WO2012036181A1 - Material for molded packages - Google Patents
Material for molded packages Download PDFInfo
- Publication number
- WO2012036181A1 WO2012036181A1 PCT/JP2011/070923 JP2011070923W WO2012036181A1 WO 2012036181 A1 WO2012036181 A1 WO 2012036181A1 JP 2011070923 W JP2011070923 W JP 2011070923W WO 2012036181 A1 WO2012036181 A1 WO 2012036181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aluminum alloy
- mass
- molded
- alloy foil
- packaging material
- Prior art date
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- 239000000463 material Substances 0.000 title claims abstract description 56
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 93
- 239000011888 foil Substances 0.000 claims abstract description 92
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 239000013078 crystal Substances 0.000 claims abstract description 27
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 239000005022 packaging material Substances 0.000 claims description 59
- 238000000034 method Methods 0.000 claims description 27
- 238000000137 annealing Methods 0.000 claims description 24
- 238000005097 cold rolling Methods 0.000 claims description 22
- 238000009512 pharmaceutical packaging Methods 0.000 claims description 18
- 238000000265 homogenisation Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000005098 hot rolling Methods 0.000 claims description 11
- 229920003002 synthetic resin Polymers 0.000 claims description 11
- 239000000057 synthetic resin Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000012793 heat-sealing layer Substances 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 description 16
- 238000000465 moulding Methods 0.000 description 14
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- 238000004806 packaging method and process Methods 0.000 description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- 238000011282 treatment Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- -1 polypropylene Polymers 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 4
- 229920006267 polyester film Polymers 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
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- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
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- 238000010295 mobile communication Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
- H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a molded packaging material, a secondary battery using the molded packaging material, a pharmaceutical packaging container, and a manufacturing method thereof.
- ⁇ ⁇ ⁇ PTP Pressure-Through Package
- a plastic film for example, a resin film such as polypropylene is used as the container.
- a resin film such as polypropylene
- a molded package material having a composite structure in which a resin film is bonded to both surfaces of an aluminum foil is used for a secondary battery exterior material in order to impart water vapor barrier properties.
- secondary batteries such as lithium ion secondary batteries (including lithium ion capacitors, the same shall apply hereinafter) have recently become smaller and lighter in electronic devices such as mobile communication devices, notebook computers, headphone stereos, and camcorders. It is useful as its driving source.
- the secondary battery has a configuration as shown in FIG. That is, a laminated body (secondary battery body) in which the positive electrode current collector 2, the positive electrode 3, the separator (separator) 4, the negative electrode 5, and the negative electrode current collector 6 are laminated in this order is formed into a molded packaging body (exterior material) 1. It is stored in. And the exterior material 1 is heat-sealed in the edge part 7 as needed.
- the molded packaging body 1 of FIG. 1 is generally laminated with a heat sealing layer 9 on one side of the exterior material body 8 and a synthetic resin film 10 on the other side. It is an aspect that is laminated.
- the molded package 1 is molded such that the central portion, which is the storage portion, becomes a concave portion and the periphery of the concave portion becomes a flat portion in order to accommodate the positive electrode current collector 2 and the like inside. Yes.
- Secondary batteries are required to have a charge capacity or high output that can withstand long-term use. Therefore, the structure of the element composed of battery electrodes, current collectors, and separators has become complicated and multi-layered, and molding under harsh conditions such as deeper recess formation is required. I came.
- a metal foil particularly an aluminum alloy foil, which is difficult to permeate moisture, air, etc., and has excellent moldability so as not to adversely affect the quality of the contents. It is used.
- the aluminum alloy foil one having a composition defined in JIS 1100, 3003, 3004, 8079 or 8021 (JIS H 4160) is used. Such an aluminum alloy foil is excellent in tensile strength and hardly breaks.
- the aluminum alloy foils have a low tensile elongation, and cracking and pinholes may occur when severely forming deep recesses. That is, when obtaining the molded packaging body 1 and the exterior material main body 8, there is no problem when the aluminum alloy foil is formed into a relatively shallow recess, but the aluminum alloy foil is used to increase the capacity of the contents. If a deep recess is formed in the center of the package, cracks and the like are likely to occur at the boundary between the recess and the flat part, moisture and air are easily transmitted, and the quality of the contents is adversely affected. . In particular, when used as a secondary battery exterior material, when moisture or air permeates, hydrofluoric acid is generated by reaction with the electrolyte inside the battery, and the inside of the battery is easily corroded.
- Patent Document 1 an aluminum foil having a thickness of 20 to 60 ⁇ m and an elongation of 0%, 45 degrees, and 90 degrees in the rolling direction is 11% or more has been proposed as an exterior material body (Patent Document 1).
- Patent Document 2 an aluminum alloy foil suitable as an exterior material body for a secondary battery can be obtained. It has been proposed (Patent Document 2).
- JP 2005-163077 A Japanese Patent Laid-Open No. 2001-176659
- the present invention has been made in view of the above circumstances, and an object thereof is to provide a molded package material having an excellent elongation value and good moldability, and a method for producing the same.
- the present inventors have found that when the composition of the aluminum alloy foil and the average crystal grain size satisfy specific conditions, 3 degrees in the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction. Regarding the mechanical properties in the direction, it was found that a molded packaging material having good moldability can be obtained by setting the average tensile strength and the average 0.2% proof stress to a specific ratio.
