JP2002113809A - Resin film laminate plating steel sheet, can using the same and method for manufacturing resin film laminate plating steel sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a practical resin film laminate plating steel sheet having excellent corrosion resistance for a content having strong corrosiveness and excellent processing adhesive properties of a film when used as a material for a can, the can using the same and a method for manufacturing the resin film laminate plating steel sheet. SOLUTION: The method for manufacturing the resin film laminate plating steel sheet comprises the steps of forming a prescribed amount of an Sn-plating layer or a prescribed amount of an Ni-plating layer and an Sn-plating layer on the surface of the steel sheet, forming an organically treated coating layer having a prescribed thickness on its upper layer, and further laminating a non- stretched resin film on its upper layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a resin film laminated plated steel sheet, a can using the same, and a method for producing a resin film laminated plated steel sheet. More specifically, a resin film laminated plated steel sheet having excellent processing adhesion of a resin coating layer even after drawing and ironing the resin film laminated plated steel sheet, a can formed by drawing and ironing the resin film, and a resin film used therefor The present invention relates to a method for manufacturing a laminated plated steel sheet.

[0002]

2. Description of the Related Art In recent years, a metal plate is coated with an oriented film in which a polyester resin is biaxially stretched, and squeezing or squeezing or ironing is used to increase the reduction rate of the side wall of the can. Cans made using the processing method,
It is mainly used for beverage cans. When the biaxially oriented polyester resin film-coated metal plate is drawn and ironed, the resin film coated on the surface of the metal plate cannot completely cope with processing with a large amount of deformation, and minute cracks are generated in the film to deteriorate the corrosion resistance. In some cases, the film breaks during processing and breaks down, making it impossible to make cans.It is extremely important to further increase the rate of reduction in can side wall thickness by drawing and drawing and ironing to reduce the cost of cans. It has become difficult.

As a metal plate coated with a polyester resin film, a layer composed of a lower metal chromium layer and an upper chromium hydrated oxide layer is formed on a steel plate mainly from the viewpoint of working adhesion. Electrochromic acid-treated steel sheets (also called tin-free steel or TFS) have been widely used.
However, the polyester resin film is coated on TFS,
When it is formed into a two-piece can with the body and bottom integrated by drawing or drawing and ironing, and filled with contents such as highly corrosive acidic beverages, the TF of the resin film coating base
The corrosion resistance of S may not be sufficient and may corrode.

[0004] Therefore, it has been attempted to use a Sn-plated steel sheet having excellent corrosion resistance against highly corrosive contents as a coating base of a resin film. Tokiko Sho 61
No. -3676 discloses a method in which a Sn-plated steel sheet is heated to a temperature equal to or lower than the melting point of Sn, and a polyester resin film is abutted and pressurized for temporary bonding, and then heated to a temperature equal to or higher than the melting point of Sn for full bonding. are doing. The resin-coated plated steel sheet obtained by this method has poorer process adhesion of the resin film than the resin-coated steel sheet having TFS as a coating base, and the resin film peels off when subjected to drawing or drawing and ironing. Cannot be formed into a coated can.

As an attempt to improve the corrosion resistance and the work adhesion as described above, Japanese Patent Application Laid-Open No. Hei 3-239538 discloses a method in which a Sn plating solution having a specific composition is used, the steel sheet surface has many exposed portions, and the electrodeposited Sn is used. Sn-plated steel sheet and TFS formed by applying Sn plating interspersed with chromium and then forming a layer consisting of a lower metal chromium layer and an upper chromium hydrated oxide layer
Discloses a resin-coated steel sheet obtained by laminating a polyester resin film on a composite surface-treated steel sheet. Although this resin-coated steel sheet has excellent corrosion resistance, the process of forming two layers of Sn plating and a metal chromium layer and a chromium hydrated oxide layer is complicated, and the area of the exposed portion of the steel sheet can be controlled within a certain range. Difficult and impractical.

