JPS5820779B2 - Netsuyuuchyakuhiyoumenhogofirumuno Hakurihouhou - Google Patents
Netsuyuuchyakuhiyoumenhogofirumuno HakurihouhouInfo
- Publication number
- JPS5820779B2 JPS5820779B2 JP49140483A JP14048374A JPS5820779B2 JP S5820779 B2 JPS5820779 B2 JP S5820779B2 JP 49140483 A JP49140483 A JP 49140483A JP 14048374 A JP14048374 A JP 14048374A JP S5820779 B2 JPS5820779 B2 JP S5820779B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- water
- adhesive
- metal plate
- peeling
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 229920000098 polyolefin Polymers 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 description 23
- 239000000853 adhesive Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 7
- -1 polyethylene Polymers 0.000 description 7
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229920007636 Polyamide Nylon 6 Film Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
- Combined Means For Separation Of Solids (AREA)
Description
【発明の詳細な説明】
本発明は金属板に熱融着した表面保護フィルムの剥離方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for peeling off a surface protection film heat-sealed to a metal plate.
現在金属板の包装、運搬などの取扱いや、切断、曲げ、
打抜きロールフォーミング、絞りなどの加工時の傷発生
防止のために表面保護材が用いられている。Currently, we handle packaging, transportation, etc. of metal plates, cutting, bending,
Surface protection materials are used to prevent scratches during processing such as punching roll forming and drawing.
それらの代表的なものにストリッパブルペイントと称せ
られ、塩化ビニルゾルを金属板上に塗付焼付けしたもの
とプラスチックスフィルムや紙に粘着剤を塗付した粘着
フィルム、粘着紙と称せられるものなどがあり、表面保
護の必要な一定期間貼付けられたのち剥離されている。Typical examples include strippable paint, which is made by applying vinyl chloride sol onto a metal plate and baking it, and adhesive film, which is made by applying adhesive to plastic film or paper, and what is called adhesive paper. Yes, it is applied for a certain period of time to protect the surface and then removed.
これらの表面保護材は各種の金属板に種々の目的に応じ
た接着力、フィルムの厚み、剛性のものが使用されてい
るが次の欠点を持つ。These surface protection materials are used on various metal plates with adhesive strength, film thickness, and rigidity depending on various purposes, but they have the following drawbacks.
ストリッパブルペイントは焼付中、成分中の可塑剤が揮
散し作業者の健康を害すること、焼付の温度管理を誤る
と金属に対する接着力が高すぎて剥離が困難になったり
、低すぎて加工に耐えられず剥離するなどの欠点を、粘
着フィルムは容易に貼付けられる利点を持つ一方で接着
力が経時的に変化し高くなりやすいこと、剥離の際粘着
剤が被着体表面に転着し易いこと、粘着剤のクリープ特
性が極めて低いために加工変形させたときのフィルムの
残留応力によって自然に剥離し易いこと、加工時に使用
される潤活油によって粘着剤が変質し転着し易くなるこ
と、高価であることなどの欠点を有する。During baking, the plasticizer in strippable paint evaporates and harms the health of workers.If the baking temperature is incorrectly controlled, the adhesive force to the metal may be too high and difficult to remove, or too low and difficult to process. Adhesive films have the advantage of being easy to apply, but the adhesive strength tends to change and increase over time, and the adhesive tends to transfer to the surface of the adherend when peeled off. The creep property of the adhesive is extremely low, so it tends to peel off naturally due to the residual stress in the film when it is deformed during processing, and the lubricating oil used during processing changes the quality of the adhesive and makes it easier to transfer. , it has disadvantages such as being expensive.
本発明は以上の欠点に鑑みなされたものでポリオレフィ
ンが熔融する程度の温度に加熱された金属板上にポリオ
レフィンフィルムを接触させ融着させ次いで加工後、剥
離する際には水中に浸漬あるいは高湿下に放置すること
によって、フィルム金属板界面に水を浸入させ剥離を容
易にする方法である。The present invention was developed in view of the above drawbacks, and involves contacting and fusing a polyolefin film onto a metal plate heated to a temperature that melts the polyolefin. This method allows water to enter the interface between the film and the metal plate by leaving the film under the metal plate to facilitate peeling.
その目的とするところは、安価で無公害で特性の良い表
面保護材を提供するところにある。The purpose is to provide a surface protection material that is inexpensive, non-polluting, and has good properties.
