JP3936211B2

JP3936211B2 - Packaging material for packaging cushioning and articles

Info

Publication number: JP3936211B2
Application number: JP2002061090A
Authority: JP
Inventors: 勤丸橋; 義光小林
Original assignee: Rinnai Corp
Current assignee: Rinnai Corp
Priority date: 2002-03-06
Filing date: 2002-03-06
Publication date: 2007-06-27
Anticipated expiration: 2022-03-06
Also published as: JP2003261179A

Description

【０００１】
【発明の属する技術分野】
本発明は、包装容器とその包装容器に収容された物品の間に配置して、搬送時等に物品にかかる衝撃を緩衝する包装用緩衝材と、その包装用緩衝材を用いた物品の包装構造に関する。
【０００２】
【従来の技術】
包装容器に各種物品を収容する場合、包装容器と物品の間の隙間が大きいと、搬送時等に物品ががたついて物品の損傷や変形が発生する恐れがある。よって、物品の損傷や変形の発生を抑制するため、包装容器と物品の間の隙間に包装用緩衝材を配置することが行われている。
従来、この種の包装用緩衝材としては、発泡スチロール等の合成樹脂を材料とした成形品や切出し品等がほとんどであった。しかし最近では、包装用緩衝材に対してもリサイクルの要請が高まりつつある。よって、リサイクル性の低い発泡スチロール等の合成樹脂は敬遠される傾向にある。そこで、紙製の包装用緩衝材が注目されている。
第１の従来技術として、実開平６−６５２７０号公報には、空洞部を有する紙パイプからなる包装用緩衝材が開示されている。
第２の従来技術として、実開平７−４０５３９号公報には、物品の嵌込み孔と物品の支持部が形成された複雑な形状の紙製の包装用緩衝材が開示されている。
【０００３】
【発明が解決しようとする課題】
しかし、第１の従来技術のような独立した紙パイプを包装容器と物品の間の所望の位置にそのままの状態で配置したとしても、包装容器の搬送等によって包装容器に何らかの外力が作用したときに、紙パイプの位置ずれが生じて衝撃緩衝性が低下する可能性が高い。また、第１の従来技術のような独立した紙パイプを所望の位置に１つ１つ配置していく作業は面倒である。第１の従来技術の公報には、紙パイプを用いた包装用緩衝材の具体的な構成や、その包装用緩衝材をどのように配置すればよいかという物品の包装構造についてはほとんど開示されていない。
一方、第２の従来技術の包装用緩衝材によれば、位置ずれが生じて衝撃緩衝性が低下する可能性は低いが、このような複雑な形状の包装用緩衝材を製造するためには、高度な又は煩雑な製造工程を経る必要があった。
【０００４】
以上の背景から、本発明者らは、以下の３つの条件を満たすような包装用緩衝材又はその包装用緩衝材を用いた物品の包装構造の実現を試みた。
（１）発泡スチロール等の合成樹脂からなる包装用緩衝材に比べてリサイクル性の高い包装用緩衝材であること。
（２）第１の従来技術のような独立した紙パイプをそのままの状態で用いた場合に比べて外力が加わっても衝撃緩衝性が低下しにくいこと。
（３）第２の従来技術のような複雑な形状の包装用緩衝材に比べて簡単に製造できること。
【０００５】
本発明者らはまた、以下のいずれかの条件も満たすような包装用緩衝材又は物品の包装構造の実現を試みた。
（４）第１の従来技術のような独立した紙パイプを所望の位置に１つ１つ配置していく作業に比べて包装用緩衝材の配置作業が容易であること。
（５）包装用緩衝材の一般的な諸特性の少なくとも１つを向上すること。例えば、衝撃緩衝性、取扱性、耐候性・耐湿性、耐圧強度・耐変形強度等を向上すること。望ましくは、従来の発泡スチロール品と同等又はそれに近い特性を実現すること。
本発明は、上記した本発明者らの試みの結果なされたものである。
【０００６】
【課題を解決するための手段及び作用と効果】本発明の一の態様の包装用緩衝材は、包装容器と物品の間に配置される包装用緩衝材である。この包装用緩衝材は、紙製シート材と、紙製シート材の少なくとも一方の面に取付けられた複数の紙パイプを備えている。
【０００７】
この包装用緩衝材は、シート材とパイプの両方が紙製である。よって、従来の合成樹脂からなる包装用緩衝材に比べて、リサイクル性が格段に高い。
この包装用緩衝材は、紙製シート材に複数の紙パイプが取付けられて構成されている。よって、複数の紙パイプは相対的な位置関係が保持されている。このため、第１の従来技術のような独立した紙パイプを用いた場合に比べて、包装容器の搬送等で外力が加わっても、紙パイプの位置ずれが生じて衝撃緩衝性が低下する可能性が格段に低い。
しかも、包装容器の搬送等で生じる衝撃は紙パイプのみならず紙製シート材にも分散する。よって、紙パイプのみを用いた場合に比べて、衝撃緩衝性が向上するというメリットもある。
また、複数の紙パイプが取付けられた状態の紙製シート材を包装容器と物品の間に配置すればよいので、包装容器と物品の間に紙パイプを１つずつ配置する場合に比べて、配置作業が容易である。
さらに、本発明に係る包装用緩衝材は紙製シート材に複数の紙パイプを取付ければ製造できるので、第２の従来技術である複雑な形状の包装用緩衝材に比べて、格段に容易に製造できる。
【０００８】
なお、第１の従来技術の公報の図４には、複数の紙パイプが連結されてシート状に形成された包装用緩衝材が開示されている。しかし、この包装用緩衝材は、紙パイプ同士が相互に連結されているものである。よって、一体的に製造する場合は、高度な製造工程が必要となる。あるいは、紙パイプを１つずつ接着等して連結する場合は、紙パイプの１つずつに接着剤を塗布する等して連結する必要があり、製造工程が煩雑となる。これに対し、本発明に係る包装用緩衝材は、例えば紙製シート材に一度に接着剤を塗布し、その紙製シートに連続して複数の紙パイプを取付ければ製造できる。このため、製造工程が簡単である。これらの点で、本発明に係る包装用緩衝材は、第１の従来技術の図４のシート状の包装用緩衝材と大きく相違する。
【０００９】
紙パイプが紙製シート材の一方の面のみに取付けられていることが好ましい。
この構成によると、紙製シート材を紙パイプ非取付面側に折曲げるときに、紙パイプが邪魔にならないので、紙製シート材を折曲げやすい。よって、取扱性が向上する。
この場合、紙製シート材の紙パイプ非取付面が物品に面接触していることが好ましい。
このように包装用緩衝材が配置された構造によると、物品と包装用緩衝材の良好な密着性を実現できる。このため、外力が加わることで紙パイプの位置ずれが生じて衝撃緩衝性が低下する可能性をより低くできる。
【００１０】
紙製シート材は折り目を有し、紙パイプが紙製シート材の折り目の山側がある面のみに取付けられていることが好ましい。
この構成によると、使用時には折り目に沿って谷側に折曲げることで、紙製シート材を簡単に所望の立体形状に成形できる。一方、不使用時には紙製シート材を展開して平面化できるので、かさ張りにくく、保管スペースを小さくできる。よって、取扱性が向上する。
【００１１】
紙パイプが折り目を介して配置された複数のパイプ取付領域に取付けられていることが好ましい。
この構成によると、物品の複数の面にかかる衝撃を１つの包装用緩衝材によって緩衝できる。即ち、衝撃緩衝性を向上できる。
【００１２】
各パイプ取付領域に、複数の紙パイプが互いに平行でかつ密着した状態で取付けられていることが好ましい。
この構成によると、衝撃緩衝性を向上できる。
【００１３】
紙製シート材の折り目の山側近傍に、折り目に沿って紙パイプが取付けられていることが好ましい。
この場合、紙製シート材の紙パイプ非取付面が物品に面接触しており、紙製シート材の折り目が物品の稜線に沿っていることが好ましい。
この構造によると、損傷や変形の発生し易い物品の稜線部位にかかる衝撃を緩衝できる。即ち、衝撃緩衝性を向上できる。
【００１４】
物品の高さ方向に沿って延びる紙パイプの少なくとも１つが、物品の上面又は下面から突出していることが好ましい。
この構造によると、物品の上面又は下面から突出した紙パイプによって、物品の上面又は下面を形成する稜線部位が保護された状態となる。よって、損傷や変形の発生し易い物品の稜線部位にかかる衝撃を緩衝できる。即ち、衝撃緩衝性を向上できる。
【００２２】
【発明の実施の形態】
後記する本発明の実施例の主要な特徴を記載する。
（形態１）紙パイプは、帯状紙を複数層にわたって螺旋状に巻付けて接着することで形成された積層構造を有する。
この構成によると、紙パイプが積層構造になっているため、表面から水分が浸透しにくく、普通の段ボール紙に比べて耐候性と耐湿性を格段に向上できる。このため、この紙パイプを用いた包装用緩衝材又は物品の包装構造によれば、発泡スチロール品にも匹敵する衝撃緩衝性、耐圧強度・耐変形強度を実現できる。
（形態２）形態１において、帯状紙の巻き付け方向は１層おきに異なっている。
この構成によると、巻き付け方向が１方向のみの場合に比べて、層数が少なくても紙パイプの剛性や弾性を高くできる。このため、衝撃緩衝性、耐圧強度・耐変形強度をより向上できる。
【００２３】
【実施例】
（第１実施例）図１に、第１実施例の包装用緩衝材とそれを用いた物品の包装構造を説明するための斜視図を示す。
図１に、紙製の包装容器の一種である蓋付きの段ボール箱２を示す。段ボール箱２は平型直方体である。その段ボール箱２には段ボール箱２よりも一回り小さい平型直方体の物品４が収容される。この物品４を段ボール箱２に収容した場合、段ボール箱２と物品４の間に隙間が生じる。このため、本実施例ではその隙間に紙製の包装用緩衝材６，８，１０を配置する。以下、これらの包装用緩衝材６，８，１０の構造について説明する。
【００２４】
図２（ｂ）（ｃ）に、紙製シート材１２に複数の紙パイプ１４を貼付けて構成された隅部保護用の包装用緩衝材６を示す。図２(ａ)に、隅部保護用の包装用緩衝材６の構成部材である紙製シート材１２を示す。
この包装用緩衝材６を構成する紙製シート材１２は略Ｔ字状に形成され、３つの位置に直線状の折り目１６を有する。図２（ａ）の折り目１６の山側は、一点鎖線で表す。折り目１６で区画された領域をパイプ取付領域１８，２０，２２と定義する。この紙製シート材１２には、矩形状のパイプ取付領域１８，２０，２２が計４つ形成されている。
【００２５】
図２（ｃ）に示すように、紙パイプ１４は、紙製シート材１２の折り目１６の山側がある方の面のみに取付けられており、折り目１６の谷側がある方の面には取付けられていない。説明の便宜上、紙製シート材１２の折り目１６の山側がある方の面を「紙パイプ取付面１２ａ」といい、折り目１６の谷側がある方の面を「紙パイプ非取付面１２ｂ」という。
【００２６】
図１と図２に示すように、最も面積の大きい第１のパイプ取付領域１８には、３本の紙パイプ１４が接着剤で貼付けられている。図１に示すように、第１のパイプ取付領域１８の長手方向の寸法は、物品４の高さとほぼ等しくなるように設計されている。第１のパイプ取付領域１８に貼付けられる各紙パイプ１４の長さは、第１のパイプ取付領域１８の長手方向の寸法よりも少し長く、段ボール箱２の高さと同程度となるように設計されている。これらの紙パイプ１４は、第１のパイプ取付領域１８の長手方向に沿って延びるように、かつ、両端部が第１のパイプ取付領域１８の長手方向に突出するように貼付けられている。また、各紙パイプ１４は互いに平行な状態であって、しかも周壁同士が全長にわたって密着した状態となっている。
【００２７】
３本の紙パイプ１４のうち、図２（ｂ）の左端に位置するものは、第１のパイプ取付領域１８とそれに次いで面積の大きい第２のパイプ取付領域２０を区画する折り目１６の山側近傍で、その折り目１６に沿って取付けられている。
【００２８】
図１と図２に示すように、第２のパイプ取付領域２０には、２本の紙パイプ１４が接着剤で貼付けられている。第２のパイプ取付領域２０の長手方向の寸法は、物品４の高さとほぼ等しくなるように設計されている。第２のパイプ取付領域２０に貼付けられる各紙パイプ１４の長さは、第２のパイプ取付領域２０の長手方向の寸法とほぼ等しくなるように設計されている。これらの紙パイプ１４は、第２のパイプ取付領域２０の長手方向に沿って延びるように、かつ、両端部が第２のパイプ取付領域２０から突出しないように貼付けられている。また、各紙パイプ１４は互いに平行な状態であって、しかも周壁同士が全長にわたって密着した状態となっている。
【００２９】
図１と図２に示すように、最も面積の小さい第３のパイプ取付領域２２は２つ存在しており、これらに対しては紙パイプ１４が２本ずつ接着剤で貼付けられている。第３のパイプ取付領域２２に貼付けられた各紙パイプ１４の長さは、第３のパイプ取付領域２２の長手方向の寸法とほぼ等しくなるように設計されている。これらの紙パイプ１４は、第３のパイプ取付領域２２の長手方向に沿って延びるように、かつ、両端部が第３のパイプ取付領域２２から突出しないように貼付けられている。また、各紙パイプ１４は互いに平行な状態であって、しかも周壁同士が全長にわたって密着した状態となっている。
【００３０】
ここで、紙パイプ１４の構造について説明する。紙パイプ１４は断面略円形状である。ここで「断面略円形状」とは、断面が真円形状であるものを含むことは勿論のこと、断面が真円形状ではないもの（例えば一部が欠けた断面円形状や形状など）を含む趣旨である。本実施例では断面真円形状のものを用いている。また、本実施例で「紙」とは、純粋に植物材料のみからなるものだけでなく、植物材料に金属や有機物等を少し添加した複合材料も含む。即ち、発泡スチロール等のような合成樹脂材料に比べてリサイクルが容易なものであれば、純粋に植物材料のみからなる材料に限定されない、という趣旨である。
【００３１】
本実施例で用いられる紙パイプ１４は積層構造を有している。この紙パイプ１４は、帯状紙を複数層にわたって螺旋状に巻付けて接着することで形成している。積層構造を採用した理由は、積層構造であると表面から水分が浸透しにくくなり、普通の単層の段ボール紙に比べて耐候性・耐湿性が数段優れたものになるからである。また、帯状紙の巻付け方向は１層おきに異なっており、右巻層と左巻層が交互に存在している。従って、巻付け方向が１方向のみの場合に比べて、層数が少なくても紙パイプ１４の強度は高い。また、本実施例では紙製シート材１２として段ボールシート材を用いている。
【００３２】
図３（ｂ）（ｃ）に、紙製シート材３２に複数の紙パイプ１４を貼付けてなる中央部保護用の包装用緩衝材８を示す。図３(ａ)に、中央部保護用の包装用緩衝材８の構成部材である紙製シート材３２を示す。
この包装用緩衝材８を構成する紙製シート材３２は細長い長方形状に形成され、１箇所に直線状の折り目１６を有する。図３（ａ）でも折り目１６の山側は一点鎖線で表す。この折り目１６によって２つのパイプ取付領域３４，３６が形成されている。
【００３３】
図３（ｃ）に示すように、紙パイプ１４は、紙製シート材３２の折り目１６の山側がある方の面のみ、つまり紙パイプ取付面３２ａのみに取付けられている。よって、紙製シート材３２の紙パイプ非取付面３２ｂに、紙パイプ１４は取付けられていない。
相対的に面積の大きい第１のパイプ取付領域３４には、２本の紙パイプ１４が接着剤で貼付けられている。第１のパイプ取付領域３４の長手方向の寸法は、物品４の横幅とほぼ等しくなるように設計されている。そこに貼付けられる各紙パイプ１４の長さは、第１のパイプ取付領域３４の長手方向の寸法と同程度となるように設計されている。相対的に面積の小さい第２のパイプ取付領域３６にも、２本の紙パイプ１４が接着剤で貼付けられている。第２のパイプ取付領域３６の長手方向の寸法は、物品４の高さとほぼ等しくなるように設計されている。そこに貼付けられる各紙パイプ１４の長さは、第２のパイプ取付領域３６の長手方向の寸法と同程度となるように設計されている。
【００３４】
これらの紙パイプ１４は、第１のパイプ取付領域３４の長手方向に沿って延びるように貼付けられるとともに、互いに平行な状態かつ周壁同士が全長にわたって密着した状態となっている。なお、紙パイプ１４としては上記した積層紙パイプを用いている。紙製シート材３２としては上記した段ボールシート材を用いている。
図１には、稜線保護用の包装用緩衝材１０も示されている。この包装用緩衝材１０は、紙パイプ１４のみからなり紙製シート材を備えていない。この包装用緩衝材１０は、物品４の縦寸法とほぼ同じ長さを有するとともに、物品４の稜線３８に沿って配置されるようになっている。「稜線」とは、一般に、多面体における平面同士の交わりの線分を意味する。
【００３５】
次に、これらの包装用緩衝材６，８，１０の使用方法を説明する。図１に示す使用時において隅部保護用の包装用緩衝材６は、それぞれ折り目１６（図２参照）に沿って紙製シート材１２をパイプ非取付面１２ｂ側に９０度折曲げた状態で使用される。そして、折曲げることで所定形状に成形された包装用緩衝材６を４つ用い、これらを物品４の各々の隅部を覆うようにして配置する。その際、紙製シート材１２の紙パイプ非取付面１２ｂを物品４に面接触させる。このように配置した場合、物品４の高さ方向に延びる折り目１６は、物品４の高さ方向の稜線３８に沿って配置される。その折り目１６の近傍には１本の紙パイプ１４が貼付けられているので、結果的にその紙パイプ１４は物品４の高さ方向に沿って延びる稜線３８に沿って配置される。また、物品４の高さ方向に沿って延びる紙パイプ１４のうちの３本（詳しくは第１のパイプ取付領域１８に貼付けられた３本）は、その両端部が物品４の上面及び下面から突出した状態となる。なお、本実施例では、１個の包装用緩衝材６によって、物品４の隣接した４面が保護されている。
【００３６】
一方、図１に示す使用時において中央部保護用の包装用緩衝材８は、折り目１６（図３参照）に沿って紙製シート材３２を紙パイプ非取付面３２ｂ側に９０度折曲げた状態で使用される。その際、紙製シート材３２の紙パイプ非取付面３２ｂを物品４に面接触させる。本実施例では、１個の包装用緩衝材８によって、物品４の隣接した２面（側面と上面）が保護されている。この包装用緩衝材８をもう１個用いれば、物品４の側面と下面も保護できる。
図１に示す使用時において稜線保護用の包装用緩衝材１０は、中央部保護用の包装用緩衝材８が配置された上の箇所に、物品４の縦方向の稜線３８に沿って配置されている。
【００３７】
次に、包装用緩衝材６，８，１０を配置した物品４を上部開口から段ボール箱２内に収容し、蓋をすることで包装作業が完了する。このとき、段ボール箱２の内面と物品４の外面の間には、包装用緩衝材６，８，１０が配置された状態となる。
【００３８】
このような物品の包装構造に何らかの衝撃が加わった場合について説明する。物品４に大きな衝撃が加わるケースとしては、例えば物品４の入った段ボール箱２を搬送時に落下させてしまったような場合等が想定される。この場合、外側にある段ボール箱２がまず地面に衝突して、最初に外力を受ける。そして、包装用緩衝材６，８，１０は依然として下降する物品４に外力を伝えようとするが、このとき包装用緩衝材６，８，１０は変形する。即ち、断面真円形状の紙パイプ１４がやや潰れて断面楕円形状になることで、段ボール箱２と物品４との間の相対距離が少し縮まるように変形する。そしてこの変形によって、外力による衝撃が緩衝されるようになっている。段ボール箱２に作用した外力が包装用緩衝材６，８，１０によって広面積に分散されると把握することもできる。なお、段ボール箱２が落下する場合について説明したが、異物が段ボール箱２に衝突してきたような場合でも、基本的には同様のことが言える。
