JPH045039A - Protective film-laminated coated steel sheet and preparation thereof - Google Patents
Protective film-laminated coated steel sheet and preparation thereofInfo
- Publication number
- JPH045039A JPH045039A JP10808390A JP10808390A JPH045039A JP H045039 A JPH045039 A JP H045039A JP 10808390 A JP10808390 A JP 10808390A JP 10808390 A JP10808390 A JP 10808390A JP H045039 A JPH045039 A JP H045039A
- Authority
- JP
- Japan
- Prior art keywords
- protective film
- coil
- film
- coating
- laminated
- 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
- 230000001681 protective effect Effects 0.000 title claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- -1 polyethylene Polymers 0.000 claims description 26
- 239000004698 Polyethylene Substances 0.000 claims description 16
- 229920000573 polyethylene Polymers 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 239000011253 protective coating Substances 0.000 claims description 11
- 229910000576 Laminated steel Inorganic materials 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 229920005672 polyolefin resin Polymers 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 2
- 230000008602 contraction Effects 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 238000002791 soaking Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009993 protective function Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、建材や家電製品などに用いられる塗装鋼板
に関連し、コイル状態のときの変形を防ぎ平坦度の良い
塗装鋼板を製造する技術に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to painted steel sheets used for building materials, home appliances, etc., and relates to a technology for manufacturing painted steel sheets that prevent deformation when in a coiled state and have good flatness. Regarding.
［従来技術］
建材や家電製品等に大量に使用される塗装鋼板は、前処
理を受けた鋼帯に連続的に塗料が塗布され塗膜が形成さ
れた後、この塗膜の上に薄い保護皮膜が張られて製品と
なる。この保護皮Ｍは、塗装鋼板の運搬時等ハンドリン
グの際にてきる疵やプレス時に付く疵等を防ぐために、
最表層に付せちれ、プレス後は引き剥がされるものであ
り、主としてポリプロピレンの数十μｍのフィルムが使
われていた。[Prior art] Painted steel sheets, which are used in large quantities for building materials, home appliances, etc., are coated with paint continuously on a pretreated steel strip to form a coating film, and then a thin protective coating is applied on top of this coating film. A film is applied to the product. This protective skin M is used to prevent scratches that may occur during handling or during pressing of the painted steel plate.
It was attached to the outermost layer and peeled off after pressing, and a polypropylene film of several tens of micrometers was mainly used.
一方、この製造工程を経た塗装鋼帯は巻き取られてコイ
ルとなり、板がはじけないように外周にはバンドが掛け
られてその後取り扱われる。塗装鋼板のように薄い鋼帯
では、バンド掛は以外に何の処置も講じない場合は、静
置しておく間に巻がれなコイルの自重で円形であるべき
形状が扁平状円形に漬れる（以下、コイル漬れと称す〉
ことがある。コイル漬れが起こると、板の平坦度が失わ
れるので、もはや製品とはならなくなる。On the other hand, the coated steel strip that has gone through this manufacturing process is wound up into a coil, and a band is placed around the outer periphery to prevent the board from snapping, which is then handled. For thin steel strips such as painted steel plates, if no treatment is taken other than banding, the weight of the unwound coil will cause the circular shape to become flat and circular while it is left standing. (hereinafter referred to as coil pickling)
Sometimes. When coil soaking occurs, the flatness of the plate is lost and it is no longer usable as a product.
このため、従来、外周のバンド留めと共にこの内径に制
限を加えることによってコイル漬れを防止していた。即
ち５、紙やプラスチックで作られた筒をコイルの内側に
装入しこれらの筒径が縮小しないように、コイリンクの
際がら微妙なコントロールを行っていた（例えば、特開
昭６３２３５０２３号公報〉。For this reason, conventionally, coil dipping has been prevented by banding the outer periphery and limiting the inner diameter. Namely, 5. A tube made of paper or plastic was inserted inside the coil, and delicate control was performed during the coil link so that the diameter of these tubes would not be reduced (for example, Japanese Patent Application Laid-Open No. 63235023). 〉.
