JP2013217104A - Method of manufacturing sound insulation door - Google Patents

Method of manufacturing sound insulation door Download PDF

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JP2013217104A
JP2013217104A JP2012088675A JP2012088675A JP2013217104A JP 2013217104 A JP2013217104 A JP 2013217104A JP 2012088675 A JP2012088675 A JP 2012088675A JP 2012088675 A JP2012088675 A JP 2012088675A JP 2013217104 A JP2013217104 A JP 2013217104A
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core material
outer frame
sound insulation
decorative
plates
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Kenichiro Okuma
賢一郎 大隈
Koji Ikeda
弘二 池田
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Okuma Corp
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Okuma Corp
Okuma Machinery Works Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a sound insulation door manufacturing method which can efficiently manufacture the sound insulation door with a smaller number of steps than that in the conventional soundproof door manufacturing method.SOLUTION: A sound insulation door manufacturing method includes steps of: preparing two single-structured decorative plates (2, 3) beforehand and putting one decorative plate (2) on a working surface; preparing beforehand a core material (1) including an outer frame (10) and honeycomb-shaped paper core plates (101, 102) bonded to the inside of the outer frame (10) and having a plurality openings (103) on both front and rear sides, and applying an adhesive to the surfaces on both front and rear sides of the outer frame (10) of the core material (1) and the edges of the openings (103) on both front and rear sides of the paper core plates (101, 102); setting and mounting the adhesive-applied core material (1) on the top surface of the one decorative plate (2) on the working surface; setting and mounting the other decorative plate (3) on the mounted core material (1); and pressing the whole of a laminate consisting of the core material (1) and the decorative plates (2, 3) in the thickness direction to bond them.

Description

本発明は、遮音扉の製造方法に関するものである。更に詳しくは、従来の遮音扉の製造方法よりも少ない工程で効率よく製造できる遮音扉の製造方法に関する。   The present invention relates to a method for manufacturing a sound insulation door. More specifically, the present invention relates to a method for manufacturing a sound insulating door that can be efficiently manufactured with fewer steps than a conventional method for manufacturing a sound insulating door.

遮音扉又は防音扉は、一般家屋の他、特に静粛さが求められる病院やホテル、騒音が発生する機械室等の扉として広く使用されている。このような遮音扉又は防音扉の一例をあげれば、例えば特許文献１で開示されている防音ドアがある。   In addition to general houses, soundproof doors or soundproof doors are widely used as doors for hospitals, hotels, and machine rooms where noise is particularly required. An example of such a soundproof door or a soundproof door is a soundproof door disclosed in Patent Document 1, for example.

特許文献１の防音ドアは、ドア本体<1>を、外枠<2>と、外枠<2>の内外両面に添設してなる面板<3,4>との二重壁構造に形成し、ドア本体<1>内に内外両面板<3,4>間に固着される補強桟<5,6>を配設し、補強桟<5,6>を静的圧縮弾性率が特定の範囲内の弾性体にて形成し、固体伝搬音による遮音性能の低下を軽減させるというものである。   The soundproof door of Patent Document 1 has a door body <1> formed in a double wall structure with an outer frame <2> and face plates <3,4> attached to both the inner and outer surfaces of the outer frame <2>. In the door body <1>, a reinforcing bar <5,6> fixed between the inner and outer double-sided plates <3, 4> is disposed, and the reinforcing bar <5,6> has a specific static compression modulus. It is formed of an elastic body within the range to reduce a decrease in sound insulation performance due to solid propagation sound.

特開平１０−６１３４２号公報JP 10-61342 A

前記従来の防音ドアは、固体伝搬音による遮音性能の低下を軽減させることはできるが、一方で次のような課題があった。
すなわち、ドア本体<1>は、単板積層材からなる外枠<2>と、外枠<2>の内外両面に添設される中質繊維板からなる面板<3,4>との二重壁構造に形成され、外枠<2>には、上下左右間に跨る補強桟<5,6>とが縦横に十字形に配設されているとともに、その空隙にはグラスウール等の吸音部材<7>が充填されている。 The conventional soundproof door can reduce the deterioration of the sound insulation performance due to the solid propagation sound, but has the following problems.
That is, the door body <1> is composed of an outer frame <2> made of a single-plate laminated material and a face plate <3,4> made of medium-quality fiberboard attached to both the inner and outer surfaces of the outer frame <2>. Reinforcing bars <5,6> straddling between the top, bottom, left, and right are formed in a heavy-wall structure, and the outer frame <2> is arranged in a cross shape vertically and horizontally, and in the gap is a sound absorbing member such as glass wool <7> is filled.

