JPH1150019A - Antimicrobial porous adhesive layer, porous sheet and housing bag - Google Patents
Antimicrobial porous adhesive layer, porous sheet and housing bagInfo
- Publication number
- JPH1150019A JPH1150019A JP9221923A JP22192397A JPH1150019A JP H1150019 A JPH1150019 A JP H1150019A JP 9221923 A JP9221923 A JP 9221923A JP 22192397 A JP22192397 A JP 22192397A JP H1150019 A JPH1150019 A JP H1150019A
- Authority
- JP
- Japan
- Prior art keywords
- porous
- antimicrobial
- film
- adhesive layer
- air
- 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
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Bag Frames (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
【0001】[0001]
【発明の技術分野】本発明は、抗菌作用に優れる抗菌多
孔性接着層並びにそれを用いた通気ないし透湿度の均等
性等に優れる多孔シート及び通気発熱性組成物の収容袋
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial porous adhesive layer having an excellent antibacterial effect, a porous sheet and a bag for containing a ventilating heat-generating composition using the same, which are excellent in uniformity of ventilation or moisture permeability.
【0002】[0002]
【従来の技術】従来、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多孔シートが知られ
ており(特開平8−131472号公報)、抗菌剤含有
の多孔質フィルムや通気性基材も知られていた(特開平
6−49253号公報、特開平9−48868号公
報)。2. Description of the Related Art Conventionally, an olefin-based porous film is bonded to a breathable substrate through a porous adhesive layer formed by fibrillating a sticky substance made of a styrene-based elastomer or an ethylene / vinyl acetate-based copolymer. And a porous film containing an antimicrobial agent and a breathable substrate (Japanese Patent Application Laid-Open Nos. 6-49253 and 9-48868). Gazette).
【0003】前記の多孔シートは、その通気性ないし透
湿性を利用して例えば紙おむつ等の生理用品や衣料、建
築等の防水透湿シート、使い捨てカイロの収容袋等の包
装材などとして種々の用途に用いられている。ちなみに
使い捨てカイロの収容袋は、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するためのも
のであり、多孔シートの通気性に基づいて空気を取り込
み発熱性組成物が酸素と接触して発熱し、点火不要とし
たものである。[0003] The above-mentioned porous sheet is used for various uses as a packing material such as a sanitary article such as a disposable diaper, clothing, a waterproof moisture-permeable sheet such as a building, a storage bag of a disposable body warmer, etc. by utilizing its air permeability or moisture permeability. It is used for By the way, the storage bag of the disposable body warmer is for storing a ventilation heat-generating composition composed of metal powder, water, a water retention agent, an oxidizing agent, etc., and takes in air based on the air permeability of the porous sheet to generate heat. The object generates heat by contact with oxygen, and ignition is not required.
【0004】しかしながら、抗菌剤含有の多孔質フィル
ムや通気性基材を用いて多孔シートを形成した場合にあ
っても、例えば多湿な状態が維持されやすい紙おむつの
場合など、用途や使用環境により菌の増殖が大きくて満
足できる抗菌作用が得られない問題点があった。However, even when a porous sheet is formed using a porous film or a breathable base material containing an antibacterial agent, depending on the intended use and use environment, for example, in the case of a disposable diaper in which a humid state is easily maintained. However, there was a problem that the antibacterial action was not satisfactory because of the large growth of the bacteria.
【0005】[0005]
【発明の技術的課題】本発明は、抗菌作用の安定性や持
続性に優れ、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、通気性ないし透湿度のバラツキが
少なくて風合いにも優れる多孔シートの開発を課題とす
る。The present invention has excellent antibacterial action stability and persistence, has excellent adhesive strength between a porous film and a gas-permeable base material, does not easily peel off, and has little variation in gas permeability or moisture permeability. The task is to develop a porous sheet with excellent texture.
【0006】[0006]
【課題の解決手段】本発明は、抗菌剤を配合したホット
メルト型の接着性物質からなる繊維を多孔状態に配置し
たことを特徴とする抗菌多孔性接着層、及びその抗菌多
孔性接着層を介して多孔質フィルムと通気性基材を接着
してなることを特徴とする多孔シート、並びにその多孔
シートを少なくとも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。An object of the present invention is to provide an antimicrobial porous adhesive layer characterized in that fibers made of a hot-melt type adhesive substance containing an antimicrobial agent are arranged in a porous state, and the antimicrobial porous adhesive layer is provided. A porous sheet characterized in that a porous film and a gas-permeable base material are adhered to each other through a porous film, and a bag-shaped heat-generating composition characterized in that a bag body is formed using at least a part of the porous sheet. A storage bag is provided.
