JP2019083999A - Nonwoven fabric bag with handle - Google Patents
Nonwoven fabric bag with handle Download PDFInfo
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- JP2019083999A JP2019083999A JP2017213962A JP2017213962A JP2019083999A JP 2019083999 A JP2019083999 A JP 2019083999A JP 2017213962 A JP2017213962 A JP 2017213962A JP 2017213962 A JP2017213962 A JP 2017213962A JP 2019083999 A JP2019083999 A JP 2019083999A
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Abstract
Description
本発明は、把手付き不織布袋に関する。詳しくは、把手と袋本体をホットメルト接着剤で接着することでヒートシールによる結合に比べてはるかに強い強度で結合した把手付き不織布袋に関する。 The present invention relates to a non-woven bag with a handle. More specifically, the present invention relates to a non-woven bag with a handle which is joined with a hot melt adhesive and bonded to a handle and a bag body with much stronger strength than a heat-sealed bond.
従来、手に携えて荷物を持ち運ぶときには把手付きの紙袋や布袋が使用されている。特に、女性はハンドバックなどの小さい鞄を持ち歩くことが多いため、外出先に荷物を持っていく場合、又は外出先で増えた荷物などを持ち返る場合などに、把手付きの紙袋や布袋がよく使用される。
把手付きの紙袋は軽いうえ、折り畳むと薄くなるので携帯に便利であるが、その反面、強度が弱く形が決まってしまうので、重い荷物や嵩張る荷物を運ぶには不向きであった。それに対し、把手付きの布袋は強度が高く、荷物の形にあわせて形が変化できるので、嵩張る荷物や重い荷物を運ぶのに適しているものの、袋自体が重く、さらに小さく折り畳めないため、持ち運びに不便であるという問題がある。さらに、布袋は紙袋などと比較して値段が高く、商品の購入者に無償で提供する商品袋としては適さない。
一方、ポリオレフィンフィルム製の買物袋、具体的にはスーパー等のレジで用いられる所謂レジ袋の代わりとして、不織布製の買物袋が提案されている（特許文献１）。
特許文献１に記載されている買物袋はポリオレフィン不織布をヒートシールにより結合して製造されている。
Conventionally, when carrying a package by hand, a paper bag or cloth bag with a handle is used. In particular, women often carry small bags such as handbags, so when carrying luggage to where they go, or when returning luggage that has grown outside, etc., paper bags and bags with handles are often used Be done.
Paper bags with handles are light and thin when folded, so they are convenient for carrying, but they are not suitable for carrying heavy or bulky packages because their strength is weak and their shape is fixed. On the other hand, a sack with a handle is high in strength and can be changed in shape according to the shape of the load, so it is suitable for carrying bulky loads and heavy loads, but the bag itself is heavy and can not be folded smaller. Is inconvenient. Furthermore, cloth bags are more expensive than paper bags and the like, and are not suitable as product bags provided free of charge to purchasers of goods.
On the other hand, non-woven fabric shopping bags have been proposed as substitutes for polyolefin film shopping bags, specifically, so-called plastic bags used in cash registers such as supermarkets (Patent Document 1).
The shopping bag described in Patent Document 1 is manufactured by heat-sealing a polyolefin non-woven fabric.
そして、特許文献１に記載の買物袋は、軽量かつコンパクトである上に、耐荷重性能に関して従来のレジ袋等のポリオレフィンフィルム製の買物袋に比して大変優れたものである。
しかしながら、不織布製のこの種の買物袋については、耐荷重性能、特に多数回繰り返し使用時における耐荷重性能に関して、更なる改良が要求されている。また買物袋として利用される把手付きの不織布袋は、外出時に持ち歩くことが多いため遥かに多くの使用回数が想定され、従って、とりわけ、特に把手と袋本体との結合には、より高い強度が要求される。
ここで、不織布からなる把手及び袋本体をヒートシールにより結合したのみでは、強度不足となり、望ましい把手付きの不織布袋を製造できない可能性がある。
Further, the shopping bag described in Patent Document 1 is lightweight and compact, and is very superior to a shopping bag made of a polyolefin film such as a conventional plastic bag in terms of load bearing performance.
However, for this type of shopping bag made of non-woven fabric, further improvement is required with respect to load bearing performance, in particular with respect to load bearing performance after repeated use. Also, non-woven bags with grips used as shopping bags are likely to be used many more times when going out, so they are expected to be much more frequent, thus, in particular, higher strength, especially for the connection between the grip and the bag body. Required
Here, if the handle and the bag body made of non-woven fabric are only joined by heat sealing, the strength may be insufficient and it may not be possible to manufacture a desired non-woven fabric bag with a handle.
そこで、ヒートシール部分をヒートシールより強度のより高い縫着によって結合することが考えられる。しかしながら、不織布を縫製した不織布袋は人がミシン等を用いて不織布シートを縫い合わせて製造するので、製造に手間と時間がかかり、製造コストが高くなってしまうという問題がある。そのため、縫製した不織布袋は相対的に高価なものとなってしまうところが不利な点である。 Therefore, it is conceivable to bond the heat-sealed portion by sewing which is higher in strength than the heat seal. However, since a non-woven fabric bag in which non-woven fabric is sewn is manufactured by a person sewing a non-woven fabric sheet by using a sewing machine or the like, it takes time and effort for manufacturing and there is a problem that the manufacturing cost becomes high. Therefore, the disadvantage is that the sewn nonwoven fabric bag is relatively expensive.
