JPH05305980A - Cap for aerosol can - Google Patents
Cap for aerosol canInfo
- Publication number
- JPH05305980A JPH05305980A JP4101416A JP10141692A JPH05305980A JP H05305980 A JPH05305980 A JP H05305980A JP 4101416 A JP4101416 A JP 4101416A JP 10141692 A JP10141692 A JP 10141692A JP H05305980 A JPH05305980 A JP H05305980A
- Authority
- JP
- Japan
- Prior art keywords
- cap
- aerosol
- resin layer
- heat
- polyamide resin
- 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
Links
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ジメチルエーテル（Ｄ
ＭＥ）や液化石油ガス（ＬＰＧ）を噴射剤として内容物
を霧状もしくはムース状で散布するエアゾール缶の上部
に嵌着して使用するキャップに関するものである。The present invention relates to dimethyl ether (D
ME) or liquefied petroleum gas (LPG) as a propellant, and relates to a cap that is used by being fitted onto the upper portion of an aerosol can for spraying the contents in a mist or mousse form.
【０００２】[0002]
【従来技術とその課題】エアゾール缶の噴射剤として
は、従来フロンガスが主流を占めていたが、地球環境問
題からフロンの使用が規制され、それに代わる噴射剤と
してＤＭＥやＬＰＧが使用されるようになった。通常、
エアゾール缶本体は金属単体から形成されているが、使
用する噴射剤によってはエアゾール缶本体の内面へ耐蝕
性に優れた樹脂を塗装したり、プラスチック製の袋を内
装することがなされ、またエアゾール缶の上部に嵌着さ
れるキャップについても耐蝕性を改良するためポリプロ
ピレン膜を被覆した金属板から成形加工することが知ら
れている（実開昭５５−７６０６４号）。2. Description of the Related Art Conventionally, as a propellant for aerosol cans, chlorofluorocarbon has conventionally been the mainstream. However, due to global environmental problems, the use of chlorofluorocarbon is restricted, and DME and LPG are used as alternative propellants. became. Normal,
The body of the aerosol can is made of a single metal, but depending on the propellant used, it is possible to coat the inner surface of the body of the aerosol can with a resin with excellent corrosion resistance, or to put a plastic bag inside. It is known that the cap fitted on the upper part of the mold is molded from a metal plate coated with a polypropylene film in order to improve the corrosion resistance (Japanese Utility Model Publication No. 55-76064).
【０００３】しかしながら、ＤＭＥやＬＰＧは腐蝕性が
極めて強いため、上記ポリプロピレン膜を被覆したキャ
ップでも長時間の保管や使用により樹脂層が一部剥離す
ることがあった。However, since DME and LPG are extremely corrosive, the resin layer may be partly peeled off even when the cap coated with the polypropylene film is stored or used for a long time.
【０００４】[0004]
【課題を解決するための手段】本発明は上記問題点を解
消できるキャップを見出したものでありその要旨とする
ところは、アルミニウム板の少なくとも片面に、エポキ
シ樹脂、脂肪酸またはヒドロキシ置換フェノールからな
る薄膜を３５０℃以上の温度で熱処理した熱変性被膜を
介してポリアミド樹脂層またはポリアミド樹脂層とエチ
レン−ビニルアルコール共重合体樹脂層を順次被覆して
なる積層体を、樹脂層が内面となるように絞り加工して
なるエアゾール缶用キャップにある。DISCLOSURE OF THE INVENTION The present invention has found a cap capable of solving the above problems, and its gist is to provide a thin film comprising an epoxy resin, a fatty acid or a hydroxy-substituted phenol on at least one side of an aluminum plate. A polyamide resin layer or a laminate obtained by sequentially coating a polyamide resin layer and an ethylene-vinyl alcohol copolymer resin layer through a heat-modified coating obtained by heat-treating at a temperature of 350 ° C. or higher, with the resin layer being the inner surface. It is a cap for aerosol cans made by drawing.
【０００５】以下本発明を詳細に説明する。本発明で使
用するアルミニウム板は、加工性や強度面からアルミニ
ウムとマグネシウムとの合金（ＪＩＳＨ０００１による
５０００系）が好適に使用できる。またアルミニウム板
表面には通常のクロメート処理、ジルコニウム処理やチ
タネート処理等の化成処理や電解エッチングなどの物理
的表面処理を施してもよい。板厚は、０．２〜０．７ｍ
ｍ、好ましくは０．３〜０．６ｍｍのものが好適に使用
できる。The present invention will be described in detail below. For the aluminum plate used in the present invention, an alloy of aluminum and magnesium (5000 series according to JIS H0001) can be preferably used in terms of workability and strength. In addition, the surface of the aluminum plate may be subjected to usual chromate treatment, chemical conversion treatment such as zirconium treatment or titanate treatment, or physical surface treatment such as electrolytic etching. Board thickness is 0.2 to 0.7 m
m, preferably 0.3 to 0.6 mm can be suitably used.
