JPS5914340B2 - Honeycomb core end face treatment method - Google Patents

Description

【発明の詳細な説明】 本発明はハニカムコアを用いた家具・建具又は建材用の
サンドウイツチパネルの製造過程における積層接着の技
術に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lamination adhesion technique in the manufacturing process of sandwich panels for furniture, fittings, or building materials using honeycomb cores.

家具・建具や建材の軽量化を目的として従来その板材に
ハニカムコアを用いたサンドウイツチパネルが採用され
ており、その構造は曲折した紙・金属箔又は樹脂薄板等
による帯状基材から成る平板状ハニカム構造体をコアと
し、コアを構成するハニカム構造体のセル開口部が連接
して形成する平行な端面に、木材・金属又は樹脂等の表
板を貼合し、軽量で丈夫なパネルとしたものである。Sandwich panels using honeycomb cores have traditionally been used for the purpose of reducing the weight of furniture, fittings, and building materials.The structure is a flat plate made of a band-shaped base material made of bent paper, metal foil, resin thin plate, etc. The core is a honeycomb structure, and a top plate made of wood, metal, or resin is laminated to the parallel end faces formed by connecting the cell openings of the honeycomb structure that makes up the core, creating a lightweight and durable panel. It is something.

ハニカム構造体は軽量化を目的とするためそれを構成す
る薄板状基材は厚さを極力薄くすることが要求されるが
、このことは表板とコアとを貼合する場合、接着面が線
状に近似し接着力が極めて小さく５ なることを意味し
、ハニカムコアを用いたサンドウイツチパネルの欠点と
なつている。本発明は上記の問題を解決するためハニカ
ムコアとして使用するハニカム状構造体において、セル
の開口部が連接して形成される端面に耐水耐湿性１０を
有する合成樹脂接着剤を塗布し、その接着剤が柔軟性・
粘着性を有する状態において、更にその接着剤を塗布し
た端面に対し多数の小孔を有するフィルムを貼合圧着し
、接着剤の乾燥固化させることにより、ハニカム状構造
体の端面においてセ１５ル隔壁からフィルム貼合面に沿
つて拡がる平坦な接着剤の接着面を形成させることによ
り、軽量でしかも表板との接着力の大きいコアを得る端
面処理方法を提供するもので、この力法によつて得られ
るハニカムコアを用いたサンドウイツチパネルはコアク
ｏ と表板との結合が強いため軽量で格段の構造強度を
もつことが期待できる。The purpose of a honeycomb structure is to reduce its weight, so the thickness of the thin plate-like base material that makes up the honeycomb structure must be as thin as possible. It approximates a linear shape, meaning that the adhesive strength is extremely small5, which is a drawback of sandwich panels using honeycomb cores. In order to solve the above-mentioned problems, the present invention provides a honeycomb-like structure used as a honeycomb core, in which a synthetic resin adhesive having a water resistance and moisture resistance of 10 is applied to the end face where the cell openings are connected, and the adhesive The agent is flexible and
In the adhesive state, a film having a large number of small holes is bonded and pressed to the end surface coated with the adhesive, and the adhesive is dried and solidified to form cell partition walls on the end surface of the honeycomb-like structure. By forming a flat adhesive surface that spreads along the film bonding surface, this method provides an edge treatment method that obtains a lightweight core with strong adhesive strength to the top plate. The resulting sandwich panel using the honeycomb core is expected to be lightweight and have remarkable structural strength because the bond between the core and the top plate is strong.

以下図面により本発明を説明する。The present invention will be explained below with reference to the drawings.

