JP2018177377A - Roll shape laminating material - Google Patents

Roll shape laminating material Download PDF

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Publication number
JP2018177377A
JP2018177377A JP2017073704A JP2017073704A JP2018177377A JP 2018177377 A JP2018177377 A JP 2018177377A JP 2017073704 A JP2017073704 A JP 2017073704A JP 2017073704 A JP2017073704 A JP 2017073704A JP 2018177377 A JP2018177377 A JP 2018177377A
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Japan
Prior art keywords
laminate material
metal foil
roll
ribbon
different thickness
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JP2017073704A
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Japanese (ja)
Inventor
勉 雁瀬
Tsutomu GANSE
勉 雁瀬
健祐 永田
Kensuke Nagata
健祐 永田
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Resonac Packaging Corp
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Showa Denko Packaging Co Ltd
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Priority to JP2017073704A priority Critical patent/JP2018177377A/en
Priority to CN201820452251.7U priority patent/CN208345486U/en
Publication of JP2018177377A publication Critical patent/JP2018177377A/en
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  • Winding Of Webs (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce generation of patterns on a roll of laminating material having sections having a different thickness.SOLUTION: A laminating material 1 in which a metallic foil 11 and resin layers 13, 15 are adhered has repeat of different thickness parts 21 having a different thickness from a periphery in a MD direction (Machine Direction) at a main region 23 excepting for ear parts 22 at both ends in a TD direction (Transverse Direction). The laminating material 1 is wound on a winding core 2 together with two ribbons 30 overlapping with each of the ear parts 22 into multiple layers. The ribbons 30 are sandwiched between the wound laminating material 1.SELECTED DRAWING: Figure 3

Description

本発明は、蓄電デバイスの外装体や食品や医薬品の包装材に用いられるラミネート材を巻き芯に巻き付けたロール状物に関する。   BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a roll-like product obtained by winding a laminate material used for an exterior body of an electricity storage device or a packaging material for food or medicine on a winding core.

携帯通信端末機器用蓄電池、車載用蓄電池、回生エネルギー回収用蓄電池、キャパシタ、全固体電池等の電池は小型化、軽量化に伴い、従来使用されていた金属製の外装体に代えて、金属箔の両面に樹脂フィルムを接着剤で貼り合わせたラミネート材製の外装体が用いられることが多くなっている（特許文献１参照）。   Batteries such as storage batteries for mobile communication terminals, storage batteries for vehicles, storage batteries for regenerative energy recovery, capacitors, all-solid-state batteries, etc. Metal foils are used in place of conventionally used metal outer casings as their size and weight are reduced. In many cases, an outer package made of a laminate material is used, in which resin films are bonded to each other with an adhesive agent (see Patent Document 1).

特許文献１に記載されたキャパシタ用ラミネートケースは、ケース内側の樹脂フィルム層を切り欠いて金属箔を露出させて電極接続部を形成し、ケース外側の樹脂フィルム層を切り欠いて金属箔を露出させて電極端子を形成したものである。このタイプのラミネートケースはタブリードを必要としないので、キャパシタの小型軽量化を図ることができる。   In the capacitor laminate case described in Patent Document 1, the resin film layer inside the case is notched to expose the metal foil to form an electrode connection portion, and the resin film layer outside the case is notched to expose the metal foil To form an electrode terminal. Since this type of laminate case does not require tab leads, the capacitor can be made smaller and lighter.

また、ラミネート材における金属箔の露出方法として、出願人は金属箔と樹脂フィルムの貼り合わせ工程において露出予定部に接着剤を塗布しない部分を形成し、貼り合わせ後に接着剤未塗布部上の樹脂フィルムを切除する方法を提案した（特許文献２参照）。この方法によれば、露出予定部は金属箔と樹脂フィルムとが接着されていないので容易に樹脂フィルムを切除でき、かつ金属箔表面が接着剤で汚損されることもない。   In addition, as a method of exposing metal foil in a laminate material, the applicant forms a portion not to apply an adhesive to the portion to be exposed in the step of bonding metal foil and resin film, and after bonding, resin on unapplied portion A method for cutting a film has been proposed (see Patent Document 2). According to this method, since the metal foil and the resin film are not adhered to the portion to be exposed, the resin film can be easily cut off, and the metal foil surface is not contaminated with the adhesive.

また、金属箔と樹脂フィルムの貼り合わせ工程において、金属箔の露出予定部に離型材を貼り付け、または塗布した上で樹脂フィルムを貼り合わせ、その後樹脂フィルムを切除する際に離型材を樹脂フィルムとともに除去する方法もある。   Further, in the step of bonding the metal foil and the resin film, the resin material is bonded after the mold release material is pasted or applied to the exposed part of the metal foil, and then the resin material is removed when the resin film is cut off. There is also a method to remove along with

特開２０１３−１６１６７４号公報JP, 2013-161674, A 特開２０１５−２０５５０４号公報JP, 2015-205504, A 特開２０１４−１５３３７号公報JP, 2014-15337, A

上記のラミネート材は各層を貼り合わせて積層体とし、貼り合わせ工程に続いて巻き芯に巻き取られ、原反はロール巻きの状態で保管される。また、原反をほどきながら樹脂フィルムの樹脂フィルムの一部切除を行って別の巻き芯に巻き取られる。   The above-mentioned laminate material is laminated into layers to form a laminate, which is wound on a winding core following the laminating step, and the raw fabric is stored in a rolled state. In addition, the resin film of the resin film is partially cut away while being unrolled, and is wound around another winding core.

