JPH09276949A - Resin coated aluminum alloy sheet for can of drawing/ ironing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the resin coated aluminum alloy sheet capable of forming a can of drawing/ironing which hardly generates can wall breakage and has the strength needed for a can when executing combined workings of bending, unbending, successive ironing at a die shoulder radiused shape part of a small shoulder radius shape part in dry method. SOLUTION: The resin coated aluminum alloy sheet is obtained so that both faces of an aluminum alloy sheet, which has a composition, by weight, consisting of ⊖0.5% Mn, 4.0-6.0% Mg, as inevitable impurities, <=0.2% Si, <=0.4% Fe, further satisfying <=0.5% (Si+Fe) and has a sheet thickness of 0.16-0.32mm and 250-420N/mm<2> yield strength, is coated with a thermo-plastic resin.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a material used for a two-piece can manufactured by a process including a drawing and ironing process. More specifically, a two-piece can with a thin can wall is formed by processing including drawing and ironing, which does not require cleaning of the can after it is made, without cooling or lubrication with water or a water-based lubricant. TECHNICAL FIELD The present invention relates to a resin-coated aluminum alloy plate for a drawn and ironed can, which is suitable for manufacturing and is coated with a thermoplastic resin.

[0002]

2. Description of the Related Art As a two-piece can in which a can body and a can bottom are formed integrally, a DI can (Draw) obtained by drawing or ironing a tinplate or an aluminum alloy plate is used.
n andIroned Can) have been manufactured. DI can is tinplate or after drawing aluminum alloy plate,
Using several ironing dies and punches arranged continuously, cooling and lubricating with a large amount of water or water-based lubricant to reduce the wall thickness of the can to about 1/3 of the original plate thickness, followed by degreasing , Dried and painted. In recent years,
Japanese Patent No. 310223 discloses a method of manufacturing a two-piece can from a resin-coated metal plate by a combined processing method including drawing and ironing. This method differs from the conventional method for manufacturing DI cans in that after drawing a resin-coated metal plate coated with a high-temperature volatile lubricant, dry drawing and ironing are performed without using water or an aqueous lubricant. A two-piece can having a thin can wall is manufactured by a combined processing method in which the processing is performed simultaneously. According to this composite processing method, the steps of degreasing, washing, drying, and painting the can after forming it into a two-piece can become unnecessary, and a two-piece can can be manufactured without polluting the environment. According to the present invention, it is thought that this composite processing method not only reduces environmental pollution but also enables the use of aluminum alloys having a wider alloy composition range, and that more scraps of can material should be reused. This study was conducted in order to obtain a high-strength resin-coated aluminum alloy plate suitable for the processing method. Regarding a material suitable for the composite processing method, Japanese Patent Laid-Open No. 7-266496 discloses a material in which the yield strength, tensile strength, plate thickness, center line roughness, etc. are limited, and examples are JIS 5052 H3.
8 and the use of JIS 3004 H19 aluminum alloys are shown.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a method disclosed in
It is an object of the present invention to provide a resin-coated aluminum alloy plate suitable for a composite machining method as disclosed in JP-A-313223. The composite machining method targeted by the present invention is a machining method in which redrawing and ironing are performed simultaneously using a die in which a redrawing portion and an ironing portion are paired. One of the features of the combined machining method is to reduce the size of the shoulder radius of the die where redrawing is performed, and to bend and bend back the material at this die shoulder radius to reduce the thickness of the can wall. is there. In this combined machining, the thickness of the machined
Since severe bending and bending back processing is performed with a small die shoulder radius of about several times, the surface of the material is likely to be rough and cracked, and depending on the processing conditions, the can wall is broken at the die shoulder radius. Further, even in the case where no break occurs at the die shoulder radius portion, the rough surface and the surface crack cause a decrease in the adhesion between the coated resin film and the aluminum alloy plate, and the can wall break is extremely likely to occur in the subsequent ironing.
INDUSTRIAL APPLICABILITY The present invention has a strength required for a can, which is unlikely to cause breakage of a can wall when a dry process is performed to perform a complex process including a bending / unbending process in a die shoulder radius portion of a small shoulder arm and a subsequent ironing process. An object is to guide a resin-coated aluminum alloy plate used as a can body. Further, the resin-coated aluminum alloy sheet of the present invention makes it easy to reuse can body materials used in commercially available aluminum DI cans, and so-called unimetal cans in which the lid and the body are made of an alloy material of the same composition. Realization is one of the challenges. The JIS 3004H19 alloy disclosed in the examples of JP-A-7-266496 has the required strength, but the workability is insufficient for the purpose of the present invention. On the other hand, the JIS5052H38 alloy has a workability suitable for the composite processing method aimed at by the present invention, but has a small allowable Mn amount, and the amount of scrap of the 3004 alloy to be added in the production of this alloy is significantly limited.

