JP2002276255A - Heat and sound insulating door - Google Patents

Heat and sound insulating door

Info

Publication number
JP2002276255A
JP2002276255A JP2001078346A JP2001078346A JP2002276255A JP 2002276255 A JP2002276255 A JP 2002276255A JP 2001078346 A JP2001078346 A JP 2001078346A JP 2001078346 A JP2001078346 A JP 2001078346A JP 2002276255 A JP2002276255 A JP 2002276255A
Authority
JP
Japan
Prior art keywords
paper core
door
core
honeycomb
urethane foam
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
JP2001078346A
Other languages
Japanese (ja)
Inventor
Takahiro Shimizu
隆宏 清水
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.)
Kinki Sharyo Co Ltd
Original Assignee
Kinki Sharyo Co Ltd
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 Kinki Sharyo Co Ltd filed Critical Kinki Sharyo Co Ltd
Priority to JP2001078346A priority Critical patent/JP2002276255A/en
Publication of JP2002276255A publication Critical patent/JP2002276255A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide an easily-manufacturable, inexpensive, light weight heat and sound insulating door having an improved heat and sound insulating property. SOLUTION: This heat and sound insulating door is provided with a honeycomb type paper core 6 having multiple apertures 61 perforated through in the thickness direction. The paper core 6 is arranged inside a frame of a rib 5 constructed of a substantially rectangular frame and put between a pair of surface panels 4 and 4 arranged on thickness-directional both faces. Foaming hard urethane foam 8 applied to the back face of each of the surface panels 4 sticks the surface panels 4 and the paper core 6 together and penetrates into the honeycomb holes 61 in the paper core 6 to form a core material with the paper core 6.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、一般住宅や集合住
宅の玄関扉などとして使用される建物用扉に関し、特に
断熱性や防音性を必要とする箇所に使用される断熱・防
音扉に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door for a building used as a front door of a general house or an apartment house, and more particularly to a heat insulating / soundproof door used in a place requiring heat insulation and soundproofing. It is.

【0002】[0002]

【従来の技術】近年、居住空間の快適性が求められてい
る。このような快適な環境を実現させるためには、断熱
性能や防音(遮音)性能が必要不可欠である。断熱性能
の向上により、室内外への熱貫流を抑え、冷暖房のエネ
ルギー消費を抑制でき、省エネ・地球温暖化防止に貢献
できる。また、防音性能の向上は、室外の騒音を遮断す
る他、室内の音を外に出さないためにも必要である。
2. Description of the Related Art In recent years, comfort in living spaces has been demanded. In order to realize such a comfortable environment, heat insulation performance and sound insulation (sound insulation) performance are indispensable. By improving the heat insulation performance, it is possible to suppress the heat flow into and out of the room, suppress the energy consumption of cooling and heating, and contribute to energy saving and prevention of global warming. Further, the improvement of the soundproofing performance is necessary not only to shut off the outdoor noise, but also to prevent the indoor sound from being emitted outside.

【0003】そこで、この断熱・防音対策として、屋根
や壁面の構造に加え、開口部材である玄関扉にも、断熱
性・防音性を兼ね備えたものが提案されている。この種
の断熱・防音扉の一例として、従来、扉内部にロックウ
ールやグラスウールを入れたものがあった。また、水酸
化アルミ紙製で厚さ方向に貫通して多数の開口を有する
ハニカム状のペーパーコアを扉内部に入れたものや、ペ
ーパーコア無しに発泡体を入れたものもあった。
[0003] As a measure against such heat insulation and soundproofing, an entrance door as an opening member having both heat insulating and soundproofing properties has been proposed in addition to the structure of the roof and the wall surface. As one example of this kind of heat insulating / soundproof door, there has been a door in which rock wool or glass wool is put inside the door. Some honeycomb paper cores made of aluminum hydroxide paper and penetrating in the thickness direction and having a large number of openings were placed inside the door, and some were foamed without the paper cores.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、扉内部
にロックウールやグラスウールを入れた扉の場合、その
ロックウール等のブロックを多数本(例えば20本程
度)並べて構成する必要があり、作業が煩雑であった。
しかも、ガラス繊維が含まれるため、それにより作業者
がかゆみを感じることもあった。
However, in the case of a door in which rock wool or glass wool is placed inside the door, it is necessary to arrange a large number (for example, about 20) of blocks of such rock wool and the like, and the work is complicated. Met.
In addition, since glass fibers are included, the operator may feel itching.

