CN102329985B - Aluminum foil for flexible package of polymer lithium ion battery - Google Patents
Aluminum foil for flexible package of polymer lithium ion battery Download PDFInfo
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Abstract
The invention which provides an aluminum foil for the flexible package of a polymer lithium ion battery aims at providing an aluminum foil which has a tensile strength, an elongation rate and a cupping value higher than indexes in the prior art, can synchronously extend and flow with other composite materials, and allows the punching depth of a flexible package material plastic-aluminum composite membrane for the polymer lithium ion battery to be satisfied. The aluminum foil is formed with the following technical scheme: the aluminum foil comprises 0.09-0.9 wt% of silicon Si, 0.6-1.5 wt% of iron Fe, 0.006-0.10 wt% of copper Cu, 0.03-0.05 wt% of manganese Mn, and the balance aluminum Al at least, and the sum of contents of other metals and alloys is not greater than 0.05-0.15 wt%. The tensile strength, the elongation rate and the cupping value of the aluminum foil formed in the invention are greater than 98MPa, greater than 21%, and equal to or greater than 6.10 respectively; and the aluminum foil which can realize the synchronous extension and flow by compositing with other materials allows the punching depth of the flexible package material plastic-aluminum composite membrane for the polymer to be 3-15mm.
Description
Technical field
The present invention relates to a kind of aluminium foil that is mainly used in polymer Li-ion battery flexible packing material aluminum-plastic composite membrane used, can think that the present invention has the aluminium foil of purposes widely for fields such as packing, electric and buildings in can also daily life.
In prior art, aluminium foil relates to founding, hot rolling, be cold rolled to paper tinsel rolls, be production process at most, one of the aluminium product of processing technology difficulty maximum.Polymer Li-ion finished product battery is to be exposed in the atmospheric environment of certain humidity, and the moisture of air has to wrapping material the effect of seeing through.Because lithium-ions battery is very harsh to the requirement of non-water condition, moisture can directly affect battery cycle life, so the barrier property of each composite bed of wrapping material is very important.And the key that plays iris action in layers of material is aluminium foil.Due to the little pin hole that oxygen and water vapour inevitably will occur transmitting to a certain extent of aluminum foil thickness.Therefore, high, medium and low temperature phase transformation in the organizational controls of the performance of the alloy system of aluminum foil material and alloy phase, aluminium foil, the production technique of aluminium foil, aluminium foil, aluminum foil material, chemical composition be the impact on the aluminium foil performance on the impact of aluminium foil tissue and performance, processing parameter, all can have influence on the Forming Quality of aluminium foil packing.In particular for the aluminium foil layer of polymer Li-ion battery flexible packing material, the general requirement aluminum-plastic composite membrane must have high barrier: the transit dose of water vapour must be less than 1 * 10
-4g/m
2d.1atm; The oxygen transit dose must be less than 0.1cm
3/ m
2d.1atm.This requires than the high 10000 times of left and right of the barrier of conventional aluminium plastic composite materials.The water vapour permeability cm of normal aluminium foil
3/ (m
224h0.1Mpa) cm
3/ (m
224h0.1Mpa), therefore generally need to adopt thicker aluminium foil, and need to adopt the composite structure of 5～7 layers and even 12 layers.Usually the thickness that the aluminum foil thickness of flexible packing material is greater than 40 μ m just can be avoided the slow infiltration of water vapour.In general, the foil moulding degree of depth that 40 μ m are thick is no more than 4mm, and after moulding, the thickness of aluminium foil can not be less than 30 μ m, so common matrix material is difficult to reach requirement.
The aluminum foil material packaging means of polymer Li-ion battery generally has two kinds of formed package and non-formed packages.Box-packaged formed package mode is that wrapping material are washed into to the boxlike shape.Due in moulding process, aluminium foil and other matrix materials must have synchronous extension, mobile performance, and aluminium foil can attenuation in the process of extending.This just requires the stripping strength of different composite layer higher, just can avoid delamination in moulding process.Non-formed package mode is because material does not extend, thus relatively low to the thickness requirement of ductility and aluminium foil, but non-moulding must be in 120u.
