JP2021102460A - Packaging bag and sheet for the same - Google Patents

Packaging bag and sheet for the same Download PDF

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JP2021102460A
JP2021102460A JP2019234383A JP2019234383A JP2021102460A JP 2021102460 A JP2021102460 A JP 2021102460A JP 2019234383 A JP2019234383 A JP 2019234383A JP 2019234383 A JP2019234383 A JP 2019234383A JP 2021102460 A JP2021102460 A JP 2021102460A
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packaging bag
ruled line
main surface
ruled
flexible
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JP7380192B2 (en
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佳子 平山
Yoshiko Hirayama
佳子 平山
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Oji Holdings Corp
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Oji Holdings Corp
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Priority to PCT/JP2020/044325 priority patent/WO2021107128A1/en
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Abstract

To provide a packaging bag which may flexibly pack contents having various shapes.SOLUTION: A packaging bag 1 formed of a cardboard sheet includes: two major surface parts 2, 3 facing each other; two side flaps 4, 4 which join side edges of the two major surface parts 2, 3; and a flap 5 which seals an opening formed by the two major surface parts 2, 3. The packaging bag 1 includes flexible ruled lines 10, which are provided separately from connection parts between the major surface parts 2, 3 and each side flap 4 and the flap 5 and normal ruled lines 23, 24, 25 located at a connection part between the major surface parts 2, 3, at the major surface parts 2, 3. Each flexible ruled line 10 includes three kinds of ruled lines 11, 12, 13 extending in three directions D1, D2, D3 which are different from a direction Df, in which a flute of a middle core 6 of the cardboard sheet extends, and different from each other.SELECTED DRAWING: Figure 1

Description

本発明は、段ボールシートで形成された包装袋およびこの包装袋用シートに関する。 The present invention relates to a packaging bag made of a corrugated cardboard sheet and a sheet for the packaging bag.

従来、物品を包装するための包装袋として、中実の厚紙(ボール紙)で形成された封筒(いわゆるレターパック)が実用化されている。また、このような封筒に緩衝機能を持たせたものも提案されている。たとえば特許文献1には、一枚の段ボールシートで形成された段ボール製封筒が開示されている。この段ボール製封筒は、厚みのある品物であっても比較的容易に挿入することができるように、マチ部や折り曲げ容易線が設けられている。 Conventionally, an envelope (so-called letter pack) made of solid cardboard (cardboard) has been put into practical use as a wrapping bag for wrapping articles. In addition, an envelope having a cushioning function has also been proposed. For example, Patent Document 1 discloses a corrugated cardboard envelope made of a single corrugated cardboard sheet. This corrugated cardboard envelope is provided with a gusset portion and an easily bendable line so that even a thick item can be inserted relatively easily.

実用新案登録第3195833号Utility model registration No. 3195833

ところで、段ボールシートは、中実の厚紙(ボール紙)よりも高い緩衝性能を有してはいるものの、包装袋の内部で品物(内容物)が動いてしまっては、たとえ段ボールシートで形成された包装袋であっても十分に内容物を保護できないおそれがある。上記の特許文献1に記載の段ボール製封筒は、厚みのある品物を封筒に挿入する際に開口を広げる点に着目した技術であって、内容物を拘束して保護するという観点からは改善の余地がある。また、内容物の形状は一定ではないことから、さまざまな形状のものをフレキシブルに梱包できることが望ましい。 By the way, although the corrugated cardboard sheet has a higher cushioning performance than the solid cardboard (cardboard), if the item (contents) moves inside the packaging bag, it is formed of the corrugated cardboard sheet. Even a corrugated cardboard packaging bag may not be able to adequately protect the contents. The corrugated cardboard envelope described in Patent Document 1 is a technique focusing on widening the opening when a thick item is inserted into the envelope, and is improved from the viewpoint of restraining and protecting the contents. There is room. Moreover, since the shape of the contents is not constant, it is desirable to be able to flexibly pack various shapes.

本件は、上記の課題に鑑みて創案されたものであり、さまざまな形状の内容物をフレキシブルに梱包可能な包装袋および包装袋用シートを提供することを目的の一つとする。なお、この目的に限らず、後述する「発明を実施するための形態」に示す各構成から導き出される作用および効果であって、従来の技術では得られない作用および効果を奏することも、本件の他の目的である。 This case was devised in view of the above problems, and one of the purposes is to provide a packaging bag and a sheet for a packaging bag that can flexibly pack contents of various shapes. Not limited to this purpose, it is also possible that the actions and effects derived from each configuration shown in the “mode for carrying out the invention” described later and which cannot be obtained by the conventional technique are exhibited. Another purpose.

ここで開示する包装袋は、互いに対面する二つの主面部と、前記二つの主面部の側縁同士を接合する二つのサイドフラップと、前記二つの主面部で形成される開口を封緘するフラップと、を具備するとともに段ボールシートで形成された包装袋であって、少なくとも一つの前記主面部において、前記主面部と各々の前記サイドフラップおよび前記フラップとの各連設部および前記主面部同士の連設部に位置する通常罫線とは別に設けられたフレキシブル罫線を備える。前記フレキシブル罫線は、前記段ボールシートの中芯のフルートが延在する方向とは異なる三方向であって互いに異なる方向に延びる三種類の罫線を含む。 The packaging bag disclosed here includes two main surface portions facing each other, two side flaps for joining the side edges of the two main surface portions, and a flap for sealing the opening formed by the two main surface portions. , A packaging bag made of a corrugated cardboard sheet, wherein in at least one main surface portion, the main surface portion and each of the side flaps and the flaps are connected to each other, and the main surface portions are connected to each other. It is provided with a flexible ruled line provided separately from the normal ruled line located in the setting portion. The flexible ruled line includes three types of ruled lines extending in three directions different from the direction in which the flute of the core of the corrugated cardboard sheet extends and extending in different directions from each other.

また、ここで開示する包装袋用シートは、連設された二つの主面部と、前記二つの主面部の側縁同士を接合するための二つのサイドフラップと、前記二つの主面部で形成される開口を封緘するためのフラップと、を具備し、段ボールシートからなる包装袋用シートであって、少なくとも一つの前記主面部において、前記主面部と各々の前記サイドフラップおよび前記フラップとの各連設部および前記主面部同士の連設部に位置する通常罫線とは別に設けられたフレキシブル罫線を備える。前記フレキシブル罫線は、前記段ボールシートの中芯のフルートが延在する方向とは異なる三方向であって互いに異なる方向に延びる三種類の罫線を含む。 Further, the packaging bag sheet disclosed here is formed of two consecutive main surface portions, two side flaps for joining the side edges of the two main surface portions, and the two main surface portions. A packaging bag sheet made of a corrugated cardboard sheet, comprising a flap for sealing the opening, and in at least one main surface portion, each series of the main surface portion and each of the side flaps and the flaps. It is provided with a flexible ruled line provided separately from the normal ruled line located at the setting portion and the continuous portion between the main surface portions. The flexible ruled line includes three types of ruled lines extending in three directions different from the direction in which the flute of the core of the corrugated cardboard sheet extends and extending in different directions from each other.

開示の包装袋および包装袋用シートによれば、もともと折れ曲がりやすいフルートの延在方向以外の三方向にも折れ曲がりやすいため、フレキシブル性を高めることができる。これにより、さまざま形状の内容物をフレキシブルに梱包することができる。 According to the disclosed packaging bag and packaging bag sheet, the flute is easily bent in three directions other than the extending direction of the flute, which is originally easy to bend, so that the flexibility can be enhanced. As a result, contents of various shapes can be flexibly packed.

実施形態に係る包装袋用シートの平面図(包装袋の展開図)である。It is a top view (development view of the packaging bag) of the sheet for a packaging bag which concerns on embodiment. 図1の包装袋用シートを組み立ててできる包装袋を示す斜視図である。It is a perspective view which shows the packaging bag which can assemble the packaging bag sheet of FIG. 図2の包装袋の作用を説明するための斜視図である。It is a perspective view for demonstrating the operation of the packaging bag of FIG. (a)〜(e)はフレキシブル罫線の変形例を説明するための図である。(A) to (e) are diagrams for explaining a modified example of a flexible ruled line. 図1の包装袋用シートとは外形の異なる包装袋用シートの平面図(包装袋の展開図)である。It is a plan view (development view of the packaging bag) of the packaging bag sheet having a different outer shape from the packaging bag sheet of FIG. 他の変形例に係る包装袋用シートの平面図(包装袋の展開図)である。It is a top view (development view of the packaging bag) of the sheet for the packaging bag which concerns on another modification.

図面を参照して、実施形態としての包装袋および包装袋用シートについて説明する。以下の実施形態はあくまでも例示に過ぎず、この実施形態で明示しない種々の変形や技術の適用を排除する意図はない。下記の実施形態の各構成は、それらの趣旨を逸脱しない範囲で種々変形して実施することができる。また、必要に応じて取捨選択することができ、あるいは適宜組み合わせることができる。 A packaging bag and a packaging bag sheet as embodiments will be described with reference to the drawings. The following embodiments are merely examples, and there is no intention to exclude the application of various modifications and techniques not specified in this embodiment. Each configuration of the following embodiments can be variously modified and implemented without departing from their gist. In addition, it can be selected as needed, or can be combined as appropriate.

