JP2000042021A - Laminated porous base material and throw-away body warmer - Google Patents
Laminated porous base material and throw-away body warmerInfo
- Publication number
- JP2000042021A JP2000042021A JP10229394A JP22939498A JP2000042021A JP 2000042021 A JP2000042021 A JP 2000042021A JP 10229394 A JP10229394 A JP 10229394A JP 22939498 A JP22939498 A JP 22939498A JP 2000042021 A JP2000042021 A JP 2000042021A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- printing
- permeable
- porous film
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の技術分野】本発明は、印刷内容の長期安定性に
優れる通気性の積層多孔基材、及びそれを用いた使捨て
カイロに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-permeable laminated porous substrate having excellent long-term stability of printed contents, and a disposable body warmer using the same.
【０００２】[0002]
【従来の技術】従来、使捨てカイロの収納袋等に用いう
る通気性を有して印刷処理された積層多孔基材として
は、多孔質フィルムと通気性基材を多孔性の粘着層を介
し接着したもの（特開平８−１３１４７２号公報）の外
表面に印刷処理を施したものが知られていた。2. Description of the Related Art Conventionally, as a laminated porous substrate printed with air permeability and usable for a storage bag of a disposable body warmer, a porous film and a gas permeable substrate are interposed through a porous adhesive layer. It has been known that an outer surface of a bonded product (JP-A-8-131472) is subjected to a printing process.
【０００３】前記において印刷による処理は、エンボス
加工や加熱スタンプ加工等による装飾処理では積層多孔
基材を穿孔し、使捨てカイロとした場合に発熱異常の原
因となる貫通孔が発生して低温火傷等を起す場合があ
り、その防止を目的とする。[0003] In the above-described processing, in the case of decorative processing such as embossing or heat stamping, when a laminated porous base material is perforated and a disposable warmer is used, a through-hole causing heat generation abnormalities is generated, resulting in a low-temperature burn. Etc. may occur, and its purpose is to prevent it.
【０００４】しかしながら、従来方式による外表面への
印刷処理では、印刷層が脱落しやすくて使用期間中その
印刷内容を維持することが困難なこと、印刷内容が鮮明
に見えにくいこと、通気性に悪影響して発熱の温度や持
続時間を低下させることなどの問題点があった。However, in the printing process on the outer surface according to the conventional method, it is difficult to maintain the printed contents during the use period because the print layer easily falls off, it is difficult to see the printed contents clearly, and the air permeability is low. There have been problems such as lowering the temperature and duration of heat generation due to adverse effects.
【０００５】すなわち通例、使捨てカイロの収納袋は、
多孔質フィルムを内側、通気性基材を外側として形成さ
れ、その多孔質フィルムの外表面（袋内側）への印刷で
は、発熱体から発生する水蒸気等で印刷インクが剥げや
すく、また印刷内容が呆けて鮮明さを欠きやすく、図柄
等の印刷では通気性を低下させる問題点があった。一
方、通気性基材の外表面（袋外側）への印刷では、擦れ
等による印刷層の脱落が激しく、毛羽立ちによる印刷内
容の呆けも発生しやすい問題点があった。[0005] That is, usually, the storage bag of the disposable body warmer,
It is formed with the porous film inside and the air-permeable base material outside. When printing on the outer surface (the inside of the bag) of the porous film, the printing ink is easily peeled off by water vapor or the like generated from the heating element, and the printed content is poor. There is a problem that the sharpness is easily lost and the air permeability is reduced in printing of a pattern or the like. On the other hand, when printing on the outer surface (outside of the bag) of the air-permeable base material, there is a problem that the printed layer is severely dropped due to rubbing or the like, and the printed contents are apt to be blurred due to fluff.
【０００６】[0006]
【発明の技術的課題】本発明は、印刷層の脱落や呆けが
生じにくく、印刷内容を長期に維持して鮮明に視覚で
き、図柄等の印刷にても通気性を良好に維持して印刷層
がない場合と同様な発熱温度や発熱持続時間を維持する
積層多孔基材及び使捨てカイロを得ることを課題とす
る。SUMMARY OF THE INVENTION The present invention is intended to prevent the print layer from falling off or blurring, to maintain the print contents for a long period of time, to be clearly visible, and to maintain good air permeability even when printing a pattern or the like. It is an object of the present invention to obtain a laminated porous substrate and a disposable body warmer that maintain the same heat generation temperature and heat generation duration as when there is no layer.