[0004]

SUMMARY OF THE INVENTION The present invention provides a method for preparing M
n: ≤0.5%, Mg: 4.0-6.0%, Si: ≤0.2%, Fe: ≤0.4% as unavoidable impurities,
And (Si + Fe): plate thickness having a relationship of ≤0.5%:
0.16 to 0.32 mm, yield strength: 250 to 420N
On both sides of the / mm ² of the aluminum alloy plate, a thermoplastic resin coating formed by drawing and ironing a resin-coated aluminum alloy sheet for a can, the aluminum alloy plate, parallel to the tensile strength and rolling direction in the vertical direction to the rolling direction The difference from the tensile strength in the direction is 10 N / mm ² or less.
The e / Si ratio is 1.5 or less, more preferably 1 or less, the thermoplastic resin is a thermoplastic polyester resin, and both sides of the aluminum alloy plate are Is coated with the thermoplastic resin, and then a high temperature volatile lubricant is applied to both surfaces thereof.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention provides a resin-coated aluminum alloy sheet which is excellent in strength, workability and adhesion, is excellent in dry ironing and ironing workability, and is reusable and capable of realizing a unimetal can. As a result of conducting various studies in order to develop the desired resin-coated aluminum alloy sheet by defining the alloy composition, sheet thickness, yield strength, tensile strength anisotropy, type of thermoplastic resin, etc. Is. Hereinafter, the present invention will be described in detail with reference to examples.

[0006]

EXAMPLES First, the reasons for limiting the alloy components and the like of the aluminum alloy plate to be the coated substrate of the resin-coated aluminum alloy plate in the present invention will be described below. In addition,% of each alloy component is shown by weight%. In the present invention, scraps generated during the production of aluminum alloy sheets and scraps of used aluminum cans are mixed, melted, and reused in an easy manner in order to facilitate reuse. , And the alloy components of the 5182 alloy that is the lid material, especially the amounts of Mn and Mg were considered. According to JIS standard, 3004 material has Mn: 1.0 to 1.5%, Mg:
0.8-1.3%, 5182 material has Mn: 0.2-0.5
%, Mg: 2.2 to 2.8%. It is premised that the preferable range of the Mn amount of the aluminum alloy plate which is the coated substrate of the resin-coated aluminum alloy plate of the present invention is the range of (the upper limit Mn amount of the 5182 alloy to the lower limit Mn amount of the 3004 alloy). By doing this,
When the aluminum alloy used in the present invention is manufactured, the scrap mixing ratio of the 3004 alloy, which is present in a large amount, can be significantly increased. Further, the amounts of Mg and other alloy components were made as close as possible to the 5182 alloy in order to make the lid material and the can body material have the same composition.

[Mn] Mn is added because it is inexpensive and high strength can be obtained. Further, the larger the allowable amount of Mn to be added, the larger the mixing ratio of the 3004 alloy that is the can body scrap when the aluminum alloy of the present invention is melted. Then, considering the mixed use of the 3004 alloy having an Mn amount of 1.0 to 1.5%, the lower limit of the 3004 alloy of 1.0% or less was examined. By the addition of Mn, an Al-Fe-Mn-based crystallized product is formed in proportion to the addition amount, but the hard α phase which is a transformation product of the Al-Fe-Mn-based crystallized product is bent and bent back by the present invention. Not good for sex. In commercial aluminum DI processing, Al-Fe-Mn
The crystallized substances of the system have a lubricating effect during ironing and are indispensable for improving the ironing workability. However, in the present invention, since an aluminum alloy plate whose surface is coated with a resin is processed, the lubricating action of the Al-Fe-Mn-based crystallized substance is not necessary, but rather the workability is impaired. That is, the crystallized product is not suitable for the composite working method for applying the resin-coated aluminum alloy sheet of the present invention. The combined machining method is to perform redrawing and ironing at the same time using a die that has a pair of redrawing and ironing parts, and make the shoulder arm of the redrawing die smaller than several times the plate thickness. Although it is characterized in that it is used as a shoulder arm, the crystallized substance significantly impairs the bending / unbending workability of the die shoulder radius portion. That is, the surface of the aluminum alloy is easily roughened and cracked at the time of bending / unbending, and the adhesion of the coating resin film based on the roughness is lowered. In addition, the amount of crystallized substances,
Can wall breakage depending on size and processing conditions. Therefore, the upper limit of Mn content should be 0.5% in consideration of Mg content described later.
And The lower limit is not particularly limited,
From the viewpoint of workability, it is preferable that the lower limit is 0.2%, considering that the body of the can is reused and that a unimetal can is realized by sharing the can with the lid.