［発明が解決しようとする課題］
しかしながら、これらの筒を装入するには、テンション
リールのマンドレルに予めこれらの筒を装着し、その上
に塗装鋼帯を巻き取る。筒が紙管の場合であっても重い
ものは５０ｋｇにも達し、この作業には時間も要し、且
っン・ずしも安全ではない。又強度が不足する筒を用い
てコイル漬れが起きたものは良好な平坦度を得ることが
困難である等の問題があった。[Problems to be Solved by the Invention] However, in order to load these tubes, the tubes are previously attached to the mandrel of the tension reel, and the coated steel strip is wound onto the tubes. Even if the cylinder is a paper tube, the weight can reach up to 50 kg, the work is time consuming, and the nun and sushi are not safe. Further, there are problems in that it is difficult to obtain good flatness when a cylinder with insufficient strength is used and the coil sag occurs.
これらの問題を解決するためにこの発明は行われたもの
で、プラスチックや紙の筒を用いなくても、保護皮膜を
工夫することによって、巻かれている隣接する板間の板
のずれをなくしコイル漬れを防止する技術の提供を目的
とするものである。This invention was made to solve these problems, and without using plastic or paper tubes, by devising a protective film, it is possible to eliminate the misalignment between adjacent rolled plates. The purpose of this invention is to provide a technology that prevents coil soaking.
［課題を解決するための手段］
この目的を達成するための手段は、塗膜の上に次のよう
な保護皮膜を持つ保護皮膜ラミネート塗装鋼板てあり及
びこれらの保護皮膜ラミネート塗装鋼板を製造する次の
ような保護皮膜ラミネート塗装鋼板の製造方法である。[Means for Solving the Problem] The means for achieving this objective includes manufacturing a protective film laminate coated steel plate having the following protective film on the coating film, and manufacturing these protective film laminate coated steel plates. The method for manufacturing a protective film laminated steel sheet is as follows.
■ 保護皮膜ラミネート塗装鋼板
（１）保護皮膜の表面の摩擦係数が０．２５以上０４０
以下である保護皮膜ラミネート塗装鋼板。■ Protective film laminated steel plate (1) The friction coefficient of the surface of the protective film is 0.25 or more 040
Protective film laminate coated steel plate which is:
（２）保護皮膜がポリオレフィン系樹脂を基材とし表面
の硬度かショア硬度５４以上２０以上である保護皮膜ラ
ミネート塗装鋼板。(2) A protective film-laminated steel plate in which the protective film is based on a polyolefin resin and has a surface hardness of 54 or more and Shore hardness of 20 or more.
（３）保護皮膜がポリエチレン又は８５ｗｔ％以下のポ
リプロピレンを含むポリエチレンを基材とする保護皮膜
ラミネート塗装鋼板。(3) A steel plate coated with a protective film laminate whose base material is polyethylene or polyethylene containing 85 wt% or less of polypropylene.
■ 保護皮膜ラミネート塗装鋼板の製造方法（１）鋼帯
に連続的に塗装を施し塗膜を形成した後、この塗膜の上
に表面の摩擦係数が０．２５以上０．４０以下である保
護皮膜をラミネートする保護皮膜ラミネート塗装鋼板の
製造方法。■ Method for manufacturing laminated steel sheets with protective film (1) After coating the steel strip continuously to form a coating film, a protective film with a surface friction coefficient of 0.25 or more and 0.40 or less is applied on top of this coating film. A method for producing a protective film-laminated steel plate by laminating a film.
（２）鋼帯に連続的に塗装を施し塗膜を形成した後、こ
の塗膜の上に表面の硬度がショア硬度で５４以上２０以
上である保護皮膜をラミネートする保護皮膜ラミネート
塗装鋼板の製造方法。(2) Manufacture of a protective film laminated steel sheet by continuously applying coating to a steel strip to form a coating film, and then laminating a protective film with a surface hardness of 54 or more and 20 or more in Shore hardness on top of this coating. Method.
＋３） ｔＩ４帯に連続的に塗装を施し塗膜を形成した
後、この塗膜の上にポリエチレン又は８５ｗｔ％以下の
ポリプロピレンを含むポリエチレンを基材とする保護皮
膜をラミネートする保護皮膜ラミネト塗装鋼板の製造方
法。+3) A protective coating laminated steel plate in which a coating is applied continuously to the tI4 band to form a coating, and then a protective coating based on polyethylene or polyethylene containing 85 wt% or less of polypropylene is laminated on top of this coating. Production method.
