JP2010112615A - Cardboard-made cylindrical duct - Google Patents

Cardboard-made cylindrical duct Download PDF

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JP2010112615A
JP2010112615A JP2008284964A JP2008284964A JP2010112615A JP 2010112615 A JP2010112615 A JP 2010112615A JP 2008284964 A JP2008284964 A JP 2008284964A JP 2008284964 A JP2008284964 A JP 2008284964A JP 2010112615 A JP2010112615 A JP 2010112615A
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aluminum foil
cardboard
duct
round
corrugated
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Masahiro Kumabe
正博 隈部
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New Oji Paper Co Ltd
Oji Chiyoda Container Co Ltd
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Oji Paper Co Ltd
Oji Chiyoda Container Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To form a cylindrical air conditioning duct having a cardboard structure. <P>SOLUTION: A cylinder with 6-30 mm thick of a multilayer structure having a paper liner laminated with aluminum foil as the inner most surface of a circular cylinder is formed by winding a single-faced corrugated cardboard with an adhesive applied to corrugated top parts thereof on the aluminum foil-laminated paper liner twofold to tenfold. An aluminum foil or aluminum foil liner is adhesively bonded to the cylinder, whereby a cylindrical air conditioning duct made of a cardboard of multilayer structure is formed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、空調設備機器の配管部分に使用される段ボール構造の丸筒状の空調ダクトに関するものである。 The present invention relates to a round tube-shaped air conditioning duct having a corrugated cardboard structure used for a piping portion of an air conditioning equipment.

建物の空調ダクトには、四角形状の角ダクトと円形形状の丸ダクトがある。 There are two types of air-conditioning ducts in buildings: square corner ducts and circular round ducts.

空調ダクトには、不燃性の性能が要求されるため、従来技術では、その素材に鉄板(亜鉛メッキ鉄板等を含む)を主に使用している。
しかしながら、鉄板は重量が大である。鉄板の断熱性が小であり、保温性が小であるため、ダクト内の温度とダクト外の外気温度に約10℃以上の温度差があると、鉄板表面に結露水が発生する問題が有る。
この問題を解消するため、鉄板ダクトの表面をグラスウール等に断熱材で覆い、そのまた外側を金属箔や金網やアルミテープ等で固定する必要があった。
Since the air-conditioning duct is required to have nonflammability, the conventional technology mainly uses an iron plate (including a galvanized iron plate) as its material.
However, the iron plate is heavy. Since the heat insulation of the iron plate is small and the heat retaining property is small, if there is a temperature difference of about 10 ° C or more between the temperature inside the duct and the outside air temperature outside the duct, there is a problem that condensed water is generated on the surface of the iron plate. .
In order to solve this problem, it was necessary to cover the surface of the iron plate duct with a glass wool or the like with a heat insulating material and fix the outside with a metal foil, a metal mesh, an aluminum tape or the like.

これらの問題を解消するため、特許文献1に示される段ボール製ダクトが開発された。
しかしながら、特許文献1は、角ダクトに関する技術であり、丸ダクトを作成する技術でないため、丸ダクトに関しては、従来技術の鉄板とグラスウール等と金網等の組合せで使用されており、グラスウール等の覆い作業と金網等の固定作業に長時間を要している。
In order to solve these problems, a corrugated board duct disclosed in Patent Document 1 has been developed.
However, since Patent Document 1 is a technique related to a square duct and not a technique for creating a round duct, the round duct is used in a combination of a conventional iron plate, glass wool, and a wire mesh, and covers such as glass wool. It takes a long time to work and fix the wire mesh.

また、特許文献1にて、段ボールシートを作成し、そのシートに多数の罫線を入れて、擬似の丸ダクトを作成ことは、可能であるが、8個以上の多数の罫線を入れなければならない問題、平板シートを円形にするための継しろが必要となる問題等があった。また、特許文献2には段ボールダクトの建造物への支持手段に関する記載がある。 Further, in Patent Document 1, it is possible to create a corrugated cardboard sheet and put a large number of ruled lines on the sheet to create a pseudo round duct, but it is necessary to put a large number of ruled lines of 8 or more. There existed a problem, the problem for which the joint for making a flat sheet circular was required. Further, Patent Document 2 describes a means for supporting a corrugated cardboard duct to a building.