【００３９】
次に、第１実施例によって得られる作用効果を列挙する。
本実施例では、図１と、より詳細には図２と図３に示すように、紙製シート材１２，３２と、紙製シート材１２，３２に取付けられた複数の紙パイプ１４を備えた包装用緩衝材６，８を用いている。
この包装用緩衝材６，８は、シート材１２，３２とパイプ１４の両方が紙製である。よって、従来の合成樹脂からなる包装用緩衝材に比べて、リサイクル性が格段に高い。
この包装用緩衝材６，８は、紙製シート材１２，３２に複数の紙パイプ１４が取付けられて構成されているので、複数の紙パイプ１４は相対的な位置関係が保持されている。このため、第１の従来技術のような独立した紙パイプを用いた場合に比べて、段ボール箱２の搬送等で外力が加わっても、紙パイプ１４の位置ずれが生じて衝撃緩衝性が低下する可能性が格段に低い。
しかも、段ボール箱２の搬送等で生じる衝撃は紙パイプ１４のみならず紙製シート材１２，３２にも分散する。よって、紙パイプ１４のみを用いた場合に比べて、衝撃緩衝性が向上するというメリットもある。
また、複数の紙パイプ１４が取付けられた状態の紙製シート材１２，３２を段ボール箱２と物品４の間に配置すればよいので、段ボール箱２と物品４の間に紙パイプ１４を１つずつ配置する場合に比べて、配置作業が容易である。
さらに、包装用緩衝材６，８は紙製シート材１２，３２に複数の紙パイプ１４を取付ければ製造できるので、第２の従来技術である複雑な形状の包装用緩衝材に比べて、格段に容易に製造できる。
【００４０】
紙パイプ１４が紙製シート材１２，３２の一方の面のみに取付けられている。この構成によると、紙製シート材１２，３２を紙パイプ非取付面側１２ｂ，３２ｂに折曲げるときに、紙パイプ１４が邪魔にならないので、紙製シート材１２，３２を折曲げやすい。よって、取扱性が向上する。
紙製シート材１２，３２の紙パイプ非取付面１２ｂ，３２ｂが物品４に面接触している。この構造によると、物品４と包装用緩衝材６，８の良好な密着性を実現できる。このため、外力が加わることで紙パイプ１４の位置ずれが生じて衝撃緩衝性が低下する可能性をより低くできる。
【００４１】
紙製シート材１２，３２は折り目１６を有する。また、紙パイプ１４が紙製シート材１２，３２の折り目１６の山側がある面のみに取付けられている。この構成によると、使用時には折り目１６に沿って谷側に折曲げることで、紙製シート材１２，３２を簡単に所望の立体形状に成形できる。一方、不使用時には紙製シート材１２，３２を展開して図２（ｂ）や図３（ｂ）に示すように平面化できるので、かさ張りにくく、保管スペースを小さくできる。よって、取扱性が向上する。ここでいう「不使用時」には、包装に使用する前の時点のみならず、使用した後の時点も含まれている。
【００４２】
紙パイプ１４が折り目１６を介して配置された複数のパイプ取付領域１８，２０，２２，３４，３６に貼付けられている。この構成によると、物品４の複数の面にかかる衝撃を１つの包装用緩衝材６，８によって緩衝できる。即ち、衝撃緩衝性を向上できる。
各パイプ取付領域１８，２０，２２，３４，３６に、複数の紙パイプ１４が互いに平行でかつ密着した状態で取付けられている。この構成によると、衝撃緩衝性を向上できる。
【００４３】
紙製シート材１２，３２の折り目１６の山側近傍に、折り目１６に沿って紙パイプ１４が取付けられている。そして、その紙製シート材１２，３２の紙パイプ非取付面１２ｂ，３２ｂが物品４に面接触しており、紙製シート材１２，３２の折り目１６が物品４の稜線３８に沿っている。この構造によると、損傷や変形の発生し易い物品４の稜線３８の部位にかかる衝撃を緩衝できる。即ち、衝撃緩衝性を向上できる。
【００４４】
物品４の高さ方向に沿って延びる紙パイプ１４のうち、第１のパイプ取付領域１８にあるもの３つは、物品４の上面又は下面から突出している。この構成によると、物品４の上面又は下面から突出した紙パイプ１４によって、物品４の上面又は下面を形成する稜線３８の部位が保護された状態となる。よって、損傷や変形の発生し易い物品４の稜線３８の部位にかかる衝撃を緩衝できる。即ち、衝撃緩衝性を向上できる。
【００４５】
（第２実施例）図４と図５に、第２実施例の包装用緩衝材とそれを用いた物品の包装構造を説明するための斜視図を示す。図４は包装前の状態を示し、図５は包装時の状態を示す。
段ボール箱２と物品４との隙間には、紙製の包装用緩衝材４２，４４，４６が配置される。以下、これらの包装用緩衝材４２，４４，４６の構造について説明する。図４に、紙パイプ１４の周壁に切欠き部４８を有した構造の中央部保護用の包装用緩衝材４２を示す。本実施例では、全部で４本の中央部保護用の包装用緩衝材４２ａ〜４２ｄが用いられている。紙パイプ１４は第１実施例で示したものと同じく積層構造となっている。紙パイプ１４からなる包装用緩衝材４２は、段ボール箱２の内壁面に接着剤で貼付けられており、段ボール箱２と一体化している。
【００４６】
個々の包装用緩衝材４２ａ〜４２ｄには、折曲げ用の切欠き部４８が４箇所に設けられるとともに、係合接続用の切欠き部５０が２箇所に設けられている。直交して配置された包装用緩衝材４２同士（例えば４２ｂと４２ｃ）は、係合接続用の切欠き部５０を係合させることで、段ボール箱２の底部で互いに接続されている。折曲げ用の切欠き部４８は、図６によく示されるように、パイプ周方向反対側に連続部５２を残しつつパイプ周長の半分以上にわたって略Ｖ字状に切欠きを入れることで形成されている。連続部５２は段ボール箱２の内壁面に接するように配置されている。一方、折曲げ用の切欠き部４８は物品４に接するように配置されている。
【００４７】
隅部保護用の包装用緩衝材４４は、図５に示すように切欠き部４８，５０を有しない紙パイプからなる。本実施例では包装用緩衝材４４は、段ボール箱２と別体で構成されており、その長さは段ボール箱２の高さと同程度である。また図５に示すように、上面保護用の包装用緩衝材４６は、１箇所に係合接続用の切欠き部５０を有する紙パイプからなる。本実施例ではこの包装用緩衝材４６も、段ボール箱２と別体で構成されている。
【００４８】
次に、これらの包装用緩衝材４２，４４，４６の使用方法について説明する。図５に示す使用時において物品４をセットすると、包装用緩衝材４２を構成する紙パイプ１４における切欠き部４８の箇所が、物品４の稜線３８近傍に配置される。そこで、図６に示すように、各々の紙パイプ１４を切欠き部４８の箇所で９０度折曲げ、包装用緩衝材４２を物品４の上面に接触させる。また、上面保護用の２本の包装用緩衝材４６を組合わせ、物品４の上面中央部に載置しておく。
【００４９】
さらに、図７に示すように伸縮性を有する接続部材５４を用いて、中央部保護用の包装用緩衝材４２同士を接続する。また、中央部保護用の包装用緩衝材４２と上面保護用の包装用緩衝材４６を接続する。具体的には、一方の包装用緩衝材（紙パイプ）４２の空洞部に接続部材５４の一端を嵌め込み、他方の包装用緩衝材（紙パイプ）４２の空洞部にその接続部材５４の他端を嵌め込むことで互いに接続している。中央部保護用の包装用緩衝材４２と上面保護用の包装用緩衝材４６の接続も同様である。接続部材５４としては例えばポリウレタン等からなるネットを用いることができる。この接続部材５４は図７に示すように、係止突片５６に引っ掛けることで抜けを強固に防止している。そして、物品４の四隅に隅部保護用の包装用緩衝材４４を配置し、蓋をすることで包装作業が完了する。この結果、段ボール箱２の内面と物品４の外面の間には、包装用緩衝材４２，４４，４６が配置された状態となる。
【００５０】
次に、第２実施例によって得られる作用効果を列挙する。
本実施例の包装用緩衝材４２は、図４〜図６に示すように、切欠き部４８が形成された紙パイプ１４からなる。そして、紙パイプ１４の切欠き部４８が物品４の稜線３８の近傍に配置され、その紙パイプ１４が切欠き部４８の箇所で折曲げられている。
この包装用緩衝材４２は、パイプ１４が紙製である。よって、従来の合成樹脂からなる包装用緩衝材に比べて、リサイクル性が格段に高い。
この包装用緩衝材４２は、使用時にはこの紙パイプ１４の切欠き部４８を物品４の稜線３８の近傍に配置し、この紙パイプ１４を切欠き部４８の箇所で折曲げることで、物品４に対し紙パイプ１４が位置ずれしにくくなる。このため、第１の従来技術のような独立した紙パイプを用いた場合に比べて、段ボール箱２の搬送等で外力が加わっても、紙パイプ１４の位置ずれが生じて衝撃緩衝性が低下する可能性を低くできる。
また、切欠き部４８の箇所で紙パイプ１４を折曲げることで、簡単に所望の立体形状に成形できる。また、物品４に接触させることができる。このため、物品４と段ボール箱２の間に包装用緩衝材４２を配置する作業を容易に行える。一方、不使用時には紙パイプ１４を伸ばして直線状にできるので、かさ張りにくく、保管スペースを小さくできる。よって、取扱性が優れている。
しかも、紙パイプ１４には切欠き部４８が形成されているので、折曲げる際には、無理に折曲げなくてもよい。よって、無理な折曲げに起因する紙パイプ１４の潰れを防止できる。このため、衝撃緩衝性、耐圧強度・耐変形強度が優れている。
また、本実施例の包装用緩衝材４２は単純な形状の紙パイプ１４を用いて製造できるので、第２の従来技術である複雑な形状の紙製の包装用緩衝材に比べて、格段に容易に製造できる。包装用緩衝材４４，４６も同様である。
【００５１】
図６によく示されるように、切欠き部４８は、連続部５２を残しつつパイプ周長の半分以上にわたって形成されている。この構成によると、紙パイプ１４をより折曲げ易くできる。また、紙パイプ１４の潰れを伴うことなく大きな角度で折曲げることができる。このため、包装用緩衝材４２を配置する作業がより容易となる。
【００５２】
図４と図５に示す包装容器２は段ボール箱であり、紙製である。紙パイプ１４が段ボール箱２の内壁面に取付けられている。この構造によると、包装容器２とパイプ１４が共に紙製であるため、リサイクル性が高い。また、紙パイプ１４が段ボール箱２の内壁面に取付けられているため、包装に必要な部材の点数を減少でき、取扱性が向上する。さらに、紙パイプ１４は既に段ボール箱２の内壁面に取付けられており、後は紙パイプ１４を折曲げればよいので、配置作業がより容易となる。
【００５３】
図５に示すように、紙パイプ１４同士（包装用緩衝材４２同士）が互いに接続されている。この構成によると、紙パイプ１４の位置ずれをより生じにくくすることができる。しかも、紙パイプ１４同士が接続されるので、物品４のがたつきも生じにくくすることができる。このため、紙パイプ１４の位置ずれが生じて衝撃緩衝性が低下する可能性をより低くできる。
【００５４】
より具体的には、紙パイプ１４同士（包装用緩衝材４２同士）は、一方の紙パイプ１４の空洞部に接続部材５４の一端が嵌め込まれ、他方の紙パイプ１４の空洞部にその接続部材５４の他端が嵌め込まれることで互いに接続されている。この構造によると、紙パイプ１４の空洞部を利用した比較的簡単な構成で紙パイプ１４同士を強固に接続できる。また、紙パイプ１４同士（包装用緩衝材４２同士）は、切欠き部５０同士が係合することで互いに接続されているものもある。この構造によると、接続部材５４等を使用せずに紙パイプ１４同士を連結できる。
【００５５】
以上、本発明の具体例を詳細に説明したが、これらは例示に過ぎず、特許請求の範囲を限定するものではない。特許請求の範囲に記載の技術には、以上に例示した具体例を様々に変形、変更したものが含まれる。
（１）紙パイプ１４の断面は略円形状でなくてもよい。例えば六角形等の多角形状であってもよい。
（２）紙製シート材の両面に紙パイプが取付けられていてもよい。
（３）図８に示す包装用緩衝材６２のような構成にしてもよい。この構成によると、包装に必要な部材の点数をさらに減らすことができる。よって、取扱性がさらに向上する。
（４）紙製シート材１２，３２の材料は段ボールに限定されることはなく、それ以外の種類の紙を用いても勿論よい。
（５）物品の形状は第１及び第２実施例のような平型の直方体に限定されず、例えば円柱や角柱等であっても構わない。
（６）折り目１６が予め形成されていない紙製シート材１２，３２を用いて包装用緩衝材６，８を構成し、使用時に紙製シート材１２，３２を所定箇所で折曲げるようにしてもよい。
（７）第１実施例で、各パイプ取付領域１８，２０，２２，３４，３６に複数の紙パイプ１４を設ける場合、各紙パイプ１４を互いに密着させずに貼付けてもよい。
（８）第２実施例で、紙パイプ１４の端部同士を接続する伸縮性の合成樹脂製の接続部材５４に代えて、紙製の接続部材を用いてもよい。この構成によると、包装用緩衝材４２，４４，４６と接続部材がともに紙製となるため、リサイクル性をより向上できる。
（９）第２実施例で、紙パイプ１４からなる包装用緩衝材４２は、段ボール箱２の内壁面に一体的に設けられていなくてもよく、別体で形成されていてもよい。
【００５６】
本明細書又は図面に説明した技術要素は、単独であるいは各種の組合せによって技術的有用性を発揮するものであり、出願時請求項記載の組合せに限定されるものではない。また、本明細書又は図面に例示した技術は複数目的を同時に達成し得るものであり、そのうちの一つの目的を達成すること自体で技術的有用性を持つものである。
【図面の簡単な説明】
【図１】第１実施例の包装用緩衝材とそれを用いた物品の包装構造を説明するための斜視図を示す。
【図２】（ａ）は第１実施例の隅部保護用の包装用緩衝材の構成部材である紙製シート材の正面図、（ｂ）は紙製シート材に複数の紙パイプを貼付けてなる隅部保護用の包装用緩衝材の正面図、（ｃ）は前記包装用緩衝材の平面図を示す。
【図３】（ａ）は第１実施例の中央部保護用の包装用緩衝材の構成部材である紙製シート材の正面図、（ｂ）は紙製シート材に複数の紙パイプを貼付けてなる中央部保護用の包装用緩衝材の正面図、（ｃ）は前記包装用緩衝材の平面図を示す。
【図４】第２実施例の包装用緩衝材とそれを用いた包装構造（包装前）を説明するための斜視図を示す。
【図５】第２実施例の包装用緩衝材とそれを用いた包装構造（包装時）を説明するための斜視図を示す。
【図６】周壁に切欠き部を有する第２実施例の包装用緩衝材の要部拡大図を示す。
【図７】紙パイプの端部同士が接続部材を用いて互いに連結されている第２実施例の包装用緩衝材の要部拡大断面図を示す。
【図８】別の実施例の包装用緩衝材の斜視図を示す。
【符号の説明】
２：段ボール箱（包装容器）
４：物品
６，８，１０，４２，４４，４６：包装用緩衝材
１２，３２：紙製シート材
１２ａ：紙パイプ取付面
１２ｂ：紙パイプ非取付面
１４：紙パイプ
１６：折り目
１８，２０，２２，３４，３６：パイプ取付領域
３８：稜線
４８：切欠き部
５２：連続部
５４：接続部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cushioning material for packaging which is disposed between a packaging container and an article accommodated in the packaging container and cushions an impact applied to the article during transportation, etc., and packaging of the article using the packaging cushioning material Concerning structure.
[0002]
[Prior art]
When various articles are stored in the packaging container, if the gap between the packaging container and the article is large, the article may rattle during transportation or the like, and the article may be damaged or deformed. Therefore, in order to suppress the occurrence of damage and deformation of the article, a packaging cushioning material is disposed in the gap between the packaging container and the article.
Conventionally, as this type of cushioning material for packaging, most molded products and cut-out products made of synthetic resin such as polystyrene foam have been used. Recently, however, the demand for recycling of packaging cushioning materials is increasing. Therefore, synthetic resins such as polystyrene foam having low recyclability tend to be avoided. Accordingly, paper packaging cushioning materials are attracting attention.
As a first prior art, Japanese Utility Model Publication No. 6-65270 discloses a cushioning material for packaging made of a paper pipe having a hollow portion.
As a second prior art, Japanese Utility Model Laid-Open No. 7-40539 discloses a paper packaging cushion having a complicated shape in which an insertion hole for an article and a support portion for the article are formed.
[0003]
[Problems to be solved by the invention]