［作用］
塗装鋼帯が巻き取られるときは、コントロールされた張
力がかがっており、コイルは緩み無く極めて緊密に巻か
れる。この状態で、コイルの外側にはバンドががけられ
るので、前述したようにコイルの外周が拡がることはな
い、一方向側の板に注目すると、これは外側の板によっ
て強制的に円周状に変形させられ、それに対する反発力
によって自らはその径を拡げようとしているので、他に
力が作用しなければその優の形状を維持する。しかし、
コイルがその直径方向と重力の方向とが−致するように
置かれた時、コイルの自重はコイルの断面形状を円から
扁平臼に変形させるように働く。この力は内側の板と外
側の板との間にずれを生しさせるように作用する。しか
し、板は上記の反発力によって外側の板に押し付けられ
ているのて、両者の開の摩擦力によって簡単にはずれを
起こさない。作用する力が摩擦力を超えたとき、はじめ
てずれか生じてコイル漬れか起こる。[Operation] When the coated steel strip is wound, a controlled tension is applied, and the coil is wound extremely tightly without any loosening. In this state, a band is placed on the outside of the coil, so the outer circumference of the coil will not expand as mentioned above.If you look at the plate on one side, it will be forced into a circumferential shape by the outer plate. It is deformed, and because of the repulsive force it tries to expand its diameter, it will maintain its excellent shape unless other forces act on it. but,
When the coil is placed so that its diameter direction matches the direction of gravity, the coil's own weight acts to change the cross-sectional shape of the coil from a circle to a flat mortar. This force acts to create a displacement between the inner and outer plates. However, since the plate is pressed against the outer plate by the above-mentioned repulsive force, it does not easily come off due to the frictional force between the two plates. Only when the acting force exceeds the frictional force does a deviation occur and coil dipping occurs.
したがって、板の表面の摩擦力を大きくしてやればコイ
ル漬れは起こり難くなる。塗装鋼板に従来膜も多用され
ていたポリプロピレンを基材とする保護皮膜の摩擦係数
を測定してみると、Ｏ２から０．２４の範囲であった。Therefore, if the frictional force on the surface of the plate is increased, coil dipping becomes less likely to occur. When we measured the coefficient of friction of a polypropylene-based protective coating, which has conventionally been widely used on painted steel plates, it was in the range of 0.24 from O2.
そこで、別の保護皮膜も含め摩擦係数の異なる保護皮膜
を付し、コイル内側に筒を用いずにコイル漬れの発生す
る率を調べた。得られた結果を第１図に示す。図で、縦
軸はコイル漬れ発生率、横軸は摩擦係数である。摩擦係
数のコイル漬れに及ぼす影響は非常に大きく、摩擦係数
の増加にともないコイル発生率は急減し、摩擦係数が０
．２４を超えると全く発生しなくなる。Therefore, we applied protective coatings with different coefficients of friction, including other protective coatings, and investigated the incidence of coil soaking without using a tube inside the coil. The results obtained are shown in FIG. In the figure, the vertical axis is the coil sagging occurrence rate, and the horizontal axis is the friction coefficient. The influence of the friction coefficient on coil sagging is very large, and as the friction coefficient increases, the coil occurrence rate decreases rapidly until the friction coefficient reaches 0.
．． If it exceeds 24, it will not occur at all.
即ち、保護皮膜表面の摩擦係数が０．２５以上である保
護皮膜ラミネート塗装鋼板であると、コイルの自重では
重なり合った板の闇にずれが生ぜずコイル漬れが起こら
ない。しかし、保護皮膜となるフィルムはロール状に巻
かれており、ラミネートされるときに巻き戻される。こ
のとき、摩擦係数が大き過ぎると大きな巻き戻し張力が
必要となり、フィルム幅を縮小させたり甚だしい場合は
切断したりすることがある。このため、摩擦係数は０．
４０以下であることが要求される。That is, if the protective film laminate coated steel plate has a friction coefficient of 0.25 or more on the surface of the protective film, the weight of the coil will not cause the overlapped plates to shift, and the coil will not sag. However, the film that serves as the protective coating is wound into a roll and is rewound when laminated. At this time, if the coefficient of friction is too large, a large unwinding tension is required, which may reduce the film width or, in extreme cases, cause the film to be cut. Therefore, the friction coefficient is 0.
It is required that it be 40 or less.