【0005】一方、扉内部にペーパーコアを単に入れた
扉の場合、ペーパーコアのハニカム状開口が空気のみで
あるから、熱を貫流させ、音を伝播し易いという不都合
があった。さらに、空間領域をウレタン等により注入発
泡させる場合は、扉の形を構成した後に注入発泡させて
いたので、工程数が増えるものであった。
On the other hand, in the case of a door in which a paper core is simply inserted inside the door, since the honeycomb-shaped opening of the paper core is made only of air, there is an inconvenience that heat can flow through and the sound is easily transmitted. Further, in the case of injecting and foaming the space region with urethane or the like, the number of steps is increased because the injection molding is performed after forming the shape of the door.

【0006】本発明は、上記事情に鑑みてなされたもの
で、その主たる目的は、製作が容易で、比較的安価且つ
軽量で、断熱性や防音性を向上させた建物用断熱・防音
扉を提供することにある。
The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a heat insulating and soundproof door for a building which is easy to manufacture, relatively inexpensive and lightweight, and has improved heat insulating and soundproofing properties. To provide.

【0007】[0007]

【課題を解決するための手段】上記課題を解決するため
に、本発明の断熱・防音扉は、厚さ方向に貫通して多数
の開口を有するハニカム状のペーパーコアを備え、この
ペーパーコアは、厚さ方向両端面に設けられる一対の表
面パネル間に挟まれて配置され、表面パネルの裏面に塗
布された発泡系硬質ウレタンフォームにて表面パネルに
接着され、ペーパーコアのハニカム穴には、発泡された
前記発泡系硬質ウレタンフォームが充填されることを特
徴とする。
Means for Solving the Problems In order to solve the above problems, a heat insulating / soundproof door of the present invention includes a honeycomb-shaped paper core having a large number of openings penetrating in a thickness direction. , Placed between a pair of front panels provided on both end faces in the thickness direction, adhered to the front panels with foamed hard urethane foam applied to the back of the front panels, and in the honeycomb holes of the paper core, The foamed rigid urethane foam is filled.

【0008】また、本発明の断熱・防音扉は、厚さ方向
に貫通して多数の開口を有するハニカム状のペーパーコ
アを備え、このペーパーコアは、略矩形枠からなる力骨
の枠内に配置されると共に、厚さ方向両面に設けられる
一対の表面パネル間に挟まれて配置され、各表面パネル
の裏面に塗布された発泡系硬質ウレタンフォームは、表
面パネルとペーパーコアとを接着すると共に、ペーパー
コアのハニカム穴に侵入してペーパーコアと共に芯材を
構成することを特徴とする。
Further, the heat insulating / soundproof door of the present invention includes a honeycomb-shaped paper core having a large number of openings penetrating in a thickness direction, and the paper core is provided in a frame of a force bone composed of a substantially rectangular frame. While being arranged, it is arranged and sandwiched between a pair of front panels provided on both sides in the thickness direction, and the foamed rigid urethane foam applied to the back surface of each front panel adheres the front panel and the paper core. And the core material is formed together with the paper core by penetrating into the honeycomb hole of the paper core.

【0009】[0009]

【発明の実施の形態】以下、本発明の断熱・防音扉1に
ついて、さらに詳細に説明する。図1及び図2は、本発
明の断熱・防音扉1の一実施例が適用された建物用枠付
扉を示し、図1は概略正面図、図2は概略横断面図であ
る。また、図3は、本実施例の扉本体1の主要部を示す
概略分解斜視図である。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the heat insulating and soundproof door 1 of the present invention will be described in more detail. 1 and 2 show a door with a building frame to which an embodiment of a heat insulating / soundproof door 1 of the present invention is applied. FIG. 1 is a schematic front view, and FIG. 2 is a schematic cross-sectional view. FIG. 3 is a schematic exploded perspective view showing a main part of the door main body 1 of the present embodiment.

