JP3514951B2 - Porous packaging material and its storage bag - Google Patents
Porous packaging material and its storage bagInfo
- Publication number
- JP3514951B2 JP3514951B2 JP16333397A JP16333397A JP3514951B2 JP 3514951 B2 JP3514951 B2 JP 3514951B2 JP 16333397 A JP16333397 A JP 16333397A JP 16333397 A JP16333397 A JP 16333397A JP 3514951 B2 JP3514951 B2 JP 3514951B2
- Authority
- JP
- Japan
- Prior art keywords
- porous
- polyamide
- packaging material
- adhesive layer
- adhesive
- 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.)
- Expired - Fee Related
Links
Landscapes
- Thermotherapy And Cooling Therapy Devices (AREA)
- Laminated Bodies (AREA)
- Bag Frames (AREA)
Description
【０００１】[0001]
【発明の技術分野】本発明は、通気の均等性、保存安定
性、耐熱性に優れる多孔質包装材、及びそれを用いた通
気発熱性組成物の収容袋に関する。TECHNICAL FIELD The present invention relates to a porous packaging material having excellent ventilation uniformity, storage stability, and heat resistance, and a bag for containing a ventilation and exothermic composition using the same.
【０００２】[0002]
【従来の技術】多孔質フィルムと通気性基材を接着剤を
介し接着してなる多孔質包装材が提案されている。かか
る包装材は、それで袋を形成し、その袋に金属粉や水、
保水剤や酸化促進剤等からなる通気発熱性組成物を収容
して使い捨てカイロ等の製造に用いられる。前記のカイ
ロは、当該包装材からなる袋の通気性に基づいて空気を
取り込み、その発熱性組成物が酸素と接触することで発
熱するため点火が不要な利点などを有している。2. Description of the Related Art A porous wrapping material has been proposed in which a porous film and a breathable base material are adhered to each other with an adhesive. Such packaging material forms a bag with it, and metal powder, water,
It is used for the production of disposable body warmers, etc., containing an aerated and exothermic composition composed of a water retention agent, an oxidation promoter and the like. The body warmer has the advantage that it does not require ignition because it takes in air based on the air permeability of the bag made of the packaging material and its exothermic composition makes contact with oxygen to generate heat.
【０００３】従来、前記の多孔質包装材としては、スチ
レン系エラストマやエチレン・酢酸ビニル系共重合体か
らなる粘着性物質を繊維化して形成した多孔性粘着層を
介してオレフィン系多孔質フィルムと通気性基材を接着
処理したものが知られていた（特開平８−１３１４７２
号公報）。Conventionally, as the above-mentioned porous packaging material, an olefin-based porous film is provided through a porous adhesive layer formed by fibrating an adhesive substance composed of a styrene elastomer or an ethylene / vinyl acetate copolymer. It is known that an air-permeable base material is subjected to an adhesive treatment (Japanese Patent Laid-Open No. 8-131472).
Issue).
【０００４】しかしながら、粘着性物質の経日変化、特
に低分子量成分の滲みだし等の経日変化により多孔質フ
ィルムの孔が閉塞されるなどして通気性ないし透湿度が
低下しやすく保存安定性に乏しいこと、また高温で軟化
しやすく凝集力の不足で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が
発生するなどの耐熱性に乏しいこと等の問題点があっ
た。[0004] However, the storage stability is apt to decrease the air permeability or moisture permeability due to the pores of the porous film being clogged due to the aging of the adhesive substance, particularly the leaching of low molecular weight components, etc. It is poor in heat resistance such as wrinkling between the porous film and the breathable substrate due to radiant heat during bag making or heat generation during use of a warmer due to lack of cohesive force that easily softens at high temperature There were problems such as.
【０００５】[0005]
【発明の技術的課題】本発明は、多孔質フィルムと通気
性基材との接着力に優れて剥がれにくく、通気性のバラ
ツキが少なくて風合いにも優れ、透湿度等が経日変化し
にくくて保存安定性に優れると共に、耐熱性にも優れて
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が発生しにくい多孔質包装
材の開発を課題とする。Technical Problem of the Invention The present invention has an excellent adhesive force between a porous film and a breathable base material and is resistant to peeling, has little variation in breathability and is excellent in texture, and is resistant to daily changes in moisture permeability and the like. In addition to excellent storage stability, it also has excellent heat resistance, and we are developing a porous packaging material that is less likely to wrinkle between the porous film and the breathable substrate due to radiant heat during bag production and heat generated during use of body warmers. It is an issue.
