JP6736598B2 - Pulp mold cushioning material - Google Patents

Pulp mold cushioning material Download PDF

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Publication number
JP6736598B2
JP6736598B2 JP2018076808A JP2018076808A JP6736598B2 JP 6736598 B2 JP6736598 B2 JP 6736598B2 JP 2018076808 A JP2018076808 A JP 2018076808A JP 2018076808 A JP2018076808 A JP 2018076808A JP 6736598 B2 JP6736598 B2 JP 6736598B2
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wall
wall portion
cushioning material
main
edge
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JP2019182499A (en
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博文 菅野
博文 菅野
孝紀 野田
孝紀 野田
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Sony Interactive Entertainment Inc
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Sony Interactive Entertainment Inc
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Priority to JP2018076808A priority Critical patent/JP6736598B2/en
Priority to EP19166981.1A priority patent/EP3552985A3/en
Priority to CN201920456955.6U priority patent/CN210972276U/en
Publication of JP2019182499A publication Critical patent/JP2019182499A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/50—Internal supporting or protecting elements for contents
    • B65D5/5028—Elements formed separately from the container body
    • B65D5/5035—Paper elements
    • B65D5/5069—Capping elements, i.e. elements which are located onto one or more ends of the contents, before the contents are inserted into the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/053—Corner, edge or end protectors
    • B65D81/058—Protectors contacting five surfaces of the packaged article, e.g. five-sided end protectors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)

Description

本開示はパルプモールド緩衝材に関する。 The present disclosure relates to pulp mold cushioning.

電子機器などの商品の輸送において、商品を保護するための緩衝材が利用される。商品は、その外側に緩衝材が装着された状態で輸送用の収容箱に入れられる。緩衝材として、紙を原材料とする成形品（パルプモールド緩衝材）が利用されることがある。特開２００１−１４６７００号公報（特許文献１）に示されるように、従来のパルプモールド緩衝材は、その縁に、緩衝材の外側に向かって広がる部分を有している。すなわち、従来のパルプモールド緩衝材は、その縁に、フランジを有している。このようなフランジは、緩衝材の剛性確保に寄与する。 A cushioning material for protecting products is used in the transportation of products such as electronic devices. The product is put in a storage box for transportation with a cushioning material attached to the outside thereof. A molded product (pulp mold cushioning material) made of paper as a raw material may be used as the cushioning material. As shown in Japanese Patent Application Laid-Open No. 2001-146700 (Patent Document 1), the conventional pulp mold cushioning material has a portion that widens toward the outside of the cushioning material at the edge thereof. That is, the conventional pulp mold cushioning material has a flange at its edge. Such a flange contributes to ensuring the rigidity of the cushioning material.

特開２００１−１４６７００号公報JP, 2001-146700, A

ところが、緩衝材の縁にフランジが形成されると、フランジの幅だけ緩衝材のサイズが大きくなるので、大きな収容箱を利用する必要が生じる。このことは、商品の輸送効率の低下につながる。 However, when the flange is formed on the edge of the cushioning material, the size of the cushioning material increases by the width of the flange, so that it is necessary to use a large storage box. This leads to a reduction in the transportation efficiency of goods.

また、商品の外形によっては、商品と緩衝材との間に大きな力が作用する可能性がある。 Further, depending on the outer shape of the product, a large force may act between the product and the cushioning material.

本開示の第１の目的は、剛性低下を抑えながら輸送効率を向上できるパルプモールド緩衝材を提案することにある。 A first object of the present disclosure is to propose a pulp mold cushioning material that can improve transport efficiency while suppressing a decrease in rigidity.

本開示の第２の目的は、パルプモールド緩衝材と商品との間に大きな力が作用すること防止することにある。 A second object of the present disclosure is to prevent a large force from acting between the pulp mold cushioning material and the product.

本開示で提案するパルプモールド緩衝材は、被収容物が内側に配置される収容空間を規定し第１の方向に開いている開口を有している複数の主壁を、有している。前記複数の主壁は第１主壁を有している。前記第１主壁は、第１外壁部と前記第１外壁部よりも前記収容空間の内側に張り出している第１内壁部と有し、前記第１外壁部と前記第１内壁部とが前記第１の方向に対して直交する第２の方向で並んでおり。前記第１主壁は、前記第１の方向での前記第１主壁の端部に、前記第２の方向で伸びている縁部を有し、前記第１主壁は前記縁部にフランジを有していない。このパルプモールド緩衝材によると、パルプモールド緩衝材の剛性低下を抑えることができ、また商品の輸送効率を向上できる。 The pulp mold cushioning material proposed in the present disclosure has a plurality of main walls that define an accommodation space in which an object to be accommodated is arranged and that has an opening that opens in a first direction. The plurality of main walls have a first main wall. The first main wall includes a first outer wall portion and a first inner wall portion projecting inward of the accommodation space with respect to the first outer wall portion, and the first outer wall portion and the first inner wall portion are the above-mentioned. They are arranged in a second direction orthogonal to the first direction. The first main wall has an edge extending in the second direction at an end of the first main wall in the first direction, and the first main wall is flanged at the edge. Does not have. According to this pulp mold cushioning material, it is possible to suppress a decrease in the rigidity of the pulp mold cushioning material, and it is possible to improve the transportation efficiency of goods.

本開示で提案するパルプモールド緩衝材の別の例は、被収容物が内側に配置される収容空間を規定し且つ第１の方向に開いている開口を有している複数の主壁を、有しているパルプモールド緩衝材である。前記複数の主壁は第１主壁を有している。前記第１主壁は、第１外壁部と、前記第１外壁部の位置よりも前記収容空間の内側に張り出している第１内壁部を有している少なくとも２つの第１凸部と、を有している。前記第１外壁部は、前記少なくとも２つの前記第１凸部の間に位置し、前記第１の方向とは直交する第２の方向において前記少なくとも２つの前記第１凸部と並んでおり、前記第１外壁部は、前記第１の方向での前記外壁部の端部に位置し且つ前記開口の縁の一部である第１縁部を有し、前記少なくとも２つの第１凸部のそれぞれは、前記第１の方向での前記第１内壁部の端部に位置している端壁部を有し、前記少なくとも２つの前記第１凸部の前記端壁部は、前記第１外壁部の前記第１縁部を介して互いに繋がっている。このパルプモールド緩衝材によると、パルプモールド緩衝材の剛性低下を抑えることができ、また商品の輸送効率を向上できる。 Another example of the pulp mold cushioning material proposed in the present disclosure defines a plurality of main walls that define an accommodation space in which an object to be accommodated is arranged and that has an opening that opens in a first direction, This is a pulp mold cushioning material. The plurality of main walls have a first main wall. The first main wall includes a first outer wall portion and at least two first convex portions having a first inner wall portion that projects inward of the accommodation space from the position of the first outer wall portion. Have The first outer wall portion is located between the at least two first convex portions, and is aligned with the at least two first convex portions in a second direction orthogonal to the first direction, The first outer wall portion has a first edge portion that is located at an end portion of the outer wall portion in the first direction and is a part of an edge of the opening, and the at least two first convex portions Each has an end wall located at an end of the first inner wall in the first direction, the end wall of the at least two first protrusions being the first outer wall. Are connected to each other via the first edge of the section. According to this pulp mold cushioning material, it is possible to suppress a decrease in the rigidity of the pulp mold cushioning material, and it is possible to improve the transportation efficiency of goods.

本開示で提案する別のパルプモールド緩衝材は、第１の方向に開口している、被収容物が内側に配置される収容空間と、前記収容空間を規定する複数の主壁と、を有している。前記複数の主壁は、第１主壁と、前記第１主壁に対して前記第１の方向とは反対方向に位置し、前記第１主壁に繋がっている第２主壁とを有している。前記第１主壁は、第１外壁部と、前記第１外壁部よりも前記収容空間の内側に張り出している第１内壁部と有し、前記第１外壁部と前記第１内壁部とが前記第１の方向に対して直交する第２の方向で並んでいる。前記第２主壁は、第２外壁部と、前記第２外壁部よりも前記収容空間の内側に張り出している第２内壁部と有し、前記第２外壁部と前記第２内壁部とが前記第２の方向で並んでいる。前記第１内壁部と前記第２内壁部との接続部分に、凹部又は孔が形成されている。このパルプモールド緩衝材によると、パルプモールド緩衝材と商品との間に大きな力が作用すること防止できる。 Another pulp mold cushioning material proposed in the present disclosure has a storage space that is opened in the first direction and in which an object to be stored is arranged, and a plurality of main walls that define the storage space. doing. The plurality of main walls have a first main wall and a second main wall that is located in a direction opposite to the first direction with respect to the first main wall and is connected to the first main wall. doing. The first main wall has a first outer wall portion and a first inner wall portion projecting to the inside of the accommodation space rather than the first outer wall portion, and the first outer wall portion and the first inner wall portion are They are arranged in a second direction orthogonal to the first direction. The second main wall has a second outer wall portion and a second inner wall portion projecting to the inside of the accommodation space rather than the second outer wall portion, and the second outer wall portion and the second inner wall portion are They are lined up in the second direction. A recess or a hole is formed in a connecting portion between the first inner wall portion and the second inner wall portion. This pulp mold cushioning material can prevent a large force from acting between the pulp mold cushioning material and the product.