金属箔露出部を形成するためのラミネート材の原反は、接着剤未塗布部を有するものはその部分が周囲よりも厚みが薄く、離型材を付与したものはその部分が周囲よりも厚みが厚くなっている。このため、長尺のラミネート材を巻き芯に複数重に巻き付けてロール状にすると、厚みの異なる部分の形状が重なったラミネート材に転写される型付きが発生することがある。また、樹脂層の一部切除して金属箔露出部を形成した後のラミネート材も金属箔露出部が形成された部分が周囲よりも厚みが薄くなっているので、ロール状にすると型付きが発生することがある。このような型付きはラミネート材の外観品質を低下させるものである。   The raw material of the laminate material for forming the metal foil exposed part, in the part with adhesive uncoated part, the part is thinner than the surrounding, and the part to which the releasing material is applied, the part is thicker than the surrounding It is getting thicker. For this reason, when a long laminate material is wound around a winding core in a plurality of layers to form a roll, there may occur a case where the shape of portions having different thicknesses is transferred to the laminated laminate material. In addition, the laminated material after partially cutting the resin layer to form the metal foil exposed portion is also thinner than the surrounding portion where the metal foil exposed portion is formed. It may occur. Such die attachment degrades the appearance quality of the laminate material.

なお、特許文献３には、粘着テープのロール状物において、巻き付け始端部に形成される段差によって生じる段差痕を低減する方法として、段差部に樹脂を満たしてスロープを形成する段差痕低減構造が記載されている。しかし、前記特許文献３の段差痕低減構造は厚みが一定のテープを対象としたものであり、厚みの異なる部分を有するラミネート材の型付きを低減することはできない。   In Patent Document 3, as a method of reducing a step mark caused by a step formed at a winding start end in a roll of adhesive tape, a step mark reducing structure in which resin is filled in the step and a slope is formed is disclosed. Have been described. However, the step mark reduction structure of Patent Document 3 is directed to a tape having a constant thickness, and can not reduce the molding of a laminate material having portions with different thicknesses.

本発明は、上述した技術背景に鑑み、厚みの異なる部分を有するラミネート材のロール状物において型付きを低減することを目的とする。   An object of the present invention is, in view of the technical background described above, to reduce molding in a roll of laminate material having portions with different thicknesses.

即ち、本発明は下記［１］〜［４］に記載の構成を有する。   That is, this invention has a structure as described in following [1]-[4].

［１］金属箔と樹脂層が貼り合わされたラミネート材は、ＴＤ方向（Transverse Direction）両端の耳部を除く主領域に、周囲と厚みの異なる異厚み部をＭＤ方向（Machine Direction）に繰り返し有し、
前記ラミネート材が各耳部に重ねられた２本のリボンとともに巻き芯に複数重に巻き付けられ、巻き付けられたラミネート材の間にリボンが挟み込まれていることを特徴とするロール状ラミネート材。 [1] Laminated material in which metal foil and resin layer are bonded together has different thickness portions with different thickness from the periphery repeatedly in the MD direction (Machine Direction) in the main area except the ear parts at both ends in the TD direction (Transverse Direction) And
A roll-shaped laminate material, wherein the laminate material is wound in multiple layers around a winding core together with two ribbons stacked on each ear portion, and the ribbon is sandwiched between the wound laminate materials.

［２］前記異厚み部が、樹脂層の一部が除去されて金属箔が露出する金属箔露出部、または前記金属箔露出部の形成予定部によって形成されている前項１に記載のロール状ラミネート材。   [2] The roll according to item 1 above, wherein the different thickness portion is formed by a metal foil exposed portion where a part of the resin layer is removed to expose the metal foil, or a planned formation portion of the metal foil exposed portion Laminated material.

［３］前記リボンのＭＤ方向の引張伸びが１００％未満である前項１または２に記載のロール状ラミネート材。   [3] The roll laminate material according to the above 1 or 2, wherein the tensile elongation in the MD direction of the ribbon is less than 100%.

［４］前記リボンの厚みが１０μｍ〜２００μｍである前項１〜３のうちのいずれか１項に記載のロール状ラミネート材。   [4] The roll-shaped laminate material according to any one of the aforementioned Items 1 to 3, wherein the thickness of the ribbon is 10 μm to 200 μm.

上記［１］に記載のロール状ラミネート材は、リボンが挟み込まれている耳部は耳高となって強く巻締められ、リボンが挟み込まれていない主領域は緩く巻かれている。異厚み部のある主領域は緩く巻かれているので、重なり合ったラミネート材が強く接触することがなく、異厚み部による型付きが低減される。   In the roll-like laminate material described in the above [1], the ear portion in which the ribbon is sandwiched is tightened as the height of the ears, and the main region in which the ribbon is not sandwiched is loosely wound. Since the main region having the different thickness portion is loosely wound, the overlapping laminate materials do not make strong contact, and the molding due to the different thickness portion is reduced.

上記［２］に記載のロール状ラミネート材によれば、異厚み部として樹脂層の一部が除去されて金属箔が露出する金属箔露出部または前記金属箔露出部の形成予定部を有するラミネート材において上記の効果を得られる。   According to the roll-like laminate material described in the above [2], a laminate having a metal foil exposed portion or a planned formation portion of the metal foil exposed portion where a part of the resin layer is removed as the different thickness portion to expose the metal foil. The above effects can be obtained in wood.

上記［３］に記載のロール状ラミネート材によれば、ラミネート材とリボンの巻きずれが起きにくく、安定した形状のロール状物となし得る。   According to the roll-shaped laminate material described in the above [3], it is difficult for the laminate material and the ribbon to be dislocated from each other, and the roll material having a stable shape can be formed.

上記［４］に記載のロール状ラミネート材によれば、主領域における巻きの強さを適正に緩めることができる。   According to the rolled laminate material described in the above [4], the strength of the winding in the main area can be loosened properly.