However, even when an independent paper pipe as in the first prior art is placed in a desired state between the packaging container and the article as it is, when some external force acts on the packaging container due to transportation of the packaging container, etc. In addition, there is a high possibility that the shock buffering performance is lowered due to the displacement of the paper pipe. Moreover, the operation | work which arrange | positions the independent paper pipe one by one in a desired position like the 1st prior art is troublesome. The first prior art publication almost discloses a specific configuration of a cushioning material for packaging using a paper pipe and a packaging structure of an article on how to arrange the cushioning material for packaging. Not.
On the other hand, according to the second conventional cushioning material for packaging, it is unlikely that the position of the cushioning material will cause a shock buffering effect, but in order to produce such a complex cushioning material for packaging. It was necessary to go through an advanced or complicated manufacturing process.
[0004]
From the above background, the present inventors tried to realize a packaging cushioning material that satisfies the following three conditions or a packaging structure for an article using the packaging cushioning material.
(1) The packaging cushioning material is more recyclable than the packaging cushioning material made of a synthetic resin such as polystyrene foam.
(2) Compared to the case where an independent paper pipe as in the first prior art is used as it is, the shock buffering property is not easily lowered even when an external force is applied.
(3) It can be easily manufactured as compared with the cushioning material having a complicated shape as in the second prior art.
[0005]
The present inventors also attempted to realize a packaging cushioning material or packaging structure for an article that satisfies any of the following conditions.
(4) The placement work of the cushioning material for packaging is easier than the work of placing the individual paper pipes one by one at the desired position as in the first prior art.
(5) To improve at least one general characteristic of the cushioning material for packaging. For example, to improve impact buffering, handling, weather resistance / moisture resistance, pressure strength / deformation strength, etc. Desirably, a characteristic equivalent to or close to that of a conventional polystyrene foam product should be realized.
The present invention has been made as a result of the above-described attempts by the present inventors.
[0006]
Means, Action and Effect for Solving the Problems The packaging cushioning material of one aspect of the present invention is a packaging cushioning material disposed between the packaging container and the article. The cushioning material for packaging includes a paper sheet material and a plurality of paper pipes attached to at least one surface of the paper sheet material.The
[0007]
In this cushioning material for packaging, both the sheet material and the pipe are made of paper. Therefore, recyclability is remarkably high as compared with a conventional cushioning material made of synthetic resin.
This cushioning material for packaging is configured by attaching a plurality of paper pipes to a paper sheet material. Therefore, the relative positional relationship is maintained among the plurality of paper pipes. For this reason, compared with the case where an independent paper pipe as in the first prior art is used, even if an external force is applied during conveyance of the packaging container, the paper pipe is displaced and impact shock-absorbing property can be reduced. Sexually low.
In addition, the impact caused by transporting the packaging container is dispersed not only in the paper pipe but also in the paper sheet material. Therefore, there is a merit that the shock absorbing property is improved as compared with the case where only the paper pipe is used.
In addition, since the paper sheet material with a plurality of paper pipes attached may be disposed between the packaging container and the article, compared to the case where one paper pipe is disposed between the packaging container and the article, Placement work is easy.
Furthermore, since the packaging cushioning material according to the present invention can be manufactured by attaching a plurality of paper pipes to a paper sheet material, it is much easier than the complex packaging packaging material of the second prior art. Can be manufactured.
[0008]
Note that FIG. 4 of the first prior art publication discloses a packaging cushioning material formed by connecting a plurality of paper pipes into a sheet shape. However, this cushioning material for packaging is one in which paper pipes are connected to each other. Therefore, when manufacturing integrally, an advanced manufacturing process is required. Alternatively, when the paper pipes are connected one by one by bonding or the like, it is necessary to connect the paper pipes one by one by applying an adhesive, and the manufacturing process becomes complicated. On the other hand, the cushioning material for packaging according to the present invention can be manufactured, for example, by applying an adhesive to a paper sheet material at a time and attaching a plurality of paper pipes continuously to the paper sheet. For this reason, the manufacturing process is simple. In these respects, the packaging cushioning material according to the present invention is greatly different from the sheet-like packaging cushioning material of FIG. 4 of the first prior art.
[0009]
  It is preferred that the paper pipe is attached to only one side of the paper sheet material.Yes.
  According to this configuration, when the paper sheet material is folded toward the paper pipe non-mounting surface side, the paper pipe does not get in the way, so the paper sheet material can be easily folded. Therefore, the handleability is improved.
  In this case, it is preferable that the non-mounting surface of the paper sheet material is in surface contact with the article.Yes.
  Thus, according to the structure in which the cushioning material for packaging is arranged, good adhesion between the article and the cushioning material for packaging can be realized. For this reason, the possibility that the displacement of the paper pipe occurs due to the external force and the shock buffering property is lowered can be further reduced.
[0010]
  It is preferred that the paper sheet material has a crease and the paper pipe is attached only to the side of the paper sheet material where the crease is located.Yes.
  According to this configuration, the paper sheet material can be easily formed into a desired three-dimensional shape by being bent toward the valley side along the crease at the time of use. On the other hand, since the paper sheet material can be developed and flattened when not in use, it is difficult to bulk up, and the storage space can be reduced. Therefore, the handleability is improved.
[0011]
  It is preferred that the paper pipe is attached to multiple pipe attachment areas arranged via creases.Yes.
  According to this structure, the impact applied to the plurality of surfaces of the article can be buffered by the single cushioning material for packaging. That is, the shock absorbing property can be improved.
[0012]
  It is preferable that a plurality of paper pipes are attached to each pipe attachment area in parallel and in close contact with each other.Yes.
  According to this configuration, the shock absorbing property can be improved.
[0013]
  It is preferable that a paper pipe is attached along the crease in the vicinity of the crest of the paper sheet material.Yes.
  In this case, it is preferable that the paper pipe non-mounting surface of the paper sheet material is in surface contact with the article, and the crease of the paper sheet material is along the ridge line of the article.Yes.
  According to this structure, it is possible to buffer an impact applied to a ridge line portion of an article that is easily damaged or deformed. That is, the shock absorbing property can be improved.
[0014]
  Preferably, at least one of the paper pipes extending along the height direction of the article protrudes from the upper or lower surface of the article.Yes.