本開示で提案するパルプモールド緩衝材の例を示す斜視図である。It is a perspective view which shows the example of the pulp mold cushioning material proposed by this indication. 図１に示す矢印ＩＩの示す方向でパルプモールド緩衝材を臨む正面図である。It is a front view which faces a pulp mold cushioning material in the direction shown by the arrow II shown in FIG. 図２に示すＩＩＩ−ＩＩＩ線での断面図である。It is sectional drawing in the III-III line shown in FIG. 図２に示すＩＶａ−ＩＶａ線での断面図である。It is sectional drawing in the IVa-IVa line shown in FIG. 図２に示すＩＶｂ−ＩＶｂ線での断面図である。It is sectional drawing in the IVb-IVb line shown in FIG. 図２に示すＩＶｃ−ＩＶｃ線での断面図である。It is sectional drawing in the IVc-IVc line shown in FIG. 図４Ｂに示す領域Ｖの拡大図である。FIG. 5 is an enlarged view of a region V shown in FIG. 4B. 図１の拡大図である。It is an enlarged view of FIG. 図６Ａで示す部分を別の角度から臨む斜視図である。FIG. 6B is a perspective view of the portion shown in FIG. 6A viewed from another angle. 図２に示すＶＩＩ−ＶＩＩ線での断面図である。It is sectional drawing in the VII-VII line shown in FIG.

以下、本開示で提案するパルプモールド緩衝材の実施形態の例について説明する。本明細書では、図１乃至図７を参照しながら、実施形態の一例としてパルプモールド緩衝材１について説明する。以下では、パルプモールド緩衝材１を単に緩衝材１と記載する。 Hereinafter, an example of an embodiment of the pulp mold cushioning material proposed in the present disclosure will be described. In the present specification, a pulp mold cushioning material 1 will be described as an example of an embodiment with reference to FIGS. 1 to 7. Hereinafter, the pulp mold cushioning material 1 will be simply referred to as the cushioning material 1.

以下の説明においては、図１等に示すＹ１、Ｙ２方向をそれぞれ前方及び後方と称し、Ｘ１、Ｘ２方向をそれぞれ右方及び左方と称し、Ｚ１、Ｚ２方向を上方及び下方と称する。これらの方向は、緩衝材１が有する各部の相対的な位置関係を示すために使用されており、緩衝材１の使用時の姿勢を規定するものではない。 In the following description, the Y1 and Y2 directions shown in FIG. 1 and the like are referred to as front and rear, the X1 and X2 directions are referred to as right and left, respectively, and the Z1 and Z2 directions are referred to as upper and lower. These directions are used to indicate the relative positional relationship between the respective parts of the cushioning material 1, and do not prescribe the posture of the cushioning material 1 during use.

図１に示すように、緩衝材１は上方に開口した箱状であり、緩衝材１の使用時、電子機器などの被収容物Ｐ（図３参照）は緩衝材１の内側に配置される。すなわち、緩衝材１は、その内側に被収容物Ｐが内側に配置される収容空間を有している。緩衝材１の使用時、１つの被収容物に、例えば互いに向き合う２つの緩衝材１が使用される。被収容物Ｐは、その外側に緩衝材１が嵌められた状態で収容箱に入れられる。 As shown in FIG. 1, the cushioning material 1 is in the shape of a box with an upward opening, and when the cushioning material 1 is used, an object P (see FIG. 3) such as an electronic device is arranged inside the cushioning material 1. .. That is, the cushioning material 1 has a storage space in which the object P is arranged inside. When the cushioning material 1 is used, for example, two cushioning materials 1 facing each other are used for one contained object. The to-be-accommodated object P is put in the accommodation box with the cushioning material 1 fitted on the outside thereof.

緩衝材１は収容空間を規定している複数の主壁を有している。緩衝材１は、主壁として、前壁１０Ａと、後壁１０Ｂと、右壁２０Ａと、左壁２０Ｂと、底壁３０とを有している。右壁２０Ａは、壁１０Ａ、１０Ｂの右側に位置し、壁１０Ａ、１０Ｂの端部に接続している。同様に、左壁２０Ｂは、壁１０Ａ、１０Ｂの左側に位置し、壁１０Ａ、１０Ｂの端部に接続している。底壁３０は、壁１０Ａ、１０Ｂ、２０Ａ、２０Ｂの下部に位置している。 The cushioning material 1 has a plurality of main walls that define the accommodation space. The cushioning material 1 has a front wall 10A, a rear wall 10B, a right wall 20A, a left wall 20B, and a bottom wall 30 as main walls. The right wall 20A is located on the right side of the walls 10A and 10B and is connected to the ends of the walls 10A and 10B. Similarly, the left wall 20B is located on the left side of the walls 10A and 10B and is connected to the ends of the walls 10A and 10B. The bottom wall 30 is located below the walls 10A, 10B, 20A, 20B.

緩衝材１は、紙（例えば、古紙）を原材料とする成形品であり、壁１０Ａ、１０Ｂ、２０Ａ、２０Ｂ、３０は一体的に成形されている。すなわち、緩衝材１は、壁１０Ａ、１０Ｂ、２０Ａ、２０Ｂ、３０の折曲げによって形成されたものではなく、また、壁１０Ａ、１０Ｂ、２０Ａ、２０Ｂ、３０への接着材の塗布によって相互に接続されたものではない。 The cushioning material 1 is a molded product made of paper (for example, waste paper) as a raw material, and the walls 10A, 10B, 20A, 20B, 30 are integrally molded. That is, the cushioning material 1 is not formed by bending the walls 10A, 10B, 20A, 20B, 30 and is connected to each other by applying an adhesive material to the walls 10A, 10B, 20A, 20B, 30. Not what was done.

緩衝材の形状は、緩衝材１の例に限られない。緩衝材１は、壁１０Ａ、１０Ｂ、２０Ａ、２０Ｂ、３０のうち一部だけを有してもよい。例えば、緩衝材１は、前壁１０Ａ、底壁３０、及び後壁１０Ｂだけを有し、壁２０Ａ、２０Ｂを有していなくてもよい。別の例として、緩衝材１は、前壁１０Ａ、右壁２０Ａ、及び底壁３０だけを有してもよい。このような緩衝材１は、３つの方向（上方、前方、左方）に開口しており、被収容物Ｐの角に装着され得る。緩衝材１では、前壁１０Ａと後壁１０Ｂの左右方向での長さは、右壁２０Ａと左壁２０Ｂの前後方向での長さよりも大きい。緩衝材１とは異なり、前壁１０Ａと後壁１０Ｂの左右方向での長さは、右壁２０Ａと左壁２０Ｂの前後方向での長さと同じでもよいし、小さくてもよい。 The shape of the cushioning material is not limited to the example of the cushioning material 1. The cushioning material 1 may have only a part of the walls 10A, 10B, 20A, 20B, 30. For example, the cushioning material 1 may have only the front wall 10A, the bottom wall 30, and the rear wall 10B, and may not have the walls 20A and 20B. As another example, the cushioning material 1 may have only the front wall 10A, the right wall 20A, and the bottom wall 30. Such a cushioning material 1 is opened in three directions (upward, frontward, leftward), and can be attached to the corner of the housed object P. In the cushioning material 1, the length of the front wall 10A and the rear wall 10B in the left-right direction is larger than the length of the right wall 20A and the left wall 20B in the front-rear direction. Unlike the cushioning material 1, the lengths of the front wall 10A and the rear wall 10B in the left-right direction may be the same as or smaller than the lengths of the right wall 20A and the left wall 20B in the front-rear direction.

図１に示すように、前壁１０Ａには、収容空間の内側に向かって張り出している（後方に向かって張り出している）複数の凸部１１、１２が形成されている。第１の凸部１１は、収容空間の内側に向いており且つ底壁３０から上側に伸びている第１凸部１１の内壁部１１ａ（図４Ａ参照）を有している。第２の凸部１２は、収容空間の内側に向いており且つ底壁３０から上側に伸びている第２凸部１２の内壁部１２ａ（図４Ｃ参照）を有している。凸部１１、１２は左右方向において間隔をあけて並んでおり、前壁１０Ａは、隣り合う２つの凸部１１、１２の間に、底壁３０から上側に伸びている外壁部１３（図４Ｂ参照）を有している。言い換えれば、隣り合う２つの２つの内壁部１１ａ、１２ａの間（すなわち、隣り合う２つの内壁部１１ａの間、及び隣り合う内壁部１１ａと内壁部１２ａの間）に、１つの外壁部１３が形成されている。内壁部１１ａ、１２ａは、外壁部１３よりも収容空間の内側に張り出している。すなわち、前壁１０Ａに形成されている内壁部１１ａ、１２ａは、外壁部１３よりも後方に位置している。 As shown in FIG. 1, the front wall 10A is formed with a plurality of convex portions 11 and 12 that project toward the inside of the accommodation space (project toward the rear). The 1st convex part 11 has the inner wall part 11a (refer FIG. 4A) of the 1st convex part 11 which faces the inner side of an accommodation space, and has extended upwards from the bottom wall 30. The 2nd convex part 12 has the inner wall part 12a (refer FIG. 4C) of the 2nd convex part 12 which faces the inner side of accommodation space, and has extended upwards from the bottom wall 30. The convex portions 11 and 12 are lined up with a space in the left-right direction, and the front wall 10A has an outer wall portion 13 that extends upward from the bottom wall 30 between two adjacent convex portions 11 and 12 (FIG. 4B). See). In other words, one outer wall portion 13 is provided between two adjacent two inner wall portions 11a and 12a (that is, between two adjacent inner wall portions 11a and between the adjacent inner wall portions 11a and 12a). Has been formed. The inner wall portions 11a and 12a project more inside the accommodation space than the outer wall portion 13. That is, the inner wall portions 11a and 12a formed on the front wall 10A are located rearward of the outer wall portion 13.