- an aluminum alloy foil is usually manufactured by sequentially performing processes such as casting, homogenization treatment, hot rolling, and cold rolling. Therefore, as a result of intensive studies on the conditions of each of these steps, the present inventors held at a high temperature during homogenization treatment of an aluminum alloy ingot having a specific composition, and then cooled to a low temperature. The inventors have found that a molded package material having good formability can be obtained by controlling the temperature conditions of the intermediate annealing performed before or during the rolling process, and have reached the present invention.
- Fe 0.8 to 1.7 mass%
- Si 0.05 to 0.20 mass%
- Cu 0.0025 to 0.0200 mass%
- the average crystal grain size is 20 ⁇ m or less
- the average value YS of 0.2% proof stress and the average value TS of the maximum tensile strength at 0 °, 45 ° and 90 ° with respect to the rolling direction are YS / TS ⁇ 0
- a molded packaging material comprising an aluminum alloy foil satisfying .60 is provided.
- the composition and average crystal grain size of the aluminum alloy foil satisfy specific conditions, and the average tensile strength in three directions and the average 0.2% proof stress of the aluminum alloy foil have a specific ratio. Therefore, a molded package material having good moldability can be obtained.
- the aluminum alloy foil preferably further has an average value of elongation of 20.0% or more in the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction.
- a secondary battery using the above-described molded package material is provided.
- the molded packaging material having the above-mentioned good moldability is used, deep drawing can be performed, and the outer battery is provided with a relatively thick secondary battery. It is possible to obtain an excellent secondary battery having a charging capacity that can withstand the use of time and a high output performance. Further, according to this secondary battery, since the molded packaging material of the present invention is used, non-uniform deformation hardly occurs at the time of deep drawing, cracks and pinholes do not occur at the corner of the molded body, Since it has an exterior material that makes it difficult for moisture and air from the outside to enter the molded package, it can prevent the hydrofluoric acid from being generated by the reaction with the electrolyte inside the battery and corroding the inside of the battery. It is also excellent in stability.
- a pharmaceutical packaging container using the above-described molded packaging material is provided.
- this pharmaceutical packaging container since the molded packaging material having the above-mentioned good moldability is used, deep drawing can be performed, and a deeply molded pharmaceutical packaging container can be obtained. Further, according to this pharmaceutical packaging container, since the average particle diameter of the aluminum alloy foil is small, non-uniform deformation hardly occurs at the time of deep drawing molding, and there are few cracks at the corner of the molded body, so that water vapor from the outside is not generated. It is difficult to penetrate into the molded packaging material, and it is possible to suitably package tablets or the like whose contents require water vapor barrier properties when stored. Therefore, if the pharmaceutical packaging container of the present invention is used as a PTP for pharmaceuticals, the pharmaceuticals can be stably held over a long period of time.
- a method of the above-described molded package material wherein Fe: 0.8 to 1.7 mass%, Si: 0.05 to 0.20 mass%, Cu: 0.0025 to 0.00.
- a step of homogenizing and holding an aluminum alloy ingot containing 0200 mass%, the balance being Al and inevitable impurities at 550 ° C. or more and 610 ° C. or less for 3 hours or more, and 400 to 450 ° C. or less after the homogenization holding A step of cooling to a temperature, a step of performing hot rolling and cold rolling, a step of performing an intermediate annealing to be held at 300 ° C. or higher and 450 ° C. or lower for 1 hour or longer before or during the cold rolling, and the cold And subjecting to a final annealing after rolling to obtain the above aluminum alloy foil.
- the molded packaging material obtained by this method can be deep-drawn under particularly severe conditions, can increase the content capacity, and can wrap relatively thick contents. It can be suitably used as a molding packaging material for various uses.
- the molded packaging material obtained by this method is less susceptible to non-uniform deformation during deep drawing molding, and there are few cracks at the corners of the molded product, and moisture and air from the outside penetrate into the molded packaging material. Therefore, it is possible to prevent deterioration of contents such as secondary battery parts and medicines contained in the molded package.
- the molded packaging material, secondary battery, or pharmaceutical packaging having an excellent elongation value and good moldability A container is obtained.
- the aluminum alloy ingot of a specific composition is processed by a specific process, the molded package material which has the outstanding elongation value and favorable moldability is obtained efficiently.
- a to B means A or more and B or less.
- ⁇ Aluminum alloy foil> Composition and average crystal grain size of aluminum alloy foil
- the molded package material according to the present embodiment contains Fe, Si, Cu in a specific composition, the balance is made of Al and inevitable impurities, and the average crystal grain
- An aluminum alloy foil having a diameter of 20 ⁇ m or less is provided.
- the content of Fe contained in the aluminum alloy foil is 0.8 to 1.7 mass%.
- Fe is less than 0.8 mass%, both the tensile strength and the elongation are lowered, and the moldability is lowered.
- Fe exceeds 1.7 mass% both the tensile strength and the proof stress increase, and the ratio between the tensile strength TS and the average value of the proof strength YS in the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction, YS / Since the value of TS exceeds 0.60, the moldability is lowered.
- 1.0 mass% or more and 1.6 mass% or less are more preferable from the viewpoint of the balance between strength and elongation.
- the content of Si contained in the above aluminum alloy foil is 0.05 to 0.20 mass%. If Si is less than 0.05 mass%, both the tensile strength and the elongation decrease, which is not preferable. On the other hand, when Si exceeds 0.20 mass%, the tensile strength increases, but the elongation decreases and the formability decreases. In addition, since the crystal grain size becomes large, uniform deformation during molding hardly occurs. Among these numerical values, 0.06 mass% or more and 0.10 mass% or less are particularly preferable from the viewpoint of strength and crystal grain size.
