TW201136012A - Perforated metallic foil - Google Patents

Abstract

A perforated metallic foil configured so that, even if the aperture ratio of the foil is increased, a reduction in the tensile strength of the foil is minimized to prevent the foil from breaking during handling thereof. A perforated metallic foil having oval through-holes which penetrate through the foil in the direction of the thickness thereof. Three adjacent through-holes are configured so that a triangle (ABC) formed by connecting the respective center points (A, B, C) of the openings of the three through-holes is substantially a regular triangle, and so that the through-holes form the triangle (ABC) in such a manner that any side of the regular triangle is parallel to the direction in which a tensile force is applied to the perforated metallic foil. The through-holes are formed with the shape of the triangle (ABC) maintained.

Description

201136012 VI. Description of the Invention: [Technical Field to Which the Invention Is Ascribed] The present invention relates to a metal crucible in a through-hole. [Previous technique] A carrier having a plurality of through-holes formed in the direction is formed in the thickness direction in a plurality of battery current collectors, and promotes a catalyst which reacts with the "---------------------- Micro-powder classification 目 mesh towel netting, solid-liquid container 4 screen for the separation process, mesh for the storage of microorganisms (net), dust filter for clean room, liquid #始钴, a,# It is used to protect the water from the liquid with the dust-proof beverage. It is used to modify the liquid and liquid. The electrical material refers to the field of the general scope. For example, in the patent document (the nickname), the patent is patented, the case is open to the public, and the collection of the hole is used. In order to prevent the active material from passing through the metal 11 of the gold number. ^ In the case of a secondary battery as described above, it has been used in recent years, and it has been used as a collector of a secondary battery - in addition, as in the above The higher the mouth rate, the wider the choice of the mouth rate / in each application 'also expected to be thinner, and open but 'when using metal foil as a collection of white as a two-cell battery collector, in gold Smell the cold room cloth active material. For example, in the case of a film-shaped electrode for a secondary battery, a case of a lithium ion-like roll is produced in the case of a film-shaped electrode for a secondary battery, as disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. In the roll, the film or the steel foil film is wound up in the roll shape, and the film is taken up by the π-side transfer, and coated on one side of the film: a plurality of support roller supports After the treatment such as drying, the film was subjected to a step (5) of the film on both sides to produce a film-like electrode wound into a roll at a t M + roll % axis. Extremely active material coating film As shown in the above, the metal foil is processed in the direction of the hexagram. The metal foil is easily wound and wound by the metal foil, and the metal foil is easily broken. In particular, when the metal v white is used as the current collector of the secondary battery, the metal lanthanum stretching having a through hole having a through hole is low in the processing step - it is easy to break. That is, it is expected that a metal crucible having a thinner hole is used, but on the other hand, it is necessary to prevent damage of the metal foil having a through hole during processing. There is a limit to the opening rate of the official/seeking 钕1 对于 对于 对于 对于 对于 如上 如上 ^ ( ( ( ( ( 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本Electric, fine, reduce the number of through-holes in a row to - half or less of the number of columns, to = ΓΓ ' ' to prevent damage due to the presence of through-holes, thereby smearing the active material in the metal, or in When the active shell is applied and the sheet is rolled into a roll, the reduction in the damage load in the tension application direction is reduced. In recent years, it has been possible to achieve a small and fine through hole and to achieve "reduction". It is a metal box with a through hole with a high opening ratio. that is,