保護皮膜には、ポリプロピレンの他にポリエチレン、錯
酸ビニール系或いはアクリル系等のポリオレフィン系の
フィルム等が用いられるが、保護皮膜の硬度が大きい場
合にはコイル漬れは起き易く、小さい場合には起き難い
。保護皮膜の硬度とコイル漬れの発生率との関係を調べ
ると、ショア硬度で５５以上の場合にはコイル漬れの発
生が見られるが、５５未満ではコイル潰れは発生しない
、即ち、オレフィン系の保護皮膜の硬度がショア硬度で
５４以下であるとコイル漬れは防止される。しかし、硬
度が小さ過ぎると保護皮膜としての保護機能が低下した
り、引き剥がす時に千切れ易いなどの問題が発生する。In addition to polypropylene, polyolefin films such as polyethylene, complex acid vinyl, or acrylic are used for the protective film. However, if the hardness of the protective film is high, coil soaking is likely to occur; It's hard to wake up. Examining the relationship between the hardness of the protective film and the incidence of coil soaking, we found that coil soaking occurs when the Shore hardness is 55 or higher, but coil crushing does not occur when the Shore hardness is less than 55. If the hardness of the protective coating is 54 or less on the Shore hardness, coil soaking is prevented. However, if the hardness is too low, problems such as a decrease in the protective function of the protective film and a tendency to tear the film when peeled off occur.
このため、ショア硬度で２０以上の硬さは必要である。For this reason, it is necessary to have a hardness of 20 or more on the Shore hardness scale.
前述したコイル巻き取り時にコントロールされる張力は
、一般に、巻き始めに極端に大きくその後減少するが、
これによってコイルの場所による板同士を押し付ける力
が決まる。保護皮膜の表面硬度が５４以下である保護皮
膜ラミネート塗装鋼板では、この板同士を押し付ける力
が、板同士の接触面積の増加などによって摩擦力の増加
となって活かされ、板同士のずれを防止する。The tension controlled during coil winding as described above is generally extremely large at the beginning of winding and then decreases.
This determines the force with which the plates are pressed together depending on the location of the coil. For protective film laminated steel plates whose surface hardness is 54 or less, the force that presses the plates together increases frictional force due to an increase in the contact area between the plates, thereby preventing the plates from slipping against each other. do.
前述したように、保護皮膜がポリプロピレンの場合は、
摩擦係数が小さく又硬度も大きいが、ポリエチレンは軟
らかい樹脂であり、保護皮膜成分としてポリプロピレン
にポリエチレンを加えると摩擦係数は大きくなり、硬度
は小さくなる。この効果は、ポリエチレンが数％加わっ
ても得られるが、１５％以上加えると摩擦係数は０２５
以上となり、硬度は０５４以下となってコイル漬れは防
止される。保護皮膜成分がポリエチレン単独の場合も同
様にコイル漬れは発生しない。その上、ポリエチレンや
ポリプロピレン樹脂は安価で用い易い。As mentioned above, if the protective film is polypropylene,
Although it has a low coefficient of friction and high hardness, polyethylene is a soft resin, and when polyethylene is added to polypropylene as a protective coating component, the coefficient of friction increases and the hardness decreases. This effect can be obtained even if a few percent of polyethylene is added, but if 15% or more is added, the friction coefficient will be 0.25%.
As a result, the hardness becomes 054 or less, and coil soaking is prevented. Similarly, when the protective film component is polyethylene alone, coil soaking does not occur. Moreover, polyethylene and polypropylene resins are inexpensive and easy to use.