第１図は本発明によるハニカムコアの端面処理方法を実
施する装置の一例を示すもので、展張さフ５ れたハニ
カム状構造体よりなるコア材１は供給ロール２により矢
印方向に送り出され、走路の上下に配設されたロールコ
ータ等の塗工装置３、３の塗布ロール４、４により、コ
ア材１のセル開口部が連接して形成される上下端面に耐
水耐湿性を有３０する接着剤の溶液が塗布される。FIG. 1 shows an example of an apparatus for implementing the honeycomb core end face treatment method according to the present invention, in which a core material 1 made of a stretched honeycomb-like structure is sent out in the direction of the arrow by a supply roll 2. Application rolls 4 of coating devices 3, 3 such as roll coaters disposed above and below the running track provide water and moisture resistance 30 to the upper and lower end surfaces formed by connecting the cell openings of the core material 1. A solution of adhesive is applied.

塗工装置３の設備数は塗布する溶液と回数により増減す
ることができる。接着剤を塗布されたコア材１の上下端
面には夫々コア材１の進行速度と同調して多くの小孔を
有するフィルム５、５を供給され、鴎着ロー３５ル６に
より貼合圧着される。コア材１の端面に塗布された接着
剤はその溶媒が蒸散するに従つて流動性を失ない第２図
ａのようにセル隔壁の端縁に付着層７，７を形成するが
、コア材１の両端面にフイルム５，５が貼合圧着される
ことにより柔軟性・粘着性を有する状態にある接着剤の
付着層７，７はその粘着性と粘着ロールの圧着力とによ
つて第２図ｂのようにフイルム５，５の面に沿つて拡が
り、フイルム５，５に対して平担で広い接着面を形成す
る。The number of coating devices 3 can be increased or decreased depending on the solution to be coated and the number of times. Films 5, 5 having many small holes are supplied to the upper and lower end surfaces of the core material 1 coated with adhesive, respectively, in synchronization with the advancing speed of the core material 1, and are laminated and crimped by a hook roll 35 and a roll 6. Ru. The adhesive applied to the end face of the core material 1 loses its fluidity as the solvent evaporates, forming adhesive layers 7, 7 on the edges of the cell partition walls as shown in Figure 2a. The adhesive layers 7, 7, which have flexibility and tackiness due to the films 5, 5 being bonded and pressure-bonded to both end surfaces of 1, have a tackiness and a pressure bonding force of the adhesive roll. As shown in FIG. 2b, it spreads along the surfaces of the films 5, 5, forming a flat and wide adhesive surface to the films 5, 5.

フイルム５，５には開孔装置８，８により予め多数の小
孔が穿設されており、前記接着面での接着剤付着層７，
７からの溶媒蒸散を促進するので接着剤の乾燥固化が均
等且つ速かに進行する。図中９はフイルム５の巻戻し装
置、１０はフイルムのガイドロールである。又供給され
るコア材１の後端縁の通過直後において上下のフイルム
５，５を互に熱融着してその融着部を切断するシールカ
ツト装置１１が貼着ロール６の前段に設けられる。開孔
装置８は針ロールと針受ロールの組合せによるもの放電
方式によるもの等が応用でき、本実施例のように貼着工
程と併設する代りに予め開孔処理を完了したフイルム巻
取を使用する場合はこの開孔装置８は不要である。第３
図は本発明によつて得られる端面処理されたハニカムコ
アの外観を示す。A large number of small holes are previously punched in the films 5, 5 by hole punching devices 8, 8, and the adhesive adhesion layer 7,
Since solvent evaporation from 7 is promoted, drying and solidification of the adhesive proceeds evenly and quickly. In the figure, 9 is a rewinding device for the film 5, and 10 is a guide roll for the film. Further, a seal cut device 11 is provided in front of the pasting roll 6, which heat-seals the upper and lower films 5, 5 to each other and cuts the fused portion immediately after the trailing edge of the supplied core material 1 passes through. The hole punching device 8 can be a combination of a needle roll and a needle guide roll, or one based on an electric discharge method, and instead of being installed in conjunction with the pasting process as in this embodiment, a film winding device that has been punched in advance is used. In this case, this hole punching device 8 is not necessary. Third
The figure shows the appearance of an end-treated honeycomb core obtained by the present invention.

