WO2011067064A1 - Perforierte folie - Google Patents
Perforierte folie Download PDFInfo
- Publication number
- WO2011067064A1 WO2011067064A1 PCT/EP2010/066798 EP2010066798W WO2011067064A1 WO 2011067064 A1 WO2011067064 A1 WO 2011067064A1 EP 2010066798 W EP2010066798 W EP 2010066798W WO 2011067064 A1 WO2011067064 A1 WO 2011067064A1
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- WIPO (PCT)
- Prior art keywords
- film
- perforated
- laminate
- ceramic
- film according
- Prior art date
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- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/494—Tensile strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/34—Use of radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/028—Microfluidic pore structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/0283—Pore size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/04—Characteristic thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/24—Mechanical properties, e.g. strength
-
- 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
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
- Y10T428/24331—Composite web or sheet including nonapertured component
Definitions
- the invention relates to the construction and properties of thin perforated films, and more particularly to films having large open areas demonstrating adequate stability for subsequent processing operations, such as e.g. As the application of a coating or adhesive to withstand.
- Porous films, including microperforated films, are well known and a variety of uses and methods of manufacture have been found for these materials. Uses that have been described include battery separator, filters, air-permeable flexible packaging, components of wound dressings, and air-permeable membranes for use in clothing. Methods of preparation include, for example, those reviewed in "A review of the separators of liquid electrolyte Li-ion batteries", Journal of Power Sources, 164, (2007), 351-64. These methods include so-called dry and wet processes, phase inversion and thermally induced liquid-liquid phase separation. This review also describes how membranes, including perforated ones
- Polymer films prepared for use as a battery separator can be modified in a subsequent coating process to produce their own
- thin or ultrathin films are perforated, wherein a contact process such.
- B. needle punching brings the risk of tearing the film with it.
- US Pat. No. 7,083,837 A describes a method for perforating polymer film webs by means of a CO2 laser.
- the web is unwound and then stopped while the laser beam perforates a defined 2-dimensional surface, the motion of the beam being directed by a galvanometric scanner.
- a moving web is perforated by a stationary laser beam or stationary laser beams to form a series of perforated tracks in the laser
- EP 0 953 399 A Another example of a laser perforation method is provided by EP 0 953 399 A.
- a single laser beam is directed at spots on a moving film web by small mirrors mounted on the circumference of a drum which is rotated over the surface of the film.
- the hole formation is done by a removal process.
- Hole diameter of about 200 ⁇ are claimed for an excimer laser process.
- the main objective is to achieve larger holes, and examples of holes with a diameter of 5.05 mm are mentioned.
- the maximum hole resolution is the number of mirrors that can be on the drum and the minimum
- Porous films are typically characterized by a number of parameters, including hole diameter and shape, hole pattern, total open area (porosity), material, film thickness, tensile strength, and modulus of elasticity.
- JP 2006-6326860 A describes microperforated polymer films with thicknesses in the range of 1 to 25 m and with an open area of more than 10%.
- JP A 06100720 describes porous polypropylene films
- DE 196 47 543 C describes a thin perforated film web as packaging material such as a stretch film, the holes open when applying a tensile stress, without going into more detail on the tensile stress.
- WO 2008/102140 describes a process for perforating film webs by means of laser. However, the properties of the obtained perforated films are not described. Nor are there any examples of a freestanding film whose tensile strength is determined by a micro-indentation process with a porous coating on the substrate material.
- the present invention relates to the preparation and properties of thin, perforated films having sufficient stability to
- the tensile strength of the film according to the invention is given as the product in N / cm, which is obtained from the measured value obtained with the tensile strength tester and the thickness of the perforated film.
- a perforated film having a thickness of less than 20 m, a tensile strength of 2 N / cm to 40 N / cm and a hole area of 10 to 90% of an equivalent unperforated film is provided.
- Hole area (Area L oc h / Area Fo iie) * 00%.
- the tensile strength is defined in a manner known to those skilled in the art according to ASTM 882.