Japanese Patent Application Laid-Open No. 5-98465 discloses that a steel sheet is subjected to Sn plating or a small amount of Ni plating, and then heated to a temperature higher than the melting point of Sn to form a thermoplastic resin film in a state where Sn is melted. A method of quenching immediately after lamination under pressure is disclosed. According to this method, the Sn is brought into contact with the thermoplastic resin film in a molten state, the oxide film formed on the Sn surface during the pressure lamination is broken, and the active metal Sn comes into direct contact with the thermoplastic resin film. It is said that excellent processing adhesion can be obtained. However, according to this method, the resin-coated plated steel sheet immediately after laminating the thermoplastic resin film shows excellent processing adhesion,
As time passes, the processing adhesion tends to decrease.

[0007]

SUMMARY OF THE INVENTION The present invention overcomes the above-mentioned drawbacks, and when used as a material for cans, has excellent corrosion resistance to highly corrosive contents, and has good processing adhesion of the film. It is an object of the present invention to provide a practical and excellent resin film laminated plated steel sheet, a can using the same, and a method for producing the resin film laminated plated steel sheet.

[0008]

Means for Solving the Problems The resin film laminated plated steel sheet of the present invention has a Sn plated layer formed on the steel sheet surface,
An organic treatment film layer is formed on the upper layer, and a resin film laminated plated steel sheet in which a non-oriented resin film is further laminated thereon, or a Ni plating layer on the steel sheet surface, Sn
This is a resin film laminated plated steel sheet in which a plating layer is sequentially formed, an organic treatment film layer is formed thereon, and a non-oriented resin film is further laminated thereon, and the thickness of the organic treatment film is 0. 02 to 1 μm, the organic treatment film is one of an acrylic modified epoxy resin, an epoxy / acryl / phenol resin, an epoxy / phenol resin, and a film formed by applying and drying a silane coupling agent. 100-2800mg / m
² , the Ni plating layer is 10 to 1
It is characterized in that it is formed in an amount of 00 mg / m ² and that the resin film is a film made of a polyester resin having an intrinsic viscosity of 0.6 to 1.4.

[0009] The can of the present invention is a can using any one of the above-mentioned resin film laminated plated steel sheets. The method for producing a resin film laminated plated steel sheet according to the present invention is characterized in that both sides of the steel sheet have an S content of 100 to 2800 mg / m ² per side.
After performing the n-plating, an organic treatment film is formed so as to have a thickness of 0.02 to 1 μm, and then heated to form a film made of a polyester resin having an intrinsic viscosity of 0.6 to 1.4 on the surface. A method for producing a resin film laminated plated steel sheet which is brought into contact with a pair of pressure rolls and sandwiched and pressed, or 10 to 100 mg / side on both sides of the steel sheet.
plated with Ni in an amount of m ^2, followed 100-2800
mg / m ² of Sn plating, the thickness is 0.0
An organic treatment film is formed so as to have a thickness of 2 to 1 μm, and then heated, a film made of a polyester resin having an intrinsic viscosity of 0.6 to 1.4 is brought into contact with the surface, and the two are pressed with a pair of pressure rolls. A method for producing a resin film laminated plated steel sheet to be sandwiched and pressed, wherein the heating temperature is equal to or lower than the melting point of Sn, the heating temperature is equal to or lower than the melting point of the polyester resin, the organic treatment film is an acrylic-modified epoxy resin, It is characterized by being composed of one of an epoxy / acryl / phenol resin, an epoxy / phenol resin, and a coating obtained by applying and drying a silane coupling agent.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, when used as a material for cans, it has excellent corrosion resistance to highly corrosive contents, and is practically excellent in processing adhesion of a film. As a result of intensive studies aimed at obtaining resin film laminated plated steel sheets, a fixed amount of Sn plated layer, or a fixed amount of Ni plated layer and Sn plated layer were formed on the surface of the steel sheet, and an organic The above object can be achieved by forming a treated coating layer and further forming a resin-coated plated steel sheet on which a non-oriented resin film is laminated thereon. The Sn plating layer has a feature of being able to prevent corrosion of steel as a base metal due to its electrochemical characteristics. However, on the other hand, a tin oxide layer is easily formed on the surface, and the tin oxide layer is agglomerated. Since the force is small, there is a drawback that it is easily broken and the adhesion to the resin layer is insufficient. According to the present invention, an organic treatment film layer is provided on a Sn plating layer of a plated steel sheet, and a non-oriented resin film is provided thereon, thereby maintaining an excellent level of adhesion with the resin layer and a metal layer. Can also prevent corrosion under the film. This is presumably because the organic treatment film suppresses the formation of the Sn oxide film and improves the adhesion of the resin film.