本発明においてコア材１の端面に塗布する接着剤は乾燥
固化後において耐水耐湿が秀れ、適度の強度と弾力性を
必要とすると共に、コア材１を構成する紙等の素材に対
しては接着性の高いことが必要である。In the present invention, the adhesive applied to the end surface of the core material 1 needs to have excellent water and moisture resistance after drying and solidification, and has appropriate strength and elasticity, and is also required to be suitable for materials such as paper that make up the core material 1. High adhesiveness is required.

又溶媒としては有機溶剤、水でもよく、常温又は加熱で
蒸発して接着剤を容易に乾燥固化すると共に一定時間溶
液に粘度をもたせ接着剤が柔軟性と粘着性を有する状態
を保つことが必要である。同一端面に２回以上塗布する
場合は１回目よりも２回目の付着層の方が拡がりやすい
ので、２回目の塗布量を増加して接着面を効果的に拡げ
ることができる。本発明により端面処理されたハニカム
コアの実施例として次のようなものがある。The solvent may be an organic solvent or water, and it is necessary to evaporate at room temperature or heat to easily dry and solidify the adhesive, and to maintain the adhesive's flexibility and tackiness by imparting viscosity to the solution for a certain period of time. It is. If the same end face is coated two or more times, the second coat spreads more easily than the first coat, so the amount of the second coat can be increased to effectively spread the adhesive surface. Examples of honeycomb cores whose end faces have been treated according to the present invention are as follows.

実施例 １ 基材にセミケミカルパルプ中芯原紙１２５９／ｗｌを用
いセルサイズ１４ｍ１のロールコアの端面に粘度１５０
００Ｃ．Ｐ（１５ｐａ−ｓ）の水性ビニールウレタン溶
液をロールコーターで２回塗布して直ちに、直径０．３
詣の針孔を５ｍｍ間隔であけた厚味５０１ｔｍの変性ポ
リエチレンフイルムを貼着し１日間常温で放置する。Example 1 Semi-chemical pulp core base paper 1259/wl was used as the base material, and the end face of a roll core with a cell size of 14 m1 had a viscosity of 150.
00C. P (15 pa-s) aqueous vinyl urethane solution was applied twice with a roll coater and immediately coated with a diameter of 0.3
A modified polyethylene film with a thickness of 501 tm with needle holes made at 5 mm intervals was attached and left at room temperature for one day.

塗布量は片面１５０ｇ／Ｔｒｌで第３図のようにコア材
１の端面に接着剤で形成された付着層７にフイルム５が
接着しているが、接着面の巾は１．５〜２．５ｍｍに達
している。このような端面処理を行なつたハニカムコア
を１ケ月放置後、表板として０．６ｍｍの亜鉛鋼板をホ
ツトプレスで１２０℃、１０分間、プレス圧１．５ｋｇ
ｆ／ＣＩＬ（１４７ｋｐａ）で接着したサンドウイツチ
パネル（第４図）の接着力を端面未処理と比較すると常
態引張接着力は２倍に、耐湿引張接着力（常温、１００
％冊、で１ケ月放置）は７倍以上に向上した。実施例
２ 実施例１と同等のロールコアの端面に粘度１５０００Ｃ
．Ｐ（１５ｐａ−ｓ）の水性ビニールウレタン溶液をロ
ールコータで２回塗布して直ちに、直径０．３ｍＴ１の
針孔を５ｍｍ間隔であけた一般包装用厚昧２０μｍのポ
リエチレンフイルムを貼着し２日間常温で放置する。The coating amount is 150 g/Trl on one side, and as shown in FIG. 3, the film 5 is adhered to the adhesion layer 7 formed with adhesive on the end face of the core material 1, and the width of the adhesion surface is 1.5 to 2. It has reached 5mm. After the honeycomb core with such end face treatment was left for one month, a 0.6 mm zinc steel plate was hot pressed at 120°C for 10 minutes at a pressure of 1.5 kg as a top plate.
Comparing the adhesive strength of the sandwich panel (Fig. 4) bonded with f/CIL (147 kpa) to that of the untreated end surface, the normal tensile adhesive strength is doubled, and the moisture-resistant tensile adhesive strength (at room temperature, 100 kpa) is
% of books left unused for one month) improved by more than 7 times. Example
2 A viscosity of 15000C was applied to the end face of the roll core equivalent to Example 1.
．． P (15 pa-s) aqueous vinyl urethane solution was applied twice using a roll coater, and immediately a polyethylene film with a thickness of 20 μm for general packaging with needle holes of 0.3 m T1 in diameter at 5 mm intervals was attached for 2 days. Leave it at room temperature.