[Mg] Mg is an element that is more effective than Mn in improving the strength, and is added to obtain the necessary strength as a can. However, when the added amount increases, the workability decreases. In the present invention, the upper limit of the amount of Mn is 0.5% for the above reason.
However, it is not in the range where the workability is sufficient. Therefore, the range of the amount of Mg is set to 4.0 to 6.0% in order to reduce the workability and reduce the change in the workability. When the amount of Mn is in the vicinity of the upper limit of 0.5% of the present invention, Mg is
If it exceeds 6.0%, it becomes difficult to apply it to severe processing applications. On the other hand, when the amount of Mn is particularly small, the amount of Mg is 4.0
If it is less than%, the strength becomes insufficient and the economy is improved, so that it becomes impossible to reduce the plate thickness. A two-piece can obtained by molding the resin-coated aluminum alloy sheet according to the present invention using the above-described composite processing is filled with contents such as a beer, a carbonated drink, a nitrogen gas-filled drink and the like, in which the internal pressure is positive. It
Therefore, if the pressure resistance of the can bottom is insufficient, the can bottom buckles and becomes unusable as a product. The yield strength and thickness of the sheet mainly affect the pressure resistance of the can bottom. When the yield strength is low, it is necessary to increase the thickness of the sheet, but the economic efficiency is impaired. For this reason, from the viewpoint of economic efficiency, it is conceivable to use a material having a large thickness of Mn or Mg and a high strength and a thin plate thickness. Decrease. The aluminum alloy of the present invention has a larger amount of Mn and Mg than that of a general aluminum alloy for cans, and high strength can be obtained, but workability is somewhat insufficient. Therefore, it is desirable to use an application method in which the plate thickness is made thin during the plate production and the workability at the time of composite processing is lowered.

[Si] Si causes a phase transformation in an Al—Fe—Mn crystallized product to form a so-called hard α phase. This α phase is required in the production of DI cans in order to improve the ironing workability, but it is not preferable for the present invention because it lowers the bending / bending back workability more than the crystallized substances before the phase transformation. Therefore, the upper limit is set to 0.2%.

[Fe] Fe is related to Mn, and Al—Fe
-Form Mn-based crystals. As described above, the Al-Fe-Mn system is not preferable for the present invention from the viewpoint of bending and bending-back workability, and the upper limit of Fe, which is an element forming the Al-Fe-Mn system, is set to 0.1.
4%. It is preferably 0.2% or less.

The amount of [Si + Fe] (Si + Fe) is also
An upper limit is set to reduce the amount of the Fe-Mn-based crystallized product, particularly the amount of the hard α phase, to a low level. The upper limits of the amounts of Fe and Si are determined as described above.
l-Fe-Mn crystallized substances impair workability. Therefore, the upper limit is set to 0.5%, preferably 0.3% or less.

[Fe / Si ratio] The Fe / Si ratio is also Al-Fe
The Mn-based crystallized α phase is limited to a low level. Fe / Si at low levels of Fe and Si
The ratio is not particularly limited, but in the region where the values of Fe and Si are close to the upper limit of the claimed range, the Fe / Si ratio is preferably 1.5 or less, and more preferably 1 or less.

As other elements, Cu and Zn are not particularly limited, but Cu and Zn are preferably in the following ranges for the following reasons. Cu exhibits precipitation hardening due to Al-Cu-Mg-based precipitates together with Mg, and is effective from the viewpoint of strengthening, but if it increases, the workability decreases, so 0.3%
It is preferably at most 0.2%, more preferably at most 0.2%. Zn addition has the effect of properly dispersing the crystallized substances,
In order to reduce the harmful effects of the crystallized substance, it is preferable to contain 0.01 to 0.5%.