本発明のロール状ラミネート材に適用するラミネート材の斜視図である。It is a perspective view of a laminate material applied to a roll laminate material of the present invention. 図１Ａにおける１Ｂ−１Ｂ線断面図である。It is the 1B-1B line sectional view in Drawing 1A. 図１Ａのラミネート材の巻き取り工程を模式的に示す図である。It is a figure which shows typically the winding-up process of the laminate material of FIG. 1A. 本発明のロール状ラミネート材の断面図である。It is sectional drawing of the roll-shaped laminate material of this invention. 他のラミネート材の断面図である。It is sectional drawing of another laminate material. さらに他のラミネート材の断面図である。It is sectional drawing of another laminated material. ラミネート材とリボンの他の配置例を示す平面図である。It is a top view which shows the example of another arrangement | positioning of a laminate material and a ribbon.

図１Ａおよび図１Ｂは本発明を適用するラミネート材であり、図２および図３はロール状ラミネート材とその形成方法を示している。図４および図５は他のラミネート材、図６はラミネート材とリボンの他の配置例を示している。これらのラミネート材は蓄電デバイスの外装体として用いられる。   FIGS. 1A and 1B are laminates to which the present invention is applied, and FIGS. 2 and 3 show a roll laminate and a method of forming the same. 4 and 5 show other laminates, and FIG. 6 shows other arrangements of laminates and ribbons. These laminate materials are used as an exterior body of an electricity storage device.

以下の説明において、同一符号を付した部材は同一物または同等物を表しており、重複する説明を省略する。
［ラミネート材］
図１Ａおよび図１Ｂのラミネート材１は、金属箔１１の一方の面に第１接着剤層１２を介してケースの外側層となる耐熱性樹脂層１３が積層されるとともに、前記金属箔層１１の他方の面に第２接着剤層１４を介してケースの内側層となる熱融着性樹脂層１５が積層され、金属箔１１の両面に樹脂層が積層されている。前記第２接着剤層１４には、接着剤が塗布されていない接着剤未塗布部１４ａ形成されている。 In the following description, members given the same reference numerals represent the same or equivalent members, and redundant description will be omitted.
[Laminate material]
The heat-resistant resin layer 13 to be the outer layer of the case is laminated on one side of the metal foil 11 via the first adhesive layer 12 and the metal foil layer 11 of FIG. 1A and FIG. The thermally adhesive resin layer 15 which is to be the inner layer of the case is laminated via the second adhesive layer 14 on the other surface of the metal foil 11, and the resin layers are laminated on both sides of the metal foil 11. The second adhesive layer 14 is formed with an adhesive non-applied portion 14 a where the adhesive is not applied.

前記接着剤未塗布部１４ａでは金属箔１１と熱融着性樹脂層１５とが接着されずに離れており、熱融着性樹脂層１５を容易に剥離できる。即ち、熱融着性樹脂層１５の一部に易剥離部２０が形成されている。このような易剥離部２０が、ラミネート材１のＴＤ方向（Transverse Direction）において１つ形成され、ＭＤ方向（Machine Direction）において所定間隔で繰り返し形成されている。   In the adhesive uncoated portion 14a, the metal foil 11 and the heat fusible resin layer 15 are separated without being adhered to each other, and the heat fusible resin layer 15 can be easily peeled off. That is, the easily peelable portion 20 is formed on a part of the heat fusible resin layer 15. One such easily peelable portion 20 is formed in the TD direction (Transverse Direction) of the laminate 1 and is repeatedly formed at a predetermined interval in the MD direction (Machine Direction).

前記易剥離部２０の直下は空洞であるため、熱融着性樹脂層１５の一部である易剥離部２０が凹んで周囲の接着剤が塗布された部分よりも厚みが薄くなる。従って、前記易剥離部２０が形成された部分は本発明における異厚み部２１に対応する。また、前記ラミネート材１のＴＤ方向において、両端部が耳部２２であり、耳部２２を除く領域が主領域２３である。耳部と主領域に明確な境界はないが、耳部に接着剤未塗布部１４ａによる異厚み部２１は存在しない。   Since the lower portion of the easily peelable portion 20 is hollow, the easily peelable portion 20 which is a part of the heat-fusible resin layer 15 is recessed and thinner than the surrounding portion to which the adhesive is applied. Therefore, the portion where the easily peelable portion 20 is formed corresponds to the different thickness portion 21 in the present invention. Further, in the TD direction of the laminate material 1, the both ends are the ears 22, and the area excluding the ears 22 is the main area 23. Although there is no clear boundary between the ear portion and the main area, there is no uneven thickness portion 21 due to the adhesive non-applied portion 14a in the ear portion.

前記接着剤未塗布部１４ａを有するラミネート材１の製造方法は限定されず、例えば以下の方法で作製することができる。   The method for producing the laminate material 1 having the adhesive uncoated portion 14a is not limited, and can be produced, for example, by the following method.