塗布量は片面１５０９／イで第３図に示す付着層７のフ
イルム５の接着面は巾１．５〜２．５ｍｍ１こ達してい
る。このような端面処理を行なつたハニカムコアを１ケ
月放置後ポリエチレンフイルムを剥離し、表板として６
ｍＩのベニヤに水性ビニールウレタンを２００９／ｄ塗
布して冷圧で接着して別の接着層１３を形成したサンド
ウイツチパネル（第５図）の引張接着力を端面未処理と
比較すると常態引張接着力は２倍に、耐湿引張接着力は
３倍に向上した。実施例 ３ 実施例１と同等のロールコアの端面に、ブチラール変成
フエノール樹脂接着剤で粘度を１５０００Ｃ．Ｐ（１５
ｐａ−ｓ）に保つた接着剤をロールコータで２回塗布し
て直ちに、直径０．３１１の針孔を５ｍ１間隔であけた
５０μｍの変性ポリエチレンフイルムを貼着し２日間常
温で放置する。The coating amount was 1,509/l per side, and the adhesive surface of the film 5 of the adhesion layer 7 shown in FIG. 3 had a width of 1.5 to 2.5 mm. After the honeycomb core with such end face treatment was left for one month, the polyethylene film was peeled off and the top plate was used as a top plate.
Comparing the tensile adhesion strength of a sandwich panel (Fig. 5) in which 2009/d water-based vinyl urethane is coated on mI veneer and bonded by cold pressure to form another adhesive layer 13 with that of an untreated end surface, normal tensile adhesion is observed. The strength was doubled, and the moisture-resistant tensile adhesive strength was tripled. Example 3 A butyral-modified phenolic resin adhesive was applied to the end face of a roll core similar to that of Example 1 to a viscosity of 15,000C. P(15
Immediately after applying the adhesive maintained at a constant temperature of pa-s twice using a roll coater, a modified polyethylene film of 50 μm with needle holes of 0.311 mm in diameter spaced at intervals of 5 ml was attached and left at room temperature for 2 days.

塗布量は片面１８０ｆ！／イで第３図に示す付着層７の
フイルム５の接着面は巾２．０〜３．０ｍｍ１こ達して
いる。このような端面処理を行なつたハニカムコアを１
ケ月放置後、表板として０．６Ｕ１亜鉛鋼板をホツトプ
レスで１６０℃、３０分間、プレス圧１．５ｋｇｆ／Ｃ
ｉｉ（１４７ｋｐａ）で接着したサンドウイツチパネル
は引張接着力は極めて高く、１００（！）コア破断であ
り、耐熱性も強く、構造用として使用できるものであつ
た。このように本発明によるハニカムコアの端面処理方
法を施すことによりそのコアを使用したサンドウイツチ
パネルは表板とコアの接着面積が極めて大きく、したが
つて引張接着力が高く、特に耐湿引張接着力は端面未処
理の場合に比べ格段に優位にあり、又表板に金属を用い
る場合直接コアに接触しないため腐食が少なく、耐久性
もよい。The amount of coating is 180f on one side! The adhesive surface of the film 5 of the adhesive layer 7 shown in FIG. 3 has a width of 2.0 to 3.0 mm. One honeycomb core with such end face treatment
After being left for several months, a 0.6U1 galvanized steel plate was hot pressed at 160℃ for 30 minutes as a top plate at a pressure of 1.5kgf/C.
The sandwich panel bonded at 147 kpa had extremely high tensile adhesion strength, 100 (!) core breakage, strong heat resistance, and could be used for structural purposes. As described above, by applying the honeycomb core end face treatment method according to the present invention, the sandwich panel using the core has an extremely large adhesion area between the top plate and the core, and therefore has high tensile adhesive strength, especially moisture-resistant tensile adhesive strength. This is significantly superior to the case where the end surface is untreated, and when the top plate is made of metal, it does not come into direct contact with the core, resulting in less corrosion and good durability.