図４Ａ及び図４Ｃで示されるように、第１の凸部１１の内壁部１１ａは第２の凸部１２の内壁部１２ａよりも大きく収容空間の内側に張り出している。前壁１０Ａにおいては、第１の凸部１１の内壁部１１ａは第２の凸部１１の内壁部１２ａよりも後方に位置している。したがって、前後方向における内壁部１２ａの位置は、前後方向における内壁部１１ａの位置と外壁部１３の位置の間となる。緩衝材１の使用時、前壁１０Ａは第１の凸部１１の内壁部１１ａで被収容物Ｐを支持する。第１の凸部１１が変形していない状態では、第２の凸部１２の内壁部１２ａは被収容物Ｐには当たらない。このように突出幅の異なる２種類の凸部１１、１２を前壁１０Ａに形成することによって、例えば全ての凸部の大きさが同じである構造に比して、被収容物Ｐに大きな力が作用することを抑えることができる。緩衝材１の例では、３つの第１の凸部１１と３つの第２の凸部１２とが前壁１０Ａに形成されている。凸部１１、１２の数は緩衝材１の例に限られない。 As shown in FIGS. 4A and 4C, the inner wall portion 11 a of the first convex portion 11 is larger than the inner wall portion 12 a of the second convex portion 12 and projects to the inside of the accommodation space. In the front wall 10A, the inner wall portion 11a of the first protrusion 11 is located rearward of the inner wall portion 12a of the second protrusion 11. Therefore, the position of the inner wall portion 12a in the front-rear direction is between the position of the inner wall portion 11a and the position of the outer wall portion 13 in the front-rear direction. When the cushioning material 1 is used, the front wall 10A supports the article P by the inner wall portion 11a of the first convex portion 11. In a state where the first convex portion 11 is not deformed, the inner wall portion 12a of the second convex portion 12 does not hit the contained object P. By forming the two types of protrusions 11 and 12 having different projecting widths on the front wall 10A in this manner, for example, compared to a structure in which all the protrusions have the same size, a large force is exerted on the contained object P. Can be suppressed. In the example of the cushioning material 1, three first convex portions 11 and three second convex portions 12 are formed on the front wall 10A. The number of the convex portions 11 and 12 is not limited to the example of the cushioning material 1.

緩衝材１の例では、左右方向での第１の凸部１１の幅と、左右方向での第２の凸部１２の幅は概ね同じであるが、それらの幅の関係は緩衝材１の例に限られない。また、外壁部１３も、左右方向での幅について、凸部１１、１２と概ね同じであるが、その大きさは緩衝材１の例に限られない。 In the example of the cushioning material 1, the width of the first protruding portion 11 in the left-right direction and the width of the second protruding portion 12 in the left-right direction are approximately the same, but the relationship between these widths is that of the cushioning material 1. It is not limited to the example. Further, the outer wall portion 13 is also substantially the same in width in the left-right direction as the protrusions 11 and 12, but the size thereof is not limited to the example of the cushioning material 1.

凸部１１、１２は柱状であり、内壁部１１ａ、１２ａの右縁と左縁とから前方に伸びて外壁部１３に接続している側壁部１１ｂ、１２ｂ（図６Ａ参照）をそれぞれ有している。また、凸部１１、１２は、内壁部１１ａ、１２ａの上縁から前方に伸びている上端壁部１１ｃ、１２ｃ（図６Ａ参照）をそれぞれ有している。前壁１０Ａのこの構造によって、前壁１０Ａの剛性をさらに向上できる。なお、上端壁部１１ｃ、１２ｃの高さは、前壁１０Ａの上縁１０ａ（図４Ａ及び図４Ｃ参照）の高さに一致している。 The convex portions 11 and 12 are columnar, and have side wall portions 11b and 12b (see FIG. 6A) that extend forward from the right and left edges of the inner wall portions 11a and 12a and are connected to the outer wall portion 13 respectively. There is. Further, the convex portions 11 and 12 have upper end wall portions 11c and 12c (see FIG. 6A) extending forward from the upper edges of the inner wall portions 11a and 12a, respectively. This structure of the front wall 10A can further improve the rigidity of the front wall 10A. The heights of the upper end wall portions 11c and 12c match the height of the upper edge 10a (see FIGS. 4A and 4C) of the front wall 10A.

緩衝材１の後壁１０Ｂは前壁１０Ａと同じ構造を有している。すなわち、後壁１０Ｂは上述した凸部１１、１２と外壁部１３とを有している。緩衝材１の例において、左右方向における後壁１０Ｂの凸部１１、１２の位置は、左右方向における前壁１０Ａの凸部１１、１２の位置と一致している。緩衝材１とは異なり、後壁１０Ｂの凸部１１、１２と、前壁１０Ａの凸部１１、１２は、左右方向においてずれていてもよい。 The rear wall 10B of the cushioning material 1 has the same structure as the front wall 10A. That is, the rear wall 10B has the above-mentioned convex portions 11 and 12 and the outer wall portion 13. In the example of the cushioning material 1, the positions of the protrusions 11 and 12 of the rear wall 10B in the left-right direction coincide with the positions of the protrusions 11 and 12 of the front wall 10A in the left-right direction. Unlike the cushioning material 1, the convex portions 11 and 12 of the rear wall 10B and the convex portions 11 and 12 of the front wall 10A may be displaced in the left-right direction.

前壁１０Ａと後壁１０Ｂの構造は、緩衝材１の例に限られない。例えば、前後方向における第２凸部１２の内壁部１２ａの位置は第１凸部１１の内壁部１１ａと同じであってもよい。すなわち、前壁１０Ａと後壁１０Ｂは１種類の凸部だけを有してもよい。これとは異なり、前壁１０Ａと後壁１０Ｂは、内側への張り出しの大きさが異なる３種類の凸部を有してもよい。さらに他の例では、凸部１１、１２は前壁１０Ａの上縁１０ａに達していなくてもよい。つまり、上端壁部１１ｃ、１２ｃは、前壁１０Ａの上縁１０ａより低い位置に形成されてもよい。さらに他の例では、前壁１０Ａと後壁１０Ｂの構造は同じで無くてもよい。 The structure of the front wall 10A and the rear wall 10B is not limited to the example of the cushioning material 1. For example, the position of the inner wall portion 12a of the second protrusion 12 in the front-back direction may be the same as the position of the inner wall portion 11a of the first protrusion 11. That is, the front wall 10A and the rear wall 10B may have only one type of protrusion. Unlike this, the front wall 10A and the rear wall 10B may have three types of protrusions having different sizes of inward projection. In still another example, the protrusions 11 and 12 may not reach the upper edge 10a of the front wall 10A. That is, the upper end wall portions 11c and 12c may be formed at a position lower than the upper edge 10a of the front wall 10A. In still another example, the front wall 10A and the rear wall 10B do not have to have the same structure.

図１に示すように、右壁２０Ａにも、収容空間の内側に向かって張り出している（左方に向かって張り出している）凸部２１が形成されている。右壁２０Ａには２つの凸部２１が形成され、これらは前後方向で並んでいる。右壁２０Ａに形成される凸部２１の数は緩衝材１の例に限られない。凸部２１の数は、例えば、１つでもよいし、３つ以上であってもよい。凸部２１は、収容空間の内側に向いており且つ底壁３０から上側に伸びている内壁部２１ａ（図３参照）を有している。また、右壁２０Ａは、底壁３０から上側に伸びている複数の外壁部２３（図３参照）を有している。凸部２１の内壁部２１ａと外壁部２３は前後方向で交互に並んでいる。すなわち、２つの内壁部２１ａの間に１つの外壁部２３が形成されている。内壁部２１ａは、外壁部２３よりも収容空間の内側に張り出している。すなわち、右壁２０Ａに形成されている内壁部２１ａは、外壁部２３よりも左方に位置している。このような右壁２０Ａの構造により、その剛性を向上できている。凸部２１の突出幅は、上述した前壁１０Ａの凸部１１、１２と同様に、例えば、緩衝材１の厚さＴ１（図５参照）の４倍よりも大きい。緩衝材１の使用時、右壁２０Ａは、内壁部２１ａで被収容物Ｐを支持する。 As shown in FIG. 1, the right wall 20A is also formed with a convex portion 21 that projects toward the inside of the accommodation space (projects toward the left). Two convex portions 21 are formed on the right wall 20A, and these are arranged in the front-rear direction. The number of the convex portions 21 formed on the right wall 20A is not limited to the example of the cushioning material 1. The number of the convex portions 21 may be, for example, one, or may be three or more. The convex portion 21 has an inner wall portion 21 a (see FIG. 3) that faces the inside of the accommodation space and extends upward from the bottom wall 30. The right wall 20A also has a plurality of outer wall portions 23 (see FIG. 3) extending upward from the bottom wall 30. The inner wall portions 21a and the outer wall portions 23 of the convex portion 21 are alternately arranged in the front-rear direction. That is, one outer wall portion 23 is formed between the two inner wall portions 21a. The inner wall portion 21 a projects more toward the inside of the accommodation space than the outer wall portion 23. That is, the inner wall portion 21a formed on the right wall 20A is located to the left of the outer wall portion 23. The rigidity of the right wall 20A can be improved by such a structure. The protrusion width of the protrusion 21 is, for example, larger than four times the thickness T1 (see FIG. 5) of the cushioning material 1 as in the protrusions 11 and 12 of the front wall 10A described above. When the cushioning material 1 is used, the right wall 20A supports the article P by the inner wall portion 21a.