【０００７】[0007]
【課題の解決手段】本発明は、多孔質フィルムと通気性
基材を通気性接着層を介し接着してなり、その多孔質フ
ィルムと通気性基材の一方又は両方が前記接着面側に印
刷層を有することを特徴とする積層多孔基材、及びその
積層多孔基材を少なくとも一部に用いた収納袋の内部に
発熱体を収容してなることを特徴とする使捨てカイロを
提供するものである。According to the present invention, a porous film and a gas-permeable substrate are bonded via a gas-permeable adhesive layer, and one or both of the porous film and the gas-permeable substrate are printed on the bonding surface. Provided is a laminated porous substrate characterized by having a layer, and a disposable body warmer characterized by accommodating a heating element inside a storage bag using at least a part of the laminated porous substrate. It is.
【０００８】[0008]
【発明の効果】本発明によれば、印刷層が多孔質フィル
ムや通気性基材に保護されて水蒸気や擦れ等にて脱落や
呆けを生じにくく、印刷内容を長期に維持して鮮明に視
覚でき、図柄等の大面積印刷にても通気性を良好に維持
する積層多孔基材が得られて、印刷層がない場合と同様
な発熱温度や発熱持続時間を維持する使捨てカイロを得
ることができる。According to the present invention, the printing layer is protected by the porous film or the air-permeable base material, so that the printing layer is less likely to fall off or scratch due to water vapor, rubbing, etc., and that the printed content is maintained for a long period of time to provide a clear visual image. It is possible to obtain a laminated porous base material that maintains good air permeability even in large area printing such as designs, and to obtain a disposable warmer that maintains the same heat generation temperature and heat generation duration as when there is no print layer Can be.
【０００９】また前記の通気性基材等による保護機能に
より、基材の積層過程に加えて使捨てカイロ等の製造工
程にても印刷層が保護されてその消失を防止でき、印刷
層維持の信頼性に優れている。さらに繊維堆積層からな
る接着層にて接着処理したものの場合には、接着力や透
湿度安定性や耐熱性にも優れて使捨てカイロとしてもシ
ワや剥離を生じにくく、接着層によるクッション性等に
基づいて風合いにも優れている。The protective function of the air-permeable base material protects the printed layer not only in the lamination process of the base material but also in the manufacturing process of the disposable body warmer and the like, thereby preventing the printed layer from disappearing. Excellent reliability. Furthermore, when the adhesive treatment is performed with an adhesive layer consisting of a fiber deposition layer, the adhesive strength, moisture permeability stability, and heat resistance are excellent, and wrinkles and peeling are unlikely to occur even as a disposable warmer. Excellent texture based on.
【００１０】[0010]
【実施例】本発明による積層多孔基材は、多孔質フィル
ムと通気性基材を通気性接着層を介し接着してなり、そ
の多孔質フィルムと通気性基材の一方又は両方が前記接
着面側に印刷層を有するものからなる。その例を図１に
示した。１が多孔質フィルム、２が通気性接着層、３が
通気性基材、３１が印刷層である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A laminated porous substrate according to the present invention is formed by bonding a porous film and a gas-permeable substrate through a gas-permeable adhesive layer, and one or both of the porous film and the gas-permeable substrate are bonded to the bonding surface. It has a printed layer on the side. An example is shown in FIG. 1 is a porous film, 2 is a permeable adhesive layer, 3 is a permeable substrate, and 31 is a printing layer.
【００１１】積層多孔基材の形成に用いる多孔質フィル
ムや通気性基材については従来の使捨てカイロなどに準
じることができ、特に限定はない。ちなみにその例とし
てはポリエチレン、就中、直鎖状低密度ポリエチレンや
ポリプロピレン等のポリオレフィン系樹脂に炭酸カルシ
ウム等の無機充填材、特に平均粒径が３０μｍ以下のも
のを配合して押出し方式等の適宜な方式にてフィルムと
したものを一軸や二軸等にて延伸処理してなる多孔質フ
ィルム、あるいはポリアミド系繊維やポリエステル系繊
維、ポリプロピレン系繊維等からなる不織布状ないしフ
ェルト状の通気性基材などがあげられる。The porous film and the air-permeable substrate used for forming the laminated porous substrate can be in accordance with a conventional disposable body warmer or the like, and are not particularly limited. Incidentally, examples thereof include polyethylene, especially, polyolefin resins such as linear low-density polyethylene and polypropylene, and inorganic fillers such as calcium carbonate, especially those having an average particle size of 30 μm or less, and extrusion methods and the like. Film formed by a simple method or a uniaxial or biaxial stretching process, or a nonwoven or felt-like air-permeable base made of polyamide fiber, polyester fiber, polypropylene fiber, etc. And so on.