ポリエチレン、ポリプロピレン、およびこれら・の共重
合体などのポリオレフィン類は一定の融点を持ち、融点
以上に加熱すれば金属に良く接着することは知られてい
る。It is known that polyolefins such as polyethylene, polypropylene, and copolymers thereof have a certain melting point and will adhere well to metals if heated above the melting point.
ポリオレフィンが金属板に良く接着する事実は熔融時の
粘度が他のポリマーにくらべて著るしく低いこと、界面
化学的にはポリオレフィンは表面張力が小さく表面張力
の大きい金属板に極めてぬれ易いことなどのために金属
板表面の微細な凹凸にまで短時間に良く流動し易いため
であると説明されている。The fact that polyolefins adhere well to metal plates is that their viscosity when melted is significantly lower than that of other polymers, and in terms of surface chemistry, polyolefins have a low surface tension and are extremely easy to wet with metal plates, which have a high surface tension. It is explained that this is because it is easy to flow even into minute irregularities on the surface of a metal plate in a short period of time.
この様な熱融着性を利用して、ポリオレフィンフィルム
を金属板上に貼付け、安価で無公害の表面保護材とする
試みは今までにしばしば行われて来たが、表面保護材と
して適した接着力に接着力を管理することが困難である
ため放棄されている。Attempts have often been made to make use of this thermal adhesive property to attach polyolefin films to metal plates as inexpensive and non-polluting surface protection materials, but none of them are suitable as surface protection materials. It has been abandoned because it is difficult to control adhesive strength.
すなわち融点過ぎると貼付時のわずかな温度上昇によっ
て接着力が急激に高くなるため、一般に剥離する際フィ
ルムが破断する程度に接着が高くなり易いところに問題
があった。That is, if the melting point is exceeded, the adhesive force increases rapidly due to a slight increase in temperature during application, and there is a problem in that the adhesive strength tends to increase to the extent that the film breaks when it is generally peeled off.
本発明者らは、この問題について検討した結果。The inventors investigated this problem.
フィルムが破断し剥離不能な程度に強固に貼付けられた
ものでも、水中に浸漬するか若しくは浸漬同様な処置を
施すと、水がフィルムと金属板界面に浸入し接着力を著
しく低下させることを発見した。It has been discovered that even if the film is affixed so firmly that it cannot be removed without breaking, if it is immersed in water or subjected to a similar treatment, water will seep into the interface between the film and the metal plate, significantly reducing the adhesive strength. did.
したがって剥離に際して水がフィルムと金属板間に浸入
させる条件さえ与えれば、金属板の加工時に必要な接着
力以下に出来フィルムの剥離作業が従来の表面保護材と
比較しても極めて容易になり、ポリオレフインクフィル
ムを熱融着によって金属板に貼付けて、表面保護材とす
ることが可能になった。Therefore, as long as conditions are provided to allow water to enter between the film and the metal plate during peeling, the adhesive strength can be reduced to less than that required when processing the metal plate, making the process of peeling the film extremely easy compared to conventional surface protection materials. It has become possible to attach a polyolef ink film to a metal plate by heat fusion and use it as a surface protection material.
この様な水中浸漬などによる接着力の著しい低下はポリ
オレフィン以外のフィルム、例えば塩化ビニル、ポリア
ミドなどを熱融着したもの、あるいはストリッパブルペ
イントを塗付焼付けしたものなどには起らない。Such a significant decrease in adhesive strength due to immersion in water does not occur with films other than polyolefin, such as those made of heat-sealed vinyl chloride, polyamide, etc., or those coated with strippable paint and baked.
このポリオレフィンフィルムに特有な現象を究明すると
、ポリオレフィンフィルムは吸水率が極めて低いこと、
表面張力が低いことなどで他のフィルムと差異があり、
これらの性質が水を安定にフィルムと金属界面に存在さ
せ易い条件を作り、接着界面を破壊するものと思われる
。When we investigated the unique phenomenon of this polyolefin film, we found that polyolefin film has an extremely low water absorption rate.
It differs from other films due to its low surface tension.
It is thought that these properties create conditions that make it easy for water to stably exist at the film-metal interface, destroying the adhesive interface.
