JP2002086605A - Heat adhesive composite sheet - Google Patents
Heat adhesive composite sheetInfo
- Publication number
- JP2002086605A JP2002086605A JP2000285030A JP2000285030A JP2002086605A JP 2002086605 A JP2002086605 A JP 2002086605A JP 2000285030 A JP2000285030 A JP 2000285030A JP 2000285030 A JP2000285030 A JP 2000285030A JP 2002086605 A JP2002086605 A JP 2002086605A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- fiber
- layer
- sheet
- adhesive composite
- 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.)
- Granted
Links
Landscapes
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は熱接着性複合シート
に関し、さらに詳しくは微粉末などが通過し難く、かつ
加熱により容易に接合でき、製袋などの加工が容易であ
る通気性、強度、柔軟性等に優れた熱接着性複合シート
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-adhesive composite sheet, and more particularly, to air permeability, strength, and the like, which make it difficult to pass fine powder and the like, can be easily joined by heating, and can be easily processed such as bag making. The present invention relates to a heat-adhesive composite sheet having excellent flexibility and the like.
【０００２】[0002]
【従来の技術】従来より、シリカゲル等の乾燥剤、高分
子吸収剤、活性炭等の消臭剤などの粉体は不織布などの
袋状構造体に封入して用いられている（実公昭６０−９
３１号公報）。しかし、上記袋状構造体を用いた場合、
特に粒子の細かい微粉末を充填すると、粉洩れが生じる
などの問題があった。このため、実公平１−３０１６９
号公報には、微細連続気孔を有するシートを発熱組成物
収納袋として用いることが提案されている。しかし、こ
のような袋では粉洩れを解決できるが、通気性が不足す
るなどの問題があった。2. Description of the Related Art Conventionally, powders such as a desiccant such as silica gel, a polymer absorbent, and a deodorant such as activated carbon have been used by being enclosed in a bag-like structure such as a non-woven fabric. 9
No. 31). However, when using the bag-like structure,
In particular, when a fine powder having fine particles is filled, there is a problem that powder leakage occurs. For this reason,
Japanese Patent Application Laid-Open Publication No. H11-163873 proposes to use a sheet having fine continuous pores as a heat-generating composition storage bag. However, such bags can solve the problem of powder leakage, but have problems such as insufficient air permeability.
【０００３】[0003]
【発明が解決しようとする課題】本発明の課題は、上記
従来技術の問題を解決し、微粉末を通過させることがな
く、かつ通気性、熱シール強度に優れた熱接着性複合シ
ートを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a heat-adhesive composite sheet which does not allow fine powder to pass therethrough and has excellent air permeability and heat seal strength. Is to do.
【０００４】[0004]
【課題を解決するための手段】本発明者らは上記課題に
ついて鋭意検討した結果、特定の極細繊維層とこれより
太い繊維からなる熱融着性繊維層とをホットメルト系樹
脂を用いて接合することにより、特にホットメルト系樹
脂として特定の目付を有する繊維状シートを用いること
により、接合する両繊維層表面の繊維同志を繊維表面で
接合させることができ、これにより上記課題を達成でき
ることを見出し、本発明に到達したものである。本願で
特許請求される発明は以下のとおりである。Means for Solving the Problems As a result of intensive studies on the above-mentioned problems, the present inventors have joined a specific ultrafine fiber layer and a heat-fusible fiber layer made of thicker fibers using a hot melt resin. In particular, by using a fibrous sheet having a specific basis weight as a hot-melt resin, the fibers on both fiber layer surfaces to be bonded can be bonded on the fiber surface, thereby achieving the above object. The heading has reached the present invention. The invention claimed in the present application is as follows.