- coated or impregnated perforated film including as
- Films according to the present invention may comprise any type of film having a thickness of less than 20 m, preferably up to 15 ⁇ m, more preferably up to 12 m, even more preferably 10 ⁇ m or less, and most preferably 5 ⁇ m ⁇ or less, can be produced.
- a preferred lower limit of the thickness of film according to the present invention is about 1 ⁇ m.
- the film according to the invention may have a weight of 40 to 100% of the weight of the equivalent non-perforated film.
- thermoplastic films capable of laser perforation are preferred, including, but not limited to, polyester films.
- suitable thermoplastic materials include polyethylene (PE), polypropylene (PP), polyethylene glycol terephthalate (PET), polyethylene glycol naphthenate (PEN), polylactic acid (PLA), polyacrylonitrile (PAN), polyamides (PA), aromatic polyamides (Ar), polymethylmethacrylate (PMMA) ), Polyimide (PI) and their
- Copolymers films with polyester copolymers and polyester mixtures, as
- PET and PEN are preferred and PET is the most preferred.
- polystyrene e.g. As polyamides, polyacrylonitrile, polyimides, fluorinated polymers such.
- polyvinylidene fluoride polystyrene, polycarbonate, acrylonitrile butadiene styrene and cellulose esters.
- polymers selected from polyester film or polyamide, preferably polyamide 6.6, polyamide 12, or polyamide 6.
- the film may comprise a polymer, and may also contain additional components such as e.g. As plasticizers, mineral particles, waxes, dyes, lubricants, solvents or
- Nonstick and any other additives known in the art are capable of modifying the functionality or appearance of the film, which has an effect on such properties as e.g. Stiffness, tensile strength, blocking, slip, gloss, opacity, surface roughness, surface and bulk conductivity, and color.
- the base film ie the film before the
- Perforation a pigment or dye which absorbs laser energy at a suitable wavelength to facilitate or enhance the perforation by means of a laser or other form of radiation.
- the added pigment or dye increases the absorption of light at the lasing wavelength of the laser.
- Semiconductor laser in the near infrared range of the electromagnetic spectrum in a range from 690 to 1500 nm. For certain product applications, it is important
- the base film may also contain a coating or ink.
- the coating or ink may be on only one or both surfaces of the film.
- the coating or ink may be the entire or any part of
- the coating or ink has the property of absorbing energy different from that for the
- Perforation process used laser is emitted on, so that through
- the pattern may have a block area that is perforated with multiple holes.
- the pattern may comprise a set of dots, each defining the position and size of a single perforation.
- the coating or ink may contain additives of the type described above as additive components of the polymeric film as well as other components, such as e.g. As resins, surfactants,
- Viscosity modifiers As described in the art.
- the coating comprises a dye or pigment to absorb near infrared energy
- carbon is a preferred pigment for some applications due to its ease of incorporation low cost and its wide absorption over the entire spectral range. However, for some applications it is necessary to use alternative materials to minimize the effect of the coating on the color and opacity of the film material.
- the coating can be applied from an organic solvent or a water-based carrier. Alternatively, it can be used as a 100% solids coating which is subsequently exposed to UV light or UV light
- Electron beam source is cured, are applied.
- Any known printing or coating method may be used to apply the coating, including slot die, gravure, roller, and curtain coating methods.
- Preferred printing processes include offset, stamping,
- the perforated films of the present invention typically have perforations or holes with an average (i.e., average) diameter in the range of 50 to 250 m, preferably 51 to 150 m, more preferably 52 to 125 ⁇ m.
- the average diameter is the average of the maximum and minimum diameters of a perforation, as determined by optical or scanning electron microscopy (SEM).
- the perforations are substantially the same size, varying, for example, by only up to 10% or less in average diameter.
- the film according to the invention may have perforations, each of which has a raised edge at its periphery, which has a greater thickness than the film at its unperforated area. Further, in the film, a near infrared absorbing material may be present in the raised edges of the perforations, but may not be present in areas between the perforations.
- Porosities possible.
- Most pore-forming processes produce circular or substantially circular holes.