金属箔１１に、表面に凹凸を有するグラビアロールを用いて接着剤が塗布されない接着剤未塗布部１４ａを形成しながら接着剤を塗布した後、金属箔１１と熱融着性樹脂層１５を貼り合わせてエージング処理する。接着剤の塗布方法はロール塗布のほか、インクジェット方式で未塗布部を形成しつつ接着剤を吹き付け塗布する方法がある。易剥離部の無い耐熱性樹脂層１３は、金属箔１１と耐熱性樹脂層１３の合わせ面の全体に接着剤を塗布して第１接着剤層１２を形成し、これらを貼り合わせる。
［ロール状ラミネート材］
図２および図３に示すように、各層の貼り合わせが完了したラミネート材１は、巻き芯２に巻き取る際に、ＴＤ方向の両端の耳部２２に重なるようにリボン３０を配置し、リボン３０を挟み込みながら巻き取りを行い、リボン３０とともに複数重に巻き付けてロール状ラミネート材３を形成する。 The adhesive is applied to the metal foil 11 while forming the adhesive non-applied portion 14a to which the adhesive is not applied using a gravure roll having irregularities on the surface, and then the metal foil 11 and the heat fusible resin layer 15 are attached Aging treatment together. The application method of the adhesive is not limited to roll coating, and there is a method of spray-coating the adhesive while forming an uncoated portion by an inkjet method. The heat-resistant resin layer 13 having no easily peelable portion is coated with an adhesive on the entire mating surface of the metal foil 11 and the heat-resistant resin layer 13 to form a first adhesive layer 12, and these are bonded.
[Roll-like laminate material]
As shown in FIG. 2 and FIG. 3, when laminating the layers 1 is completed, the ribbon 30 is disposed so as to overlap the ear portions 22 at both ends in the TD direction when winding up on the winding core 2. The roll 30 is wound while being sandwiched, and is wound with a plurality of layers together with the ribbon 30 to form the roll-shaped laminate material 3.

前記ロール状ラミネート材３は、ラミネート材１の耳部２２にリボン３０が挟み込まれたことで両端部の厚みが増して耳高となっている。リボン３０が挟みこまれた耳部２２は強く巻締められているが、リボン３０が挟み込まれていない主領域２３は巻きの締まり具合が緩くなっている。異厚み部２１が形成された主領域２３は緩く巻かれているので、重なり合ったラミネート材１同士が強く接触しておらず、異厚み部２１による型付きが発生しにくく、型付きが低減される。   The thickness of both ends of the roll-shaped laminate material 3 is increased by the ribbon 30 being sandwiched by the ear portions 22 of the laminate material 1, and the height of the rolled laminate material 3 is increased. The ear portion 22 in which the ribbon 30 is sandwiched is tightly wound, but the main region 23 in which the ribbon 30 is not sandwiched is loose in winding tightness. Since the main region 23 in which the different thickness portion 21 is formed is loosely wound, the overlapping laminate materials 1 are not in strong contact with each other, and it is difficult to cause molding by the different thickness portion 21 and molding is reduced. Ru.

なお、図示例のロール状ラミネート材３は、リボン３０がラミネート材１の耳部２２から少しはみ出すように挟み込まれている。この図の示すように、ラミネート材１とリボン３０は厳密に端部を揃える必要はなく、どちらかが外側にはみ出していても不都合はない。
［他のラミネート材］
本発明のラミネート材における異厚み部とは、周囲を厚みの異なる部分に囲まれている部分を意味し、厚みの厚い部分に囲まれた薄い部分、または厚みの薄い部分に囲まれた厚い部分である。ラミネート材はこのような異厚み部をＭＤ方向（巻き付け方向）において繰り返し有している。 The roll-shaped laminate material 3 in the illustrated example is sandwiched so that the ribbon 30 slightly protrudes from the ear portion 22 of the laminate material 1. As shown in this figure, the laminate material 1 and the ribbon 30 do not have to be exactly at the ends, and there is no problem even if one of the laminate material 1 and the ribbon 30 protrude outside.
[Other laminate materials]
The different thickness portion in the laminate material of the present invention means a portion surrounded by a portion having a different thickness, and a thin portion surrounded by a thick portion or a thick portion surrounded by a thin portion It is. The laminate material has such different thickness portions repeatedly in the MD direction (winding direction).

図１Ａのラミネート材１は周囲よりも厚みの薄い異厚み部２１を有している。前記ラミネート１を蓄電デバイスの外装体として使用する場合は、図４に示すように、易剥離部２０を切除して金属箔露出部２４を形成する。この金属箔露出部２４が形成されている部分は周囲よりも厚みの薄い異厚み部２５である。前記易剥離部２１の切除はロール状ラミネート材３を解いて別の巻き芯に巻き取る工程中に連続して行うことがある。金属箔露出部２４を形成後もＭＤ方向において異厚み部２５を繰り返し有するラミネート材であるから、ロール状ラミネート材３からリボン３０とともに別の巻き芯に巻き取るか、あるいは新たにリボンを挟み込みながら巻き取ることによってロール状ラミネート材における型付きの発生を低減することができる。   The laminate material 1 of FIG. 1A has a different thickness portion 21 thinner than the periphery. When the laminate 1 is used as an outer package of a storage device, as shown in FIG. 4, the easily peelable portion 20 is cut away to form a metal foil exposed portion 24. The portion where the metal foil exposed portion 24 is formed is a different thickness portion 25 thinner than the surrounding. The removal of the easily peelable portion 21 may be continuously performed during the process of unwinding the roll-shaped laminate 3 and winding it on another winding core. Since it is a laminate material having different thickness portions 25 repeatedly in the MD direction even after the metal foil exposed portion 24 is formed, it is wound from the roll-shaped laminate material 3 along with the ribbon 30 around another winding core or while sandwiching the ribbon anew By winding up, it is possible to reduce the occurrence of molding in the roll laminate material.