【０００６】[0006]
【課題の解決手段】本発明は、ホットメルト型のポリア
ミド系共重合体を成分とする接着性物質を繊維化して形
成した多孔性接着層を介してオレフィン系多孔質フィル
ムと通気性基材とを接着してなり、前記のポリアミド系
共重合体が二塩基酸とアミン類を重合成分とする融点７
０〜１２０℃のものであることを特徴とする多孔質包装
材、及びかかる包装材を少なくともその一部に用いて袋
体を形成したことを特徴とする通気発熱性組成物の収容
袋を提供するものである。The present invention relates to an olefin-based porous film and a gas permeable substrate through a porous adhesive layer formed by fiberizing an adhesive substance containing a hot-melt type polyamide copolymer as a component. Na by bonding is, the polyamide of
The copolymer has a dibasic acid and amines as the polymerization components and has a melting point of 7
Porous wrapping material, characterized in der Rukoto things 0 to 120 ° C., and the container bag breathable exothermic composition characterized by forming a bag with such a packaging material at least a portion thereof It is provided.
【０００７】[0007]
【発明の効果】本発明の多孔質包装材によれば、多孔質
フィルムと通気性基材が具備する通気性等の素材性能を
高度に維持したラミネート体が得られ、しかもそのラミ
ネート体が接着力、保存安定性、耐熱性に優れて使い捨
てカイロ等の収容袋として実用しても剥離や透湿度等の
低下やシワを発生することがなく、多孔性接着層のクッ
ション性等に基づいて風合いにも優れている。さらに多
孔性接着層は加熱溶融による臭気揮散で微臭性にも優
れ、従ってその多孔質包装材は不快な臭いを発しにくい
利点なども有している。EFFECTS OF THE INVENTION According to the porous packaging material of the present invention, it is possible to obtain a laminate having a high level of material performance such as air permeability provided by the porous film and the air permeable base material, and the laminate is bonded. It has excellent strength, storage stability, and heat resistance, and does not cause peeling, deterioration of moisture permeability, or wrinkles even when used as a bag for storing disposable body warmers, etc., and has a texture based on the cushioning property of the porous adhesive layer. Is also excellent. Further, the porous adhesive layer has an excellent odor due to odor volatilization due to heating and melting, and therefore the porous packaging material has an advantage that it does not easily give off an unpleasant odor.
【０００８】[0008]
【発明の実施形態】本発明の多孔質包装材は、二塩基酸
とアミン類を重合成分とし、融点が７０〜１２０℃であ
るホットメルト型のポリアミド系共重合体を成分とする
接着性物質を繊維化して形成した多孔性接着層を介して
オレフィン系多孔質フィルムと通気性基材とを接着した
ものからなる。その例を図１に示した。１がオレフィン
系多孔質フィルム、２が多孔性接着層、３が通気性基材
である。BEST MODE FOR CARRYING OUT THE INVENTION The porous packaging material of the present invention is a dibasic acid.
And amines as a polymerization component, and the melting point is 70 to 120 ° C.
The hot-melt type polyamide-based copolymer is used as a component to bond the olefin-based porous film and the air-permeable base material through a porous adhesive layer formed by fiberizing the adhesive. An example thereof is shown in FIG. 1 is an olefin-based porous film, 2 is a porous adhesive layer, and 3 is a breathable substrate.