【０００５】（１）平均繊維径０．１〜５μｍの極細繊
維層と平均繊維径６〜３０μｍの熱融着性繊維層とをホ
ットメルト系樹脂層を介して接合したシートで、厚みが
０．１５〜０．６mmおよび通気性が５〜３５０cc／cm2
／sec であることを特徴とする熱接着性複合シート。 （２）平均繊維径０．１〜５μｍの極細繊維層および平
均繊維径６〜３０μｍの長繊維不織布を接合一体化した
上層部と、平均繊維径６〜３０μｍの熱融着繊維層から
なる下層部とをホットメルト系樹脂層を介して接合した
シートで、厚みが０．１５〜０．６mmおよび通気性が５
〜３５０cc／cm2 ／sec であることを特徴とする熱接着
性複合シート。 （３）平均繊維径６〜３０μｍの長繊維不織布と平均繊
維径６〜３０μｍの熱融着繊維層とを平均繊維径０．１
〜５μｍの極細繊維層およびホットメルト系樹脂層を介
して接合したシートで、厚みが０．１５〜０．６mmおよ
び通気性が５〜３５０cc／cm2 ／sec であることを特徴
とする熱接着性複合シート。 （４）前記ホットメルト系樹脂層がメルトブロー法によ
り形成した目付３〜３０ｇ／ｍ2 の繊維状シートである
ことを特徴とする（１）〜（３）のいずれかに記載の熱
接着性複合シート。(1) A sheet in which an ultrafine fiber layer having an average fiber diameter of 0.1 to 5 μm and a heat-fusible fiber layer having an average fiber diameter of 6 to 30 μm are joined via a hot-melt resin layer, and have a thickness of 0 mm. 15 to 0.6 mm and air permeability of 5 to 350 cc / cm 2
/ Sec., A heat-adhesive composite sheet. (2) An upper layer in which an ultrafine fiber layer having an average fiber diameter of 0.1 to 5 μm and a long-fiber nonwoven fabric having an average fiber diameter of 6 to 30 μm are joined and integrated, and a lower layer composed of a heat-fused fiber layer having an average fiber diameter of 6 to 30 μm. And a sheet having a thickness of 0.15 to 0.6 mm and air permeability of 5
A heat-adhesive composite sheet having a thickness of from about 350 cc / cm 2 / sec. (3) A long-fiber nonwoven fabric having an average fiber diameter of 6 to 30 μm and a heat-fused fiber layer having an average fiber diameter of 6 to 30 μm are mixed with an average fiber diameter of 0.1 to 0.1 μm.
A heat bonded sheet having a thickness of 0.15 to 0.6 mm and air permeability of 5 to 350 cc / cm 2 / sec, which is a sheet bonded through an ultra-fine fiber layer of about 5 μm and a hot melt resin layer. Composite sheet. (4) The heat-adhesive composite according to any one of (1) to (3), wherein the hot-melt resin layer is a fibrous sheet having a basis weight of 3 to 30 g / m 2 formed by a melt blowing method. Sheet.
【０００６】[0006]
【発明の実施の形態】本発明における熱接着性複合シー
トは、平均繊維径が０．１〜５μｍ、好ましくは０．３
〜３μｍの極細繊維層と、平均繊維径が６〜３０μｍ、
好ましくは１０〜２５μｍの比較的太い繊維からなる熱
融着性繊維層とをホットメルト系樹脂層を介して接合す
ることにより得られる。極細繊維層の平均繊維径が０．
１μｍ未満では繊維強度が低く連続生産性が低下し、５
μｍを超えると生産性は良好となるが繊維層の緻密性が
不足し、粉洩れが生じる。一方、熱融着性繊維層の平均
繊維径が６μｍ未満では得られる複合シートの強度が不
足し、３０μｍを超えると緻密性が不足する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The heat-adhesive composite sheet of the present invention has an average fiber diameter of 0.1 to 5 μm, preferably 0.3 to 5 μm.
~ 3μm ultrafine fiber layer, average fiber diameter 6 ~ 30μm,
Preferably, it is obtained by bonding a heat-fusible fiber layer made of relatively thick fibers of 10 to 25 μm via a hot melt resin layer. The average fiber diameter of the ultrafine fiber layer is 0.
If it is less than 1 μm, the fiber strength is low and continuous productivity is reduced,
If it exceeds μm, the productivity will be good, but the denseness of the fiber layer will be insufficient and powder will leak. On the other hand, if the average fiber diameter of the heat-fusible fiber layer is less than 6 μm, the strength of the obtained composite sheet is insufficient, and if it exceeds 30 μm, the denseness is insufficient.
【０００７】極細繊維層の繊維素材としては、ポリエチ
レン、ポリプロピレン、共重合ポリプロピレンなどのポ
リオレフイン系繊維、ポリエステル、共重合ポリエステ
ルなどのポリエステル系繊維、ポリアミド系繊維、ポリ
ウレタン系繊維、合成ゴム系繊維などを用いることがで
きる。極細繊維層の緻密化の程度は、目的とする微粒子
の保持性や耐粉洩れ性などの特性が得られるように目
付、厚みなどを適宜選定して決定するのが好ましい。一
般的には極細繊維層の目付は３〜７０ｇ／ｍ2 、好まし
くは５〜５０ｇ／ｍ2 の範囲とされる。Examples of the fiber material of the ultrafine fiber layer include polyolefin fibers such as polyethylene, polypropylene and copolymerized polypropylene, polyester fibers such as polyester and copolymerized polyester, polyamide fibers, polyurethane fibers and synthetic rubber fibers. Can be used. The degree of densification of the ultrafine fiber layer is preferably determined by appropriately selecting the basis weight, the thickness, and the like so as to obtain desired properties such as retention of the fine particles and resistance to powder leakage. Generally, the basis weight of the ultrafine fiber layer is in the range of 3 to 70 g / m 2 , preferably 5 to 50 g / m 2 .