特開2002−267245号公報JP 2002-267245 A 特開2006−29682号公報JP 2006-29682 A

本発明は、空調ダクトの基本特性である不燃性を有しながら、鉄製の空調丸ダクトの問題である(1)重量が重すぎることと、(2)空調ダクト設置施工時におけるグラスウォールでの覆い作業と金属箔及び/又は金網等での固定作業を無くすものである。 The present invention has the incombustibility which is a basic characteristic of an air conditioning duct, but is a problem of an iron air conditioning round duct (1) is too heavy, and (2) a glass wall at the time of air conditioning duct installation construction. The covering operation and the fixing operation with a metal foil and / or a wire mesh are eliminated.

上記課題を解決するため、本発明は以下の(1)〜(5)の構成を採る。
(1)片面段ボールを基材として丸筒状に巻き付け形成した多層構造の段ボール製丸筒状ダクトにおいて、
前記多層構造の段ボール製丸筒状ダクトの内面と外面それぞれに、アルミニウム箔及び/又はアルミニウム箔をラミネートしたライナーをアルミニウム箔がダクトの内面表面と外面表面になるように設けたことを特徴とする多層構造の段ボール製丸筒状ダクトである。
(2)片面段ボールを基材として丸筒状に巻き付け形成した多層構造の段ボール製丸筒状ダクトにおいて、前記片面段ボールを2重から10重に巻き付けて形成した多層構造で、巻き付け厚さが6〜30mmであることを特徴とする(1)項に記載の多層構造の段ボール製丸筒状ダクトである。
(3)アルミニウム箔の厚さが、15〜50μmであることを特徴とする(1)項又は(2)項に記載の多層構造の段ボール製丸筒状ダクトである。
(4)片面段ボールの段山数が、30cm当り45〜100山であることを特徴とする(1)〜(3)項のいずれかに記載の多層構造の段ボール製丸筒状ダクトである。
In order to solve the above problems, the present invention adopts the following configurations (1) to (5).
(1) In a multi-layer corrugated round cylindrical duct formed by winding a single-sided corrugated board into a round cylindrical shape,
The multilayered corrugated round cylindrical duct has an aluminum foil and / or a liner laminated with aluminum foil provided on each of the inner and outer surfaces of the duct so that the aluminum foil becomes the inner surface and the outer surface of the duct. It is a cardboard round cylindrical duct having a multilayer structure.
(2) A multi-layer corrugated round cylindrical duct formed by winding a single-sided corrugated board into a round tube shape. The multi-layered structure is formed by winding the single-sided cardboard twice to 10 times, and has a winding thickness of 6 The cardboard round cylindrical duct having a multilayer structure according to item (1), characterized in that it is ˜30 mm.
(3) The multilayered corrugated cardboard cylindrical duct described in (1) or (2), wherein the aluminum foil has a thickness of 15 to 50 μm.
(4) The cardboard round cylindrical duct according to any one of (1) to (3), wherein the number of steps of single-sided cardboard is 45 to 100 per 30 cm.