【０００９】前記多孔性接着層の形成は、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
例示したメルトブロー方式やカーテンスプレ方式などの
適宜な方式で接着性物質４を繊維化し、それをセパレー
タ６の上に展開堆積させて多孔状態の接着層２を形成す
る方法などの、接着性物質を適宜な方式で繊維化してそ
れを展開塗布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に展開することで臭気が
揮散して微臭性に優れるものとなる。The porous adhesive layer is formed by an appropriate method such as a melt-blowing method or a curtain spray method illustrated in FIG. 2 in which the adhesive material is blown and developed while being heated and melted through hot air. Is made into a fiber and is spread and deposited on the separator 6 to form the adhesive layer 2 in a porous state. The adhesive material is made into a fiber by an appropriate method and spread and applied by an appropriate method. be able to. By developing the adhesive substance into a fibrous state while being heated and melted, the odor is volatilized and the odor becomes excellent.
【００１０】なお図例のメルトブロー方式による方法に
おいては、チップ状や顆粒状等の通気可能な状態で接着
性物質４をダイス５に収容し、その接着性物質をダイス
を介し加熱して部分的に溶融させると共に、ダイスの上
方より矢印の如く熱風を吹込むことにより接着性物質の
溶融分がダイス孔５１より繊維状４１で吹出され、それ
がコンベア７を介し順次移動するセパレータ６の上に展
開されて不織布状の多孔構造を有する接着層２が形成さ
れ、得られた粘着シート８が巻取ロール９に巻取られ
る。In the melt blow method shown in the figure, the adhesive substance 4 is accommodated in a die 5 in a chip-like or granular form, and the adhesive substance is partially heated by heating it through the die. The molten component of the adhesive substance is blown out as fibrous 41 from the die hole 51 by blowing hot air from above the die as shown by the arrow on the separator 6 which sequentially moves through the conveyor 7. The adhesive layer 2 having a non-woven fabric-like porous structure is formed by unfolding, and the obtained pressure-sensitive adhesive sheet 8 is wound on a winding roll 9.
【００１１】多孔性接着層を形成する接着性物質として
は、接着力や透湿度等の保存安定性や耐熱性などの本発
明の目的を達成する点より、二塩基酸とアミン類を重合
成分とし、融点が７０〜１２０℃であるホットメルト型
のポリアミド系共重合体を成分として、加熱溶融でき、
かつ常温又は加熱状態で粘着性を示すものが用いられ
る。As the adhesive substance for forming the porous adhesive layer, a dibasic acid and an amine are polymerized from the viewpoint of achieving the objects of the present invention such as storage stability such as adhesive strength and moisture permeability and heat resistance.
As a component, a hot-melt polyamide copolymer having a melting point of 70 to 120 ° C. as a component can be heated and melted,
In addition, a material that exhibits tackiness at room temperature or in a heated state is used.
【００１２】前記ホットメルト型のポリアミド系共重合
体の具体例としては、通例、二塩基酸（ダイマー酸）
と、エチレンジアミンやヘキサメチレンジアミン、キシ
リレンジアミンや４，４'−ジアミノジシクロヘキシル
アミン、ｐ，ｐ'−メチレンジアミンやアルカノールア
ミンの如きアミン類と、軟化点や結晶性等の制御を目的
にアジピン酸やアゼライン酸やセバシン酸の如き、前記
ダイマー酸以外の酸成分を重合処理したものなどがあげ
られる。The hot-melt type polyamide copolymer
Specific examples of the body are usually dibasic acid(Dimer acid)
And ethylenediamine, hexamethylenediamine, xy
Rylene diamine and 4,4'-diaminodicyclohexyl
Amines, p, p'-methylenediamine and alkanol
With amines such as min, SoftThe purpose is to control the chemical conversion point, crystallinity, etc.
Adipic acid, azelaic acid and sebaShiLike acid, The above
Other than dimer acidExamples include those obtained by polymerizing the acid component.
To be
【００１３】好ましく用いうるポリアミド系共重合体
は、低粘度のダイマー酸系ポリアミドであり、その具体
例としてはε−カプロラクタムやラウリルラクタム、
（１−，２−又は３−）メチルペンタメチレンジアミン
やドデカン二酸の重縮合物の１種又は２種以上を成分と
するものなどがあげられる。A polyamide-based copolymer that can be preferably used is a low-viscosity dimer acid-based polyamide, and specific examples thereof include ε-caprolactam and lauryllactam.
Examples thereof include one or two or more kinds of polycondensates of (1-, 2- or 3-) methylpentamethylenediamine and dodecanedioic acid.