【０００８】熱融着性繊維層の繊維素材としては、熱融
着性を有する素材であれば特に制限はなく、例えば線状
低密度ポリエチレン、低密度ポリエチレン、高密度ポリ
エチレン、エチレン−プロピレンランダム共重合体、ポ
リプロピレン、共重合ポリプロピレンなどのポリオレフ
イン系繊維、ポリアミド系繊維、共重合ポリエステル繊
維、鞘がポリエチレンで芯がポリエステル等で構成され
る芯鞘型複合繊維などを用いることができる。The fiber material of the heat-fusible fiber layer is not particularly limited as long as it has heat-fusibility. For example, linear low-density polyethylene, low-density polyethylene, high-density polyethylene, and ethylene-propylene random may be used. Polyolefin-based fibers such as polymers, polypropylene and copolymerized polypropylene, polyamide-based fibers, copolymerized polyester fibers, and core-sheath composite fibers having a sheath made of polyethylene and a core made of polyester or the like can be used.
【０００９】熱融着性繊維層は微粒子等の自動充填包装
機などでのヒートシール適性を付与するものであるた
め、該繊維層に用いられる繊維の融点は、上記極細繊維
層の繊維の融点よりも５℃以上、好ましくは１０℃以
上、さらに好ましくは１５℃以上低いことが加工適性の
点で好ましい。極細繊維層および熱融着性繊維層の層形
態には特に制限はなく、例えば不織布などの形態で用い
ることができる。また使用する繊維は長繊維、短繊維ま
たはこれらの混合繊維であってもよい。Since the heat-fusible fiber layer imparts heat-sealing aptitude to an automatic filling and packaging machine for fine particles or the like, the melting point of the fiber used in the fiber layer is determined by the melting point of the fiber in the ultrafine fiber layer. 5 ° C. or higher, preferably 10 ° C. or higher, and more preferably 15 ° C. or higher, from the viewpoint of processability. The layer forms of the ultrafine fiber layer and the heat-fusible fiber layer are not particularly limited, and may be used in the form of, for example, a nonwoven fabric. The fibers used may be long fibers, short fibers, or a mixture thereof.
【００１０】本発明に用いられるホットメルト系樹脂
は、上記極細繊維層と熱融着性繊維層の接合に用いら
れ、加熱すると溶融し、かつ常温で繊維形状が得られる
ものであればよく、融点は８０〜１５０℃のものが好ま
しい。例えば、エチレン−酢酸ビニール系共重合樹脂、
線状低密度ポリエチレン、低密度ポリエチレン、高密度
ポリエチレン、ポリプロピレン、共重合ポリプロピレン
などのポリオレフイン系樹脂、ポリアミド系樹脂、共重
合ポリエステル、直鎖状ポリエステルなどのポリエステ
ル系樹脂、合成ゴム系樹脂などを用いることができる。
ホットメルト系樹脂層による接合方法は、ホットメルト
系樹脂層を前記両繊維層の間に介在させて加熱圧着する
ことができるものであれば特に制限はないが、上記のホ
ットメルト系樹脂層はメルトブロー法により形成した、
目付３〜３０ｇ／ｍ2 、好ましくは５〜２５ｇ／ｍ2 の
繊維状シートを用いるのが好ましい。目付が３ｇ／ｍ2
未満では極細繊維層と熱融着性繊維層を接合できない場
合があり、３０ｇ／ｍ2 を超えると接合は強くなるが、
通気性の低下が大きくなる場合がある。The hot-melt resin used in the present invention may be any resin that can be used for bonding the above-mentioned ultrafine fiber layer and the heat-fusible fiber layer, melts when heated, and obtains a fiber shape at room temperature. The melting point is preferably 80 to 150 ° C. For example, ethylene-vinyl acetate copolymer resin,
Polyolefin resins such as linear low-density polyethylene, low-density polyethylene, high-density polyethylene, polypropylene, and copolymerized polypropylene; polyamide resins; polyester resins such as copolyesters and linear polyesters; and synthetic rubber resins. be able to.