On barrier, the relation before and after the cold stamping shaped degree of depth of the cold stamping shaped flexible packing material of difficulty maximum, aluminium foil elongation and cold stamping between the aluminum foil thickness variation, be 3-12mm to the cold stamping shaped property requirement cold stamping degree of depth; Do not allow layering, break, the pin hole light leak; Shape-holding property, degree of deformation a<50.Wherein some index can quantitative description, can detect by suitable method, and what have but can not detect by advanced method.Some requirement can only qualitative description, can not find suitable method and detects.Therefore also do not form international standard, the domestic producer furtherd investigate is very little, does not more have standard to follow.At present aluminium foil the outermost layer nylon BOPA of multi-layer co-extruded PP, PE or CPP and aluminium foil or PET compound after, be difficult to reach the above-mentioned cold stamping degree of depth and be 3-12mm or more than.
Aluminium foil or the common chemical composition content of aluminium plate mainly contain at present:
According to the mechanical property of new standard (GB/T 13198-2003) aluminium foil 8001 series of aluminium and aluminium foil, the tensile strength RM/ (Nmm of the aluminium foil of 0.14～0.2mm thickness of O state
2) 60～115, elongation A/% is not less than 14.
In prior art, it is 0.02mm that the packing of aluminium foil mostly adopts thickness, state is H18 8 * * * serial aluminium foil.8 * * * serial aluminium foil serial chemical composition silicon Si:0.40 commonly used, copper Cu:1.2～2.0, magnesium Mg:2.1～2.9, zinc Zn:5.1～6.1, manganese Mn :≤0.30.8011 alloy aluminium foil low cross-intensities of available technology adopting, only reach 168NPmm
2, unit elongation only reaches>and 4, Erichsen number 2～3.Work in-process, aluminium foil spar (bright spot) appears at luminous point inhomogeneous on the aluminium foil dark face while being the pairing rolling.It not only affects attractive in appearance, and can cause the mechanical properties decrease of aluminium foil.Spar is distributed in the dark face of aluminium foil, general ovalize, the disperse of being rectangle individually distributes, sometimes on whole aluminium foil surface or local distribution, two paper tinsels up and down of pairing are one-to-one relationship, the color of spar is darker and shinny than the basic colors of aluminium, during especially severe, can form pin hole.In the process of normal rolling, roller surface does not directly contact with the surface of aluminium foil, and rolling load is transmitted by the rolling oil film.Angle from the shaping tribology of metal, between two contact surfaces of roll and aluminium foil, by liquid lubricant, separated fully, the friction produced in the aluminium foil forming process is fluid friction, once, if the oil film that this one deck liquid lubricant forms in the operation of rolling is local destroyed, just form mixed friction (being formed by fluid friction, metal to-metal contact, boundary friction).Metal to-metal contact and boundary friction usually can cause the shaping of rolling workpiece abnormal, and namely compacting pressure is not passed through oil film, but directly contacts and be delivered on rolling workpiece by local point, forms so-called " spar ".And fluid friction partly belongs to normal profiled surface, can not affect spar, the reason that Here it is spar generation and disperse distribute.The heterogeneity of gloss level of roll or pairing footpath are poor too large, it is also the very important reason that produces spar, when the up-down rollers roughness heterogeneity of roll, cause the rubbing factor of levels aluminium foil and upper working rolls and lower working rolls different, because the rotating speed of roll is synchronous, causes between two-layer aluminium foil and produce the relative changing of the relative positions.Circular frequency due to upper working rolls and lower working rolls is identical equally, and the difference in roller footpath makes its linear velocity different, makes between two-layer aluminium foil also to produce along with the rotation of working roll relatively sliding when the pairing rolling.When the thickness difference of two aluminium foils is larger, due to flowing of metal, the working modulus of upper and lower two aluminium foils is inconsistent, makes the mobile asynchronous of metal, and two aluminium foils easily produce the changing of the relative positions, the generation spar.Work in-process, due to the oiling of closing volume very little or the oiling inequality, make the became uneven of two-layer aluminium foil oil film in the operation of rolling, or some areas do not have oil film, cause between two-layer aluminium foil and form metal to-metal contact or boundary friction.
Summary of the invention
Task of the present invention is to propose a kind of tensile strength, unit elongation and Erichsen number higher than the prior art index, can synchronously extend with other matrix material, flow, and can meet the aluminium foil of the deep degree of polymer Li-ion battery aluminum-plastic composite membrane flexible packing material punching used.