[1.構成]
[1−1.包装袋および包装袋用シート]
図1は本実施形態に係る包装袋1を組み立てる前の包装袋用シート9を示す平面図(包装袋1の展開図)であり、図2は図1の包装袋用シート9を組み立ててできる包装袋1を示す斜視図である。本実施形態の包装袋1は、一枚の段ボールシートからなる包装袋用シート9を組み立てて形成されるもの(たとえばレターパック)である。なお、図1の包装袋用シート9は、包装袋1の外側の面が見える向き(外面が紙面手前側になる向き)で示している。以下、図1に示す包装袋用シート9を「包装袋1の展開状態」ともいい、図2に示す包装袋1の状態を「組立状態」ともいう。
[1. Constitution]
[1-1. Packaging bag and sheet for packaging bag]
FIG. 1 is a plan view (expanded view of the packaging bag 1) showing a packaging bag sheet 9 before assembling the packaging bag 1 according to the present embodiment, and FIG. 2 is an assembly of the packaging bag sheet 9 of FIG. It is a perspective view which shows the packaging bag 1. The packaging bag 1 of the present embodiment is formed by assembling a packaging bag sheet 9 made of one corrugated cardboard sheet (for example, a letter pack). The packaging bag sheet 9 in FIG. 1 is shown in a direction in which the outer surface of the packaging bag 1 can be seen (the outer surface is on the front side of the paper surface). Hereinafter, the packaging bag sheet 9 shown in FIG. 1 is also referred to as an “unfolded state of the packaging bag 1”, and the state of the packaging bag 1 shown in FIG. 2 is also referred to as an “assembled state”.

本実施形態の段ボールシートは、波形に成形された中芯6(図1のA部参照)の両側に対してライナが貼付された両面段ボール(例えばシングルフルートの段ボール)のシートであり、一般的な段ボールシートに比べて坪量を小さくした軽量な段ボールシートである。このような坪量の小さな段ボールシートは「軽量段ボールシート」とも呼ばれ、一般的な段ボールシートに比べて軽量であるとともに、柔らかく、フレキシブルに変形するという特性を持つため、特に好適に用いられる。 The corrugated cardboard sheet of the present embodiment is a double-sided corrugated cardboard (for example, a single flute corrugated cardboard) sheet in which liners are attached to both sides of a corrugated core 6 (see part A in FIG. 1), which is generally used. It is a lightweight corrugated cardboard sheet with a smaller basis weight than a standard corrugated cardboard sheet. Such a corrugated cardboard sheet having a small basis weight is also called a "lightweight corrugated cardboard sheet", and is particularly preferably used because it is lighter than a general corrugated cardboard sheet and has the characteristics of being soft and flexibly deformed.

本実施形態の軽量段ボールシートは、JIS Z 0203に準拠して温度23[℃]および湿度50[%]の温湿度条件で24時間以上の前処理が施された常態において、ライナの坪量が90[g/m]以下であり、中芯6の坪量が150[g/m]以下である。なお、軽量段ボールシートとしては、例えば特願2019-216609のものを適用可能である。本実施形態の包装袋1は、フレキシブル性の高い軽量段ボールシートを材料とすることで、よりフレキシブルな変形が可能となっている。 The lightweight corrugated sheet of the present embodiment has a liner basis weight under normal conditions of pretreatment for 24 hours or more under temperature and humidity conditions of a temperature of 23 [° C.] and a humidity of 50 [%] in accordance with JIS Z 0203. It is 90 [g / m 2 ] or less, and the basis weight of the core 6 is 150 [g / m 2 ] or less. As the lightweight corrugated cardboard sheet, for example, Japanese Patent Application No. 2019-216609 can be applied. The packaging bag 1 of the present embodiment can be deformed more flexibly by using a highly flexible lightweight corrugated cardboard sheet as a material.

なお、図1中のA部は、中芯6のフルートが延在する方向Dfを示している。図1に示す包装袋用シート9では、少なくとも一組の対辺がフルートの延在方向Dfと一致する。以下、フルートの延在方向Dfを、段ボールシートの「目方向Df」という。目方向Dfは段ボールシートの所定方向(一方向)に延びるため、段ボールシートは目方向Dfに沿う方向で折れ曲がりやすい。以下、図1の包装袋用シート9の説明において、目方向Dfの一側(包装袋1の底側)を「底側」とし、目方向Dfの他側(包装袋1の開口側)を「開口側」とする。 Part A in FIG. 1 indicates the direction Df in which the flute of the core 6 extends. In the packaging bag sheet 9 shown in FIG. 1, at least one set of opposite sides coincides with the extending direction Df of the flute. Hereinafter, the extension direction Df of the flute is referred to as the "eye direction Df" of the corrugated cardboard sheet. Since the eye direction Df extends in a predetermined direction (one direction) of the corrugated cardboard sheet, the corrugated cardboard sheet is easily bent in the direction along the eye direction Df. Hereinafter, in the description of the packaging bag sheet 9 of FIG. 1, one side of the eye direction Df (bottom side of the packaging bag 1) is referred to as the “bottom side”, and the other side of the eye direction Df (opening side of the packaging bag 1) is defined as the “bottom side”. Let it be the "opening side".

図1および図2に示すように、包装袋用シート9(展開状態の包装袋1)は、表面(おもてめん)部2および裏面部3と、二つのサイドフラップ4と、一つのフラップ5とを備える。本実施形態の包装袋1は、目方向Dfと直交する方向D1(以下「第一方向D1」という)の中心を通り目方向Dfに延びる直線C(以下「中心線C」という)に関し左右対称形状である。 As shown in FIGS. 1 and 2, the packaging bag sheet 9 (packaging bag 1 in the unfolded state) has a front surface (front noodle) portion 2 and a back surface portion 3, two side flaps 4, and one flap. 5 and. The packaging bag 1 of the present embodiment is symmetrical with respect to a straight line C (hereinafter referred to as "center line C") extending in the eye direction Df through the center of the direction D1 (hereinafter referred to as "first direction D1") orthogonal to the eye direction Df. The shape.

表面部2および裏面部3は目方向Dfに連設され、二つのサイドフラップ4は表面部2の左右両側に配置され、フラップ5は表面部2の開口側に配置される。なお、ここでいう「左右」とは、図1に示す包装袋用シート9において、第一方向D1の一側(図1中右側)を「右」とし、第一方向D1の他側(図1中左側)を「左」とした場合の方向である。 The front surface portion 2 and the back surface portion 3 are connected in series in the eye direction Df, the two side flaps 4 are arranged on the left and right sides of the front surface portion 2, and the flaps 5 are arranged on the opening side of the front surface portion 2. The term "left and right" as used herein means that in the packaging bag sheet 9 shown in FIG. 1, one side of the first direction D1 (right side in FIG. 1) is "right" and the other side of the first direction D1 (FIG. 1). This is the direction when the left side of 1 is set to "left".

表面部2および裏面部3は、包装袋1の主面部(本体面部)として機能する平面状の部分であり、組立状態で互いに対面する。以下、表面部2および裏面部3を特に区別しない場合には、「主面部2,3」という。本実施形態の主面部2,3は、目方向Dfに延びる辺が、目方向Dfと直交する第一方向D1に延びる辺よりも短い矩形状に形成されている。組立状態では、表面部2の開口側の辺と裏面部3の開口側の辺とで、図示しない開口が形成される。 The front surface portion 2 and the back surface portion 3 are flat portions that function as the main surface portion (main body surface portion) of the packaging bag 1 and face each other in the assembled state. Hereinafter, when the front surface portion 2 and the back surface portion 3 are not particularly distinguished, they are referred to as “main surface portions 2 and 3”. The main surface portions 2 and 3 of the present embodiment are formed in a rectangular shape in which the side extending in the eye direction Df is shorter than the side extending in the first direction D1 orthogonal to the eye direction Df. In the assembled state, an opening (not shown) is formed between the side on the opening side of the front surface portion 2 and the side on the opening side of the back surface portion 3.

図1に示す展開状態では、表面部2および裏面部3が、図1中破線で示す罫線23(通常罫線)を挟んで目方向Dfに連設される。罫線23は、段ボールシートを折り曲げて包装袋1を形成するための(製袋用の)折罫である。図1に示す包装袋用シート9では、三本の罫線23がその両端部を除いて互いに平行に設けられており、厚みの大きな内容物も収容可能となっている。 In the unfolded state shown in FIG. 1, the front surface portion 2 and the back surface portion 3 are continuously provided in the eye direction Df with the ruled line 23 (normal ruled line) shown by the broken line in FIG. 1 interposed therebetween. The ruled line 23 is a fold ruled line (for bag making) for folding the corrugated cardboard sheet to form the packaging bag 1. In the packaging bag sheet 9 shown in FIG. 1, three ruled lines 23 are provided in parallel with each other except for both ends thereof, and can accommodate thick contents.