【００１４】またホットメルトアプリケータを用いた均
一繊維の形成性、溶融時の酸化による接着力の低下や黄
変による外観の不良化の防止などの点より、１９０℃で
の溶融粘度が２０〜１５００ｐ、好ましくは１０００ｐ
以下、特に５０〜５００ｐのポリアミド系共重合体が用
いられる。なお前記の酸化や黄変を防止する点より繊維
化処理は、２２０℃以下の可及的に低温とした溶融温度
にて行うことが好ましい。溶融時の酸化防止には、窒素
パージ下での繊維化処理なども有効である。[0014] formation of uniform fibers with the hot melt applicator, Ri by terms of prevention of defects of appearance due varying degradation or yellowing of the adhesive strength due to oxidation during the melting, the melt viscosity at 190 ° C. 20 ~ 1500p , preferably 1000p
In particular, a polyamide-based copolymer of 50 to 500 p is used below .
Irare Ru. From the viewpoint of preventing the above-mentioned oxidation and yellowing, it is preferable to perform the fiberizing treatment at a melting temperature of 220 ° C. or less, which is as low as possible. A fiberizing treatment under a nitrogen purge is also effective for preventing oxidation during melting.
【００１５】さらにポリアミド系共重合体は、接着力と
耐熱性の両立性などの点より、融点が７０〜１２０℃、
好ましくは７５〜１１０℃、特に８５〜１０５℃である
ものが用いられる。ちなみに融点が７０℃未満のもので
は、接着力を満足しても耐熱性に乏しい場合があり、例
えば使い捨てカイロ用袋の如くその製造時や使用時に発
熱を伴う場合に、その発熱でシワが生じる場合がある。
一方、１２０℃を超えるものでは、接着処理に高温を要
して接着処理速度が低速化したり、多孔質フィルムの通
気性を低下させる場合などがある。Further, the polyamide-based copolymer has a melting point of 70 to 120 ° C. from the viewpoint of compatibility of adhesive strength and heat resistance.
Preferably 75 to 110 ° C., is what is Ru is used in particular 85 to 105 ° C.. By the way, if the melting point is less than 70 ° C, the heat resistance may be poor even if the adhesive strength is satisfied. For example, when a bag for disposable body warmers is accompanied by heat generation during its production or use, the heat generation causes wrinkles. There are cases.
On the other hand, if the temperature exceeds 120 ° C., a high temperature may be required for the adhesion treatment, the adhesion treatment speed may be slowed down, or the air permeability of the porous film may be lowered.
【００１６】ポリアミド系共重合体は、単独で又は２種
以上をブレンドして用いうる。繊維化効率などの点より
は、８０以上のメルトインデックス（ｇ／10分、１９０
℃）を示すものが好ましい。接着性物質の調製に際して
は、必要に応じ軟化剤や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。The polyamide copolymers may be used alone or in combination of two or more. From the viewpoint of fiberization efficiency, melt index of 80 or more (g / 10 minutes, 190
C.) is preferable. When preparing the adhesive substance, appropriate additives such as a softening agent and an anti-aging agent may be added, if necessary.
【００１７】孔の微細性や均等分布性などに基づく接着
力と通気性のバランス等の点より好ましい多孔性接着層
は、接着層を形成する繊維の平均繊維径が０．５〜１０
０μm、就中１〜５０μmであり、かかる平均繊維径の繊
維が５０ｇ／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に堆
積したものである。通気性や接着力の偏りが少なくてそ
の平均性に優れ、クッション性や微臭性などにも優れる
多孔性接着層が特に好ましい。なお前記の平均繊維径
は、走査顕微鏡で多孔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に基づ
く。The porous adhesive layer which is preferable from the viewpoint of the balance between the adhesive force and the air permeability based on the fineness and even distribution of the pores has a mean fiber diameter of 0.5 to 10 of the fibers forming the adhesive layer.