S 4 201136012 In the storage of 7C parts and other components, the increase of the aperture ratio in a metal box with a limited area, it is necessary to provide a plurality of fine through holes to improve the opening... However, the special: I 3 As shown in the current collector of the hole, the distance between the through holes, that is, the distance between the holes, that is, the pitch of the holes is 0.5 to 10, and the number of the through holes is reduced in one row. When it is less than half of the number of columns, 'the opening diameter or the aperture ratio corresponding to the demand in recent years cannot be matched. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a metal foil having a through-hole which is thin and has a surface-enhanced opening ratio and a surface-strengthened tensile strength to prevent breakage during handling. SUMMARY OF THE INVENTION The inventors of the present invention have intensively studied the results, and have solved the above problems by employing the following metal case having a through. The metal having a through hole according to the present invention has a plurality of metal boxes having through holes which are formed in a through hole having a thickness of a through hole, and is characterized in that: three adjacent through holes are opened (4) Center points A, B. The triangle formed by the phase connection is substantially positively triangular open [formed to the direction of the load of the metal junction with the through hole, the triangle, ABC arranged in a parallel manner on either side, maintaining the three ^ A plurality of through holes are formed in the shape of the shape of the ABC. (Effect of the Invention) The metal foil having the through holes of the present invention is formed in a circular shape by abutting between the through holes, and the shape of the through holes is formed into a circular shape, whereby the metal foil having the through holes can be formed in 201136012. It is desirable for the metal Hi damage of the present invention having a through hole. That is, the metal v "is in the shape of the through hole and its arrangement phase, thereby enhancing the direction of the load tension when using the metal box having the beacon hole in the use of the JL. The tensile strength. As a result, the ratio, 〇^ ^ technology is thinner and higher open, 0 work t metal ·, white in the processing step of the broken shell 'can provide a good handling of the metal crucible with through holes. Embodiments can be::: A preferred embodiment of the metal crucible having a through hole according to the present invention: the second type of metal pig having a through hole has a plurality of opening shapes perforated in the thickness direction of the shellfish in a plan view The metal having the hole shape and the shape of the hole is reduced by the arrangement and shape of the plurality of through holes. The first figure shows the plurality of mothers in the metal case having the through hole of the present invention. A schematic view of a configuration example of a perforation. The through hole is formed in a plurality of shapes in a plan view: a circular shape. The metal foil having a through hole according to the present invention has a feature in the arrangement of a plurality of through holes, which is as shown in FIG. Figure 2 shows the use of triangle ABC In addition, as shown in Fig. 1 and Fig. 2, the triangle ABC is a triangle formed by connecting the center points A, B, and C of the openings of the three adjacent through holes la, lb, and 1. In other words, each of the through holes la, lb, and lc maintains a constant separation distance, and is formed so that the position at which the apex of the large angle rises is centered. - a through-hole is disposed in a manner in which the metal scarf having the through-holes is parallel to the direction in which the tensile direction of the tension is desired. 201136012 Here, the metal lanthanum having the through-holes is intended to be predetermined In the case of tension in the direction, for example, in the case of use, the metal box of the elongated strip is repeatedly formed to have a plurality of gold having a beak hole as a quantity product. The pattern manufacturing line having the through hole hole is formed. In the secondary processing of the surface treatment or cutting, etc.; ^ is additionally used in the metal of the through hole in the secondary battery 'in the metal - called the next, has a: gold stage or secondary processing stage Medium, the long strip shape = the collar Or roll out into the drum m to apply tension to the direction of the cylinder, and to have the = roll, and to squeeze the helmet water <I berth is easy to break. Eight years, the collection of secondary batteries The use of the body is clear. The metal foil with a through hole has a t, the use of this, the tendency of the metal and the thin type, because the == of the box will be lowered. Therefore, the metal having the through hole ~ with the above-mentioned dihedral ABC The arbitrarily-side of the rib is arranged in a parallel manner to prevent the decrease in the tensile strength of the rib in the direction of the load rib. 匕 In the metal foil having the through hole of the present invention The oval-shaped through-hole core has a long-circular shape in which the distance between the opening edge of the σ edge and the center of the opening σ is not the elliptical shape shown in Fig. 3 (a) or the third figure (b) In the case of the runway of the field, the rectangular parallelepiped rectangular rectangle formed by the parallel two sides of the arc is separated from each other, and (4). When the through hole having a circular shape is formed into a line symmetrical shape, it is preferable since cracking in the through hole can be suppressed to prevent a decrease in tensile strength. /, medium, the center point of the through-hole of the oval shape refers to the intersection of the long diameter and the short diameter of 5 7 201136012, and is formed as a point of the midpoint of the long diameter and the short pinch. Specifically, as shown in Fig. 3(a), the elliptical shape is ', '. The center of the through hole at the end of the month is the intersection point p of the path r 1 and the short path r2. ', 曰 long kv ^ R, in the case of a corner rectangle, as shown in the second figure (8), the opening distance is the longest point of the long diameter Γ1, and the blood opening distance is the shortest short diameter of the center point of the oval through hole斤: ..^ The intersection with the short ' 'and the point of the midpoint of either. If the long diameter of the through hole of the (four) shape means the longest part of the size outside the hole, the short diameter of the through hole means the phase, and the longest part of the size. When the metal case with the through hole is a long strip shape, the outer metal foil is wound or rolled into a roll shape ## θ. Eight-shaped αβ "μ ^ gate The direction rib is arranged in parallel with the side of the plurality of triangles ABC. The sway: the length of the metal having the through hole of the through hole having the oval shape is shown in Fig. 4, if the circular shape is penetrated When the hole system is equal to the direction of the load of the metal box having the through hole, the thickness of the metal box is =1, and even if the aperture ratio is increased, the metal pig having the through hole is pulled in the side. Stretching strength (4) Hole = If the through hole is elliptical or angular, the diameter is 5 times to 3 times that of the short diameter of the two long diameters. If the long diameter of the through hole is not = wide, it will become close to It is a circular shape, and it is not easy to obtain the effect of strengthening the tensile strength in the desired direction. This short diameter is 3 times the length-to-diameter ratio of the 蛀__ right perforation. ', ', the stretching of the tension in the short direction Strength will drop

