JPH0474844A - Aluminum foil for packaging - Google Patents
Aluminum foil for packagingInfo
- Publication number
- JPH0474844A JPH0474844A JP18513790A JP18513790A JPH0474844A JP H0474844 A JPH0474844 A JP H0474844A JP 18513790 A JP18513790 A JP 18513790A JP 18513790 A JP18513790 A JP 18513790A JP H0474844 A JPH0474844 A JP H0474844A
- Authority
- JP
- Japan
- Prior art keywords
- magnesium
- aluminum foil
- aluminum
- packaging
- synthetic 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.)
- Granted
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 62
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000011888 foil Substances 0.000 title claims abstract description 55
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 22
- 239000011777 magnesium Substances 0.000 claims abstract description 50
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 49
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 20
- 239000000057 synthetic resin Substances 0.000 claims abstract description 20
- 238000000137 annealing Methods 0.000 abstract description 27
- 239000000463 material Substances 0.000 abstract description 17
- 230000001070 adhesive effect Effects 0.000 abstract description 13
- 239000000853 adhesive Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910018084 Al-Fe Inorganic materials 0.000 abstract 1
- 229910018131 Al-Mn Inorganic materials 0.000 abstract 1
- 229910018192 Al—Fe Inorganic materials 0.000 abstract 1
- 229910018461 Al—Mn Inorganic materials 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002994 raw material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010309 melting process Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241001062872 Cleyera japonica Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
Ｆ産業上の利用分野Ｊ
本発明は、菓子、酪農製品、嗜好品、冷凍品、既調理食
品（レトルト食品）、洗剤、化粧品、医薬品、写真用品
、その他の包装用材料として、特に液体を充填する耐水
密性を要する包装用材料として有用な包装用アルミニウ
ム箔に関する。[Detailed Description of the Invention] F Industrial Application Field J The present invention is applicable to confectionery, dairy products, luxury goods, frozen goods, ready-to-cooked foods (retort foods), detergents, cosmetics, pharmaceuticals, photographic supplies, and other packaging. The present invention relates to aluminum foil for packaging, which is useful as a material, particularly as a packaging material that is filled with liquid and requires watertightness.
［従来の技術］
合成樹脂とアルミニウム箔の積層品は、原料の安価なこ
と、軽量であること、自動包装機で包装することが容易
で生産性が高いこと、耐光透過性が良いこと、包装製品
が美麗であること等優れた性質を有するところから多方
面の包装材として広く用いられている。また、用途の変
更に際してもアルミニウム箔の厚みを変えることや、合
成樹脂層（フィルム）の材質を変えることで適用分野を
広げている。[Conventional technology] Laminated products of synthetic resin and aluminum foil are inexpensive raw materials, lightweight, easy to package with automatic packaging machines and have high productivity, have good light resistance, and are easy to package. It is widely used as a packaging material in many fields because it has excellent properties such as beautiful products. Furthermore, when changing applications, the field of application is being expanded by changing the thickness of the aluminum foil and the material of the synthetic resin layer (film).
しかし、特に被包装物が液体であるときは、アルミニウ
ム箔と合成樹脂フィルム間の接着強度が問題となり、接
着強度の高い積層品が求められでいた。However, especially when the object to be packaged is a liquid, the adhesive strength between the aluminum foil and the synthetic resin film becomes a problem, and a laminate product with high adhesive strength has not been sought.
一方、アルミ材料中のマグネシウムは、水の存在下にお
いて合成樹脂との接着性を低下させることはＮ、 Ｃ，
Ｄａｖｉｅｓ、Ｊ、 Ａ、 Ｔｒｅｖｅｒｔｏｎ ：軽
金属学会第６２回大会講演概要１６１．、豊瀬、福井、
畑中、軽金属学会第６７回大会講演概要１７．。On the other hand, magnesium in aluminum materials decreases adhesion with synthetic resin in the presence of water due to N, C,
Davies, J. A., Treverton: Summary of the 62nd Conference of the Light Metals Society 161. , Toyose, Fukui,
Hatanaka, Summary of the 67th Conference of the Light Metals Society 17. .