なお、三本の罫線23のうち、真ん中の罫線23は表面部2および裏面部3の境界線であり、残りの二本の罫線23はマチ用である。この罫線23は、主面部2,3同士が連設される部分(連設部)に位置する通常罫線である。なお、連設部とは、二つの面部の境界を含み連設方向と直交する方向に延在する所定範囲を意味する。例えば、主面部2,3同士の連設部は、二つの主面部2,3の境界を含み第一方向D1に延在する所定範囲(表面部2の底側端部および裏面部3の底側端部からなる範囲)を意味する。 Of the three ruled lines 23, the middle ruled line 23 is the boundary line between the front surface portion 2 and the back surface portion 3, and the remaining two ruled lines 23 are for gussets. The ruled line 23 is a normal ruled line located at a portion (continuous portion) in which the main surface portions 2 and 3 are connected to each other. The continuous connection portion means a predetermined range extending in a direction orthogonal to the continuous connection direction including the boundary between the two surface portions. For example, the continuous portion between the main surface portions 2 and 3 includes a boundary between the two main surface portions 2 and 3 and extends in a predetermined range extending in the first direction D1 (bottom side end portion of the front surface portion 2 and the bottom of the back surface portion 3). It means the range consisting of the side ends).

各サイドフラップ4は、図1中にドット模様を付した部分であり、二つの主面部2,3の側縁同士を接合するためののりしろ面(のりしろ部)として機能する。本実施形態のサイドフラップ4は、表面部2の左右それぞれに、図1中破線で示す罫線24(通常罫線)を挟んで連設される。具体的には、各サイドフラップ4は、表面部2の目方向Dfに延びる辺の全体に亘って設けられる。 Each side flap 4 is a portion having a dot pattern in FIG. 1, and functions as a margin surface (glue portion) for joining the side edges of the two main surface portions 2 and 3. The side flaps 4 of the present embodiment are connected to the left and right sides of the surface portion 2 with a ruled line 24 (normal ruled line) shown by a broken line in FIG. 1 interposed therebetween. Specifically, each side flap 4 is provided over the entire side extending in the eye direction Df of the surface portion 2.

罫線24は、上記の罫線23と同様、段ボールシートを折り曲げて包装袋1を形成するための(製袋用の)折罫である。図1に示す包装袋用シート9では、三本の罫線24がその両端部を除いて互いに平行に設けられており、厚みの大きな内容物も収容可能となっている。なお、三本の罫線24のうち、真ん中の罫線24は表面部2および各サイドフラップ4の境界線であり、残りの二本の罫線24はマチ用である。この罫線24は、表面部2と各サイドフラップ4とが連設される部分(連設部)に位置する通常罫線である。 The ruled line 24 is a fold ruled line (for bag making) for forming the packaging bag 1 by bending the corrugated cardboard sheet, similarly to the ruled line 23 described above. In the packaging bag sheet 9 shown in FIG. 1, three ruled lines 24 are provided parallel to each other except for both ends thereof, and can accommodate thick contents. Of the three ruled lines 24, the middle ruled line 24 is the boundary line between the surface portion 2 and each side flap 4, and the remaining two ruled lines 24 are for gussets. The ruled line 24 is a normal ruled line located at a portion (continuous portion) in which the surface portion 2 and each side flap 4 are continuously provided.

本実施形態の包装袋1では、図2に示すように、二つのサイドフラップ4が包装袋1の内側を向く面(内面)に貼付される。すなわち、左右のサイドフラップ4は、組立状態の包装袋1において、裏面部3における表面部2を向く面(裏面部3の内側の面)の左側部および右側部のそれぞれに貼付される。以下、サイドフラップ4が包装袋1の内側に貼付された仕様を「内貼り」という。 In the packaging bag 1 of the present embodiment, as shown in FIG. 2, two side flaps 4 are attached to the inward facing surface (inner surface) of the packaging bag 1. That is, the left and right side flaps 4 are attached to the left side portion and the right side portion of the back surface portion 3 facing the front surface portion 2 (the inner surface of the back surface portion 3) in the assembled packaging bag 1. Hereinafter, the specification in which the side flap 4 is attached to the inside of the packaging bag 1 is referred to as "inner attachment".

図1に示すように、本実施形態のサイドフラップ4は、底側(図1中の上側)の縁部4bが直線状に形成されて角張っているのに対し、開口側(図1中の下側)の縁部4aが円弧状に形成されて丸められている。つまり、開口側の縁部4aの端面は曲面状である。これにより、内貼りの包装袋1であっても、開口から挿入される物体(品物)がサイドフラップ4に引っ掛かることが抑制される。また、本実施形態の包装袋1では、サイドフラップ4が予め潰された状態で裏面部3に貼付されている。すなわち、包装袋1が組立状態にされる前に(包装袋用シート9の状態で)、サイドフラップ4が柔らかくなるよう前加工がされている。 As shown in FIG. 1, in the side flap 4 of the present embodiment, the edge portion 4b on the bottom side (upper side in FIG. 1) is formed in a straight line and is angular, whereas the side flap 4 has an opening side (in FIG. 1). The edge 4a on the lower side) is formed in an arc shape and is rounded. That is, the end face of the edge portion 4a on the opening side has a curved surface shape. As a result, even in the case of the inner packaging bag 1, it is possible to prevent an object (article) inserted through the opening from being caught in the side flap 4. Further, in the packaging bag 1 of the present embodiment, the side flap 4 is attached to the back surface portion 3 in a state of being crushed in advance. That is, before the packaging bag 1 is put into the assembled state (in the state of the packaging bag sheet 9), the side flap 4 is preprocessed so as to be soft.

フラップ5は、二つの主面部2,3で形成される開口を封緘する部分(「ベロ」や「舌片」とも称される部位)であり、サイドフラップ4とは異なる方向に延在する。本実施形態のフラップ5は、表面部2の開口側に、図1中破線で示す罫線25(通常罫線)を挟んで連設され、表面部2の下側の辺の全体に亘って設けられる。罫線25は、上記の罫線23,24と同様、段ボールシートを折り曲げて包装袋1を形成するための(製袋用の)折罫である。図1に示す包装袋用シート9では、二本の罫線25が互いに平行に設けられており、厚みの大きな内容物も収容可能となっている。なお、二本の罫線25のうちの一方は表面部2およびフラップ5の境界線であり、他方はマチ用である。この罫線25は、表面部2とフラップ5とが連設される部分(連設部)に位置する通常罫線である。 The flap 5 is a portion (a portion also referred to as a “bello” or a “tongue piece”) that seals the opening formed by the two main surface portions 2 and 3, and extends in a direction different from that of the side flap 4. The flap 5 of the present embodiment is continuously provided on the opening side of the surface portion 2 with a ruled line 25 (normal ruled line) shown by a broken line in FIG. 1 interposed therebetween, and is provided over the entire lower side of the surface portion 2. .. The ruled line 25 is a fold ruled line (for bag making) for bending the corrugated cardboard sheet to form the packaging bag 1, similar to the above-mentioned ruled lines 23 and 24. In the packaging bag sheet 9 shown in FIG. 1, two ruled lines 25 are provided in parallel with each other, and a thick content can be accommodated. One of the two ruled lines 25 is the boundary line between the surface portion 2 and the flap 5, and the other is for the gusset. The ruled line 25 is a normal ruled line located at a portion (continuous portion) in which the surface portion 2 and the flap 5 are continuously provided.

また、包装袋1および包装袋用シート9には開封用の破断構造30が設けられる。破断構造30は、段ボールシートを厚み方向に貫通するとともに線状に延設される。本実施形態の包装袋1および包装袋用シート9では、破断構造30としてミシン目(ミシン刃)が採用される。図1および図2中に太線で示すように、本実施形態の破断構造30は、表面部2と各サイドフラップ4との境界に設けられる。すなわち、本実施形態の包装袋1は、二つの破断構造30により開封が可能となっている。 Further, the packaging bag 1 and the packaging bag sheet 9 are provided with a breaking structure 30 for opening. The fracture structure 30 penetrates the corrugated cardboard sheet in the thickness direction and extends linearly. In the packaging bag 1 and the packaging bag sheet 9 of the present embodiment, a perforation (perforation blade) is adopted as the breaking structure 30. As shown by thick lines in FIGS. 1 and 2, the fracture structure 30 of the present embodiment is provided at the boundary between the surface portion 2 and each side flap 4. That is, the packaging bag 1 of the present embodiment can be opened by the two breaking structures 30.

図1に示すように、本実施形態の各破断構造30は、真ん中の罫線24に沿って一直線に延設された二本の直線部31と、二本の直線部31の間をつなぐ一つの円弧部32とから構成される。円弧部32は、包装袋1の開封時に指で押される部分であり、最初に破られる部分である。円弧部32が破られると、これに繋がる直線部31が続けて破られ、包装袋1が開封される。 As shown in FIG. 1, each fracture structure 30 of the present embodiment is one that connects two straight portions 31 extending in a straight line along a ruled line 24 in the middle and two straight portions 31. It is composed of an arc portion 32. The arc portion 32 is a portion that is pressed by a finger when the packaging bag 1 is opened, and is a portion that is first torn. When the arc portion 32 is broken, the straight portion 31 connected to the arc portion 32 is continuously broken, and the packaging bag 1 is opened.