右壁２０の凸部２１は柱状であり、内壁部２１ａの前縁と後縁から右方に伸びて外壁部２３に接続している側壁部２１ｂ（図６Ａ参照）を有している。凸部２１は、内壁部２１ａの上縁から右方に伸びている上端壁部２１ｃ（図６Ａ参照）を有している。上端壁部２１ｃによって、右壁２０Ａの剛性を向上できる。上端壁部２１ｃの高さは、右壁２０Ａの上縁の高さに一致している。 The convex portion 21 of the right wall 20 is columnar, and has a side wall portion 21b (see FIG. 6A) extending rightward from the front edge and the rear edge of the inner wall portion 21a and connected to the outer wall portion 23. The convex portion 21 has an upper end wall portion 21c (see FIG. 6A) extending rightward from the upper edge of the inner wall portion 21a. The rigidity of the right wall 20A can be improved by the upper end wall portion 21c. The height of the upper end wall portion 21c matches the height of the upper edge of the right wall 20A.

図１に示すように、左壁２０Ｂは凸部２２と外壁部２３とを有している。凸部２２は、右壁２０Ａの凸部２１と同様に、収容空間の内側に張り出している。左壁２０Ｂにおける凸部２２の数は、右壁２０Ａとは異なり、１つである。したがって、２つの外壁部２３の間に１つの凸部２２が形成されている。緩衝材１の例とは異なり、凸部２２の数は１つより多くてもよい。凸部２２も、底壁３０から上側に伸びている内壁部２２ａ（図３参照）と、内壁部２２ａの上縁から左方に伸びている上端壁部２２ｃ（図３参照）を有している。上端壁部２２ｃの高さは左壁２０Ｂの上縁の高さに一致している。緩衝材１の例とは異なり、左壁２０Ｂの構造は右壁２０Ａと同じでもよい。 As shown in FIG. 1, the left wall 20B has a convex portion 22 and an outer wall portion 23. The convex portion 22 projects to the inside of the accommodation space similarly to the convex portion 21 of the right wall 20A. Unlike the right wall 20A, the number of the convex portions 22 on the left wall 20B is one. Therefore, one convex portion 22 is formed between the two outer wall portions 23. Unlike the example of the cushioning material 1, the number of the convex portions 22 may be more than one. The convex portion 22 also has an inner wall portion 22a (see FIG. 3) extending upward from the bottom wall 30 and an upper end wall portion 22c (see FIG. 3) extending leftward from the upper edge of the inner wall portion 22a. There is. The height of the upper end wall portion 22c matches the height of the upper edge of the left wall 20B. Unlike the example of the cushioning material 1, the structure of the left wall 20B may be the same as that of the right wall 20A.

従来の緩衝材は、緩衝材の開口の縁にフランジ（例えば、図４Ｂにおいて２点鎖線で示すフランジＮ）を有している。フランジは、緩衝材の開口の縁から緩衝材の外側に広がり且つ開口の縁に沿って伸びている部分である。フランジは開口の全周に亘って形成される。一方、本開示で提案する緩衝材１は、その開口の縁にフランジを有していない。 The conventional cushioning material has a flange (for example, a flange N indicated by a two-dot chain line in FIG. 4B) at the edge of the opening of the cushioning material. The flange is a portion that extends from the edge of the opening of the cushioning material to the outside of the cushioning material and extends along the edge of the opening. The flange is formed over the entire circumference of the opening. On the other hand, the cushioning material 1 proposed in the present disclosure does not have a flange at the edge of the opening.

すなわち、前壁１０Ａと後壁１０Ｂは、図４Ｂで示されるように、外壁部１３の位置を超えて緩衝材１の外側に伸びている部分を、それらの上縁１０ａに有していない。言い換えると、前壁１０Ａは外壁部１３の位置を超えて前方に伸びている部分を有していない。また、後壁１０Ｂは外壁部１３の位置を超えて後方に伸びている部分を有していない。 That is, as shown in FIG. 4B, the front wall 10A and the rear wall 10B do not have portions extending beyond the position of the outer wall portion 13 to the outside of the cushioning material 1 at their upper edges 10a. In other words, the front wall 10A does not have a portion that extends forward beyond the position of the outer wall portion 13. Further, the rear wall 10B does not have a portion that extends rearward beyond the position of the outer wall portion 13.

したがって、前壁１０Ａにおいては外壁部１３が最も前方に位置し、後壁１０Ｂにおいては外壁部１３が最も後方に位置している。緩衝材１の例では、外壁部１３は上下方向に対して外側に僅かに傾斜している。したがって、前壁１０Ａにおいては外壁部１３の上縁（前壁１０Ａの上縁１０ａ）が最も前方に位置し、後壁１０Ｂにおいては外壁部１３の上縁（後壁１０Ｂの上縁１０ａ）最も後方に位置している。したがって、緩衝材１の使用時には、外壁部１３自体（外壁部１３の上縁を含む）が収容箱の内面に接する。 Therefore, in the front wall 10A, the outer wall portion 13 is located at the frontmost position, and in the rear wall 10B, the outer wall portion 13 is located at the rearmost position. In the example of the cushioning material 1, the outer wall portion 13 is slightly inclined outward with respect to the vertical direction. Therefore, in the front wall 10A, the upper edge of the outer wall portion 13 (the upper edge 10a of the front wall 10A) is located most forward, and in the rear wall 10B, the upper edge of the outer wall portion 13 (the upper edge 10a of the rear wall 10B) is the most. It is located at the rear. Therefore, when the cushioning material 1 is used, the outer wall portion 13 itself (including the upper edge of the outer wall portion 13) contacts the inner surface of the storage box.

このような緩衝材１によると、被収容物Ｐを収容する収容箱のサイズを小さくでき、その結果、被収容物Ｐの輸送効率を向上できる。なお、前壁１０Ａと後壁１０Ｂとには、上述した凸部１１、１２が形成されている。このことによって、フランジがなくても十分な剛性を緩衝材１に確保できる。 With such a cushioning material 1, the size of the storage box for storing the article P can be reduced, and as a result, the transportation efficiency of the article P can be improved. The above-described convex portions 11 and 12 are formed on the front wall 10A and the rear wall 10B. As a result, the cushioning material 1 can have sufficient rigidity without the flange.

このように前壁１０Ａ及び後壁１０Ｂはフランジを有していないので、外壁部１３を間にして左右方向で並んでいる２つの凸部１１の上端壁部１１ｃは、外壁部１３の上縁（上縁１０ａの一部）を介して互いに繋がっている。つまり、前壁１０Ａ及び後壁１０Ｂが上縁１０ａにフランジを有している場合、左右方向で並ぶ２つの凸部１１の上端壁部１１ｃは外壁部１３の上縁とフランジとを介して互いに接続されることとなる。しかしながら、緩衝材１においては、前壁１０Ａ及び後壁１０Ｂの上縁１０ａにフランジは形成されていないので、２つの凸部１１の上端壁部１１ｃは外壁部１３の上縁だけを介して互いに接続されることとなる。前壁１０Ａは、第１の凸部１１と第２の凸部１２との間に位置している外壁部１３を有している。凸部１１、１２の上端壁部１１ｃ、１２ｃは外壁部１３の上縁だけを介して互いに接続されている。前壁１０Ａは、２つの第２の凸部１２の間に位置している外壁部１３を有してもよい。そして、２つの凸部１２の上端壁部１２ｃは外壁部１３の上縁だけを介して互いに接続されてもよい。 As described above, since the front wall 10A and the rear wall 10B do not have flanges, the upper end wall portions 11c of the two convex portions 11 that are lined up in the left-right direction with the outer wall portion 13 in between are located at the upper edge of the outer wall portion 13. They are connected to each other via (a part of the upper edge 10a). That is, when the front wall 10A and the rear wall 10B have a flange on the upper edge 10a, the upper end wall portions 11c of the two convex portions 11 arranged in the left-right direction are mutually separated via the upper edge of the outer wall portion 13 and the flange. Will be connected. However, in the cushioning material 1, since no flange is formed on the upper edge 10a of the front wall 10A and the rear wall 10B, the upper end wall portions 11c of the two protrusions 11 are mutually separated only through the upper edge of the outer wall portion 13. Will be connected. The front wall 10A has an outer wall portion 13 located between the first convex portion 11 and the second convex portion 12. The upper end wall portions 11c and 12c of the convex portions 11 and 12 are connected to each other only through the upper edge of the outer wall portion 13. The front wall 10A may have the outer wall portion 13 located between the two second convex portions 12. The upper end wall portions 12c of the two convex portions 12 may be connected to each other only via the upper edge of the outer wall portion 13.