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

第１図は本発明によるハニカムコアの端面処理方法を実
施する装置の一例を示す側面概要図、第２図はハニカム
コアの端面に塗布された接着剤の付着層の変化を示すコ
アの縦断面図、第３図は本発明によつて得られる端面処
理されたハニカムコアの実施例を示す外観斜視図、第４
図、第５図は本発明によつて得られる端面処理されたハ
ニカムコアを用いたサンドウイツチパネルの実施例の縦
断面図。 １・・・・・・コア材、２・・・・・・供給ロール、３
・・・・・・塗工装置、４・・・・・・塗布ロール、５
・・・・・・多くの小孔を有するフイルム、６・・・・
・・貼着ロール ７・・・・・・接着剤の付着層、８・
・・・・・開孔装置、９・・・・・・巻戻装置、１０・
・・・・・ガイドロール、１１・・・・・・シールカツ
ト装置、１２・・・・・・表板、１３・・・・・・接着
層。Fig. 1 is a schematic side view showing an example of an apparatus for implementing the honeycomb core end face treatment method according to the present invention, and Fig. 2 is a longitudinal cross section of the core showing changes in the adhesive layer applied to the end face of the honeycomb core. Figure 3 is an external perspective view showing an example of a honeycomb core with end-face treatment obtained by the present invention, and Figure 4 is
FIG. 5 is a longitudinal cross-sectional view of an embodiment of a sandwich panel using a honeycomb core whose end face has been treated according to the present invention. 1... Core material, 2... Supply roll, 3
...Coating device, 4...Coating roll, 5
...Film with many small holes, 6...
... Adhesive roll 7 ... Adhesive layer, 8.
...hole punching device, 9... rewinding device, 10.
... Guide roll, 11 ... Seal cut device, 12 ... Top plate, 13 ... Adhesive layer.

Claims (1)

【特許請求の範囲】[Claims] １ ハニカム状構造体において、セルの開口部が連接し
て形成される端面に耐水耐湿性を有する合成樹脂接着剤
（以下接着剤という）を液状で塗布し、塗布された接着
剤が柔軟性・粘着性を有する状態において、前記接着剤
を塗布した端面に対し多数の小孔を有するフィルムを貼
合圧着し、接着剤を乾燥固化させることにより、前記ハ
ニカム状構造体の端面においてセル隔壁からフィルム貼
合面に沿つて広がる平担な接着剤の接着面を形成させる
ことを特徴とするハニカムコアの端面処理方法。1 In a honeycomb-like structure, a synthetic resin adhesive (hereinafter referred to as adhesive) having water and moisture resistance is applied in liquid form to the end face formed by connecting cell openings, and the applied adhesive has flexibility and moisture resistance. In a sticky state, a film having a large number of small holes is bonded and pressed to the end surface coated with the adhesive, and the adhesive is dried and solidified, thereby removing the film from the cell partition wall at the end surface of the honeycomb structure. A method for treating the end face of a honeycomb core, the method comprising forming a flat adhesive surface that spreads along the bonding surface.