前記のような構造の防音ドアを製造する方法は、特には記載がないが、一般的には次のように製造されると考えられる。
図３に示すように、まず、（１）化粧板と遮音シートを接着する等して面板<3,4>と同等の表面板４、５を形成し、（２）一方の表面板４の内面側（図３では上面側）の全面に接着剤を塗布して作業面に置き、（３）内側に補強桟７を固着した外枠６を表面板４の接着剤を塗布した上面に合わせて接着する。 A method for manufacturing the soundproof door having the above-described structure is not particularly described, but is generally considered to be manufactured as follows.
As shown in FIG. 3, first, (1) surface plates 4 and 5 equivalent to the face plate <3,4> are formed by bonding a decorative plate and a sound insulation sheet, and (2) one of the surface plates 4 Apply adhesive on the entire inner surface (upper surface in FIG. 3) and place it on the work surface. (3) Align the outer frame 6 with the reinforcing bar 7 fixed on the inner surface with the upper surface of the surface plate 4 applied with adhesive. And glue.

次に、（４）外枠６の各補強桟７間の空間にグラスウール等の吸音部材８を詰め、（５）他方の表面板５の接着側（図３では下面側）の全面に接着剤を塗布し、その面を外枠６の上面に合わせて接着する。そして、（６）積層したものの全体を各表面板４、５側からプレスして接着する。このように、防音ドアの製造には、前記のような多くの工程を経る必要があり、相当の手間がかかると考えられる。   Next, (4) the space between the reinforcing bars 7 of the outer frame 6 is filled with a sound absorbing member 8 such as glass wool, and (5) an adhesive is applied to the entire surface of the other surface plate 5 on the bonding side (the lower surface side in FIG. 3). Is applied, and the surface thereof is bonded to the upper surface of the outer frame 6. Then, (6) the whole laminated body is pressed and bonded from the surface plates 4 and 5 side. Thus, it is necessary to go through many steps as described above to manufacture the soundproof door, and it is considered that it takes considerable time.

また、前記（２）、（５）の工程において、各表面板４、５の接着側には、作業の手間を省くためにロールコーターを通して接着剤が全面に塗布されるが、吸音部材８については、各表面板４、５に接着してもドアの強度が上がるわけではないため、本来は各表面板４、５に接着する必要はない。また、接着しないでも、遮音性能は問題なく発揮できる。つまり、必要のない部分を接着することになり、その分、接着剤が無駄である。   In the steps (2) and (5), an adhesive is applied to the entire surface of the surface plates 4 and 5 through a roll coater in order to save work. Since it does not necessarily increase the strength of the door even if it is bonded to the surface plates 4 and 5, it is not necessary to bond to the surface plates 4 and 5 originally. Even without bonding, the sound insulation performance can be exhibited without problems. In other words, unnecessary parts are bonded, and the adhesive is wasted accordingly.

（本発明の目的）
本発明は、前記従来の防音ドアの製造における課題を軽減するものであり、従来の防音ドアの製造方法よりも少ない工程で効率よく製造できる遮音扉の製造方法を提供することを目的とする。
また、本発明の他の目的は、前記目的に加えて、外枠及び吸音部材と、各表面板とを接着する際に使用する接着剤に無駄が生じないようにした遮音扉の製造方法を提供することである。 (Object of the present invention)
The present invention alleviates the problems in the manufacture of the conventional soundproof door, and an object of the present invention is to provide a method of manufacturing a soundproof door that can be efficiently manufactured with fewer steps than the conventional method of manufacturing a soundproof door.
In addition to the above object, another object of the present invention is a method for manufacturing a sound insulation door that prevents waste in the adhesive used when the outer frame and the sound absorbing member are bonded to each surface plate. Is to provide.