The bonding method using the hot melt resin layer is not particularly limited as long as the hot melt resin layer can be heated and pressed by interposing the hot melt resin layer between the two fiber layers. Formed by melt blow method,
It is preferable to use a fibrous sheet having a basis weight of 3 to 30 g / m 2 , preferably 5 to 25 g / m 2 . The basis weight is 3 g / m 2
Below may not be able to bond the ultrafine fiber layer and the heat-fusible fiber layer, the bonding exceeds 30 g / m 2 is made stronger,
The decrease in air permeability may increase.
【００１１】極細繊維層と熱融着性繊維層のホットメル
ト系樹脂層による接合は、例えば、熱融着性繊維層の上
にホットメルト系樹脂をノズルから溶融状態で押し出
し、加熱空気により、噴射、開繊した繊維をシート状に
積層させ、さらにその上に極細繊維層を積層し、加熱ロ
ールで加圧して行われる。このような接合により、接着
層としての繊維状シートを介して極細繊維層と熱融着性
繊維層とを繊維表面同志で接合させることができるた
め、得られる複合シートの全面に均一な通気性を保持さ
せることができる。従って、従来のような部分的に穴を
開けた穴開きフイルムや熱エンボスなどで部分的に融着
させた場合のように、通気性の全くない部分を生じるこ
とがない。The joining of the ultrafine fiber layer and the heat-fusible fiber layer by the hot-melt resin layer is performed, for example, by extruding the hot-melt resin from the nozzle in a molten state onto the heat-fusible fiber layer, This is performed by laminating the jetted and opened fibers in a sheet shape, further laminating an ultrafine fiber layer thereon, and applying pressure by a heating roll. By such a bonding, the ultrafine fiber layer and the heat-fusible fiber layer can be bonded together on the fiber surface via the fibrous sheet as an adhesive layer, so that uniform air permeability is obtained over the entire surface of the obtained composite sheet. Can be held. Therefore, unlike the conventional case where the film is partially fused with a perforated film or a hot embossed film, a portion having no air permeability is generated.
【００１２】本発明において、熱接着性複合シートに
は、該複合シートの強度を向上させるために、極細繊維
層の片面または両面に平均繊維径６〜３０μｍ、好まし
くは８〜２０μｍの長繊維不織布をさらに接合一体化さ
せることができる。長繊維不織布の平均繊維系が６μｍ
未満では不織布強度が不足し易く、また３０μｍを超え
ると繊維間隙が大きくなり、不織布の緻密化を図りにく
くなる。極細繊維層と長繊維不織布との接合一体化の方
法には特に制限はないが、上記したホットメルト系樹脂
層を用いて接合一体化するのが好ましく、目付３〜３０
ｇ／ｍ2 のホットメルト系樹脂層からなる繊維状シート
を用いるのがより好ましい。In the present invention, the heat-adhesive composite sheet has a long-fiber nonwoven fabric having an average fiber diameter of 6 to 30 μm, preferably 8 to 20 μm on one or both sides of the ultrafine fiber layer in order to improve the strength of the composite sheet. Can be further joined and integrated. The average fiber system of long fiber nonwoven fabric is 6μm
If it is less than 30 μm, the strength of the nonwoven fabric tends to be insufficient, and if it exceeds 30 μm, the fiber gap becomes large, making it difficult to make the nonwoven fabric dense. There is no particular limitation on the method of joining and integrating the ultrafine fiber layer and the long-fiber nonwoven fabric, but it is preferable to join and integrate using the above-described hot-melt resin layer, and have a basis weight of 3 to 30.
It is more preferable to use a fibrous sheet comprising a hot melt resin layer of g / m 2 .
【００１３】長繊維不織布の繊維素材としては、ポリエ
チレン、ポリプロピレンなどのポリオレフイン系繊維、
ポリエチレンテレフタレートなどのポリエステル系繊
維、ナイロン−６、ナイロン−６６などのポリアミド系
繊維、共重合ポリエステル繊維、共重合ポリアミド繊
維、芯鞘型複合繊維などの一種または二種以上を用いる
ことができる。これらのうち、熱シール加工性を向上さ
せる点から、熱融着性繊維層との融点差が例えば２０℃
以上、好ましくは３０℃以上である高融点の繊維素材を
使用するのが好ましい。長繊維不織布は公知のスパンボ
ンド法、サーマルボンド法等で得ることができる。また
長繊維不織布の目付は、強度、通気性等の点から１０〜
６０ｇ／ｍ2 の範囲とするのが好ましく、より好ましく
は１５〜５０ｇ／ｍ2 である。As the fiber material of the long-fiber nonwoven fabric, polyolefin-based fibers such as polyethylene and polypropylene;
One or more of polyester fibers such as polyethylene terephthalate, polyamide fibers such as nylon-6 and nylon-66, copolyester fibers, copolyamide fibers, and core-sheath composite fibers can be used. Among these, from the viewpoint of improving the heat sealability, the difference in melting point from the heat-fusible fiber layer is, for example, 20 ° C.