【0007】[0007]
【発明の効果】本発明によれば、接着性物質の繊維から
なる多孔性接着層が優れた抗菌作用を長期に安定して発
揮し、通気性ないし透湿性や接着力に偏りが少なくてそ
の均等性に優れ、クッション性や加熱溶融による臭気揮
散で微臭性にも優れている。その結果、かかる多孔性接
着層を介して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を得る
ことができる。またかかるラミネート体からなる多孔シ
ートは、その優れた密着力や透湿度の安定性等に基づい
て使い捨てカイロ等の収容袋として実用しても剥離せ
ず、前記接着層のクッション性や微臭性等に基づいて良
好な風合いを発揮し、不快な臭いを発しにくい利点など
も有している。According to the present invention, the porous adhesive layer made of the fiber of the adhesive substance exhibits an excellent antibacterial action stably for a long period of time, and has a small bias in air permeability or moisture permeability and adhesive strength. Excellent in uniformity, excellent in cushioning and odor emission by heating and melting. As a result, it is possible to obtain a laminate having a high degree of material performance such as air permeability provided by the porous film and the air-permeable substrate provided through the porous adhesive layer. Further, the porous sheet made of such a laminate does not peel off even when practically used as a storage bag for a disposable body warmer or the like based on its excellent adhesion and stability of moisture permeability, and the adhesive layer has a cushioning property and a slight odor. It also has the advantage of exhibiting a good texture based on the above-mentioned characteristics, and hardly emitting an unpleasant odor.
【0008】[0008]
【発明の実施形態】本発明の抗菌多孔性接着層は、抗菌
剤を配合したホットメルト型の接着性物質からなる繊維
を多孔状態に配置したものからなり、多孔シートは、そ
の抗菌多孔性接着層を介して多孔質フィルムと通気性基
材を接着したものからなる。その多孔シートの例を図1
に示した。1が多孔質フィルム、2が抗菌多孔性接着
層、3が通気性基材である。BEST MODE FOR CARRYING OUT THE INVENTION The antimicrobial porous adhesive layer of the present invention comprises fibers made of a hot-melt type adhesive substance containing an antimicrobial agent arranged in a porous state. It consists of a porous film and a gas-permeable substrate bonded together via a layer. Figure 1 shows an example of the porous sheet.
It was shown to. 1 is a porous film, 2 is an antimicrobial porous adhesive layer, and 3 is a breathable substrate.
【0009】抗菌多孔性接着層は、抗菌剤を配合したホ
ットメルト型の接着性物質からなる繊維を多孔状態に配
置することにより形成することができる。その接着性物
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。The antimicrobial porous adhesive layer can be formed by arranging fibers of a hot-melt type adhesive substance containing an antimicrobial agent in a porous state. As the adhesive substance, for example, a hot-melt type adhesive or adhesive, which can be heated and melted and shows tackiness at room temperature or at the time of heat melting or at the time of heat-melting into a fiber, or re-forming the formed fiber Appropriate materials such as those exhibiting adhesiveness upon heating can be used.
【0010】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, as an example of the adhesive substance, 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.
【0011】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。[0011] It is difficult to cause bleeding of low molecular weight components due to aging with the passage of time, which tends to block the pores of the porous film and reduce air permeability, and has excellent storage stability. Adhesive substances that can be preferably used in terms of heat resistance and the like that can prevent wrinkles between the porous film and the air-permeable substrate due to heat generation, etc., include hot-melt polyamide copolymers and reactive polyurethanes. Component.