  According to this structure, the ridge line part which forms the upper surface or the lower surface of the article is protected by the paper pipe protruding from the upper surface or the lower surface of the article. Therefore, the impact applied to the ridge line portion of the article that is easily damaged or deformed can be buffered. That is, the shock absorbing property can be improved.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
The main features of the embodiments of the present invention to be described later will be described.
(Form 1) A paper pipe has a laminated structure formed by winding and adhering a strip of paper in a spiral manner over a plurality of layers.
According to this configuration, since the paper pipe has a laminated structure, it is difficult for moisture to permeate from the surface, and weather resistance and moisture resistance can be remarkably improved as compared with ordinary cardboard paper. For this reason, according to the packaging cushioning material or the packaging structure of the article using this paper pipe, it is possible to realize shock buffering properties, pressure strength and deformation resistance comparable to those of polystyrene foam products.
(Form 2) In the form 1, the winding direction of the belt-like paper is different every other layer.
According to this configuration, compared to the case where the winding direction is only one direction, the rigidity and elasticity of the paper pipe can be increased even if the number of layers is small. For this reason, it is possible to further improve the impact buffering property, the pressure strength and the deformation strength.
[0023]
【Example】
First Embodiment FIG. 1 is a perspective view for explaining a packaging cushioning material according to a first embodiment and a packaging structure for articles using the packaging cushioning material.
FIG. 1 shows a cardboard box 2 with a lid, which is a kind of paper packaging container. The cardboard box 2 is a flat rectangular parallelepiped. The cardboard box 2 accommodates a flat rectangular parallelepiped article 4 that is slightly smaller than the cardboard box 2. When the article 4 is stored in the cardboard box 2, a gap is generated between the cardboard box 2 and the article 4. For this reason, in this embodiment, paper cushioning materials 6, 8, and 10 are disposed in the gaps. Hereinafter, the structure of these cushioning materials 6, 8 and 10 for packaging will be described.
[0024]
FIGS. 2B and 2C show a packaging cushioning material 6 for corner protection, which is configured by pasting a plurality of paper pipes 14 to a paper sheet material 12. FIG. 2A shows a paper sheet material 12 that is a component of the cushioning material 6 for protecting corners.
The paper sheet material 12 constituting the wrapping cushioning material 6 is formed in a substantially T-shape and has linear folds 16 at three positions. The mountain side of the crease 16 in FIG. 2A is represented by a one-dot chain line. The areas partitioned by the crease 16 are defined as pipe attachment areas 18, 20, and 22. This paper sheet material 12 is formed with a total of four rectangular pipe attachment regions 18, 20, and 22.
[0025]
As shown in FIG. 2 (c), the paper pipe 14 is attached only to the surface of the paper sheet 12 where the crease 16 has a crest side, and is attached to the surface of the crease 16 having a trough side. Not. For convenience of explanation, the surface of the paper sheet material 12 having the crest 16 on the side of the crease 16 is referred to as “paper pipe attachment surface 12a”, and the surface of the crease 16 on the side having the valley side is referred to as “paper pipe non-attachment surface 12b”.
[0026]
As shown in FIGS. 1 and 2, three paper pipes 14 are attached to the first pipe attachment region 18 having the largest area with an adhesive. As shown in FIG. 1, the longitudinal dimension of the first pipe attachment region 18 is designed to be approximately equal to the height of the article 4. The length of each paper pipe 14 affixed to the first pipe attachment region 18 is designed to be slightly longer than the length of the first pipe attachment region 18 in the longitudinal direction and to be approximately the same as the height of the cardboard box 2. Yes. These paper pipes 14 are pasted so as to extend along the longitudinal direction of the first pipe attachment region 18 and so that both ends protrude in the longitudinal direction of the first pipe attachment region 18. The paper pipes 14 are parallel to each other, and the peripheral walls are in close contact over the entire length.
[0027]
Of the three paper pipes 14, the one located at the left end in FIG. 2B is the vicinity of the mountain side of the crease 16 that divides the first pipe attachment region 18 and the second pipe attachment region 20 having the next largest area. And attached along the crease 16.
[0028]
As shown in FIGS. 1 and 2, two paper pipes 14 are attached to the second pipe attachment region 20 with an adhesive. The dimension in the longitudinal direction of the second pipe attachment region 20 is designed to be approximately equal to the height of the article 4. The length of each paper pipe 14 affixed to the 2nd pipe attachment area | region 20 is designed so that it may become substantially equal to the dimension of the longitudinal direction of the 2nd pipe attachment area | region 20. FIG. These paper pipes 14 are affixed so as to extend along the longitudinal direction of the second pipe attachment region 20 and so that both end portions do not protrude from the second pipe attachment region 20. The paper pipes 14 are parallel to each other, and the peripheral walls are in close contact over the entire length.
[0029]
As shown in FIGS. 1 and 2, there are two third pipe attachment regions 22 having the smallest area, and two paper pipes 14 are attached to each of them with an adhesive. The length of each paper pipe 14 affixed to the third pipe attachment region 22 is designed to be approximately equal to the longitudinal dimension of the third pipe attachment region 22. These paper pipes 14 are pasted so as to extend along the longitudinal direction of the third pipe attachment region 22 and so that both end portions do not protrude from the third pipe attachment region 22. The paper pipes 14 are parallel to each other, and the peripheral walls are in close contact over the entire length.
[0030]
Here, the structure of the paper pipe 14 will be described. The paper pipe 14 has a substantially circular cross section. Here, the “substantially circular cross section” includes not only those whose cross section is a perfect circle, but also those whose cross section is not a perfect circle (for example, a cross sectional circle or shape with a part missing). It is a purpose to include. In this embodiment, a circular cross section is used. In addition, the “paper” in this embodiment includes not only pure material made of plant material but also composite material obtained by adding a little metal or organic matter to the plant material. In other words, the material is not limited to a material composed solely of plant material as long as it can be recycled more easily than a synthetic resin material such as polystyrene foam.
[0031]
The paper pipe 14 used in this embodiment has a laminated structure. The paper pipe 14 is formed by winding a belt-like paper in a spiral shape over a plurality of layers and bonding them. The reason why the laminated structure is adopted is that the laminated structure makes it difficult for moisture to permeate from the surface, and the weather resistance and moisture resistance are several times better than ordinary single-layer cardboard paper. Further, the winding direction of the belt-like paper is different every other layer, and right-handed layers and left-handed layers exist alternately. Therefore, the strength of the paper pipe 14 is high even if the number of layers is small, compared to the case where the winding direction is only one direction. In this embodiment, a corrugated cardboard sheet material is used as the paper sheet material 12.
[0032]
3 (b) and 3 (c) show a cushioning material 8 for protecting the central portion formed by pasting a plurality of paper pipes 14 on a paper sheet material 32. FIG. FIG. 3A shows a paper sheet material 32 that is a constituent member of the packaging cushioning material 8 for protecting the central portion.