S 8 201136012 Low. The long diameter of the through hole is preferably K1 times to 25 times the short diameter, and most preferably 1 to 2 times to 2 times the short diameter. When the metal foil having the through hole of the present invention is a metal box having a through hole in an oval shape, the formation accuracy of the through hole is ensured, and the opening pitch is reduced to ensure the opening σ ratio of the crucible, and the opening diameter of the through hole is It is better to use long path #m 300 " m. The term "opening pitch" as used herein refers to the separation distance between the centers of adjacent abutment holes. In order to ensure the formation of the through hole is sufficient for fine & a i〇"m#. On the other hand, in order to ensure a certain aperture ratio with a narrow opening pitch, the opening diameter of the through hole is preferably 300 " or less. The long diameter of the through hole is preferably 5 〇 "m 〜 15 〇 / / m. The opening diameter and the pitch of the through hole of the circular shape are in accordance with the aperture ratio, and the size of the hexagon is also determined. When the separation distance between the end portions of the opening edges of the through holes is too small, the tensile strength is lowered. Therefore, the pitch of the through holes (the length of the side of the two corners Abc) is determined by the opening diameter. The metal foil of the hole has a triangular ABC formed by connecting the centers of the adjacent three through holes to a substantially equilateral triangle, and a through hole having a circular shape is disposed at a position parallel to one side of the triangle ABC in the desired direction MD. In this way, the tensile strength in the desired direction can be enhanced. Therefore, the separation distance between the end portions of the opening edges of the adjacent through holes can be sufficiently reduced with respect to the opening pitch. For example, in the current collector having the through holes described in Patent Document 3 In the case of the direction towel, the portion where the perforation is not present is ensured, and the portion where the stress is applied is formed. As a result, in the current collector having the through hole described in Patent Document 3, it is in the line. Adjacent to the direction Through-hole 9 201136012' is not able to configure the through hole of I Μ + u ± , column. However, in the metal foil of the present invention and having a through hole, the moon is transmitted to the wide square h line. In the position shown, 'a through hole that can be adjacent to the direction of the summer towel field can arrange a plurality of shell perforations 1C in a limited area. Because of this, the first can be increased." All of the three through-f-holes adjacent to each other in the triangle 胤 are formed at equal intervals, but the metal case of the present invention is not limited thereto. For example, the relationship between the two sides of the hexagonal ABC in which all the holes of the metal case load tension are established in the direction of the MD in the direction of the MD 呈 帛 图 图 3 3 3 3 3 3 3 BC BC BC BC BC BC BC BC BC BC BC BC BC BC BC BC BC BC BC Multiple. The zinc foil having a beak hole is formed of, for example, copper, a steel alloy, a :: alloy, a silver alloy, or the like. The metal having a through hole of the present invention is preferably an average unit area port rate. It is m~65%. The aperture ratio of the average unit area is the weight of the average unit area of the metal perforations having the through holes, and is compared and converted based on the metal crucible of the same thickness. If the aperture ratio of the average unit area is less than 20%, the characteristics of the present invention in which the tensile strength is increased while increasing the aperture ratio without forming a plurality of through holes as in the present invention are not utilized. On the other hand, if the average π rate of the average unit area is more than 65%, it is difficult to ensure the tensile strength which can withstand the tension during winding or unwinding of the drum. Next, the preferred on = rate is 30% to 60%. The metal foil of the present invention having a through-hole is particularly suitable for use in a thickness of 1 "claw~40" If the thickness of the metal box with the through hole is not up to the summer