本発明は、斯かる事情を考慮してなされたものであって、その目的とするところはホットメルト接着剤によりヒートシールよりもはるかに強い強度で把手と不織布袋が結合している袋でかつ製造コストの廉価な把手付き不織布袋を提供することである。 The present invention has been made in consideration of such circumstances, and the object of the present invention is a bag in which a handle and a non-woven fabric bag are joined with much stronger strength than a heat seal by a hot melt adhesive and It is an object of the present invention to provide an inexpensive non-woven bag with a handle that is inexpensive to manufacture.
本発明者は上記課題を解決するために鋭意検討を行った結果、ポリプロピレン不織布からなる袋本体とポリプロピレン不織布からなる把手の取付部の結合に８０℃乃至１５５℃の軟化点及び１０００ｍＰａ・Ｓ（１８０℃）乃至２００００ｍＰａ・Ｓ（１８０℃）の粘度を有するホットメルト接着剤を採用することで、ホットメルト接着剤が不織布の繊維の隙間に染み込んでいき、袋本体のポリピレン不織布の内部並びに把手の内部にまでホットメルト接着剤の浸透固化域が形成され、縫着せずとも十分な強度を有する把手付き不織布袋となることを見出し、本発明を完成させた。 As a result of intensive investigations to solve the above problems, the inventor of the present invention has found that a softening point of 80 ° C. to 155 ° C. and 1000 mPa · S (180 ° C. to 155 ° C. C.) By using a hot melt adhesive having a viscosity of 20000 mPa · S (180 ° C.), the hot melt adhesive penetrates into the interstices of the fibers of the non-woven fabric, and the interior of the polypyrene non-woven fabric of the bag body and the interior of the handle In the present invention, it has been found that the penetration and solidification area of the hot melt adhesive is formed, and a non-woven bag with a handle having sufficient strength without sewing is obtained, thereby completing the present invention.
即ち、本発明は、
（１）ポリプロピレン不織布からなる袋本体の開口周縁部に、ポリプロピレン不織布からなる把手を取りつけてなる不織布袋において、
該袋本体と該把手の取付部は、これら両者の接触域から袋本体のポリピレン不織布の内部並びに把手の内部にまで亘って、８０℃乃至１５５℃の軟化点及び１０００ｍＰａ・Ｓ（１８０℃）乃至２００００ｍＰａ・Ｓ（１８０℃）の粘度を有するホットメルト接着剤の浸透固化域を形成してなることを特徴とする把手付き不織布袋。
（２）袋本体の開口周縁部は、袋本体の開口端部が内側又は外側に折り曲げられ、ヒートシールにより結合された二層重ね構造となっている前記（１）に記載の把手付き不織布
（３）前記把手は、帯状物を二重に重ね、縫着されるかまたはホットメルト接着剤により接着されてなる前記（１）又は前記（２）に記載の把手付き不織布袋。
（４）前記袋本体及び前記把手に用いるポリプロピレン不織布の厚みは、３５ｇ／ｍ２乃至３５０ｇ／ｍ２以下である前記（１）乃至前記（３）のいずれか一つに記載の把手付き不織布袋。
（５）前記把手は二本を左右一対として前記取付部に接着されてなる前記（１）乃至前記（４）のいずれか一つに記載の把手付き不織布袋。
That is, the present invention
(1) A non-woven fabric bag having a handle made of polypropylene non-woven fabric attached to the opening peripheral portion of the bag main body made of polypropylene non-woven fabric,
The bag body and the attachment portion of the handle extend from 80 ° C. to 155 ° C. and 1000 mPa · s (180 ° C.) from the contact area of the two to the inside of the polypyrene nonwoven of the bag body and the inside of the handle. What is claimed is: 1. A non-woven bag with a handle characterized in that a permeation solidified area of a hot melt adhesive having a viscosity of 20000 mPa · s (180 ° C.) is formed.
(2) The non-woven fabric with a handle according to the above (1), wherein the opening edge of the bag body has a two-layer overlapping structure in which the opening end of the bag body is bent inward or outward and is bonded by heat sealing. 3) The non-woven bag with a handle according to the above (1) or (2), wherein the handle is a double layer of strip and is sewed or adhered by a hot melt adhesive.
(4) The non-woven bag with a handle according to any one of (1) to (3), wherein the thickness of the polypropylene non-woven fabric used for the bag body and the handle is 35 g / m 2 to 350 g / m 2 or less. .
(5) The non-woven fabric bag with a handle according to any one of (1) to (4), wherein the handle is adhered to the attachment portion as a pair of right and left pairs.
本発明の把手付き不織布袋は、袋本体と把手との結合部分においてホットメルト接着剤の浸透固化域を形成されているのでヒートシールよりもはるかに強い強度で袋本体と把手が結合された袋が提供される。さらに、袋本体等のヒートシール加工の際に発生する熱の活用により、ホットメルト接着剤で袋本体と把手とを同時に結合することができるので、縫着のように一枚ずつ人の手でミシン縫いをする必要がなくなり、製造コストを低減できる。 The non-woven bag with handle according to the present invention is a bag in which the bag body and the handle are combined with much stronger strength than the heat seal since the permeation solidified area of the hot melt adhesive is formed at the joint portion of the bag body and the handle. Is provided. Furthermore, by utilizing heat generated during heat seal processing of the bag body etc., the hot melt adhesive can simultaneously connect the bag body and the handle, so that one by one, like sewing, with a human hand There is no need to sew sewing and manufacturing costs can be reduced.