(5)片面段ボールを基材として丸筒状に巻き付け形成した多層構造の段ボール製丸筒状ダクトの製造方法であって、
アルミニウム箔をラミネートしたライナーを、金属ドラムにアルミニウム箔が接するように1重に巻き付ける。該アルミニウム箔ライナーに、片面段ボールの段頂部に接着剤を塗工した片面段ボールを2重から10重に巻き付けて、多層構造とし、巻き付け厚さが6〜30mmの丸筒を作成する。該丸筒の外側にアルミニウム箔又はアルミニウム箔ライナーを接着剤で1重に接合して、丸筒状ダクトとし、該丸筒状ダクトの内面と外面がアルミニウム箔からなることを特徴とする多層構造の段ボール製丸筒状ダクトの製造方法である。
(5) A method for producing a corrugated round cylindrical duct having a multilayer structure formed by winding a single-sided corrugated board into a round cylindrical shape,
The liner laminated with the aluminum foil is wound in a single layer so that the aluminum foil is in contact with the metal drum. Single-sided corrugated cardboard coated with an adhesive on the top of the single-sided corrugated cardboard is wound around the aluminum foil liner twice to ten-fold to form a multi-layered round tube having a winding thickness of 6 to 30 mm. A multilayer structure characterized in that an aluminum foil or an aluminum foil liner is joined to the outside of the round cylinder in a single layer with an adhesive to form a round duct, and the inner and outer surfaces of the round duct are made of aluminum foil. This is a method for producing a corrugated round cylindrical duct.

本発明は、アルミニウム箔をラミネートした原紙を、円形の金属ドラムにアルミニウム箔が接する面で巻きつけ、原紙のアルミニウム箔未塗工面に、片面段ボールの段頂部に接着剤を塗工した片面段ボールを2重から10重に巻き付けて、6〜30mm厚さの丸筒を作成し、次に、この丸筒の外面にアルミニウム箔又はアルミニウム箔をラミネートしたライナーを接着剤で接合することで作成するものである。 In the present invention, a base paper laminated with an aluminum foil is wound around a circular metal drum on the surface where the aluminum foil is in contact, and a single-sided cardboard in which an adhesive is applied to the top of the single-sided cardboard on the surface of the base paper that is not coated with aluminum foil. Wound from double to 10-fold to create a 6-30mm-thick round cylinder, and then created by bonding an aluminum foil or aluminum foil-laminated liner to the outer surface of this round cylinder with an adhesive It is.

このため、本発明は丸ダクトの最内面と最外面は、不燃性のアルミニウム箔であり、内部の層は、大部分が空気層である段ボール構造であるため、(1)一定の難燃性を有する。(2)鉄単独からなるダクトより、その厚さは大きく、断熱性は大幅に向上し、空調ダクトとして使用において、結露水の発生を防止するため、グラスウール等の断熱材の金網等の固定材の使用は不要となる。(3)重量が従来の鉄製ダクトより軽量になり、設置作業等が簡易化できる。(4)従来の段ボール製ダクトとは、製造方法が異なるため、罫線を入れずに丸筒状のダクトできる。そして、罫線がないことは、空調ダクトの送風の効率化に役立つものである。 Therefore, in the present invention, the innermost surface and the outermost surface of the round duct are nonflammable aluminum foils, and the inner layer has a corrugated cardboard structure in which the majority is an air layer. Have (2) It is thicker than a duct made of iron alone, its heat insulation is greatly improved, and in order to prevent the formation of condensed water when used as an air-conditioning duct, a fixing material such as a wire mesh of heat insulating material such as glass wool The use of is unnecessary. (3) The weight is lighter than conventional iron ducts, and installation work and the like can be simplified. (4) Since the manufacturing method is different from the conventional corrugated cardboard duct, a round cylindrical duct can be formed without ruled lines. The absence of ruled lines is useful for improving the efficiency of air blowing of the air conditioning duct.

本発明は、アルミニウム箔の厚さを15〜50μmにて使用する。
アルミニウム箔の厚さは15μmより薄いと、不燃効果が低下する。
50μmより厚いと、不燃効果は向上するが、重量は重たくなり、設置等の作業効率が低下する。また、価格も高くなる。
In the present invention, the aluminum foil is used at a thickness of 15 to 50 μm.
If the thickness of the aluminum foil is less than 15 μm, the nonflammable effect is lowered.
When it is thicker than 50 μm, the incombustibility is improved, but the weight is increased, and the work efficiency of installation and the like is lowered. Also, the price will be high.