Ｋ、 Ｗｅｆｅｒｓ ：Ａｌｕｍｉｎｉｕｍ ５７．
１９８１．７２２などに報告されている。K. Wefers: Aluminum 57.
It has been reported in 1981.722, etc.
また、マグネシウムを含有したアルミニウム材料を高温
度に加熱した場合には、アルミニウム表面層への著しい
マグネシウムの拡散が認められ、接着性を低下させるこ
とが認められている（内山、礒山、竹中、温合、軽金属
学会第６８回春期大会講演概要２２９）。Furthermore, when an aluminum material containing magnesium is heated to a high temperature, significant diffusion of magnesium into the aluminum surface layer is observed, reducing adhesive properties (Uchiyama, Isoyama, Takenaka, Atsushi, Abstract of the 68th Spring Conference of the Japan Society of Light Metals, 229).
以上のようなマグネシウムの挙動を考えて合成樹脂とア
ルミニウム箔の接着性の良い積層品を得るためには高温
度での加熱によっても表面層へのマグネシウムの拡散の
少ないアルミニウム材料の開発が望まれていた６
従来アルミニウム箔の原料として使用されるアルミニウ
ム材中のマグネシウム含有量は、−Ｍには１１００ｐｐ
前後のものが多（、また特に塩素等による溶湯処理を行
なってマグネシウムを意識して低下させた場合であって
も３０ｐｐｍ前後まででしかなかった。したがって、ア
ルミニウム箔表面のマグネシウムの濃度を低下させるた
めには、焼鈍後、マグネシウムが濃縮された表面層をエ
ツチング−洗浄してマグネシウムの表面濃度を低下させ
る手段以外に方法はなかったが、高価になり一般品に適
用は出来なかった。Considering the behavior of magnesium as described above, in order to obtain a laminated product with good adhesion between synthetic resin and aluminum foil, it is desirable to develop an aluminum material that exhibits less diffusion of magnesium into the surface layer even when heated at high temperatures. 6 The magnesium content in the aluminum material conventionally used as a raw material for aluminum foil was 1100pp for -M.
(In addition, even when the magnesium content was consciously lowered by processing the molten metal with chlorine, etc., it was only around 30 ppm. Therefore, the concentration of magnesium on the surface of the aluminum foil was reduced. To achieve this, there was no other method than to reduce the surface concentration of magnesium by etching and cleaning the magnesium-concentrated surface layer after annealing, but this method was expensive and could not be applied to general products.
［発明が解決しようとする課題］
アルミニウム箔の焼鈍工程において、焼鈍温度を高くし
てもマグネシウムの表面への拡散による濃縮が極めて少
なく、合成樹脂との接着性に優れた合成樹脂を積層した
包装用アルミニウム箔およびその製造法の開発を目的と
する。[Problems to be Solved by the Invention] A packaging layered with synthetic resin that has extremely low concentration due to diffusion of magnesium to the surface even when the annealing temperature is increased in the annealing process of aluminum foil, and has excellent adhesiveness with synthetic resin. The purpose of this project is to develop aluminum foil and its manufacturing method.
［課題を解決するための手段］
本発明は、合成樹脂と積層した包装用アルミニウム箔に
おいて、マグネシウム含有量がｌ Ｏｐｐｍ以下のアル
ミニウム箔であることを特徴とする包装用アルミニウム
箔に関する。[Means for Solving the Problems] The present invention relates to an aluminum foil for packaging laminated with a synthetic resin, characterized in that the aluminum foil has a magnesium content of 1 Oppm or less.
前述したようにアルミニウム箔表面のマグネシウムの存
在が、水の存在下において合成樹脂との接着性を阻害す
ることは知られていたが、包装用アルミニウム箔の場合
にはその殆どが焼鈍を必要とし、その焼鈍により箔中の
マグネシウムが箔表面への拡散により濃縮が避けられず
、したがって箔原料とするアルミニウム箔中のマグネシ
ウムを減少させても効果があまりないと考えられていた
ため、材料的にはさほど検討が行なわれておらず、それ
よりも焼鈍温度を下げることによりマグネシウムの拡散
を防ぐ方向が採用されていた。As mentioned above, it is known that the presence of magnesium on the surface of aluminum foil inhibits adhesion with synthetic resins in the presence of water, but most aluminum foils for packaging require annealing. Due to the annealing, the magnesium in the foil inevitably diffuses to the foil surface and becomes concentrated, and therefore it was thought that reducing the magnesium in the aluminum foil used as the foil raw material would not have much effect. Not much research has been done on this, and the approach taken was to prevent magnesium diffusion by lowering the annealing temperature.