0 μm, especially 1 to 50 μm, and the fiber having such an average fiber diameter is 50 g / m 2 or less, especially 1 to 30 g / m 2 , especially 2 to
It is a non-woven fabric or entangled fibrous deposit at a rate of 10 g / m 2 . A porous adhesive layer is particularly preferable because it has little unevenness in air permeability and adhesive force, is excellent in its average property, and is also excellent in cushioning property and slight odor. The average fiber diameter is based on the average value of the fiber diameters at arbitrary 10 points obtained by randomly taking a photograph of the porous adhesive layer with a scanning microscope.
【００１８】多孔質包装材の形成は、セパレータ上の多
孔性接着層をオレフィン系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オレフ
ィン系多孔質フィルムと通気性基材をラミネートして接
着する方法などにより行うことができる。The porous packaging material is formed by transferring the porous adhesive layer on the separator to the adhesive surface of the olefin-based porous film or / and the air-permeable base material, and passing the olefin-based porous film through the transfer layer. It can be performed by a method of laminating and adhering the film and the breathable substrate.
【００１９】また上記図２の方法において、セパレータ
に代えてオレフィン系多孔質フィルム又は通気性基材を
用いて前記の移着処理を省略する方法、さらには同様に
多孔性接着層を形成後、その上にオレフィン系多孔質フ
ィルム又は通気性基材の残る一方をラミネートして前記
の移着処理を省略しつつ目的の多孔質包装材を多孔性接
着層の形成と一連に行う方法なども採ることができる。Further, in the method of FIG. 2 described above, a method of omitting the above-mentioned transfer treatment by using an olefin-based porous film or a breathable base material instead of the separator, and further after forming a porous adhesive layer in the same manner, A method of laminating the remaining one of the olefinic porous film or the air-permeable base material on it and omitting the above-mentioned transfer treatment and performing a series of formation of the porous adhesive layer of the target porous packaging material is also adopted. be able to.
【００２０】多孔質包装材の形成に用いるオレフィン系
多孔質フィルム、通気性基材については従来に準じるこ
とができ、特に限定はない。従ってポリエチレン、就
中、直鎖状低密度ポリエチレンやポリプロピレンなどか
らなるオレフィン系多孔質フィルム、及びポリアミド繊
維やポリエステル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一般に用いられる。なおオレフ
ィン系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て施すこともできる。The olefin-based porous film and the air-permeable base material used for forming the porous packaging material can be modified according to conventional methods and are not particularly limited. Therefore, an olefinic porous film made of polyethylene, especially linear low-density polyethylene or polypropylene, and a nonwoven or felt-like breathable base material made of polyamide fiber or polyester fiber are generally used. If necessary, the adhesive surface of the olefin-based porous film or the air-permeable base material may be subjected to appropriate treatment such as corona treatment, plasma treatment, sputter etching treatment, or anchor treatment with an undercoat agent for the purpose of improving the adhesive strength. Can also be applied.
【００２１】本発明の収容袋は、前記の多孔質包装材を
少なくとも一部に用いて袋体を形成したものであり、通
気発熱性組成物を収容して使い捨てカイロ等を形成する
ためのものである。通気性に基づく発熱性組成物の適度
な発熱性などの点より好ましい収容袋は、０．１〜１０
μmの平均孔径を有して透湿度が１００〜７０００ｇ／
ｍ2・dayのオレフィン系多孔質フィルムを用いたもので
ある。The storage bag of the present invention is a bag formed by using at least a part of the above-mentioned porous wrapping material, and is for storing a ventilation exothermic composition to form a disposable body warmer or the like. Is. The preferable storage bag is 0.1 to 10 from the viewpoint of appropriate heat generation of the heat generating composition based on air permeability.
Has an average pore size of μm and a water vapor transmission rate of 100-7000g /
The m 2 · day olefin-based porous film is used.
【００２２】収容袋の形成は、例えば接着剤や縫製加工
やヒートシール等により包装材の端部を結合して袋体を
形成する方法など、従来に準じることができる。本発明
においては、袋に通気性を持たせるために前記の多孔質
包装材を用いるが、その使用箇所は全面や片面、あるい
はそれらの一部など、適宜に決定することができる。The accommodation bag can be formed in a conventional manner, for example, a method in which the ends of packaging materials are joined by an adhesive, sewing, heat sealing, or the like to form a bag. In the present invention, the above-mentioned porous wrapping material is used in order to make the bag breathable, but the location of use can be appropriately determined on the entire surface, one surface, or a part thereof.