S 10 201136012 y m, the tensile strength is insufficient, the stability of the pore shape or the handleability is lowered, and in particular, it is difficult to ensure the tensile strength which can withstand the tension in the winding or unwinding of the drum. Further, when the thickness of the metal foil having the through holes is thinner than 7 " m, it is difficult to handle only the metal foil, but a support such as a base material or a micro-adhesive PET sheet may be separately provided for use. On the other hand, if the thickness of the metal foil having the through holes exceeds 30 #m, the advantage of using a metal foil having a through hole cannot be obtained in terms of small size and light weight "in terms of manufacturing cost". Wherein the preferred thickness is 5//m to 25/z m. The metal foil with the through hole of the present invention can be made by punching, laser piercing, printing, etching, liquid resisting, plating, dry film forming, etc., if it is known to have a through hole The material of the metal foil, the thickness, and the size or shape of the fine through hole may be appropriately selected. A method of forming a mold of a through-hole pattern using a resist method and then performing a mineral deposit is exemplified below. First, a mold is formed on the surface of the substrate. In terms of handling properties, the substrate is preferably copper, stainless steel or the like. Further, a conductive resin or a resin having a conductive layer may be used as the substrate. The mold has a thick yoke and is composed of a plurality of convex resists corresponding to the shape of the through hole of the metal ruthenium having a through hole to be produced. In the formation method of the mold, t' is a lithographic printing method such as a gravure printing method such as a quick-drying printing, a gravure printing method such as gravure printing, a stencil printing method such as a screen printing method, or a lithography method (such as 〇ff (4)). A printing method or a method in which a resist oil is used by a photolithography method, followed by drying and hardening. In the molding form, it is preferable to use any of the above printing methods in terms of production cost, and to mold In the case of the accuracy of 201136012, the photolithography method is preferred. When the eighth method is formed by the printing method as a convex resist of the mold, it is preferable to cover the substrate according to the shape and size of the through hole to be formed. The surface is also formed to have a minimum thickness which does not cause abnormal precipitation when the metal plating step is performed, and is formed in a shape in which the outer peripheral edge portion is inclined. The reason is that the metal formed after the metal plating is formed. The physical peelability of the plating layer and the mold is good and the productivity is good, and the surface shape of the end portion of the opening edge of the formed through hole is smooth, and the crack in the through hole is less likely to occur. The other two aspects are Light lithography A method of forming a convex resist as a mold. First, after a commercially available DFR (dry film resist) is laminated on a substrate, a mesh corresponding to the shape and size of the through-hole to be formed is formed.帛, removing the unnecessary portion to form a convex resist. Then, metal plating is performed, and after removing the residual convex resist pattern, the metal plating layer is rationally peeled off from the substrate crop. In the case where the commercially available Dm is removed, the metal-plated layer is rationally stripped. Then, in the state where the mold is formed on the surface of the substrate, it is used as a mold by the electrolytic method. The metal plating layer is electrolyzed in a portion other than the resist, and then the substrate and the mold are removed, thereby obtaining a metal foil having a through hole having a smooth shape in both sides of the opening edge of the through hole. The occurrence of cracks in the end portion of the opening edge when the load tension of the metal foil having the through hole is suppressed. In the case where the metal foil having the through hole is formed by electrolytic plating, the current density and plating can be adjusted. Liquid plating conditions, etc. For example, when a copper sulfate-based plating bath is used, the current density at the time of electrolytic plating is preferably in the range of 20 A/dm 2 to 12 201136012 100 A/dm 2 . At 20A/dm2, the sexuality of the rape will be reduced. On the other hand, if the current density is higher than l〇〇A/dm2, the composition of the mineral and dressing fluid will change easily due to heat generation, and it is difficult to form a good quality. In the metal money coating, when the through hole is formed by punching, the π is easy to burr in the through hole, and there is a possibility that the metal foil having the through hole is damaged, and the design is The accuracy of the product of the tensile strength is affected, and it is not suitable if the metal foil having the through hole of the small diameter through hole is difficult to adjust. The metal crucible having the through hole of the present invention is adjusted as described above. The formation position of the through hole 'is a high opening_ while preventing a decrease in tensile strength in a desired direction. Also #, the present invention is in a metal box having a through hole, which does not cause a problem to the tension. L L η Π The tensile strength is formed to a practically minimum level, ^ sighs another aspect, mainly It is easy to 祜6. The direction of the tension is strengthened and the tensile strength is strong. As a result, even if the metal foil of the + hole of the present invention has an aperture ratio, the physical property of the shell is due to the gold of the through hole, and the damage caused by the metal of the through hole can be prevented. The embodiment of the present invention has the embodiment of the present invention. [Example 1] The copper foil having a wide metal foil having a through hole having a thickness of 9 holes is provided with an elliptical shape penetrating through the heart point ABC. If the adjacent triangle is adjacent to the through hole, as shown in Fig. 1, the length of the edge is 245 # m and the metal with the through hole is "" Formed as the length of the long white in each through hole MD | roughly parallel position