ところで、段ボールシートは目方向Dfに沿う折線で折れ曲がりやすいという特性を有する一方で、目方向Df以外の方向(特に目方向Dfと直交する第一方向D1)に沿う折線では折れ曲がりにくいという特性がある。そのため、内容物が包装袋内で動いてしまうと、せっかくの段ボールシートの緩衝機能が十分に発揮されないというデメリットがあった。これに対し、本実施形態の包装袋1には、主面部2,3が内容物にフィットできるようフレキシブルに変形するためのフレキシブル罫線10が設けられている。 By the way, while the corrugated cardboard sheet has a characteristic that it is easy to bend at a folding line along the eye direction Df, it has a characteristic that it is hard to bend at a folding line along a direction other than the eye direction Df (particularly, the first direction D1 orthogonal to the eye direction Df). .. Therefore, if the contents move inside the packaging bag, there is a demerit that the cushioning function of the corrugated cardboard sheet is not fully exhibited. On the other hand, the packaging bag 1 of the present embodiment is provided with a flexible ruled line 10 for flexibly deforming the main surface portions 2 and 3 so as to fit the contents.

[1−2.フレキシブル罫線]
図1および図2中に点線で示すように、フレキシブル罫線10は、各主面部2,3の折れ曲がりを補助するための罫線であり、各主面部2,3において上記の通常罫線23,24,25とは別に設けられる。本実施形態のフレキシブル罫線10は、包装袋1の内側の面に設けられるが、包装袋1の外側の面に設けられてもよいし、内側および外側の両面に設けられてもよい。なお、フレキシブル罫線10の種類は特に限られず、押罫,ミシン目(ミシン刃),リード罫などを適用可能である。
[1-2. Flexible ruled line]
As shown by the dotted lines in FIGS. 1 and 2, the flexible ruled line 10 is a ruled line for assisting the bending of the main surface portions 2 and 3, and the above-mentioned normal ruled lines 23 and 24 in each of the main surface portions 2 and 3. It is provided separately from 25. The flexible ruled line 10 of the present embodiment is provided on the inner surface of the packaging bag 1, but may be provided on the outer surface of the packaging bag 1 or may be provided on both the inner and outer surfaces. The type of the flexible ruled line 10 is not particularly limited, and press ruled lines, perforations (perforation blades), lead ruled lines, and the like can be applied.

フレキシブル罫線10は、段ボールシートの目方向Dfとは異なる三方向に延設された三種類の罫線11,12,13を含む。これら三種類の罫線11,12,13が延設される方向は互いに異なる。すなわち、包装袋1の主面部2,3は、合計で四方向(目方向Df+互いに異なる三方向)に折れ曲がりやすい構造となっており、これによりフレキシブルな変形が可能となっている。 The flexible ruled line 10 includes three types of ruled lines 11, 12, and 13 extending in three directions different from the eye direction Df of the corrugated cardboard sheet. The directions in which these three types of ruled lines 11, 12, and 13 are extended are different from each other. That is, the main surface portions 2 and 3 of the packaging bag 1 have a structure that is easily bent in four directions (Df in the eye direction + three directions different from each other) in total, which enables flexible deformation.

本実施形態の包装袋1および包装袋用シート9では、表面部2および裏面部3に同様のフレキシブル罫線10が設けられる。フレキシブル罫線10は、各主面部2,3において全体的に配置されるとともに、中心線Cに関し左右対称に設けられる。また、本実施形態のフレキシブル罫線10には、目方向Dfに延びる罫線は含まれない。言い換えると、主面部2,3を目方向Dfに沿う折線で折り曲げる場合には、中芯6の溝が利用される。 In the packaging bag 1 and the packaging bag sheet 9 of the present embodiment, similar flexible ruled lines 10 are provided on the front surface portion 2 and the back surface portion 3. The flexible ruled lines 10 are arranged as a whole on the main surface portions 2 and 3, and are provided symmetrically with respect to the center line C. Further, the flexible ruled line 10 of the present embodiment does not include a ruled line extending in the eye direction Df. In other words, when the main surface portions 2 and 3 are bent along the folding line along the eye direction Df, the groove of the core 6 is used.

三種類の罫線11,12,13のうち、第一の罫線11は上記の第一方向D1に延設される。つまり、第一の罫線11は、目方向Dfに垂直な「垂直罫線」である。一方、第二の罫線12は左上から右下に向かう方向に延設され、第三の罫線13は右上から左下に向かう方向に延設される。つまり、第二の罫線12および第三の罫線13は、主面部2,3の中央側で互いに交差する方向に延設された「クロス罫線」として設けられる。以下、第二の罫線12および第三の罫線13の延設方向をそれぞれ「第二方向D2」,「第三方向D3」という。本実施形態では、第二方向D2および第三方向D3がそれぞれ、主面部2,3の各対角線に沿う方向となっている。 Of the three types of ruled lines 11, 12, and 13, the first ruled line 11 extends in the first direction D1 described above. That is, the first ruled line 11 is a "vertical ruled line" perpendicular to the eye direction Df. On the other hand, the second ruled line 12 extends from the upper left to the lower right, and the third ruled line 13 extends from the upper right to the lower left. That is, the second ruled line 12 and the third ruled line 13 are provided as "cross ruled lines" extending in the direction of intersecting each other on the central side of the main surface portions 2 and 3. Hereinafter, the extending directions of the second ruled line 12 and the third ruled line 13 are referred to as "second direction D2" and "third direction D3", respectively. In the present embodiment, the second direction D2 and the third direction D3 are directions along the diagonal lines of the main surface portions 2 and 3, respectively.

また、包装袋1および包装袋用シート9には、複数の第一の罫線11が互いに平行に設けられる。第一の罫線11はすべて同じ長さであり、ほぼ等間隔に配置される。また、第二の罫線12および第三の罫線13はいずれも、表面部2および裏面部3に一つずつ設けられる。なお、本実施形態では、第一の罫線11と第二の罫線12および第三の罫線13とが重ならないよう、第二の罫線12および第三の罫線13がいずれも断続的に(間欠的に)一直線に設けられている。第二の罫線12および第三の罫線13の間欠部分をそれぞれ仮想的に結んで一直線とした場合、三種類の罫線11,12,13は各主面部2,3の中央部で交差する。 Further, the packaging bag 1 and the packaging bag sheet 9 are provided with a plurality of first ruled lines 11 in parallel with each other. The first ruled lines 11 are all of the same length and are arranged at substantially equal intervals. Further, each of the second ruled line 12 and the third ruled line 13 is provided on the front surface portion 2 and the back surface portion 3 one by one. In the present embodiment, the second ruled line 12 and the third ruled line 13 are intermittently (intermittently) so that the first ruled line 11, the second ruled line 12, and the third ruled line 13 do not overlap. It is provided in a straight line. When the intermittent portions of the second ruled line 12 and the third ruled line 13 are virtually connected to form a straight line, the three types of ruled lines 11, 12, and 13 intersect at the central portion of each of the main surface portions 2, 3.

[2.作用および効果]
(1)上述した包装袋1および包装袋用シート9では、主面部2,3に、目方向Df以外の三方向に延びる罫線11,12,13を含むフレキシブル罫線10が設けられることから、もともと折れ曲がりやすい目方向Df以外の三方向にも折れ曲がりやすく、フレキシブル性を高めることができる。
[2. Action and effect]
(1) In the packaging bag 1 and the packaging bag sheet 9 described above, the main surface portions 2 and 3 are originally provided with flexible ruled lines 10 including ruled lines 11, 12, and 13 extending in three directions other than the eye direction Df. It is easy to bend in three directions other than the eye direction Df, which makes it easy to bend, and it is possible to increase flexibility.

たとえば図3に示すように、包装袋1に収容される内容物の外形に応じて、主面部2,3が三種類の罫線11,12,13を折線として折れ曲がりやすくなる。これにより、フレキシブルな包装袋1を実現できるため、中実の厚紙(ボール紙)で形成される通常のレターパックと比較して、厚みのある物体や丸い物体など、さまざまな形状の物体(内容物)をその形状に沿ってフレキシブルに梱包できる。 For example, as shown in FIG. 3, depending on the outer shape of the contents housed in the packaging bag 1, the main surface portions 2 and 3 are easily bent with the three types of ruled lines 11, 12 and 13 as folding lines. As a result, a flexible packaging bag 1 can be realized, so that objects of various shapes (contents) such as thick objects and round objects are compared with ordinary letter packs made of solid cardboard (cardboard). Items) can be flexibly packed according to their shape.

このように内容物1の外形に沿った折れ曲がりの変形が容易な包装袋1によれば、シュリンク包装のように内容物の拘束性を高めることができ、包装袋1の資材として用いられている段ボールシートによる緩衝機能を適切に発揮させることができる。したがって、内容物の保護性能を高めるフレキシブルな包装袋1および包装袋用シート9を提供することができる。 As described above, according to the packaging bag 1 which can be easily bent and deformed along the outer shape of the content 1, the binding property of the content can be enhanced like shrink packaging, and the packaging bag 1 is used as a material. The cushioning function of the corrugated cardboard sheet can be appropriately exerted. Therefore, it is possible to provide a flexible packaging bag 1 and a packaging bag sheet 9 that enhance the protection performance of the contents.