Above-mentioned purpose of the present invention can be achieved by following technique measures, a kind of aluminum foil for flexible package of polymer lithium ion battery, at least contain silicon Si, iron Fe, copper Cu, manganese Mn and aluminium Al, wherein silicon Si:0.09wt%～0.9wt%, iron Fe:0.6wt%～1.5wt%, copper Cu:0.006wt%～0.10wt%, manganese Mn:0.03wt%～0.05wt%, aluminium Al are surplus, and other adds alloy micronutrient levels total and is not more than 0.05wt%～0.15wt%.
The present invention has the following effect of having a mind to than prior art.
In the composition of above-mentioned aluminium foil, if better with add<boron of titanium Ti 0.0005 crystal grain thinning simultaneously.Add a small amount of copper Cu, copper Cu dissolves in αsolidsolution, can improve intensity.Add a small amount of Mn or magnesium Mg<0.03% can eliminate the harmful effect of iron Fe, silicon Si.Copper Cu, Mn, Mg solid solution will reduce the amount of separating out of Fe, Si in the Al matrix.The content that is less than 1%Mn can improve intensity and the erosion resistance of aluminium foil alloy.The solubleness of Mg in Al is very large, and when eutectic temperature 450 degree left and right, the solubleness of this Mg is up to 15% left and right.Add micro-chromium Cr and can improve the erosion resistance of aluminium foil alloy.The solubleness of chromium Cr in aluminium is minimum, can suppress nucleus formation and crystal grain and swell.The combination of a little components and the above-mentioned percentage range of each component, determine by lot of experiments, the excellent balance with above-mentioned physical and mechanical properties that aforesaid combination and percentage range form aluminium foil composition of the present invention.
The present invention adjusts accordingly by the chemical composition in 8011 alloys, has overcome the prejudice of prior art so-called " when the aluminium foil iron-holder surpasses 0.9 % by weight, the flexibility of aluminium is damaged, as its bag variation of laminate ".By a large amount of experiments, physical property and the mechanical property of the final aluminium foil formed of the present invention: the O state, more than tensile strength is greater than 80～98Mpa, unit elongation>21%, Erichsen number >=more than 6.10,0.2% yield strength 455Mpa, springform E/Gpa:71.
Utilize the present invention and other matrix material, not only can realize synchronous extension, flow, and can meet polymer Li-ion battery aluminum-plastic composite membrane flexible packing material used punching deep degree 3～15mm or more than, meet the outer PET of polymer Li-ion battery aluminum-plastic composite membrane flexible packing material used and nylon BOPA innermost layer PP, the combined strength bination of CPP, PE is worth and rushes the requirement at dark right angle deeply to reach punching.
This aluminium foil is for the clad aluminum foil layer of polymer Li-ion battery flexible packing material, there is high barrier: because the pin hole rate produced is extremely low, water vapor transit dose and oxygen transit dose are almost 0g/m2d.1atm through overtesting, aluminium foil surface can reach without oil standard, and wetted surface tension force can reach 34 * 10
-3nPm.The roughness of working roll, by 0.1 original μ m, is brought up to 0.15 μ m, bounding force is improved greatly
The present invention adopts suitable thermal treatment process and machining deformation technique, and the rolled hardening element of Fe in aluminium alloy, the one-tenth of Si are analyzed.Because precipitate ground quantity is more, to separate out more fully, Fe, the Si solid solubility in aluminum substrate is lower, and forms and be uniformly distributed, the particle that<5 μ are tiny.Wherein, flash-point changes the pairing oil of 70 ℃ into.The rolling stock oil that flash-point is 70 ℃ is compared with the rolling stock oil of 82 ℃, and its viscosity is lower, and volatility is stronger, and the oil film of its formation is thinner, the oil that the aluminium foil dark face forms
Film is evenly distributed, and lubricity now is on the low side, and two frictional force between aluminium foil are increased, and makes between two-layer aluminium foil not exist relatively sliding.
Embodiment
In following examples, aluminum foil for flexible package of polymer lithium ion battery, take silicon Si, iron Fe, copper Cu, magnesium Mg, zinc Zn, Mn and aluminium Al carries out component as main chemical compositions.By weight percentage, silicon Si:0.09wt%～0.9wt%, iron Fe:0.6wt%～1.5wt%, copper Cu:0.006wt%～0.10wt%, manganese Mn:0.03wt%～0.05wt%, containing other trace element, such as zinc Zn, magnesium Mg, titanium Ti, chromium Cr, nickel metal alloy content add up to and are not more than 0.05wt%～0.15wt%, aluminium Al surplus can for 99% or more than.Other metal alloy content, magnesium Mg:0.005wt%～0.010wt%, Zn:0.005wt%～0.013wt%, titanium: Ti0.018wt%～0.05wt%, chromium Cr:0.008wt%～0.013wt%, nickel: 0.01wt%～0.06wt%.By any value of above-mentioned scope.