更に詳細に本発明を説明する。
本発明の把手付き不織布袋は、例えば略線対称形状の、ポリプロピレン不織布シートを、その対称線に沿って二つ折りに畳み、その折り目部位を含むシート部分で袋底を形成するとともに、該二つ折りにされた互いに対向する不織布シートの左右両側について側縁部同士を結合し、袋の開口部を形成し袋状とした袋本体と、該袋本体の開口周縁部に取付けてなる把手と、該開口周縁部の取付部にこれら両者の接触域から袋本体のポリピレン不織布の内部並びに把手の内部にまで亘って形成されたホットメルト接着剤の浸透固化域を有
する。
The invention will be described in more detail.
The nonwoven fabric bag with handle of the present invention folds a polypropylene nonwoven fabric sheet having, for example, a substantially line symmetrical shape in two along the line of symmetry, and forms a bag bottom with the sheet portion including the fold portion, The side edges of the non-woven fabric sheet facing each other are joined to each other on the left and right sides to form the opening of the bag and the bag is formed into a bag body, the handle attached to the opening periphery of the bag body, The mounting portion of the opening peripheral portion has a permeation solidified area of the hot melt adhesive which is formed from the contact area of the both to the inside of the polypyrene nonwoven fabric of the bag body and the inside of the handle.
本発明の把手付き不織布袋に用いられる不織布シートは、強度、成形性、ヒートシール等による結合性（溶着性）がよく、製造コストの観点から布と比較して安価なポリプロピレン不織布を使用することが好適である。 The non-woven fabric sheet used for the non-woven fabric bag with a handle of the present invention has good bondability (weldability) by strength, formability, heat seal etc., and uses inexpensive polypropylene non-woven fabric in comparison with cloth from the viewpoint of manufacturing cost. Is preferred.
袋本体は、略線対称形状の、ポリプロピレン不織布シートを、その対称線に沿って二つ折りに畳み、その折り目部位を含むシート部分で袋底を形成するとともに、該二つ折りにされた互いに対向する不織布シートの左右両側について側縁部同士を結合することにより、袋状としたもので、開口部を持つものであればよい。 The bag main body folds a substantially non-linearly symmetrical polypropylene non-woven sheet in two along the line of symmetry, and forms a bag bottom with the sheet portion including the fold portion, and the two folds are opposed to each other The side edges may be joined to each other on the left and right sides of the non-woven fabric sheet to form a bag, as long as it has an opening.
把手は、袋本体と同じくポリプロピレン不織布シートから形成され、不織布袋の用途及び大きさによって適宜調整できる。把手部分を手で掴む、又は腕あるいは肩にかけられるように長さを調節したり、持ちやすいように幅を調節したりすることができる。 The handle is formed of a polypropylene non-woven sheet as in the bag body, and can be appropriately adjusted depending on the application and size of the non-woven bag. The handle portion can be gripped by hand or adjusted in length to be able to rest on the arms or shoulders, or adjusted in width for ease of holding.
本発明の把手付き不織布袋に使用されるホットメルト接着剤としては、エチレン−酢酸ビニル共重合体（ＥＶＡ）系接着剤が挙げられる。ＥＶＡ系接着剤は、エチレンと酢酸ビニルの共重合比（１５％乃至４０％）、分子量（ＭＩ：５乃至４００）によって接着剤の軟化点、溶解温度、ガラス転移点、接着性及び溶解粘度が調整できる。本発明に使用するＥＶＡ系接着剤は、その軟化点が、８０℃乃至１５５℃でかつ、その粘度が１０００ｍＰａ・Ｓ（１８０℃）乃至２００００ｍＰａ・Ｓ（１８０℃）に調整した接着剤であると、袋本体及び把手を構成するポリプロピレン不織布の表面に該接着剤を塗布し、そして熱を加えた際に袋本体のポリピレン不織布の内部並びに把手の内部にまで亘って浸透することができる。 As a hot melt adhesive used for the non-woven bag with a handle of the present invention, an ethylene-vinyl acetate copolymer (EVA) -based adhesive can be mentioned. EVA based adhesives have softening point, melting temperature, glass transition temperature, adhesiveness and melting viscosity of the adhesive depending on the copolymerization ratio of ethylene and vinyl acetate (15 to 40%) and molecular weight (MI: 5 to 400) It can be adjusted. The EVA adhesive used in the present invention has an softening point of 80 ° C. to 155 ° C. and a viscosity of 1000 mPa · S (180 ° C.) to 20000 mPa · S (180 ° C.). The adhesive can be applied to the surface of the polypropylene non-woven fabric constituting the bag body and the handle, and when heat is applied, it can penetrate into the interior of the polypyrene non-woven fabric of the bag body as well as the inside of the handle.