- the content of Cu contained in the aluminum alloy foil is 0.0025 to 0.0200 mass%. If the Cu content is 0.0025 mass% or less, the amount of solid solution is small, so the elongation is lowered and the formability is lowered. Moreover, when Cu exceeds 0.0200 mass%, hardening at the time of rolling will be large and it will become easy to produce the cut
- the inevitable impurities contained in the aluminum alloy foil are individually 0.05 mass% or less, and the total is 0.15 mass% or less.
- inevitable impurities such as Mn, Mg, Zn, etc. individually exceed 0.05 mass% and the total amount is 0.15 mass%, the curing during rolling is large, and breakage during rolling tends to occur. .
- the average crystal grain size after the final annealing of the aluminum alloy foil is preferably 20 ⁇ m or less.
- the average crystal grain size is preferably 18 ⁇ m or less, and particularly preferably 15 ⁇ m or less from the viewpoint of preventing uneven deformation during molding.
- it is recommended that the average value of the tensile strength TS and the proof stress YS in the 0 degree, 45 degree, and 90 degree directions with respect to the foil rolling direction is 5 ⁇ m or more from the viewpoint of satisfying YS / TS ⁇ 0.60.
- the average crystal grain size can be measured as follows. That is, first, an aluminum alloy foil was subjected to electropolishing at a voltage of 20 V using a 20 volume% perchloric acid + 80 volume% ethanol mixed solution at 5 ° C. or less, washed with water, dried, and then 50 volume% phosphoric acid at 25 ° C. or less + 47 An anodic oxide film is formed at a voltage of 20 V in a mixed solution of volume% methanol + 3 volume% hydrofluoric acid, and then polarized with an optical microscope to observe crystal grains and take a photograph. Next, from the photograph taken, the average particle diameter is measured by a cutting method.
- the cutting method is a method of counting the number of crystal grains in a predetermined line segment and using a size obtained by dividing the line segment by the number.
- the aluminum alloy foil used in the molded packaging material of the present embodiment has a composition and a crystal grain size that satisfy specific conditions. It is preferable that the average value of the tensile strength TS and the proof stress YS in the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction satisfy YS / TS ⁇ 0.60. If the value of YS / TS exceeds 0.60, the crystal grains must be refined in order to make the molded package material into a package made of an alloy foil having a thin plate thickness, such as a secondary battery exterior material.
- YS / TS is preferably 0.20 or more and 0.55 or less from the viewpoint of improving moldability.
- the aluminum alloy foil used for the molded packaging material of the present embodiment satisfies the specific conditions for the composition and crystal grain size of the aluminum alloy foil, and therefore, the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction.
- the average elongation is preferably 20.0% or more.
- the average elongation in the above three directions is 20. It is preferably 0% or more, particularly 25% or more. If it is less than 20%, cracks at the boundary between the recess and the flat portion are likely to occur.
- the upper limit is not particularly limited.
- the thickness of the aluminum alloy foil used for the molded packaging material of the present embodiment is arbitrary, and can be appropriately adjusted according to the application, molding conditions, etc., but generally 10 to 100 ⁇ m is preferable. If the thickness of the aluminum alloy foil is 10 ⁇ m or more, the tensile strength is improved. On the other hand, if the thickness is less than 10 ⁇ m, the tensile strength may decrease. On the other hand, if the thickness exceeds 100 ⁇ m, the thickness of the entire package becomes too thick and it is difficult to reduce the size of the resulting molded package, which may be undesirable.
- the thickness of the aluminum alloy foil is particularly preferably 30 to 50 ⁇ m.
- a thickness after processing is 50 ⁇ m or more, preferably 70 ⁇ m or more and 300 ⁇ m or less from the viewpoint of securing a capacity as a secondary battery molded body.
- the thickness after processing is recommended to be 30 ⁇ m or more, preferably 50 ⁇ m or more and 200 ⁇ m or less from the viewpoint of strength and moisture resistance, but these thicknesses are particularly limited. It is not something.
- the manufacturing method of the molded package material according to the present embodiment contains Fe: 0.8 to 1.7 mass%, Si: 0.05 to 0.20 mass%, Cu: 0.0025 to 0.0200 mass%, A step of homogenizing and holding an aluminum alloy ingot consisting of Al and inevitable impurities at 550 ° C. or more and 610 ° C. or less for 3 hours or more, and cooling to 400 ° C. or more and 450 ° C. or less after the homogenization holding; A step of performing hot rolling and cold rolling after the cooling, a step of performing an intermediate annealing to be held at 300 ° C. or higher and 450 ° C. or lower for 1 hour or more before or during the cold rolling, and a final step after the cold rolling And performing the annealing to obtain the aluminum alloy foil.
- the molded packaging material obtained by this method can be deep-drawn under particularly severe conditions, can increase the content capacity, and can wrap relatively thick contents. Therefore, it can be suitably used as a molding and packaging material for various applications.
- the molded packaging material obtained by this method is less susceptible to non-uniform deformation during deep drawing molding, and there are few cracks at the corners of the molded product, and moisture and air from the outside penetrate into the molded packaging material. Therefore, deterioration of the contents in the molded package material can be prevented.
- an aluminum alloy having the above composition is melted, and then an ingot is obtained by a semi-continuous casting method. Thereafter, the homogenization is cooled after holding at 550 ° C. or more and 610 ° C. or less for 3 hours or more, and is cooled to 400 ° C. or more and 450 ° C. or less as a cooling step.