- the maximum open area is a function of the maximum hole packing density that can be achieved for this shape.
- the invention is not limited to the generation of circular or oval holes, but extends to a wide range of other geometric shapes, including polygons such as polygons. Hexagons. Due to the more efficient packing densities that can be achieved therefore, very high porosities up to 90% open area are possible, provided that the resulting film is the
- a continuous perforation surface is meant a surface in which the maximum distance between the centers of adjacent holes is less than or equal to twenty times the average diameter of the holes.
- An additional possibility for quantifying the degree of perforation in the thin films of the present invention is to reduce the total solid, ie polymeric or metallic, cross-sectional area of the film which is present in both the machine and the machine Transverse direction remains after the perforation process to look at.
- the cross-sectional area is determined by subtracting the cross-sectional area occupied by the pores or perforations from the total cross-sectional area of the film before the perforation.
- Cross sectional area can be determined by optical or scanning electron microscopy.
- the total cross-sectional area is within a range of 95% to 10%, preferably 90% to 30%, of an equivalent unperforated film.
- the weight of the perforated film of the present invention is from 20% to 100% of the weight of an equivalent imperforate film or equal to the weight of a discrete perforated surface of the film greater than or equal to 20% and up to 100% of an equivalent discrete area of the film was not perforated. This amount of weight maintenance will be described below.
- Film thickness at the perforation edge depends critically on the thickness of the precursor film or on the combined thickness of the film and any one applied thereto
- the degree of perforation depends on the intended end use of the perforated film of the present invention.
- the perforation pattern can significantly contribute to the physical properties of the perforated films of the invention, which can be attributed to properties such as e.g. B.
- Tensile strength and tensile modulus affects. Considering these effects is particularly important when producing thin films with relatively high open areas.
- a perforation structure having a series of parallel perforations as shown in FIG. 1 has a significantly lower tensile strength in the axis 1 than a hole pattern in which the holes are offset in alternate rows, as shown in FIG minimum cross-sectional area on which these properties depend is significantly greater in the case of FIG.
- a particular advantage of the present invention is that thin perforated films are produced, which have sufficient stability to a further process such.
- Coating and impregnation processes involve applying a liquid medium to the perforated film and then drying and / or curing to effect a crosslinking or polymerization reaction, for example, by applying heat or irradiation with UV light or an electron beam.
- Impregnation processes achieve the penetration of the perforated film with the impregnation material so that this material is present within the pores of the perforated film. In some cases, the impregnation material may completely encapsulate or encapsulate the film. In the execution of the drying and / or curing steps shrinks the applied coating or the
- the factors that determine the tensile strength of a microperforated film are the material of the film and the conditions of film production along with its minimum cross-sectional area.
- the latter parameter again relates to film thickness and perforation properties (open area and perforation pattern).
- the thin, perforated films of the present invention must have a tensile strength of at least 2 N / cm in order to have sufficient processability when a coating is applied thereto.
- the tensile strength is from 5 N / cm to 20 N / cm, and more preferably from 10 N / cm to 20 N / cm.
- Perforation given film which is called in the context of the present invention precursor film, for example, can prevent the achievement of the required specified value of the tensile strength after perforation.
- the requirement to achieve the specified value is detrimental to the commercial viability of the perforated film because it requires the use of a thicker film than desired.
- the adverse effect could result from the increased cost of the precursor film or the increased cost of the perforation process, for example, because the perforation rate is reduced.
- one possible countermeasure is to place the otherwise unacceptably thin film into a laminate with a porous medium, such as e.g. As a nonwoven material, which has a property of improving the tensile strength compared to the film alone, incorporate.
- the subject of the present invention is therefore also a laminate which has a
- perforated film according to the invention and a porous medium, to which the film of the invention is laminated, wherein the laminate has a tensile strength of 2 to 50 N / cm.
- the typical porous medium may be a nonwoven, it includes tissue paper and another porous medium with long cellulosic fibers, such. Manilla fibers, synthetic polymer fibers and microfibers, and mixtures thereof.