【００１２】使捨てカイロとした場合の通気性による適
度な発熱性などの点より好ましく用いうる多孔質フィル
ムは、０．１〜１０μｍの平均孔径を有して透湿度が１
００〜１５００ｇ／ｍ2・dayのものであり、また好まし
く用いうる通気性基材は、目付（秤量）が１０〜１００
ｇ／ｍ2の不織布である。A porous film which can be preferably used from the viewpoint of appropriate heat generation due to air permeability when used as a disposable body warmer has an average pore diameter of 0.1 to 10 μm and a moisture permeability of 1 to 10.
The air-permeable base material having a weight per unit area of 10 to 100 g / m 2 · day and preferably usable is 10 to 100 g / m 2 · day.
g / m 2 nonwoven fabric.
【００１３】積層多孔基材は、多孔質フィルムと通気性
基材を適宜な通気性接着層を介して接着することにより
形成しうるが、その接着処理に際しては予めその接着面
側に所定の印刷処理を施した多孔質フィルム又は／及び
通気性基材が用いられる。The laminated porous substrate can be formed by adhering the porous film and the air-permeable substrate through an appropriate air-permeable adhesive layer. A treated porous film and / or a gas permeable substrate is used.
【００１４】従って前記の多孔質フィルム又は／及び通
気性基材は、その接着面側に印刷層を有するものである
ことが必要であるが、その印刷処理は接着処理直前まで
の適宜な段階で施すことができる。よって接着工程前の
別工程にて予め印刷処理を施した多孔質フィルム又は／
及び通気性基材を用いてもよいし、接着工程で多孔質フ
ィルム又は／及び通気性基材に印刷処理を施しつつ接着
処理してもよい。Therefore, it is necessary that the porous film and / or the air-permeable substrate have a printed layer on the bonding surface side, and the printing process is performed at an appropriate stage immediately before the bonding process. Can be applied. Therefore, a porous film that has been subjected to a printing process in a separate process before the bonding process or /
A permeable substrate may be used, or the bonding process may be performed while performing a printing process on the porous film or / and the permeable substrate in the bonding step.
【００１５】前記において印刷層は、例えばグラビア方
式やスクリーン方式、フレキソ方式などの任意な方式に
て形成することができる。また印刷インクにも、例えば
水性や油性等の媒体系インク、紫外線硬化型等の硬化型
インクなどの任意なインクを用いうる。In the above, the printing layer can be formed by any method such as a gravure method, a screen method, and a flexo method. Further, as the printing ink, any ink such as a water-based or oil-based medium-based ink, a curable ink such as an ultraviolet curable ink, or the like can be used.
【００１６】さらに印刷内容についても任意であり、例
えば商品名や製造番号や製造者名等の文字、水玉等の模
様やキャラクター図等の図形、バーコード等の記号、文
字や図形や記号等が結合したものなどの適宜な印刷内容
であってよい。なお印刷層は、視認性などの点より着色
層からなること、就中、多孔質フィルム又は／及び通気
性基材に対してコントラストに優れる着色層からなるこ
とが一般的であるが、これに限定されない。Further, the contents of printing are also optional. For example, characters such as product names, serial numbers, and manufacturer names, patterns such as polka dots, figures such as character figures, symbols such as bar codes, characters, figures and symbols are used. Appropriate printed content such as a combination may be used. Note that the printing layer is generally formed of a colored layer from the viewpoint of visibility and the like. In particular, it is generally formed of a colored layer excellent in contrast to a porous film or / and a breathable substrate. Not limited.
【００１７】印刷層は、上記の如く多孔質フィルムと通
気性基材の一方又は両方に設けることができる。多孔質
フィルムの接着面側に印刷層を設けてなる積層多孔基材
をその多孔質フィルムが収納袋の内側となるように使捨
てカイロ等を形成した場合にても、通気性基材と通気性
接着層を介して多孔質フィルム上の印刷内容を良好に判
読可能に視認することができる。前記使捨てカイロ等と
した場合の印刷内容の鮮明な視認性などの点よりは、通
気性基材の接着面側に印刷層を設けることが好ましい。The printing layer can be provided on one or both of the porous film and the air-permeable substrate as described above. Even if a disposable body warmer or the like is formed on a laminated porous substrate having a printed layer provided on the adhesive surface side of the porous film such that the porous film is inside the storage bag, the air-permeable base material and The printed content on the porous film can be visually recognized in an easily legible manner via the conductive adhesive layer. It is preferable to provide a printing layer on the bonding surface side of the air-permeable base material, from the viewpoint of clear visibility of the printed content when the disposable white body or the like is used.