The contents of the present invention will be described below. First, a plated steel sheet serving as a coating base for laminating a resin film of a resin film laminated plated steel sheet will be described. One of the following two types is used as the plated steel sheet. (1) A plated steel sheet in which an Sn plating layer is formed on the surface of a steel sheet, and an organic treatment film layer is formed thereon. (2) A plated steel sheet in which a Ni plating layer and a Sn plating layer are sequentially formed on the surface of a steel sheet, and an organic treatment film layer is formed thereon.

In the case of (1) in which only a Sn plating layer is formed on the surface of a steel sheet, a known plating bath such as a ferrostan bath or a halogen bath used for the production of tinplate is used, and a plating bath of 100 to 2 is used.
Plating is performed in an amount of 800 mg / m ² . Plating amount is 100
If it is less than ² mg / m ² , sufficient corrosion resistance cannot be obtained, and 2800
If it exceeds mg / m ² , the effect of improving corrosion resistance is saturated. In the case of (2) in which a Ni plating layer and a Sn plating layer are sequentially formed on the surface of a steel sheet, plating is performed in an amount of 10 to 100 mg / m ² using a known Watt bath or sulfamic acid bath as a Ni plating bath. By providing this Ni plating layer, the corrosion resistance is further improved. When the plating amount is less than 10 mg / m ² , no effect is observed in improving the corrosion resistance, and the plating amount is 100 mg / m 2.
^If it exceeds ² , the effect of improving corrosion resistance is saturated, and it is not economically advantageous. An Sn plating layer is further formed thereon in the same manner as in (1). The plating amount is limited for the same reason as in the case (1).

After forming only the Sn plating layer or the Ni plating layer and the Sn plating layer on the surface of the steel sheet as described above, the plating steel sheet is heated to the melting point of Sn or more as is practiced in tinplate production. The molten tin treatment for heating may be performed.
By performing the molten tin treatment, an alloy layer is formed between the steel sheet and the plating layer, and the corrosion resistance is improved. In particular, when a Ni plating layer is formed below the Sn plating layer, a dense alloy layer is generated, and excellent corrosion resistance is obtained.

An organic coating layer is formed on the plated layer of the plated steel sheet obtained as described above. The organic treatment coating layer is formed by applying a solvent-based or water-soluble organic compound using a usual coating method such as a roll coating method, and then drying the applied organic compound. Examples of the organic compound include acrylic-modified epoxy resin, epoxy / phenol resin obtained by mixing epoxy resin and phenol resin, epoxy / acryl / phenol resin obtained by mixing epoxy resin, acrylic resin and phenol resin, and silane coupling agent. A film formed by coating and drying is preferably used.
The coating thickness is preferably from 0.02 to 1 μm as a thickness after drying. It is extremely difficult to apply evenly and uniformly with a thickness of less than 0.02 μm, and uniform working adhesion cannot be exhibited. If the coating thickness exceeds 1 μm, the processing adhesion tends to decrease, which is not preferable. As described above, a plated steel sheet serving as a coating base for laminating a resin film is obtained.