【0012】ちなみに前記したホットメルト型のポリア
ミド系共重合体の例としては、通例、二塩基酸からなる
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、必要に応じ軟化点や
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
バチン酸の如き酸成分を重合処理したものなどがあげら
れる。Incidentally, examples of the above-mentioned hot-melt type polyamide copolymer include dimer acid composed of dibasic acid, ethylenediamine, hexamethylenediamine, xylylenediamine, 4,4'-diaminodicyclohexylamine, and the like. Examples include amines such as p, p'-methylenediamine and alkanolamines, and those obtained by polymerizing acid components such as adipic acid, azelaic acid and sebacic acid for the purpose of controlling the softening point and crystallinity as required. Can be
【0013】就中、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
成分とする低粘度のダイマー酸系ポリアミドなどが好ま
しく用いられる。また接着力と耐熱性の両立性などの点
よりは、融点が70〜120℃のポリアミド系共重合体
が好ましく用いうる。In particular, a low-viscosity dimer containing one or more of ε-caprolactam, lauryl lactam, (1-, 2- or 3-) methylpentamethylenediamine and polycondensate of dodecanediacid. Acid-based polyamides and the like are preferably used. Further, from the viewpoint of compatibility between adhesive strength and heat resistance, a polyamide copolymer having a melting point of 70 to 120 ° C can be preferably used.
【0014】一方、ホットメルトタイプの反応型ポリウ
レタンとしては、例えばHOR1OHとOCNR2NCO
との反応による、一般式:OCN−R2−NHCOO−
R1−OCONH−R2−NCO(ただし、R1、R2は有
機基である。)で表されるものの如く、経時的に反応硬
化が進行する適宜なものを用いることができる。On the other hand, as a hot-melt type reactive polyurethane, for example, HOR 1 OH and OCNR 2 NCO
By reaction with the general formula: OCN-R 2 -NHCOO-
An appropriate material whose reaction curing progresses with time, such as those represented by R 1 -OCONH-R 2 -NCO (where R 1 and R 2 are organic groups), can be used.
【0015】ちなみに前記した末端にイソシアネート基
を有するウレタンプレポリマーを主成分とするホットメ
ルトタイプの反応型ポリウレタンは、図2に示した如く
(1)接着剤状態、(2)溶解状態、(3)接着固定状
態を経て、図3に例示の鎖延長反応(a)や分岐・架橋
反応(b)等の反応機構を介し大気中、あるいは多孔質
フィルムや通気性基材等の被着体中の湿気等の水分を介
して常温で硬化反応が進行し(4)、架橋構造を形成す
る。Incidentally, the hot-melt type reactive polyurethane mainly composed of a urethane prepolymer having an isocyanate group at a terminal as described above contains (1) an adhesive state, (2) a dissolved state, and (3) 3) After the adhesive fixation state, in the air, or in the adherend such as a porous film or a gas-permeable substrate, through a reaction mechanism such as a chain extension reaction (a) or a branching / crosslinking reaction (b) illustrated in FIG. The curing reaction proceeds at room temperature through moisture such as moisture (4) to form a crosslinked structure.
【0016】上記した接着性物質形成用のポリマーは、
単独で又は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 above-mentioned polymer for forming an adhesive substance is as follows:
They 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.
【0017】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.
【0018】本発明においては、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、溶融粘度、殊に90〜200℃
でのそれが1500p以下、就中20〜500p、特に
50〜200pとなるように調製した接着性物質が好ま
しく用いうる。上記の如くホットメルト型の接着性物質
を用いることにより、支持基材上での乾燥等の加熱処理
の必要を回避でき、支持基材の薄膜化や必要耐熱性の低
温化などが可能となる。[0018] In the present invention, the melt viscosity is considered from the viewpoints of maintaining a 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. Especially 90 to 200 ° C
Adhesive substances prepared so as to be 1500 p or less, especially 20 to 500 p, especially 50 to 200 p can be preferably used. By using the hot-melt type adhesive substance as described above, it is possible to avoid the necessity of heat treatment such as drying on the supporting base material, and it is possible to make the supporting base material thinner and lower the necessary heat resistance. .
【0019】接着性物質に配合する抗菌剤については特
に限定はなく、抗菌力や安全性、耐熱性や耐候性、耐水
性や耐薬品性や外観性等の、用途に応じた要求特性など
に応じて無機系や有機系の適宜なものを用いうる。抗菌
作用の持続性や熱安定性、安全性などの点よりは、金属
系抗菌性イオンを導入した無機系担持体などが好ましく
用いうる。There is no particular limitation on the antibacterial agent to be added to the adhesive substance, and the antibacterial property, safety, heat resistance, weather resistance, water resistance, chemical resistance, appearance, and other required characteristics according to the use are determined. An appropriate inorganic or organic material can be used accordingly. An inorganic carrier into which a metal-based antibacterial ion is introduced can be preferably used from the viewpoints of durability of antibacterial action, thermal stability, safety, and the like.