【００１８】多孔質フィルムと通気性基材を接着するた
めの通気性接着層は、パターン塗工の接着層やホットメ
ルト型の多孔質接着フィルムなどの、通気性を示す適宜
な接着層にて形成しうる。孔の微細性や均等分布等によ
り通気性や接着力に偏りが少なく、風合いにも優れる接
着処理の点などよりは、接着性物質を繊維化して不織布
状、ないし絡まり繊維状等に堆積させてなる接着層を介
した接着処理が好ましい。The air-permeable adhesive layer for adhering the porous film and the air-permeable base material is made of an appropriate air-permeable adhesive layer such as a pattern-coated adhesive layer or a hot-melt type porous adhesive film. Can be formed. Less unevenness in air permeability and adhesive strength due to fineness and uniform distribution of pores, etc. Adhesion treatment via an adhesive layer is preferred.
【００１９】かかる通気性接着層の形成は、例えば接着
性物質を加熱溶融下に熱風を介し吹付け展開する、図２
に例示したカーテンスプレ方式やメルトブロー方式やス
ロットスプレ方式などの適宜な方式で接着性物質４を繊
維化して多孔質フィルムや通気性基材やセパレータ等か
らなる適宜な支持基材上に展開堆積させ、多孔状態の接
着層２とする方法などの、接着性物質を適宜な方式で繊
維化してそれを多孔状態に配置する適宜な方法にて行う
ことができる。接着性物質を加熱溶融下に繊維状とする
ことで臭気が揮散して微臭性にも優れるものとなる。In order to form such a gas-permeable adhesive layer, for example, the adhesive substance is sprayed and developed through hot air while being heated and melted.
The adhesive substance 4 is made into a fiber by an appropriate method such as a curtain spray method, a melt blow method, or a slot spray method, and is developed and deposited on an appropriate supporting substrate made of a porous film, a gas-permeable substrate, a separator, or the like. It can be performed by an appropriate method of forming an adhesive substance into fibers by an appropriate method and disposing it in a porous state, such as a method of forming the adhesive layer 2 in a porous state. By forming the adhesive substance into a fibrous form while being heated and melted, the odor is volatilized and the odor is excellent.
【００２０】なお前記図例のカーテンスプレ方式による
方法においては、印刷層３１を有する通気性基材３を巻
取ロール３２より順次繰出しつつ、密閉容器中の接着性
物質４を加熱溶融させてダイス５に供給し、矢印の如く
ダイス上方より熱風を吹込むことで溶融した接着性物質
がスプレーヘッド５１より繊維化４１されてカーテン状
に吹出され、それがコンベア６を介し順次移動する前記
通気性基材３の印刷層３１の上に展開塗布され、その繊
維が堆積してなる不織布状の多孔構造を有する接着層２
が形成され、その上に巻取ロール１１より順次繰出され
る多孔質フィルム１が配置されてピンチロール６１を介
し接着処理されて巻取ロール７１に巻取られ、一連の同
じ工程で目的の積層多孔基材７が形成される。In the curtain spray method shown in FIG. 1, the adhesive material 4 in the closed container is heated and melted while the air-permeable base material 3 having the printing layer 31 is sequentially fed out from the winding roll 32. 5 is blown from above the dice as indicated by an arrow, and the melted adhesive substance is fibrillated 41 by a spray head 51 and blown out in the form of a curtain. Adhesive layer 2 having a non-woven porous structure formed by spreading and applying the fiber on printed layer 31 of substrate 3
Is formed thereon, and the porous film 1 sequentially fed from the winding roll 11 is disposed thereon, and is adhered through a pinch roll 61 and wound up on a winding roll 71. The porous substrate 7 is formed.