Next, a resin film to be laminated on the plated steel sheet obtained as described above will be described. The resin film applied to the present invention may be a single-layer film or a multilayer film having two or more layers, and is preferably a film made of a thermoplastic resin, particularly a polyester resin. As the polyester resin, those having an ester unit such as ethylene terephthalate, ethylene isophthalate, butylene terephthalate, and butylene isophthalate are preferable, and a polyester mainly containing at least one ester unit selected from these is preferable. Is preferred. At this time, each ester unit may be copolymerized, and further, a homopolymer or a copolymer of two or more types of each ester unit may be blended and used. Other than the above, as the acid component of the ester unit, such as those using naphthalenedicarboxylic acid, adipic acid, sebacic acid, trimellitic acid, etc., and as the alcohol component of the ester unit, propylene glycol, diethylene glycol, neopentyl glycol, What used cyclohexane dimethanol, pentaerythritol, etc. may be used. The polyester may be a laminate of two or more polyester layers composed of a homopolyester or a copolyester, or a blend of two or more thereof.
For example, the lower layer of the polyester film is a copolymerized polyester layer having excellent thermal adhesiveness, and the upper layer of the tape is formed of PE having excellent strength and heat resistance and excellent barrier properties against corrosive components.
It can be a T layer or a modified PET layer.

In the present invention, it is assumed that a film made of a non-oriented polyester resin is used as described later. In the operation of laminating the polyester resin film on the plated steel sheet, the resin may be cut or the polyester resin film may be laminated. Even if the steel sheet is subjected to severe forming processing such as drawing or drawing and ironing, the resin will not be scraped or scratched, and it will not crack, break or peel further.
It is necessary to increase the intrinsic viscosity of the resin and to strengthen the resin.
Therefore, the intrinsic viscosity (IV) of the above polyester resin
Is preferably in the range of 0.6 to 1.4, and 0.8 to 1.4.
It is more preferable to be in the range of 1.2. Intrinsic viscosity
When a polyester resin having a molecular weight of less than 0.6 is used, the strength of the resin is extremely reduced, and the resin cannot be applied to a can formed by drawing or drawing and ironing. On the other hand, the intrinsic viscosity of the resin
When the ratio exceeds 1.4, the melt viscosity when the resin is heated and melted becomes extremely high, and it becomes extremely difficult to laminate the polyester resin film on the plated steel sheet.

The thickness of the resin film is preferably 5 to 60 μm for a single-layer film, and is preferably 10 to 40 μm.
Is more preferable. When the thickness is less than 5 μm, the work of laminating on the plated steel sheet becomes extremely difficult, and the resin layer after drawing or drawing and ironing is apt to have defects. In this case, the resistance to corrosion components is not sufficient. Increasing the thickness will provide sufficient permeation resistance, but increasing the thickness beyond 60 μm is economically disadvantageous. In the case of a multilayer film, the ratio of the thickness of each layer varies from the viewpoint of moldability, permeation resistance, or the effect on the flavor of the contents, but each layer is formed so that the total thickness is 5 to 60 μm. Adjust the thickness of the. In addition, when a resin film is formed into a film, a coloring pigment within a range that does not impair properties required in the resin,
A film may be formed by adding a stabilizer, an antioxidant, a lubricant, and the like.

The non-oriented resin film is formed as follows. That is, the resin pellets are heated and melted at a temperature 20 to 40 ° C. higher than the melting temperature of the resin using an extruder, and the molten resin is extruded from a T-die onto a casting roll cooled in the form of a film. As a coiler.

Next, a method of laminating a resin film on a plated steel sheet will be described. First, the long strip-shaped plated steel sheet wound in a coil shape is continuously heated while being unwound. The heating temperature is not less than the melting point of Sn which is a plating layer and not less than the melting temperature of a resin film (in the case of a multilayer film, a resin layer in contact with a plated steel sheet, the same applies hereinafter), not less than the melting point of Sn and less than the melting temperature of a resin film, Any temperature lower than the melting point of Sn and higher than the melting temperature of the resin film, lower than the melting point of Sn and lower than the melting temperature of the resin film may be used. It is preferable to heat to a temperature or higher. However, since the non-oriented film adheres to the plated steel sheet even at a temperature lower than the melting temperature of the resin film, Sn
The resin film can be laminated on the plated steel sheet even when the resin film is heated to a temperature lower than the melting point and lower than the melting temperature of the resin film. The preferred temperature is 100 to 232 ° C, and the more preferred temperature is 150 to 220 ° C.