この結果、焼鈍効果を高めるために必然的に長時間の焼
鈍を必要としていた。As a result, long-time annealing was inevitably required to enhance the annealing effect.
本発明においてはアルミニウム材中のマグネシウムの焼
鈍工程中における挙動を観察し、マグネシウム濃度がア
ルミニウム箔の拡散に大きな影響があって、ある一定濃
度以下であるときは熱処理温度に関係なくマグネシウム
拡散が起こりにくいことを見出した。In the present invention, we observed the behavior of magnesium in aluminum materials during the annealing process, and found that the magnesium concentration has a large effect on the diffusion of aluminum foil, and when the concentration is below a certain level, magnesium diffusion occurs regardless of the heat treatment temperature. I found it difficult.
また、通常の包装用アルミニウム箔においては、マグネ
シウム含有量と合成樹脂のヒートシル強度を見た場合、
アルミニウム箔中のマグネシウム含有量と明確な差がな
く、学術的な文献上の接着強度とは異なる挙動を示すた
め、マグネシウムの量のコントロールはあまり厳密なも
のとはなっていないようである。In addition, when looking at the magnesium content and heat seal strength of synthetic resin in ordinary aluminum foil for packaging,
There is no clear difference from the magnesium content in aluminum foil, and the adhesive strength behaves differently from the adhesive strength described in academic literature, so it seems that the amount of magnesium is not controlled very strictly.
しかし、これらの包装用アルミニウム箔であっても水中
に長期間浸漬テスト（液体を包装する包装容器に使用し
た場合に対応する。）と、乾燥状態ではその差が明確で
なかった接着強度が、マグネシウムの表面濃度に大きく
影響し、マグネシウムの濃度が低いほど接着強度が大と
なることが明らかになった。However, even with these aluminum foils for packaging, there was no clear difference in adhesive strength between long-term immersion tests in water (corresponding to when used in packaging containers for packaging liquids) and dry conditions. It was revealed that the surface concentration of magnesium has a large effect, and the lower the concentration of magnesium, the higher the adhesive strength.
すなわち、アルミニウム材中のマグネシウム濃度が１ｏ
ｐｐｍ以下であるときは、熱処理温度の高低に関係なく
、マグネシウムのアルミニウム箔表面への拡散濃縮が極
めで少なく、したがって合成樹脂との接着強度を低下さ
せないことがわがった。In other words, the magnesium concentration in the aluminum material is 1o
It has been found that when it is below ppm, the diffusion and concentration of magnesium on the aluminum foil surface is extremely small, regardless of the heat treatment temperature, and therefore the adhesive strength with the synthetic resin is not reduced.
アルミニウム箔は一般に溶解鋳造−熱間圧延一冷間圧延
轡中間焼鈍叫箔圧延一セバレーター−最終焼鈍榊スリッ
ターーアルミニウム箔の順序で製造されるが、溶解・鋳
造の工程にあるアルミニウム材のマグネシウム含有量を
ｌｏｐｐｍ以下にすることが必要である。Aluminum foil is generally produced in the following order: melting and casting - hot rolling - cold rolling - intermediate annealing - foil rolling - separator - final annealing Sakaki slitter - aluminum foil, but the magnesium content of the aluminum material during the melting and casting process It is necessary to keep the amount below loppm.
アルミニウム地金は、ロット毎にマグネシウム含有量の
バラツキが避けられないので、マグネシウム含有量がｌ
Ｏｐｐｍ以下のロットを本発明の対象となる液体貯蔵用
容器に使用する包装用アルミニウム箔原料として使用す
ることが好ましい。In aluminum ingots, it is inevitable that the magnesium content will vary from lot to lot.
It is preferable to use a lot of 0ppm or less as a raw material for packaging aluminum foil used in a liquid storage container that is the object of the present invention.