As described above, it is preferable to use a fiber material having a high melting point of preferably 30 ° C. or higher. The long-fiber nonwoven fabric can be obtained by a known spun bonding method, a thermal bonding method, or the like. The basis weight of the long-fiber nonwoven fabric is 10 to 10 from the viewpoint of strength, air permeability, etc.
The range is preferably 60 g / m 2 , more preferably 15 to 50 g / m 2 .
【００１４】また、本発明における熱接着性複合シート
の厚みは、０．１５〜０．６mm、好ましくは０．２〜
０．４mmとされる。複合シートの厚みが０．１５mm未満
では強度が不足し、０．４mmを超えると嵩高くなり、柔
軟性が不足する。また熱接着性複合シートの通気性は、
５〜３５０cc／cm2 ／sec 、好ましくは１０〜２５０cc
／cm2 ／sec とされる。複合シートの通気性が５cc／cm
2 ／sec未満ではシートの通気性が不足するため、充填
された微粒子の性能が得られない。また３５０cc／cm2
／sec を超えると通気性はよくなるが、複合シートの緻
密性が不足する。該複合シートの目付は、４０〜２００
ｇ／ｍ2 の範囲とするのが好ましく、より好ましくは、
５０〜１５０ｇ/ ｍ2 である。なお、上記通気性はＪＩ
Ｓ−Ｌ−１０９６のフラジュール形法により測定したも
のである。本発明における熱接着性複合シートは、繊維
層の繊維の太さ、繊維層の繊維表面での接合、繊維の融
点差が考慮されているため、微粒子の保持性に優れ、粉
洩れを低減でき、また柔軟性、通気性、熱シール強度に
優れ、袋状の連続充填加工が可能となる。The thickness of the heat-adhesive composite sheet in the present invention is 0.15 to 0.6 mm, preferably 0.2 to 0.6 mm.
0.4 mm. If the thickness of the composite sheet is less than 0.15 mm, the strength is insufficient, and if it exceeds 0.4 mm, the composite sheet becomes bulky and lacks flexibility. The air permeability of the heat-adhesive composite sheet is
5-350 cc / cm 2 / sec, preferably 10-250 cc
/ Cm 2 / sec. The air permeability of the composite sheet is 5cc / cm
If it is less than 2 / sec, the air permeability of the sheet is insufficient, and the performance of the filled fine particles cannot be obtained. 350 cc / cm 2
If it exceeds / sec, the air permeability is improved, but the denseness of the composite sheet is insufficient. The basis weight of the composite sheet is 40 to 200
g / m 2 , and more preferably,
It is a 50~150g / m 2. In addition, the above-mentioned air permeability is JI
It was measured by the FL-1096 Frajur method. The heat-adhesive composite sheet according to the present invention is excellent in the retention of fine particles and can reduce powder leakage because the thickness of the fibers in the fiber layer, the bonding of the fiber layers on the fiber surface, and the difference in the melting points of the fibers are considered. In addition, it is excellent in flexibility, air permeability, and heat sealing strength, and enables continuous filling in a bag shape.
【００１５】[0015]
【実施例】以下、本発明を実施例によりさらに詳細に説
明する。なお、例中の特性は下記の方法で測定した値で
ある。 (1) 目付：試料２０cm×２５cmを切り取り重量を測定
し、目付に換算する。 (2) 厚み：直径１０mmの加圧子で荷重１０ｋｐａにて任
意の１０カ所を測定し、その平均値で示す（ＪＩＳ−Ｌ
−１９０６）。 (3) 通気性：ＪＩＳ−Ｌ−１０９６に準じてフラジュー
ル形法で3 カ所測定し、その平均値で示す。 (4) シール強度：圧力９．８ｋｐａ／cm2、時間１秒、
接合形状５mm×３０mmで温度を決め、試料をシール加工
し、引張強度測定機で、速度１０cm/min、つかみ間隔１
０cmで３カ所測定し、その平均値で示す。The present invention will be described in more detail with reference to the following examples. The characteristics in the examples are values measured by the following method. (1) Basis weight: A sample of 20 cm × 25 cm is cut out, the weight is measured, and the basis weight is converted. (2) Thickness: Measure an arbitrary 10 locations with a load of 10 kpa using a pressure gauge with a diameter of 10 mm and show the average value (JIS-L
-1906). (3) Air permeability: Measured at three places by the Frajur method according to JIS-L-1096, and the average value is shown. (4) Seal strength: pressure 9.8 kpa / cm 2 , time 1 second,
Determine the temperature with a joint shape of 5 mm × 30 mm, seal the sample, use a tensile strength measuring machine, speed 10 cm / min, gripping interval 1
The measurement was made at three points at 0 cm, and the average value was shown.