保護皮膜は、一般に、その概要を第２図に示す装置によ
ってラミネートされる５図で、１は保護皮膜ラミネート
鋼帯、２は保護皮膜、３は塗装鋼帯、４は巻き取りリー
ル、５はラミネートロル、６はプライドルロールである
。保護皮ＷＡ２には最表層に保護機能を有する基材があ
り、再下層に塗装鋼板表面との粘着層があって、その間
に基材と粘着層を繋ぐ複数の層がある。そして、保護皮
膜２は、この粘着層によって、塗装鋼板３の表面に、ラ
ミネートロール５によって、ラミネートされる。保護皮
膜ラミネート塗装鋼板は巻き取りリール１によって巻き
取られるが、このときの張力は巻き取りリール１とプラ
イドルロール６とによって調整される。このラミネート
する保護皮膜を、その基材について次のａ）がらＣ）ま
での三つの条件の何れかを満たすものから選択すると、
ロールフィルムを巻き戻す際に過剰の張力を要せず、自
重でコイル漬れが発生せず、しかも、保護皮膜が不必要
になったとき引き剥がし易いコイルラミネート塗装鋼板
を製造することが出来る。The protective film is generally laminated by an apparatus whose outline is shown in FIG. Laminate roll 6 is a pridle roll. The protective skin WA2 has a base material having a protective function as the outermost layer, an adhesive layer with the surface of the painted steel plate as the lower layer, and a plurality of layers connecting the base material and the adhesive layer in between. The protective film 2 is then laminated onto the surface of the coated steel plate 3 using the adhesive layer by a laminating roll 5. The protective film laminate coated steel plate is wound up by the take-up reel 1, and the tension at this time is adjusted by the take-up reel 1 and the priddle roll 6. When the protective film to be laminated is selected from those that satisfy any of the following three conditions from a) to C) regarding the base material,
To manufacture a coil-laminated coated steel sheet that does not require excessive tension when unwinding a roll film, does not cause coil soaking due to its own weight, and is easy to peel off when a protective film becomes unnecessary.
（ａ＞摩擦係数が０．２５以上０．４０以下である保護
皮膜。(a>Protective film having a coefficient of friction of 0.25 or more and 0.40 or less.
（ｂ）ポリオレフィン系樹脂で硬度が５４以下２５以上
である保護皮膜。(b) A protective film made of polyolefin resin and having a hardness of 54 or less and 25 or more.
（Ｃ）ポリエチレン又は８５％以下のポリエチレンを含
むポリエチレン樹脂である保護皮膜。(C) A protective coating that is polyethylene or a polyethylene resin containing 85% or less polyethylene.
［実施例］
厚さ０．６＋ｕの塗装鋼板に、第２図に示す装置を用い
て、厚さ５５μｍの各種の保護皮膜をラミネートし、筒
を用いずにコイルに巻き取った後玉日間装置して、種類
殊に１５乃至２０個のコイルについて、コイル漬れの発
生状況を調べた。用いた保護皮膜の基材については硬度
と摩擦係数を測定した。硬度測定は、ＪＩＳ−に−７２
１５−タイプＤによって行った。摩擦係数は、保護皮膜
と塗装鋼板裏面との間のものて′、斜面上を滑り出すと
きの傾斜角より求めた。[Example] Various protective films with a thickness of 55 μm were laminated onto a coated steel plate with a thickness of 0.6+U using the equipment shown in Figure 2, and the film was wound into a coil without using a tube. The occurrence of coil soaking was investigated for 15 to 20 different types of coils. The hardness and friction coefficient of the base material of the protective film used were measured. Hardness measurement is JIS-72
15-Performed by Type D. The coefficient of friction was determined from the angle of inclination between the protective film and the back surface of the coated steel plate when sliding on the slope.
調べた結果を第１表に示す。The results of the investigation are shown in Table 1.
第１表
この発明の範囲内の実施例、即ち、試験Ｎ［Ｌ １がら
試験階６までてはコイル漬れの発生は皆無であった。Table 1 In the examples within the scope of the present invention, that is, from test N[L1 to test floor 6, there was no occurrence of coil soaking.
一方、発明の範囲を外れた比較例、即ち、硬度が高く摩
擦係数の小さい試験Ｎ［Ｌ ７及び試験Ｎａ ８では、
５０％以上のコイルにコイル漬れが発生した。On the other hand, in comparative examples outside the scope of the invention, that is, test N [L 7 and test Na 8, which have high hardness and low friction coefficient,
Coil dipping occurred in more than 50% of the coils.
なお、コイルの巻き取り時マンドレルに紙箱を装着する
必要もなく、省力化が図られると同時に作業に伴う危険
のおそれも解消した。Furthermore, there is no need to attach a paper box to the mandrel when winding the coil, which saves labor and eliminates the risk of danger associated with the work.