【0010】本実施例の扉1は、戸建住宅や集合住宅等
における玄関扉として使用されるものである。図1及び
図2に示すように、扉本体1は、その左側部が扉枠2の
左縦枠21に、丁番3を介して回動自在に設けられる。
扉本体1の右側部の上下方向中央部には、ノブを備える
施錠装置11が取り付けられている。また、扉本体1の
左右方向中央部には、上方にのぞき穴12、下方に郵便
受け13が設けられている。
The door 1 of this embodiment is used as a front door in a detached house, an apartment house, or the like. As shown in FIGS. 1 and 2, the left side of the door body 1 is rotatably provided on the left vertical frame 21 of the door frame 2 via the hinge 3.
A locking device 11 having a knob is attached to the center of the right side of the door body 1 in the vertical direction. Further, at the center of the door body 1 in the left-right direction, a peephole 12 is provided above, and a mailbox 13 is provided below.

【0011】扉枠2は、扉1の開放側となる前方部21
a,22aの内寸(扉閉鎖時に扉端面と対向する面で形
成される部分の寸法)が、扉の閉鎖側となる後方部21
b,22bの内寸よりもやや広く形成されている。つま
り、左右(ないし上下)の各枠材21,22(23,2
4)の対向面間の離間距離は、後方部21b,22bよ
り前方部21a,22aが広くなるように、扉枠2の前
後方向中央部にて段差が形成されている。そして、前方
部と後方部との間の段差部には、前方に開放してコ字形
状溝21c,22cが形成されている。このコ字形状溝
21c,22cには、気密パッキン20がはめ込まれて
取り付けられている。よって、左縦枠21に吊り下げら
れた扉1は、その閉鎖状態には、扉1の一方の表面パネ
ル4の周囲に沿って気密パッキン20が当接されること
になる。
The door frame 2 has a front part 21 which is an open side of the door 1.
a, 22a (the size of the portion formed by the surface facing the door end surface when the door is closed) is the rear portion 21 on the closed side of the door.
It is formed slightly wider than the inner dimensions of b and 22b. That is, the left and right (or upper and lower) frame members 21 and 22 (23, 2
In the distance 4) between the opposing surfaces, a step is formed at the center in the front-rear direction of the door frame 2 so that the front portions 21a and 22a are wider than the rear portions 21b and 22b. In the step between the front part and the rear part, U-shaped grooves 21c and 22c are formed to open forward. The hermetic packing 20 is fitted and attached to the U-shaped grooves 21c and 22c. Therefore, in the closed state of the door 1 suspended from the left vertical frame 21, the hermetic packing 20 abuts along the periphery of the one surface panel 4 of the door 1.

【0012】本実施例の断熱・防音扉1は、略矩形状の
枠体からなる力骨5内にペーパーコア6が配置され、力
骨5やペーパーコア6の厚さ方向両面に、それぞれ表面
パネル4を配置して、前記ペーパーコア6を扉1内部に
収容してなる。
In the heat insulating / soundproof door 1 of the present embodiment, a paper core 6 is disposed in a force bone 5 formed of a substantially rectangular frame. The paper core 6 is housed inside the door 1 by disposing the panel 4.

【0013】力骨5は、左右方向に延出して上下に配置
される横力骨51,52と、上下方向に延出して左右に
配置される縦力骨53,54とからなり、これら各力骨
51〜54の端部同士を接合することで略矩形状の枠体
として構成されている。なお、各力骨51〜54は、図
1及び図3に示すように、断面略コ字形状材からなる。
The force bones 5 are composed of lateral force bones 51 and 52 extending vertically and arranged vertically and longitudinal force bones 53 and 54 extending vertically and arranged left and right. The ends of the power bones 51 to 54 are joined together to form a substantially rectangular frame. Each of the power bones 51 to 54 is made of a material having a substantially U-shaped cross section as shown in FIGS.