【００１６】実施例１ 公知のスパンボンド法により平均繊維径１６μｍ、目付
３０g/ｍ2 のポリエステル長繊維不織布（融点２５６
℃）と、平均繊維径２．１μｍ、目付３０g/ｍ2のポリ
プロピレン極細繊維不織布（融点１６５℃）と、平均繊
維径２０μｍ、目付３０g/ｍ2 の低密度ポリエチレン熱
融着性繊維不織布（融点１１５℃）とを作製した。次い
で、エチレン−酢酸ビニール系共重合樹脂を用いて温度
１４０℃でメルトブロー方式により繊維状シートを目付
５ｇ／ｍ2 の条件で形成しながら長繊維不織布と極細繊
維不織布とを接合し、その後、該極細繊維不織布と熱融
着性繊維不織布とを同様に接合して本発明の熱接着性複
合シートを得た。該複合シートは、目付１００ｇ／
ｍ2 、厚み０．３５mm、通気性３５cc／cm2／sec であ
り、温度１５０℃で熱シール加工したときのシール強度
は１１．８Ｎあった。この熱接着性複合シートを用いて
粒径１〜１００μｍのヤシガラ活性炭１０ｇを自動充填
機により三方シールの袋を作製したが、製袋加工性が良
好で、しかも袋からの粉洩れがなかった。Example 1 A polyester long-fiber nonwoven fabric having an average fiber diameter of 16 μm and a basis weight of 30 g / m 2 by a known spunbonding method (melting point: 256
° C), a polypropylene ultrafine fiber nonwoven fabric having an average fiber diameter of 2.1 μm and a basis weight of 30 g / m 2 (melting point 165 ° C), and a low density polyethylene heat-fusible fiber nonwoven fabric having an average fiber diameter of 20 μm and a basis weight of 30 g / m 2 (melting point 115 ° C.). Then, ethylene - using vinyl acetate copolymer resin bonded to a temperature 140 ° C. in a melt-blowing method by fibrous sheet having a basis weight 5 g / m long fiber nonwoven fabric while forming a two conditions as microfibrous non-woven fabric, then the The ultrafine fiber nonwoven fabric and the heat-fusible fiber nonwoven fabric were similarly joined to obtain a heat-adhesive composite sheet of the present invention. The composite sheet has a basis weight of 100 g /
m 2 , thickness 0.35 mm, air permeability 35 cc / cm 2 / sec, and seal strength when heat-sealed at a temperature of 150 ° C. was 11.8 N. Using this heat-adhesive composite sheet, a three-sided sealed bag was prepared with an automatic filling machine from 10 g of coconut husk activated carbon having a particle size of 1 to 100 μm. The bag-making processability was good, and there was no powder leakage from the bag.
【００１７】実施例２ 平均繊維径が１．２μｍ、目付５０ｇ／ｍ2 のポリエス
テル極細繊維不織布（融点２５０℃）と、平均繊維径が
２５μｍ、目付３０ｇ／ｍ2 で芯部がポリエチレンテレ
フタレート（融点２６０℃）、鞘部が高密度ポリエチレ
ン（融点１３０℃）からなる芯鞘型複合繊維不織布を、
線状低密度ポリエチレンのホットメルト系樹脂を用いて
メルトブロー方式により繊維状シートを形成しながら、
目付８ｇ／ｍ2 の条件で接合して本発明の熱接着性複合
シートを得た。この複合シートの厚みは０．２５mm、通
気性が２３cc／cm2 ／sec であった。この熱接着性複合
シートを用いて実施例１と同様に三方シールの袋を作製
したが、製袋加工性が良好で、しかも袋からの粉漏れが
なかった。[0017] Example 2 average fiber diameter of 1.2 [mu] m, and a polyester superfine fiber nonwoven fabric having a mass per unit area of 50 g / m 2 (melting point 250 ° C.), an average fiber diameter of 25 [mu] m, basis weight 30 g / m 2 by the core polyethylene terephthalate (melting point 260 ° C), a sheath-core composite fiber nonwoven fabric whose sheath portion is made of high-density polyethylene (melting point 130 ° C),
While forming a fibrous sheet by a melt blow method using a hot melt resin of linear low density polyethylene,
Bonding was performed under the condition of a basis weight of 8 g / m 2 to obtain a heat-adhesive composite sheet of the present invention. The thickness of this composite sheet was 0.25 mm, and the air permeability was 23 cc / cm 2 / sec. Using this heat-adhesive composite sheet, a three-sided sealed bag was produced in the same manner as in Example 1, but the bag-making processability was good and there was no powder leakage from the bag.