A continuously moving long strip-shaped plated steel sheet is heated to the above-mentioned temperature range, the resin film is brought into contact with one or both surfaces thereof, and the two are sandwiched and pressed by a pair of pressure rolls. Cool immediately. As described above, the resin film laminated plated steel sheet of the present invention is obtained.

A can using the resin film laminated plated steel sheet of the present invention is formed into a can as follows. That is,
A circular blank is punched from a resin film laminated plated steel sheet, and then subjected to one or more stages of drawing,
A plurality of stages of drawing or further ironing are performed so that the bottom and the body are integrally formed, and the can is formed into a can having a high side wall thickness reduction rate. When forming into a can, the resin film layer of the can body is given a uniaxial orientation along with the plastic flow of the resin film laminated plated steel sheet in the can axis direction, and when ironing is performed, the same as rolling. Surface orientation is given,
These molecular orientations are useful for improving heat resistance and mechanical strength.

[0022]

Next, the present invention will be described in more detail by way of examples. (Example) A plating layer shown in Table 1 was formed on both surfaces of a low carbon steel sheet having a thickness of 0.18 mm and a width of 800 mm.
Next, the organic resin film layers shown in Table 1 were formed on the plated surfaces of these plated steel sheets. The resins described by the symbols of the resin types in the table are the following resins, respectively, all of which were applied by a roll coating method and dried. AE: Roll-coated with a 28% aqueous solution of a water-soluble acrylic-modified epoxy resin EAP: Roll-coated with a 30% aqueous solution of a water-soluble epoxy / acrylic / phenolic resin EP: Roll-coated with a 20% solution of a solvent-based epoxy / phenolic resin SC: Organo Roll coat silane coupling material

[0023]

[Table 1]

Then, the coated steel sheet of each plating number shown in Table 1 was heated to the temperature shown in Table 2 and ethylene terephthalate (88 mol%) was formed on the outer surface when formed into a can.
And a copolymerized polyester resin composed of ethylene isophthalate (12 mol%) (hereinafter referred to as PETI12 (12 is the number of moles of ethylene isophthalate)) (intrinsic viscosity: 0.8,
Melting temperature: 228 ° C) and 20% of titanium oxide white pigment
A non-oriented film having a thickness of 15 μm,
Sample No. 1 in Table 2 was placed on the surface that became the outer surface when molded into a can.
The non-oriented transparent resin films shown in No. to No. 23 were respectively brought into contact with each other, sandwiched between a pair of pressure rolls and pressed, immediately immersed in water and rapidly cooled to obtain a resin film laminated plated steel sheet. In Table 2, the resin films described by the symbols of the resin compositions in the table are the resin films shown below, respectively. PETI12: Copolymerized polyester resin composed of ethylene terephthalate (88 mol%) and ethylene isophthalate (12 mol%) (melting temperature: 228 ° C.) PET: Polyethylene terephthalate (polymerization of ethylene terephthalate (100 mol%)) (melting temperature: 26
PETI5 (15) / PET12 (10): Copolymerized polyester resin whose upper layer is composed of ethylene terephthalate (95 mol%) and ethylene isophthalate (5 mol%) (melting temperature: 251 ° C.) and has a thickness of 15 μm. The lower layer is composed of ethylene terephthalate (88 mol%) and ethylene isophthalate (12 mol%) (melting temperature: 228 ° C.). Thickness: 10 μm
-Layer film consisting of a copolymerized polyester resin

[0025]

[Table 2]

The resin film-laminated steel sheet prepared as described above was formed into a drawn and ironed can as follows. First, after punching into a disk-shaped blank having a diameter of 160 mm, drawing was performed so that the surface on which the white-colored film was laminated was outside the container, and formed into a drawn container having a diameter of 100 mm. Next, redrawing is applied to 80m
It was formed into a m-diameter redrawn container. The redrawn container was subjected to redrawing and ironing at the same time as redrawing and ironing to form a cylindrical can having a can diameter of 66 mm and a height of 125 mm and a flange at a portion. Next, the upper end was trimmed to a height of 122 mm, and then the upper end was reduced in diameter so that the diameter of the open end was 57 mm. Next, the opening end was flared toward the outside of the can to form a flange so that the diameter of the flange end became 62 mm, thereby obtaining a can having a final shape before filling the contents.