各種高分子の表面張力、吸水率を列挙すればポリエチレ
ン３５ ｄｙｎＡＬ、 ０．０１ ％エチレンー酢酸ビ
ニル共重合体（酢酸ビニル１５ ％ ） ３７ ｄｙｎ
／Ｃ７７Ｌ、 ０．０５転 ポリプロピレン３．９ ｄ
ｙｎ／ｃＩｒＬ、 ０．０１ ％、軟質塩化ビニル４
３ （１ｙｎ／ｃｒｒＬ、０．３ ％、ストリッパブル
ペイント４４ ｄ ｙｎ／ｃＩＩｔ、 ０．４ ％、
ポリアミド４７ ｄ ｙｎ／ｍ、 １．２ ％などで
あり、ポリオレフィンに特長がある。The surface tension and water absorption of various polymers are as follows: polyethylene 35 dynAL, 0.01% ethylene-vinyl acetate copolymer (vinyl acetate 15%) 37 dyn
/C77L, 0.05 conversion polypropylene 3.9 d
yn/cIrL, 0.01%, soft vinyl chloride 4
3 (1yn/crrL, 0.3%, strippable paint 44 dyn/cIIt, 0.4%,
Polyamide 47 dyn/m, 1.2%, etc., and has the characteristics of polyolefin.
一方金属板の表面張力は３００ｄｙｎＡ−ｒＩ１以上、
水の表面張力は７３ｄｙｎ／ｍであり、前記接着界面へ
の水の浸入し易さ、すなわち水が安定に存在し易い条件
はフィルムと金属板間の中間の表面張力を有すること、
したがってフィルムと水との表面張力差の大きいことで
あると思われる。On the other hand, the surface tension of the metal plate is 300dynA-rI1 or more,
The surface tension of water is 73 dyn/m, and the condition for ease of water intrusion into the adhesive interface, that is, the condition for water to exist stably, is to have a surface tension intermediate between that of the film and the metal plate;
Therefore, it seems that the difference in surface tension between the film and water is large.
また吸水率の点からは、吸水率の大きいフィルムの場合
、フィルム中に存在する方が安定であり、吸水率の低い
フィルムでは界面に存在す・る方が安定であると推定出
来る。Also, from the point of view of water absorption, it can be assumed that in the case of a film with a high water absorption rate, it is more stable if it exists in the film, and in the case of a film with a low water absorption rate, it is more stable if it exists in the interface.
ポリオレフィンフィルムの融着方法は、予め金属板を貼
付けるポリオレフィンの融点以上に加熱し、上下２本の
ロール間に貼付ける方法がとられる。The method for fusing the polyolefin film is to heat the metal plate in advance to a temperature higher than the melting point of the polyolefin to which it is attached, and then attach it between two upper and lower rolls.
一般にこの一行程だけで充分な接着力が得られるが、不
充分な場合には加熱炉内で更に数分程度加熱を継続する
ことによって良好な接着が得られる。Generally, sufficient adhesion can be obtained with just this one step, but if it is insufficient, good adhesion can be obtained by continuing heating in the heating oven for several more minutes.
剥離の際、浸漬する水温は高い方が短時間に接着力を低
下させることが出来る。At the time of peeling, the higher the temperature of the immersion water, the faster the adhesive strength can be reduced.
水でなくとも水を多量に含む水溶液であれば効果に影響
を与えないし、高湿度の雰囲気に放置することによって
も達成される。Even if it is not water, an aqueous solution containing a large amount of water will not affect the effect, and it can also be achieved by leaving it in a high humidity atmosphere.
以下実施例によって説明する。This will be explained below using examples.
実施例 １
密度０．９３ 、メルトインデックス２．０、融点１１
５℃、厚さ６０ミクロンのポリエチレンフィルムを予め
１２０１１４０℃、１６０℃、１８０℃に加熱された厚
さ１．０朋、１００ｍｔｔｔ平方のアルミニウム板上に
２本のゴムロール間で貼付けそのまま空冷した。Example 1 Density 0.93, melt index 2.0, melting point 11
A polyethylene film having a thickness of 60 microns and a temperature of 5° C. was pasted between two rubber rolls on a 1.0 mm thick, 100 mttt square aluminum plate which had been heated in advance to 120° C., 160° C., and 180° C., and then cooled in the air.
このアルミニウム板の中央を９０度に曲げ加工したとこ
ろ、１２０℃で貼付けたものは取扱中に剥離したが、そ
の他の温度で貼付けたものは、この間において剥離する
ことなく傷保護の目的を果した。When the center of this aluminum plate was bent at 90 degrees, the one pasted at 120°C peeled off during handling, but the one pasted at other temperatures did not peel off during this period and fulfilled its purpose of protecting against scratches. .
その後剥離しようとしたが、１６０℃、１８０℃で貼付
けたものはフィルムが破れて剥離出来なかったので水中
に３時間浸漬したところ、いずれも容易に剥離すること
が出来た。After that, I tried to peel it off, but the films that were pasted at 160°C and 180°C were torn and could not be peeled off, so when I immersed them in water for 3 hours, I was able to peel them off easily.