【００１８】[0018]
【発明の効果】本発明の熱接着性複合シートは、極細繊
維層の緻密構造と、熱融着性繊維層の低融点繊維とを、
ホットメルト系樹脂層で接合しているため、厚みが薄
く、強度があり、通気性が高く、粉洩れが生じ難く、か
つ微粒子の捕集性（バリヤー性）に優れ、炭、活性炭、
セラミックス、シリカゲル、鮮度保持剤、乾燥剤、消臭
剤、カイロなどの包装資材、クリーンルーム、農薬散布
などの作業服、マスク、メデカル用資材、フイルター材
などに好適に使用することができる。The heat-adhesive composite sheet of the present invention comprises a dense structure of an ultrafine fiber layer and a low melting point fiber of a heat-fusible fiber layer.
Because it is joined with a hot melt resin layer, it is thin, strong, has high air permeability, hardly leaks powder, and has excellent collecting property (barrier property) of fine particles.
It can be suitably used for packaging materials such as ceramics, silica gel, freshness preservatives, desiccants, deodorants, warmers, etc., work clothes such as clean rooms and spraying of agricultural chemicals, masks, materials for medical use, and filter materials.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4C080 AA05 BB02 CC01 HH05 JJ05 KK08 LL10 MM05 NN26 NN27 NN28 QQ03 4F100 AK06B AK07A AK41C AK68G BA02 BA03 BA10A BA10C BA15 CB03 DG01A DG01B DG15A DG15B DG15C GB15 JA20A JA20B JA20C JD02 JL12B YY00 YY00A YY00B YY00C 4L047 AB03 AB08 BA09 BC00 CA02 CA05 CA19 CB08 CC16 EA05 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 4C080 AA05 BB02 CC01 HH05 JJ05 KK08 LL10 MM05 NN26 NN27 NN28 QQ03 4F100 AK06B AK07A AK41C AK68G BA02 BA03 BA10A BA10C BA15 CB03 DG01A20 J15 DG01B20 DG01B DG20 YY00C 4L047 AB03 AB08 BA09 BC00 CA02 CA05 CA19 CB08 CC16 EA05
Claims (4)
と平均繊維径６〜３０μｍの熱融着性繊維層とをホット
メルト系樹脂層を介して接合したシートで、厚みが０．
１５〜０．６mmおよび通気性が５〜３５０cc／cm2 ／se
c であることを特徴とする熱接着性複合シート。1. A sheet in which an ultrafine fiber layer having an average fiber diameter of 0.1 to 5 μm and a heat-fusible fiber layer having an average fiber diameter of 6 to 30 μm are joined via a hot-melt resin layer.
15 to 0.6 mm and air permeability of 5 to 350 cc / cm 2 / se
c. A heat-adhesive composite sheet, characterized by being c.
および平均繊維径６〜３０μｍの長繊維不織布を接合一
体化した上層部と、平均繊維径６〜３０μｍの熱融着繊
維層からなる下層部とをホットメルト系樹脂層を介して
接合したシートで、厚みが０．１５〜０．６mmおよび通
気性が５〜３５０cc／cm2 ／sec であることを特徴とす
る熱接着性複合シート。2. An upper layer in which an ultrafine fiber layer having an average fiber diameter of 0.1 to 5 μm and a long-fiber nonwoven fabric having an average fiber diameter of 6 to 30 μm are joined and integrated, and a heat-fused fiber layer having an average fiber diameter of 6 to 30 μm. A sheet having a thickness of 0.15 to 0.6 mm and a gas permeability of 5 to 350 cc / cm 2 / sec. Sheet.
と平均繊維径６〜３０μｍの熱融着繊維層とを平均繊維
径０．１〜５μｍの極細繊維層およびホットメルト系樹
脂層を介して接合したシートで、厚みが０．１５〜０．
６mmおよび通気性が５〜３５０cc／cm2 ／sec であるこ
とを特徴とする熱接着性複合シート。3. A long-fiber nonwoven fabric having an average fiber diameter of 6 to 30 μm and a heat-fused fiber layer having an average fiber diameter of 6 to 30 μm are interposed via an ultrafine fiber layer having an average fiber diameter of 0.1 to 5 μm and a hot-melt resin layer. Sheet with a thickness of 0.15-0.
A heat-adhesive composite sheet having a thickness of 6 mm and an air permeability of 5 to 350 cc / cm 2 / sec.