このようなアルミニウム材質としてはｌＮ３０、１１０
０系の純アルミ系、３００３系のＡＰ−Ｍｎ系、ＡＰ−
Ｆｅ系等が好ましい。もちろんマグネシウムの点からは
１０８５系、１０８０系等があるがコストアップとなる
ばかりでなく、強度も不充分となるので好ましくない。Examples of such aluminum materials include lN30 and 110
0 series pure aluminum series, 3003 series AP-Mn series, AP-
Fe-based materials are preferred. Of course, from the viewpoint of magnesium, there are 1085 series, 1080 series, etc., but these are not preferred because they not only increase cost but also have insufficient strength.
また、従来の最終焼鈍工程はマグネシウムのアルミニウ
ム箔表面への拡散を避けるため、なるべく低温で長時間
する方向が定着していた。Furthermore, in the conventional final annealing process, in order to avoid diffusion of magnesium to the surface of the aluminum foil, it has been established that the final annealing process is performed at as low a temperature as possible for a long time.
例えば２５０〜３１０℃で行なわれていたが、本発明の
アルミニウム箔の最終焼鈍工程においては、マグネシウ
ムの拡散を考慮する必要がないので、従来の如く２５０
℃のごとき低温でも可能であるが、４００℃のごとき高
温、熱処理時間、熱処理効果を考慮すると、３００〜４
００℃のごとき高温で熱処理することが出来、且つその
結果液体の存在下においても合成樹脂との接着強度に優
れた包装用アルミニウム箔を得ることが出来る。For example, in the final annealing process of aluminum foil of the present invention, it is not necessary to consider the diffusion of magnesium, so the temperature is 250 to 310°C.
Although it is possible to use a low temperature such as 400°C, considering the high temperature, heat treatment time, and heat treatment effect, the temperature is 300 to 400°C.
It is possible to obtain an aluminum foil for packaging that can be heat-treated at a high temperature such as 00° C. and has excellent adhesive strength with a synthetic resin even in the presence of a liquid.
対象となる合成樹脂としては、塩化ビニル、ポリエチレ
ン、ポリプロピレン、エチレン−酢酸ビニル共重合体、
ポリアクリル酸エステル、スチレン−ブタジェンラバー
、ニトリルラバー、クロロブレンゴム、アイオノマー等
、周知の合成樹脂である。Targeted synthetic resins include vinyl chloride, polyethylene, polypropylene, ethylene-vinyl acetate copolymer,
These are well-known synthetic resins such as polyacrylic acid ester, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, and ionomer.
これらの合成樹脂は、エマルジョン、有機溶剤に溶解し
た滴液などを塗布する方式、−旦フィルムにしてドライ
ラミネーションとしで接着する方法、または押出コーテ
ィングなど各種のケースがあるが、いずれのケースにも
適用可能である。These synthetic resins can be applied in various ways, such as by applying emulsions, droplets dissolved in organic solvents, by dry laminating a film and adhering it, or by extrusion coating. Applicable.
更にアルミニウム箔は焼鈍状態そのままのアルミニウム
箔であっても良（、またコロナ放電処理、シランカップ
リング剤、チタニウムカップリング剤等のカップリング
剤で処理済のものであっても効果はある。Further, the aluminum foil may be annealed aluminum foil (or it may be effective even if it has been treated with a corona discharge treatment, a silane coupling agent, a titanium coupling agent, etc.).
このようにマグネシウム含有量１０ｐｐｍ以下であるア
ルミニウム箔を包装用アルミニウム箔原料に使用する場
合には、最終焼鈍温度を高くすることができ、したがっ
て焼鈍時間の短縮による生産性の向上が計れることにな
る。In this way, when aluminum foil with a magnesium content of 10 ppm or less is used as a raw material for aluminum foil for packaging, the final annealing temperature can be increased, and therefore productivity can be improved by shortening the annealing time. .
［実施例］
（参考例）
試験材料としてｌＮ３０を用い、溶解・鋳造工程におい
て調整し、マグネシウム含有量６ｐｐｍと２６ｐｐｍを
アルミニウム箔を準備した。[Example] (Reference example) Using IN30 as a test material, aluminum foils with magnesium contents of 6 ppm and 26 ppm were prepared by adjusting the melting and casting process.