S 13 201136012 Group foil 95/zm elliptical shaped through-hole metal foil. Here, the so-called opening weight 'based on a copper foil having a thickness of 10 μm' has a long aperture of 170/zm, and an aperture ratio of 24% has a through-hole ratio, and the average unit area is compared and converted. value. The metal foil having the through holes of the yoke example 1 was produced by the following method. First, a resist ink (a thermosetting ink for screen printing made by Toyo Ink Co., Ltd.) is applied to the surface of a substrate (thickness of a thickness of 3) by a lithographic screen printing method to form a plurality of layers which are to be produced. The pattern of holes corresponds to the convex resist. The convex resist is formed in a rounded shape in plan view, and is formed to have a gradually thinner thickness toward the outer peripheral edge portion. Next, the printed resist ink is thermally dried and hardened. Next, by impregnating the substrate on which the resist pattern is formed in an aqueous solution having a slow-base benzo-salt at 3 g/i, in the surface of the substrate on which the resist pattern is formed, the exposed substrate is exposed. Partially formed an organic release layer. The surface on the side where the resist pattern is formed on the substrate is subjected to copper plating, and at the portion where the organic release layer is formed, a thick 纟 10... copper plating layer is formed as a metal case having a through hole with a base material. Next, the copper bell layer is formed not only on the organic release layer but also on the outer peripheral edge of the convex resist. The copper plating conditions at this time were bath composition of copper sulfate 5 hydrate concentration of 250 g/L, sulfuric acid 8 〇s/L, Han, and Tian g L qi^^45C, and current density of 20 A/dm2. Next, the metal layer having the through holes is rationally stripped from the substrate, and the substrate is removed together with the resist pattern to obtain a metal flute having a through hole. The tensile strength and elongation of the metal drop having the through-hole obtained in Example 1 were measured, and the physical properties were evaluated. Tensile strength is according to the pull 201136012 stretch test (JISC651 1-1 992), the palace mine 1Λ and the ancient +, will see the length l〇_x length 100_8 with the hole of the metal foil for the length side -, The TD is measured in the wide direction of the mouth. Here, the longitudinal direction MD is in the direction in which the shape of the metal crucible having the ψt, and the beak hole is used, and the width direction TD is perpendicular to the longitudinal direction MD (orthogonal) direction. In addition, the method of measuring the elongation rate is to fix the distance between the jigs sandwiching the metal holes having the two holes, and to determine the displacement of the jig when the initial distance is measured as the damage, and based on the result, the following number 1 is used for calculation. . [Number 1] The prince rate = the color of the metal foil that has been detached from the through hole and the amount (curtain) ^^^ ~ '~~ 间 between the clamps, the metal foil with the through hole of the embodiment 1 is In the longitudinal direction MD, the tensile strength per 10 mm was 27. ON, and the elongation was U%. On the other hand, in the wide-width direction TD, the tensile strength per l〇mm was 14.5 N, and the elongation was 9%. The results of the fine example 1 are shown in Table 1. From the results, it is understood that the metal foil having the through holes of the first embodiment has a tensile strength and an elongation ratio which are more reinforced than the TD direction. [Table 1] ---- Example 9 Thickness (jum) 9.4 9.4 Long diameter (ua) Short diameter (um) Long diameter/short diameter pitch *1 (#m) Weight open π rate (3⁄4) Current density (A /dm2) Stretching (N/lOnu strength B width) -------! Extension rate (%) Rib direction TD direction - 170 1 7R 95 1.79 212x245 24 20 27.0 14.5 1.7 Chuan Wanxiang 0.9 9.4 170 1 ID 95 1.79 30 24 20 27 21.1 33.0 13.2 16.8 1.6 1.9 ] κ 0.7 0.9 4 9.4 175 115 1.52 30 31 25.0 17.2 i^J 5 10.1 108 96 1.13 130x151 39 20 17.5 11.0 1 5 1.0 Column 9.8 128 128 1.00 212x245 25 20 21.4 21.8 1 Q 1. U *1 spacing: height of the equilateral triangle ABC X - length of the side 1. '0 [Embodiment 2]