- the cooling rate is preferably 20 to 50 ° C./hr. In addition, after cooling to 400 degreeC or more and 450 degrees C or less, you may hold
- the Fe-based precipitates are not sufficiently coarsened, so the yield strength is increased, and the tensile strength in the 0, 45, and 90 degrees directions with respect to the rolling direction is increased.
- the homogenization temperature exceeds 610 ° C., the ingot may be locally melted, which is not preferable in production. Moreover, since very little hydrogen gas mixed at the time of casting comes out on the surface and it becomes easy to produce a swelling on the material surface, it is not preferable.
- the homogenization temperature is preferably 580 ° C or higher and 610 ° C or lower.
- cooling is performed to 400 ° C. or more and 450 ° C. or less.
- the cooling temperature is less than 400 ° C.
- the amount of Fe-based precipitates increases too much, the crystal grains become coarse, and the elongation value decreases.
- the cooling temperature exceeds 450 ° C.
- the solid solution amount of Fe increases, so the yield strength increases, and the average value of the tensile strength TS and the yield strength YS in the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction
- the ratio of YS / TS exceeds 0.60, and the elongation value decreases and the moldability decreases.
- hot rolling is performed after the homogenization and cooling are completed.
- the end temperature of hot rolling is preferably 250 to 400 ° C. From the viewpoint that it is necessary to recrystallize the aluminum alloy sheet after hot rolling more reliably, it is recommended that the temperature is preferably 300 ° C. or higher.
- the manufacturing method of the present invention performs cold rolling after the hot rolling.
- This cold rolling can be performed by a known method and is not particularly limited.
- the intermediate annealing is necessary to perform intermediate annealing at 300 ° C. or more and 450 ° C. or less for 1 hour or more before or during the cold rolling.
- the intermediate annealing temperature is less than 300 ° C.
- the elongation value decreases.
- the temperature of the intermediate annealing exceeds 450 ° C.
- the value of YS / TS exceeds 0.60.
- the intermediate annealing is preferably performed at a temperature of 300 ° C. or more and 400 ° C. or less from the viewpoint of reducing the yield strength by reducing the amount of Fe solid solution.
- the holding temperature for the final annealing is preferably 200 to 400 ° C. for 5 hours or longer from the viewpoint of completely volatilizing the rolling oil while completely recrystallizing. If it is less than 200 degreeC, it may be difficult to obtain perfect soft foil. Further, when the temperature exceeds 400 ° C., the amount of solid solution of Fe increases and the yield strength increases, so the ratio between the tensile strength TS and the average value of the yield strength YS in the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction.
- the value of YS / TS exceeds 0.60, which is not preferable because the elongation value decreases and the moldability may decrease.
- a more preferable final annealing temperature is 240 ° C. or higher and 320 ° C. or lower. If the holding time of the final annealing is less than 5 hours, the rolling oil at the time of foil rolling is not sufficiently volatilized, so that the wettability of the foil surface is lowered and the adhesiveness with the laminate resin is likely to be lowered. Furthermore, it is desirable that the temperature increase rate during the final annealing is 50 ° C./hr or less. When the rate of temperature rise exceeds 50 ° C./hr, coarse particles are likely to be generated, and non-uniform deformation is likely to occur during molding, which may reduce moldability.
- the molded package material of the present invention may be composed of a single layer of aluminum alloy foil or a plurality of layers including the above-described eight layers of aluminum alloy foil, and is not particularly limited. It is necessary to provide at least an aluminum alloy foil as a constituent element. Specifically, as illustrated in FIG. 2, an example in which a synthetic resin film 10, an aluminum alloy foil 8, and a heat sealing layer 9 are laminated in this order can be exemplified.
- the synthetic resin film 10 is used to further improve the moldability of the molded packaging material, to protect the aluminum alloy foil 8 that is the main material of the packaging body, or to enable printing. Are laminated and attached to one side.
- a polyester film, a nylon film, or the like is used as such a synthetic resin film 10.
- the molded packaging material of the present invention can be used as a secondary battery or a pharmaceutical packaging container.
- the molded packaging material of the present invention is used for a secondary battery exterior material. Can do.
- a heat-resistant polyester film as the synthetic resin film 10.
- the heat sealing layer 9 is for sealing the end 7 of the package.
- a conventionally known heat-sealable synthetic resin can be used.
- any material can be used as long as it has excellent adhesion to the aluminum alloy foil 8 used in the present invention and can protect the contents.
- an unstretched polypropylene film, a biaxially stretched polypropylene film, and a maleic acid-modified polyolefin can be used. It is preferable to use it.
- the synthetic resin film 10, the aluminum alloy foil 8 used in the present invention, and the heat sealing layer 9 may be laminated in this order.
- the suitability of the contents is satisfied.
- An adhesive can be applied, and a synthetic resin film can be placed thereon for pasting.
- the pressure bonding between the aluminum alloy foil and the polypropylene film is generally performed under heating.
- the heating condition is about 160 to 240 ° C.
- the pressure bonding conditions are a pressure of 0.5 to 2 kg / cm 2 and a time of about 0.5 to 3 seconds.
- the adhesive for the synthetic resin film 10 conventionally known ones are used, for example, urethane adhesives.
- the molded packaging material of the present invention can be molded by a known method, and the molding method is not particularly limited, but can be suitably used particularly for deep drawing.
- a packaging material obtained by cutting the molded package material into a desired size to obtain a desired shape is obtained.
- the packaging material is deep-drawn so that the central portion becomes a concave portion and the peripheral portion becomes a flat portion, and the heat sealing layer side becomes an inner surface.