Next, the reason for limiting the plate thickness and the yield strength will be described. Both the plate thickness and the lower limit of yield strength are limited in terms of can bottom pressure resistance. Regarding the pressure resistance of the bottom of the can, there is a relation that the yield strength may be low when the plate thickness is thick, and the plate thickness may be thin when the yield strength is high. The yield strength is the alloy composition of aluminum,
It can be increased by work hardening such as rolling and the like, but if it exceeds 420 N / mm ² , workability becomes insufficient. However, even if the yield strength is 420 N / mm ² , the plate thickness must be 0.16 mm or more. On the other hand, when the yield strength is lowered, it becomes necessary to increase the thickness of the aluminum alloy plate, which is not economical. Therefore, the lower limit of the yield strength is set to 250 N / mm ² . In that case, if the plate thickness is 0.32 mm, sufficient pressure resistance of the can bottom can be obtained.

Regarding the tensile strength of the aluminum alloy sheet, the difference between the tensile strength in the direction perpendicular to the rolling direction and the tensile strength in the direction parallel to the rolling direction must be 10 N / mm ² or less. The aluminum alloy sheet used for producing the DI can is generally produced through the steps of melting-homogenizing treatment-hot rolling-cold rolling-recrystallization annealing-secondary cold rolling. The tensile strength of an aluminum alloy sheet is mainly determined by the alloy composition and the secondary cold rolling rate. The higher the secondary rolling rate, the greater the tensile strength, and the greater the difference between the tensile strength in the perpendicular direction and the tensile strength in the parallel direction. It is considered that the increase in this difference is due to an increase in the accumulation of rolling texture. Further, as the rolling rate increases, the crystallized substances extend in the rolling direction.
On the other hand, the bending / unbending workability, which is the subject of the present invention, also decreases as the rolling rate increases. It is not clear whether the decrease in bending / unbending workability is greatly affected by the development of rolling texture or the extension of crystallized substances, but the difference is 10 N / mm.
If it is ² or less, the bending / unbending workability is in a range suitable for the purpose of the present invention.

The aluminum alloy plate used in the present invention is surface-treated by a known method such as electrolytic chromic acid treatment, immersion chromic acid treatment, phosphoric acid chromic acid treatment, alkali solution, acid solution etching treatment, and anodizing treatment. The aluminum alloy plate thus prepared is more preferable. In particular, when forming a two-layer coating consisting of metallic chromium and hydrated chromium oxide on an aluminum alloy plate by electrolytic chromic acid treatment, the amount of hydrated chromium oxide is in terms of the processing adhesion of the laminated resin film. As chromium, the range of 3 to 25 mg / m ² is preferable, and the range of 7 to 20 mg / m ² is more preferable. The amount of metallic chromium is not particularly limited, but it is 1 from the viewpoint of corrosion resistance after processing and processing adhesion of the laminated resin film.
To 100 mg / m ² is preferred, and 3 to 50 mg / m ^2.
The range of m ² is more preferable.

Next, in the present invention, as the thermoplastic resin laminated on at least one surface of the aluminum alloy plate,
It is possible to use a single-layer or multi-layer resin film containing polyester resin, polyolefin resin, polyamide resin, polycarbonate resin, etc. as a main component, a resin film obtained by blending two or more of these resins, or a resin film obtained by copolymerization. it can. Particularly for drawn ironing cans subjected to severe molding processing of the present invention, polyethylene terephthalate, copolymerized polyester resin mainly composed of ethylene terephthalate repeating units, polybutylene terephthalate, polyester resin mainly composed of butylene terephthalate repeating units, or Either a polyester resin obtained by blending at least two kinds of these polyester resins, or a multilayer polyester resin obtained by laminating at least two kinds of the above polyester resins, and further, a polycarbonate resin, or at least one polyester resin and the above polyester resin It consists of a multi-layer resin obtained by laminating at least two types of polycarbonate resin and the above-mentioned polyester resin. Stretched in two directions, biaxial orientation resin film produced by heat is preferable.

The thickness of the laminated resin film is 5 to 50.
The range of μm is preferable, and the range of 10 to 30 μm is more preferable. When the thickness is 5 μm or less, it is difficult to continuously laminate a metal plate at a high speed. On the other hand, if the thickness of the laminated resin film is 50 μm or more, it is not preferable from the viewpoint of economic efficiency as compared with an epoxy resin paint widely used as a material for cans.