本発明の把手付き不織布袋において、袋本体の開口周縁部は、袋本体の開口端部が内側又は外側に折り曲げられ、ヒートシールにより結合された二層重ね構造となっていることが好ましい。二層重ね構造によりホットメルト接着剤が二層に亘り浸透固化域を形成することで袋本体と把手の結合がより強固になり好ましい。 In the non-woven bag with a handle of the present invention, it is preferable that the opening edge of the bag body has a two-layered structure in which the open end of the bag body is bent inward or outward and joined by heat sealing. The two-layered structure is preferable because the hot-melt adhesive forms an infiltration-solidified area across the two layers, and the bond between the bag body and the handle becomes stronger.
ヒートシールの方法としては、インパルス式、熱風式、熱板式、コテ式等が知られているが、本発明では、好ましくはインパルス式ヒートシールを採用する。インパルス式ヒートシールは、機構が簡単で、制御が容易であり、加工時のみ短時間加熱するだけで不織布を結合できるので、低コストで行えて好ましい。 As a method of heat sealing, impulse type, hot air type, hot plate type, iron type, etc. are known, but in the present invention, impulse type heat seal is preferably adopted. The impulse heat seal is preferable because it has a simple mechanism, is easy to control, and can bond the non-woven fabric only by heating for a short time only during processing.
開口端部を内側又は外側に折り曲げ、ヒートシールにより結合して二層重ね構造を作る工程と同時に、ヒートシール加工の際に発生する熱の活用により、ホットメルト接着剤で袋本体と把手を結合する工程を行えば、工程数を減らすことができ、製造コストを低減できる。 Simultaneously with the process of bending the open end inward or outward and bonding by heat sealing to form a double-layered structure, the hot melt adhesive bonds the bag body and the handle by utilizing heat generated during heat sealing. The number of processes can be reduced and the manufacturing cost can be reduced.
本発明の把手付き不織布袋において、把手は、帯状物を二重に重ね、縫着されるかまたはホットメルト接着剤により接着されてなることが好ましい。ホットメルト接着剤により接着する場合、袋本体等のヒートシール加工の際に発生する熱の活用により、ホットメルト接着剤で袋本体と把手とを結合する工程と同時に行えば、工程数をさらに減らすことができ、製造コストを低減できる。
把手は、開口部の内側、外側のどちらに取り付けてもよいが、内側の方が重ねた状態で収納や出荷しやすく、また折り畳んで携帯するときに袋の内側に入れられるので邪魔にならない。
In the non-woven bag with a handle according to the present invention, the handle is preferably a double layer of strips, sewn together or bonded by a hot melt adhesive. When bonding with a hot melt adhesive, the number of processes is further reduced if it is performed simultaneously with the process of bonding the bag body and the handle with the hot melt adhesive by utilizing heat generated during heat sealing of the bag body etc. And the manufacturing cost can be reduced.
The handle may be attached to either the inside or the outside of the opening, but it is easy to store and ship with the inside overlapped, and it is unobtrusive because it is placed inside the bag when folded and carried.
本発明の把手付き不織布袋において、ポリプロピレン不織布シートの厚みは、ホットメ
ルト接着剤の浸透固化域が、袋本体の外面もしくは、把手の外面に露出するように形成されると、外観見栄えを悪くしたり、はみ出した接着剤を取り除く等の手間が増えたりするため、３５ｇ／ｍ２乃至３５０ｇ／ｍ２、または４０ｇ／ｍ２乃至２００ｇ／ｍ２、または７０ｇ／ｍ２乃至１５５ｇ／ｍ２、または７５ｇ／ｍ２乃至１００ｇ／ｍ２が望ましい。
In the non-woven bag with a handle of the present invention, the thickness of the non-woven polypropylene sheet is deteriorated in appearance when it is formed so that the penetration and solidification area of the hot melt adhesive is exposed on the outer surface of the bag body or the outer surface of the handle. 35 g / m 2 to 350 g / m 2 , or 40 g / m 2 to 200 g / m 2 , or 70 g / m 2 to 155 g / m 2 , or to increase the time and effort required to remove the adhesive that has run out. 75 g / m 2 to 100 g / m 2 is desirable.
把手付き不織布袋は、把手と袋本体をヒートシールのみで結合している場合、重い荷物を入れると、把手の袋本体への取付部に大きな力がかかり、容易にとれてしまう虞がある。その理由として、ヒートシール結合は、不織布を溶かして圧力をかけて結合させるものであるため、把手と袋本体の不織布同士の表面だけが結合していることが挙げられる。
それに対して、本発明の把手付き不織布袋は、袋本体と把手の両者の接触域から袋本体のポリピレン不織布の内部並びに把手の内部にまで亘ってホットメルト接着剤の浸透固化域が形成されていることで、ヒートシールのみによる結合に比べてはるかに強く結合しているため、把手と袋本体がとれにくい。
When the handle and the bag body are joined only by heat sealing, when the heavy load is put on the non-woven fabric bag with handle, a large force may be applied to the attachment portion to the bag body of the handle, and it may be easily released. The reason is that since the heat seal bonding is to melt and bond the non-woven fabric under pressure, only the surfaces of the non-woven fabric of the handle and the bag body are bonded.
On the other hand, in the non-woven fabric bag with handle of the present invention, the infiltration solidified area of the hot melt adhesive is formed from the contact area of both the bag body and the handle to the inside of the polypyrene non-woven fabric of the bag body and the inside of the handle. In this case, the handle and the bag body are difficult to remove because the bond is much stronger than the heat seal only.