なお、外壁部１３の上縁は、上縁１０ａ（すなわち、緩衝材１の材料の端部）のうち外壁部１３によって構成される部分である。後述するように、外壁部１３を外壁部１３に沿った方向（矢印Ｄ、図５参照）で見たときに、外壁部１３の上縁の厚さ（Ｔ２、図５参照）は外壁部１３の厚さ（Ｔ１）と実質的に同じである。したがって、緩衝材１は、外壁部１３の断面において、外壁部２３の上縁に繋がる部位を有していない。前壁１０Ａ及び後壁１０Ｂがフランジを有している場合には、緩衝材１の開口（上方に開いた開口）の縁は外壁部１３の縁（フランジの縁）からフランジの幅だけ離れた位置に存在することとなる。しかしながら、緩衝材１においては、前壁１０Ａ及び後壁１０Ｂはフランジを有していないので、外壁部１３の上縁は緩衝材１の開口（上方に開いた開口）の縁の一部を構成することとなる。 The upper edge of the outer wall portion 13 is a portion formed by the outer wall portion 13 of the upper edge 10a (that is, the end portion of the material of the cushioning material 1). As will be described later, when the outer wall portion 13 is viewed in the direction along the outer wall portion 13 (arrow D, see FIG. 5), the thickness of the upper edge of the outer wall portion 13 (T2, see FIG. 5) is the outer wall portion 13. Is substantially the same as the thickness (T1). Therefore, the cushioning material 1 does not have a portion connected to the upper edge of the outer wall portion 23 in the cross section of the outer wall portion 13. When the front wall 10A and the rear wall 10B have flanges, the edge of the opening (opening upward) of the cushioning material 1 is separated from the edge of the outer wall portion 13 (edge of the flange) by the width of the flange. Will be in position. However, in the cushioning material 1, since the front wall 10A and the rear wall 10B do not have flanges, the upper edge of the outer wall portion 13 constitutes a part of the edge of the opening (opening upward) of the cushioning material 1. Will be done.

なお、凸部１１、１２の上端壁部１１ｃ、１２ｃの縁（内壁部１１ａ、１２ａとは反対側に位置する縁）は、外壁部１３の上縁の位置を緩衝材１の外側に向かって超えていない。緩衝材１の例では、上端壁部１１ｃ、１２ｃの縁の位置は、外壁部１３の上縁の位置と同じである。すなわち、前壁１０Ａの上縁１０ａは左右方向に沿って直線的に形成されている。上端壁部１１ｃ、１２ｃの縁と外壁部１３の上縁は、左右方向で並び上縁１０ａを構成している。 The edges of the upper end walls 11c and 12c of the protrusions 11 and 12 (the edges located on the opposite side of the inner walls 11a and 12a) are located at the upper edge of the outer wall 13 toward the outside of the cushioning material 1. Not exceeded. In the example of the cushioning material 1, the positions of the edges of the upper end wall portions 11c and 12c are the same as the positions of the upper edges of the outer wall portion 13. That is, the upper edge 10a of the front wall 10A is linearly formed along the left-right direction. The edges of the upper end wall portions 11c and 12c and the upper edge of the outer wall portion 13 are arranged in the left-right direction to form an upper edge 10a.

前壁１０Ａの上縁１０ａにフランジは形成されていないものの、図５に示すように、上縁１０ａは僅かに前方に湾曲している。外壁部１３に沿った方向（図５において矢印Ｄの示す方向）に外壁部１３を見たときに得られる上縁１０ａの厚さＴ２は、前壁１０Ａの厚さ（外壁部１３の厚さ）Ｔ１より大きいものの、厚さＴ１の２倍よりも小さい。好ましくは、厚さＴ２は厚さＴ１の１．５倍以下である。すなわち、厚さＴ２と厚さＴ１とは実質的に同じである。 Although no flange is formed on the upper edge 10a of the front wall 10A, the upper edge 10a is slightly curved forward as shown in FIG. The thickness T2 of the upper edge 10a obtained when the outer wall portion 13 is viewed in the direction along the outer wall portion 13 (the direction indicated by the arrow D in FIG. 5) is the thickness of the front wall 10A (the thickness of the outer wall portion 13). ) Although it is larger than T1, it is smaller than twice the thickness T1. Preferably, the thickness T2 is 1.5 times or less than the thickness T1. That is, the thickness T2 and the thickness T1 are substantially the same.

上述したように、前壁１０Ａには凸部１１、１２が形成されている。凸部１１、１２の突出幅Ｗ１、Ｗ２（図４Ａ、図４Ｃ参照）は、例えば、前壁１０Ａの上縁１０ａの厚さＴ２（図５参照）の３倍よりも大きい。突出幅Ｗ１、Ｗ２は、好ましくは、前壁１０Ａの上縁１０ａの厚さＴ２の４倍よりも大きい。突出幅Ｗ１、Ｗ２は、さらに好ましくは、緩衝材１の縁１０ａの厚さＴ２の５倍よりも大きい。緩衝材１の例では、凸部１１の突出幅Ｗ１は、例えば緩衝材１の縁１０ａの厚さＴ２の６倍よりも大きい。このように突出幅が比較的大きいため、高い緩衝性能を確保でき、且つフランジが縁１０ａに形成されていなくても前壁１０Ａの剛性を確保できる。凸部１１、１２の突出幅Ｗ１、Ｗ２は、厚さＴ１、Ｔ２の３倍より小さくてもよい。 As described above, the protrusions 11 and 12 are formed on the front wall 10A. The protrusion widths W1 and W2 of the protrusions 11 and 12 (see FIGS. 4A and 4C) are, for example, larger than three times the thickness T2 (see FIG. 5) of the upper edge 10a of the front wall 10A. The protrusion widths W1 and W2 are preferably larger than four times the thickness T2 of the upper edge 10a of the front wall 10A. The protrusion widths W1 and W2 are more preferably larger than 5 times the thickness T2 of the edge 10a of the cushioning material 1. In the example of the cushioning material 1, the protrusion width W1 of the convex portion 11 is, for example, larger than six times the thickness T2 of the edge 10a of the cushioning material 1. Since the projecting width is relatively large as described above, high cushioning performance can be ensured, and rigidity of the front wall 10A can be ensured even if the flange is not formed on the edge 10a. The protrusion widths W1 and W2 of the protrusions 11 and 12 may be smaller than three times the thicknesses T1 and T2.

図３に示すように、右壁２０Ａもフランジを有していない。すなわち、右壁２０Ａは、外壁部２３の位置を超えて緩衝材１の外側に伸びている部分（言い換えると、外壁部２３の位置を超えて右方に伸びている部分）を、その上縁２０ａに有していない。したがって、右壁２０Ａにおいては外壁部２３が最も右方に位置している。 As shown in FIG. 3, the right wall 20A also has no flange. That is, the right wall 20</b>A has a top edge that extends beyond the position of the outer wall portion 23 and extends to the outside of the cushioning material 1 (in other words, a portion that extends beyond the position of the outer wall portion 23 and extends to the right). 20a does not have it. Therefore, in the right wall 20A, the outer wall portion 23 is located on the rightmost side.

外壁部２３は緩衝材１の外側に向かって（右側に向かって）傾斜している。したがって、右壁２０Ａにおいては外壁部２３の上縁（右壁２０Ａの上縁２０ａ）が最も右方に位置している。その結果、緩衝材１の使用時には、外壁部２３（外壁部２３の上縁を含む）が収容箱の内面に接する。なお、図６Ａに示すように、凸部２１の上端壁部２１ｃの右縁は外壁部２３の位置を超えておらず、右壁２０Ａの上縁２０ａは前後方向に沿って直線的に形成されている。 The outer wall portion 23 is inclined toward the outside of the cushioning material 1 (toward the right side). Therefore, in the right wall 20A, the upper edge of the outer wall portion 23 (the upper edge 20a of the right wall 20A) is located on the rightmost side. As a result, when the cushioning material 1 is used, the outer wall portion 23 (including the upper edge of the outer wall portion 23) contacts the inner surface of the storage box. As shown in FIG. 6A, the right edge of the upper end wall portion 21c of the convex portion 21 does not exceed the position of the outer wall portion 23, and the upper edge 20a of the right wall 20A is linearly formed along the front-rear direction. ing.