S 15 201136012 = Example 2 is a metal crucible having a through hole of a through hole having a thickness of 94 (4) as shown in the pattern in Fig. 4; The perforation of the shell is formed into a rectangular shape with a long diameter rl = i 75 ^ m, a short diameter, and an arc of both ends with a diameter of r2 = U5 " m. Next, when the adjacent ones of the center points of the berm holes are connected to each other, an equilateral triangle having a length of -m is formed as shown in Fig. 4, and is produced in the same manner as in the example " The long-diameter of each of the through-holes has a metal foil having a through-hole having an opening ratio of the through-hole metal foil in which the length and direction MD of the through-hole are substantially parallel. The tensile strength and elongation of the metal pig having the through-holes of Example 2 were measured in the same manner as in Example 1. The results of implementing your " are shown in Table i. From the results, it is understood that the metal foil having the through holes of the second embodiment has a tensile strength and an elongation ratio in which the MD direction is strengthened more than the TD direction. [Example 3] The metal foil of the gold hole having the through hole of Example 3 was formed into the same shape, that is, a metal foil which was produced under the same conditions as in Example 2 except that the electroless plating was performed under the same conditions as in Example 2. The box system is different from the embodiment in which the current density is different. "IL degree is set to 27A/dm2, and a metal foil having a through hole having the same shape and having a through hole is shown in Table 1. The foil can be said to have tensile strength. Further, the tensile strength and elongation of Example 3 were measured in the same manner as in Example 1 except for Example 1. Results of Example 3 As a result, it is understood that the metal elongation ratio of the through-holes of Example 3 is enhanced in the MD direction than in the TD direction.