The resin film may be directly laminated on the aluminum alloy plate, or may be laminated by interposing a thermosetting adhesive such as epoxy-phenol resin between the resin film and the aluminum alloy plate. Laminating the resin film on the aluminum alloy plate with the thermosetting adhesive interposed by applying the thermosetting adhesive in advance on one side of the resin film or the aluminum alloy plate that adheres to each other Can be.

The resin-coated aluminum alloy sheet of the present invention comprises
It is obtained by laminating the thermoplastic resin film on the aluminum alloy plate. Lamination is performed as follows. That is, the aluminum alloy plate continuously sent out from the aluminum alloy plate supply means is heated to a temperature equal to or higher than the melting point of the thermoplastic resin film by using a heating means, and the thermoplastic resin sent out from the film supply means is provided on both sides thereof. The resin films are brought into contact with each other, superposed between a pair of laminating rolls, sandwiched and pressed, and then immediately cooled.

Finally, a high temperature volatile lubricant is applied to the upper surface of the thermoplastic resin film laminated as described above. High temperature volatile lubricant is 200 ℃ after drawing and ironing
It is desirable to scatter by 50% or more when heated for a few minutes at a moderate temperature. Specifically, liquid paraffin, synthetic paraffin, natural wax, etc. as a simple substance or a mixture thereof, processing conditions, heating after processing. Select according to the conditions. The characteristic of the applied lubricant is that the melting point is 25-80.
Those having a boiling point in the range of 180 to 400 ° C. are desirable for the purpose of the present invention. The coating amount should be determined in consideration of the outer surface of the can, the inner surface of the can, processing conditions, heating conditions after processing, etc.
/ M < ² >, preferably in the range of 30-60 mg / m < ² >.

As described above, the alloy composition of the aluminum alloy sheet, the sheet thickness, the yield strength, the difference in the tensile strength between the rolling direction and the direction perpendicular to the rolling direction, the characteristics of the thermoplastic resin, and the like are limited, and the laminated heat is further laminated. A thermoplastic resin-coated aluminum alloy plate suitable for forming a can having a thin can wall by drawing and ironing can be obtained by, for example, applying a high temperature volatile lubricant onto the plastic resin.

(Examples) Alloys having the compositions shown in Tables 1 and 2 were melted, cast, face-faced by a conventional method, homogenized at 550 ° C, heat-treated, and then hot-rolled and then cold-rolled. And the plate thickness. Then, continuous annealing was carried out by heating at 520 ° C. for 10 seconds, and then cold rolling was performed again to obtain 0.14 mm, 0.16 mm.
mm, 0.25 mm, 0.32 mm, 0.35 mm and after heating the plate temperature to 240 ° C. after etching treatment with an alkaline solution, polyethylene isophthalate 12 mol% and polyethylene terephthalate 88 on both sides.
Biaxially oriented films of copolymerized polyester resin having a thickness of 20 μm and composed of mol% were laminated and immediately immersed in water and cooled. After drying, glamor wax (boiling point 1
15 ° C.) was applied at about 50 mg / m ² to obtain a test plate. The test plate was evaluated for the strength after bending / unbending, the workability by composite processing, the pressure resistance, and the adhesion between the coated resin film after processing and the surface of the aluminum alloy plate. The strength after bending / bending back is ○ (good) when the tensile strength of the test plate subjected to bending / bending back with a bending radius of 0.5 mm is 30% or more of the strength of the test plate before processing. ), Less than 30% ×
(Poor) The evaluation of the composite workability is based on the plate pressure of the aluminum alloy plate being 0.25 mm, 0.32 mm and 0.35 mm.
The test plate was tested as follows. A squeezing can with a diameter of 100 mm molded with a squeezing ratio of 1.6 has a diameter of 75 m.
m, the can wall thickness was 80% of the original plate thickness and processed into a primary redrawing can, and the subsequent secondary redrawing workability was evaluated. In the secondary redrawing process, the redrawing ratio was 1.15 and the redrawing die shoulder arm was
It is 0.4 mm, and the clearance of the ironing die is changed to evaluate the workability at the die shoulder and ironing part by the presence or absence of can wall breakage during processing. When there is no can wall breakage,
(Good), and the case where breakage of the can wall occurred was rated as × (bad). The compressive strength is determined by molding a resin-coated aluminum alloy plate into a can with a diameter of 65 mm by ordinary drawing, dome-processing the bottom of the can, and then applying internal pressure. ○ (good) when the bending pressure is 6.3 kg / cm ² or more,
Less than 6.3 kg / cm ² was evaluated as x (poor). The adhesion is
The inner surface of the can wall after the secondary redrawing under the same conditions as above was evaluated by the presence or absence of peeling of the coating resin,
No peeling was rated as O (good), and no peeling was rated as X (bad). The evaluation results are shown in Tables 3-4.