［発明の効果］
この発明によれば、保護皮膜を選択することによって、
塗装鋼板かコイルに巻かれたとき、互いに接する板間に
大きな摩擦力が働き板間のずれが発生しない。このため
、コイル巻き取り時に巻き取りリールのマンドレルに筒
を装着しなくても、コイル漬れを防止することが出来る
。このように、省力及び安全化が図られると同時に、平
坦度の良い塗装鋼販を確実に製造できるようにしたこの
発明の効果は大きい。[Effect of the invention] According to this invention, by selecting a protective film,
When painted steel plates are wound into a coil, a large frictional force acts between the plates that are in contact with each other, so that no misalignment occurs between the plates. Therefore, it is possible to prevent the coil from being soaked without attaching a tube to the mandrel of the take-up reel when winding the coil. As described above, the present invention has a great effect in that it saves labor and improves safety, while at the same time making it possible to reliably manufacture coated steel sheets with good flatness.
とコイル漬れ発生率との関係を示す図、第２図は保護皮
膜ラミネート部の射視図である。FIG. 2 is a perspective view of the protective film laminate section.
Claims (6)
この保護皮膜表面の摩擦係数が０．２５以上０．４０以
下であることを特徴とする保護皮膜ラミネート塗装鋼板
。(1) In a painted steel plate with a protective film on the paint film,
A steel plate coated with a protective film laminate, characterized in that the surface of the protective film has a coefficient of friction of 0.25 or more and 0.40 or less.
の塗膜の上に表面の摩擦係数が０．２５以上０．４０以
下である保護皮膜をラミネートすることを特徴とする保
護皮膜ラミネート塗装鋼板の製造方法。(2) The steel strip is coated continuously to form a coating film, and then a protective film having a surface friction coefficient of 0.25 or more and 0.40 or less is laminated on top of the coating film. A method for manufacturing a protective film laminated steel plate.
の硬度がショア硬度５４以下２０以上であることを特徴
とする保護皮膜ラミネート塗装鋼板。(3) A steel plate coated with a protective film laminate, characterized in that the protective film is based on a polyolefin resin and has a surface hardness of 54 or less and 20 or more in Shore hardness.
の塗膜の上に表面の硬度がショア硬度５４以下２０以上
である保護皮膜をラミネートすることを特徴とする保護
皮膜ラミネート塗装鋼板の製造方法。(4) A protective film laminate characterized by continuously applying a coating to a steel strip to form a coating film, and then laminating a protective coating having a surface hardness of 54 or less and 20 or more in Shore hardness on top of this coating. A method for producing painted steel sheets.
リプロピレンを含むポリエチレンを基材とすることを特
徴とする保護皮膜ラミネート塗装鋼板。(5) A steel plate coated with a protective film laminate, characterized in that the protective film is based on polyethylene or polyethylene containing 85 wt% or less of polypropylene.
の塗膜の上にポリエチレン又は８５ｗｔ％以下のポリプ
ロピレンを含むポリエチレンを基材とする保護皮膜をラ
ミネートすることを特徴とする保護皮膜ラミネート塗装
鋼板の製造方法。(6) After continuously applying coating to the steel strip to form a coating film, a protective film based on polyethylene or polyethylene containing 85 wt% or less of polypropylene is laminated on top of the coating film. A method for manufacturing a protective film laminated steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2108083A JP2768430B2 (en) | 1990-04-24 | 1990-04-24 | Protective film laminated coated steel sheet and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2108083A JP2768430B2 (en) | 1990-04-24 | 1990-04-24 | Protective film laminated coated steel sheet and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH045039A true JPH045039A (en) | 1992-01-09 |
| JP2768430B2 JP2768430B2 (en) | 1998-06-25 |
Family
ID=14475445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2108083A Expired - Fee Related JP2768430B2 (en) | 1990-04-24 | 1990-04-24 | Protective film laminated coated steel sheet and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2768430B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931397A (en) * | 1972-07-13 | 1974-03-20 | ||
| JPS5858180A (en) * | 1981-10-05 | 1983-04-06 | Nippon Paint Co Ltd | Treatment for temporary corrosion-prevention of pipe or rod article |
-
1990
- 1990-04-24 JP JP2108083A patent/JP2768430B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931397A (en) * | 1972-07-13 | 1974-03-20 | ||
| JPS5858180A (en) * | 1981-10-05 | 1983-04-06 | Nippon Paint Co Ltd | Treatment for temporary corrosion-prevention of pipe or rod article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2768430B2 (en) | 1998-06-25 |
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