また、上記の特許文献1には、開口を広げるための折り曲げ容易線が斜めに設けられている。しかしながら、目方向Dfを考慮せずに罫線を設けただけでは、本実施形態の包装袋1のようにフレキシブル性を向上させることは難しい。これは、段ボールシートには、目方向Dfに沿う折線で折れ曲がりやすいという特性がある一方で、目方向Df以外の方向(特に目方向Dfと直交する第一方向D1)に沿う折線では折れ曲がりにくいという特性があるからである。また、目方向Dfを考慮しない二方向の罫線では、本実施形態のフレキシブル罫線10のように、収容空間を確保するように主面部2,3を変形させることは困難である。この点、上述した包装袋1および包装袋用シート9であれば、収容空間が適切に確保されるように主面部2,3を変形させることが可能である。また、主面部2,3が変形しやすいことにより収容空間が内容物にフィットすることによって内容物を保持する効果を得ることができる。 Further, in the above-mentioned Patent Document 1, an easy-to-bend line for widening the opening is diagonally provided. However, it is difficult to improve the flexibility as in the packaging bag 1 of the present embodiment only by providing the ruled lines without considering the eye direction Df. This is because the cardboard sheet has the characteristic that it is easy to bend at the folding line along the eye direction Df, but it is difficult to bend at the folding line along the direction other than the eye direction Df (especially the first direction D1 orthogonal to the eye direction Df). Because it has characteristics. Further, in the bidirectional ruled line that does not consider the eye direction Df, it is difficult to deform the main surface portions 2 and 3 so as to secure the accommodation space as in the flexible ruled line 10 of the present embodiment. In this respect, with the packaging bag 1 and the packaging bag sheet 9 described above, the main surface portions 2 and 3 can be deformed so that the accommodation space is appropriately secured. Further, since the main surface portions 2 and 3 are easily deformed, the accommodation space fits the contents, so that the effect of holding the contents can be obtained.

(2)段ボールシートは、目方向Dfに垂直な方向(第一方向D1)が最も折れ曲がりにくいが、上述した包装袋1では、この第一方向D1に沿う折線での折れ曲がりを第一の罫線11により補助できる。さらに、主面部2,3の中央側で交差するように二つの罫線12,13が延設されるため、中央側の空間が広くなるように主面部2,3が変形しやすくなり、大きな内容物もフレキシブルに梱包できる。 (2) The corrugated cardboard sheet is most difficult to bend in the direction perpendicular to the eye direction Df (first direction D1), but in the above-mentioned packaging bag 1, the bending along the first direction D1 is the first ruled line 11. Can be assisted by. Further, since the two ruled lines 12 and 13 are extended so as to intersect at the center side of the main surface portions 2 and 3, the main surface portions 2 and 3 are easily deformed so as to widen the space on the central side, which is a large content. Items can be packed flexibly.

(3)特に、上述した包装袋1によれば、第二方向D2および第三方向D3が主面部2,3の各対角線に沿う方向であることから、包装袋1の中央部が広がりやすくなり、大きな内容物もフレキシブルに梱包できる。なお、三種類の罫線11,12,13が主面部2,3の中央部で交差するように設けることで、包装袋1の中央部に広い収容空間を確保しやすくすることができる。 (3) In particular, according to the above-mentioned packaging bag 1, since the second direction D2 and the third direction D3 are in the directions along the diagonal lines of the main surface portions 2 and 3, the central portion of the packaging bag 1 is likely to expand. , Large contents can be packed flexibly. By providing the three types of ruled lines 11, 12, and 13 so as to intersect at the central portions of the main surface portions 2 and 3, it is possible to easily secure a wide storage space in the central portion of the packaging bag 1.

(4)また、第一の罫線11が複数平行に設けられることで、目方向Dfと直交する第一方向D1への折れ曲がりやすさを向上させることができ、内容物の形状やサイズに応じた変形がしやすくなり、フレキシブル性をより向上させることができる。 (4) Further, by providing a plurality of first ruled lines 11 in parallel, it is possible to improve the ease of bending in the first direction D1 orthogonal to the eye direction Df, depending on the shape and size of the contents. It becomes easy to deform, and the flexibility can be further improved.

(5)上述した包装袋1では、フレキシブル罫線10には目方向Dfに延びる罫線が含まれない(目方向Dfに延びる罫線が存在しない)。すなわち、目方向Dfに沿う折線で折り曲げる場合には、もともと折れ曲がりやすい中芯6のフルートの延在方向を利用することで、罫線を一種類省略できる。 (5) In the packaging bag 1 described above, the flexible ruled line 10 does not include a ruled line extending in the eye direction Df (there is no ruled line extending in the eye direction Df). That is, when bending along a folding line along the eye direction Df, one type of ruled line can be omitted by using the extending direction of the flute of the core 6 which is originally easy to bend.

(6)上述した包装袋1によれば、二つのサイドフラップ4が内貼りされていることから、サイドフラップ4が包装袋1の外側の面に貼付される構成と比べて、段ボールシートの厚み分だけ主面部2,3の変形が抑制されにくくなり、フレキシブル性の向上に寄与できる。また、サイドフラップ4の露出する領域が抑えられるため、包装袋1の見栄えが良くなり、意匠性を向上させることができる。さらに、フラップ5を貼付する面が裏面部3のみの平面となるため、封緘時にフラップ5が貼りやすく、また、貼り付けたフラップ5がはがれにくくもなる。 (6) According to the above-mentioned packaging bag 1, since the two side flaps 4 are internally attached, the thickness of the corrugated cardboard sheet is compared with the configuration in which the side flaps 4 are attached to the outer surface of the packaging bag 1. Deformation of the main surface portions 2 and 3 is less likely to be suppressed by the amount, which can contribute to the improvement of flexibility. Further, since the exposed area of the side flap 4 is suppressed, the appearance of the packaging bag 1 is improved, and the design can be improved. Further, since the surface to which the flap 5 is attached is a flat surface only on the back surface portion 3, the flap 5 can be easily attached at the time of sealing, and the attached flap 5 is less likely to be peeled off.

(7)特に、上述したサイドフラップ4は、開口側の縁部4aが円弧状に形成されていることから、包装袋1の開口から物体を入れるときに、その物体がサイドフラップ4に引っ掛かりにくくなり、内容物を収容する作業性を向上させることができる。
(8)また、二つのサイドフラップ4は予め潰された状態で主面部2,3に貼付されていることから、サイドフラップ4を柔らかくすることができ、よりフレキシブルな包装袋1を実現できる。
(7) In particular, in the side flap 4 described above, since the edge portion 4a on the opening side is formed in an arc shape, when an object is inserted through the opening of the packaging bag 1, the object is less likely to be caught by the side flap 4. Therefore, the workability of accommodating the contents can be improved.
(8) Further, since the two side flaps 4 are attached to the main surface portions 2 and 3 in a pre-crushed state, the side flaps 4 can be softened and a more flexible packaging bag 1 can be realized.

(9)上述した包装袋1は軽量段ボールシートで形成されているため、一般的な段ボールシートで形成された包装袋と比べて、そもそも素材が柔らかく、フレキシブルに変形することができる。つまり、包装袋1によれば、軽量段ボールシートの柔らかさ,変形しやすさを、三種類の罫線11,12,13によって補助することができるため、より柔らかく,より変形しやすい包装袋1を提供することができる。 (9) Since the above-mentioned packaging bag 1 is made of a lightweight corrugated cardboard sheet, the material is soft and can be flexibly deformed as compared with a packaging bag formed of a general corrugated cardboard sheet. That is, according to the packaging bag 1, the softness and deformability of the lightweight corrugated cardboard sheet can be assisted by the three types of ruled lines 11, 12, and 13, so that the packaging bag 1 is softer and more easily deformed. Can be provided.

[3.フレキシブル罫線の変形例]
フレキシブル罫線10の構成は上述したものに限られない。ここで、主面部2,3に設けられるフレキシブル罫線10の変形例を図4(a)〜(e)に示す。なお、図4(a)〜(e)では、サイドフラップ4およびフラップ5を省略するとともに、二つの主面部2,3には同様のフレキシブル罫線10が設けられるものとして、主面部2,3を一つにまとめて示している。また、三種類の罫線11,12,13の延在方向D1,D2,D3が上記実施形態と同様であれば、上記実施形態と同一の符号を付す。
[3. Flexible ruled line transformation example]
The configuration of the flexible ruled line 10 is not limited to that described above. Here, a modified example of the flexible ruled line 10 provided on the main surface portions 2 and 3 is shown in FIGS. 4 (a) to 4 (e). In FIGS. 4A to 4E, the side flaps 4 and the flaps 5 are omitted, and the two main surface portions 2 and 3 are provided with the same flexible ruled lines 10. It is shown together in one. Further, if the extending directions D1, D2, and D3 of the three types of ruled lines 11, 12, and 13 are the same as those in the above embodiment, the same reference numerals as those in the above embodiment are attached.