- the concave portions are opposed to each other, and the heat sealing layers in the peripheral portion are bonded to each other to be bonded.
- a secondary battery is manufactured by storing the positive electrode current collector 2, the positive electrode 3, the separator 4, the negative electrode 5, and the negative electrode current collector 6 in the center and further impregnating with an electrolyte.
- the lead wire extending from the secondary battery body can be taken out to the outside, and the bag mouth can be heat-sealed again.
- the secondary battery of the present invention since the molded packaging material provided with the aluminum alloy foil having the above-mentioned good formability is used, it has an excellent elongation rate and is more harsh such as making the recess deeper than before. Under such conditions, deep drawing can be favorably formed, and a secondary battery exterior material having a large capacity can be formed. Therefore, a secondary battery having a charge capacity or high output that can withstand long-time use can be obtained.
- the exterior material is unlikely to be deformed unevenly during deep drawing, and cracks and breakage at the corners of the molded body are also suppressed. It suppresses moisture and air intrusion and can prevent deterioration of battery contents as much as possible.
- the above-described method can be adopted as a molding method even when a pharmaceutical packaging container is obtained using the molded packaging material of the present invention.
- medicines tablettes, etc.
- the pharmaceutical packaging container of the present invention can be produced by a known method, and the production method is not particularly limited.
- the pharmaceutical packaging container since the aluminum alloy molded packaging material having a high elongation rate and good formability is used, the pharmaceutical packaging container can be deep-drawn and the molded packaging material can be reduced. Can be obtained. Further, according to this pharmaceutical packaging container, since the average crystal grain size of the aluminum alloy foil is small, non-uniform deformation hardly occurs at the time of deep drawing, and there are few cracks at the corners of the molded body, so that water vapor from the outside However, it is difficult to penetrate into the molded packaging material, and it is excellent in long-term quality controllability such as tablets of contents that require a water vapor barrier property during storage.
- the molded package material for the secondary battery or the pharmaceutical packaging is used, but the material is not particularly limited and may be used for other packaging applications.
- it can also be used as a molded battery material for primary batteries, not secondary batteries. In this way, even in a primary battery that requires high durability used under severe conditions, non-uniform deformation is unlikely to occur during deep drawing, and cracks and breakage at the corners of the molded body are also suppressed. Therefore, it is possible to suppress moisture and air intrusion from the outside in the case of a battery and prevent deterioration of the battery contents as much as possible.
- Example 1 An aluminum ingot having the composition shown in Table 1 was prepared, and subjected to homogenization treatment, cooling, hot rolling, cold rolling, foil rolling and final annealing according to a conventional method to obtain an aluminum alloy foil having a thickness of 35 ⁇ m. Obtained. The obtained aluminum alloy foil was measured for tensile strength, 0.2% proof stress and elongation at 0 °, 45 ° and 90 ° with respect to the rolling direction, and the results are shown in Table 2. Table 2 also shows the number of rolling breaks during cold rolling.
- the tensile strength of the aluminum alloy foil was a strip-shaped sample piece having a width of 10 mm, a distance between chucks of 50 mm, and a tensile speed of 10 mm / min.
- the maximum load applied to the strip-shaped sample piece was measured at a speed of 1 mm, and the stress divided by the cross-sectional area of the original sample was calculated as the tensile strength.
- the 0.2% proof stress is the point where a parallel line is drawn from the value of permanent strain of 0.2% from this straight line in the elastic region indicated by the straight line at the initial rise of the load-elongation curve diagram, and intersects with the above curve. That is, the value of the point corresponding to the yield point of the steel material or the like was obtained.
- the elongation is [(L-50) / 50] ⁇ 100, where L (mm) is the distance between chucks when the strip-shaped sample piece is broken by the same measurement method as in the case of tensile strength. It is calculated.
- a heat-resistant polyester film having a thickness of 12 ⁇ m was attached to the other surface of the aluminum alloy foil (the surface on which the extruded film was not attached) via a urethane adhesive to obtain a molded packaging material.
- An Erichsen test was performed on the molded packaging material, and the degree of deformability of the molded packaging material was measured. The results are shown in Table 2. The Erichsen test was conducted by a method based on the method described in JIS Z 2247 with the heat-resistant polyester film surface as the overhanging surface. The larger the Eriksen value, the greater the deformability.
- each aluminum alloy foil shown in this example and the comparative example was measured as follows. That is, each aluminum alloy foil obtained was electropolished at a voltage of 20 V using a 20 volume% perchloric acid + 80 volume% ethanol mixed solution of 5 ° C. or less, washed with water, dried, and then cooled to 50 ° C. of 25 ° C. or less. An anodized film was formed at a voltage of 20 V in a mixed solution of volume% phosphoric acid + 47 volume% methanol + 3 volume% hydrofluoric acid, and then polarized with an optical microscope, the crystal grains were observed and photographed. . From the photograph taken, the average particle diameter was measured by a cutting method. In the cutting method, the number of crystal grains in a certain line segment was counted, and the size obtained by dividing the line segment by the number is shown in Table 2.
- the aluminum alloy foils according to Examples 1 to 18 have a large elongation and a large so-called deformability that can cope with severe forming compared to the aluminum alloy foils according to Comparative Examples 19 to 25. It is shown that.