- Typical thicknesses for such porous media are in the range of 15 to 60 ⁇ . It is important that the porous media laminated on the perforated film does not affect its performance. Thus, it is desirable that the void sizes in the porous media be greater than the size of the pores in the perforated film, and that any lamination adhesive used not block the pores in both components of the laminate. The selection of suitable materials would be routine for professionals.
- the porous media may be removable from the laminate after perforating the film or after coating or impregnating the perforated film.
- the film itself may have a thickness of less than 20 ⁇ and a hole area as described above with respect to the independent film. typical However, lamination of films at the lower end of this thickness range is most useful.
- the perforated film of the laminate according to the invention may comprise or consist of a thermoplastic polymer.
- this polymer may be selected from polyester, polyethylene terephthalate,
- Polyethylene naphthenate or polyamide, preferably polyamide 6.6, polyamide 12, or polyamide 6.
- the perforated film has a lower melting point than the porous medium
- the porous medium has a lower melting point than the perforated polymer film
- the lamination may be performed before or after the perforation of the film.
- Films according to the present invention or for inclusion in the laminates of the present invention can be produced by any known perforation process.
- Non-contact methods including laser perforation, or
- a contact process such as the use of a thermal printhead, may be advantageous.
- Other methods include needle or punching.
- the unperforated sheet is moved over the head at a rate that allows sufficient heat energy to be transferred into the sheet to allow the sheet to pass through Perforation takes place.
- individual dot heaters on the thermal printhead are turned on and off by a head driver
- the film has a non-stick coating on the head contact side.
- Laser perforation can be accomplished by known techniques, typically using a single beam or a small variety of high-source
- Performance such as As a CO2 or YAG laser.
- These methods require that the laser beam be pulsed and moved across the surface of the precursor film by such means as a galvanometric scanner, such that the laser beam is moved
- a preferred laser process for perforating large areas of a thin film at economically viable rates, wherein the melting is the sole or dominant process, is to use a semiconductor laser array as
- the laser assembly typically includes a series of semiconductor laser modules or chips that provide a plurality of laser channels. By linking the modules together, it is possible to create wide linear arrays that can be arranged across a continuous film web so that a laser channel is located above each point to be perforated as the film is moved underneath.
- Such a device avoids the problems of previous processes involving a single or a small number of laser beams, with the result that it is possible to achieve large scale perforation of film webs at linear velocities several orders of magnitude higher than previously possible.
- Such lasers typically operate with shorter wavelengths within the near infrared (NIR) range of the electromagnetic spectrum.
- NIR near infrared
- energies of individual laser channels above 200 mW can be achieved.
- lasers are selected on the basis of power, stability and wavelength. In particular it is
- a polymeric film having little or no energy absorption at the wavelength of the perforating laser is selectively coated or printed with a material to increase the energy absorption at the laser wavelength. Consequently, it is possible to selectively perforate this film using laser arrays with simple controls that provide pulses of laser energy throughout the available film surface. By such means it is possible to selected perforation surfaces such. B. perforation patches or bands within the entire surface of the film to produce. Alternatively, it is possible to have decorative patterns or patterns, the codes or logos for
- An alternative means of selective perforation is to configure the laser array so that each laser channel is individually addressable.
- head driver software it is possible to produce a very wide selection of perforation patterns within the limits of laser channel resolution.
- the perforation of films with little or no absorption at the operating wavelength of the perforation lasers can be achieved if the films are selectively printed with energy absorption points of ink where perforation is required. Through this process, it is possible to create a variety of hole shapes and sizes determined by the shape and size of the printed dot of energy absorption ink.
- the dots may be substantially the same size, for example a middle one Have diameter of 10 to 125 ⁇ .
- the laser assembly and / or the foil may be arranged to achieve relative movement between the two.
- the laser arrangement can be arranged for example so that a laser line across the film to be perforated, ie transversely to the length of the film
- the laser assembly may then be movable over the surface of the film and / or the film may be arranged to move relative to the laser assembly, which may be stationary.
- Head resolution and / or providing complex head driver electronics and software it is very easy to change the size and position of perforations by changing the print pattern.