16 S 201136012 Compared to 'stretch strength will increase. [Example 4] The gold of the through hole of Example 4 is the same as that of the metal crucible having the through hole of the second embodiment, and the current density at the time of making the Ρπ^ For a different case. That is, in the same manner as in the case of electrolytic plating, the imaginary current progress was set to 31 A/dm2, and the same shape of the metal hole having the through hole was produced under the same conditions as in the second embodiment. The tensile strength and elongation of the metal foil having the through-holes of the yoke example 4 were measured in the same manner as in the first embodiment. The implementation of the society 』4, the mouth is not shown in Table 1. From this, ,,. As can be seen, the metal foil of the fourth embodiment having the tensile strength and the elongation of the metal foil in the MD direction is more strengthened than the TD direction. Further, the tensile strength becomes higher as compared with the metal crucible having the through hole of the embodiment. [Embodiment 5] The copper perforated metal having a through hole and the metal mooring system having a through hole having a thickness of 10.1/m has a through hole having an elliptical shape, and the opening ratio is 39. % has a metal mesh with a through hole. The metal f" having a through hole of the fifth embodiment is formed by connecting the centers of the adjacent through holes and the respective points between the points ABC to an equilateral triangle having a length of 151/zm, and similarly to the embodiment , The long diameter of each of the through holes is at a position parallel to the longitudinal direction 〇 of the metal case having the through holes, and a plurality of through holes having a plurality of long diameters of 108 μm and a short diameter of 96 are formed. That is, the embodiment Compared with the third hole, a plurality of through holes having a relatively large opening area and a long diameter/short diameter are formed to form an opening ratio.

17 S 201136012 Metal foil oJL+ with through-holes In the case of a resist ink when a convex resist is formed on the surface of a substrate, a liver ink for screen printing made by Toyo Ink Co., Ltd. is used. The production conditions were produced under the same conditions as those of the real (four) 。. The tensile strength and elongation of the gold having the through-holes of Example 5 were measured in the same manner as in Example 1. The results of the present ac and the yoke example 5 are shown in Table 丨. From the results, it is known that the implementation of 丨^ Ximushi + human /, there is a metal foil of Beikong, even if the long diameter 盥 (four) is relatively small 'tensile strength, elongation rate is also more enhanced than the direction of the MD direction, especially the 'MD direction' The tensile strength is a thickness of 10" grade copper foil, opening peak q Q. / Nozzle 3W has a through-hole metal foil, which can be said to show a higher 値. [Comparative example] Comparative example shows no thickness 9. 8 " copper foil, a circular through-hole is an example of a metal foil having a perforation having an aperture ratio of 25% formed by a pattern uniformly distributed in a pattern shown in Fig. 6. The metal having a through hole The through hole of the foil is a circular shape having a diameter of 128 #m. The distance between the center points of the adjacent through holes is set to a pitch of 245 " m, and the separation distance between the end edges of the respective through holes is set to 117". The metal foil having the through holes was produced in the same manner as in Example 1. Comparison of Examples and Comparative Examples: The metal foils having the through holes of Examples 1 to 5 all showed that the tensile strength in the longitudinal direction of the load tension was sufficient. In addition, the extension rate indicates that it is practically practical. On the other hand, the comparative example has