〈第一変形例〉
図4(a)に示すフレキシブル罫線10Aは、三種類の罫線11,12,13が上記実施形態と同一の方向D1,D2,D3に延びている。ただし、図4(a)では、長さの異なる複数の第一の罫線11が異なる間隔で平行に配置されている。ここでは、主面部2,3の中央側に位置する第一の罫線11の方が、外側に位置する第一の罫線11よりも短くなっており、中央部における第一の罫線11同士の間隔が最も広くなっている。また、図4(a)では、第二の罫線12および第三の罫線13がいずれも各対角線に沿うとともに一直線に設けられているが、主面部2,3の中央部には設けられていない。言い換えると、主面部2,3の中央部にはフレキシブル罫線10が存在しない。
<First modification>
In the flexible ruled line 10A shown in FIG. 4A, three types of ruled lines 11, 12, and 13 extend in the same directions D1, D2, and D3 as in the above embodiment. However, in FIG. 4A, a plurality of first ruled lines 11 having different lengths are arranged in parallel at different intervals. Here, the first ruled line 11 located on the center side of the main surface portions 2 and 3 is shorter than the first ruled line 11 located on the outside, and the distance between the first ruled lines 11 in the central portion is shorter. Is the widest. Further, in FIG. 4A, both the second ruled line 12 and the third ruled line 13 are provided along each diagonal line and in a straight line, but are not provided in the central portions of the main surface portions 2 and 3. .. In other words, the flexible ruled line 10 does not exist in the central portion of the main surface portions 2 and 3.

このように、主面部2,3の中央部に罫線11,12,13が存在しない包装袋1であれば、例えば直方体や四角錐台のような形状の物体を収容するのに好適である。すなわち、中央部では主面部2,3が折れ曲がらずに内容物にフィットでき、その周囲の部分では、フレキシブル罫線10に沿って折れ曲がるため、これによっても内容物にフィットできる。したがって、図4(a)に示す変形例のフレキシブル罫線10Aを持つ包装袋1によっても、内容物の形状に沿ってフレキシブルに梱包できる。 As described above, the packaging bag 1 in which the ruled lines 11, 12, and 13 do not exist in the central portions of the main surface portions 2 and 3 is suitable for accommodating an object having a shape such as a rectangular parallelepiped or a quadrangular pyramid. That is, in the central portion, the main surface portions 2 and 3 can be fitted to the contents without bending, and in the peripheral portion, the main surface portions 2 and 3 are bent along the flexible ruled line 10, so that the contents can also be fitted. Therefore, the packaging bag 1 having the flexible ruled line 10A of the modified example shown in FIG. 4A can also be flexibly packed according to the shape of the contents.

〈第二変形例〉
図4(b)に示すフレキシブル罫線10Bでは、第二の罫線12′および第三の罫線13′が、主面部2,3の中央側で互いに交差する方向ではあるものの、主面部2,3の各対角線に沿う方向ではない。具体的には、第二の罫線12′の第二方向D2′は、左上の角と下側の辺の中心とを結ぶ仮想線に沿う方向であり、第三の罫線13′の第二方向D3′は、右上の角と下側の辺の中心とを結ぶ仮想線に沿う方向である。なお、第二の罫線12′および第三の罫線13′は主面部2,3の中央部には設けられておらず、主面部2,3の四隅のそれぞれに配置される。
<Second modification>
In the flexible ruled line 10B shown in FIG. 4B, although the second ruled line 12'and the third ruled line 13'are in the direction of intersecting each other on the central side of the main surface portions 2 and 3, the main surface portions 2 and 3 have Not along each diagonal. Specifically, the second direction D2'of the second ruled line 12'is the direction along the virtual line connecting the upper left corner and the center of the lower side, and the second direction of the third ruled line 13'. D3'is the direction along the virtual line connecting the upper right corner and the center of the lower side. The second ruled line 12'and the third ruled line 13'are not provided in the central portion of the main surface portions 2 and 3, but are arranged at the four corners of the main surface portions 2 and 3.

また、図4(b)では、図1および図4(a)に示したものよりも短い間隔で複数の第一の罫線11が平行に配置される。これにより、第一方向D1に沿ってより折れ曲がりやすくなっている。このようなフレキシブル罫線10Bを持つ包装袋1によっても、内容物の形状に沿ってフレキシブルに梱包できる。 Further, in FIG. 4B, a plurality of first ruled lines 11 are arranged in parallel at intervals shorter than those shown in FIGS. 1 and 4A. This makes it easier to bend along the first direction D1. The packaging bag 1 having such a flexible ruled line 10B can also be flexibly packed according to the shape of the contents.

〈第三変形例〉
図4(c)に示すフレキシブル罫線10Cでは、第一の罫線11が上記実施形態と同一の方向D1に延びており、第二の罫線12′および第三の罫線13′は図4(b)のものと同一の方向D2′,D3′に延びている。ただし、この変形例のフレキシブル罫線10Cは、主面部2,3の目方向Dfにおいて上下非対称となっている。言い換えると、これまで説明した図1,図4(a)および(b)のフレキシブル罫線10,10A,10Bはいずれも主面部2,3の中心点に関して点対称形状であったが、このフレキシブル罫線10Cは左右対称ではあるものの上下対称ではない。
<Third modification example>
In the flexible ruled line 10C shown in FIG. 4C, the first ruled line 11 extends in the same direction D1 as in the above embodiment, and the second ruled line 12'and the third ruled line 13'are shown in FIG. 4B. It extends in the same direction as D2'and D3'. However, the flexible ruled line 10C of this modified example is vertically asymmetric in the eye direction Df of the main surface portions 2 and 3. In other words, the flexible ruled lines 10, 10A, and 10B of FIGS. 1, 4 (a) and 4 (b) described so far all have a point-symmetrical shape with respect to the center points of the main surface portions 2, 3, but these flexible ruled lines Although 10C is symmetrical, it is not vertically symmetrical.

図4(c)の例では、第二の罫線12′および第三の罫線13′の本数が上下で異なる。ただし、組立状態で対向する表面部2および裏面部3の対向する部分には、同様に配置された罫線11,12′,13′が位置することが好ましい。例えば、主面部2,3同士の境界をなす罫線23に近い側に多くの罫線12′,13′を配置し、開口側に少ない罫線12′,13′を配置することで、包装袋1の底側で内容物をフレキシブルに梱包可能となる。したがって、このようなフレキシブル罫線10Cを持つ包装袋1によっても、内容物の形状に沿ってフレキシブルに梱包できる。 In the example of FIG. 4C, the number of the second ruled line 12'and the number of the third ruled line 13' are different between the upper and lower sides. However, it is preferable that the similarly arranged ruled lines 11, 12', 13'are located on the facing portions of the front surface portion 2 and the back surface portion 3 facing each other in the assembled state. For example, by arranging many ruled lines 12'and 13'on the side close to the ruled line 23 forming the boundary between the main surface portions 2 and 3, and arranging few ruled lines 12'and 13'on the opening side, the packaging bag 1 can be used. The contents can be flexibly packed on the bottom side. Therefore, even with the packaging bag 1 having such a flexible ruled line 10C, it is possible to flexibly pack the contents according to the shape of the contents.

〈第四変形例〉
図4(d)に示すフレキシブル罫線10Dでは、第二の罫線12′および第三の罫線13′は図4(b)のものと同一の方向D2′,D3′に延びているが、その配置が異なる。具体的には、第二の罫線12′が右上と左下とに設けられ、第三の罫線13′が左上と右下とに設けられる。このため、第二の罫線12′および第三の罫線13′は、主面部2,3の中央側で互いに交差しない。このようなフレキシブル罫線10Dを持つ包装袋1によっても、内容物の形状に沿ってフレキシブルに梱包できる。
<Fourth variant>
In the flexible ruled line 10D shown in FIG. 4 (d), the second ruled line 12'and the third ruled line 13'extend in the same directions D2'and D3'as those in FIG. Is different. Specifically, the second ruled line 12'is provided at the upper right and the lower left, and the third ruled line 13'is provided at the upper left and the lower right. Therefore, the second ruled line 12'and the third ruled line 13'do not intersect each other on the central side of the main surface portions 2 and 3. The packaging bag 1 having such a flexible ruled line 10D can also be flexibly packed according to the shape of the contents.

