JPH03106641A - Multiply corrugated fiberboard structure - Google Patents

Multiply corrugated fiberboard structure

Info

Publication number
JPH03106641A
JPH03106641A JP24582389A JP24582389A JPH03106641A JP H03106641 A JPH03106641 A JP H03106641A JP 24582389 A JP24582389 A JP 24582389A JP 24582389 A JP24582389 A JP 24582389A JP H03106641 A JPH03106641 A JP H03106641A
Authority
JP
Japan
Prior art keywords
corrugated
insert
sheet
core
corrugated fiberboard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24582389A
Other languages
Japanese (ja)
Inventor
Takeaki Ochihara
健明 柊原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP24582389A priority Critical patent/JPH03106641A/en
Publication of JPH03106641A publication Critical patent/JPH03106641A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To meet the requirements of rigidity and an easy formation with the structure comprising a corrugated fiberboard by a method wherein a sheet of corrugated fiberboard type is shaped into a wavy form and it is lined with plates as it being an insert. CONSTITUTION:An insert 3 is the corrugated plate formed of a sheet having a corrugated fiberboard type structure and it is lined with plates 1 and 2. In this manner the structure of the aforesaid sheet is also shaped into a corrugated form i.e. a corrugation of the corrugated fiberboard but with selective direction of the inner corrugated plate of the insert. It is the most desirable that the cross section of the inner corrugated plate 4 of the insert 3 appear to be wavy and that the inner corrugation of the insert 3 have such configuration as to be at right angles to the corrugation of the insert itself. The insert is folded along scores or half cut lines made thereon. The half cut line refers to the incision penetrated into the corrugated sheet material for a predetermined depth with at least the inner plate 2 left uncut.