The characteristics of the wrung iron cans formed from the resin film laminated steel sheets of Sample Nos. 1 to 23 as described above were evaluated as follows. [Working Adhesion] The can after drawing, ironing and flange forming was visually observed, and the working adhesion was evaluated based on the following criteria.

A: No peeling of the resin film was observed. ：: Slight peeling of the resin film to the extent that this does not pose a practical problem is observed in the flange processed part. Δ: Peeling of the resin film to a practically problematic level was observed in the flange processed portion. ×: Peeling of the resin film is observed over the entire flange processed portion.

[Corrosion Resistance] An acid drink (trade name: Acerola Drink, manufactured by Nichirei Co., Ltd.) having a pH of 2.6 is filled into a can after drawing, ironing and flange forming, and the canopy is double-wrapped at the flange portion. Tightened and sealed, and immersed in ice water.
After 5 minutes, take out and put on the outer surface of the can at a temperature of about 5 ° C.
A steel rod (weight: 1 kg) provided with steel balls having a diameter of 1/2 inch at its tip at circumferential intervals of 15 mm was dropped from a height of 40 mm to form a concave portion. After aged at 37 ° C. for one month in this state, the amount of metal eluted into the acidic beverage inside the can was measured by an atomic absorption method, and the corrosion resistance was evaluated based on the following criteria based on the amount. ◎: less than 0.3 ppm ：: 0.3 ppm or more and less than 0.5 ppm Δ: 0.5 ppm or more and less than 1.0 ppm ×: 1.0 ppm or more The results are shown in Table 3.

[0030]

[Table 3]

As shown in Table 3, the resin film laminated plated steel sheet of the present invention has excellent processing adhesion, and the drawn ironing can formed by using the resin film laminated plated steel sheet of the present invention is corrosive. It shows excellent corrosion resistance even to acidic beverages with a strong acidity.

[0032]

According to the present invention, the surface of a steel sheet is subjected to Sn plating or Ni plating and Sn plating, an organic treatment film is formed, and then heated to an intrinsic viscosity of 0.6 to
A resin film laminated plated steel sheet obtained by abutting and pressing a film made of a polyester resin which is 1.4,
Even when subjected to drawing and ironing, the resin film does not peel off and exhibits excellent processing adhesion. Further, a can formed by drawing and ironing using the resin film laminated plated steel sheet of the present invention is excellent in corrosion resistance, and the metal elution is extremely small even when filled with an acidic beverage.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65D 1/16 B65D 8/16 4K026 8/16 C23C 22/00 Z 4K044 C23C 22/00 28/00 C 28 / 00 C25D 5/26 B C25D 5/26 L B21D 22/28 B // B21D 22/28 B29K 67:00 B29K 67:00 B29L 9:00 B29L 9:00 B65D 1/00 B (72) Inventor Ishida Masayoshi Theory 1296-1 Toyoi Higashi-Toyoi, Kudamatsu City, Yamaguchi Prefecture Inside the Technical Research Institute of Toyo Kohan Co., Ltd. (72) Inventor Keiichi Shimizu 1-296-1, Higashi-Toyoi, Kudamatsu City, Yamaguchi Prefecture F-term in the Technical Research Center Toyo Kohan Co., Ltd. BA08 BA13 FA10 GA02 3E061 AA15 AB13 AC01 AC05 BA01 DA02 4F100 AA21H AB03A AB16E AB21B AH06C AK01C AK01D AK25C AK33C AK41D AK42 AK42J AK53C AL01 AL05C AL06C BA04 B A05 BA07 BA10A BA10D CA13 EG001 EH012 EH461 EH71B EH71E EH711 EJ192 EJ422 EJ861 GB16 JA06D JA13B JA13E JB02 JK06 JL01 YY00B YY00C YY00D YY00E 4F211 AA24 AA37 A073A03 AD07 A03 AD03 A08 AA07 AB01 AB02 BA03 BB22 BC01 DB03 DB06 GA04 GA12 4K026 AA10 AA12 AA22 BA01 BB06 BB08 CA37 EB08 4K044 AA02 AB02 BA06 BA10 BA21 BB04 BB05 BC02 BC04 CA16 CA18 CA53