〈その他〉
上記の四つの変形例のフレキシブル罫線10A〜10Dを組み合わせてもよい。例えば、図4(b)に示した第一の罫線11と図4(c)に示した第二の罫線12′および第三の罫線13′とを組み合わせてもよい。また、主面部2,3の目方向Dfの一側部に第二の罫線12′を複数並設し、目方向Dfの他側部に第三の罫線13′を複数並設してもよいし、第二の罫線12′と第三の罫線13′とを交互に配置してもよい。また、第三変形例において、開口側の罫線12′,13′の本数を罫線23側の罫線12′,13′の本数よりも多くしてもよい。
<Others>
The flexible ruled lines 10A to 10D of the above four modifications may be combined. For example, the first ruled line 11 shown in FIG. 4B and the second ruled line 12'and the third ruled line 13'shown in FIG. 4C may be combined. Further, a plurality of second ruled lines 12'may be arranged side by side on one side of the main surface portions 2 and 3 in the eye direction Df, and a plurality of third ruled lines 13' may be arranged side by side on the other side portion of the eye direction Df. Then, the second ruled line 12'and the third ruled line 13'may be arranged alternately. Further, in the third modification, the number of ruled lines 12'and 13'on the opening side may be larger than the number of ruled lines 12' and 13'on the ruled line 23 side.

上記実施形態および各変形例では、第一の罫線11が第一方向D1に延設されているが、第一の罫線11が目方向Dfに垂直でなくてもよく、例えば、目方向Dfに対して80°や110°に傾く方向に延設されてもよい。なお、三種類の罫線11,12,13等は直線に限られず、曲線や波線であってもよい。また、フレキシブル罫線が各主面部2,3において部分的に配置されていてもよいし、中心線Cに関し左右非対称に設けられてもよい。なお、図4(e)に示すように、第二の罫線12,第三の罫線13については、第一の罫線11と重なるように連続して設けることも可能である。 In the above embodiment and each modification, the first ruled line 11 extends in the first direction D1, but the first ruled line 11 does not have to be perpendicular to the eye direction Df, for example, in the eye direction Df. On the other hand, it may be extended in a direction inclined at 80 ° or 110 °. The three types of ruled lines 11, 12, 13, and the like are not limited to straight lines, but may be curved lines or wavy lines. Further, the flexible ruled lines may be partially arranged on the main surface portions 2 and 3, or may be provided asymmetrically with respect to the center line C. As shown in FIG. 4E, the second ruled line 12 and the third ruled line 13 can be continuously provided so as to overlap the first ruled line 11.

[4.その他の変形例]
上述した包装袋1は一例であって、上述した構成に限られない。たとえば図5に示すように、主面部2,3の目方向Dfに延びる辺が、目方向Dfと直交する第一方向D1に延びる辺よりも長い矩形状に形成された包装袋1′(包装袋用シート9′)に対し、上述したフレキシブル罫線10,10A〜10Dを適用してもよい。この包装袋1′は、主面部2,3の縦横比が異なる点と第一の罫線11の本数が多い点とを除いて、図1に示す包装袋1と同様に構成されている。このような包装袋1′であっても、上述した実施形態と同様の作用効果を得ることができる。
[4. Other variants]
The above-mentioned packaging bag 1 is an example, and is not limited to the above-mentioned configuration. For example, as shown in FIG. 5, a packaging bag 1'(packaging) in which the side extending in the eye direction Df of the main surface portions 2 and 3 is longer than the side extending in the first direction D1 orthogonal to the eye direction Df. The flexible ruled lines 10, 10A to 10D described above may be applied to the bag sheet 9'). The packaging bag 1'is configured in the same manner as the packaging bag 1 shown in FIG. 1, except that the aspect ratios of the main surface portions 2 and 3 are different and the number of the first ruled lines 11 is large. Even with such a packaging bag 1', the same effects as those of the above-described embodiment can be obtained.

また、表面部2に設けられるフレキシブル罫線と裏面部3に設けられるフレキシブル罫線とが異なる構成であってもよい。例えば、表面部2には図1に示すフレキシブル罫線10を適用し、裏面部3には図4(a)に示すフレキシブル罫線10Aを適用した包装袋であってもよい。なお、フレキシブル罫線10等は、主面部のどちらかを平面に保ちたい場合等、必要に応じて表面部2又は裏面部3のいずれか片方のみに設けることも可能である。また、たとえば図6に示すように、フレキシブル罫線10Eが、三種類の罫線11′,12′,13′に加えて第四の罫線14を含んでもよい。 Further, the flexible ruled line provided on the front surface portion 2 and the flexible ruled line provided on the back surface portion 3 may have different configurations. For example, a packaging bag to which the flexible ruled line 10 shown in FIG. 1 is applied to the front surface portion 2 and the flexible ruled line 10A shown in FIG. 4A is applied to the back surface portion 3 may be used. The flexible ruled line 10 or the like can be provided on only one of the front surface portion 2 and the back surface portion 3 as necessary, such as when it is desired to keep either of the main surface portions flat. Further, for example, as shown in FIG. 6, the flexible ruled line 10E may include a fourth ruled line 14 in addition to the three types of ruled lines 11', 12', and 13'.

図6に示す第四の罫線14は渦巻き形状になっており、目方向Dfとは異なる方向に延びる。このように、主面部2の中央部に渦巻き形状の罫線14を含んだ包装袋1″(包装袋用シート9″)であれば、筒状体(柱状体)や球状の物体をフレキシブルに梱包することが可能となる。なお、図6のフレキシブル罫線10Eでは、第一の罫線11′が第一方向D1に沿う波線に形成されている。また、第二の罫線12′が表面部2の左側の領域に複数配置され、第三の罫線13′が表面部2の右側の領域に複数配置されている。また、フレキシブル罫線に、目方向Dfに沿う罫線が含まれていてもよい。すなわち、目方向Df以外の三方向に延びる三種類の罫線に加え、目方向Dfに延びる罫線がフレキシブル罫線の一部として設けられていてもよい。 The fourth ruled line 14 shown in FIG. 6 has a spiral shape and extends in a direction different from the eye direction Df. In this way, if the packaging bag 1 ″ (packaging bag sheet 9 ″) includes the spiral ruled line 14 in the central portion of the main surface portion 2, a tubular body (columnar body) or a spherical object can be flexibly packed. It becomes possible to do. In the flexible ruled line 10E of FIG. 6, the first ruled line 11'is formed as a wavy line along the first direction D1. Further, a plurality of second ruled lines 12'are arranged in the area on the left side of the surface portion 2, and a plurality of third ruled lines 13'are arranged in the region on the right side of the surface portion 2. Further, the flexible ruled line may include a ruled line along the eye direction Df. That is, in addition to the three types of ruled lines extending in the three directions other than the eye direction Df, the ruled lines extending in the eye direction Df may be provided as a part of the flexible ruled lines.

上述した包装袋1は、サイドフラップ4が内貼りされるものであったが、サイドフラップ4が包装袋1の外側を向く面(外面)に貼付されてもよい。このようなサイドフラップ4が包装袋1の外側に貼付された仕様を「外貼り」という。サイドフラップ4が外貼りされる場合、内貼りの構成と比較して、サイドフラップ4が内側に存在しないため、包装袋1の開口から物体を挿入しやすい。また、包装袋1の主面部2,3の左右それぞれを、二つのサイドフラップ4によって外側から挟み込む構成となるため、包装袋1の耐久性を向上させることができる。なお、サイドフラップ4が外貼りの場合には、開口側の端部4aを円弧状にする必要はない。 In the above-mentioned packaging bag 1, the side flap 4 is internally attached, but the side flap 4 may be attached to the outward facing surface (outer surface) of the packaging bag 1. The specification in which such a side flap 4 is attached to the outside of the packaging bag 1 is referred to as "outer attachment". When the side flap 4 is attached to the outside, it is easy to insert an object through the opening of the packaging bag 1 because the side flap 4 does not exist inside as compared with the configuration of the inside attachment. Further, since the left and right sides of the main surface portions 2 and 3 of the packaging bag 1 are sandwiched from the outside by the two side flaps 4, the durability of the packaging bag 1 can be improved. When the side flap 4 is externally attached, it is not necessary to make the end portion 4a on the opening side arcuate.

包装袋1を開封するための破断構造30は上述したものに限られない。例えば、破断構造としてジッパー構造が採用されてもよいし、円弧部32が省略されてもよい。また、破断構造30の位置は罫線24上に限られず、罫線23や罫線25上であってもよいし、フラップ5や主面部2,3上であってもよい。 The breaking structure 30 for opening the packaging bag 1 is not limited to the one described above. For example, a zipper structure may be adopted as the breaking structure, or the arc portion 32 may be omitted. Further, the position of the breaking structure 30 is not limited to the ruled line 24, and may be on the ruled line 23 or the ruled line 25, or on the flap 5 or the main surface portions 2 and 3.

なお、サイドフラップ4の位置は表面部2の左右でなくてもよく、裏面部3の左右であってもよいし、表面部2の左右一方および裏面部3の左右他方であってもよい。すなわち、包装袋が中心線Cに関し左右対称形状でなくてもよい。また、サイドフラップ4の開口側の端部4aが直線状であってもよい。フラップ5の位置も表面部2の開口側に限られず、裏面部3の開口側であってもよい。 The positions of the side flaps 4 may not be left and right of the front surface portion 2, may be left and right of the back surface portion 3, or may be one of the left and right sides of the front surface portion 2 and the left and right sides of the back surface portion 3. That is, the packaging bag does not have to have a symmetrical shape with respect to the center line C. Further, the end portion 4a on the opening side of the side flap 4 may be linear. The position of the flap 5 is not limited to the opening side of the front surface portion 2, and may be the opening side of the back surface portion 3.