【0014】扉1の前後面に配置される一対の表面パネ
ル4,4は、図2に示すように、その端部は折り返され
た後(41)、扉1の厚さ方向内側に向けてL字形状に
屈曲され(42)、その屈曲部42が前記力骨5の中央
片に固定されている。そして、各表面パネル4の左右に
おいて前後に離間して配置された前記折り返し部41,
41間には、断面コ字形状の化粧カバー材7が嵌着され
て扉1が構成される。
As shown in FIG. 2, a pair of front panels 4, 4 arranged on the front and rear surfaces of the door 1 are folded back at their ends (41), and then face inward in the thickness direction of the door 1. The bent portion 42 is bent into an L-shape (42), and the bent portion 42 is fixed to the central piece of the power bone 5. The folded portions 41, which are arranged on the left and right sides of each front panel 4 so as to be separated from each other,
A decorative cover material 7 having a U-shaped cross section is fitted between 41 to form the door 1.

【0015】力骨5内に収容されるペーパーコア6は、
厚さ方向に貫通する多数の開口61,61…を有するハ
ニカム構造の芯材である。ペーパーコア6の材質は、水
酸化アルミ紙に限らず、各種の紙を使用できる。ペーパ
ーコア6は、ハニカム構造であるから、実際の使用時
(扉の製作時)まで、蜂の巣状の多数の開口を潰した状
態に圧縮して保管しておくことができ、使用時に引き伸
ばして使用することができる。
[0015] The paper core 6 housed in the power bone 5 comprises:
It is a core material having a honeycomb structure having a large number of openings 61 penetrating in the thickness direction. The material of the paper core 6 is not limited to aluminum hydroxide paper, and various papers can be used. Since the paper core 6 has a honeycomb structure, it can be compressed and stored in a state where many honeycomb-shaped openings are crushed until it is actually used (at the time of manufacturing a door). can do.

【0016】扉1の製作には、まず各表面パネル4の裏
面(扉構成時における内面)側に、発泡系硬質ウレタン
フォーム8を塗布する。この発泡系硬質ウレタンフォー
ム8は、湿気等で発泡硬化する1液タイプよりも、反応
速度が速い2液型が好適に使用される。
In manufacturing the door 1, first, a foam-type hard urethane foam 8 is applied to the back surface (the inner surface when the door is formed) of each front panel 4. As the foamed rigid urethane foam 8, a two-pack type having a higher reaction rate is preferably used than a one-pack type which is foamed and cured by moisture or the like.

【0017】一対の表面パネル4に発泡系硬質ウレタン
フォーム8(なお、図2における二点鎖線は塗布直後の
状態を示す)を塗布すると同時に、発泡が開始されるの
で、即座に表面パネル4,4間にペーパーコア6を配置
する。これにより、ペーパーコア6を芯材としたサンド
イッチ構造となり、ペーパーコア6のハニカム穴61は
一対の表面パネル4,4間で塞がれたような状態とな
る。そして、熱圧締プレス(例えば70〜80℃程度)
を施し、扉端部に前記化粧カバー材7をはめることで完
成させる。これにより、発泡系硬質ウレタンフォーム8
は、ペーパーコア6の多数の開口61内に進入、充填さ
れ硬化する。つまり、一対の表面パネル4,4に塗布さ
れた発泡系硬質ウレタンフォーム8がそれぞれ、ペーパ
ーコア6の各穴61に入り込むことになる。しかも、発
泡系硬質ウレタンフォーム8にて、ペーパーコア6と表
面パネル4との接着も確実になされる。
The foaming is started simultaneously with the application of the foamed hard urethane foam 8 (the double-dashed line in FIG. 2 shows the state immediately after the application) to the pair of front panels 4, so that the front panels 4, 4 The paper core 6 is arranged between the four. As a result, a sandwich structure using the paper core 6 as a core material is obtained, and the honeycomb holes 61 of the paper core 6 are in a state of being closed between the pair of front panels 4. And a hot pressing press (for example, about 70 to 80 ° C)
And applying the decorative cover material 7 to the end of the door to complete the process. As a result, the foamed rigid urethane foam 8
Enters the many openings 61 of the paper core 6, is filled and hardened. That is, the foamed hard urethane foam 8 applied to the pair of front panels 4 and 4 respectively enters the holes 61 of the paper core 6. Moreover, the bonding between the paper core 6 and the surface panel 4 is reliably performed by the foamed hard urethane foam 8.