アルミニウム箔表面のマグネシウム含有量の測定には蛍
光Ｘ−線分析装置を用い、分析条件としては３０ｍｍφ
面積のサンプル４０ＫＶ、７０ｍＡ、１００秒における
マグネシウムおよびアルミニウムをカウントし、評価は
Ｍ ｇ ／ ＡＰとして求めた。なお、焼鈍のための保
持時間は１３時間とした。この結果を第１［］に示す。A fluorescent X-ray analyzer was used to measure the magnesium content on the surface of the aluminum foil, and the analysis conditions were as follows:
The area samples were counted for magnesium and aluminum at 40 KV, 70 mA, 100 seconds, and the evaluation was determined as M g / AP. Note that the holding time for annealing was 13 hours. The results are shown in 1st [].
第１図かられかるようにサンプルとしたアルミニウム材
のマグネシウム含有量は太き（差があるが、理由は不明
であるがこれらから作られた箔表面のマグネシウム濃度
に差が認められず、未焼鈍の場合にはその差は顕著でな
い。しかし、焼鈍することにより温度の上昇と共に顕著
にマグネシウムは箔表面に拡散量は増大し、表面への濃
縮が行なわれていることが明らかである。As can be seen from Figure 1, the magnesium content of the aluminum materials used as samples is large (there is a difference, but the reason is unknown, but no difference was observed in the magnesium concentration on the surface of foils made from these materials. In the case of annealing, the difference is not significant.However, as the temperature increases, the amount of magnesium diffused into the foil surface increases significantly due to annealing, and it is clear that magnesium is concentrated on the surface.
（実施例）
アルミニウム材としてｌＮ３０を用い、溶解・鋳造工程
でマグネシウム含有量を調節して各種のアルミニウム箔
を製造し、耐水性テストを行なった。(Example) Using IN30 as the aluminum material, various aluminum foils were manufactured by adjusting the magnesium content in the melting and casting process, and a water resistance test was conducted.
耐水性テスト（剥離強度）は、アルミニウム箔に塩化ビ
ニル塗料を５ｇ／ｍ２塗布し、１５０”ＣＸ２０ｓｅｃ
乾燥を行なった。Water resistance test (peel strength) was performed by applying 5g/m2 of vinyl chloride paint to aluminum foil and applying it for 150”CX20sec.
Drying was performed.
ついで２００℃Ｘ１ｓｅｃの条件でヒートシールし、６
０℃の温水に３日間浸漬した後、ヒートシール部の剥離
強度をテストした。結果を第１表に示す。Then heat sealed at 200°C for 1 sec.
After being immersed in warm water at 0° C. for 3 days, the peel strength of the heat-sealed portion was tested. The results are shown in Table 1.
（以下余白）
第１表からもわかるように、マグネシウム含有量が異な
るアルミニウム箔と合成樹脂の接着強度は、初期ピーリ
ング強度を見るかぎり差はないとしてよい。したがって
、液体と接しない包装用アルミニウム箔としては充分で
あるが、耐水性テストをするとマグネシウム含有量によ
る差が現われ、温和な条件の最終焼鈍工程によってもそ
の影響を克服出来ないことを明らかにしている。(The following is a blank space) As can be seen from Table 1, it can be said that there is no difference in the adhesive strength between aluminum foils and synthetic resins having different magnesium contents, as long as the initial peeling strength is looked at. Therefore, it is sufficient as an aluminum foil for packaging that does not come into contact with liquids, but a water resistance test reveals that there are differences depending on the magnesium content, and this effect cannot be overcome even by the final annealing process under mild conditions. There is.
［発明の効果コ
包装用アルミニウム箔に使用するアルミニウム箔のマグ
ネシウム含有量をｌｏｐｐｍ以下にすることにより最終
焼鈍工程においても拡散によるアルミニウム箔表面への
マグネシウムの濃縮がほとんど起こらない。[Effects of the Invention] By reducing the magnesium content of the aluminum foil used for packaging aluminum foil to lop per million or less, concentration of magnesium on the surface of the aluminum foil due to diffusion hardly occurs even in the final annealing step.