【００２１】接着力と通気性のバランスなどの点より好
ましい通気性接着層は、その接着層を形成する繊維の平
均径が０．１μm〜１mm、就中０．５〜１００μm、特に
１〜５０μmであり、かかる平均径の繊維が坪量１００
ｇ／ｍ2以下、就中１〜３０ｇ／ｍ2、特に２〜１０ｇ／
ｍ2の割合で不織布状ないし絡まり繊維状ないし蜘蛛の
巣状の多孔構造に堆積したものである。なお前記の平均
繊維径は、例えば走査顕微鏡で通気性接着層をランダム
に写真を採り、その任意な１０点における繊維径の平均
値を算出する方法などにより求めることができる。The air-permeable adhesive layer, which is preferable from the viewpoint of the balance between the adhesive strength and the air permeability, has an average diameter of the fibers forming the adhesive layer of 0.1 μm to 1 mm, preferably 0.5 to 100 μm, particularly 1 to 50 μm. And the fiber having such an average diameter is 100 basis weight.
g / m 2 or less, especially 1 to 30 g / m 2 , particularly 2 to 10 g / m 2
It is deposited on a nonwoven fabric, entangled fiber, or spider web porous structure at a rate of m 2 . The average fiber diameter can be determined by, for example, a method of randomly taking a photograph of the air-permeable adhesive layer with a scanning microscope and calculating the average value of the fiber diameters at arbitrary 10 points.
【００２２】積層多孔基材の形成は、上記した図２の方
法の如く、多孔質フィルム又は／及び通気性基材の上に
通気性接着層を形成してそれらをラミネートする方式、
あるいはセパレータ上に形成した通気性接着層を多孔質
フィルム又は／及び通気性基材の接着面に移着し、その
移着層を介してラミネートする方式などの適宜な方式に
て行うことができる。なお多孔質フィルムや通気性基材
の接着面には、接着力の向上等を目的にコロナ処理やプ
ラズマ処理、スパッタエッチング処理や下塗剤等による
アンカー処理などの適宜な処理を必要に応じ施すことも
できる。The laminated porous substrate is formed by a method of forming a gas-permeable adhesive layer on a porous film and / or a gas-permeable substrate and laminating them, as in the method of FIG.
Alternatively, it can be carried out by an appropriate method such as a method in which a gas-permeable adhesive layer formed on a separator is transferred to the bonding surface of a porous film or / and a gas-permeable base material, and laminated via the transfer layer. . Appropriate treatment such as corona treatment, plasma treatment, sputter etching treatment, or anchor treatment with a primer or the like may be applied to the adhesion surface of the porous film or the air-permeable base material as necessary for the purpose of improving the adhesive strength. Can also.
【００２３】前記の繊維を形成するための接着性物質と
しては、例えばホットメルト型の粘着剤ないし接着剤の
如く、加熱溶融できて常温又は加熱溶融時もしくはその
加熱溶融物の繊維化時に粘着性を示すもの、あるいは形
成した繊維の再加熱で接着性を示すものなどの適宜なも
のを用いうる。As the adhesive substance for forming the fibers, for example, a hot-melt type adhesive or adhesive such as a hot-melt adhesive or an adhesive can be used at room temperature or at the time of heat-melting or at the time of heat-melting into a fibrous material. Or an appropriate one such as one showing adhesiveness by reheating the formed fiber.
【００２４】ちなみに前記接着性物質の例としては、Ｓ
ＩＳやＳＢＳ、ＳＥＢＳやＳＩＰＳの如きスチレン系エ
ラストマ、ポリエチレン、特に超低密度ポリエチレンや
ポリプロピレン、エチレン・酢酸ビニル共重合体の如き
オレフィン系ポリマー、アクリル酸やメタクリル酸等の
アルキルエステルを成分とするアクリル系ポリマー、ポ
リエステル系やポリアミド系やウレタン系等の熱可塑性
樹脂などを成分とするものがあげられる。Incidentally, examples of the adhesive substance include S
Styrene-based elastomers such as IS, SBS, SEBS and SIPS, polyethylene, especially ultra-low-density polyethylene and polypropylene, olefin-based polymers such as ethylene-vinyl acetate copolymer, and acrylics containing alkyl esters such as acrylic acid and methacrylic acid. And those containing a thermoplastic resin such as a polyester polymer, a polyester resin, a polyamide resin or a urethane resin as a component.
【００２５】就中、多孔質フィルムの孔を閉塞して通気
性を低下させやすい経日変化による低分子量成分の滲み
だし等を生じにくくて保存安定性に優れ、また袋作製時
の輻射熱やカイロ使用時の発熱等で多孔質フィルムと通
気性基材の間にシワの生じることを防止しうる耐熱性な
どの点より好ましく用いうる接着性物質は、ホットメル
ト型のポリアミド系共重合体や反応型ポリウレタンを成
分とするものである。In particular, it is difficult to cause bleeding of low molecular weight components due to aging over time because the pores of the porous film are easily blocked and air permeability is reduced, and the storage stability is excellent. Adhesive substances that can be preferably used from the viewpoint of heat resistance and the like that can prevent wrinkles between the porous film and the air-permeable substrate due to heat generation during use are hot-melt type polyamide-based copolymers and Mold polyurethane is used as a component.