- the molded packaging material obtained using the aluminum alloy foils according to Examples 1 to 18 has a large Erichsen value and a large deformability compared to those according to Comparative Examples 19 to 25. Yes. Therefore, the molded packaging material obtained by using the aluminum alloy foils according to Examples 1 to 18 has a large elongation, can be well-drawn, and is suitable for packaging a relatively thick content. I understand that In addition, the aluminum alloy foils according to Examples 1 to 18 are easy to manufacture with almost no rolling break during cold rolling.
- Example 2 An aluminum ingot having the elemental composition shown in Table 3 was prepared, and subjected to homogenization, cooling, and hot rolling to obtain an aluminum plate having a thickness of 2.4 mm.
- the aluminum plate was cold-rolled, the plate thickness was 0.55 mm, and after intermediate annealing was performed under the conditions of holding temperature and holding time shown in Table 3, cold-rolling was further performed to obtain 35 ⁇ m.
- An aluminum alloy foil was obtained. And final annealing was performed on each conditions of the holding temperature and holding time which were shown in Table 3, and the temperature increase rate, and aluminum alloy foil was obtained.
- the obtained aluminum alloy foil was subjected to various evaluations in the same manner as in Example 1.
- Table 4 shows the tensile strength, 0.2% proof stress, elongation, crystal grain size, Erichsen value, and number of rolling breaks. .
- the aluminum alloy foils according to Examples 1 to 18 have a larger elongation and a higher deformability than the aluminum alloy foils 19 to 37 according to the comparative examples. Further, the molded packaging material obtained using the aluminum alloy foils according to Examples 1 to 18 has a large Erichsen value and a large deformability compared to those according to Comparative Examples 19 to 37. Yes. Therefore, the molded packaging material obtained using the aluminum alloy foils according to Examples 1 to 18 can be satisfactorily formed by deep drawing and is suitable for packaging a relatively thick content. I understand. In addition, the aluminum alloy foils according to Examples 1 to 18 are easy to manufacture with almost no rolling break during cold rolling.
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Abstract
Description
(1)アルミニウム合金箔の組成および平均結晶粒径
本実施形態に係る成形包装体材料は、Fe、Si、Cuを特定の組成で含有し、残部がAl及び不可避的不純物からなり、平均結晶粒径が20μm以下であるアルミニウム合金箔を備える。 <Aluminum alloy foil>
(1) Composition and average crystal grain size of aluminum alloy foil The molded package material according to the present embodiment contains Fe, Si, Cu in a specific composition, the balance is made of Al and inevitable impurities, and the average crystal grain An aluminum alloy foil having a diameter of 20 μm or less is provided.
本実施形態の成形包装体材料に用いられるアルミニウム合金箔は、上述したように、アルミニウム合金箔の組成と結晶粒径が特定の条件を満たすため、アルミニウム合金の箔圧延方向に対する0度、45度、90度方向の引張強さTSと耐力YSの平均値が、YS/TS≦0.60を満たすことが好ましい。上記YS/TSの値が0.60を超えると、成形包装体材料を二次電池用外装材のように、板厚が薄い合金箔による包装体とするには、結晶粒を微細化することで、引張強さ、耐力は大きく増加するものの、加工硬化性の増加が少なく、伸び値は低下し、成形性が低下する場合がある。上記YS/TSの値は好ましくは、0.20以上、0.55以下が成形性向上の観点から推奨される。 (2) Physical Properties of Aluminum Alloy Foil As described above, the aluminum alloy foil used in the molded packaging material of the present embodiment has a composition and a crystal grain size that satisfy specific conditions. It is preferable that the average value of the tensile strength TS and the proof stress YS in the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction satisfy YS / TS ≦ 0.60. If the value of YS / TS exceeds 0.60, the crystal grains must be refined in order to make the molded package material into a package made of an alloy foil having a thin plate thickness, such as a secondary battery exterior material. However, although tensile strength and proof stress are greatly increased, there is little increase in work-curing property, elongation value is decreased, and moldability may be decreased. The value of YS / TS is preferably 0.20 or more and 0.55 or less from the viewpoint of improving moldability.
本実施形態に係る成形包装体材料の製造方法は、Fe:0.8~1.7mass%、Si:0.05~0.20mass%、Cu:0.0025~0.0200mass%を含有し、残部がAl及び不可避的不純物から成るアルミニウム合金鋳塊を、550℃以上610℃以下で3時間以上の均質化保持する工程と、該均質化保持後に400℃以上450℃以下まで冷却する工程と、該冷却後に熱間圧延および冷間圧延を施す工程と、該冷間圧延の前あるいは途中で、300℃以上450℃以下で1時間以上保持する中間焼鈍を施す工程と、該冷間圧延後に最終焼鈍を実施して前記アルミニウム合金箔を得る工程と、を含む。 <Method for producing aluminum alloy foil>
The manufacturing method of the molded package material according to the present embodiment contains Fe: 0.8 to 1.7 mass%, Si: 0.05 to 0.20 mass%, Cu: 0.0025 to 0.0200 mass%, A step of homogenizing and holding an aluminum alloy ingot consisting of Al and inevitable impurities at 550 ° C. or more and 610 ° C. or less for 3 hours or more, and cooling to 400 ° C. or more and 450 ° C. or less after the homogenization holding; A step of performing hot rolling and cold rolling after the cooling, a step of performing an intermediate annealing to be held at 300 ° C. or higher and 450 ° C. or lower for 1 hour or more before or during the cold rolling, and a final step after the cold rolling And performing the annealing to obtain the aluminum alloy foil.