以下に、図面を参照して本発明をより詳細に説明する。図１は本発明の実施例１乃至実施例３の把手付き不織布袋を表す図である。しかし、本発明の把手付き不織布袋は以下に限定されるものではない。 The invention will now be described in more detail with reference to the drawings. FIG. 1 is a view showing a non-woven bag with a handle according to Examples 1 to 3 of the present invention. However, the non-woven bag with a handle of the present invention is not limited to the following.
実施例１：
実施例１の把手付き不織布袋１は、ポリプロピレン不織布からなる袋本体２と、ポリプロピレン不織布からなる把手３とを備えてなる（図１参照）。
７６ｃｍ×１１２ｃｍの矩形の不織布シートを、短辺同士が重なるように二つ折に畳み、その折り目部をふくむシート７．５ｃｍを内側に谷折にして、袋側縁部をインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合し、これにより袋の開口部を形成した。
把手３は、幅５ｃｍ、長さ４５ｃｍの不織布シートを長辺同士が重なるように二つ折りに畳み、長手方向の両縁部６を縫着し、幅２．５ｃｍ、長さ４５ｃｍの帯を製造した。
袋本体２は、周囲７６ｃｍ、高さ４５ｃｍの開口部を有する袋状物であり、開口周縁部４のシートを内側に３．５ｃｍ折り曲げて、開口周縁部４からインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合して二層重ね構造５を形成した。
二層重ね構造５に２ｃｍ四方にホットメルト接着剤１１（軟化点が１２０℃、粘度２００００ｍＰａ・Ｓ（１８０℃）のＥＶＡ系接着剤）を塗布し、把手３の取付部７にてインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により把手３を二層重ね構造５に接着し、ホットメルト接着剤の浸透固化域１２の形成により把手３と袋本体２を結合した。
Example 1:
The handleable nonwoven fabric bag 1 of Example 1 includes a bag body 2 made of polypropylene nonwoven fabric and a handle 3 made of polypropylene nonwoven fabric (see FIG. 1).
A 76 cm x 112 cm rectangular nonwoven fabric sheet is folded in two so that the short sides overlap each other, and the sheet 7.5 cm including the crease is made into a valley fold inside, and the bag side edge is impulse heat seal (basic Conditions: Heaters (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal time) 4 seconds, voltage 220 V, instantaneous current 45 A), thereby forming an opening of the bag.
Handle 3 folds a 5 cm wide and 45 cm long non-woven sheet into two folds so that the long sides overlap each other, sews on both edges 6 in the longitudinal direction to produce a 2.5 cm wide and 45 cm long band did.
The bag body 2 is a bag having an opening with a circumference of 76 cm and a height of 45 cm, and the sheet of the opening peripheral portion 4 is bent 3.5 cm inward, and impulse heat sealing is performed from the opening peripheral portion 4 (basic conditions: The two-layered structure 5 was formed by combining with a heater (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, and instantaneous current 45 A.
Apply a hot melt adhesive 11 (EVA adhesive with a softening point of 120 ° C. and a viscosity of 20000 mPa · S (180 ° C.) to 2 cm × 2 cm on a two-layer laminated structure 5 and apply impulse heat at the attachment 7 of the handle 3 The handle 3 is bonded to the two-layered structure 5 by sealing (basic conditions: heater (pair of cylindrical shapes: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, instantaneous current 45 A) The handle 3 and the bag body 2 were joined by the formation of the infiltration solidified area 12 of the melt adhesive.
実施例２：
実施例２の把手付き不織布袋１は、ポリプロピレン不織布からなる袋本体２と、ポリプロピレン不織布からなる把手３とを備えてなる（図１参照）。
７６ｃｍ×１１２ｃｍの矩形の不織布シートを、短辺同士が重なるように二つ折に畳み、その折り目部をふくむシート７．５ｃｍを内側に谷折にして、袋側縁部をインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合し、これにより袋の開口部を形成した。
把手３は、幅５ｃｍ、長さ４５ｃｍの不織布シートを長辺同士が重なるように二つ折り
に畳み、長手方向の両縁部６を縫着し、幅２．５ｃｍ、長さ４５ｃｍの帯を製造した。
袋本体２は、周囲７６ｃｍ、高さ４５ｃｍの開口部を有する袋状物であり、開口周縁部４のシートを内側に３．５ｃｍ折り曲げて、開口周縁部４からインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合して二層重ね構造５を形成した。
二層重ね構造５に２ｃｍ四方にホットメルト接着剤１１（軟化点が１００℃、粘度１００００ｍＰａ・Ｓ（１８０℃）のＥＶＡ系接着剤）を塗布し、把手３の取付部７にてインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により把手３を二層重ね構造５に接着し、ホットメルト接着剤の浸透固化域１２の形成により把手３と袋本体２を結合した。
Example 2:
The handleable non-woven fabric bag 1 of Example 2 includes a bag main body 2 made of a polypropylene non-woven fabric and a handle 3 made of a polypropylene non-woven fabric (see FIG. 1).
A 76 cm x 112 cm rectangular nonwoven fabric sheet is folded in two so that the short sides overlap each other, and the sheet 7.5 cm including the crease is made into a valley fold inside, and the bag side edge is impulse heat seal (basic Conditions: Heaters (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal time) 4 seconds, voltage 220 V, instantaneous current 45 A), thereby forming an opening of the bag.