- the thin, perforated films of the present invention and their laminates can find use in a variety of end uses, whether these films or laminates are coated or uncoated, impregnated or unimpregnated.
- the films of the present invention (whether in stand-alone or laminated) can be coated or impregnated with a variety of coating materials for a variety of purposes.
- this laminate When the laminate of the invention is coated or impregnated with a ceramic material, d. H. after being perforated, this laminate can be special
- the thin perforated films of the present invention may also be referred to as
- the films according to the invention can be used as packaging material for defined atmospheres, electrochemical membrane or filter medium, or as
- Battery separator wherein the film is optionally coated or impregnated with ceramic or non-ceramic material, find use.
- shutdown layer This is a security feature that is uncontrolled
- a two-layered structure such.
- a laminate formed from a microperforated film and a nonwoven web it is possible to create a shutdown layer by selecting these components so that one component provides mechanical strength and thermal stability and the other component provides the shutdown function by its relatively low melting point.
- the shutdown layer melts, thus blocking the pores in the other component, thus substantially stopping the ion flux within the battery cell, thereby causing a thermal shock Loss of control is prevented.
- the shutdown layer has a
- the shutdown function can be achieved, for example, by selecting a polyethylene film as a component of the microperforated film in conjunction with, for example, a synthetic nonwoven with polyester (PET) fibers or polyester microfibers.
- the shutdown function may be accomplished by the use of a nonwoven fabric having low melting point fibers such as e.g. B.
- the high perforation level that can be achieved by the present invention makes the films useful for a number of other end uses, including as air-permeable packaging material, electrochemical membranes for use in a variety of applications, and disposable filter media.
- the present invention provides a battery having as a battery separator a perforated polymeric film or laminate of the type described above.
- the subject of the invention is therefore likewise a battery with a battery separator which comprises or is the perforated film or laminate according to the invention.
- the perforated foil or laminate of this battery with
- EXAMPLE 1 A polyethylene terephthalate (PET) film having a nominal thickness of 6 ⁇ m was coated with a water-based ink containing a carbon pigment sold under the name Pacific Black R TM (available from Antonine Printing Inks Ltd.) to form a coating with 1.0 g / m 2 dry weight capable of absorbing light in the near infrared. The thickness of the coated film was about 7 ⁇ .
- PET polyethylene terephthalate
- the coated film was perforated using a semiconductor laser module operating at 980 nm capable of a maximum fluence of 255 J / cm 2 .
- the resulting perforated film had a number of very similar holes with a mean diameter of 50 ⁇ .
- a cross section of a typical perforation was analyzed by REM (PHENOM, FEI Company) and the
- Table 1 shows the data obtained:
- Film volume occupied by the perforated hole is 10273 mm 3
- the volume of molten polymer present as an elevated rim around the hole thus represents 82% of that removed by the formation of the hole
- PET polymer films with PET polymer were Mylar C (DuPont Teijin Films). The middle one
- the tensile strengths for the other examples were determined by calculation, the tensile strength taking into account the solid cross-sectional area of the unperforated precursor films with 209 N / mm 2 , the value for the PET film according to
- a ceramic coating mixture was prepared from 4500 ml of a 10% solution of polyvinylidene fluoride / hexafluoropropylene copolymer (Kynar Flex 2801, Arkema) to which was added a mixture of 55% by weight of alumina (CT3000 Alcoa) and acetone, to the 4 g Nitric acid had been added. The mixture was stirred with a paddle stirrer for 1 h at 300 rpm.
- the mixture was subjected to an ultrasonic treatment (Hielscher UP 400S) for about 2 h until the maximum particle size did not exceed 10 ⁇ m.
- the samples of the perforated film of the present invention were prepared for coating so as to have a single perforated area (10 cm x 10 cm) with an unperforated edge of at least 15 mm on each side.
- Each of the perforated films were coated by manual immersion in the coating mixture. Through this process, the coating mixture impregnated the pores and adhered to both surfaces of the film. Upon being withdrawn from the coating mixture, the coated film was hung vertically to allow excess mixture to drop and dry at room temperature for 12 hours to obtain a porous resin medium.