【００２３】[0023]
実施例１
ダイマー酸系ポリアミドからなる融点９０℃、１９０℃
での溶融粘度２５０ｐのホットメルト接着剤のペレット
をアプリケータタンクに入れ１９０℃で溶融してカーテ
ンスプレー方式でポリアミド系不織布（４０ｇ／ｍ2、
目付）の上に坪量３ｇ／ｍ2の不織布状の多孔性接着層
を形成し、その上にポリエチレン系多孔質フィルムを同
じ製造ラインで形成しつつ、かつコロナ放電による表面
処理を施しつつ１１０℃、ライン速度３５ｍ／分でラミ
ネートして多孔質包装材を得た。Example 1 Melting point of dimer acid type polyamide 90 ° C., 190 ° C.
Pellets of hot-melt adhesive with a melt viscosity of 250 p are melted at 190 ° C. in an applicator tank and polyamide-based nonwoven fabric (40 g / m 2 ,
A non-woven fabric-like porous adhesive layer having a basis weight of 3 g / m 2 is formed on the basis weight, and a polyethylene-based porous film is formed on the same in the same production line, and is subjected to surface treatment by corona discharge. A porous packaging material was obtained by laminating at a line speed of 35 m / min at 0 ° C.
【００２４】なお前記においてカーテンスプレーは、ス
プレーエア圧力０．５〜２．０kgf／cm2、流量３０〜１
５０リットル／分の条件で行い、その多孔性接着層にお
ける平均繊維径は、約１０μmであった。またポリエチ
レン系多孔質フィルムは、直鎖状低密度ポリエチレン１
００部に炭酸カルシウム１２０部を配合したものからな
るフィルムを一軸で４倍に延伸処理したものからなり、
平均孔径０．５μm、透湿度６００ｇ／ｍ2・dayのもので
ある。In the above-mentioned curtain spray, the spray air pressure is 0.5 to 2.0 kgf / cm 2 , and the flow rate is 30 to 1.
The average fiber diameter in the porous adhesive layer was about 10 μm. The polyethylene-based porous film is a linear low-density polyethylene 1
A film made of a mixture of 00 parts and 120 parts of calcium carbonate is uniaxially stretched 4 times,
It has an average pore diameter of 0.5 μm and a water vapor transmission rate of 600 g / m 2 · day.
【００２５】実施例２
坪量５ｇ／ｍ2の多孔性接着層としたほかは実施例１に
準じて多孔質包装材を得た。Example 2 A porous packaging material was obtained in the same manner as in Example 1 except that the porous adhesive layer had a basis weight of 5 g / m 2 .
【００２６】実施例３
坪量７ｇ／ｍ2の多孔性接着層としたほかは実施例１に
準じて多孔質包装材を得た。Example 3 A porous packaging material was obtained in the same manner as in Example 1 except that a porous adhesive layer having a basis weight of 7 g / m 2 was used.
【００２７】実施例４
坪量１０ｇ／ｍ2の多孔性接着層としたほかは実施例１
に準じて多孔質包装材を得た。Example 4 Example 1 except that a porous adhesive layer having a basis weight of 10 g / m 2 was used.
A porous packaging material was obtained according to the above.
【００２８】比較例１
ポリアミド系ホットメルト接着剤に代えて、スチレン系
エラストマー（ＳＩＳ）１００重量部と石油系樹脂１０
０重量部とテルペン系オイル５０重量部の混練物からな
る粘着性物質を用いて坪量７ｇ／ｍ2の多孔性接着層と
し、８０℃でラミネートしたほかは実施例１に準じて多
孔質包装材を得た。Comparative Example 1 100 parts by weight of styrene elastomer (SIS) and 10 parts of petroleum resin were used instead of the polyamide hot melt adhesive.
Porous packaging according to Example 1 except that a porous adhesive layer having a basis weight of 7 g / m 2 was formed by using an adhesive substance composed of a kneaded product of 0 part by weight and 50 parts by weight of a terpene-based oil and laminated at 80 ° C. I got the material.
