentioned embodiment relates to a so-called double surface type corrugated cardboard in which the liner 2 is present on both the front and back surfaces of the core 1, but the liner only on one surface of the core 2 as shown in FIG. Of course, a so-called single surface type corrugated cardboard with 3 attached thereto may be used, and in this case as well, by crushing with the pressing material 8, the open end of the gap 5 as shown in FIG. Corrugated cardboard 6 is closed.

この実施例1は上述の通りの構成を有するものであり、加熱された押圧材8で押圧するだけで、中芯2とライナー3との間に形成される空隙5の開口端6を確実に閉塞することが出来、空隙5の開口端6の閉塞の為に別途接着剤や粘着テープなどの資材を用意する必要がなく、様々な作業現場において必要に応じて、簡単確実かつ迅速に空隙5の開口端6の閉塞作業を実施することが可能である。又、開口端6の閉塞は単に直線状に行えるだけではなく、押圧材8の押圧面の形状やその動き方を工夫することにより、曲線状、ジグザグ状その他任意の形状で行うことが出来、段ボールの用途に応じた最適な加工処理が可能である。   This Example 1 has the configuration as described above, and the opening end 6 of the gap 5 formed between the inner core 2 and the liner 3 can be reliably secured only by pressing with the heated pressing material 8. There is no need to prepare a separate material such as an adhesive or adhesive tape for closing the opening end 6 of the gap 5, and the gap 5 can be easily and reliably and quickly as required at various work sites. It is possible to carry out the closing operation of the open end 6 of this. Moreover, the opening end 6 can be closed not only in a straight line but also in a curved shape, a zigzag shape, or any other shape by devising the shape of the pressing surface of the pressing member 8 and how it moves, Optimal processing according to the use of corrugated cardboard is possible.

更に、中芯2には熱溶着性樹脂層4が形成されているだけで、熱溶着性樹脂自体は常温では粘着性が全くないので、空隙5の開口端6の閉塞を必要としない場合には、そのまま通常の段ボールとして用いることが出来、段ボールとしての利用範囲が広くすぐれた汎用性を有している。   Further, when the heat-sealable resin layer 4 is only formed on the core 2 and the heat-sealable resin itself has no adhesiveness at room temperature, it is not necessary to close the open end 6 of the gap 5. Can be used as a normal corrugated cardboard as it is, and has a wide versatility with a wide range of use as corrugated cardboard.

図14はこの発明に係る段ボールの実施例2の一部を切欠いて描いた斜視図であり、この実施例2において、中芯2にはエンボス状に突起9が多数形成されており、この突起9がスペーサーとして作用して中芯2とライナー3との間に空隙5が形成されている。この実施例2においては、前述の実施例1の場合と異なり、空隙5の開口端6は全周つまり四つの側縁7すべてに形成されている。そして、この実施例2においても中芯2の表裏には熱溶着性樹脂層4が形成されており、その側縁7は加熱された押圧材8による押圧によって押し潰されており、熱溶着性樹脂層4が中芯2とライナー3との間に介在し、その開口端6は閉塞されている。他は前述の実施例1と同様であり、同一符号を付してその説明を省略する。この実施例2においても明らかな通り、本発明においては、中芯2の形状には特に限定はなく、中芯2とライナー3との間に空隙5が形成される段ボールなら、すべて適用可能である。   FIG. 14 is a perspective view of the corrugated cardboard according to the second embodiment of the present invention, with a part cut away. In the second embodiment, the core 2 has a number of protrusions 9 formed in an embossed shape. 9 acts as a spacer, and a gap 5 is formed between the core 2 and the liner 3. In the second embodiment, unlike the first embodiment, the open end 6 of the gap 5 is formed on the entire circumference, that is, on all four side edges 7. And also in this Example 2, the heat welding resin layer 4 is formed in the front and back of the center core 2, The side edge 7 is crushed by the press by the heated press material 8, and heat weldability A resin layer 4 is interposed between the core 2 and the liner 3, and the opening end 6 is closed. Others are the same as the above-mentioned Example 1, attach | subject the same code | symbol and omit the description. As is apparent from Example 2, in the present invention, the shape of the core 2 is not particularly limited, and any corrugated cardboard in which a gap 5 is formed between the core 2 and the liner 3 can be applied. is there.