ー法により形成した目付３〜３０ｇ／ｍ2 の繊維状シー
トであることを特徴とする請求項１〜３のいずれかに記
載の熱接着性複合シート。4. The heat-adhesive composite according to claim 1, wherein the hot-melt resin layer is a fibrous sheet having a basis weight of 3 to 30 g / m 2 formed by a melt blowing method. Sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000285030A JP4748838B2 (en) | 2000-09-20 | 2000-09-20 | Thermal adhesive composite sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000285030A JP4748838B2 (en) | 2000-09-20 | 2000-09-20 | Thermal adhesive composite sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002086605A true JP2002086605A (en) | 2002-03-26 |
| JP4748838B2 JP4748838B2 (en) | 2011-08-17 |
Family
ID=18769162
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000285030A Expired - Fee Related JP4748838B2 (en) | 2000-09-20 | 2000-09-20 | Thermal adhesive composite sheet |
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| Country | Link |
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| JP (1) | JP4748838B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005231151A (en) * | 2004-02-18 | 2005-09-02 | Maruhachi Kk | Reinforcing fiber orientation sheet for composite material, multi-axial laminated reinforcing fiber sheet using it and its manufacturing method |
| JP2006218289A (en) * | 2005-01-11 | 2006-08-24 | Japan Vilene Co Ltd | Nonwoven cloth wiper |
| JP2007307729A (en) * | 2006-05-16 | 2007-11-29 | Asahi Kasei Fibers Corp | Moisture absorbable sheet |
| WO2008111294A1 (en) * | 2007-03-15 | 2008-09-18 | Kuraray Co., Ltd. | Laminated fabric |
| JP2008307469A (en) * | 2007-06-14 | 2008-12-25 | Asahi Kasei Fibers Corp | Filter for food product and food product-enclosing bag using the same |
| JP2009022924A (en) * | 2007-07-23 | 2009-02-05 | Asahi Kasei Fibers Corp | Hygroscopic and deodorant sheet |
| JP2011237157A (en) * | 2010-05-10 | 2011-11-24 | Nippon Air Filter Kk | Total heat exchange element of heat exchanger |
| JP2013040290A (en) * | 2011-08-18 | 2013-02-28 | Kuraray Co Ltd | Adhesive sheet |
| JP2013177706A (en) * | 2012-02-28 | 2013-09-09 | Teijin Ltd | Heat-bonding fiber sheet and method for producing the same |
| JP2015080899A (en) * | 2013-10-22 | 2015-04-27 | ユニチカ株式会社 | Method for producing three-layer nonwoven fabric |
| JP2015189224A (en) * | 2014-03-29 | 2015-11-02 | シンワ株式会社 | Laminated sheet and method of producing laminated sheet |
| JP2016156114A (en) * | 2015-02-24 | 2016-09-01 | 光弘 高橋 | Nanofiber sheet member and product for various uses using the same |
| US10464285B2 (en) | 2016-01-29 | 2019-11-05 | Panasonic Intellectual Property Management Co., Ltd. | Laminate and manufacturing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6194472B2 (en) * | 2013-06-20 | 2017-09-13 | パナソニックＩｐマネジメント株式会社 | Partition member for total heat exchange element, total heat exchange element and total heat exchange type ventilator using the same |
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| JP2008307469A (en) * | 2007-06-14 | 2008-12-25 | Asahi Kasei Fibers Corp | Filter for food product and food product-enclosing bag using the same |
| JP2009022924A (en) * | 2007-07-23 | 2009-02-05 | Asahi Kasei Fibers Corp | Hygroscopic and deodorant sheet |
| JP2011237157A (en) * | 2010-05-10 | 2011-11-24 | Nippon Air Filter Kk | Total heat exchange element of heat exchanger |
| JP2013040290A (en) * | 2011-08-18 | 2013-02-28 | Kuraray Co Ltd | Adhesive sheet |
| JP2013177706A (en) * | 2012-02-28 | 2013-09-09 | Teijin Ltd | Heat-bonding fiber sheet and method for producing the same |
| JP2015080899A (en) * | 2013-10-22 | 2015-04-27 | ユニチカ株式会社 | Method for producing three-layer nonwoven fabric |
| JP2015189224A (en) * | 2014-03-29 | 2015-11-02 | シンワ株式会社 | Laminated sheet and method of producing laminated sheet |
| JP2016156114A (en) * | 2015-02-24 | 2016-09-01 | 光弘 高橋 | Nanofiber sheet member and product for various uses using the same |
| US10464285B2 (en) | 2016-01-29 | 2019-11-05 | Panasonic Intellectual Property Management Co., Ltd. | Laminate and manufacturing method thereof |
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