【0020】ちなみに前記した無機系担持体の具体例と
しては、ゼオライトやリン酸ジルコニウム、ヒドロキシ
アパタイトやリン酸塩系セラミックス等からなる無機系
担体の骨格構造内に、銀や銅、亜鉛や錫等の金属系抗菌
性イオンを担持させたものなどがあげられる。Incidentally, specific examples of the above-mentioned inorganic carrier include silver, copper, zinc, tin and the like in the skeleton structure of an inorganic carrier made of zeolite, zirconium phosphate, hydroxyapatite, phosphate ceramics and the like. And those carrying a metal-based antibacterial ion.
【0021】抗菌剤の配合量は、抗菌力などに応じて適
宜に決定しうるが、一般には接着力の低下防止などの点
より接着性物質100重量部あたり、0.2〜10重量
部、就中0.3〜5重量部、特に0.5〜3重量部の抗
菌剤が配合される。なお抗菌剤は、1種又は2種以上を
用いてよい。The amount of the antibacterial agent can be appropriately determined according to the antibacterial activity and the like. However, in general, from 0.2 to 10 parts by weight, In particular, 0.3 to 5 parts by weight, especially 0.5 to 3 parts by weight, of an antibacterial agent is incorporated. One or more antibacterial agents may be used.
【0022】抗菌多孔性接着層の形成は、例えば抗菌剤
配合の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4に例示したカーテンスプレー方式やメルトブ
ロー方式やスロットスプレー方式などの適宜な方式で接
着性物質4を繊維化してセパレータや多孔質フィルムや
通気性基材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優れる
ものとなる。The antimicrobial porous adhesive layer is formed by, for example, spraying and developing an adhesive substance containing an antimicrobial agent through hot air while being heated and melted, such as a curtain spray method, a melt blow method or a slot spray method as shown in FIG. Adhesive substance 4 is formed into a fiber by an appropriate method, developed and deposited on an appropriate supporting base material such as a separator, a porous film, a gas-permeable base material, and the like to form porous adhesive layer 2. It can be carried out by an appropriate method of fibrillating the substance in an appropriate manner and arranging it in a porous state. By forming the adhesive substance into a fibrous form while being heated and melted, the odor is volatilized, and the adhesive substance has excellent odor.
【0023】なお前記図例のカーテンスプレー方式によ
る方法においては、通気性基材3を巻取ロール31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5
1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通気性基材3の上に展開
塗布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、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7を介し接着処
理されて巻取ロール9に巻取られ、一連の同じ工程で目
的の多孔シート8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 is sequentially fed out from the winding roll 31 and supplied to the die 5, and the arrow is drawn. The hot air is blown from above the die as shown in FIG.
The fibers are blown into 41 in a curtain form, and are spread and applied on a gas-permeable base material 3 which sequentially moves through a conveyor 6 to form an adhesive layer 2 having a nonwoven fabric-like porous structure. The porous film 1 sequentially fed from the take-up roll 11 is arranged, adhered through a pinch roll 7 and taken up by a take-up roll 9, and a target porous sheet 8 is formed in a series of the same steps. .
【0024】孔の微細性や均等分布性などに基づく接着
力と通気性ないし透湿度とのバランスなどの点より好ま
しい抗菌多孔性接着層は、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100g
/m2以下、就中1〜30g/m2、特に2〜10g/m
2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抗菌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
均値を算出する方法などにより求めることができる。The antibacterial porous adhesive layer, which is preferable from the viewpoint of the balance between the adhesive force based on the fineness and uniform distribution of the pores and the air permeability or moisture permeability, has an average diameter of the fibers forming the adhesive layer of 0. 1 μm to 1 mm, especially 0.5 to 100 μm, especially 1 to 50 μm, and 100 g of fibers having such an average diameter
/ M 2 or less, especially 1 to 30 g / m 2 , particularly 2 to 10 g / m
It was deposited in a nonwoven fabric, entangled fibrous, or spider web porous structure at a rate of 2 . The average fiber diameter can be determined, for example, by a method of randomly taking a photograph of the antibacterial porous adhesive layer with a scanning microscope and calculating the average value of the fiber diameters at arbitrary 10 points.