図５のラミネート材４は周囲よりも厚みの厚い異厚み部２６を有している。前記ラミネート材４は、金属箔１１の所要位置に離型剤１６を塗布し、離型剤１６上を含む金属箔１１の全面に接着剤を塗布して第２接着剤層１４を形成し、熱融着性樹脂層１５が貼り合わされている。また、前記金属箔１１と耐熱性樹脂層１３とは、合わせ面の全体に接着剤を塗布して第１接着剤層１２を形成して貼り合わされている。金属箔１１と第２接着剤層１４の間に離型剤１６を介在させることによって熱融着性樹脂層１５と金属箔１１との接合力が弱まり、熱融着性樹脂層１５において熱融着性樹脂層１５の部分除去が容易な易剥離部２７が形成される。前記易剥離部２７が形成されている部分は離型剤１６の厚みが加わわっているので、周囲よりも厚みが厚くなっている。従って、前記易剥離部２７が形成された部分は本発明における異厚み部２６に対応する。   The laminate 4 in FIG. 5 has a different thickness portion 26 thicker than the periphery. The laminating material 4 applies a mold release agent 16 to a required position of the metal foil 11 and applies an adhesive to the entire surface of the metal foil 11 including the mold release agent 16 to form a second adhesive layer 14. The heat fusible resin layer 15 is bonded. The metal foil 11 and the heat-resistant resin layer 13 are bonded by applying an adhesive to the entire mating surface to form a first adhesive layer 12. By interposing the mold release agent 16 between the metal foil 11 and the second adhesive layer 14, the bonding strength between the heat fusible resin layer 15 and the metal foil 11 is weakened, and the heat fusible resin layer 15 thermally melts. An easily peelable portion 27 in which the partial removal of the adhesive resin layer 15 is easy is formed. Since the thickness of the mold release agent 16 is added to the portion where the easily peelable portion 27 is formed, the thickness is thicker than the surroundings. Therefore, the portion where the easily peelable portion 27 is formed corresponds to the different thickness portion 26 in the present invention.

前記ラミネート材４は、厚みの薄い異厚み部２１を有するラミネート材１と同様に、耳部にリボンを挟み込みながら巻き芯に巻き取り、異厚み部２６が形成されている主領域の巻きの強さを緩くすることによって型付きの発生を低減することができる。   The laminate material 4 is wound around the winding core while sandwiching the ribbon in the ear portion as in the case of the laminate material 1 having the thin different thickness portion 21 and the strength of the winding of the main region where the different thickness portion 26 is formed. By loosening the size, the occurrence of mold can be reduced.

また、前記ラミネート材４は、熱融着性樹脂層１５の易剥離部２７の周縁を切断して引っ張ると、第２接着剤層１４および離型材１６が易剥離部２７とともに引っ張られて金属箔１１が露出する。前記易剥離部２７の除去によって金属箔露出部２４が形成され、図１Ａのラミネート材１の易剥離部２１を除去して金属箔露出部２４を形成っしたラミネート材（図４参照）と同じ形態となり、周囲よりも厚みの薄い異厚み部２５を有するラミネート材となる。このラミネート材もまた、リボンを挟み込みながら巻き芯に巻き取ることによって、ロール状ラミネート材における型付きの発生を低減することができる。   When the laminate material 4 is cut and pulled along the periphery of the easy-to-peel portion 27 of the heat-fusible resin layer 15, the second adhesive layer 14 and the release material 16 are pulled together with the easy-to-peel portion 27 and metal foil 11 is exposed. The metal foil exposed portion 24 is formed by removing the easily peelable portion 27, and the same as the laminate material (see FIG. 4) in which the easily peelable portion 21 of the laminate material 1 of FIG. 1A is removed to form the metal foil exposed portion 24. It becomes a form and becomes a laminate material which has the different thickness part 25 thinner than circumference | surroundings. This laminate material can also reduce the occurrence of molding in the roll-like laminate material by winding it around the winding core while sandwiching the ribbon.

また、前記離型剤１６の塗布をシート状の離型材の貼り付けに変えても易剥離部を形成することができる。このような離型材の貼り付けによる易剥離部も周囲よりも厚みが厚くなり、本発明の異厚み部に対応するので、リボンの挟み込みによって型付きの発生を低減することができる。   In addition, even when the application of the release agent 16 is changed to the attachment of a sheet-like release agent, the easily peelable portion can be formed. Since the easy-to-peel part by the adhesion of such a mold release material is also thicker than the surroundings and corresponds to the different-thickness part of the present invention, the occurrence of molding can be reduced by sandwiching the ribbon.

上述したラミネート材１，４の易剥離部２１、２７は、金属箔露出部２４を形成することを前提として樹脂層の一部を容易に剥離できるように加工された部分であり、本発明における金属箔露出部の形成予定部に対応する。   The easily peelable portions 21 and 27 of the laminate materials 1 and 4 described above are portions processed so as to easily peel off a part of the resin layer on the premise that the metal foil exposed portion 24 is formed, and in the present invention It corresponds to the formation planned portion of the metal foil exposed portion.

本発明を適用するラミネート材は、金属箔露出部または金属箔露出部の形成予定部を有するものに限定されない。異厚み部が形成された原因が何であれ、耳部にリボンを挟み込むことによって型付きを低減できる。また、電池ケースには金属箔の両面に樹脂層を有するラミネート材が用いられるが、本発明を適用するラミネート材の用途は限定されず、金属箔の片面のみに樹脂層を有するラミネート材も本発明の技術的範囲に含まれる。また、金属箔の両面に樹脂層を有するラミネート材において、異厚み部は片面に形成されていても両面に形成されていてもよく、異厚み部の形状や数も何ら限定されない。
［ラミネート材およびリボンの材料］
本発明はラミネート材を構成する各層の材料を限定するものではなく、ラミネート材の用途に応じて適宜選択する。以下は、電池ケースの好ましい材料の例である。 The laminate material to which the present invention is applied is not limited to the one having the metal foil exposed portion or the planned formation portion of the metal foil exposed portion. Whatever the cause of the formation of the different thickness portion, the mold can be reduced by sandwiching the ribbon in the ear portion. Moreover, although the laminate material which has a resin layer on both surfaces of metal foil is used for a battery case, the use of the laminate material which applies this invention is not limited, The laminate material which has a resin layer only on one side of metal foil is also this It is included in the technical scope of the invention. In the laminate material having a resin layer on both sides of the metal foil, the different thickness portion may be formed on one side or both sides, and the shape and number of different thickness portions are not limited at all.
[Laminated material and ribbon material]
This invention does not limit the material of each layer which comprises a lamination material, and is suitably selected according to the use of a lamination material. The following are examples of preferred materials for the battery case.