The paper sheet material 32 constituting the packaging cushioning material 8 is formed in an elongated rectangular shape, and has a linear fold 16 at one location. Also in FIG. 3A, the mountain side of the crease 16 is represented by a one-dot chain line. Two pipe attachment regions 34 and 36 are formed by the fold 16.
[0033]
As shown in FIG. 3C, the paper pipe 14 is attached only to the surface of the paper sheet material 32 having the ridge 16 side, that is, only to the paper pipe attachment surface 32a. Therefore, the paper pipe 14 is not attached to the paper pipe non-attachment surface 32 b of the paper sheet material 32.
Two paper pipes 14 are attached to the first pipe attachment region 34 having a relatively large area with an adhesive. The longitudinal dimension of the first pipe attachment region 34 is designed to be approximately equal to the lateral width of the article 4. The length of each paper pipe 14 affixed there is designed to be approximately the same as the longitudinal dimension of the first pipe attachment region 34. The two paper pipes 14 are attached to the second pipe attachment region 36 having a relatively small area with an adhesive. The longitudinal dimension of the second pipe attachment region 36 is designed to be approximately equal to the height of the article 4. The length of each paper pipe 14 affixed there is designed to be approximately the same as the longitudinal dimension of the second pipe attachment region 36.
[0034]
These paper pipes 14 are affixed so as to extend along the longitudinal direction of the first pipe attachment region 34, and are parallel to each other and in a state where the peripheral walls are in close contact with each other over the entire length. Note that the above-described laminated paper pipe is used as the paper pipe 14. As the paper sheet material 32, the above-mentioned cardboard sheet material is used.
FIG. 1 also shows a wrapping cushioning material 10 for ridgeline protection. The cushioning material 10 for packaging is composed only of the paper pipe 14 and does not include a paper sheet material. The cushioning material 10 for packaging has a length substantially the same as the vertical dimension of the article 4 and is arranged along the ridge line 38 of the article 4. The “ridge line” generally means a line segment of intersection of planes in a polyhedron.
[0035]
Next, how to use these cushioning materials 6, 8, and 10 will be described. In the use shown in FIG. 1, the cushioning material 6 for protecting corners is in a state where the paper sheet material 12 is bent 90 degrees toward the non-pipe mounting surface 12b side along the fold line 16 (see FIG. 2). used. Then, four packaging cushioning materials 6 formed into a predetermined shape by bending are used, and these are arranged so as to cover each corner of the article 4. At that time, the paper pipe non-attaching surface 12 b of the paper sheet material 12 is brought into surface contact with the article 4. When arranged in this way, the fold line 16 extending in the height direction of the article 4 is arranged along the ridge line 38 in the height direction of the article 4. Since one paper pipe 14 is attached in the vicinity of the crease 16, as a result, the paper pipe 14 is disposed along a ridge line 38 extending along the height direction of the article 4. Further, three of the paper pipes 14 extending along the height direction of the article 4 (specifically, three attached to the first pipe attachment region 18) have both ends thereof from the upper surface and the lower surface of the article 4. Protruding state. In the present embodiment, four adjacent surfaces of the article 4 are protected by one packaging cushioning material 6.
[0036]
On the other hand, during use as shown in FIG. 1, the cushioning material 8 for protecting the central portion is formed by bending the paper sheet material 32 by 90 degrees along the fold line 16 (see FIG. 3) toward the paper pipe non-mounting surface 32b. Used in state. At that time, the paper pipe non-attachment surface 32 b of the paper sheet material 32 is brought into surface contact with the article 4. In the present embodiment, two adjacent surfaces (side surface and upper surface) of the article 4 are protected by a single cushioning material 8 for packaging. If the other cushioning material 8 for packaging is used, the side surface and the lower surface of the article 4 can be protected.
In the use shown in FIG. 1, the packaging cushioning material 10 for protecting the ridgeline is arranged along the longitudinal ridgeline 38 of the article 4 in the upper portion where the packaging cushioning material 8 for protecting the central portion is arranged. ing.
[0037]
Next, the article 4 on which the cushioning materials 6, 8, and 10 for packaging are placed is accommodated in the cardboard box 2 from the upper opening, and the packaging operation is completed by closing the lid. At this time, the packaging cushioning materials 6, 8, and 10 are disposed between the inner surface of the cardboard box 2 and the outer surface of the article 4.
[0038]
A case where an impact is applied to the packaging structure of such an article will be described. As a case where a large impact is applied to the article 4, for example, a case where the cardboard box 2 containing the article 4 is dropped at the time of transportation is assumed. In this case, the outer corrugated cardboard box 2 first collides with the ground and receives an external force first. The packaging cushioning materials 6, 8, and 10 still try to transmit an external force to the descending article 4, but at this time, the packaging cushioning materials 6, 8, and 10 are deformed. That is, the paper pipe 14 having a perfectly circular cross section is slightly crushed into an elliptical cross section, so that the relative distance between the cardboard box 2 and the article 4 is slightly reduced. Due to this deformation, an impact caused by an external force is buffered. It can also be understood that the external force acting on the cardboard box 2 is dispersed over a wide area by the cushioning materials 6, 8 and 10 for packaging. In addition, although the case where the cardboard box 2 falls was demonstrated, even when a foreign material has collided with the cardboard box 2, the same thing can be said fundamentally.
[0039]
Next, effects obtained by the first embodiment will be listed.
In this embodiment, as shown in FIG. 1 and more specifically in FIG. 2 and FIG. 3, a paper sheet material 12, 32 and a plurality of paper pipes 14 attached to the paper sheet material 12, 32 are provided. The packaging cushioning materials 6 and 8 are used.
In the cushioning materials 6 and 8 for packaging, both the sheet materials 12 and 32 and the pipe 14 are made of paper. Therefore, recyclability is remarkably high as compared with a conventional cushioning material made of synthetic resin.
Since the cushioning materials 6 and 8 for packaging are configured by attaching a plurality of paper pipes 14 to the paper sheet materials 12 and 32, the relative positions of the plurality of paper pipes 14 are maintained. For this reason, as compared with the case of using an independent paper pipe as in the first prior art, even if an external force is applied during conveyance of the cardboard box 2 or the like, the paper pipe 14 is displaced and the shock buffering performance is reduced. The possibility of doing is much lower.
Moreover, the impact caused by the conveyance of the cardboard box 2 is dispersed not only in the paper pipe 14 but also in the paper sheet materials 12 and 32. Therefore, there is an advantage that the impact buffering property is improved as compared with the case where only the paper pipe 14 is used.
In addition, since the paper sheet materials 12 and 32 with a plurality of paper pipes 14 attached thereto may be disposed between the cardboard box 2 and the article 4, the paper pipe 14 is placed between the cardboard box 2 and the article 4. Arrangement work is easier than arranging them one by one.
Furthermore, since the packaging cushioning materials 6 and 8 can be manufactured by attaching a plurality of paper pipes 14 to the paper sheet materials 12 and 32, compared with the packaging cushioning material having a complicated shape which is the second prior art, It can be manufactured much more easily.
[0040]