Preferably, silicon Si:0.2%～0.6% (wt), iron Fe:0.9%～1.1% (wt), copper Cu:0.007%～0.8% (wt), manganese Mn:0.04%～0.05% (wt), aluminium Al are surplus, and other metal alloy content total is less than 0.12% (wt).
Preferably, silicon Si:0.5%～0.8% (wt), iron Fe:1.2%～1.35% (wt), copper Cu:0.008%～0.9% (wt), manganese Mn:0.04%～0.05% (wt), aluminium Al are surplus, and other metal alloy content total is less than 0.10% (wt).
By the said ratio component, can roll method or sedimentation technical process according to the folded hypodesmus of routine, belt, passage is rolled calculating, roll speed selected of rate compilation principles, rolling load, selection and the adjusting of front and back tension force. the technical process of aluminium foil comprises, the founding of ingot casting and homogenizing, the hot rolling of sheet material and cold rolling, process annealing, the rolling of aluminium foil, finished products, secondary processing etc.In Homogenization Process, the diffusion ratio iron of silicon is faster, and silicon can reach balance by diffusion, and the changes in distribution of iron is very little, does not even change.By technical process: blank check → rolling → close volume → rolling → cut → check, pack, put in storage.230 ° 28 hours+270 ° of degeneration process using 34 hours.Rolling pass can be assigned as 0.3mm (H14) → 0.145mm → 01072mm → 0.032mm → 2 * 0.02mm (H18).Wherein to be placed on roll crown be 0.09mm to 1,2 passages, rolling on the roughing mill that the Ra value is 0.3 μ m; 3, to be placed on roll crown be 0.10mm to 4 passages, and the Ra value is 0.15
Rolling in μ m.Roll speed 1,2,3 passages are at 800mPmin～1200mPmin, and the 4th pass speed is controlled at 400mPmin～450mPmin.0.28mm aluminium foil stock will roll 0.04mm～0.12mm by 4 passages, with 290 ° of process annealings, 18 hours.The oil removing of aluminium foil paper tinsel face.Woollen through cold rolling, the roughing of some passages, in roll the aluminium foil that obtains different thickness with finish rolling.
The rolling of aluminium foil is carried out under the environment of oil lubrication, and aluminium foil surface inevitably can be stained with ROLLING OIL.Therefore, the roller-cleaning device of reply milling train is transformed, the pressure that roller-cleaning device is acted on supporting roll increases, and adds the urethane baffle plate of a width monoblock on the tie-beam between upper roller-cleaning device and two memorial archways, and the ROLLING OIL of entrance can not splashed the paper tinsel face of outlet above supporting roll.After the milling train of outlet activity, device adds that near the supporting roll place width keeps off oily curtain, and following ROLLING OIL can be thrown on the paper tinsel face, and, to splasher, purges tuyere and transformed, and adjusts angle and the blast of tuyere, makes the oil removing of milling train own reach optimum.
In the operation of rolling, the roughness of working roll is brought up to 0.5 μ m～0.18 μ m, the working roll roughness is 0.5 μ m preferably, the speed of controlled rolling finished product and rolling load, adopt low-flash pairing oil, the pairing oil that the rolling stock oil flash-point is 70 ℃, reduce oily effect, make roll produce a less pressure stress in aluminium foil surface, make to enter the reduced thickness of the oil film of distorted area.Reduce the oil pressure of ROLLING OIL and the temperature of raising ROLLING OIL, reduce the pass reduction of final pass.Reducing oil pressure and improving oil temperature is mainly in order to reduce oil film thickness and rolling oil mass, the pass reduction that reduces finished product is in order to reduce roll speed, thereby reduce the temperature in rolling district and the thickness of reduction oil film, also make work hardening more obvious, improve the intensity of aluminium foil simultaneously.Reduce oiliness improver content in ROLLING OIL, reduce the rolling oil viscosity, reduce the thickness of oil film.
In closing the process of volume, evenly oiling on coiling machine, strengthen and be coated with oil mass, underspeeds, and strictly controls the front aluminum foil thickness of pairing, and while making pairing, the thickness difference of two reaches requirement, otherwise does not allow pairing together.