Handle 3 folds a 5 cm wide and 45 cm long non-woven sheet into two folds so that the long sides overlap each other, sews on both edges 6 in the longitudinal direction to produce a 2.5 cm wide and 45 cm long band did.
The bag body 2 is a bag having an opening with a circumference of 76 cm and a height of 45 cm, and the sheet of the opening peripheral portion 4 is bent 3.5 cm inward, and impulse heat sealing is performed from the opening peripheral portion 4 (basic conditions: The two-layered structure 5 was formed by combining with a heater (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, and instantaneous current 45 A.
Apply a hot melt adhesive 11 (EVA adhesive with a softening point of 100 ° C and a viscosity of 10000 mPa · S (180 ° C)) to 2 cm × 2 cm on a two-layer laminated structure 5 and apply impulse heat at the attachment 7 of the handle 3 The handle 3 is bonded to the two-layered structure 5 by sealing (basic conditions: heater (pair of cylindrical shapes: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, instantaneous current 45 A) The handle 3 and the bag body 2 were joined by the formation of the infiltration solidified area 12 of the melt adhesive.
実施例３：
実施例３の把手付き不織布袋１は、ポリプロピレン不織布からなる袋本体２と、ポリプロピレン不織布からなる把手３とを備えてなる（図１参照）。
７６ｃｍ×１１２ｃｍの矩形の不織布シートを、短辺同士が重なるように二つ折に畳み、その折り目部をふくむシート７．５ｃｍを内側に谷折にして、袋側縁部をインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合し、これにより袋の開口部を形成した。
把手３は、幅５ｃｍ、長さ４５ｃｍの不織布シートを長辺同士が重なるように二つ折りに畳み、長手方向の両縁部６を縫着し、幅２．５ｃｍ、長さ４５ｃｍの帯を製造した。
袋本体２は、周囲７６ｃｍ、高さ４５ｃｍの開口部を有する袋状物であり、開口周縁部４のシートを内側に３．５ｃｍ折り曲げて、開口周縁部４からインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合して二層重ね構造５を形成した。
二層重ね構造５に２ｃｍ四方にホットメルト接着剤１１（軟化点が８０℃、粘度１０００ｍＰａ・Ｓ（１８０℃）のＥＶＡ系接着剤）を塗布し、把手３の取付部７にてインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により把手３を二層重ね構造５に接着し、ホットメルト接着剤の浸透固化域１２の形成により把手３と袋本体２を結合した。
Example 3:
The handleable nonwoven fabric bag 1 of Example 3 includes a bag body 2 made of a polypropylene nonwoven fabric and a handle 3 made of a polypropylene nonwoven fabric (see FIG. 1).
A 76 cm x 112 cm rectangular nonwoven fabric sheet is folded in two so that the short sides overlap each other, and the sheet 7.5 cm including the crease is made into a valley fold inside, and the bag side edge is impulse heat seal (basic Conditions: Heaters (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal time) 4 seconds, voltage 220 V, instantaneous current 45 A), thereby forming an opening of the bag.
Handle 3 folds a 5 cm wide and 45 cm long non-woven sheet into two folds so that the long sides overlap each other, sews on both edges 6 in the longitudinal direction to produce a 2.5 cm wide and 45 cm long band did.
The bag body 2 is a bag having an opening with a circumference of 76 cm and a height of 45 cm, and the sheet of the opening peripheral portion 4 is bent 3.5 cm inward, and impulse heat sealing is performed from the opening peripheral portion 4 (basic conditions: The two-layered structure 5 was formed by combining with a heater (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, and instantaneous current 45 A.
Apply a hot melt adhesive 11 (EVA adhesive with a softening point of 80 ° C. and a viscosity of 1000 mPa · S (180 ° C.) to 2 cm × 2 cm on a two-layer laminated structure 5 and apply impulse heat at the attachment 7 of the handle 3 The handle 3 is bonded to the two-layered structure 5 by sealing (basic conditions: heater (pair of cylindrical shapes: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, instantaneous current 45 A) The handle 3 and the bag body 2 were joined by the formation of the infiltration solidified area 12 of the melt adhesive.
図２には、実施例１乃至実施例３で製造した袋本体２の二層重ね構造５と把手３の取付部７においてホットメルト接着剤が浸透固化域を形成する工程を示す断面図を示した。ホットメルト接着剤１１が、袋本体２の二層重ね構造５と把手３の取付部７、これら両者の接触域１０から袋本体のポリピレン不織布の内部並びに把手の内部にまで亘って、浸透し、固化域を形成することで袋本体２の二層重ね構造５と把手３が十分な強度を持って結合する。 FIG. 2 shows a cross-sectional view showing a step of forming a penetration and solidification area by the hot melt adhesive in the double-layered structure 5 of the bag main body 2 manufactured in Examples 1 to 3 and the attaching portion 7 of the handle 3. The The hot melt adhesive 11 penetrates from the double layered structure 5 of the bag body 2 and the attachment portion 7 of the handle 3 to the contact area 10 of the both, the inside of the polypyrene nonwoven fabric of the bag body and the inside of the handle, By forming the solidified region, the double-layered structure 5 of the bag body 2 and the handle 3 are bonded with sufficient strength.