金属箔１１として、アルミニウム箔、ステンレス箔、ニッケル箔、銅箔、チタン箔、これらの金属のクラッド箔を例示でき、さらにはこれらの金属箔にめっきを施しためっき箔を例示できる。また、これらの金属箔に化成皮膜を形成することも好ましい。金属箔１１の厚さは７μｍ〜１５０μｍが好ましい。   Examples of the metal foil 11 include aluminum foil, stainless steel foil, nickel foil, copper foil, titanium foil, and clad foils of these metals, and further, plated foils obtained by plating these metal foils. Moreover, it is also preferable to form a chemical conversion film on these metal foils. The thickness of the metal foil 11 is preferably 7 μm to 150 μm.

耐熱性樹脂層１３を構成する耐熱性樹脂としては、ラミネート材をヒートシールする際のヒートシール温度で溶融しない耐熱性樹脂を用いる。前記耐熱性樹脂としては、熱融着性樹脂層１５を構成する熱可塑性樹脂の融点より１０℃以上高い融点を有する熱可塑性樹脂を用いるのが好ましく、熱可塑性樹脂の融点より２０℃以上高い融点を有する熱可塑性樹脂を用いるのが特に好ましい。例えば、ポリアミドフィルム、ポリエステルフィルム等が挙げられ、これらの延伸フィルムが好ましく用いられる。中でも、成形性および強度の点で、二軸延伸ポリアミドフィルムまたは二軸延伸ポリエステルフィルム、あるいはこれらを含む複層フィルムが特に好ましく、さらに二軸延伸ポリアミドフィルムと二軸延伸ポリエステルフィルムとが貼り合わされた複層フィルムを用いることが好ましい。前記ポリアミドフィルムとしては、特に限定されるものではないが、例えば、６−ポリアミドフィルム、６，６−ポリアミドフィルム、ＭＸＤポリアミドフィルム等が挙げられる。また、二軸延伸ポリエステルフィルムとしては、二軸延伸ポリブチレンテレフタレート（ＰＢＴ）フィルム、二軸延伸ポリエチレンテレフタレート（ＰＥＴ）フィルム等が挙げられる。また、耐熱性樹脂層１３は、単層で形成されていても良いし、あるいは、例えばＰＥＴフィルム／ポリアミドフィルムからなる複層で形成されていても良い。また、厚さは９μｍ〜５０μｍの範囲が好ましい。   As a heat resistant resin which comprises the heat resistant resin layer 13, the heat resistant resin which is not fuse | melted at the heat seal temperature at the time of heat-sealing laminated material is used. As the heat-resistant resin, it is preferable to use a thermoplastic resin having a melting point higher by 10 ° C. or more than the melting point of the thermoplastic resin constituting the heat-fusible resin layer 15, and a melting point higher by 20 ° C. or more than the melting point of the thermoplastic resin It is particularly preferred to use a thermoplastic resin having For example, a polyamide film, a polyester film, etc. are mentioned, These stretched films are used preferably. Among them, in view of moldability and strength, a biaxially stretched polyamide film or a biaxially stretched polyester film, or a multilayer film containing these is particularly preferable, and further, a biaxially stretched polyamide film and a biaxially stretched polyester film are laminated. It is preferred to use a multilayer film. The polyamide film is not particularly limited, and examples thereof include 6-polyamide film, 6,6-polyamide film, and MXD polyamide film. Moreover, a biaxially stretched polybutylene terephthalate (PBT) film, a biaxially stretched polyethylene terephthalate (PET) film, etc. are mentioned as a biaxially stretched polyester film. Further, the heat resistant resin layer 13 may be formed as a single layer, or may be formed as a multilayer formed of, for example, a PET film / polyamide film. The thickness is preferably in the range of 9 μm to 50 μm.

熱融着性樹脂層１５を構成する熱可塑性樹脂としては、耐薬品性および熱封止性の点で、ポリエチレン、ポリプロピレン、オレフィン系共重合体、これらの酸変性物およびアイオノマーで構成されるのが好ましい。また、オレフィン系共重合体として、ＥＶＡ（エチレン・酢酸ビニル共重合体）、ＥＡＡ（エチレン・アクリル酸共重合体）、ＥＭＡＡ（エチレン・メタアクリル酸共重合体）を例示できる。また、ポリアミドフィルム（例えば１２ナイロン）やポリイミドフィルムも使用できる。また、厚さは２０μｍ〜８０μｍの範囲が好ましい。   The thermoplastic resin constituting the heat-fusible resin layer 15 is composed of polyethylene, polypropylene, an olefin copolymer, an acid-modified product thereof and an ionomer in terms of chemical resistance and heat sealing property. Is preferred. Further, as the olefin copolymer, EVA (ethylene-vinyl acetate copolymer), EAA (ethylene-acrylic acid copolymer), and EMAA (ethylene-methacrylic acid copolymer) can be exemplified. Moreover, a polyamide film (for example, 12 nylons) and a polyimide film can also be used. The thickness is preferably in the range of 20 μm to 80 μm.