このように右壁２０Ａはフランジを有していないので、外壁部２３を間にして前後方向で並んでいる２つの凸部２１の上端壁部２１ｃは、外壁部２３の上縁（上縁２０ａの一部）を介して互いに繋がっている。つまり、右壁２０Ａが上縁２０ａにフランジを有している場合、前後方向で並ぶ２つの凸部２１の上端壁部２１ｃは外壁部２３の上縁とフランジとを介して互いに接続されることとなる。しかしながら、緩衝材１においては、右壁２０Ａの上縁２０ａにフランジは形成されていないので、２つの凸部２１の上端壁部２１ｃは外壁部２３の上縁だけを介して互いに接続されることとなる。 Since the right wall 20A does not have a flange in this way, the upper end wall portions 21c of the two protrusions 21 that are lined up in the front-rear direction with the outer wall portion 23 in between are located at the upper edge of the outer wall portion 23 (the upper edge 20a). (Part of) and are connected to each other. That is, when the right wall 20A has a flange on the upper edge 20a, the upper end wall portions 21c of the two convex portions 21 arranged in the front-rear direction should be connected to each other via the upper edge of the outer wall portion 23 and the flange. Becomes However, in the cushioning material 1, since no flange is formed on the upper edge 20a of the right wall 20A, the upper end wall portions 21c of the two convex portions 21 should be connected to each other only via the upper edge of the outer wall portion 23. Becomes

外壁部２３の上縁は、右壁２０Ａの上縁２０ａ（すなわち、緩衝材１の材料の端部）の一部である。したがって、緩衝材１は、外壁部２３の断面において、外壁部２３の上縁に繋がる部位を有していない。右壁２０Ａがフランジを有している場合には、緩衝材１の開口（上方に開いた開口）の縁は外壁部２３の縁（フランジの縁）からフランジの幅だけ離れた位置に存在することとなる。しかしながら、緩衝材１においては、右壁２０Ａはフランジを有していないので、外壁部２３の上縁は緩衝材１の開口（上方に開いた開口）の縁の一部を構成することとなる。 The upper edge of the outer wall portion 23 is a part of the upper edge 20a of the right wall 20A (that is, the end portion of the material of the cushioning material 1). Therefore, the cushioning material 1 does not have a portion connected to the upper edge of the outer wall portion 23 in the cross section of the outer wall portion 23. When the right wall 20A has a flange, the edge of the opening (opening upward) of the cushioning material 1 exists at a position separated from the edge of the outer wall portion 23 (edge of the flange) by the width of the flange. It will be. However, in the cushioning material 1, since the right wall 20A does not have a flange, the upper edge of the outer wall portion 23 constitutes a part of the edge of the opening (opening upward) of the cushioning material 1. ..

また、図５を参照して説明した前壁１０Ａの厚さＴ１、Ｔ２と同様に、右壁１０Ａの外壁部２３に沿った方向に外壁部２３を見たときに得られる上縁２０ａの厚さは、右壁２０Ａの厚さ（外壁部２３の厚さ）の２倍よりも小さい。好ましくは、上縁２０ａの厚さは、右壁２０Ａの厚さ（外壁部２３の厚さ）の１．５倍以下である。また、凸部２１の突出幅は、例えば、右壁２０Ａの上縁２０ａの厚さの３倍よりも大きい。この突出幅は、好ましくは、右壁２０Ａの上縁２０ａの厚さの４倍よりも大きい。 Further, similarly to the thicknesses T1 and T2 of the front wall 10A described with reference to FIG. 5, the thickness of the upper edge 20a obtained when the outer wall portion 23 is viewed in the direction along the outer wall portion 23 of the right wall 10A. The thickness is smaller than twice the thickness of the right wall 20A (thickness of the outer wall portion 23). Preferably, the thickness of the upper edge 20a is 1.5 times or less the thickness of the right wall 20A (thickness of the outer wall portion 23). The protruding width of the convex portion 21 is, for example, larger than three times the thickness of the upper edge 20a of the right wall 20A. This protrusion width is preferably larger than four times the thickness of the upper edge 20a of the right wall 20A.

右壁２０Ａと同様に、左壁２０Ｂもフランジを有していない。すなわち、左壁２０Ｂは、外壁部２３の位置を超えて緩衝材１の外側に伸びている部分（左方に伸びている部分）を有していない。 Like the right wall 20A, the left wall 20B has no flange. That is, the left wall 20B does not have a portion that extends beyond the position of the outer wall portion 23 and extends to the outside of the cushioning material 1 (a portion that extends to the left).

このように、緩衝材１では、４つの壁１０Ａ、１０Ｂ、２０Ａ、２０Ｂの上縁１０ａ、２０ａにフランジが形成されていない。すなわち、緩衝材１は、開口の縁の全周に亘ってフランジを有していない。緩衝材１の例とは異なり、前壁１０Ａ及び後壁１０Ｂにはフランジが形成されていないものの、右壁２０Ａ及び左壁２０Ｂにはフランジが形成されてもよい。 As described above, in the cushioning material 1, no flange is formed on the upper edges 10a, 20a of the four walls 10A, 10B, 20A, 20B. That is, the cushioning material 1 does not have a flange over the entire circumference of the edge of the opening. Unlike the example of the cushioning material 1, no flange is formed on the front wall 10A and the rear wall 10B, but a flange may be formed on the right wall 20A and the left wall 20B.

図１に示すように、底壁３０にも、収容空間の内側に向かって張り出している（上方に突出している）凸部３１が形成されている。図３に示すように、凸部３１は、左右方向において間隔をあけて並んでいる。底壁３０は、隣り合う２つの凸部３１の間に位置している低壁部（外壁部）３２、３３を有している。凸部３１は、低壁部３２、３３よりも高い位置にある高壁部（内壁部）３１ａを有している。言い換えれば、高壁部３１ａは、低壁部３２、３３よりも収容空間の内側に位置している。高壁部３１ａと低壁部３２、３３は左右方向に並んでいる。すなわち、隣り合う２つの高壁部３１ａの間には低壁部３２又は低壁部３３が形成されている。この構造によって、底壁３０の剛性が高くなり、その結果、緩衝材１の開口の縁にフランジが形成されていないものの、緩衝材１の高い剛性が確保されている。 As shown in FIG. 1, the bottom wall 30 is also formed with a convex portion 31 that projects (projects upward) toward the inside of the accommodation space. As shown in FIG. 3, the convex portions 31 are arranged side by side in the left-right direction at intervals. The bottom wall 30 has low wall portions (outer wall portions) 32 and 33 located between two adjacent convex portions 31. The convex portion 31 has a high wall portion (inner wall portion) 31 a located at a position higher than the low wall portions 32 and 33. In other words, the high wall portion 31a is located inside the accommodation space with respect to the low wall portions 32 and 33. The high wall portion 31a and the low wall portions 32 and 33 are arranged in the left-right direction. That is, the low wall portion 32 or the low wall portion 33 is formed between two adjacent high wall portions 31a. With this structure, the rigidity of the bottom wall 30 is increased, and as a result, although the flange is not formed on the edge of the opening of the shock absorbing material 1, the high rigidity of the shock absorbing material 1 is secured.

図３で示されるように、低壁部３２は低壁部３３よりも高い位置に位置している。すなわち、低壁部３２は、低壁部３３よりも収容空間の内側に位置している。上下方向における低壁部３２の位置は、高壁部３１ａよりも低い。緩衝材１の使用時には、高壁部３１ａで被収容物Ｐは支持される。また、低壁部３３が収容箱の内面にあたり、低壁部３３が変形しない状態では低壁部３２は収容箱の内面にあたらない。このことによって、例えば、全ての低壁部３２、３３が収容箱の内面にあたる構造に比して、被収容物Ｐに過剰に大きな力が作用することを抑えることができる。 As shown in FIG. 3, the low wall portion 32 is located higher than the low wall portion 33. That is, the low wall portion 32 is located inside the accommodation space with respect to the low wall portion 33. The position of the low wall portion 32 in the vertical direction is lower than that of the high wall portion 31a. When the cushioning material 1 is used, the contained object P is supported by the high wall portion 31a. Further, when the low wall portion 33 contacts the inner surface of the storage box and the low wall portion 33 is not deformed, the low wall portion 32 does not correspond to the inner surface of the storage box. As a result, for example, it is possible to suppress an excessively large force from acting on the article P compared to the structure in which all the low wall portions 32 and 33 correspond to the inner surface of the storage box.

凸部３１の高壁部３１ａは、図４Ｂに示すように、前壁１０Ａから後壁１０Ｂまで続いている。より詳細には、凸部３１の高壁部３１ａは、前壁１０Ａの外壁部１３から後壁１０Ｂの外壁部１３まで続いている。緩衝材１の例においては、凸部３１の高壁部３１ａは、被収容物Ｐの外形に合わせて斜面３１ｅを有している。斜面３１ｅは後側から前側に向かって高くなるように傾斜している。高壁部３１ａは、斜面３１ｅの前側と後側とに水平部３１ｆを有している。緩衝材１の例とは異なり、高壁部３１ａは、このような斜面３１ｅを有していなくてもよい。すなわち、高壁部３１ａは水平に形成されてもよい。さらに他の例では、底壁３０は、高さの異なる２種類の低壁部３２、３３を有していなくてもよい。 The high wall portion 31a of the convex portion 31 continues from the front wall 10A to the rear wall 10B, as shown in FIG. 4B. More specifically, the high wall portion 31a of the convex portion 31 continues from the outer wall portion 13 of the front wall 10A to the outer wall portion 13 of the rear wall 10B. In the example of the cushioning material 1, the high wall portion 31a of the convex portion 31 has a sloped surface 31e according to the outer shape of the object P to be stored. The slope 31e is inclined so as to increase from the rear side to the front side. The high wall portion 31a has horizontal portions 31f on the front side and the rear side of the slope 31e. Unlike the example of the cushioning material 1, the high wall portion 31a may not have such a slope 31e. That is, the high wall portion 31a may be formed horizontally. In still another example, the bottom wall 30 may not have the two types of low wall portions 32 and 33 having different heights.

なお、図４Ａに示すように、前壁１０Ａの第１凸部１１の内壁部１１ａと、後壁１０Ｂの第１凸部１１の内壁部１１ａとの間に、低壁部３３が形成されている。また、図４Ｃに示すように、前壁１０Ａの第１凸部１１の内壁部１１ａと、後壁１０Ｂの第１凸部１１の内壁部１１ａとの間に、低壁部３３が形成されている。 As shown in FIG. 4A, the low wall portion 33 is formed between the inner wall portion 11a of the first convex portion 11 of the front wall 10A and the inner wall portion 11a of the first convex portion 11 of the rear wall 10B. There is. Moreover, as shown in FIG. 4C, the low wall portion 33 is formed between the inner wall portion 11a of the first protrusion 11 of the front wall 10A and the inner wall portion 11a of the first protrusion 11 of the rear wall 10B. There is.