段ボールを用いるすべての産業分野で利用可能であるが、特に清潔さ清浄さが求められる食品業界、精密機器業界、繊維製品業界などにおいて高い利用価値を有する。   Although it can be used in all industrial fields that use corrugated cardboard, it has a high utility value especially in the food industry, precision equipment industry, textile industry, etc. where cleanliness is required.

従来の段ボールの代表例の一部を切欠いて描いた斜視図。The perspective view which notched and represented some typical examples of the conventional cardboard. 同じく、その部分拡大断面図。。Similarly, the partial expanded sectional view. . この発明に係る段ボールの一実施例の一部を切欠いて描いた斜視図。The perspective view which notched and depicted a part of one Example of the cardboard concerning this invention. 図3における矢視A−A線部分の部分拡大断面図。FIG. 4 is a partial enlarged cross-sectional view taken along line AA in FIG. 3. 同じく、図3における矢視B−B線部分の部分拡大断面図。Similarly, the partial expanded sectional view of the BB line part in FIG. 同じく、図3における矢視B−B線部分の部分拡大斜視図。Similarly, the partial expanded perspective view of the BB line part in FIG. この発明に係る段ボールの製造途中の状況を説明する部分拡大断面図。The partial expanded sectional view explaining the condition in the middle of manufacture of the cardboard concerning this invention. 同じく、押圧材8をローラータイプのものにした部分拡大断面図。Similarly, the partial expanded sectional view which made the pressing material 8 the thing of a roller type. 同じく、押圧材8をスライドするブロックタイプのものにした部分拡大断面図。Similarly, the partial expanded sectional view which made the pressing material 8 the thing of the block type which slides. 空隙5の開口端6を曲線状に押し潰した実施例の平面図。The top view of the Example which crushed the opening end 6 of the space | gap 5 in the shape of a curve. 空隙5の開口端6をジグザグ状に押し潰した実施例の平面図。The top view of the Example which crushed the opening end 6 of the space | gap 5 in zigzag form. シングルサーフェースタイプの段ボールに本発明を適用した場合の部分拡大断面図。The partial expanded sectional view at the time of applying this invention to the cardboard of a single surface type. 同じく、空隙5の開口端6を押し潰した状態の部分拡大断面図。Similarly, the partial expanded sectional view of the state which crushed the opening end 6 of the space | gap 5. FIG. この発明に係る段ボールの実施例2の斜視図。The perspective view of Example 2 of the cardboard concerning this invention.

符号の説明Explanation of symbols

1 段ボール本体
2 中芯
3 ライナー
4 熱溶着性樹脂層
5 空隙
6 開口端
7 側縁
8 押圧材
9 押し潰し代(しろ)
10 突起
DESCRIPTION OF SYMBOLS 1 Corrugated-card body 2 Center core 3 Liner 4 Heat-weldable resin layer 5 Cavity 6 Open end 7 Side edge 8 Pressing material 9 Crushing allowance (margin)
10 protrusion

Claims (3)

中芯(2)とライナー(3)とからなり、中芯(2)とライナー(3)との間に空隙(5)が形成されている段ボールであって、中芯(2)の表裏両面に熱溶着性樹脂層(4)が形成されており、前記空隙(5)の開口端(6)が位置している側の側縁(7)が加熱した押圧材(8)の押圧によって押し潰され、前記熱溶着性樹脂層(4)を形成している熱溶着性樹脂の接着作用で開口端(6)が閉塞されていることを特徴とする段ボール。 A corrugated cardboard comprising a core (2) and a liner (3), wherein a gap (5) is formed between the core (2) and the liner (3). A heat-weldable resin layer (4) is formed on the side edge (7) on the side where the open end (6) of the gap (5) is located, and is pressed by the heated pressing material (8). A corrugated cardboard, characterized in that the open end (6) is closed by the adhesive action of the heat-welding resin that is crushed and forms the heat-welding resin layer (4). 中芯(2)が波板状に屈曲しており、空隙(5)が平行な筒状空胴によって構成されていることを特徴とする請求項1記載の段ボール。 The corrugated cardboard according to claim 1 , wherein the core (2) is bent in a corrugated shape and the gap (5) is constituted by parallel cylindrical cavities. 中芯(2)に多数のエンボス状の突起(10)が形成されていることを特徴とする請求項1記載の段ボール。 The cardboard according to claim 1, wherein a number of embossed protrusions (10) are formed on the core (2) .
JP2004315319A 2004-10-29 2004-10-29 cardboard Expired - Fee Related JP4843211B2 (en)

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