A paper pipe 14 is attached to only one surface of the paper sheet material 12, 32. According to this configuration, when the paper sheet materials 12 and 32 are bent to the paper pipe non-attaching surface sides 12b and 32b, the paper pipe 14 does not get in the way, so that the paper sheet materials 12 and 32 are easily bent. Therefore, the handleability is improved.
The paper pipe non-attaching surfaces 12 b and 32 b of the paper sheet materials 12 and 32 are in surface contact with the article 4. According to this structure, good adhesion between the article 4 and the cushioning materials 6 and 8 for packaging can be realized. For this reason, it is possible to further reduce the possibility that the impact buffering performance is lowered due to the displacement of the paper pipe 14 due to the external force.
[0041]
The paper sheet materials 12 and 32 have creases 16. Further, the paper pipe 14 is attached only to the surface where the crease 16 of the paper sheet material 12, 32 is located. According to this configuration, the paper sheet materials 12 and 32 can be easily formed into a desired three-dimensional shape by being bent toward the valley side along the crease 16 at the time of use. On the other hand, when not in use, the paper sheet materials 12 and 32 can be unfolded and flattened as shown in FIGS. 2B and 3B, so that it is difficult to bulk up and the storage space can be reduced. Therefore, the handleability is improved. Here, “when not in use” includes not only the time before use for packaging but also the time after use.
[0042]
The paper pipe 14 is affixed to a plurality of pipe mounting areas 18, 20, 22, 34, 36 arranged via the fold line 16. According to this configuration, the impact applied to the plurality of surfaces of the article 4 can be buffered by the single cushioning material 6 and 8 for packaging. That is, the shock absorbing property can be improved.
A plurality of paper pipes 14 are attached to the pipe attachment regions 18, 20, 22, 34, and 36 in a state of being in parallel and in close contact with each other. According to this configuration, the shock absorbing property can be improved.
[0043]
A paper pipe 14 is attached along the crease 16 in the vicinity of the mountain side of the crease 16 of the paper sheet materials 12 and 32. The paper pipe non-attachment surfaces 12 b and 32 b of the paper sheet materials 12 and 32 are in surface contact with the article 4, and the crease 16 of the paper sheet materials 12 and 32 is along the ridge line 38 of the article 4. According to this structure, the impact applied to the portion of the ridgeline 38 of the article 4 that is easily damaged or deformed can be buffered. That is, the shock absorbing property can be improved.
[0044]
Among the paper pipes 14 extending along the height direction of the article 4, three of the paper pipes 14 in the first pipe attachment region 18 protrude from the upper surface or the lower surface of the article 4. According to this configuration, the portion of the ridge line 38 that forms the upper surface or the lower surface of the article 4 is protected by the paper pipe 14 protruding from the upper surface or the lower surface of the article 4. Therefore, it is possible to buffer an impact applied to the portion of the ridgeline 38 of the article 4 that is easily damaged or deformed. That is, the shock absorbing property can be improved.
[0045]
Second Embodiment FIGS. 4 and 5 are perspective views for explaining a packaging cushioning material of a second embodiment and a packaging structure of an article using the same. FIG. 4 shows a state before packaging, and FIG. 5 shows a state at the time of packaging.
In the gap between the cardboard box 2 and the article 4, paper packaging cushioning materials 42, 44, 46 are arranged. Hereinafter, the structure of these cushioning materials 42, 44, 46 for packaging will be described. FIG. 4 shows a packaging cushioning material 42 for protecting the central portion having a structure having a notch 48 in the peripheral wall of the paper pipe 14. In this embodiment, a total of four cushioning materials 42a to 42d for protecting the central portion are used. The paper pipe 14 has a laminated structure similar to that shown in the first embodiment. The cushioning material 42 for packaging made of the paper pipe 14 is attached to the inner wall surface of the cardboard box 2 with an adhesive, and is integrated with the cardboard box 2.
[0046]
Each of the packaging cushioning materials 42a to 42d is provided with four cutout portions 48 for bending and two cutout portions 50 for engagement connection. The cushioning materials 42 for packaging (for example, 42b and 42c) arranged orthogonally are mutually connected by the bottom part of the cardboard box 2 by engaging the notch part 50 for engagement connection. As shown in FIG. 6, the notch 48 for bending is formed by making a notch in a substantially V shape over more than half of the pipe circumference while leaving the continuous part 52 on the opposite side in the pipe circumferential direction. Has been. The continuous portion 52 is disposed so as to contact the inner wall surface of the cardboard box 2. On the other hand, the notch 48 for bending is disposed so as to contact the article 4.
[0047]
As shown in FIG. 5, the cushioning material 44 for corner protection is made of a paper pipe that does not have the notches 48 and 50. In this embodiment, the packaging cushioning material 44 is formed separately from the cardboard box 2, and the length thereof is approximately the same as the height of the cardboard box 2. As shown in FIG. 5, the packaging cushioning material 46 for protecting the upper surface is formed of a paper pipe having a notch portion 50 for engagement connection at one place. In the present embodiment, the packaging cushioning material 46 is also formed separately from the cardboard box 2.
[0048]
Next, how to use these cushioning materials 42, 44, and 46 will be described. When the article 4 is set at the time of use shown in FIG. 5, the portion of the notch 48 in the paper pipe 14 constituting the packaging cushioning material 42 is arranged in the vicinity of the ridge line 38 of the article 4. Therefore, as shown in FIG. 6, each paper pipe 14 is bent 90 degrees at the position of the notch 48, and the cushioning material 42 for packaging is brought into contact with the upper surface of the article 4. Further, two packaging cushioning materials 46 for protecting the upper surface are combined and placed on the center of the upper surface of the article 4.
[0049]
Further, as shown in FIG. 7, the cushioning material 42 for protecting the central portion is connected to each other by using a connecting member 54 having elasticity. Further, the packaging cushioning material 42 for protecting the central portion and the packaging cushioning material 46 for protecting the upper surface are connected. Specifically, one end of the connection member 54 is fitted into the cavity of one packaging cushioning material (paper pipe) 42, and the other end of the connection member 54 is inserted into the cavity of the other packaging cushioning material (paper pipe) 42. Are connected to each other by fitting. The connection of the packaging cushioning material 42 for protecting the central portion and the packaging cushioning material 46 for protecting the upper surface is the same. As the connection member 54, for example, a net made of polyurethane or the like can be used. As shown in FIG. 7, the connecting member 54 is firmly prevented from coming off by being hooked on the locking projection piece 56. And the packaging buffer material 44 for corner protection is arrange | positioned in the four corners of the articles | goods 4, and a packaging operation is completed by covering. As a result, the packaging cushioning materials 42, 44, 46 are arranged between the inner surface of the cardboard box 2 and the outer surface of the article 4.
[0050]
Next, effects obtained by the second embodiment will be listed.
As shown in FIGS. 4 to 6, the cushioning material 42 for packaging according to the present embodiment includes a paper pipe 14 in which a notch 48 is formed. The notch 48 of the paper pipe 14 is disposed in the vicinity of the ridge line 38 of the article 4, and the paper pipe 14 is bent at the notch 48.
In the packaging cushioning material 42, the pipe 14 is made of paper. Therefore, recyclability is remarkably high as compared with a conventional cushioning material made of synthetic resin.