上述したように、緩衝材１の使用時、被収容物Ｐは、底壁３０の高壁部３１ａと、前壁１０Ａと後壁１０Ｂの第１凸部１１の内壁部１１ａとによって支持される。図６Ａ及び図６Ｂに示すように、高壁部３１ａは内壁部１１ａに接続している。そして、高壁部３１ａと内壁部１１ａとの接続部分に凹部Ｅが形成されている。したがって、緩衝材１の使用時、被収容物Ｐは、高壁部３１ａと内壁部１１ａの接続部分に当たらない。このことによって、被収容物Ｐの縁に過大な力が作用することを抑えることができる。 As described above, when the cushioning material 1 is used, the article P is supported by the high wall portion 31a of the bottom wall 30 and the inner wall portion 11a of the first protrusion 11 of the front wall 10A and the rear wall 10B. .. As shown in FIGS. 6A and 6B, the high wall portion 31a is connected to the inner wall portion 11a. A recess E is formed in the connecting portion between the high wall portion 31a and the inner wall portion 11a. Therefore, when the cushioning material 1 is used, the housed object P does not hit the connection portion between the high wall portion 31a and the inner wall portion 11a. As a result, it is possible to prevent an excessive force from acting on the edge of the article P to be contained.

緩衝材１の例では、高壁部３１ａは、前壁１０Ａの外壁部１３と後壁１０Ｂの外壁部１３との間に形成されており、高壁部３１ａの位置と、壁１０Ａ、１０Ｂの内壁部１１ａの位置は左右方向においてずれている。そのため、高壁部３１ａの縁３１ｇ（左右方向での端部に位置する縁）と、内壁部１１ａの縁３１ｇ（左右方向での端部に位置する縁）とが接続している。それらの接続部分（境界）に凹部Ｅが形成されている。 In the example of the cushioning material 1, the high wall portion 31a is formed between the outer wall portion 13 of the front wall 10A and the outer wall portion 13 of the rear wall 10B, and the position of the high wall portion 31a and the wall 10A, 10B. The position of the inner wall portion 11a is displaced in the left-right direction. Therefore, the edge 31g of the high wall portion 31a (edge located at the end in the left-right direction) and the edge 31g of the inner wall portion 11a (edge located at the end in the left-right direction) are connected. A recess E is formed at the connecting portion (boundary) thereof.

なお、高壁部３１ａと内壁部１１ａとの接続部分には、凹部Ｅに替えて、緩衝材１を貫通する孔が形成されてもよい。また、高壁部３１ａの位置と内壁部１１ａの位置は左右方向においてずれていなくてもよい。この場合においても、高壁部３１ａと内壁部１１ａとの接続部分には、凹部Ｅの一例として、溝が形成されてもよい。 In addition, instead of the recess E, a hole penetrating the cushioning material 1 may be formed in the connecting portion between the high wall portion 31a and the inner wall portion 11a. Further, the position of the high wall portion 31a and the position of the inner wall portion 11a may not be displaced in the left-right direction. Also in this case, a groove may be formed as an example of the recess E in the connecting portion between the high wall portion 31a and the inner wall portion 11a.

以上説明したように、緩衝材１は上方に開口し、前壁１０Ａは外壁部１３と外壁部１３よりも収容空間の内側に張り出している内壁部１１ａ、１２ａとを有している。前壁１０Ａは、その上縁１０ａにフランジを有していない。この構造によると、パルプモールド緩衝材の剛性低下を抑えながら、商品の輸送効率を向上できる As described above, the cushioning material 1 is opened upward, and the front wall 10A has the outer wall portion 13 and the inner wall portions 11a and 12a which project beyond the outer wall portion 13 to the inside of the accommodation space. The front wall 10A does not have a flange on its upper edge 10a. According to this structure, it is possible to improve the transportation efficiency of goods while suppressing the decrease in rigidity of the pulp mold cushioning material.

また、前壁１０Ａは外壁部１３と外壁部１３よりも収容空間の内側に張り出している内壁部１１ａと有し、外壁部１３と内壁部１１ａ、１２ａとが左右方向で並んでいる。底壁３０は、低壁部３３、３２と、低壁部３３よりも収容空間の内側に張り出している高壁部３１ａとを有し、低壁部３３、３２と高壁部３１ａは左右方向で並んでいる。前壁１０Ａの外壁部１３と、底壁３０の高壁部３１ａとの接続部分に凹部Ｅが形成されている。この構造によると、被収容物Ｐの角に大きな力が作用することを抑えることができる。 Further, the front wall 10A has an outer wall portion 13 and an inner wall portion 11a projecting to the inside of the accommodation space from the outer wall portion 13, and the outer wall portion 13 and the inner wall portions 11a and 12a are arranged side by side in the left-right direction. The bottom wall 30 has low wall portions 33 and 32 and a high wall portion 31a that projects to the inside of the accommodation space with respect to the low wall portion 33. The low wall portions 33 and 32 and the high wall portion 31a are arranged in the left-right direction. Are lined up. A recess E is formed in a connecting portion between the outer wall portion 13 of the front wall 10A and the high wall portion 31a of the bottom wall 30. According to this structure, it is possible to prevent a large force from acting on the corner of the housed object P.

本開示で提案するパルプモールド緩衝材は、上述した緩衝材１に限られず、種々の変更が可能である。例えば、上述したように、緩衝材１のサイズや形状は適宜変更されてよい。例えば、例えば、緩衝材１は、前壁１０Ａ、底壁３０、及び後壁１０Ｂだけを有し、壁２０Ａ、２０Ｂを有していなくてもよい。別の例として、緩衝材１は、前壁１０Ａ、右壁２０Ａ、及び底壁３０だけを有してもよい。 The pulp mold cushioning material proposed in the present disclosure is not limited to the cushioning material 1 described above, and various modifications are possible. For example, as described above, the size and shape of the cushioning material 1 may be changed appropriately. For example, the cushioning material 1 may have only the front wall 10A, the bottom wall 30, and the rear wall 10B, and may not have the walls 20A and 20B. As another example, the cushioning material 1 may have only the front wall 10A, the right wall 20A, and the bottom wall 30.

１ パルプモールド緩衝材、Ｅ 凹部、Ｐ 被収容物、１０Ａ 前壁、１０Ｂ 後壁、１０ａ 上縁、１１ 凸部、１１ａ 内壁部、１１ｂ 側壁部、１１ｃ 上端壁部、１２ 凸部、１２ａ 内壁部、１３ 外壁部、２０Ａ 右壁、２０Ｂ 左壁、２０ａ 上縁、２１ 凸部、２１ａ 内壁部、２１ｂ 側壁部、２１ｃ 上端壁部、２２ 凸部、２２ａ 内壁部、２２ｃ 上端壁部、２３ 外壁部、３０ 底壁、３１ａ 高壁部、３１ 凸部、３１ｅ 斜面、３１ｆ 水平部、３２ 低壁部、３３ 低壁部、ＩＩ 矢印。 1 Pulp mold cushioning material, E concave part, P contained object, 10A front wall, 10B rear wall, 10a upper edge, 11 convex part, 11a inner wall part, 11b side wall part, 11c upper end wall part, 12 convex part, 12a inner wall part , 13 outer wall portion, 20A right wall, 20B left wall, 20a upper edge, 21 convex portion, 21a inner wall portion, 21b side wall portion, 21c upper end wall portion, 22 convex portion, 22a inner wall portion, 22c upper end wall portion, 23 outer wall portion , 30 bottom wall, 31a high wall part, 31 convex part, 31e slope, 31f horizontal part, 32 low wall part, 33 low wall part, II arrow.

Claims (12)