上記課題を解決するために本発明が講じた手段は次のとおりである。
（１）本発明は、
二枚の一枚構造の化粧板をあらかじめ用意し、当該化粧板のうち一方の化粧板を作業面に置くステップ、
外枠と当該外枠の内側に接着され表裏両側に複数の開口部を有するハニカム状のペーパーコアとを含む芯材をあらかじめ用意し、当該芯材の前記外枠の表裏両側の表面と前記ペーパーコアの表裏両側の前記各開口部縁に接着剤を塗布するステップ、
前記作業面上の前記一方の化粧板の上面に前記接着剤を塗布した芯材を合わせて載置するステップ、
前記載置した芯材の上に前記二枚の化粧板のうち他方の化粧板を合わせて載置するステップ、
前記芯材と前記各化粧板からなる積層体の全体を厚み方向にプレスして接着するステップ、
を含む、遮音扉の製造方法である。 Means taken by the present invention to solve the above problems are as follows.
(1) The present invention
Preparing two decorative sheets with a single structure and placing one of the decorative panels on the work surface;
A core material including an outer frame and a honeycomb-shaped paper core bonded to the inside of the outer frame and having a plurality of openings on both front and back sides is prepared in advance, and the surface of the core material on both the front and back sides of the outer frame and the paper Applying an adhesive to each opening edge on both sides of the core;
Placing the core material coated with the adhesive on the upper surface of the one decorative plate on the work surface,
Placing the other decorative plate out of the two decorative plates on the core material placed above,
A step of pressing and bonding the entire laminate composed of the core material and the decorative plates in the thickness direction;
A method for manufacturing a sound insulation door, including:

（２）本発明は、
芯材を構成しているペーパーコアの厚み方向の中間部にロックウールの層が挟まれている、
前記（１）の遮音扉の製造方法である。 (2) The present invention
A layer of rock wool is sandwiched in the middle part in the thickness direction of the paper core constituting the core material,
It is a manufacturing method of the sound insulation door of said (1).

本明細書及び特許請求の範囲に記載した「作業面」の用語は、例えば単なる作業台の台面のような動かない作業面の他、ベルトコンベヤのベルト上の搬送面のような動きを伴う作業面を含む意味で使用している。   The term “working surface” described in the present specification and claims refers to work involving movement such as a conveying surface on a belt of a belt conveyor, as well as a non-moving working surface such as a platform surface of a work table. It is used in the meaning including the surface.

本発明は、遮音扉の製造において、あらかじめ用意した二枚の一枚構造の化粧板と、同じくあらかじめ用意した外枠とペーパーコアからなる芯材とを積層してプレスし接着するので、遮音扉を従来の防音ドアの一般的な製造方法よりも少ない工程で効率よく製造できる。   In the production of a sound insulation door, the present invention provides a laminate of a single sheet of decorative sheet prepared in advance and a core material composed of an outer frame and a paper core prepared in advance, and presses and bonds them together. Can be efficiently manufactured with fewer steps than a general method for manufacturing a conventional soundproof door.

また、本発明は、製造において、接着剤を芯材の外枠の表裏両側の表面とペーパーコアの表裏両側の各開口部縁に塗布する。したがって、従来のように接着剤を表面板の接着側の全面に塗布するのと相違して、互いに当接し接着する部分だけに塗布されることになるので接着剤に無駄が生じない。   In addition, in the present invention, in production, an adhesive is applied to the front and back surfaces of the outer frame of the core material and to the opening edges of the front and back sides of the paper core. Therefore, unlike the conventional case where the adhesive is applied to the entire surface on the bonding side of the surface plate, the adhesive is applied only to the portions that contact and adhere to each other, so that the adhesive is not wasted.

本発明に係る遮音扉の製造方法を示す説明図。Explanatory drawing which shows the manufacturing method of the sound insulation door which concerns on this invention. 本発明に係る遮音扉の要部断面図。The principal part sectional drawing of the sound insulation door which concerns on this invention. 従来の遮音扉の一般的な製造方法を示す説明図。Explanatory drawing which shows the general manufacturing method of the conventional sound insulation door.

〔実施の形態〕 Embodiment

図１及び図２を参照し、本発明に係る製造方法で製造された遮音扉の構造を図面に示した実施の形態に基づき詳細に説明する。
遮音扉Ａは、芯材１と、芯材１を表裏両側から挟むようにして芯材１に接着された化粧板２、３を備えている。 With reference to FIG.1 and FIG.2, the structure of the sound insulation door manufactured with the manufacturing method which concerns on this invention is demonstrated in detail based on embodiment shown in drawing.
The sound insulation door A includes a core material 1 and decorative plates 2 and 3 bonded to the core material 1 so as to sandwich the core material 1 from both front and back sides.