【0025】前記の繊維径や坪量を満足する多孔性接着
層は通例、5重量%以上、就中15〜75重量%の空隙
率を示すが、本発明においては空隙率が75重量%以上
の多孔性接着層であってもよい。なおかかる空隙率は、
同じ厚さの多孔性接着層とベタ塗接着層の単位面積あた
りの重量をそれぞれW1、W2としたとき、式:(W2−
W1)/W2×100にて算出することができる。The porous adhesive layer satisfying the above fiber diameter and basis weight usually shows a porosity of 5% by weight or more, especially 15 to 75% by weight. In the present invention, the porosity is 75% by weight or more. May be used. The porosity is
When the weight per unit area of the porous adhesive layer and the solid-coated adhesive layer having the same thickness is W 1 and W 2 , respectively, the formula: (W 2 −
W 1 ) / W 2 × 100.
【0026】多孔シートの形成は、上記した図4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抗
菌多孔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抗菌多孔性接着層
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。The porous sheet is formed by a method of forming an antimicrobial porous adhesive layer on a porous film and / or a gas-permeable substrate and laminating them, as in the method of FIG. The antibacterial porous adhesive layer thus formed can be transferred to an adhesive surface of a porous film or / and a gas-permeable substrate, and can be laminated by an appropriate method such as a method of laminating through the transfer layer.
【0027】多孔シート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に準じることができ、特に
限定はない。従って適宜な熱可塑性樹脂等からなる多孔
質フィルム、及びポリアミド繊維やポリエステル繊維や
ポリプロピレン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。The porous film and the air-permeable substrate used for forming the porous sheet can be in accordance with the conventional one, and are not particularly limited. Accordingly, a porous film made of an appropriate thermoplastic resin or the like, a nonwoven fabric-like or felt-like air-permeable base made of polyamide fiber, polyester fiber, polypropylene fiber or the like is generally used.
【0028】また多孔質フィルム及び通気性基材は、そ
の一方又は両方が抗菌剤を含有するものであってもよ
い。抗菌剤含有の多孔質フィルムや通気性基材を用いる
ことにより、抗菌作用の信頼性により優れる多孔シート
を得ることができる。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してもよ
い。Further, one or both of the porous film and the air-permeable substrate may contain an antibacterial agent. By using a porous film or a breathable substrate containing an antibacterial agent, a porous sheet having more excellent antibacterial action reliability can be obtained. The adhesive surface of the porous film or the air-permeable substrate may be subjected to an appropriate treatment such as a corona treatment, a plasma treatment, a sputter etching treatment, or an anchor treatment with a primer or the like for the purpose of improving the adhesion force, if necessary. Is also good.
【0029】本発明による多孔シートは、密着力や通気
性等に優れ、その通気性ないし透湿性等を利用して紙お
むつ等の生理用品の形成材や、衣料等における防水透湿
布、建築物等における防水透湿シートや使い捨てカイロ
の収容袋等としての包装材などの種々の用途に好ましく
用いうる。The porous sheet according to the present invention is excellent in adhesion, air permeability, etc., and uses its air permeability or moisture permeability to form materials for sanitary articles such as disposable diapers, waterproof moisture permeable cloths for clothing, buildings, etc. And a packaging material as a storage bag for disposable warmers and the like.
【0030】本発明による収容袋は、前記の多孔シート
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、0.1〜1
0μmの平均孔径を有して透湿度が100〜7000g
/m2・dayの多孔質フィルム、特にポリエチレン、就
中、直鎖状低密度ポリエチレンやポリプロピレン等を成
分とするオレフィン系の多孔質フィルムを用いたもので
ある。[0030] The storage bag according to the present invention is one in which a bag is formed using at least a part of the porous sheet,
This is for forming a disposable body warmer or the like by containing the ventilation heat generating composition. A preferable storage bag from the viewpoint of moderate heat generation of the heat generation composition based on air permeability is 0.1 to 1
With a mean pore size of 0 μm and a moisture permeability of 100 to 7000 g
/ M 2 · day porous film, particularly an olefin-based porous film containing polyethylene, especially linear low-density polyethylene, polypropylene and the like.