When the cushioning material for packaging 42 is used, the cutout portion 48 of the paper pipe 14 is disposed in the vicinity of the ridge line 38 of the article 4, and the paper pipe 14 is bent at the position of the cutout portion 48, whereby the article 4 In contrast, the paper pipe 14 is less likely to be displaced. For this reason, as compared with the case of using an independent paper pipe as in the first prior art, even if an external force is applied during conveyance of the cardboard box 2 or the like, the paper pipe 14 is displaced and the shock buffering performance is reduced. The possibility of doing it can be lowered.
Also, by bending the paper pipe 14 at the notch 48, it can be easily formed into a desired three-dimensional shape. Further, it can be brought into contact with the article 4. For this reason, the operation | work which arrange | positions the cushioning material 42 for packaging between the articles | goods 4 and the cardboard box 2 can be performed easily. On the other hand, since the paper pipe 14 can be extended and straightened when not in use, it is difficult to be bulky and the storage space can be reduced. Therefore, the handleability is excellent.
In addition, since the notch 48 is formed in the paper pipe 14, it is not necessary to bend it forcibly when it is folded. Therefore, it is possible to prevent the paper pipe 14 from being crushed due to excessive bending. For this reason, it has excellent impact buffering properties, pressure strength, and deformation strength.
In addition, since the packaging cushioning material 42 of the present embodiment can be manufactured by using a simple-shaped paper pipe 14, it is markedly different from the complicated packaging paper packaging cushioning material of the second prior art. Easy to manufacture. The same applies to the cushioning materials 44 and 46 for packaging.
[0051]
As well shown in FIG. 6, the notch 48 is formed over half or more of the pipe circumference while leaving the continuous portion 52. According to this configuration, the paper pipe 14 can be more easily bent. Further, the paper pipe 14 can be bent at a large angle without being crushed. For this reason, the operation | work which arrange | positions the buffer material 42 for packaging becomes easier.
[0052]
The packaging container 2 shown in FIGS. 4 and 5 is a cardboard box and is made of paper. A paper pipe 14 is attached to the inner wall surface of the cardboard box 2. According to this structure, since the packaging container 2 and the pipe 14 are both made of paper, the recyclability is high. Moreover, since the paper pipe 14 is attached to the inner wall surface of the cardboard box 2, the number of members required for packaging can be reduced, and the handleability is improved. Furthermore, the paper pipe 14 is already attached to the inner wall surface of the cardboard box 2, and after that, the paper pipe 14 has only to be bent, so that the arrangement work becomes easier.
[0053]
As shown in FIG. 5, the paper pipes 14 (packaging cushioning materials 42) are connected to each other. According to this configuration, it is possible to make the positional deviation of the paper pipe 14 less likely to occur. Moreover, since the paper pipes 14 are connected to each other, rattling of the article 4 can be made difficult to occur. For this reason, it is possible to further reduce the possibility that the position of the paper pipe 14 is shifted and the impact buffering performance is lowered.
[0054]
More specifically, between the paper pipes 14 (packaging buffer materials 42), one end of the connection member 54 is fitted in the cavity of one paper pipe 14, and the connection member is inserted in the cavity of the other paper pipe 14. The other end of 54 is inserted and connected to each other. According to this structure, the paper pipes 14 can be firmly connected to each other with a relatively simple configuration using the hollow portion of the paper pipes 14. In addition, the paper pipes 14 (packaging cushioning materials 42) may be connected to each other by engaging the notch portions 50 with each other. According to this structure, the paper pipes 14 can be connected without using the connection member 54 or the like.
[0055]
Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.
(1) The cross section of the paper pipe 14 may not be substantially circular. For example, it may be a polygonal shape such as a hexagon.
(2) Paper pipes may be attached to both sides of the paper sheet material.
(3) The packaging cushioning material 62 shown in FIG. According to this structure, the number of members required for packaging can be further reduced. Therefore, the handleability is further improved.
(4) The material of the paper sheet materials 12 and 32 is not limited to corrugated cardboard, and other types of paper may of course be used.
(5) The shape of the article is not limited to the flat rectangular parallelepiped as in the first and second embodiments, and may be, for example, a cylinder or a prism.
(6) The cushioning materials 6 and 8 for packaging are formed using the paper sheet materials 12 and 32 on which the folds 16 are not formed in advance, and the paper sheet materials 12 and 32 are bent at predetermined positions during use. Also good.
(7) In the first embodiment, when a plurality of paper pipes 14 are provided in each of the pipe attachment regions 18, 20, 22, 34, 36, the paper pipes 14 may be attached without being in close contact with each other.
(8) In the second embodiment, instead of the elastic synthetic resin connection member 54 that connects the ends of the paper pipe 14, a paper connection member may be used. According to this configuration, since the packaging cushioning materials 42, 44, 46 and the connection member are all made of paper, the recyclability can be further improved.
(9) In the second embodiment, the packaging cushioning material 42 made of the paper pipe 14 may not be integrally provided on the inner wall surface of the cardboard box 2, or may be formed separately.
[0056]
The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings can achieve a plurality of purposes at the same time, and has technical utility by achieving one of the purposes.
[Brief description of the drawings]
FIG. 1 is a perspective view for explaining a packaging cushioning material of a first embodiment and a packaging structure of articles using the packaging cushioning material.
FIG. 2A is a front view of a paper sheet material that is a constituent member of the cushioning material for protecting corners of the first embodiment, and FIG. 2B is a diagram of attaching a plurality of paper pipes to the paper sheet material. The front view of the packaging cushioning material for corner protection which becomes, (c) shows the top view of the said packaging cushioning material.
3A is a front view of a paper sheet material that is a constituent member of the packaging cushioning material for protecting the central portion of the first embodiment, and FIG. 3B is a diagram in which a plurality of paper pipes are attached to the paper sheet material. The front view of the packaging cushioning material for protection of the center part which becomes, (c) shows the top view of the said packaging cushioning material.
FIG. 4 is a perspective view for explaining a cushioning material for packaging according to a second embodiment and a packaging structure using the cushioning material (before packaging).
FIG. 5 is a perspective view for explaining a cushioning material for packaging according to a second embodiment and a packaging structure using the cushioning material (when packaging).
FIG. 6 is an enlarged view of a main part of a cushioning material for packaging according to a second embodiment having a notch in the peripheral wall.
FIG. 7 is an enlarged cross-sectional view of a main part of a cushioning material for packaging according to a second embodiment in which ends of paper pipes are connected to each other using a connecting member.
FIG. 8 is a perspective view of another embodiment of the cushioning material for packaging.
[Explanation of symbols]
2: Cardboard box (packaging container)
4: Goods
6, 8, 10, 42, 44, 46: cushioning material for packaging
12, 32: Paper sheet material
12a: Paper pipe mounting surface
12b: Paper pipe non-mounting surface
14: Paper pipe
16: Crease
18, 20, 22, 34, 36: Pipe installation area
38: Ridge line
48: Notch
52: Continuous part
54: Connection member