【0018】発泡系硬質ウレタンフォーム8を用いるた
め、従前のロックウールの場合のような連続気泡ではな
く、独立気泡の充填材となる。よって、断熱性、防音性
において優れた効果を期待できる。また、発泡系硬質ウ
レタンフォーム8に自己消化性等のものを使用すれば、
金属製の枠材やパネル等と共に防火戸(特定防火設備)
としての機能も期待できる。
Since the foamed rigid urethane foam 8 is used, it becomes a closed-cell filler instead of open cells as in the case of conventional rock wool. Therefore, excellent effects in heat insulation and sound insulation can be expected. Also, if the foamed rigid urethane foam 8 is made of a material such as self-digestible,
Fire doors (specified fire prevention equipment) with metal frames and panels
Function can also be expected.

【0019】このように、本実施例では、表面パネル4
の各内面側に発泡系硬質ウレタンフォーム8を発泡させ
ながら塗布し、ペーパーコア6を芯材としたサンドイッ
チ構造とした。そして、ペーパーコア6内部に発泡系硬
質ウレタンフォーム8が充填されるようにすると共に、
その発泡系硬質ウレタンフォーム8にてペーパーコア6
と表面パネル4とを接着させるようにした。
As described above, in this embodiment, the front panel 4
The foamed hard urethane foam 8 was applied to each inner surface side while being foamed to form a sandwich structure using the paper core 6 as a core material. Then, while the foamed hard urethane foam 8 is filled inside the paper core 6,
A paper core 6 made of the foamed rigid urethane foam 8
And the front panel 4 were adhered.

【0020】これにより、断熱性については、ペーパー
コア6内部に発泡系硬質ウレタンフォーム8を充填する
ことで、空気の移動を完全に拘束できるため、断熱性能
が向上する。
As a result, with respect to the heat insulating property, the movement of air can be completely restrained by filling the foamed hard urethane foam 8 inside the paper core 6, so that the heat insulating performance is improved.

【0021】また、防音性については、扉1に音波が衝
突したとき、ペーパーコア6内部の発泡系硬質ウレタン
フォーム8が振動し、音エネルギーを熱エネルギーに変
換し吸収するので、ペーパーコア6内部が中空時よりも
防音性能は向上する。
As for soundproofing properties, when a sound wave collides with the door 1, the foamed hard urethane foam 8 inside the paper core 6 vibrates and converts sound energy into heat energy and absorbs it. However, the soundproofing performance is improved as compared with the case of the hollow.

【0022】さらに、従前はウレタン系・エポキシ系等
の接着剤でペーパーコアを表面パネルに接着して扉を構
成するか、或いはパーパーコア無しに、力骨を配した溶
接組み扉を構成した後に発泡材を注入発泡させていた
が、本実施例では、発泡系硬質ウレタンフォーム8を接
着剤の代わりに使用し、ペーパーコア6と表面パネル4
を接着すると共に、ペーパーコア6内に発泡系硬質ウレ
タンフォーム8を充填することができる。しかも、扉1
の製造工程数を、従前よりも削減することができる。
Further, conventionally, a paper core is adhered to the surface panel with an adhesive such as urethane or epoxy to form a door, or a welded door having a strong bone without a perper core is formed and then foamed. In this embodiment, the foamed hard urethane foam 8 is used instead of the adhesive, and the paper core 6 and the surface panel 4 are used.
And the foamed hard urethane foam 8 can be filled in the paper core 6. And door 1
Can be reduced in number of manufacturing steps as compared to before.

【0023】[0023]

【発明の効果】以上詳述したとおり、本発明の断熱・防
音扉によれば、製作が容易で、比較的安価且つ軽量で、
断熱性や防音性を向上させることができる。
As described in detail above, according to the heat insulating and soundproof door of the present invention, it is easy to manufacture, relatively inexpensive and lightweight,
Heat insulation and sound insulation can be improved.