芯材１は、木製の角材で形成された外枠１０を有している。外枠１０は、二本の長尺材１１、１２と二本の短尺材１３、１４を有し、これらを長方形状に枠組みした構造である。外枠１０の長手方向の中間部には、補強桟１５が長尺材１１、１２の間に架け渡すように短尺材１３、１４と平行に固定されている。   The core material 1 has an outer frame 10 formed of a wooden square. The outer frame 10 has two long materials 11 and 12 and two short materials 13 and 14, and has a structure in which these are framed in a rectangular shape. A reinforcing bar 15 is fixed in parallel with the short members 13 and 14 so as to be bridged between the long members 11 and 12 at an intermediate portion in the longitudinal direction of the outer frame 10.

外枠１０の長手方向の両側には、それぞれ補強桟１５と長尺材１１、１２の半分及び短尺材１３、１４で囲まれた平面視で長方形状の収容空間部１６、１７が形成されている。収容空間部１６、１７には、収容空間部１６、１７と平面視形状がほぼ同じ形状でちょうど収まる大きさの吸音材１８、１９が固定されている。   On both sides in the longitudinal direction of the outer frame 10, rectangular accommodating space portions 16, 17 are formed in plan view surrounded by the reinforcing bars 15, half of the long materials 11, 12 and short materials 13, 14, respectively. Yes. The storage spaces 16 and 17 are fixed with sound-absorbing materials 18 and 19 that are substantially the same shape as the storage space portions 16 and 17 in a plan view and just fit.

吸音材１８、１９は、外枠１０の厚さの約１／３の厚さを有するロックウール板１００を、同じく外枠１０の厚さの約１／３の厚さを有するペーパーコア板１０１、１０２により表裏両側から挟んで接着し、一体化した構造である。ロックウール板１００は、人造の鉱物繊維で形成したもので、ペーパーコア板１０１、１０２は、芯材１としての表裏両面側に多数の開口部１０３が形成された構造である。   The sound-absorbing materials 18 and 19 are made of a rock wool plate 100 having a thickness of about ３ of the thickness of the outer frame 10 and a paper core plate 101 having a thickness of about ３ of the thickness of the outer frame 10. , 102 and bonded from both sides of the front and back. The rock wool plate 100 is made of artificial mineral fibers, and the paper core plates 101 and 102 have a structure in which a large number of openings 103 are formed on both front and back sides as the core material 1.

吸音材１８、１９は、収容空間部１６、１７に収められて固定されている。収容空間部１６、１７を形成している補強桟１５と長尺材１１、１２の半分及び短尺材１３、１４の各内面には接着剤が塗布され、吸音材１８、１９は、この接着剤を塗布し面に対し吸音材１８、１９の外周面（ロックウール板１００とペーパーコア板１０１、１０２を含む側面）を接着することにより、収容空間部１６、１７内に固定されている。なお、吸音材１８、１９の厚さと外枠１０及び補強桟１５の厚さはほぼ同じに設定されており、全体が面一となっている。   The sound absorbing materials 18 and 19 are housed and fixed in the housing spaces 16 and 17. Adhesive is applied to the inner surfaces of the reinforcing bars 15 and the half of the long materials 11 and 12 and the short materials 13 and 14 forming the accommodation space portions 16 and 17, and the sound absorbing materials 18 and 19 Is applied and the outer peripheral surfaces of the sound absorbing materials 18 and 19 (side surfaces including the rock wool plate 100 and the paper core plates 101 and 102) are bonded to the surfaces to be fixed in the housing spaces 16 and 17. In addition, the thickness of the sound absorbing materials 18 and 19 and the thickness of the outer frame 10 and the reinforcing bar 15 are set to be substantially the same, and the whole is flush.

そして、芯材１の表裏側の面には、外枠１０の外形と同じ大きさの化粧板２、３が接着されている。化粧板２、３は一枚構造であり、中密度繊維板（ＭＤＦ：medium density fiberboard）で形成されている。芯材１と化粧板２、３の接着は、芯材１の外枠１０の表裏両側の表面とペーパーコア板１０１、１０２の厚み方向の端部に接着剤を塗布し、表面に接着剤を塗布していない化粧板２、３を接着して行う。   The decorative plates 2 and 3 having the same size as the outer shape of the outer frame 10 are bonded to the front and back surfaces of the core material 1. The decorative plates 2 and 3 have a single-piece structure and are formed of medium density fiberboard (MDF). Adhesion between the core material 1 and the decorative plates 2 and 3 is performed by applying an adhesive to the front and back surfaces of the outer frame 10 of the core material 1 and the thickness direction ends of the paper core plates 101 and 102. This is performed by adhering decorative plates 2 and 3 which are not applied.