【００２６】接着性物質は、１種又は２種以上をブレン
ドして用いうる。また接着性物質の調製に際しては、溶
融粘度や動的弾性率、接着特性等の調節などを目的に必
要に応じて接着性付与剤や軟化剤、老化防止剤などの適
宜な添加剤を配合することができる。ちなみにスチレン
系エラストマにオレフィン系ポリマーを加えることでタ
ックや強度を調節することができる。The adhesive substance may be used alone or in combination of two or more. In addition, in preparing the adhesive substance, an appropriate additive such as an adhesiveness-imparting agent, a softening agent, or an antioxidant is blended as needed for the purpose of adjusting the melt viscosity, the dynamic elastic modulus, the adhesive properties, and the like. be able to. Incidentally, tackiness and strength can be adjusted by adding an olefin-based polymer to the styrene-based elastomer.
【００２７】なお前記の接着性付与剤としては、例えば
スチレン系樹脂やロジン系樹脂、石油系樹脂やテルペン
系樹脂、あるいはそれらの水添物、ないし部分水添物な
どの適宜なものを１種又は２種以上用いることができ
る。また軟化剤としても、例えばパラフィン類やポリブ
テン、ポリイソブチレンやテルペン系等のオイル、ある
いはそれらの水添物、ないし部分水添物などの適宜なも
のを１種又は２種以上用いることができる。As the above-mentioned adhesiveness-imparting agent, for example, styrene-based resin, rosin-based resin, petroleum-based resin, terpene-based resin, or a hydrogenated or partially hydrogenated product thereof may be used. Alternatively, two or more kinds can be used. As the softening agent, for example, one or more suitable oils such as paraffins, polybutene, polyisobutylene, terpene-based oils, and hydrogenated or partially hydrogenated products thereof can be used.
【００２８】本発明においてホットメルトアプリケータ
を介した塗布時における流動やズレを防止した繊維状態
の維持性や多孔質フィルムの目詰り防止、均一繊維の形
成性などの点より好ましく用いうる接着性物質は、溶融
粘度、殊に９０〜２５０℃でのそれが１５００ポイズ以
下、就中２０〜５００ポイズ、特に５０〜２００ポイズ
となるように調製したものである。In the present invention, the adhesiveness which can be preferably used from the viewpoint of maintaining the fiber state in which flow and deviation are prevented during application through a hot melt applicator, preventing clogging of a porous film, and forming uniform fibers. The material is prepared in such a way that its melt viscosity, especially at 90-250 ° C., is below 1500 poise, preferably between 20 and 500 poise, especially between 50 and 200 poise.
【００２９】なお本発明による積層多孔基材を形成する
多孔質フィルムや通気性基材や通気性接着層には、抗菌
作用による衛生性の向上などを目的に必要に応じて抗菌
剤を配合することもできる。An antibacterial agent is added to the porous film, the permeable substrate and the permeable adhesive layer forming the laminated porous substrate according to the present invention, if necessary, for the purpose of improving hygiene by the antibacterial action. You can also.
【００３０】本発明による積層多孔基材は、例えば使捨
てカイロの収納袋などの如く通気性を有することが求め
られる各種の用途に好ましく用いることができる。その
使捨てカイロの例を図３に示した。これは、発熱体収容
用基材８におけるヒートシール層８１と積層多孔基材７
の多孔質フィルム１の周縁をヒートシール８２してなる
収納袋の発熱体収容用基材８と積層多孔基材７との間の
空隙内に発熱体９を収容して封入処理したものからな
る。なお８３は、衣類等に接着するための粘着層、８４
はそれを仮着保護するセパレータである。The laminated porous substrate according to the present invention can be preferably used for various applications requiring air permeability, such as a storage bag for disposable warmers. An example of the disposable body warmer is shown in FIG. This is because the heat sealing layer 81 and the laminated porous substrate 7
The heat generating element 9 is accommodated in the space between the heat generating element storing base material 8 and the laminated porous base material 7 of the storage bag formed by heat sealing the peripheral edge of the porous film 1 and sealed. . 83 is an adhesive layer for adhering to clothing or the like;
Is a separator that temporarily protects it.