耐熱性樹脂層１３側の第１接着剤１２としては、例えば、主剤としてのポリエステル樹脂と硬化剤としての多官能イソシアネート化合物とによる二液硬化型ポリエステル−ウレタン系樹脂、あるいはポリエーテル−ウレタン系樹脂を含む接着剤を用いることが好ましい。一方、熱融着性樹脂層１５側の第２接着剤１４としては、例えば、ポリウレタン系接着剤、アクリル系接着剤、エポキシ系接着剤、ポリオレフィン系接着剤、エラストマー系接着剤、フッ素系接着剤等により形成された接着剤が挙げられる。   As the first adhesive 12 on the heat-resistant resin layer 13 side, for example, a two-component curable polyester-urethane resin or polyether-urethane resin made of a polyester resin as a main agent and a polyfunctional isocyanate compound as a curing agent It is preferable to use an adhesive containing On the other hand, as the second adhesive 14 on the heat fusible resin layer 15 side, for example, a polyurethane-based adhesive, an acrylic-based adhesive, an epoxy-based adhesive, a polyolefin-based adhesive, an elastomer-based adhesive, a fluorine-based adhesive And the like.

前記リボン３０は、樹脂やラミネートフィルムであればＪＩＳ Ｋ７１６２−２（２０１４）、紙であればＪＩＳ Ｐ８１１３等で定義されるＭＤ方向の引張伸びが１００％未満の材料で構成されていることが好ましい。引張伸びが１００％未満のリボン３０は巻取り時の厚み変化が抑えられるためラミネート材１に対してずれにくく、巻きずれや巻き緩みが起きにくく、ロール状ラミネート材３の形状を安定させることができる。特に好ましい引張伸びは８０％以下である。引張伸びの条件を満足する材料として、樹脂フィルム、金属箔の両面に樹脂フィルムが積層されたラミネート材、紙を例示できる。樹脂フィルムとしては、硬質ポリ塩化ビニル、ポリスチレン、ＡＢＳ樹脂、高密度ポリエチレン、ポリアセタール、アクリル樹脂）、酢酸セルロース、ポリカーボネート、ポリアミド、ポリエチレンテレフタレート、のフィルムが好ましい。ラミネート材はアルミニウム等の金属箔の両面に上記の樹脂フィルムを積層したものが好ましい。また、紙は無塵紙が好ましい。   The ribbon 30 is preferably made of a material having a tensile elongation of less than 100% in the MD direction defined by JIS K7162-2 (2014) for resin or laminate film, and JIS P8113 for paper. . Since the ribbon 30 having a tensile elongation of less than 100% can suppress the thickness change at the time of winding, it is difficult to be displaced with respect to the laminate material 1, and the winding shift and the winding looseness hardly occur, and the shape of the roll-shaped laminate material 3 can be stabilized. it can. Particularly preferred tensile elongation is 80% or less. Examples of materials that satisfy the tensile elongation conditions include resin films, laminate materials in which resin films are laminated on both sides of metal foil, and paper. As the resin film, a film of rigid polyvinyl chloride, polystyrene, ABS resin, high density polyethylene, polyacetal, acrylic resin), cellulose acetate, polycarbonate, polyamide, polyethylene terephthalate is preferable. The laminating material is preferably one in which the above resin film is laminated on both sides of a metal foil such as aluminum. Also, the paper is preferably dust free.

また、前記リボン３０の厚みは１０μｍ〜２００μｍが好ましい。１０μｍ未満では耳高にして主領域の巻き付けの強さを緩くする効果が小さい。また、厚みが大きい程主領域の巻き付け強さを緩くすることができるが、２００μｍの厚さがあれば十分に型付きが低減されるので、それ以上厚くするには及ばない。特に好ましい厚さは２０μｍ〜１２０μｍである。また、前記リボン３０の幅は１０ｍｍ〜３０ｍｍが好ましい。   Moreover, as for the thickness of the said ribbon 30, 10 micrometers-200 micrometers are preferable. If it is less than 10 μm, the effect of reducing the winding strength of the main area by reducing the ear height is small. Also, the larger the thickness is, the looser the winding strength of the main area, but if the thickness is 200 μm, since the molding is sufficiently reduced, the thickness can not be further increased. The particularly preferred thickness is 20 μm to 120 μm. The width of the ribbon 30 is preferably 10 mm to 30 mm.

また、巻き芯２の材質は何ら限定されず紙や金属管等の周知の巻き芯を使用できる。
［他のリボンの配置］
本発明のロール状ラミネート材は少なくともＴＤ方向の両端部にリボンが挟み込まれており、要すれば主領域内に１本または複数本のリボンを挟み込むことがある。特に原反をスリット加工して複数個のロールに分ける場合は、原反を巻き芯に巻き付ける工程でスリット加工予定位置、且つ異厚み部に重ならない位置にリボンを挟み込み、リボンとともにスリット加工をすることが好ましい。 Further, the material of the winding core 2 is not limited at all, and a known winding core such as paper or metal tube can be used.
[Arrangement of other ribbons]
In the roll-like laminate material of the present invention, the ribbon is sandwiched at least at both ends in the TD direction, and if necessary, one or more ribbons may be sandwiched in the main region. In particular, when the raw fabric is slitted and divided into a plurality of rolls, in the process of winding the raw fabric around a winding core, the ribbon is sandwiched at a slitting planned position and a position not overlapping the different thickness portion and slitted together with the ribbon Is preferred.