参考までにこの間の接着力の変化を測定した結果を第１
表に示す。For reference, the results of measuring changes in adhesive force during this time are shown in the first page.
Shown in the table.
接着力は１８０度で３００ｍｍ／分の速度で剥離したと
きの剥離力（、！ｉｉ’／ ２５ｍｒｎ）を表−１に示
す。Table 1 shows the peeling force (,!ii'/25 mrn) when peeling at 180 degrees and a speed of 300 mm/min.
実施例 ２
密度０．９、メルトフローレート５、融点１６５℃のポ
リプロピレンを予め２００℃に加熱したステンレス板に
貼付けた後空冷した。Example 2 Polypropylene having a density of 0.9, a melt flow rate of 5, and a melting point of 165°C was attached to a stainless steel plate preheated to 200°C, and then air-cooled.
このものの接着力は５０ｇ７２５ｍｍであったので、更
に２００℃の恒温槽内で３分間加熱したところ、剥離は
不可能であり切断、打抜きなどの加工時の傷保護の目的
を果した。The adhesive strength of this product was 50 g and 725 mm, so when it was further heated for 3 minutes in a constant temperature bath at 200° C., it was impossible to peel it off, and it served the purpose of protecting scratches during processing such as cutting and punching.
２００ｍｍＸ ３００ｍｍの大きさの中央部に３０φを
打抜き加工を行った前記ポリプロピレンフィルム貼付板
を水中に５時間放置したところ、接着力は１００ｇ７２
５ｍｍにまで低下し、容易に剥離することが出来た。When the above-mentioned polypropylene film-attached board, which had a size of 200 mm x 300 mm and had a 30 φ punched out in the center, was left in water for 5 hours, the adhesive strength was 100 g72
The thickness decreased to 5 mm and could be easily peeled off.
参考例 １
可塑剤４０係を含む塩ビゾルのストリッパブルペイント
をステンレス板上に厚さ５０ミクロン塗付し、２００℃
で５分間焼付けた。Reference example 1 A strippable paint made of vinyl chloride sol containing 40 parts of plasticizer was applied to a thickness of 50 microns on a stainless steel plate and heated at 200°C.
Bake for 5 minutes.
冷却後の接着力は２５０９／２５ｍｍであり、水中に２
４時間浸漬しても２３５９／２５ｖｔｍにしか低下しな
かった。The adhesive strength after cooling is 2509/25mm, and the adhesive strength is 2509/25mm in water.
Even after immersion for 4 hours, the value decreased only to 2359/25vtm.
この場合剥離することは出来たが剥離作業は困難であっ
た。In this case, it was possible to peel off, but the peeling work was difficult.
参考例 ２
厚さ１００ミクロンのポリアミド（ナイロン６）フィル
ムを２５０℃に予め加熱されたステンレス板に貼付けた
。Reference Example 2 A polyamide (nylon 6) film with a thickness of 100 microns was attached to a stainless steel plate preheated to 250°C.
冷却後の接着性は充分で剥離させることは出来なかった
。Adhesion after cooling was sufficient and it was not possible to peel it off.
水中に２４時間浸漬しても同様であった。The same result was observed even when immersed in water for 24 hours.
Claims (1)
ルムを水中に浸漬あるいは高湿下に放置した後剥離する
ことを特徴とする表面保護フィルムの剥離方法。1. A method for peeling a surface protection film, which comprises peeling off a polyolefin surface protection film heat-sealed onto a metal plate after immersing it in water or leaving it under high humidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49140483A JPS5820779B2 (en) | 1974-12-09 | 1974-12-09 | Netsuyuuchyakuhiyoumenhogofirumuno Hakurihouhou |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49140483A JPS5820779B2 (en) | 1974-12-09 | 1974-12-09 | Netsuyuuchyakuhiyoumenhogofirumuno Hakurihouhou |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5167377A JPS5167377A (en) | 1976-06-10 |
| JPS5820779B2 true JPS5820779B2 (en) | 1983-04-25 |
Family
ID=15269643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49140483A Expired JPS5820779B2 (en) | 1974-12-09 | 1974-12-09 | Netsuyuuchyakuhiyoumenhogofirumuno Hakurihouhou |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5820779B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4994756A (en) * | 1972-11-30 | 1974-09-09 |
-
1974
- 1974-12-09 JP JP49140483A patent/JPS5820779B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4994756A (en) * | 1972-11-30 | 1974-09-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5167377A (en) | 1976-06-10 |
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