【０００６】上記アルミニウム板の少なくとも片面には
特定の熱変性被膜を介してポリアミド樹脂層またはポリ
アミド樹脂層とエチレン−ビニルアルコール共重合体樹
脂層を順次被覆する必要がある。熱変性被膜はエポキシ
樹脂、脂肪酸またはヒドロキシ置換フェノールからなる
薄膜を３５０℃以上の温度で熱処理して得るものであ
り、熱処理温度が３５０℃未満ではポリアミド樹脂層と
の接着性の改良がみられない。At least one surface of the aluminum plate must be coated with a polyamide resin layer or a polyamide resin layer and an ethylene-vinyl alcohol copolymer resin layer in that order through a specific heat-modified coating. The heat-modified coating is obtained by heat-treating a thin film made of an epoxy resin, a fatty acid or a hydroxy-substituted phenol at a temperature of 350 ° C. or higher, and if the heat-treatment temperature is lower than 350 ° C., the adhesion with the polyamide resin layer is not improved. .
【０００７】ここで、薄膜に使用するエポキシ樹脂とし
ては、ビスフェノールＡとエピクロルヒドリンからなる
ビスフェノール型エポキシ樹脂で分子量が３３０〜３０
００のものが好適に使用でき、脂肪酸としては、パルミ
チン酸、ステアリン酸、オレイン酸、ヒドロキシ置換フ
ェノールとしてはサリチルアルコール、ヒドロキシメチ
ルクレゾール等が挙げられる。薄膜は通常のロールコー
ターにより塗布すればよい。The epoxy resin used for the thin film is a bisphenol type epoxy resin composed of bisphenol A and epichlorohydrin and has a molecular weight of 330 to 30.
No. 00 is preferably used, and examples of the fatty acid include palmitic acid, stearic acid, oleic acid, and examples of the hydroxy-substituted phenol include salicyl alcohol and hydroxymethylcresol. The thin film may be applied by an ordinary roll coater.
【０００８】本発明で使用するポリアミド樹脂として
は、ナイロン６、ナイロン１１、ナイロン１２、ナイロ
ン６６、ナイロン６１０、ナイロン６１２、ナイロン６
とナイロン６６との共重合体等が好適に使用でき、さら
にポリアミド系エラストマー、耐衝撃性ナイロン等も使
用できる。ポリアミド樹脂層の厚みは、２０〜１５０μ
ｍの範囲、好ましくは３０〜１００μｍのものが好適に
使用できる。The polyamide resin used in the present invention includes nylon 6, nylon 11, nylon 12, nylon 66, nylon 610, nylon 612, nylon 6
A copolymer of nylon and nylon 66 can be preferably used, and a polyamide elastomer, impact-resistant nylon, etc. can also be used. The thickness of the polyamide resin layer is 20 to 150 μm
The range of m, preferably 30 to 100 μm can be suitably used.
【０００９】上記ポリアミド樹脂層にさらにエチレンと
ビニルアルコールとの共重合体（以下「ＥＶＯＨ」とい
う）を積層してもよく、さらに耐蝕性を改良できる。Ｅ
ＶＯＨはエチレン含量が２０〜６０モル％、好ましく
は、３０〜５０モル％のものが好適に使用できる。厚み
は１０〜５０μｍ、好ましくは１０〜３０μｍのものが
使用できる。A copolymer of ethylene and vinyl alcohol (hereinafter referred to as "EVOH") may be laminated on the polyamide resin layer to further improve the corrosion resistance. E
VOH having an ethylene content of 20 to 60 mol%, preferably 30 to 50 mol% can be suitably used. A thickness of 10 to 50 μm, preferably 10 to 30 μm can be used.
【００１０】上記樹脂は熱変性被膜を介してアルミニウ
ム板表面に被覆されるが、被覆方法は通常の溶融ラミネ
ート方法によればよい。得られた積層体は樹脂層がキャ
ップの内面となるように絞り加工する必要がある。絞り
加工はキャップ形状に応じて通常の冷間加工法により行
えばよい。本発明のキャップとしてはエアゾール缶上部
に嵌着させるものであり、噴射用バルブを取付けるため
の最上部のキャップや本体との中間部分の肩部にも使用
できる。The above-mentioned resin is coated on the surface of the aluminum plate through a heat-denatured coating, and the coating method may be a usual melt laminating method. The obtained laminated body needs to be drawn so that the resin layer becomes the inner surface of the cap. The drawing process may be performed by an ordinary cold working method depending on the shape of the cap. The cap of the present invention is to be fitted on the upper part of the aerosol can, and can also be used for the uppermost cap for attaching the injection valve and the shoulder part of the intermediate portion with the main body.