【００２９】比較例２
ポリエチレン系多孔質フィルムにコロナ放電処理を施さ
ずにラミネートしたほかは実施例１に準じて多孔質包装
材を得た。Comparative Example 2 A porous packaging material was obtained in the same manner as in Example 1 except that a polyethylene type porous film was laminated without being subjected to corona discharge treatment.
【００３０】評価試験
実施例、比較例で得た多孔質包装材について、接着力
（１８０度ピール、剥離速度３００mm／分）、透湿度、
風合いを調べた。また多孔質包装材を６０℃で一週間保
存してその透湿度を調べ、透湿度の低下率（保存安定
性）を求めた。さらに多孔質包装材を６０℃又は７０℃
の雰囲気に３０分間放置したのち取り出してシワ発生の
有無を調べた（耐熱性）。Evaluation test The porous packaging materials obtained in Examples and Comparative Examples were tested for adhesive strength (180 degree peel, peeling speed 300 mm / min), moisture permeability,
I checked the texture. Further, the porous packaging material was stored at 60 ° C. for one week and its moisture permeability was examined to determine the rate of decrease in moisture permeability (storage stability). Furthermore, the porous packaging material is 60 ℃ or 70 ℃
After leaving it in the atmosphere for 30 minutes, it was taken out and examined for wrinkles (heat resistance).
【００３１】前記の結果を次表に示した。 ＊１：若干のシワ発生 ＊２：著しいシワ発生 ＊３：剥離を伴うシワ発生The above results are shown in the following table. * 1: Slight wrinkle formation * 2: Significant wrinkle formation * 3: Wrinkle formation with peeling
【図１】多孔質包装材例の断面図FIG. 1 is a sectional view of an example of a porous packaging material.
【図２】多孔性接着層の製造工程説明図。FIG. 2 is an explanatory view of a manufacturing process of a porous adhesive layer.
１：オレフィン系多孔質フィルム ２：多孔性接着層 ３：通気性基材 1: Olefin-based porous film 2: Porous adhesive layer 3: Breathable substrate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大西 啓仁 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 (72)発明者 大根 達彦 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 (56)参考文献 特開 平８−131472（ＪＰ，Ａ) 特開 昭63−178948（ＪＰ，Ａ) 特開 平３−251243（ＪＰ，Ａ) 特開 平７−255506（ＪＰ，Ａ) 特開 平８−126656（ＪＰ，Ａ) 特開 平５−51045（ＪＰ，Ａ) 実開 昭63−111440（ＪＰ，Ｕ) 特公 平４−22781（ＪＰ，Ｂ２) 国際公開95／017864（ＷＯ，Ａ１) (58)調査した分野(Int.Cl.7，ＤＢ名) A61F 7/00 - 7/08 B32B 5/32 B65D 30/02 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hirohito Onishi 1-2-1, Shimohozumi, Ibaraki City, Osaka Prefecture Nitto Denko Corporation (72) Tatsuhiko Ohne 1-2-1, Shimohozumi, Ibaraki City, Osaka Prefecture No. Nitto Denko Corporation (56) Reference JP-A-8-131472 (JP, A) JP-A-63-178948 (JP, A) JP-A-3-251243 (JP, A) JP-A-7- 255506 (JP, A) JP 8-126656 (JP, A) JP 5-51045 (JP, A) Actual development 63-111440 (JP, U) JP-B 4-22781 (JP, B2) International Publication 95/017864 (WO, A1) (58) Fields investigated (Int.Cl. 7 , DB name) A61F 7 /00-7/08 B32B 5/32 B65D 30/02
Claims (4)
成分とする接着性物質を繊維化して形成した多孔性接着
層を介してオレフィン系多孔質フィルムと通気性基材と
を接着してなり、前記のポリアミド系共重合体が二塩基
酸とアミン類を重合成分とする融点７０〜１２０℃のも
のであることを特徴とする多孔質包装材。1. An olefin-based porous film and a breathable base material are bonded together via a porous adhesive layer formed by fiberizing an adhesive substance containing a hot-melt type polyamide copolymer as a component. And the above polyamide-based copolymer is a dibasic
With a melting point of 70-120 ° C, which contains acids and amines as polymerization components.