Claims

A cushioning material for packaging disposed between the packaging container and the article,
A paper sheet material and a plurality of paper pipes attached to at least one surface of the paper sheet material;
The paper sheet material has a plurality of folds and at least seven pipe attachment regions partitioned into a rectangular shape by the creases, and at least one paper pipe is attached to each of the pipe attachment regions,
The paper sheet material includes at least a pair of the first pipe attachment region, a second pipe attachment region continuous with one side of the first pipe attachment region, and a side adjacent to the side where the first pipe attachment region of the second pipe attachment region is continuous. A pair of third pipe attachment areas that are continuous to the sides of the first pipe attachment area, a fourth pipe attachment area that is continuous to an edge opposite to the side where the second pipe attachment area of the first pipe attachment area is continuous, and a first pipe of the fourth pipe attachment area. A pair of fifth pipe attachment regions that are respectively connected to a pair of sides that are adjacent to the sides where the attachment regions are continuous are formed,
It is deformable between a state in which the paper sheet material is expanded in a flat shape and a state in which the paper sheet material is folded at each fold,
A cushioning material for packaging, wherein all the paper pipes are attached in parallel in a state where the paper sheet material is spread in a flat shape.

In a state where the paper sheet material is expanded in a flat shape, all the paper pipes are attached in parallel to the crease between the first pipe attachment region and the second pipe attachment region,
The cushioning material for packaging according to claim 1, wherein at least one end of the paper pipe attached to the first pipe attachment region protrudes from the first pipe attachment region .

A cushioning material for packaging disposed between the packaging container and the article,
A paper sheet material and a plurality of paper pipes attached to at least one surface of the paper sheet material;
The paper sheet material has a plurality of folds and at least four pipe attachment areas partitioned into rectangular shapes by the creases, and at least one paper pipe is attached to each pipe attachment area,
The paper sheet material includes at least a pair of the first pipe attachment region, a second pipe attachment region continuous with one side of the first pipe attachment region, and a side adjacent to the side where the first pipe attachment region of the second pipe attachment region is continuous. A pair of third pipe attachment regions that are respectively connected to the sides of the
It is deformable between a state in which the paper sheet material is expanded in a flat shape and a state in which the paper sheet material is folded at each fold,
In a state where the paper sheet material is expanded in a flat shape, all the paper pipes are attached in parallel to the crease between the first pipe attachment region and the second pipe attachment region,
At least one end of the paper pipe is attached to the first pipe mounting region, packaging wearing cushioning material you characterized in that protrudes from the first pipe mounting region.

The paper pipe is attached only to the side where the crease of the paper sheet material is located ,
A paper pipe positioned closest to the second pipe region and attached to the first pipe attachment region, and a first pipe attached to the second pipe attachment region in a state where the paper sheet material is developed in a planar shape. The packaging buffer material according to any one of claims 1 to 3, wherein the paper pipes positioned on the region side are in close contact with each other .

A cushioning material for packaging disposed between the packaging container and the article,
A paper sheet material and a plurality of paper pipes attached to at least one surface of the paper sheet material;
The paper sheet material has a plurality of folds and at least four pipe attachment areas partitioned into rectangular shapes by the creases, and at least one paper pipe is attached to each pipe attachment area,
The paper sheet, at least a first pipe mounting region, and a second pipe mounting region connected to one side of the first pipe mounting region, a pair of contact adjacent to the first pipe mounting region is contiguous sides of the second pipe attachment region A pair of third pipe attachment regions that are respectively connected to the sides of the
It is deformable between a state in which the paper sheet material is expanded in a flat shape and a state in which the paper sheet material is folded at each fold,
The paper pipe is attached only to the side where the crease of the paper sheet material is located,
In a state where the paper sheet material is spread out in a planar shape, all the paper pipes are attached in parallel, and the paper pipe located at the most second pipe region side attached to the first pipe attachment region; A cushioning material for packaging, wherein the paper pipes located closest to the first pipe region and attached to the two-pipe attachment region are in close contact with each other.

In a state where the paper sheet material is spread out in a planar shape, the paper pipe located closest to the second pipe region attached to the first pipe attachment region is between the first pipe attachment region and the second pipe attachment region. The packaging cushioning material according to claim 4 or 5, wherein the packaging cushioning material projects over the second pipe attachment region across the crease.

The packaging cushioning material according to any one of claims 4 to 6 is a packaging structure of an article disposed between a packaging container and the article,
A packaging structure for an article, wherein the non-attached surface of the paper sheet material is in surface contact with the article.

The packaging cushioning material according to any one of claims 4 to 6 is a packaging structure of an article disposed between a packaging container and the article,
The paper pipe non-mounting surface of the paper sheet material is in surface contact with the article,
A packaging structure for an article, wherein the crease of the paper sheet material is along a ridge line of the article.

9. The article packaging structure according to claim 7 or 8, wherein at least one of the paper pipes extending along the height direction of the article protrudes from an upper surface or a lower surface of the article.