【００１１】以下本発明を実施例により説明する。The present invention will be described below with reference to examples.
【００１２】[0012]
実施例１ 表面をクロメート処理したアルミニウム板（Ａ５０５２
−Ｏ 厚み０．４３ｍｍ）の片面に１，１，１−トリク
ロロエタンで溶解したビスフェノール型エポキシ樹脂
（分子量３８０、エポキシ当量１８０〜２００）をロー
ルコーターにて、塗布乾燥後の厚みが１μｍとなるよう
に塗布した。上記アルミニウム板を４００℃で熱処理し
て変性させた後、ナイロン６６からなるフイルム（厚み
２０μｍ）を溶融ラミネートした。Example 1 An aluminum plate whose surface has been chromated (A5052
Bisphenol type epoxy resin (molecular weight 380, epoxy equivalent 180 to 200) dissolved in 1,1,1-trichloroethane on one side of (-O thickness 0.43 mm) with a roll coater so that the thickness after drying is 1 μm. Was applied to. After the aluminum plate was heat-treated at 400 ° C. to be modified, a film made of nylon 66 (thickness 20 μm) was melt-laminated.
【００１３】得られた積層体を用いて樹脂が内面となる
ように最終製品形状のキャップを絞り成形した。ついで
このキャップにバルブを取りつけた後、エアゾール缶本
体（４０ｍｍ径×９６ｍｍ高、インパクト成形法により
成形後、内面にポリアミドイミド塗料をスプレーコーテ
ィングしたもの）の上部に嵌着させた。このエアゾール
缶に各種内容物を充填した後、倒立状態で雰囲気温度４
５℃で３カ月間保存し、キャツプの内面の状態を観察し
た。その結果、噴射剤がＬＰＧのヘアートリートメント
を内容物とするものでは全く異常が見られず、噴射剤が
ＤＭＥのＰＨ２の酸性液を内容物とするものでは内面の
一部に僅かに膨れが見られたが実用上問題が無かった。Using the obtained laminate, a cap having a final product shape was formed by drawing so that the resin would be the inner surface. Then, a valve was attached to this cap and then fitted on the upper part of the aerosol can body (40 mm diameter × 96 mm height, which was formed by impact molding and then spray-coated with polyamideimide paint). After filling the aerosol can with various contents, the atmosphere temperature is 4
It was stored at 5 ° C for 3 months and the state of the inner surface of the cap was observed. As a result, no abnormality was found in the case where the propellant contained LPG hair treatment as the content, and a slight swelling was observed in a part of the inner surface in the case where the propellant contained the acidic liquid of PH2 of DME. However, there was no problem in practical use.
【００１４】実施例２ アルミニウム板表面に被覆する樹脂層がナイロン６フイ
ルム（厚み２０μｍ）を熱融着させた後、さらにその上
にエチレン含量が３２モル％のＥＶＯＨ（厚み１０μ
ｍ）を溶融ラミネートした以外は実施例１と同一内容で
エアゾール缶を構成した後実施例１と同様に保存テスト
を行った。その結果、噴射剤がＬＰＧのヘアートリート
メントを内容物とするもの、及び噴射剤がＤＭＥのＰＨ
２の酸性液を内容物とするもの共に全く異常が見られな
かった。Example 2 A nylon 6 film (thickness 20 μm) was heat-fused as a resin layer for coating the surface of an aluminum plate, and EVOH having an ethylene content of 32 mol% (thickness 10 μm) was further formed thereon.
An aerosol can was constructed with the same contents as in Example 1 except that m) was melt-laminated, and then a storage test was conducted in the same manner as in Example 1. As a result, the propellant contains LPG hair treatment, and the propellant contains DME PH.
No abnormality was found in any of the contents containing the acidic liquid of 2.
【００１５】実施例３ 熱変性被膜をオレイン酸から形成した以外は実施例１と
同一内容でエアゾール缶を構成した後実施例１と同様に
保存テストを行った。その結果実施例２と同様に異常が
見られなかった。Example 3 An aerosol can was constructed in the same manner as in Example 1 except that the heat-modified coating was formed from oleic acid, and then a storage test was conducted in the same manner as in Example 1. As a result, no abnormality was found as in Example 2.
【００１６】比較例１ アルミニウム板表面に被覆する樹脂層がポリプロピレン
フイルム（厚み２０μｍ）である以外は実施例１と同一
内容でエアゾール缶を構成した後実施例１と同様に保存
テストを行った。その結果、噴射剤がＬＰＧのヘアート
リートメントを内容物とするもの及び噴射剤がＤＭＥの
ＰＨ２の酸性液を内容物とするもの共に内面のほぼ全部
に膨れが見られ樹脂が剥離していた。Comparative Example 1 An aerosol can was constructed in the same manner as in Example 1 except that the resin layer coating the surface of the aluminum plate was polypropylene film (thickness 20 μm), and then a storage test was conducted in the same manner as in Example 1. As a result, both the propellant containing LPG hair treatment as the content and the propellant containing DME PH2 acidic liquid as the content were swollen on almost the entire inner surface and the resin was peeled off.