Embodiment 1
By weight percentage, get Si:0.15wt%, iron Fe:0.22wt%, copper Cu:0.08wt%, manganese Mn:0.038wt%, aluminium Al: surplus, other metal alloy content: zinc Zn:0.006wt%, magnesium Mg:0.005wt%, titanium Ti:0.013wt%, chromium Cr:0.009wt%, nickel: 0.01w t%, but above-mentioned other metal element content total is not more than 0.05wt%～0.15wt%, add up to :≤0.15, such as, magnesium Mg:0.005wt%, Zn:0.005wt%, titanium: Ti0.018wt%, chromium Cr:0.008wt%, nickel: 0.01wt%.Made aluminium foil by aforementioned technique.
Embodiment 2
By weight percentage, get Si:0.2wt%, iron Fe:0.8wt%, copper Cu:0.10, manganese Mn:0.04, other metallic zinc Zn:0.01wt%, magnesium Mg:0.006wt%, titanium Ti:0.008wt%, chromium Cr:0.009wt%, nickel: 0.01w t%, but other alloying element zinc Zn, magnesium Mg titanium Ti, chromium Cr, Ni content total are not more than 0.05～0.15.Such as magnesium Mg:0.006wt%, Zn:0.007wt%, titanium: Ti0.019wt%, chromium Cr:0.009, nickel: 0.03wt%.And made aluminium foil by above-mentioned technique.
Embodiment 3
By weight percentage, get silicon Si:0.3wt%, iron Fe:0.9wt%, copper Cu:0.013wt%, manganese Mn:0.05wt%, other magnesium Mg:0.008wt%, zinc Zn:0.007wt%, titanium Ti:0.005wt%, chromium Cr:0.009wt%, nickel: 0.02w t%, but other metal element content total is not more than 0.05wt%～0.15wt%, such as: 0.008wt%, Zn:0.009wt%, titanium: Ti0.023, chromium Cr:0.01wt%, nickel: 0.04wt%.And made aluminium foil by above-mentioned technique.
Embodiment 4
By weight percentage, get silicon Si:0.05wt%, iron Fe:0.1.1wt%, copper Cu:0.006wt%, manganese Mn:0.03wt%, other metal alloy content magnesium Mg:0.009wt%, zinc Zn:0.008wt%, titanium Ti:0.0135wt%, chromium Cr:0.01wt%, nickel: 0.021, but above-mentioned other metal element content total is not more than 0.05wt%～0.15wt%, such as magnesium Mg:0.009wt%, Zn:0.11wt%, titanium: Ti0.02wt%, chromium Cr:0.012wt%, nickel: 0.03wt%.And made by above-mentioned technique.
Embodiment 5
By weight percentage, get silicon Si:0.0.9wt%, iron Fe:1.5wt%, copper: 0.10wt%, manganese Mn:0.05wt%, aluminium Al is wt99%, other metal alloy content magnesium Mg:0.009wt%, zinc Zn:0.008wt%, titanium Ti:0.0135wt%, chromium Cr:0.01wt%, nickel: 0.025.But adding up to, above-mentioned other metal element content should be not more than 0.05～0.15, such as, 0.010wt%, Zn:0.013wt%, titanium: 0.05wt%, chromium Cr:0.013wt%, nickel: 0.06wt%.
In the above-described embodiments, O state, the mechanical property of aluminium foil, substantially can reach: more than tensile strength is greater than 80～98Mpa, unit elongation>21%, Erichsen number >=more than 6.10,0.2% yield strength 455Mpa, the over-all properties of springform E/Gpa:71, deviate changes in 20% left and right.
Above-described is only the preferred embodiments of the present invention.It should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also make some distortion and improvement, these changes and change should be considered as belonging to protection scope of the present invention.