上述した包装袋1は、軽量段ボールシートで形成される場合を例示したが、包装袋が一般的な段ボールシートで形成されてもよい。また、段ボールシートは、シングルフルートの段ボールに限られず、いわゆる「複両面段ボール」や「複々両面段ボール」であってもよいし、片面段ボールシートであってもよい。 Although the above-mentioned packaging bag 1 is illustrated in the case of being formed of a lightweight corrugated cardboard sheet, the packaging bag may be formed of a general corrugated cardboard sheet. Further, the corrugated cardboard sheet is not limited to the single flute corrugated cardboard, and may be a so-called "double-sided corrugated cardboard", "double-sided double-sided corrugated cardboard", or a single-sided corrugated cardboard sheet.

1,1′,1″ 包装袋
2 表面部(主面部)
3 裏面部(主面部)
4 サイドフラップ
4a 開口側の縁部
4b 裏面部側の縁部
5 フラップ
6 中芯
9,9′,9″ 包装袋用シート
10,10A,10B,10C,10D,10E フレキシブル罫線
11,11′ 第一の罫線
12,12′ 第二の罫線
13,13′ 第三の罫線
14 第四の罫線
23,24,25 罫線(通常罫線)
30 破断構造
31 直線部
32 円弧部
C 中心線
Df 目方向(中芯のフルートが延在する方向)
D1,D1′ 第一方向
D2,D2′ 第二方向
D3,D3′ 第三方向
1,1', 1 "Packaging bag 2 Surface part (main surface part)
3 Back surface (main surface)
4 Side flap 4a Opening side edge 4b Back side edge 5 Flap 6 Core 9, 9', 9 "Packing bag sheet 10, 10A, 10B, 10C, 10D, 10E Flexible ruled line 11, 11'No. One ruled line 12, 12'Second ruled line 13, 13'Third ruled line 14 Fourth ruled line 23, 24, 25 Ruled line (normal ruled line)
30 Break structure 31 Straight line part 32 Arc part C Center line
Df direction (direction in which the core flute extends)
D1, D1'first direction
D2, D2'second direction
D3, D3'Third direction

Claims (11)

互いに対面する二つの主面部と、前記二つの主面部の側縁同士を接合する二つのサイドフラップと、前記二つの主面部で形成される開口を封緘するフラップと、を具備するとともに段ボールシートで形成された包装袋であって、
少なくとも一つの前記主面部において、前記主面部と各々の前記サイドフラップおよび前記フラップとの各連設部および前記主面部同士の連設部に位置する通常罫線とは別に設けられたフレキシブル罫線を備え、
前記フレキシブル罫線は、前記段ボールシートの中芯のフルートが延在する方向とは異なる三方向であって互いに異なる方向に延びる三種類の罫線を含む
ことを特徴とする、包装袋。
It is provided with two main surface portions facing each other, two side flaps for joining the side edges of the two main surface portions, and a flap for sealing the opening formed by the two main surface portions, and is provided with a corrugated cardboard sheet. It is a formed packaging bag,
At least one main surface portion includes a flexible ruled line provided separately from the normal ruled line located in each continuous portion between the main surface portion and each of the side flaps and the flaps and the continuous portion between the main surface portions. ,
The flexible ruled line is a packaging bag comprising three types of ruled lines extending in three directions different from the direction in which the flute of the core of the corrugated cardboard sheet extends and extending in different directions from each other.
第一の前記罫線は、前記フルートが延在する方向に対し垂直な方向に延設され、
第二の前記罫線および第三の前記罫線は、前記主面部の中央側で互いに交差する方向に延設される
ことを特徴とする、請求項1記載の包装袋。
The first ruled line extends in a direction perpendicular to the direction in which the flute extends.
The packaging bag according to claim 1, wherein the second ruled line and the third ruled line extend in a direction intersecting each other on the central side of the main surface portion.
前記第二の罫線および前記第三の罫線は、前記主面部の各対角線に沿う方向に延設される
ことを特徴とする、請求項2記載の包装袋。
The packaging bag according to claim 2, wherein the second ruled line and the third ruled line extend in a direction along each diagonal line of the main surface portion.
複数の前記第一の罫線が、互いに平行に設けられている
ことを特徴とする、請求項2又は3記載の包装袋。
The packaging bag according to claim 2 or 3, wherein a plurality of the first ruled lines are provided in parallel with each other.
前記フレキシブル罫線には、前記フルートが延在する方向に延びる罫線は含まれない
ことを特徴とする、請求項1〜4のいずれか1項に記載の包装袋。
The packaging bag according to any one of claims 1 to 4, wherein the flexible ruled line does not include a ruled line extending in a direction in which the flute extends.
前記二つのサイドフラップは、前記包装袋の内側を向く面に貼付されている
ことを特徴とする、請求項1〜5のいずれか1項に記載の包装袋。
The packaging bag according to any one of claims 1 to 5, wherein the two side flaps are attached to a surface facing the inside of the packaging bag.
前記二つのサイドフラップは、前記開口側の縁部が円弧状である
ことを特徴とする、請求項6記載の包装袋。
The packaging bag according to claim 6, wherein the two side flaps have an arcuate edge on the opening side.
前記二つのサイドフラップは、前記包装袋の外側を向く面に貼付されている
ことを特徴とする、請求項1〜5のいずれか1項に記載の包装袋。
The packaging bag according to any one of claims 1 to 5, wherein the two side flaps are attached to a surface facing the outside of the packaging bag.
前記二つのサイドフラップは、予め潰された状態で前記主面部に貼付されている
ことを特徴とする、請求項1〜8のいずれか1項に記載の包装袋。
The packaging bag according to any one of claims 1 to 8, wherein the two side flaps are attached to the main surface portion in a state of being crushed in advance.
前記段ボールシートは、
前記中芯の両側に対してライナを貼合した両面段ボールシートであり、
JIS Z 0203に準拠して温度23[℃]および湿度50[%]の温湿度条件で24時間以上の前処理が施された常態において、前記ライナの坪量が90[g/m]以下であり、前記中芯の坪量が150[g/m]以下である
ことを特徴とする、請求項1〜9のいずれか1項に記載の包装袋。
The corrugated cardboard sheet
A double-sided corrugated cardboard sheet in which liners are attached to both sides of the core.
The liner basis weight is 90 [g / m 2 ] or less under normal conditions where pretreatment is performed for 24 hours or more under temperature and humidity conditions of temperature 23 [° C.] and humidity 50 [%] in accordance with JIS Z 0203. The packaging bag according to any one of claims 1 to 9, wherein the core has a basis weight of 150 [g / m 2] or less.
連設された二つの主面部と、前記二つの主面部の側縁同士を接合するための二つのサイドフラップと、前記二つの主面部で形成される開口を封緘するためのフラップと、を具備し、段ボールシートからなる包装袋用シートであって、
少なくとも一つの前記主面部において、前記主面部と各々の前記サイドフラップおよび前記フラップとの各連設部および前記主面部同士の連設部に位置する通常罫線とは別に設けられたフレキシブル罫線を備え、
前記フレキシブル罫線は、前記段ボールシートの中芯のフルートが延在する方向とは異なる三方向であって互いに異なる方向に延びる三種類の罫線を含む
ことを特徴とする、包装袋用シート。
It is provided with two consecutive main surface portions, two side flaps for joining the side edges of the two main surface portions, and a flap for sealing the opening formed by the two main surface portions. However, it is a packaging bag sheet made of corrugated cardboard.
At least one main surface portion includes a flexible ruled line provided separately from the normal ruled line located in each continuous portion between the main surface portion and each of the side flaps and the flaps and the continuous portion between the main surface portions. ,
The flexible ruled line is a sheet for a packaging bag, comprising three types of ruled lines extending in three directions different from the direction in which the flute of the core of the corrugated cardboard sheet extends and extending in different directions from each other.
JP2019234383A 2019-11-29 2019-12-25 Packaging bags and sheets for packaging bags Active JP7380192B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6435841U (en) * 1987-08-28 1989-03-03
JP2006143221A (en) * 2004-11-16 2006-06-08 Oji Paper Co Ltd Corrugated board sheet for glass slip sheet
JP3160366U (en) * 2010-03-09 2010-06-24 フジックス株式会社 envelope
JP2012046217A (en) * 2010-08-26 2012-03-08 Toppan Printing Co Ltd Envelope
JP3195833U (en) * 2014-11-25 2015-02-05 大王パッケージ株式会社 Cardboard envelopes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6435841U (en) * 1987-08-28 1989-03-03
JP2006143221A (en) * 2004-11-16 2006-06-08 Oji Paper Co Ltd Corrugated board sheet for glass slip sheet
JP3160366U (en) * 2010-03-09 2010-06-24 フジックス株式会社 envelope
JP2012046217A (en) * 2010-08-26 2012-03-08 Toppan Printing Co Ltd Envelope
JP3195833U (en) * 2014-11-25 2015-02-05 大王パッケージ株式会社 Cardboard envelopes

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