[0024]

[Table 1] (Note) ^* PH: Difference in tensile strength between the direction perpendicular to the rolling direction and the direction parallel to the rolling direction

[0025]

[Table 2] (Note) ^* PH: Difference in tensile strength between the direction perpendicular to the rolling direction and the direction parallel to the rolling direction

[0026]

[Table 3] Results of characteristics evaluation of test plate (1) (Note) −: Not evaluated

[0027]

[Table 4] Results of characteristic evaluation of test plate (2) (Note) −: Not evaluated

[0028]

According to the present invention, Mn in weight%: ≤0.5%,
Mg: 4.0-6.0%, Si as unavoidable impurities:
≤0.2%, Fe: ≤0.4%, and (Si + F
e): Plate thickness having a relationship of ≦ 0.5%: 0.16 to 0.3
A resin-coated aluminum alloy plate for a drawn and ironing can, which is obtained by coating a thermoplastic resin on both sides of an aluminum alloy plate of 2 mm and a yield strength of 250 to 420 N / mm ² , and the aluminum alloy plate in the rolling direction of the aluminum alloy plate. The difference between the tensile strength in the vertical direction and the tensile strength in the direction parallel to the rolling direction is 10 N / m.
and characterized in that m ² or less, Fe / Si ratio is 1.
5 or less, more preferably 1 or less,
Furthermore, the thermoplastic resin is a thermoplastic polyester resin, further, after coating the thermoplastic resin on both sides of the aluminum alloy plate, a high temperature volatile lubricant is applied to both sides. When the combined process including the bending / unbending process in the die shoulder radius part of the small shoulder arm and the subsequent ironing process is carried out in a dry process, the breakage of the can wall occurs. It is possible to obtain a squeezed and ironed can that is hard to occur and has a strength required as a can. Further, Mn and Mg of the aluminum alloy plate which is the coated substrate of the resin-coated aluminum alloy plate of the present invention are close to the 5182 alloy, and are suitable for the unimetal conversion in which the can body material and the lid material are made of the same alloy material.

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B32B 7/02 101 B32B 7/02 101 15/08 15/08 F 104 7148-4F 104A 15/20 15/20 27/36 27/36 B65D 8/00 B65D 8/00 A C22C 21/06 C22C 21/06

Claims (6)

[Claims] 1. Mn: ≦ 0.5% by weight%, Mg: 4.0
~ 6.0%, Si as unavoidable impurities: ≤ 0.2%,
Fe: ≤ 0.4% and (Si + Fe): ≤ 0.5
% Of resin thickness: 0.16 to 0.32 mm, yield strength: 250 to 420 N / mm ² aluminum alloy plate coated with thermoplastic resin on both sides Alloy plate. 2. The aluminum alloy sheet according to claim 1, wherein the difference between the tensile strength in the direction perpendicular to the rolling direction and the tensile strength in the direction parallel to the rolling direction is 10 N / mm ² or less. Resin coated aluminum alloy plate for squeezing and ironing cans. 3. The resin-coated aluminum alloy plate for a drawn and ironing can according to claim 1, wherein the Fe / Si ratio is 1.5 or less. 4. The resin-coated aluminum alloy plate for a drawn and ironing can according to claim 3, wherein the Fe / Si ratio is 1 or less. 5. The resin-coated aluminum alloy plate for a drawn and ironed can according to claim 1, wherein the thermoplastic resin is a thermoplastic polyester resin. 6. The aluminum alloy sheet according to claim 1, wherein both surfaces of the aluminum alloy plate are coated with the thermoplastic resin, and then a high temperature volatile lubricant is applied to both surfaces thereof. A resin-coated aluminum alloy plate for a drawn and ironed can according to any one of the above.