- films according to the invention of Examples 2.2 to 2.4 remained completely flat and were subsequently incorporated as a separator in lithium batteries. It has been found that they allow batteries having a comparable performance, in which the separator a
- the average hole diameter was 200 ⁇ with a hole content of about 10%.
- the tensile strength was measured as in Comparative Example 2.1 and in Example 2.2.
- the film according to the invention had a tensile strength of 31 N / cm and was very easy to wind up and coat with these properties without any disturbances or irregularities being observed.
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- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Laminated Bodies (AREA)
- Filtering Materials (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012541381A JP2013512974A (ja) | 2009-12-03 | 2010-11-04 | 穴加工されたフィルム |
CN2010800546237A CN102665880A (zh) | 2009-12-03 | 2010-11-04 | 穿孔膜 |
US13/512,950 US20120244412A1 (en) | 2009-12-03 | 2010-11-04 | Perforated film |
EP10774209A EP2506958A1 (de) | 2009-12-03 | 2010-11-04 | Perforierte folie |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009047440.4 | 2009-12-03 | ||
DE102009047440 | 2009-12-03 | ||
DE102010001702A DE102010001702A1 (de) | 2009-12-03 | 2010-02-09 | Perforierte Folie |
DE102010001702.7 | 2010-02-09 |
Publications (1)
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WO2011067064A1 true WO2011067064A1 (de) | 2011-06-09 |
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PCT/EP2010/066798 WO2011067064A1 (de) | 2009-12-03 | 2010-11-04 | Perforierte folie |
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US (1) | US20120244412A1 (de) |
EP (1) | EP2506958A1 (de) |
JP (1) | JP2013512974A (de) |
KR (1) | KR20120098761A (de) |
CN (1) | CN102665880A (de) |
DE (1) | DE102010001702A1 (de) |
WO (1) | WO2011067064A1 (de) |
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CN102867884A (zh) * | 2011-07-08 | 2013-01-09 | 茂迪股份有限公司 | 图形化半导体基材表面的方法 |
WO2013131716A1 (de) * | 2012-03-09 | 2013-09-12 | Evonik Litarion Gmbh | Perforierte polymerfolien mit verbesserter toleranz gegen zugspannung |
US20220324058A1 (en) * | 2021-04-09 | 2022-10-13 | INTERLAS GmbH & Co. KG | Microperforation method with a moving web |
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US8662854B1 (en) | 2010-05-21 | 2014-03-04 | Fastskinz, Inc. | Turbine with turbulence inducing surface |
US9831043B2 (en) | 2010-09-09 | 2017-11-28 | California Institute Of Technology | Electrochemical energy storage systems and methods |
DE102011003186A1 (de) | 2011-01-26 | 2012-07-26 | Evonik Degussa Gmbh | Dünne, makroporöse Polymerfolien |
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CN102867884A (zh) * | 2011-07-08 | 2013-01-09 | 茂迪股份有限公司 | 图形化半导体基材表面的方法 |
WO2013131716A1 (de) * | 2012-03-09 | 2013-09-12 | Evonik Litarion Gmbh | Perforierte polymerfolien mit verbesserter toleranz gegen zugspannung |
CN104321371A (zh) * | 2012-03-09 | 2015-01-28 | 赢创利塔里安有限责任公司 | 对拉伸应力具有提高的耐受性的穿孔聚合物膜 |
US20220324058A1 (en) * | 2021-04-09 | 2022-10-13 | INTERLAS GmbH & Co. KG | Microperforation method with a moving web |
Also Published As
Publication number | Publication date |
---|---|
EP2506958A1 (de) | 2012-10-10 |
DE102010001702A1 (de) | 2011-06-09 |
JP2013512974A (ja) | 2013-04-18 |
KR20120098761A (ko) | 2012-09-05 |
CN102665880A (zh) | 2012-09-12 |
US20120244412A1 (en) | 2012-09-27 |
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