Claims (2)
1. an aluminum foil for flexible package of polymer lithium ion battery, this aluminum foil material at least contains silicon Si, iron Fe, copper Cu, manganese Mn and aluminium Al, silicon Si:0.2wt%～0.6wt% wherein, iron Fe:0.9wt%～1.1wt%, copper Cu:0.007wt%～0.8wt%, manganese Mn:0.04wt%～0.05wt%, aluminium Al is surplus, other metal alloy content total is less than 0.12wt%, other metal alloy mainly comprises, zinc Zn, magnesium Mg, titanium Ti, chromium Cr, nickel, described other metal alloy content is magnesium Mg:0.005wt%～0.010wt%, Zn:0.005wt%～0.013wt%, titanium: Ti0.018wt%～0.05wt%, chromium Cr:0.008wt%～0.013wt%, nickel: 0.01wt%～0.06wt% and<0.0005 boron,
It is characterized in that, the preparation method of described aluminum foil for flexible package of polymer lithium ion battery comprises the steps: blank check → rolling → close volume → rolling → cut → check and pack, wherein, 0.28mm 4 passages for aluminium foil stock, roll 0.04mm～0.12mm, with 290 ℃ of process annealings, 18 hours; The technique of degenerating in addition in this preparation method, 230 ℃ 28 hours+270 ℃ of degeneration process using 34 hours; In the operation of rolling, the roughness of working roll is brought up to 0.5 μ m～0.18 μ m, the speed of controlled rolling finished product and rolling load, adopt the pairing oil that the rolling stock oil flash-point is 70 ℃, reduces oily effect; In closing the process of volume, evenly oiling on coiling machine, strengthen and be coated with oil mass, underspeeds, and strictly controls the front aluminum foil thickness of pairing, and while making pairing, the thickness difference of two reaches requirement.
2. an aluminum foil for flexible package of polymer lithium ion battery, this aluminum foil material at least contains silicon Si, iron Fe, copper Cu, manganese Mn and aluminium A1, silicon Si:0.5wt%～0.8wt% wherein, iron Fe:1.2wt%～1.35wt%, copper Cu:0.008wt%～0.9wt%, manganese Mn:0.04wt%～0.05wt%, aluminium Al is surplus, other metal alloy content total is less than 0.12wt%, other metal alloy mainly comprises, zinc Zn, magnesium Mg, titanium Ti, chromium Cr, nickel, described other metal alloy content is magnesium Mg:0.005wt%～0.010wt%, Zn:0.005wt%～0.013wt%, titanium: Ti0.018wt%～0.05wt%, chromium Cr:0.008wt%～0.013wt%, nickel: 0.01wt%～0.06wt% and<0.0005 boron,
It is characterized in that, the preparation method of described aluminum foil for flexible package of polymer lithium ion battery comprises the steps: blank check → rolling → close volume → rolling → cut → check and pack, wherein, 0.28mm 4 passages for aluminium foil stock, roll 0.04mm～0.12mm, with 290 ℃ of process annealings, 18 hours; The technique of degenerating in addition in this preparation method, 230 ℃ 28 hours+270 ℃ of degeneration process using 34 hours; In the operation of rolling, the roughness of working roll is brought up to 0.5 μ m～0.18 μ m, the speed of controlled rolling finished product and rolling load, adopt the pairing oil that the rolling stock oil flash-point is 70 ℃, reduces oily effect; In closing the process of volume, evenly oiling on coiling machine, strengthen and be coated with oil mass, underspeeds, and strictly controls the front aluminum foil thickness of pairing, and while making pairing, the thickness difference of two reaches requirement.
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| CN1974813A (en) * | 2005-11-28 | 2007-06-06 | 镇江鼎胜铝业有限公司 | Alumium Foil for air conditioner |
| CN101383200A (en) * | 2008-10-20 | 2009-03-11 | 河南省银湖铝业有限责任公司 | Aluminum foil for electric cable and production method |
| CN101798646A (en) * | 2010-04-22 | 2010-08-11 | 镇江鼎胜铝业股份有限公司 | Aluminum alloy material and manufacturing method for dual-zero aluminium foils |
| CN102021446A (en) * | 2010-12-21 | 2011-04-20 | 湖南晟通科技集团有限公司 | Method for manufacturing aluminum-alloy double-zero aluminum foil |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1974813A (en) * | 2005-11-28 | 2007-06-06 | 镇江鼎胜铝业有限公司 | Alumium Foil for air conditioner |
| CN101383200A (en) * | 2008-10-20 | 2009-03-11 | 河南省银湖铝业有限责任公司 | Aluminum foil for electric cable and production method |
| CN101798646A (en) * | 2010-04-22 | 2010-08-11 | 镇江鼎胜铝业股份有限公司 | Aluminum alloy material and manufacturing method for dual-zero aluminium foils |
| CN102021446A (en) * | 2010-12-21 | 2011-04-20 | 湖南晟通科技集团有限公司 | Method for manufacturing aluminum-alloy double-zero aluminum foil |
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