【００１７】比較例２ 実施例１と同一のクロメート処理アルミニウム板を用い
て実施例１と同様にキャップを絞り成形した後、エポキ
シフェノール系塗料にてスプレーコーティングし内面の
被膜厚みが４μｍのものを得た。得られたキャップを用
いて実施例１と同様に保存テストを行った。その結果、
噴射剤がＬＰＧのヘアートリートメントを内容物とする
もの及び噴射剤がＤＭＥのＰＨ２の酸性液を内容物とす
るもの共に内面のほぼ全部に膨れが見られ樹脂が剥離し
ていた。COMPARATIVE EXAMPLE 2 The same chromate-treated aluminum plate as in Example 1 was used to draw a cap in the same manner as in Example 1 and then spray coated with an epoxyphenol paint to obtain an inner surface having a thickness of 4 μm. Obtained. Using the obtained cap, a storage test was conducted in the same manner as in Example 1. as a result,
Both the propellant containing LPG hair treatment as the content and the propellant containing DME PH2 acidic liquid as content contained swelling on almost the entire inner surface and the resin was peeled off.
【００１８】[0018]
【発明の効果】上述したように本発明のキャップによれ
ば耐蝕性に優れており各種噴射剤を使用したエアゾール
缶に好適に使用できる。As described above, the cap of the present invention has excellent corrosion resistance and can be suitably used for aerosol cans using various propellants.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ３２Ｂ 27/38 7016−4Ｆ 27/42 １０１ 7016−4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B32B 27/38 7016-4F 27/42 101 7016-4F
Claims (2)
ポキシ樹脂、脂肪酸またはヒドロキシ置換フェノールか
らなる薄膜を３５０℃以上の温度で熱処理した熱変性被
膜を介してポリアミド樹脂層を被覆した積層体を、樹脂
層が内面となるように絞り加工してなるエアゾール缶用
キャップ。1. A resin layer comprising a laminate in which at least one surface of an aluminum plate is coated with a polyamide resin layer through a heat-modified coating obtained by heat-treating a thin film made of epoxy resin, fatty acid or hydroxy-substituted phenol at a temperature of 350 ° C. or higher. A cap for aerosol cans that is formed by drawing so that the inside becomes.
ポキシ樹脂、脂肪酸またはヒドロキシ置換フェノールか
らなる薄膜を３５０℃以上の温度で熱処理した熱変性被
膜を介してポリアミド樹脂層とエチレン−ビニルアルコ
ール共重合体樹脂層を順次被覆してなる積層体を、エチ
レン−ビニルアルコール共重合体樹脂層が最内面となる
ように絞り加工してなるエアゾール缶用キャップ。2. A polyamide resin layer and an ethylene-vinyl alcohol copolymer resin via a heat-modified coating obtained by heat-treating a thin film of epoxy resin, fatty acid or hydroxy-substituted phenol at a temperature of 350 ° C. or higher on at least one surface of an aluminum plate. A cap for an aerosol can obtained by subjecting a laminate formed by sequentially coating layers to a drawing process so that the ethylene-vinyl alcohol copolymer resin layer is the innermost surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4101416A JPH05305980A (en) | 1992-04-21 | 1992-04-21 | Cap for aerosol can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4101416A JPH05305980A (en) | 1992-04-21 | 1992-04-21 | Cap for aerosol can |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05305980A true JPH05305980A (en) | 1993-11-19 |
Family
ID=14300106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4101416A Pending JPH05305980A (en) | 1992-04-21 | 1992-04-21 | Cap for aerosol can |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05305980A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07330050A (en) * | 1994-06-13 | 1995-12-19 | Mitsubishi Plastics Ind Ltd | Cap for aerosol can |
| JP2005288935A (en) * | 2004-04-01 | 2005-10-20 | Mitsubishi Plastics Ind Ltd | Composite film-laminated aluminum sheet and aerosol can cap |
-
1992
- 1992-04-21 JP JP4101416A patent/JPH05305980A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07330050A (en) * | 1994-06-13 | 1995-12-19 | Mitsubishi Plastics Ind Ltd | Cap for aerosol can |
| JP2005288935A (en) * | 2004-04-01 | 2005-10-20 | Mitsubishi Plastics Ind Ltd | Composite film-laminated aluminum sheet and aerosol can cap |
| JP4610221B2 (en) * | 2004-04-01 | 2011-01-12 | 三菱樹脂株式会社 | Composite film laminated aluminum plate and aerosol can cap |
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