本発明に使用する片面段ボールのフルートに関しては、JIS Z 1516に規定のAフルート、Bフルート、Cフルート及びJISには規定されていないが、5号段、Eフルート等、どのフルートの使用も可であるが、Aフルート(30cm当り34±2山)より段高が高いと30cm当りの山数が少なくなるため、アルミニウム箔ライナーを片面段ボールに貼付け接着させる時に段の潰れが多くなる。
Eフルート(30cm当り88〜98山)より段高が低いと、6〜30mm厚さの丸筒を作成するのに、片面段ボールを何重にも巻く必要があり、片面段ボールの使用効率が悪くなる。
このため、本発明の片面段ボールの段山数は、30cm当り32〜100山が良好であり、30cm当り45〜80山が最良である。
The flute of single-sided cardboard used in the present invention is not defined in A flute, B flute, C flute and JIS as defined in JIS Z 1516, but any flute such as No. 5 or E flute can be used. However, if the step height is higher than the A flute (34 ± 2 ridges per 30 cm), the number of ridges per 30 centimeters decreases. Therefore, the crushed steps increase when the aluminum foil liner is bonded and adhered to single-sided cardboard.
If the step height is lower than the E flute (88-98 crests per 30 cm), it will be necessary to wind multiple layers of single-sided cardboard to create a 6-30 mm thick round tube, and the use efficiency of single-sided cardboard will be poor Become.
For this reason, the number of steps of the single-sided cardboard according to the present invention is preferably 32 to 100 peaks per 30 cm, and 45 to 80 peaks per 30 cm is the best.

片面段ボールの作成については、所謂片面段ボール作成機にて、接着剤に澱粉系接着剤を使用して作成する。
その接着に耐水性が必要の場合は、澱粉系耐水接着剤等を使用する。
最内面のアルミニウム箔をラミネートした原紙と片面段ボールとの接着剤には、酢酸ビニル系の水系接着剤、珪酸ソーダ系の水系接着剤等を使用する。
また、最外面のアルミニウム箔またはアルミニウム箔ラミネート原紙との接着剤にも、酢酸ビニル系の水系接着剤、珪酸ソーダ系の水系接着剤等を使用する。
The single-sided cardboard is prepared using a so-called single-sided cardboard making machine using a starch-based adhesive as an adhesive.
When water resistance is required for the adhesion, a starch-based water-resistant adhesive or the like is used.
As an adhesive between the base paper laminated with the innermost aluminum foil and the single-sided cardboard, a vinyl acetate aqueous adhesive, a sodium silicate aqueous adhesive, or the like is used.
Further, a vinyl acetate aqueous adhesive, a sodium silicate aqueous adhesive, or the like is also used as an adhesive with the outermost aluminum foil or aluminum foil laminate base paper.

片面段ボールの巻数及び本発明品の厚さについては、断熱性の要求等で決める。
本発明品の厚さは6〜30mmであるが、6mmより薄いと断熱性が低くなりすぎ、その外面にグラスウール等の断熱材が必要になる。
30mmより厚いと、重量が重くなりすぎ、コスト的にも高くなる。
The number of turns of the single-sided cardboard and the thickness of the product of the present invention are determined by the requirements for heat insulation.
Although the thickness of the product of the present invention is 6 to 30 mm, if it is thinner than 6 mm, the heat insulating property becomes too low, and a heat insulating material such as glass wool is required on the outer surface.
If it is thicker than 30 mm, the weight becomes too heavy and the cost becomes high.

本発明の丸筒の断面については、アルミニウム箔の厚さが10μm以上のアルミニウムテープを貼り、紙原紙が表面に見えない様にして使用する。 For the cross section of the round cylinder of the present invention, an aluminum tape having an aluminum foil thickness of 10 μm or more is applied so that the paper base paper is not visible on the surface.