Porous wrapping material, characterized in Nodea Rukoto.
が１９０℃での溶融粘度２０〜１５００ｐのものである
ことを特徴とする多孔質包装材。2. The polyamide-based copolymer according to claim 1.
Porous wrapping material, characterized in that but is of melt viscosity. 20 to 1500 p at 1 90 ° C..
１〜５０μm径の繊維の１〜３０ｇ／ｍ２の不織布状塗
布層からなり、オレフィン系多孔質フィルムが０．１〜
１０μmの平均孔径を有して透湿度１００〜７０００ｇ
／ｍ２・dayのものである多孔質包装材。ポリアミド系共
重合体がる多孔質包装材。3. The porous adhesive layer according to claim 1 or 2, comprising a nonwoven fabric-like coating layer of 1 to 30 g / m 2 of fibers having a diameter of 1 to 50 μm, and an olefinic porous film of 0.1 to
Water vapor permeability of 100-7000g with average pore size of 10μm
/ M 2 · day porous packing material. A porous packaging material containing a polyamide-based copolymer.
包装材を少なくともその一部に用いて袋体を形成したこ
とを特徴とする通気発熱性組成物の収容袋。4. A bag containing an air-heating exothermic composition, characterized in that a bag body is formed by using the porous packaging material according to any one of claims 1 to 3 as at least a part thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16333397A JP3514951B2 (en) | 1997-06-04 | 1997-06-04 | Porous packaging material and its storage bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16333397A JP3514951B2 (en) | 1997-06-04 | 1997-06-04 | Porous packaging material and its storage bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10328224A JPH10328224A (en) | 1998-12-15 |
| JP3514951B2 true JP3514951B2 (en) | 2004-04-05 |
Family
ID=15771874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16333397A Expired - Fee Related JP3514951B2 (en) | 1997-06-04 | 1997-06-04 | Porous packaging material and its storage bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3514951B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5080135B2 (en) | 2007-05-21 | 2012-11-21 | 日東ライフテック株式会社 | Disposable body warmer and bag body component for disposable body warmer |
| JP5411629B2 (en) * | 2009-09-02 | 2014-02-12 | 日東ライフテック株式会社 | Porous packaging material and disposable body warmer |
| CN107981967A (en) * | 2016-10-26 | 2018-05-04 | 袁暾 | A kind of cold compress application for carrying silicate particulate |
| JP7048080B2 (en) * | 2018-02-05 | 2022-04-05 | 学校法人産業医科大学 | Organic solvent collector and collection method, and method for measuring the amount of organic solvent |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60195126A (en) * | 1984-03-16 | 1985-10-03 | Kishimoto Akira | Resin bottle |
| JPH0642999Y2 (en) * | 1987-01-09 | 1994-11-09 | 日東電工株式会社 | Porous bag |
| JP2524140B2 (en) * | 1987-01-09 | 1996-08-14 | 日東電工株式会社 | Bag material for breathable bags |
| JP2935221B2 (en) * | 1990-03-01 | 1999-08-16 | マイコール株式会社 | Heating element by adhesion method |
| JP3122773B2 (en) * | 1991-08-27 | 2001-01-09 | 昭和アルミニウム株式会社 | Heat sealing material for hermetically sealed containers |
| WO1995017864A1 (en) * | 1993-12-28 | 1995-07-06 | Kiribai Chemical Co., Ltd. | Throwaway body warmer for footwear |
| JP3366104B2 (en) * | 1994-03-18 | 2003-01-14 | フェリック株式会社 | Heating element for feet |
| JPH08126656A (en) * | 1994-10-31 | 1996-05-21 | Kiribai Kagaku Kk | Disposable body warmer |
| JPH08131472A (en) * | 1994-11-04 | 1996-05-28 | Nitto Denko Corp | Perforated packaging material and its housing bag |
-
1997
- 1997-06-04 JP JP16333397A patent/JP3514951B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10328224A (en) | 1998-12-15 |
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