Claims (19)

[Claims] 1. A resin film laminated plated steel sheet comprising an Sn plated layer formed on the surface of a steel sheet, an organic treatment film layer formed thereon, and a non-oriented resin film further laminated thereon. 2. A resin film laminate plating comprising a Ni plating layer and a Sn plating layer sequentially formed on the surface of a steel sheet, an organic treatment film layer formed thereon, and a non-oriented resin film laminated thereon. steel sheet. 3. The thickness of the organic treatment film is 0.02 to 1 μm.
The resin film laminated plated steel sheet according to claim 1, wherein 4. The resin film laminated plated steel sheet according to claim 1, wherein the organic treatment film is made of an acrylic-modified epoxy resin. 5. The resin film laminated plated steel sheet according to claim 1, wherein the organic treatment film is made of an epoxy / acryl / phenol resin. 6. The resin film laminated plated steel sheet according to claim 1, wherein the organic treatment coating is made of an epoxy / phenol resin. 7. The resin film laminated plated steel sheet according to claim 1, wherein the organic treated film is a film formed by applying and drying a silane coupling agent. 8. An Sn plating layer having a thickness of 100 to 2800 mg /
formed by formed in an amount of m ^2, the resin film laminated-plated steel sheet according to claim 1 or 2. 9. The Ni plating layer has a thickness of 10 to 100 mg / m ^2.
The resin film laminated plated steel sheet according to claim 2, which is formed in an amount of: 10. The resin film has an intrinsic viscosity of 0.6 to 1.
The resin film laminated plated steel sheet according to any one of claims 1 to 9, which is a film made of the polyester resin that is No. 4. 11. A can using the resin film laminated plated steel sheet according to any one of claims 1 to 10. 12. A steel sheet having 100 to 28 per side on both sides.
After applying Sn plating in an amount of 00 mg / m ² , an organic treatment film is formed so as to have a thickness of 0.02 to 1 μm, and then heated to have an intrinsic viscosity of 0.6 to 1.4 on the surface.
A film made of polyester resin
A method for manufacturing a resin film laminated plated steel sheet, in which the two are sandwiched and pressed by a pair of pressure rolls. 13. The steel sheet has a thickness of 10 to 100 per side on both sides.
mg / m ² of Ni plating, then 100 to 2
After applying Sn plating in an amount of 800 mg / m ² , an organic treatment film is formed so as to have a thickness of 0.02 to 1 μm, and then heated to have an intrinsic viscosity of 0.6 to 1.4 on the surface.
A film made of polyester resin
A method for manufacturing a resin film laminated plated steel sheet, in which the two are sandwiched and pressed by a pair of pressure rolls. 14. The method according to claim 12, wherein the heating temperature is equal to or lower than the melting point of Sn. 15. The method according to claim 12, wherein the heating temperature is equal to or lower than the melting point of the polyester resin. 16. The method according to claim 12, wherein the organic treatment film is made of an acrylic-modified epoxy resin. 17. The method according to claim 1, wherein the organic coating is epoxy / acryl /
The method for producing a resin film laminated plated steel sheet according to claim 12, comprising a phenolic resin. 18. The method according to claim 12, wherein the organic coating is made of an epoxy / phenol resin. 19. The organic treatment film according to claim 12, wherein the organic treatment film is a film obtained by applying and drying a silane coupling agent.
4. The method for producing a resin film laminated plated steel sheet according to 3.