この構造の遮音扉Ａの製造方法は次の通りである。
まず、補強桟１５を固定した外枠１０と吸音材１８、１９からなる前記構造の芯材１と、中密度繊維を材料とした一枚構造で長方形状の前記化粧板２、３を遮音扉Ａの構成材料として形成し、あらかじめ用意しておく。 The manufacturing method of the sound insulation door A of this structure is as follows.
First, the core material 1 having the structure consisting of the outer frame 10 to which the reinforcing bar 15 is fixed and the sound absorbing materials 18 and 19 and the rectangular decorative plate 2 and 3 having a single structure made of medium density fibers are used as a sound insulating door. It is formed as a constituent material for A and prepared in advance.

（１）二枚の化粧板２、３のうち一方の化粧板２を作業面であるベルトコンベヤ（図示省略）のベルト面上に載置する。
（２）芯材１を構成する外枠１０の表裏両側の表面と、同じくペーパーコア板１０１、１０２の表裏両側の各開口部１０３縁に、芯材１をロールコーターに通すことにより接着剤を塗布する。 (1) One of the two decorative plates 2 and 3 is placed on the belt surface of a belt conveyor (not shown) as a work surface.
(2) Adhesive is applied by passing the core material 1 through a roll coater on the front and back surfaces of the outer frame 10 constituting the core material 1 and the edges 103 of the paper core plates 101 and 102 on both front and back surfaces. Apply.

（３）ベルトコンベヤのベルト面上に載置している化粧板２の上面に芯材１を合わせて載置する。これにより、芯材１の下側の外枠１０表面と、同じくペーパーコア板１０１、１０２の各開口部１０３縁の何れも接着剤を塗布した部分が化粧板２の上面に当接する。 (3) The core material 1 is placed on the upper surface of the decorative plate 2 placed on the belt surface of the belt conveyor. As a result, the surface of the outer frame 10 on the lower side of the core 1 and the edge of each opening 103 of the paper core plates 101 and 102 are in contact with the upper surface of the decorative plate 2.

（４）芯材１の上に他方の化粧板３を合わせて載置する。これにより、化粧板３の下面が芯材１の上側の外枠１０表面と、同じくペーパーコア板１０１、１０２の各開口部１０３縁の何れも接着剤を塗布した部分に当接する。 (4) Place the other decorative board 3 on the core material 1 together. As a result, the lower surface of the decorative plate 3 abuts the surface of the upper outer frame 10 of the core member 1 and the edges of the openings 103 of the paper core plates 101 and 102, respectively, on the portion where the adhesive is applied.

（５）前記のように形成した芯材１と各化粧板２、３からなる積層体をベルトコンベヤでプレス機（図示省略）へ送り、積層体全体を厚み方向にプレスし、芯材１と各化粧板２、３を接着する。 (5) The laminated body composed of the core material 1 and the decorative plates 2 and 3 formed as described above is sent to a press machine (not shown) by a belt conveyor, and the entire laminated body is pressed in the thickness direction. The decorative plates 2 and 3 are bonded together.

このように、本発明に係る遮音扉の製造方法によれば、あらかじめ作成し用意した二枚の一枚構造の化粧板２、３と、同じくあらかじめ作成し用意した外枠１０とペーパーコア板１０１、１０２からなる芯材１と、を積層してプレスし接着するので、遮音扉Ａを従来の防音ドアの一般的な製造方法よりも少ない工程で効率よく製造できる。   As described above, according to the method for manufacturing a sound insulation door according to the present invention, two single-panel decorative plates 2 and 3 prepared and prepared in advance, and an outer frame 10 and a paper core plate 101 prepared and prepared in advance. , 102 are laminated, pressed, and bonded, so that the sound insulation door A can be efficiently manufactured with fewer steps than a general method for manufacturing a conventional soundproof door.

また、本発明に係る遮音扉の製造方法は、接着剤を芯材１の外枠１０の表裏両側の表面とペーパーコア板１０１、１０２の表裏両側の各開口部１３縁に塗布するので、従来のように接着剤を表面板の接着側の全面に塗布するのと相違して、互いに当接し接着する部分だけに塗布されることになり、接着剤に無駄が生じない。   Moreover, since the manufacturing method of the sound insulation door according to the present invention applies the adhesive to the front and back surfaces of the outer frame 10 of the core material 1 and the edges 13 of the opening portions on the front and back sides of the paper core plates 101 and 102, Unlike the case where the adhesive is applied to the entire surface on the bonding side of the surface plate as described above, the adhesive is applied only to the portions that contact and adhere to each other, so that the adhesive is not wasted.