Description

【発明の詳細な説明】 (産業上の利用分野) サンドイッチ横造のボードの考案である.(従来の技術
〉 ハニカムサンドイッチ横造や、段ボールシ一トがある. 〈発明が解決しようとする問題点〉 段ボール型の構造は、波板(コアまたは中芯とよぶ)に
張り板を接着したもの、もしくは両者が一体成形になっ
tこものがある.製造工程は簡単で量産に適するが、そ
れは内部が一次元構造しか持たないからであり、そのた
めに強度は異方性があり弱い.他方、ハニカム構造は非
常に高強度であるがコアは二次元の格子構造で量産性に
難点がある. (問題点を解決するための手段〉 段ボール型のシートを波状に折り、これを中芯として張
り板を施す.この、段ボールの段ボールという構造で強
度と作り易さとを両立させる.段ボールシ一トは指でど
うにでも曲げられるほどに弱いが、一つだけ隠れた非常
な強さがあってこれを生かす.曲げに対する強度とは桁
違いの強さがあり、それは、面内の一方向く中芯の折り
線の方向〉の圧による座屈に対する抗力である.段ボー
ルシートは三枚の薄シートから成っており、これと同重
の厚シートよりも桁はずれに座屈に強い.段ボールシー
トの構造的な厚みのためである.座屈は材の厚さに対し
て極端に起こり難くなる. 従って、中芯の素材自体にも構造的な厚みをもたせれば
格段に強化される.その目的で、本案は中芯の素材に段
ボール型構造のシートを使うものである.中芯に座屈が
起こり難いと歪み難く最終的に極めて堅い製品が出来あ
がる. 段ボールが面内方向で持つ耐座屈の大強度は、シートの
ままでは隠れていて見えない.しかし、箱に形作られ積
まれたときの荷崩れを間接的に防止している.そして、
段ボールシートは指で曲がるとはいえ素材薄シートの数
十倍の曲げ強度を持つのは、この大強度が間接的に支え
ているためである.本案はこの大強度を直接使うもので
ある.直接には、製品ボードの面に垂直な加重をこの大
強度が支える.間接的にも、ボードを曲げる応力もこの
大強度機構に伝達され甚だしく剛直なボードができあが
る. 図面に示すように、中芯{3)は段ボール型構造のシー
トを波板に折ったものである.これに張り板(11と(
2)を施す.結局、段ボールシート型の構造が重複され
、段ボールの段ボールとなる.ただし中芯内部波の方向
は選択される. 中芯(3)の断面には、中芯内部の波板(4)の断面が
波状に見えて、中芯《3》の内部波が中芯自身の波動と
は直交方向になっていることを示している.この配置が
最も優れている. 折りは,折り線を圧印するか、または半切断線を入れて
行う.半切断線とは素材となる段ボール型シートに、そ
の厚みの一定程度まで線状の切れ目を入れることである
.少なくとも裏面張り板は切らずにつながりを残す.あ
らかじめ入れられたミシン目であってもよい.精密には
v字断面の溝が適する. 高密度設計で強度を高めたいときは折りが深いので半切
断の方が作業性がよい. 中芯《3》の波形は、第1図では三角波であるが台形波
もよい.三角波をつくるための折り線は直線の並列であ
るが,この折り線自体が折れ線の並列であると、屈曲し
た三角波動の中芯ができることは知られている.これも
本案、段ボール製中芯、に適していて更に剛直である. (作用) 一高強度のボードである.中芯を厚くしただけのものよ
り桁違いに強い. 張り板なしのもの(特許請求の範囲第1項)は曲げ易さ
について異方性が非常に大きい.〈実施例1) 中芯だけでなく張り板も段ボール型のシートを素材にす
る.張り板内部の中芯の波と、中芯内部の中芯の波とは
進行方向が平行であるもの.(実施例2) 段ボール型シート製の波板を,曲柱而の形にするのは容
易である.これに同形状に曲げた張り板を施したものは
剛直な曲柱面体となる.従って管構造にもなり、ドラム
管などを代替できる.第2図に例を示す. (実施例3〉 波状に折った段ボール型シートの二枚以上を密着張り合
わせして威った中芯.中芯のみで形〈波型)を保持する
ので、張り板は後で行うというような工程も楽である.
第3図に例を示す.(実施例4〉張り板なしのものく特
許請求の範囲第1項〉は波の波長が小さいと長物の包装
材に適する. (発明の効果) 例えば、通常の段ボールシ一トは、指で楽に折れて、約
半分の面積の波板になる.これに張り板を施すと、人が
乗っても歪まず潰れもしない.紙製である段ボールシ一
トからは想像しにくい高強度であり、試作しないと予測
できない程である.また、波板サンドイツチ構造は既存
の技術で対応でき量産にも適した構造である. 紙に限らず、たいていの平板素材について同様の強化作
用がある.
[Detailed Description of the Invention] (Industrial Application Field) This is the invention of a horizontal sandwich board. (Prior art) There are honeycomb sandwich horizontal structures and corrugated sheets. The manufacturing process is simple and suitable for mass production, but this is because the interior only has a one-dimensional structure, so the strength is anisotropic and weak. Although the honeycomb structure has extremely high strength, the core has a two-dimensional lattice structure, making it difficult to mass produce. This corrugated cardboard structure achieves both strength and ease of production. Corrugated cardboard sheets are so weak that they can be bent with your fingers, but they have one hidden strength. The strength against bending is an order of magnitude higher than the strength against bending, and it is the resistance against buckling due to pressure in one direction in the plane (direction of the fold line of the center core).The corrugated sheet is made of three thin sheets. It is made of a sheet and is much more resistant to buckling than thick sheets of the same weight.This is due to the structural thickness of the corrugated sheet.Buckling becomes extremely difficult to occur depending on the thickness of the material. Therefore, if the core material itself has a structural thickness, it will be significantly strengthened.For that purpose, this proposal uses a sheet with a corrugated cardboard type structure as the core material. If bending is difficult to occur, it is difficult to warp, and the end result is an extremely hard product.The great buckling resistance that corrugated cardboard has in the in-plane direction is hidden and cannot be seen when it is a sheet.However, when it is shaped into boxes and stacked, This indirectly prevents the load from collapsing when the load is lifted.
Although corrugated sheets can be bent with your fingers, they have tens of times the bending strength of thin sheets of material because this high strength indirectly supports them. This proposal uses this large strength directly. Directly, this large strength supports the load perpendicular to the surface of the product board. Even indirectly, the stress that bends the board is also transmitted to this high-strength mechanism, creating an extremely rigid board. As shown in the drawing, the core {3) is a sheet of corrugated cardboard structure folded into corrugated sheets. This is covered with a board (11 and (