【００３１】前記の収容袋は、ヒートシール方式のほ
か、例えば接着剤や縫製加工等の適宜な方式にて基材の
端部を結合して袋体を形成する方法などの従来に準じた
適宜な方法にて形成でき、その場合に本発明による使捨
てカイロは、その収容袋に本発明による積層多孔基材を
通気性を目的に少なくとも一部に用いたものであればよ
い。従ってその使用箇所は、収納袋の全面や片面、ある
いはそれらの一部などの適宜な箇所とすることができ
る。In addition to the heat sealing method, the above-mentioned storage bag may be appropriately formed according to a conventional method such as a method of forming the bag body by joining the ends of the base material by an appropriate method such as an adhesive or sewing. In this case, the disposable body warmer according to the present invention may be any one in which the laminated porous substrate according to the present invention is used at least in part for the purpose of breathability in its storage bag. Therefore, the use location can be an appropriate location such as the entire surface or one surface of the storage bag, or a part thereof.
【００３２】また袋に収納する発熱体についても、例え
ば金属粉や水、保水剤や酸化促進剤等からなる通気発熱
性組成物の如く、収納袋の通気性に基づいて取り込んだ
酸素（空気）との接触で発熱するものなどの適宜なもの
を用いることができ、従来の使捨てカイロにおける発熱
体のいずれも用いうる。The heating element to be stored in the bag is also oxygen (air) taken in based on the gas permeability of the storage bag, such as a gas-flowable heat-generating composition composed of metal powder, water, a water retention agent, an oxidation promoter and the like. Any suitable heating element such as one that generates heat upon contact with the heating element can be used, and any heating element in a conventional disposable body warmer can be used.
【００３３】[0033]
【実施例】実施例１ 目付４０ｇ／ｍ2のポリアミド系不織布の上に施した紫
外線硬化インクによる水玉模様からなる印刷層の上に、
アプリケータータンク内にて１８０℃で溶融したポリア
ミド系ホットメルト接着剤（溶融粘度１００ポイズ）を
カーテンスプレ方式で繊維化して展開堆積させ、坪量７
ｇ／ｍ2の不織布状の通気性接着層を形成しつつ、その
上に多孔質フィルムをラミネートして積層多孔基材を連
続的に形成した。Example 1 On a printing layer consisting of a polka dot pattern made of an ultraviolet curable ink applied on a polyamide nonwoven fabric having a basis weight of 40 g / m 2 ,
A polyamide hot melt adhesive (melt viscosity: 100 poises) melted at 180 ° C. in an applicator tank is fiberized by a curtain spray method and developed and deposited.
While forming a non-woven air-permeable adhesive layer of g / m 2 , a porous film was laminated thereon to form a laminated porous substrate continuously.
【００３４】なお前記において、通気性接着層における
平均繊維径は、約１０μmであった。また多孔質フィル
ムは、直鎖状低密度ポリエチレン１００重量部に炭酸カ
ルシウム１２０重量部を配合したものを同じ製造ライン
上で押出し成形してフィルムとし、それを一軸で４倍に
延伸処理しつつラミネートしたものであり、平均孔径
０．５μm、透湿度６００ｇ／ｍ2・dayのものである。In the above, the average fiber diameter in the air-permeable adhesive layer was about 10 μm. The porous film is formed by extruding a mixture of 100 parts by weight of linear low-density polyethylene and 120 parts by weight of calcium carbonate on the same production line to form a film, which is uniaxially stretched four times and laminated. The average pore diameter was 0.5 μm and the moisture permeability was 600 g / m 2 · day.
【００３５】比較例 印刷層が積層体の外側となるようにポリアミド系不織布
を用いたほかは実施例１に準じて積層多孔基材を得た。Comparative Example A laminated porous substrate was obtained in the same manner as in Example 1 except that a polyamide-based nonwoven fabric was used so that the printed layer was on the outside of the laminate.
【００３６】評価試験 実施例、比較例で得た積層多孔基材について、印刷層の
有無による通気性の変化を調べると共に、図３に準じた
使捨てカイロを形成してその水玉模様の製造時の鮮明
度、及びカイロ実用時における鮮明度の変化を調べ、実
用性の総合評価を行った。Evaluation Test With respect to the laminated porous substrates obtained in Examples and Comparative Examples, changes in air permeability due to the presence or absence of a printed layer were examined, and a disposable body warmer according to FIG. And the change in the sharpness during the practical use of the Cairo were examined, and a comprehensive evaluation of the practicality was performed.
【００３７】前記の結果を次表に示した。 The results are shown in the following table.
【図１】積層多孔基材例の断面図FIG. 1 is a cross-sectional view of an example of a laminated porous substrate.
【図２】製造工程例の説明図FIG. 2 is an explanatory view of an example of a manufacturing process.
【図３】使捨てカイロ例の断面図FIG. 3 is a sectional view of an example of a disposable body warmer.