なお、本明細書で使用している用語と表現は、あくまでも説明上のものであって、なんら限定的なものではなく、本明細書に記述された特徴およびその一部と等価の用語や表現を除外する意図はない。また、本発明の技術思想の範囲内で、種々の変形が可能であるということは言うまでもない。   Note that the terms and expressions used in this specification are merely explanatory and are not limiting at all, and terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to exclude. Further, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

Ａ 遮音扉
１ 芯材
２ 化粧板
３ 化粧板
１０ 外枠
１１、１２ 長尺材
１３、１４ 短尺材
１５ 補強桟
１６、１７ 収容空間部
１８、１９ 吸音材
１００ ロックウール板
１０１、１０２ ペーパーコア板
１０３ 開口部 A Sound insulation door 1 Core material 2 Decorative plate 3 Decorative plate 10 Outer frame 11, 12 Long material 13, 14 Short material 15 Reinforcement beam 16, 17 Accommodating space 18, 19 Sound absorbing material 100 Rock wool plate 101, 102 Paper core plate 103 opening

Claims (2)

二枚の一枚構造の化粧板をあらかじめ用意し、当該化粧板のうち一方の化粧板を作業面に置くステップ、
外枠と当該外枠の内側に接着され表裏両側に複数の開口部を有するハニカム状のペーパーコアとを含む芯材をあらかじめ用意し、当該芯材の前記外枠の表裏両側の表面と前記ペーパーコアの表裏両側の前記各開口部縁に接着剤を塗布するステップ、
前記作業面上の前記一方の化粧板の上面に前記接着剤を塗布した芯材を合わせて載置するステップ、
前記載置した芯材の上に前記二枚の化粧板のうち他方の化粧板を合わせて載置するステップ、
前記芯材と前記各化粧板からなる積層体の全体を厚み方向にプレスして接着するステップ、
を含む、遮音扉の製造方法。 Preparing two decorative sheets with a single structure and placing one of the decorative panels on the work surface;
A core material including an outer frame and a honeycomb-shaped paper core bonded to the inside of the outer frame and having a plurality of openings on both front and back sides is prepared in advance, and the surface of the core material on both the front and back sides of the outer frame and the paper Applying an adhesive to each opening edge on both sides of the core;
Placing the core material coated with the adhesive on the upper surface of the one decorative plate on the work surface,
Placing the other decorative plate out of the two decorative plates on the core material placed above,
A step of pressing and bonding the entire laminate composed of the core material and the decorative plates in the thickness direction;
A method for manufacturing a sound insulation door, comprising: 芯材を構成しているペーパーコアの厚み方向の中間部にロックウールの層が挟まれている、請求項１記載の遮音扉の製造方法。   The method for producing a sound insulation door according to claim 1, wherein a rock wool layer is sandwiched between intermediate portions in the thickness direction of the paper core constituting the core material.
JP2012088675A 2012-04-09 2012-04-09 Method of manufacturing sound insulation door Pending JP2013217104A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106703636A (en) * 2016-12-24 2017-05-24 信宜市现代中兴门业有限公司 Sound-insulation anti-theft door
CN110847786A (en) * 2019-11-23 2020-02-28 任宝泉 Foam metal noise insulation
CN113216806A (en) * 2021-06-15 2021-08-06 安徽忠盛新型装饰材料有限公司 High-strength assembled composite door with laminated structure and assembling method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106703636A (en) * 2016-12-24 2017-05-24 信宜市现代中兴门业有限公司 Sound-insulation anti-theft door
CN106703636B (en) * 2016-12-24 2018-06-08 信宜市现代中兴门业有限公司 Sound insulation antitheft door
CN110847786A (en) * 2019-11-23 2020-02-28 任宝泉 Foam metal noise insulation
CN110847786B (en) * 2019-11-23 2020-12-04 滨州富创科技服务有限公司 Foam metal noise insulation
CN113216806A (en) * 2021-06-15 2021-08-06 安徽忠盛新型装饰材料有限公司 High-strength assembled composite door with laminated structure and assembling method thereof

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