本発明品の難燃性を更に高める場合は、片面段ボール等の紙原紙に、水酸化アルミニウム配合紙等の難燃紙及び/又は燐酸系・無機系等の難燃剤塗工・配合紙を使用する。
また、アルミニウム箔をラミネートした原紙と片面段ボールとの接着剤に、珪酸ソーダ系の水系接着剤等使用すると、本発明品の難燃性が高まる。
In order to further increase the flame retardancy of the product of the present invention, flame retardant paper such as aluminum hydroxide compound paper and / or phosphoric acid / inorganic flame retardant coating / compound paper is used for paper base paper such as single-sided cardboard. To do.
Further, when a sodium silicate aqueous adhesive or the like is used for the adhesive between the base paper laminated with aluminum foil and the single-sided cardboard, the flame retardancy of the product of the present invention is enhanced.

以下、本発明を実施例に従って説明する。 Hereinafter, the present invention will be described according to examples.

<実施例1>
王子板紙OFK200ライナーに20μmのアルミニウム箔を20μmのポリエチレンでラミネートした原紙を、直径400mmの円形の金属ドラムにアルミニウム箔が接する面で巻きつける。
次に、ライナー部にOFK200原紙を使用し、中芯部に王子板紙OND160中芯を使用したBフルートの片面段ボール(段山数=30cm当り50山)を、片面段ボールの段頂部に酢酸ビニル系接着剤(ダイセルファインケム社、品名=セビアンA)を塗工した後に、上記アルミニウム箔ラミネート原紙のアルミニウム箔未塗工面に、3重に巻き付けて、約9mm厚さの丸筒を作成する。
次に、この丸筒の外面に上記アルミニウム箔ラミネート原紙を上記酢酸ビニル系接着剤で接合して、内面と外面がアルミニウム箔からなる丸筒を作成する。
次に、この丸筒の円形の断面に30μmのアルミニウム箔テープを貼り、本発明の段ボール構造の丸筒状空調ダクトが得られた。
実施例1は、内径=400mm、丸筒の厚さ=9mm、丸筒の長さ1mでの重量=約1600g/本となる。
<Example 1>
A base paper obtained by laminating 20 μm of aluminum foil with 20 μm of polyethylene on Oji Paperboard OFK200 liner is wound around the surface of the aluminum foil that is in contact with a circular metal drum having a diameter of 400 mm.
Next, B flute single-sided cardboard (50 ridges per 30 cm) using OFK200 base paper for the liner part and Oji Paperboard OND160 core for the center part, and vinyl acetate-based on the top part of the single-sided cardboard After applying an adhesive (Daicel Finechem Co., Ltd., product name = Cebian A), the aluminum foil laminated base paper is wrapped around the aluminum foil uncoated surface in a triple manner to form a round cylinder having a thickness of about 9 mm.
Next, the aluminum foil laminate base paper is joined to the outer surface of the circular cylinder with the vinyl acetate adhesive, thereby creating a circular cylinder whose inner surface and outer surface are made of aluminum foil.
Next, an aluminum foil tape of 30 μm was attached to the circular cross section of this round cylinder, and a round cylindrical air conditioning duct having a corrugated board structure of the present invention was obtained.
In Example 1, the inner diameter = 400 mm, the thickness of the round cylinder = 9 mm, and the weight of the round cylinder having a length of 1 m = about 1600 g / piece.

<実施例2>
片面段ボールの原紙構成が、ライナー部=王子板紙OFC160原紙、中芯部=王子板紙OND120中芯を使用する以外は、実施例1と同様に丸筒状空調ダクトが得られた。
但し、片面段ボールの重量が変わるため、丸筒の長さ1mでの重量=約1440g/本となる。
<Example 2>
A round cylindrical air-conditioning duct was obtained in the same manner as in Example 1 except that the base paper configuration of the single-sided corrugated board used liner portion = Oji paperboard OFC160 base paper and core portion = Oji paperboard OND120 core.
However, since the weight of the single-sided cardboard changes, the weight of the round cylinder with a length of 1 m = about 1440 g / piece.