Perform 2). In the end, the corrugated sheet-type structure is duplicated, resulting in corrugated cardboard. However, the direction of the core internal wave is selected. In the cross section of the core (3), the cross section of the corrugated plate (4) inside the core appears wavy, and the internal waves of the core (3) are in a direction perpendicular to the waves of the core itself. It shows. This arrangement is the best. Folding is done by coining the fold line or inserting a half-cut line. A half-cut line is a linear cut made in the corrugated sheet material up to a certain thickness. At least the back panel is left uncut and connected. It may also be a pre-made perforation. For precision, a groove with a V-shaped cross section is suitable. When you want to increase the strength of a high-density design, it is easier to cut in half because the folds are deep. The waveform of the center core <<3>> is a triangular wave in Figure 1, but a trapezoidal wave may also be used. The fold lines used to create triangular waves are parallel straight lines, but it is known that if the fold lines themselves are parallel polygon lines, the center of a bent triangular wave will be created. This is also suitable for the present invention, a corrugated cardboard core, and is more rigid. (Function) This is a board with high strength. It is an order of magnitude stronger than something that just has a thicker core. The one without a veneer (Claim 1) has a very large anisotropy in terms of bendability. <Example 1> Not only the core but also the veneer are made of corrugated cardboard sheets. The waves at the core inside the veneer and the waves at the core inside the core are parallel in their traveling directions. (Example 2) It is easy to make a corrugated sheet made of corrugated cardboard into a curved column. Adding a clad plate bent into the same shape to this creates a rigid curved cylindrical surface. Therefore, it has a tube structure and can replace drum tubes, etc. An example is shown in Figure 2. (Example 3) A core made by closely gluing two or more corrugated sheets folded into a wavy shape.Since the shape (wavy) is maintained only with the core, the pasting can be done later. The process is also easy.
An example is shown in Figure 3. (Example 4) The one without a veneer and the claim 1> is suitable for packaging long items if the wave wavelength is small. (Effects of the invention) For example, a normal cardboard sheet can be It folds easily and becomes a corrugated sheet with approximately half the surface area.If a sheet is applied to this sheet, it will not warp or collapse even when a person rides on it.It has a high strength that is hard to imagine from a corrugated sheet made of paper. , which cannot be predicted without prototyping.Also, the corrugated sandwich structure can be handled using existing technology and is suitable for mass production.A similar strengthening effect exists for most flat plate materials, not just paper.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本案ボードの横造要図である.第2図は、管
構成例の図である. 第3図は、半切断線にて折られk段ボール型構造のシー
トニ枚が張り合わされて戒る中芯例の断面図である. 1は、表張り板 2は、裏張り板 3は,中芯 4は、中芯内部の波板
Figure 1 is a schematic diagram of the horizontal construction of the main board. Figure 2 is a diagram of an example of the tube configuration. Figure 3 is a cross-sectional view of an example of a core in which two sheets of corrugated cardboard type structure are pasted together after being folded along a half-cut line. 1 is a facing board 2 is a backing board 3 is a core 4 is a corrugated board inside the core

Claims (1)

【特許請求の範囲】 1、段ボール型構造のシートを波状に折った構造。 2、特許請求の範囲第1項のものに張り板を施した構造
[Claims] 1. A structure in which a corrugated sheet is folded into a wave shape. 2. A structure in which a panel is applied to the structure described in claim 1.
JP24582389A 1989-09-20 1989-09-20 Multiply corrugated fiberboard structure Pending JPH03106641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24582389A JPH03106641A (en) 1989-09-20 1989-09-20 Multiply corrugated fiberboard structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24582389A JPH03106641A (en) 1989-09-20 1989-09-20 Multiply corrugated fiberboard structure

Publications (1)

Publication Number Publication Date
JPH03106641A true JPH03106641A (en) 1991-05-07

Family

ID=17139387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24582389A Pending JPH03106641A (en) 1989-09-20 1989-09-20 Multiply corrugated fiberboard structure

Country Status (1)

Country Link
JP (1) JPH03106641A (en)

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