７：積層多孔基材 １：多孔質フィルム ２：通気性接着層 ３：通気性基材 ３１：印刷層 ９：発熱体 7: laminated porous substrate 1: porous film 2: air-permeable adhesive layer 3: air-permeable substrate 31: printed layer 9: heating element
───────────────────────────────────────────────────── フロントページの続き (72)発明者 谷知 敏雅 大阪府茨木市下穂積１丁目１番２号 日東 電工株式会社内 Ｆターム(参考） 4C099 AA01 CA07 CA09 CA11 EA08 GA03 JA03 JA04 LA01 LA05 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshimasa Tachi, 1-2-1, Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Corporation F-term (reference) 4C099 AA01 CA07 CA09 CA11 EA08 GA03 JA03 JA04 LA01 LA05
Claims (5)
着層を介し接着してなり、その多孔質フィルムと通気性
基材の一方又は両方が前記接着面側に印刷層を有するこ
とを特徴とする積層多孔基材。1. A method in which a porous film and a gas-permeable substrate are adhered to each other via a gas-permeable adhesive layer, and one or both of the porous film and the gas-permeable substrate have a printing layer on the adhesive surface side. Characterized laminated porous substrate.
からなり、それに印刷層を有する積層多孔基材。2. The laminated porous substrate according to claim 1, wherein the air-permeable substrate is made of a nonwoven fabric and has a printed layer thereon.
が１〜５０μm径の繊維の坪量１〜３０ｇ／ｍ2の堆積層
からなり、多孔質フィルムが０．１〜１０μmの平均孔
径を有して透湿度１００〜１５００ｇ／ｍ2・dayのもの
である積層多孔基材。3. The air-permeable adhesive layer according to claim 1, wherein the air-permeable adhesive layer comprises a deposited layer having a basis weight of 1 to 30 g / m 2 of fibers having a diameter of 1 to 50 μm, and the porous film has an average pore diameter of 0.1 to 10 μm. A laminated porous substrate having a moisture permeability of 100 to 1500 g / m 2 · day.
図形、記号又はそれらの結合の着色層からなる積層多孔
基材。4. The printing method according to claim 1, wherein the printing layer is a character,
A laminated porous substrate comprising a colored layer of figures, symbols or a combination thereof.
なくとも一部に用いた収納袋の内部に発熱体を収容して
なることを特徴とする使捨てカイロ。5. A disposable body warmer wherein a heating element is housed inside a storage bag using at least a part of the laminated porous base material according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10229394A JP2000042021A (en) | 1998-07-30 | 1998-07-30 | Laminated porous base material and throw-away body warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10229394A JP2000042021A (en) | 1998-07-30 | 1998-07-30 | Laminated porous base material and throw-away body warmer |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008000896A Division JP4468457B2 (en) | 2008-01-08 | 2008-01-08 | Laminated porous substrate and disposable cairo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000042021A true JP2000042021A (en) | 2000-02-15 |
Family
ID=16891523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10229394A Pending JP2000042021A (en) | 1998-07-30 | 1998-07-30 | Laminated porous base material and throw-away body warmer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000042021A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1994915A1 (en) | 2007-05-21 | 2008-11-26 | Nitto Lifetec Corporation | Disposable warmer and bag member for the same |
| JP2011051242A (en) * | 2009-09-02 | 2011-03-17 | Nitto Lifetech Kk | Porous packaging material and disposable pocket warmer |
| CN113476207A (en) * | 2021-08-13 | 2021-10-08 | 袁洪 | Improved cold and hot intelligent eye and brain protection instrument and manufacturing method thereof |
-
1998
- 1998-07-30 JP JP10229394A patent/JP2000042021A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1994915A1 (en) | 2007-05-21 | 2008-11-26 | Nitto Lifetec Corporation | Disposable warmer and bag member for the same |
| US7950385B2 (en) | 2007-05-21 | 2011-05-31 | Nitto Lifetec Corporation | Disposable warmer and bag member for the same |
| JP2011051242A (en) * | 2009-09-02 | 2011-03-17 | Nitto Lifetech Kk | Porous packaging material and disposable pocket warmer |
| CN113476207A (en) * | 2021-08-13 | 2021-10-08 | 袁洪 | Improved cold and hot intelligent eye and brain protection instrument and manufacturing method thereof |
| CN113476207B (en) * | 2021-08-13 | 2023-03-24 | 袁洪 | Improved cold and hot intelligent eye and brain protection instrument and manufacturing method thereof |
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