S 201136012 The metal foil of the through hole is found to have a lower tensile strength in the MD direction and in the examples 1 to 5 than in the case of the skin. Therefore, in the example 1 to the embodiment 5, the metal drop having the through hole in the form of Mn is formed into a step of gold secondary processing having a through hole in the length of the square (four).笛如* 仕八 I&, .ν_, 5 kg for winding or unwinding, can be described as

Fully withstand the physical strength of the tension in the metal foil of the star-shaped + ^ ^ J ° °. In addition, the metal (10) compared with the metal H of the conventionally-perforated examples 1 and 2 and the metal of the comparative example have the same or higher porosity, and the tensile strength in the direction of the fairy can be made equal to that of the comparative example. Or above. From this result, if: the through hole of the metal pig in the special hole, the I ° MD) towel is strengthened by the damage resistance. Further, even if the aperture ratio is increased, the deterioration of the breakage resistance can be suppressed. (Industrial Applicability) The metal foil with a beak hole of the month can strengthen the desired direction: the strength can be increased, the aperture ratio can be increased, and the tensile strength can be maintained, and the physical strength can be improved. The metal of the hole. As described above, the metal case having the through hole in the high aperture ratio, which is excellent in the physical strength, is preferably the process 11 as the structure. Therefore, it can be suitably used for the current collector, the magnetic material, and the conductive material such as the battery: Materials are in a wide range of fields. Further, the metal (4) having a high aperture ratio and having a through hole is also excellent in damage resistance after being mounted as a structure in the final product, and thus can be, for example, as. It can be used for components that can be used for a long period of time, such as liquid reforming, which is used to modify liquids such as beverage water. 201136012 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing an arrangement example of through holes in a metal foil having a through hole according to the present invention. Fig. 2 is a schematic view for explaining the arrangement of the perforations in the metal foil having the through holes of the present invention. Fig. 3 (a) and (b) are schematic views showing an example of the shape of a through hole in a metal foil having a through hole according to the present invention. Fig. 4 is a schematic view showing an arrangement example of the through holes in the metal foil having the through holes of the present invention. Fig. 5 is a schematic view showing an arrangement example of the through holes in the metal foil having the through holes of the present invention. Fig. 6 is a schematic view showing an arrangement example of through holes in a metal foil having a through hole of a comparative example. [Description of main component symbols] la, lb, lc: through holes A, B, C: center point P: intersection point rl: long diameter r2: short diameter

Claims (1)

201136012 VII. Patent Application Range 1. A metal foil having a through hole having a plurality of through-hole metal foils penetrating through the through-holes in the thickness direction, wherein: three adjacent through holes are provided The triangle ABC formed by joining the respective center points a, b, and C of the opening is a substantially equilateral triangle, and is formed in a direction opposite to the load tension of the metal foil having the through hole, and any one of the sides is parallel. A triangular abc configured in a manner to maintain a shape of the triangle ABC. The metal case having a through hole according to the first aspect of the patent application, wherein the metal foil having a through hole is elongated The strip shape is arranged such that the metal foil having the bell holes is wound or unwound in a roll shape and is flattened with the plurality of triangle ABC J sides. 3. In the case of the metal foil having the through hole described in the 1st section of the patent of the 1st Gans, the octagonal shape of the oval shape of the oval shape is an elliptical shape and an oval shape of an oval shape, and the through hole is The long 妒, ^ force " is formed with a through hole in a manner parallel to the direction in which the metal foil loaded sheet having the through hole is parallel. 4_ As in the scope of the patent application, the metal foil with a through hole as described in the item, i.05 times in the 'elliptical shape or the angle of the long diameter of the long diameter system> is the aforementioned oval shape α 3 times the through hole. 5. As claimed in claim 1, wherein the average unit area is opened, and the metal box having the through hole is 20% to 65%. 21 S