図６のラミネート材５は、大小各１個の異厚み部を一組とし、ＴＤ方向に３組の異厚み部２８ａ、２８ｂ、２８ｃが形成され、ＭＤ方向において３組の異厚み部２８ａ、２８ｂ、２８ｃが繰り返し形成されている。前記ラミネート材５は、両端の耳部、異厚み部２８ａと２８ｂの間、異厚み部２８ｂと２８ｃの間の合計４箇所にリボン３０を挟み込んでロール状物（図示省略）となされる。そして、前記ラミネート５を一点鎖線Ｓで示す位置でリボン３０とともにスリット加工して３条に分けて巻き芯に巻き取ると、各スリット加工品の両耳部にリボン３０が挟み込まれ、３つのスリット加工品においても異厚み部２８ａ、２８ｂ、２８ｃによる型付きを低減できる。   In the laminate material 5 of FIG. 6, three different thickness portions 28a, 28b and 28c are formed in the TD direction, with one large and small thickness portion being a pair, and three different thickness portions 28a in the MD direction, 28b and 28c are repeatedly formed. The laminate material 5 is formed into a roll (not shown) by holding the ribbon 30 at a total of four places between the different thickness portions 28a and 28b and the different thickness portions 28b and 28c. Then, when the laminate 5 is slit with the ribbon 30 at the position indicated by the alternate long and short dash line S and divided into three strips and wound around the winding core, the ribbon 30 is sandwiched between the two ear parts of each slit processed product, resulting in three slits. Also in the processed product, it is possible to reduce the molding due to the different thickness portions 28a, 28b and 28c.

なお、スリット加工を行わない場合でも主領域にリボンを挟み込むことがある。幅の広いラミネート材では中央に近い部分は巻き締めの強さを緩める効果が低下するので、主領域にリボンを挟み込むことによって異厚み部による型付きを低減できる。主領域にリボンを挟み込む場合はＭＤ方向において異厚み部が存在しない箇所に配置することが好ましい。   Even when the slit processing is not performed, the ribbon may be inserted in the main area. In the case of a wide laminate material, the effect of loosening the strength of the tightening is reduced near the center, and therefore, by sandwiching the ribbon in the main region, it is possible to reduce the molding due to the different thickness portion. When sandwiching the ribbon in the main area, it is preferable to dispose the ribbon in a place where the different thickness portion does not exist in the MD direction.

本発明は、金属箔露出部または金属箔露出部の形成予定部を有するラミネート材に好適に利用できる。   The present invention can be suitably used for a laminate material having a metal foil exposed portion or a planned formation portion of a metal foil exposed portion.

１、４、５…ラミネート材
２…巻き芯
３…ロール状ラミネート材
１１…金属箔
１３…耐熱性樹脂層
１５…熱融着性樹脂層
２０、２７…易剥離部
２１、２５、２６、２８ａ、２８ｂ、２８ｃ…異厚み部
２２…耳部
２３…主領域
２４…金属箔露出部
３０…リボン
1, 4, 5 ... Laminating material 2 ... Winding core 3 ... Roll-like laminating material 11 ... Metal foil 13 ... Heat resistant resin layer 15 ... Heat fusible resin layer 20, 27 ... Easy peeling portion 21, 25, 26, 28a , 28b, 28c ... different thickness portion 22 ... ear portion 23 ... main region 24 ... metal foil exposed portion 30 ... ribbon

Claims (4)

金属箔と樹脂層が貼り合わされたラミネート材は、ＴＤ方向（Transverse Direction）両端の耳部を除く主領域に、周囲と厚みの異なる異厚み部をＭＤ方向（Machine Direction）に繰り返し有し、
前記ラミネート材が各耳部に重ねられた２本のリボンとともに巻き芯に複数重に巻き付けられ、巻き付けられたラミネート材の間にリボンが挟み込まれていることを特徴とするロール状ラミネート材。 The laminate material in which the metal foil and the resin layer are bonded to each other has, repeatedly in the MD direction (Machine Direction), different thickness portions different in thickness from the periphery in the main region excluding the ear portions at both ends in the TD direction (Transverse Direction)
A roll-shaped laminate material, wherein the laminate material is wound in multiple layers around a winding core together with two ribbons stacked on each ear portion, and the ribbon is sandwiched between the wound laminate materials. 前記異厚み部が、樹脂層の一部が除去されて金属箔が露出する金属箔露出部、または前記金属箔露出部の形成予定部によって形成されている請求項１に記載のロール状ラミネート材。   The roll-shaped laminate material according to claim 1, wherein the different thickness portion is formed by a metal foil exposed portion where a part of the resin layer is removed to expose the metal foil, or a formation planned portion of the metal foil exposed portion. . 前記リボンのＭＤ方向の引張伸びが１００％未満である請求項１または２に記載のロール状ラミネート材。   The roll-like laminate material according to claim 1 or 2, wherein the ribbon has a tensile elongation of less than 100% in the MD direction. 前記リボンの厚みが１０μｍ〜２００μｍである請求項１〜３のうちのいずれか１項に記載のロール状ラミネート材。
The roll-shaped laminate material according to any one of claims 1 to 3, wherein the thickness of the ribbon is 10 μm to 200 μm.
JP2017073704A 2017-04-03 2017-04-03 Roll shape laminating material Pending JP2018177377A (en)

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JP2015174694A (en) * 2014-03-18 2015-10-05 日本電気硝子株式会社 glass film and glass roll
JP2015205504A (en) * 2014-04-07 2015-11-19 昭和電工パッケージング株式会社 Method for producing laminate exterior material

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JP2005144858A (en) * 2003-11-14 2005-06-09 Nitto Denko Corp Method for producing transparent conductive film
JP2014008698A (en) * 2012-06-29 2014-01-20 Dainippon Printing Co Ltd Glass film laminate
JP2015174694A (en) * 2014-03-18 2015-10-05 日本電気硝子株式会社 glass film and glass roll
JP2015205504A (en) * 2014-04-07 2015-11-19 昭和電工パッケージング株式会社 Method for producing laminate exterior material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023127726A1 (en) * 2021-12-27 2023-07-06 株式会社村田製作所 Secondary battery

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