したがって本発明によるときは、
■ 焼鈍温度を高くしても、塗膜の接着強度の高い包装
用アルミニウム箔を製造可能となった。Therefore, according to the present invention, (1) Even if the annealing temperature is increased, it is possible to produce an aluminum foil for packaging with high adhesive strength of the coating film.
■ 焼鈍温度が高くできるので、焼鈍時間を短縮でき、
生産性の高い製造が可能となった。■ The annealing temperature can be increased, so the annealing time can be shortened.
Highly productive manufacturing is now possible.
■ 表面にマグネシウム含有量が少ないので、箔の表面
洗浄工程を必要としない。■ Since the surface has low magnesium content, no surface cleaning process is required for the foil.
■ マグネシウム表面濃度が低いためアルミニウム箔と
塗膜の接着強度が高く、液体容器に適する包装用アルミ
ニウム箔が得られる。■ Due to the low surface concentration of magnesium, the adhesive strength between the aluminum foil and the coating film is high, making it possible to obtain aluminum foil for packaging suitable for liquid containers.
など多くの効果がある。There are many effects such as
第１図はアルミニウム箔の焼鈍温度と表面マグネシウム
量の関係を示す図である。FIG. 1 is a diagram showing the relationship between the annealing temperature of aluminum foil and the amount of surface magnesium.
Claims (1)
て、マグネシウム含有量が１０ｐｐｍ以下のアルミニウ
ム箔であることを特徴とする包装用アルミニウム箔。(1) An aluminum foil for packaging laminated with a synthetic resin, characterized in that the aluminum foil has a magnesium content of 10 ppm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2185137A JPH0623419B2 (en) | 1990-07-12 | 1990-07-12 | Aluminum foil for packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2185137A JPH0623419B2 (en) | 1990-07-12 | 1990-07-12 | Aluminum foil for packaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0474844A true JPH0474844A (en) | 1992-03-10 |
| JPH0623419B2 JPH0623419B2 (en) | 1994-03-30 |
Family
ID=16165523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2185137A Expired - Lifetime JPH0623419B2 (en) | 1990-07-12 | 1990-07-12 | Aluminum foil for packaging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623419B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741082A (en) * | 2013-12-26 | 2014-04-23 | 中铝西南铝冷连轧板带有限公司 | Production method of 3003 aluminium alloy medium gauge foil |
| JP2014097626A (en) * | 2012-11-15 | 2014-05-29 | Mitsui Chemicals Inc | Laminate and method for producing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751247A (en) * | 1980-08-14 | 1982-03-26 | Kobe Steel Ltd | Manufacture of foil material with superior suitability to rolling into foil |
| JPS61119658A (en) * | 1984-11-16 | 1986-06-06 | Sukai Alum Kk | Manufacture of material for aluminum foil |
| JPS6318041A (en) * | 1986-07-11 | 1988-01-25 | Furukawa Alum Co Ltd | Manufacture of aluminum foil |
-
1990
- 1990-07-12 JP JP2185137A patent/JPH0623419B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751247A (en) * | 1980-08-14 | 1982-03-26 | Kobe Steel Ltd | Manufacture of foil material with superior suitability to rolling into foil |
| JPS61119658A (en) * | 1984-11-16 | 1986-06-06 | Sukai Alum Kk | Manufacture of material for aluminum foil |
| JPS6318041A (en) * | 1986-07-11 | 1988-01-25 | Furukawa Alum Co Ltd | Manufacture of aluminum foil |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014097626A (en) * | 2012-11-15 | 2014-05-29 | Mitsui Chemicals Inc | Laminate and method for producing the same |
| CN103741082A (en) * | 2013-12-26 | 2014-04-23 | 中铝西南铝冷连轧板带有限公司 | Production method of 3003 aluminium alloy medium gauge foil |
| CN103741082B (en) * | 2013-12-26 | 2016-08-17 | 中铝西南铝冷连轧板带有限公司 | The production method of 3003 aluminium alloy single zero paper tinsels |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0623419B2 (en) | 1994-03-30 |
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