【0031】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シ
ートを用いるが、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 storage bag can be formed in a conventional manner, for example, by a method in which the ends of the packaging material are joined by an adhesive, sewing, heat sealing or the like to form a bag. In the present invention, the above-mentioned porous sheet is used in order to impart air permeability to the bag, and the location of use can be determined as appropriate, such as the entire surface, one surface, or a part thereof.
【0032】[0032]
実施例1 スチレン系エラストマー(SIS)50部(重量部、以
下同じ)、石油系樹脂50部、及び無水換算で1部の粉
末状ゼオライト抗菌剤をニーダにより160℃で混練し
たのちチップ化し、そのチップをダイスに入れてメルト
ブロー方式でシリコーンコートのセパレータ上に展開し
て坪量7g/m2の不織布状の抗菌多孔性接着層を形成
し、それをポリエチレン系多孔質フィルムの片面に移着
してその上にポリアミド系不織布(40g/m2、目
付)をラミネートして多孔シートを得た。Example 1 50 parts of a styrene-based elastomer (SIS) (parts by weight, the same applies hereinafter), 50 parts of a petroleum-based resin, and 1 part of a powdered zeolite antibacterial agent in an anhydrous equivalent were kneaded at 160 ° C with a kneader, and then formed into chips. The chip is put in a die and spread on a silicone-coated separator by a melt blow method to form a nonwoven fabric-like antibacterial porous adhesive layer having a basis weight of 7 g / m 2 , which is transferred to one surface of a polyethylene-based porous film. Then, a polyamide-based nonwoven fabric (40 g / m 2 , basis weight) was laminated thereon to obtain a porous sheet.
【0033】なお前記においてメルトブローは、ダイス
温度200℃、熱風温度210℃、熱風圧力1〜2kgf
/cm2、コンベアによるライン速度3m/分の条件で行
い、その抗菌多孔性接着層における平均繊維径は、約1
0μm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100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(バラツキ範囲50;最大6
25、最小575)のものである。In the above, the melt blow was performed at a die temperature of 200 ° C., a hot air temperature of 210 ° C., and a hot air pressure of 1 to 2 kgf.
/ Cm 2 , and a line speed of 3 m / min by a conveyor. The average fiber diameter of the antibacterial porous adhesive layer is about 1
It was 0 μm. As the polyethylene porous film, a film composed of a mixture of 100 parts of linear low-density polyethylene and 120 parts of calcium carbonate is used as a uniaxial film.
It is composed of a product that has been stretched twice and has an average pore size of 0.5 μm
Moisture permeability 600g / m 2 · day (variation range 50; maximum 6
25, minimum 575).
【0034】実施例2 粉末状ゼオライト抗菌剤の配合量が3部の抗菌多孔性接
着層としたほかは実施例1に準じて多孔シートを得た。Example 2 A porous sheet was obtained in the same manner as in Example 1 except that the amount of the powdery zeolite antibacterial agent was 3 parts to form an antibacterial porous adhesive layer.
【0035】実施例3 粉末状ゼオライト抗菌剤の配合量が0.5部の抗菌多孔
性接着層としたほかは実施例1に準じて多孔シートを得
た。Example 3 A porous sheet was obtained in the same manner as in Example 1, except that the amount of the powdery zeolite antibacterial agent was 0.5 part of an antibacterial porous adhesive layer.
【0036】比較例 粉末状ゼオライト抗菌剤を配合しない抗菌多孔性接着層
としたほかは実施例1に準じて多孔シートを得た。Comparative Example A porous sheet was obtained in the same manner as in Example 1, except that an antibacterial porous adhesive layer containing no powdery zeolite antibacterial agent was used.
【0037】評価試験 接着力、透湿度 実施例、比較例で得た多孔シートの接着力(180度ピ
ール、剥離速度300mm/分)と透湿度を調べた。Evaluation Test Adhesive Strength and Moisture Permeability The adhesive strength (180 ° peel, peeling speed 300 mm / min) and moisture permeability of the porous sheets obtained in Examples and Comparative Examples were examined.
【0038】抗菌力 実施例、比較例で得た多孔シートを5cm角に切断してシ
ャーレ中に水平に置き、その多孔シート上に大腸菌を含
む液1ccを滴下して、23℃の雰囲気下に1時間又は2
4時間保存したのち多孔シート上の菌を洗い落し、菌数
を数えた。Antibacterial activity The porous sheets obtained in Examples and Comparative Examples were cut into 5 cm squares, placed horizontally in a petri dish, and 1 cc of a liquid containing Escherichia coli was dropped on the porous sheets, and the mixture was heated at 23 ° C in an atmosphere. 1 hour or 2
After storing for 4 hours, the bacteria on the porous sheet were washed off and the number of bacteria was counted.