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

【図1】本発明の断熱・防音扉の一実施例が適用された
建物用枠付扉の正面図である。
FIG. 1 is a front view of a door with a building frame to which an embodiment of a heat insulating / soundproof door of the present invention is applied.

【図2】図1の断熱・防音扉の内部構造を示す横断面図
である。
FIG. 2 is a cross-sectional view showing the internal structure of the heat insulating and soundproof door of FIG.

【図3】図1の扉本体の主要部概略を示す分解斜視図で
ある。
FIG. 3 is an exploded perspective view schematically showing a main part of the door main body of FIG.

【符号の説明】[Explanation of symbols]

1 扉(断熱・防音扉) 2 扉枠 3 丁番 4 表面パネル 5 力骨 6 ペーパーコア 8 発泡系硬質ウレタンフォーム 61 開口(ハニカム穴) DESCRIPTION OF SYMBOLS 1 Door (insulated / soundproof door) 2 Door frame 3 Hinge 4 Surface panel 5 Power bone 6 Paper core 8 Foamed hard urethane foam 61 Opening (honeycomb hole)

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 厚さ方向に貫通して多数の開口を有する
ハニカム状のペーパーコアを備え、 このペーパーコアは、厚さ方向両端面に設けられる一対
の表面パネル間に挟まれて配置され、表面パネルの裏面
に塗布された発泡系硬質ウレタンフォームにて表面パネ
ルに接着され、 ペーパーコアのハニカム穴には、発泡された前記発泡系
硬質ウレタンフォームが充填されることを特徴とする断
熱・防音扉。
1. A paper core having a honeycomb shape having a large number of openings penetrating in a thickness direction, the paper core being sandwiched between a pair of surface panels provided on both end surfaces in a thickness direction, The foamed hard urethane foam applied to the back surface of the front panel is adhered to the front panel, and the honeycomb hole of the paper core is filled with the foamed hard polyurethane foam. door.
【請求項2】 厚さ方向に貫通して多数の開口を有する
ハニカム状のペーパーコアを備え、 このペーパーコアは、略矩形枠からなる力骨の枠内に配
置されると共に、厚さ方向両面に設けられる一対の表面
パネル間に挟まれて配置され、 各表面パネルの裏面に塗布された発泡系硬質ウレタンフ
ォームは、表面パネルとペーパーコアとを接着すると共
に、ペーパーコアのハニカム穴に侵入してペーパーコア
と共に芯材を構成することを特徴とする断熱・防音扉。
2. A honeycomb paper core having a number of openings penetrating in a thickness direction, wherein the paper core is disposed in a frame of a force bone composed of a substantially rectangular frame, and has both surfaces in a thickness direction. The foamed hard urethane foam applied between the pair of front panels provided on the back surface of each front panel adheres to the front panel and the paper core, and penetrates into the honeycomb holes of the paper core. A heat insulating and soundproof door characterized by comprising a core material together with a paper core.
JP2001078346A 2001-03-19 2001-03-19 Heat and sound insulating door Pending JP2002276255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001078346A JP2002276255A (en) 2001-03-19 2001-03-19 Heat and sound insulating door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001078346A JP2002276255A (en) 2001-03-19 2001-03-19 Heat and sound insulating door

Publications (1)

Publication Number Publication Date
JP2002276255A true JP2002276255A (en) 2002-09-25

Family

ID=18934972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001078346A Pending JP2002276255A (en) 2001-03-19 2001-03-19 Heat and sound insulating door

Country Status (1)

Country Link
JP (1) JP2002276255A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101084614B1 (en) 2009-04-27 2011-11-17 (주)불끄레 A fireproof door
CN108952510A (en) * 2018-07-26 2018-12-07 贵州华兴禽业有限责任公司 A kind of dedicated radiator structure of fire resistant doorsets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101084614B1 (en) 2009-04-27 2011-11-17 (주)불끄레 A fireproof door
CN108952510A (en) * 2018-07-26 2018-12-07 贵州华兴禽业有限责任公司 A kind of dedicated radiator structure of fire resistant doorsets

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