比較例１：
比較例１の把手付き不織布袋１は、ポリプロピレン不織布からなる袋本体２と、ポリプロピレン不織布からなる把手３とを備えてなる（図３参照）。
７６ｃｍ×１１２ｃｍの矩形の不織布シートを、短辺同士が重なるように二つ折に畳み、その折り目部をふくむシート７．５ｃｍを内側に谷折にして、袋側縁部をインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合し、これにより袋の開口部を形成した。
把手３は、幅５ｃｍ、長さ４５ｃｍの不織布シートを長辺同士が重なるように二つ折りに畳み、長手方向の両縁部６を縫着し、幅２．５ｃｍ、長さ４５ｃｍの帯を製造した。
袋本体２は、周囲７６ｃｍ、高さ４５ｃｍの開口部を有する袋状物であり、開口周縁部４のシートを内側に３．５ｃｍ折り曲げて、開口周縁部４からインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合して二層重ね構造５を形成した。
二層重ね構造５のうち把手３の取付部８にてインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により把手３と袋本体２を結合した。
Comparative Example 1:
The handleable non-woven fabric bag 1 of Comparative Example 1 includes a bag main body 2 made of a polypropylene non-woven fabric and a handle 3 made of a polypropylene non-woven fabric (see FIG. 3).
A 76 cm x 112 cm rectangular nonwoven fabric sheet is folded in two so that the short sides overlap each other, and the sheet 7.5 cm including the crease is made into a valley fold inside, and the bag side edge is impulse heat seal (basic Conditions: Heaters (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal time) 4 seconds, voltage 220 V, instantaneous current 45 A), thereby forming an opening of the bag.
Handle 3 folds a 5 cm wide and 45 cm long non-woven sheet into two folds so that the long sides overlap each other, sews on both edges 6 in the longitudinal direction to produce a 2.5 cm wide and 45 cm long band did.
The bag body 2 is a bag having an opening with a circumference of 76 cm and a height of 45 cm, and the sheet of the opening peripheral portion 4 is bent 3.5 cm inward, and impulse heat sealing is performed from the opening peripheral portion 4 (basic conditions: The two-layered structure 5 was formed by combining with a heater (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, and instantaneous current 45 A.
Impulse heat seal (at basic condition: heater (pair of cylindrical shape: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, at the attachment portion 8 of the handle 3 in the two-layered structure 5) The handle 3 and the bag body 2 were connected by the instantaneous current 45A).
比較例２：
比較例２の把手付き不織布袋１は、ポリプロピレン不織布からなる袋本体２と、ポリプロピレン不織布からなる把手３とを備えてなる（図４参照）。
７６ｃｍ×１１２ｃｍの矩形の不織布シートを、短辺同士が重なるように二つ折に畳み、その折り目部をふくむシート７．５ｃｍを内側に谷折にして、袋側縁部をインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合し、これにより袋の開口部を形成した。
把手３は、幅５ｃｍ、長さ４５ｃｍの不織布シートを長辺同士が重なるように二つ折りに畳み、長手方向の両縁部６を縫着し、幅２．５ｃｍ、長さ４５ｃｍの帯を製造した。
袋本体２は、周囲７６ｃｍ、高さ４５ｃｍの開口部を有する袋状物であり、開口周縁部４のシートを内側に３．５ｃｍ折り曲げて、開口周縁部４からインパルス式ヒートシール（基本条件：ヒーター（一対の円柱状：各円柱の直径０．９ｍｍ）、加熱（シール）時間４秒、電圧２２０Ｖ、瞬間電流４５Ａ）により結合して二層重ね構造５を形成した。
二層重ね構造５のうち把手３の取付部９にて２ｃｍ四方の対角線を有する略正方形状の縫い目が形成させるように把手３と袋本体２を結合した。
Comparative example 2:
The nonwoven fabric bag 1 with a handle of Comparative Example 2 includes a bag body 2 made of a polypropylene nonwoven fabric and a handle 3 made of a polypropylene nonwoven fabric (see FIG. 4).
A 76 cm x 112 cm rectangular nonwoven fabric sheet is folded in two so that the short sides overlap each other, and the sheet 7.5 cm including the crease is made into a valley fold inside, and the bag side edge is impulse heat seal (basic Conditions: Heaters (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal time) 4 seconds, voltage 220 V, instantaneous current 45 A), thereby forming an opening of the bag.
Handle 3 folds a 5 cm wide and 45 cm long non-woven sheet into two folds so that the long sides overlap each other, sews on both edges 6 in the longitudinal direction to produce a 2.5 cm wide and 45 cm long band did.
The bag body 2 is a bag having an opening with a circumference of 76 cm and a height of 45 cm, and the sheet of the opening peripheral portion 4 is bent 3.5 cm inward, and impulse heat sealing is performed from the opening peripheral portion 4 (basic conditions: The two-layered structure 5 was formed by combining with a heater (a pair of cylinders: diameter of each cylinder 0.9 mm), heating (seal) time 4 seconds, voltage 220 V, and instantaneous current 45 A.
The handle 3 and the bag main body 2 were joined so that a substantially square-shaped seam having a diagonal of 2 cm square was formed at the attachment portion 9 of the handle 3 in the two-layered structure 5.