上記の成形包装体材料に用いる良好な成形性を有したアルミニウム合金箔を得るためには、まず、上記の組成を有するアルミニウム合金を溶解後、半連続鋳造法により鋳塊を得る。その後、均質化処理は550℃以上610℃以下で3時間以上の保持後冷却し、冷却工程として400℃以上450℃以下まで冷却する。冷却速度は、20~50℃/hrが好ましい。なお、400℃以上450℃以下まで冷却後、この温度範囲でさらに数時間の保持をしても良い。 Hereinafter, the method for producing the molded packaging material will be described more specifically.
In order to obtain an aluminum alloy foil having good formability for use in the above-described molded package material, first, an aluminum alloy having the above composition is melted, and then an ingot is obtained by a semi-continuous casting method. Thereafter, the homogenization is cooled after holding at 550 ° C. or more and 610 ° C. or less for 3 hours or more, and is cooled to 400 ° C. or more and 450 ° C. or less as a cooling step. The cooling rate is preferably 20 to 50 ° C./hr. In addition, after cooling to 400 degreeC or more and 450 degrees C or less, you may hold | maintain several hours in this temperature range.
本発明の成形包装体材料は、アルミニウム合金箔単体又は上記したアルミニウム合金箔8層を含む複数層からなるものであってもよく、特に制限されるものではないが、複数層とする場合には、少なくとも構成要素としてアルミニウム合金箔を構成として備えていることが必要である。具体的には、図2に示されるように、合成樹脂製フィルム10、アルミニウム合金箔8、熱封緘層9の順に積層されてなるものを例示することができる。合成樹脂製フィルム10は、成形包装体材料の成形性をより高めるため、或いは包装体の本体主要材料であるアルミニウム合金箔8を保護するため、或いは印刷を可能ならしめるために、アルミニウム合金箔8の片面に積層貼着されるものである。このような合成樹脂製フィルム10としては、ポリエステルフィルムやナイロンフィルム等が用いられる。本発明の成形包装体材料は、二次電池や医薬品包装容器として用いることができ、特に、二次電池とする場合には、本発明の成形包装体材料を二次電池外装材用として用いることができる。この場合は外装材内に収容する種々の電池部材の発熱や放熱処理等を行う必要があることから、合成樹脂製フィルム10としては耐熱性ポリエステルフィルムを用いるのが好ましい。 <Molded packaging material>
The molded package material of the present invention may be composed of a single layer of aluminum alloy foil or a plurality of layers including the above-described eight layers of aluminum alloy foil, and is not particularly limited. It is necessary to provide at least an aluminum alloy foil as a constituent element. Specifically, as illustrated in FIG. 2, an example in which a
表1に示した組成を持つアルミニウム鋳塊を準備し、常法に従って、均質化処理、冷却、熱間圧延、冷間圧延、箔圧延及び最終焼鈍を施して、厚さ35μmのアルミニウム合金箔を得た。得られたアルミニウム合金箔の圧延方向に対する0度、45度、90度における引張強さ、0.2%耐力及び伸びを測定し、その結果を表2に示した。また、冷間圧延中に圧延切れが生じた場合、その回数も表2に示した。 <Example 1>
An aluminum ingot having the composition shown in Table 1 was prepared, and subjected to homogenization treatment, cooling, hot rolling, cold rolling, foil rolling and final annealing according to a conventional method to obtain an aluminum alloy foil having a thickness of 35 μm. Obtained. The obtained aluminum alloy foil was measured for tensile strength, 0.2% proof stress and elongation at 0 °, 45 ° and 90 ° with respect to the rolling direction, and the results are shown in Table 2. Table 2 also shows the number of rolling breaks during cold rolling.
表3に示す元素組成を持つアルミニウム鋳塊を準備し、均質化処理、冷却、熱間圧延を施して、厚さ2.4mmのアルミニウム板を得た。このアルミニウム板に冷間圧延を施して、板厚が0.55mmで、表3に示す保持温度及び保持時間の各条件で中間焼鈍を施した後、さらに、冷間圧延を施して、35μmのアルミニウム合金箔を得た。そして、表3に示す保持温度及び保持時間、昇温速度の各条件で最終焼鈍を施し、アルミニウム合金箔を得た。得られたアルミニウム合金箔には、実施例1と同等の方法で各種評価を行い、引張強さ、0.2%耐力、伸び、結晶粒径、エリクセン値、圧延切れ回数を表4に示した。 <Example 2>
An aluminum ingot having the elemental composition shown in Table 3 was prepared, and subjected to homogenization, cooling, and hot rolling to obtain an aluminum plate having a thickness of 2.4 mm. The aluminum plate was cold-rolled, the plate thickness was 0.55 mm, and after intermediate annealing was performed under the conditions of holding temperature and holding time shown in Table 3, cold-rolling was further performed to obtain 35 μm. An aluminum alloy foil was obtained. And final annealing was performed on each conditions of the holding temperature and holding time which were shown in Table 3, and the temperature increase rate, and aluminum alloy foil was obtained. The obtained aluminum alloy foil was subjected to various evaluations in the same manner as in Example 1. Table 4 shows the tensile strength, 0.2% proof stress, elongation, crystal grain size, Erichsen value, and number of rolling breaks. .