【0039】前記の結果を次表に示した。 The results are shown in the following table.
【図1】多孔シート例の断面図FIG. 1 is a cross-sectional view of an example of a perforated sheet.
【図2】反応型ポリウレタン接着剤の状態変化の説明図FIG. 2 is an explanatory view of a state change of a reactive polyurethane adhesive.
【図3】反応型ポリウレタン接着剤の反応機構の説明図FIG. 3 is an explanatory diagram of a reaction mechanism of a reactive polyurethane adhesive.
【図4】抗菌多孔性接着層の製造工程説明図FIG. 4 is an explanatory view of a manufacturing process of an antibacterial porous adhesive layer.
1:多孔質フィルム 2:抗菌多孔性接着層 3:
通気性基材1: porous film 2: antibacterial porous adhesive layer 3:
Breathable substrate
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI B65D 30/02 B65D 30/02 C09J 7/00 C09J 7/00 11/02 11/02 201/00 201/00 (72)発明者 高畠 栄治 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──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification symbol FI B65D 30/02 B65D 30/02 C09J 7/00 C09J 7/00 11/02 11/02 201/00 201/00 (72) Invention Person Eiji Takahata 1-1-2 Shimohozumi, Ibaraki-shi, Osaka Nitto Denko Corporation
Claims (5)
性物質からなる繊維を多孔状態に配置したことを特徴と
する抗菌多孔性接着層。1. An antimicrobial porous adhesive layer, wherein fibers made of a hot-melt adhesive material containing an antimicrobial agent are arranged in a porous state.
して多孔質フィルムと通気性基材を接着してなることを
特徴とする多孔シート。2. A porous sheet comprising a porous film and a gas-permeable substrate bonded to each other via the antibacterial porous adhesive layer according to claim 1.
1〜50μm径の繊維よりなる坪量1〜30g/m2の不
織布状の層からなり、多孔質フィルムが0.1〜10μ
mの平均孔径を有して透湿度が100〜7000g/m2
・dayのオレフィン系フィルムからなる多孔シート。3. The method according to claim 2, wherein the antimicrobial porous adhesive layer comprises a nonwoven fabric layer having a basis weight of 1 to 30 g / m 2 , comprising fibers having a diameter of 1 to 50 μm, and a porous film having a thickness of 0.1 to 10 μm.
m having an average pore diameter of 100 to 7000 g / m 2
・ A porous sheet made of olefin-based film on day.
ム及び通気性基材の一方又は両方が抗菌剤を含有する多
孔シート。4. The porous sheet according to claim 2, wherein one or both of the porous film and the air-permeable substrate contains an antibacterial agent.
くとも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。5. A bag for storing a ventilating heat-generating composition, wherein a bag is formed using at least a part of the porous sheet according to claim 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9221923A JPH1150019A (en) | 1997-08-04 | 1997-08-04 | Antimicrobial porous adhesive layer, porous sheet and housing bag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9221923A JPH1150019A (en) | 1997-08-04 | 1997-08-04 | Antimicrobial porous adhesive layer, porous sheet and housing bag |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH1150019A true JPH1150019A (en) | 1999-02-23 |
Family
ID=16774283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9221923A Pending JPH1150019A (en) | 1997-08-04 | 1997-08-04 | Antimicrobial porous adhesive layer, porous sheet and housing bag |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH1150019A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011051242A (en) * | 2009-09-02 | 2011-03-17 | Nitto Lifetech Kk | Porous packaging material and disposable pocket warmer |
JP2015003974A (en) * | 2013-06-20 | 2015-01-08 | Dic株式会社 | Adhesive and adhesive nonwoven fabric |
-
1997
- 1997-08-04 JP JP9221923A patent/JPH1150019A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011051242A (en) * | 2009-09-02 | 2011-03-17 | Nitto Lifetech Kk | Porous packaging material and disposable pocket warmer |
JP2015003974A (en) * | 2013-06-20 | 2015-01-08 | Dic株式会社 | Adhesive and adhesive nonwoven fabric |
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