<比較例1>
厚さ=0.5mmの亜鉛メッキ鉄板を使用して、内径400mm、長さ1mの空調用丸筒ダクトを作成した。
鉄板の比重は7.86のため、比較例1は、内径=400mm、丸筒の厚さ=0.5mm、丸筒の長さ1mでの重量=約4940g/本となる。
<Comparative Example 1>
Using a galvanized iron plate having a thickness of 0.5 mm, an air-conditioning circular cylinder duct having an inner diameter of 400 mm and a length of 1 m was prepared.
Since the specific gravity of the iron plate is 7.86, in Comparative Example 1, the weight when the inner diameter is 400 mm, the thickness of the round tube is 0.5 mm, and the length of the round tube is 1 m is about 4940 g / piece.

<比較例2>
王子板紙OFK200ライナーに20μmのアルミニウム箔を20μmのポリエチレンでラミネートした原紙を、Aフルートのシングルフェーサー側ライナーとダブルフェーサー側ライナーに使用し、Aフルート中芯とBフルート中芯と中ライナーには、王子板紙OND160中芯を使用して、BAフルートの複両面段ボールシート(紙幅=1400mm、長さ=1000mm)を作成する。
次に、このシートに8個の罫線を入れと両端切断を行い、継ぎしろ=100mm、8角辺=159mmの罫線入りシートを作成する。
次に、このシートを組立て、継しろ部をアルミニウムテープで接合して、内径=約400mm、厚さ=8mm、8角筒を作成した。
8角筒の長さ1mでの重量=約1620g/本となる。
<Comparative example 2>
A base paper made by laminating 20 μm aluminum foil with 20 μm polyethylene on Oji Paperboard OFK200 liner is used for the single facer side liner and double facer side liner of A flute, and on the A flute core, the B flute core, and the middle liner Creates a BA flute double-sided cardboard sheet (paper width = 1400 mm, length = 1000 mm) using the core of Oji Paperboard OND160.
Next, eight ruled lines are put into this sheet and both ends are cut to create a sheet with ruled lines having a seam = 100 mm and eight sides = 159 mm.
Next, this sheet was assembled, and the joint portion was joined with aluminum tape to prepare an octagonal cylinder having an inner diameter of about 400 mm and a thickness of 8 mm.
The weight of an octagonal cylinder with a length of 1 m is about 1620 g / piece.

<結果>
実施例および比較例の結果を表1に示す。
<Result>
The results of Examples and Comparative Examples are shown in Table 1.

Figure 2010112615
Figure 2010112615

*1)丸ダクトの成形性:段ボールシート及び鉄板に罫線を入れることなく、丸筒状になっているものを○、罫線を入れないと、類似丸筒状にならないものを×とする。
*2)断熱性:ダクトの厚さが、従来品である比較例1の10倍以上であり、グラスウール等の断熱材で覆わなくとも、ダクト表面に結露水が発生しないものを○、
ダクト厚さが2〜10倍のものを△、ダクト厚さが1〜2倍で、断熱材で覆わないと、ダクト表面に結露水が発生するものを×とする。
*3)ダクト重量が、従来品である比較例1の1/3以下であるものを○、比較例1の1/2程度のものを△、比較例1とほぼ同様のものを×とする。
* 1) Formability of round ducts: A round tube without a ruled line on the corrugated cardboard sheet and iron plate is indicated by ○, and a similar round cylinder without a ruled line is indicated by ×.
* 2) Thermal insulation: The thickness of the duct is 10 times or more that of the comparative example 1 which is a conventional product, and even if it is not covered with a heat insulating material such as glass wool, no condensation water is generated on the duct surface.
When the duct thickness is 2 to 10 times, Δ, and when the duct thickness is 1 to 2 times and not covered with a heat insulating material, dew condensation water is generated on the duct surface.
* 3) The case where the duct weight is 1/3 or less of the comparative example 1 which is a conventional product, ◯, the case of about 1/2 of the comparative example 1 is △, and the case which is almost the same as the comparative example 1 is x. .

建物の空調ダクトに利用できる。 It can be used for air conditioning ducts in buildings.