2 正極集電体
3 正極
4 隔離材(セパレーター)
5 負極
6 負極集電体
7 外装材の端部
8 外装材本体(アルミニウム合金箔)
9 熱封緘層
10 合成樹脂製フィルム 1 Exterior material (molded packaging material)
2 Positive current collector 3 Positive electrode 4 Separator (separator)
5
9
Claims (8)
- Fe:0.8~1.7mass%、Si:0.05~0.20mass%、Cu:0.0025~0.0200mass%を含有し、残部がAl及び不可避的不純物からなり、平均結晶粒径が20μm以下であり、圧延方向に対する0度、45度、90度における0.2%耐力の平均値YSと最大引張強さの平均値TSがYS/TS≦0.60を満たすアルミニウム合金箔を備える成形包装体材料。 Fe: 0.8 to 1.7 mass%, Si: 0.05 to 0.20 mass%, Cu: 0.0025 to 0.0200 mass%, the balance is made of Al and inevitable impurities, and the average crystal grain size Is an aluminum alloy foil satisfying YS / TS ≦ 0.60 with an average value YS of 0.2% proof stress and an average value TS of maximum tensile strength at 0 °, 45 ° and 90 ° with respect to the rolling direction. Molded packaging material provided.
- 前記アルミニウム合金箔が、Fe:0.8~1.7mass%、Si:0.05~0.20mass%、Cu:0.0025~0.0200mass%を含有し、残部がAl及び不可避的不純物から成るアルミニウム合金鋳塊を、550℃以上610℃以下で3時間以上の均質化保持後、さらに400℃以上450℃以下まで冷却し、その後熱間圧延および冷間圧延を施し、該冷間圧延の前あるいは途中で、300℃以上450℃以下で1時間以上保持する中間焼鈍を施し、冷間圧延後に最終焼鈍を施して得られる、請求項1に記載の成形包装体材料。 The aluminum alloy foil contains Fe: 0.8 to 1.7 mass%, Si: 0.05 to 0.20 mass%, Cu: 0.0025 to 0.0200 mass%, and the balance is made of Al and inevitable impurities. The aluminum alloy ingot is homogenized and maintained at 550 ° C. or more and 610 ° C. or less for 3 hours or more, and further cooled to 400 ° C. or more and 450 ° C. or less, and then subjected to hot rolling and cold rolling. The molded packaging material according to claim 1, which is obtained by performing intermediate annealing that is held at 300 ° C. or higher and 450 ° C. or lower for 1 hour or longer before and during the course, and then performing final annealing after cold rolling.
- 前記アルミニウム合金箔が、圧延方向に対する0度、45度、90度方向における伸びの平均値が20.0%以上である、請求項1又は2に記載の成形包装体材料。 The molded package material according to claim 1 or 2, wherein the aluminum alloy foil has an average value of elongation of 20.0% or more in the 0 degree, 45 degree, and 90 degree directions with respect to the rolling direction.
- 前記アルミニウム合金箔の一方の側に積層されてなる合成樹脂製フィルムと、
前記アルミニウム合金箔の他方の側に積層されてなる熱封緘層と、
をさらに備える、請求項1~3のいずれかに記載の成形包装体材料。 A synthetic resin film laminated on one side of the aluminum alloy foil;
A heat sealing layer laminated on the other side of the aluminum alloy foil;
The molded package material according to any one of claims 1 to 3, further comprising: - 医薬品包装又は二次電池外装に用いる、請求項1~4のいずれかに記載の成形包装体材料。 The molded packaging material according to any one of claims 1 to 4, which is used for pharmaceutical packaging or secondary battery exterior.
- 請求項1~5のいずれかに記載の成形包装体材料を用いる二次電池。 A secondary battery using the molded packaging material according to any one of claims 1 to 5.
- 請求項1~5のいずれかに記載の成形包装体材料を用いる医薬品包装容器。 A pharmaceutical packaging container using the molded packaging material according to any one of claims 1 to 5.
- 請求項1~5のいずれかに記載の成形包装体材料の製造方法であって、
Fe:0.8~1.7mass%、Si:0.05~0.20mass%、Cu:0.0025~0.0200mass%を含有し、残部がAl及び不可避的不純物から成るアルミニウム合金鋳塊を、550℃以上610℃以下で3時間以上の均質化保持する工程と、
該均質化保持後に400℃以上450℃以下まで冷却する工程と、
該冷却後に熱間圧延および冷間圧延を施す工程と、
該冷間圧延の前あるいは途中で、300℃以上450℃以下で1時間以上保持する中間焼鈍を施す工程と、
該冷間圧延後に最終焼鈍を実施して前記アルミニウム合金箔を得る工程と、
を含む、方法。 A method for producing a molded package material according to any one of claims 1 to 5,
An aluminum alloy ingot containing Fe: 0.8 to 1.7 mass%, Si: 0.05 to 0.20 mass%, Cu: 0.0025 to 0.0200 mass%, and the balance consisting of Al and inevitable impurities A step of maintaining homogenization at 550 ° C. or more and 610 ° C. or less for 3 hours or more;
Cooling to 400 ° C. or more and 450 ° C. or less after the homogenization holding;
A step of performing hot rolling and cold rolling after the cooling;
Before or during the cold rolling, performing an intermediate annealing that is held at 300 ° C. or higher and 450 ° C. or lower for 1 hour or longer;
Performing the final annealing after the cold rolling to obtain the aluminum alloy foil;
Including a method.
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Also Published As
Publication number | Publication date |
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CN103140592B (en) | 2015-07-15 |
JPWO2012036181A1 (en) | 2014-02-03 |
KR20140001839A (en) | 2014-01-07 |
TW201217545A (en) | 2012-05-01 |
TWI444482B (en) | 2014-07-11 |
CN103140592A (en) | 2013-06-05 |
KR101842689B1 (en) | 2018-03-27 |
JP5841537B2 (en) | 2016-01-13 |
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