被収容物が内側に配置される収容空間を規定し且つ第１の方向に開いている開口を有している複数の主壁を、有しているパルプモールド緩衝材であって、
前記複数の主壁は第１主壁を有し、
前記第１主壁は、第１外壁部と前記第１外壁部よりも前記収容空間の内側に張り出している第１内壁部と有し、前記第１外壁部と前記第１内壁部とが前記第１の方向に対して直交する第２の方向で並んでおり、
前記第１主壁は、前記第１の方向での前記第１主壁の端部に、前記第２の方向で伸びている縁部を有し、
前記第１主壁は前記縁部にフランジを有しておらず、
前記第１主壁を前記第１外壁部に沿った方向で見たときの前記縁部の厚さは、前記第１外壁部の厚さの２．０倍より小さい
ことを特徴とするパルプモールド緩衝材。 A pulp mold cushioning material having a plurality of main walls that define a storage space in which an object to be stored is arranged and that has an opening that opens in a first direction,
The plurality of main walls has a first main wall,
The first main wall includes a first outer wall portion and a first inner wall portion projecting inward of the accommodation space with respect to the first outer wall portion, and the first outer wall portion and the first inner wall portion are the above-mentioned. Are arranged in a second direction orthogonal to the first direction,
The first main wall has an edge portion extending in the second direction at an end of the first main wall in the first direction,
The first main wall does not have a flange on the edge ,
The thickness of the edge portion when the first main wall is viewed in a direction along the first outer wall portion is less than 2.0 times the thickness of the first outer wall portion. Cushioning material. 被収容物が内側に配置される収容空間を規定し且つ第１の方向に開いている開口を有している複数の主壁を、有しているパルプモールド緩衝材であって、
前記複数の主壁は第１主壁を有し、
前記第１主壁は、第１外壁部と、前記第１外壁部の位置よりも前記収容空間の内側に張り出している第１内壁部を有している少なくとも２つの第１凸部と、を有し、
前記第１外壁部は、前記少なくとも２つの前記第１凸部の間に位置し、前記第１の方向とは直交する第２の方向において前記少なくとも２つの前記第１凸部と並んでおり、
前記第１外壁部は、前記第１の方向での前記第１外壁部の端部に位置し且つ前記開口の縁の一部である第１縁部を有し、
前記少なくとも２つの第１凸部のそれぞれは、前記第１の方向での前記第１内壁部の端部に位置している端壁部を有し、
前記少なくとも２つの前記第１凸部の前記端壁部は、前記第１外壁部の前記第１縁部を介して互いに繋がっており、
前記第１主壁を前記第１外壁部に沿った方向で見たときの前記第１縁部の厚さは、前記第１外壁部の厚さの２．０倍より小さい
ことを特徴とするパルプモールド緩衝材。 A pulp mold cushioning material having a plurality of main walls that define a storage space in which an object to be stored is arranged and that has an opening that opens in a first direction,
The plurality of main walls has a first main wall,
The first main wall includes a first outer wall portion and at least two first convex portions having a first inner wall portion that projects inward of the accommodation space from the position of the first outer wall portion. Have,
The first outer wall portion is located between the at least two first convex portions, and is aligned with the at least two first convex portions in a second direction orthogonal to the first direction,
The first outer wall portion has a first edge portion that is located at an end portion of the first outer wall portion in the first direction and is a part of an edge of the opening,
Each of the at least two first convex portions has an end wall portion located at an end portion of the first inner wall portion in the first direction,
Said end wall of said at least two of said first projections, Ri Contact connected to each other via the first edge of the first outer wall section,
The thickness of the first edge portion when the first main wall is viewed in a direction along the first outer wall portion is less than 2.0 times the thickness of the first outer wall portion. Pulp mold cushioning material. 前記第１主壁は、前記第１内壁部を有し且つ前記第１外壁部よりも前記収容空間の内側に突出している第１凸部を有し、
前記第１凸部の突出幅は、前記第１主壁を前記第１主壁に沿った方向で見たときの前記縁部の厚さの３倍よりも大きい
ことを特徴とする請求項１に記載のパルプモールド緩衝材。 The first main wall has the first inner wall portion, and has a first convex portion that projects more toward the inside of the accommodation space than the first outer wall portion,
The protrusion width of the first convex portion is larger than three times the thickness of the edge portion when the first main wall is viewed in a direction along the first main wall. The pulp mold cushioning material described in 1. 前記複数の主壁は、前記第１主壁に対して前記第１の方向とは反対側に位置し、前記第１主壁に繋がっている第２主壁を含み、
前記第２主壁は、第２外壁部と前記第２外壁部よりも前記収容空間の内側に張り出している第２内壁部と有し、
前記第２外壁部と前記第２内壁部とは前記第２の方向で並んでいる
ことを特徴とする請求項１又は２に記載のパルプモールド緩衝材。 The plurality of main walls include a second main wall that is located on the side opposite to the first direction with respect to the first main wall and is connected to the first main wall,
The second main wall has a second outer wall portion and a second inner wall portion that projects more toward the inside of the accommodation space than the second outer wall portion,
The said 2nd outer wall part and the said 2nd inner wall part are located in a line in the said 2nd direction. The pulp mold cushioning material of Claim 1 or 2 characterized by the above-mentioned. 前記複数の主壁は、前記第１主壁に対して前記第２の方向に位置し、前記第１主壁に繋がっている第３主壁を有し、
前記第３主壁は、前記第１の方向での前記第３主壁の端部に、前記第１の方向と前記第２の方向の双方に直交する第３の方向で伸びている縁部を有し、
前記第３主壁は前記縁部にフランジを有していない
ことを特徴とする請求項１又は２に記載のパルプモールド緩衝材。 The plurality of main walls has a third main wall that is located in the second direction with respect to the first main wall and is connected to the first main wall,
The third main wall has an edge portion that extends at an end of the third main wall in the first direction in a third direction orthogonal to both the first direction and the second direction. Have
The pulp mold cushioning material according to claim 1 or 2, wherein the third main wall does not have a flange on the edge portion. 前記複数の主壁は、前記第１の方向で開口している開口縁を有し、
前記開口縁の全周に亘ってフランジが形成されていない
ことを特徴とする請求項１又は２に記載のパルプモールド緩衝材。 Said plurality of main wall has an opening edge which is open in front Symbol first direction,
The flange is not formed over the entire circumference of the opening edge. The pulp mold cushioning material according to claim 1, wherein the flange is not formed. 前記第１主壁は、前記収容空間の内側に張り出しており前記第１内壁部を有している第１凸部を有し、
前記第１凸部は、前記第１内壁部から前記収容空間の外側に広がっている端壁部を有している
ことを特徴とする請求項１に記載のパルプモールド緩衝材。 The first main wall has a first convex portion that projects to the inside of the accommodation space and has the first inner wall portion,
The pulp mold cushioning material according to claim 1, wherein the first convex portion has an end wall portion that extends from the first inner wall portion to the outside of the accommodation space. 前記第１内壁部と前記第２内壁部との接続部分に、凹部と孔のうちの少なくとも一方が形成されている
ことを特徴とする請求項４に記載のパルプモールド緩衝材。 The pulp mold cushioning material according to claim 4 , wherein at least one of a recess and a hole is formed in a connecting portion between the first inner wall portion and the second inner wall portion. 前記第１主壁は、前記第１内壁部として、第１−１内壁部と、前記第１−１内壁部よりも前記収容空間の内側に位置している第１−２内壁部とを有している
ことを特徴とする請求項１又は２に記載のパルプモールド緩衝材。 The first main wall has, as the first inner wall portion, a 1-1 inner wall portion and a 1-2 inner wall portion located inside the accommodation space rather than the 1-1 inner wall portion. The pulp mold cushioning material according to claim 1 or 2, characterized in that. 前記少なくとも２つの第１凸部の前記端壁部は、前記第１内壁部から前記第１の方向と前記第２の方向の双方に直交する第３の方向に伸びており、
前記端壁部は、前記第３の方向での端部に位置する縁部を有し、
前記端壁部の前記縁部は前記第１外壁部の前記第１縁部と前記第２の方向において並んでいる
ことを特徴とする請求項２に記載のパルプモールド緩衝材。 The end wall portions of the at least two first protrusions extend from the first inner wall portion in a third direction orthogonal to both the first direction and the second direction,
The end wall portion has an edge portion located at an end portion in the third direction,
The pulp mold cushioning material according to claim 2, wherein the edge portion of the end wall portion is aligned with the first edge portion of the first outer wall portion in the second direction. 第１の方向に開口している、被収容物が内側に配置される収容空間と、
前記収容空間を規定する複数の主壁と、を有しているパルプモールド緩衝材であって、
前記複数の主壁は、第１主壁と、前記第１主壁に対して前記第１の方向とは反対方向に位置し、前記第１主壁に繋がっている第２主壁とを有し、
前記第１主壁は、第１外壁部と、前記第１外壁部よりも前記収容空間の内側に張り出している第１内壁部と有し、前記第１外壁部と前記第１内壁部とが前記第１の方向に対して直交する第２の方向で並んでおり、
前記第２主壁は、第２外壁部と、前記第２外壁部よりも前記収容空間の内側に張り出している第２内壁部と有し、前記第２外壁部と前記第２内壁部とが前記第２の方向で並んでおり、
前記第１内壁部と前記第２内壁部との接続部分に、凹部又は孔が形成されている
ことを特徴とするパルプモールド緩衝材。 A housing space in which the object to be housed is arranged, which is open in the first direction,
A pulp mold cushioning material having a plurality of main walls defining the accommodation space,
The plurality of main walls have a first main wall and a second main wall that is located in a direction opposite to the first direction with respect to the first main wall and is connected to the first main wall. Then
The first main wall has a first outer wall portion and a first inner wall portion projecting to the inside of the accommodation space rather than the first outer wall portion, and the first outer wall portion and the first inner wall portion are Are arranged in a second direction orthogonal to the first direction,
The second main wall has a second outer wall portion and a second inner wall portion projecting to the inside of the accommodation space rather than the second outer wall portion, and the second outer wall portion and the second inner wall portion are Lined up in the second direction,
A pulp mold cushioning material, wherein a recess or a hole is formed in a connecting portion between the first inner wall portion and the second inner wall portion. 前記第１内壁部の位置と前記第２内壁部の位置は前記第２の方向でずれており、前記第１内壁部の縁と前記第２内壁部の縁との間に、前記凹部又は前記孔が形成されている
ことを特徴とする請求項１１に記載のパルプモールド緩衝材。 The position of the first inner wall portion and the position of the second inner wall portion are deviated in the second direction, and the recess or the gap is formed between the edge of the first inner wall portion and the edge of the second inner wall portion. The pulp mold cushioning material according to claim 11 , wherein holes are formed.
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