Claims (5)

片面段ボールを基材として丸筒状に巻き付け形成した多層構造の段ボール製丸筒状ダクトにおいて、
前記多層構造の段ボール製丸筒状ダクトの内面と外面それぞれに、アルミニウム箔及び/又はアルミニウム箔をラミネートしたライナーをアルミニウム箔がダクトの内面表面と外面表面になるように設けたことを特徴とする多層構造の段ボール製丸筒状ダクト。
In a multi-layer corrugated round cylindrical duct formed by winding a single side corrugated board into a round cylindrical shape,
The multilayered corrugated round cylindrical duct has an aluminum foil and / or a liner laminated with aluminum foil provided on each of the inner and outer surfaces of the duct so that the aluminum foil becomes the inner surface and the outer surface of the duct. Multi-layer corrugated round cylindrical duct.
片面段ボールを基材として丸筒状に巻き付け形成した多層構造の段ボール製丸筒状ダクトにおいて、前記片面段ボールを2重から10重に巻き付けて形成した多層構造で、巻き付け厚さが6〜30mmであることを特徴とする請求項1に記載の多層構造の段ボール製丸筒状ダクト。 In a multi-layer corrugated round cylindrical duct formed by winding a single-sided cardboard into a round tube shape, the multi-layered structure is formed by winding the single-sided cardboard twice to 10 times, and the winding thickness is 6 to 30 mm. The cardboard round cylindrical duct according to claim 1, wherein the cardboard round cylindrical duct is provided. アルミニウム箔の厚さが、15〜50μmであることを特徴とする請求項1又は2に記載の多層構造の段ボール製丸筒状ダクト。 The multilayered cardboard round cylindrical duct according to claim 1 or 2, wherein the aluminum foil has a thickness of 15 to 50 µm. 片面段ボールの段山数が、30cm当り45〜100山であることを特徴とする請求項1〜3のいずれかに記載の多層構造の段ボール製丸筒状ダクト。 The multi-layer corrugated round cylindrical duct according to any one of claims 1 to 3, wherein the number of corrugations of single-sided corrugated cardboard is 45 to 100 per 30 cm. 片面段ボールを基材として丸筒状に巻き付け形成した多層構造の段ボール製丸筒状ダクトの製造方法であって、
アルミニウム箔をラミネートしたライナーを、金属ドラムにアルミニウム箔が接するように1重に巻き付ける。該アルミニウム箔ライナーに、片面段ボールの段頂部に接着剤を塗工した片面段ボールを2重から10重に巻き付けて、多層構造とし、巻き付け厚さが6〜30mmの丸筒を作成する。該丸筒の外側にアルミニウム箔又はアルミニウム箔ライナーを接着剤で1重に接合して、丸筒状ダクトとし、該丸筒状ダクトの内面と外面がアルミニウム箔からなることを特徴とする多層構造の段ボール製丸筒状ダクトの製造方法。
A method for producing a multi-layer corrugated round cylindrical duct formed by winding a single-sided corrugated board into a round cylindrical shape,
The liner laminated with the aluminum foil is wound in a single layer so that the aluminum foil is in contact with the metal drum. Single-sided corrugated cardboard coated with an adhesive on the top of the single-sided corrugated cardboard is wound around the aluminum foil liner twice to ten-fold to form a multi-layered round tube having a winding thickness of 6 to 30 mm. A multilayer structure characterized in that an aluminum foil or an aluminum foil liner is joined to the outside of the round cylinder in a single layer with an adhesive to form a round duct, and the inner and outer surfaces of the round duct are made of aluminum foil. Manufacturing method of corrugated cardboard round cylindrical duct.
JP2008284964A 2008-11-06 2008-11-06 Cardboard-made cylindrical duct Pending JP2010112615A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013047582A (en) * 2011-08-29 2013-03-07 Taisei Corp Paper-made circular cylindrical duct
JP2014107203A (en) * 2012-11-29 2014-06-09 Kyoritsu Air Tech Inc Optical duct

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013047582A (en) * 2011-08-29 2013-03-07 Taisei Corp Paper-made circular cylindrical duct
JP2014107203A (en) * 2012-11-29 2014-06-09 Kyoritsu Air Tech Inc Optical duct

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