引っ張り試験
実施例１乃至実施例３並びに比較例１及び比較例２の把手付き不織布袋を試験板に水平に敷いて把手以外を固定し、二つの把手のうち下側にある把手を試験板に対して９０°の角度で把手が剥がれ始めるまで引き剥がした。剥がれ始めたか否かに関しては目視にて確認した。
その結果、把手と袋本体をホットメルト接着剤を用いて接着した実施例１の把手付き不織布袋は、把手と袋本体を縫着している比較例２の把手付き不織布袋において引き剥がすのに要した力と同程度のもしくはそれ以上の力を加えて、初めて引き剥がすことができた。実施例２の把手付き不織布袋及び実施例３の把手付き不織布袋においても、比較例２の把手付き不織布袋において引き剥がすのに要した力と同程度の力を加えて、初めて引き剥がすことができたが、実施例１の把手付き不織布袋が、把手と袋が最も剥がれにくく、引き剥がすのに、実施例２の把手付き不織布袋の約１．１倍、実施例３の把手付き不織布袋の約１．２倍の力を要した。
一方で、ヒートシールのみで結合している比較例１の把手付き不織布袋は、実施例１の把手付き不織布袋に比べて１０分の１程度の力で把手と袋が剥がれてしまった。
Tension Test The nonwoven fabric bags with grips of Examples 1 to 3 and Comparative Examples 1 and 2 are horizontally laid on a test plate to fix other than the grips, and the lower handle of the two grips is used as a test plate. It was peeled off at an angle of 90 ° until the handle began to peel off. It was visually confirmed whether it had begun to peel off.
As a result, the non-woven fabric bag with handle of Example 1 in which the handle and the bag body are bonded using a hot melt adhesive is to be peeled off in the non-woven bag with handle of Comparative Example 2 in which the handle and bag body are sewn. It was only possible to peel off by applying a force equal to or greater than the required force. Also in the non-woven bag with a handle of Example 2 and the non-woven bag with a handle of Example 3, it is possible to apply the same force as that required for the non-woven bag with a handle of Comparative Example 2 to peel off for the first time. Although the nonwoven fabric bag with a handle of Example 1 was able to peel off, the handle and the bag were the hardest to peel off, the nonwoven fabric bag with a handle of Example 3 was about 1.1 times the nonwoven fabric bag with a handle of Example 2. It took about 1.2 times the power of
On the other hand, in the non-woven bag with a handle of Comparative Example 1 bonded only by heat sealing, the handle and the bag were peeled off with a force of about 1/10 compared to the non-woven bag with a handle of Example 1.
１ 不織布袋
２ 袋本体
３ 把手（帯状物）
４ 開口周縁部
５ 二層重ね構造
６ 把手の長手方向の両縁部（縫着）
７ 取付部（ホットメルト接着剤による接着箇所）
８ 取付部（ヒートシールのみによる接着箇所）
９ 取付部（縫着箇所）
１０ 袋本体と把手の接触域
１１ ホットメルト接着剤
１２ ホットメルト接着剤の浸透固化域
1 Non-woven bag 2 Bag body 3 Handle (strip)
4 opening peripheral part 5 two-layer overlapping structure 6 both edges in the longitudinal direction of the handle (sewing)
7 Mounting part (adhesion point with hot melt adhesive)
8 Mounting part (adhesion point by heat seal only)
9 Mounting part (sewing point)
10 bag body and handle contact area 11 hot melt adhesive 12 penetration solidifying area of hot melt adhesive
Claims (5)
該袋本体と該把手の取付部は、これら両者の接触域から袋本体のポリピレン不織布の内部並びに把手の内部にまで亘って、８０℃乃至１５５℃の軟化点及び１０００ｍＰａ・Ｓ（１８０℃）乃至２００００ｍＰａ・Ｓ（１８０℃）の粘度を有するホットメルト接着剤の浸透固化域を形成してなることを特徴とする把手付き不織布袋。 A non-woven fabric bag having a handle made of polypropylene non-woven fabric attached to an opening peripheral portion of a bag main body made of polypropylene non-woven fabric,
The bag body and the attachment portion of the handle extend from 80 ° C. to 155 ° C. and 1000 mPa · s (180 ° C.) from the contact area of the two to the inside of the polypyrene nonwoven of the bag body and the inside of the handle. What is claimed is: 1. A non-woven bag with a handle characterized in that a permeation solidified area of a hot melt adhesive having a viscosity of 20000 mPa · s (180 ° C.) is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017213962A JP2019083999A (en) | 2017-11-06 | 2017-11-06 | Nonwoven fabric bag with handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017213962A JP2019083999A (en) | 2017-11-06 | 2017-11-06 | Nonwoven fabric bag with handle |
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| Publication Number | Publication Date |
|---|---|
| JP2019083999A true JP2019083999A (en) | 2019-06-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017213962A Pending JP2019083999A (en) | 2017-11-06 | 2017-11-06 | Nonwoven fabric bag with handle |
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| Country | Link |
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| JP (1) | JP2019083999A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021080588A (en) * | 2019-11-15 | 2021-05-27 | 株式会社ファーストリテイリング | Trousers |
| US20210300629A1 (en) * | 2020-03-30 | 2021-09-30 | New York Packaging II, LLC | Reusable self-opening t-shirt bag apparatus and methods of manufacture thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067526U (en) * | 1992-02-05 | 1994-02-01 | リュウグウ株式会社 | Carrying bag |
| JPH07314613A (en) * | 1994-05-30 | 1995-12-05 | Nippon Shokubai Co Ltd | Water absorbable sheet, production thereof and freshness keeping method using the water absorbable sheet |
| JP2006342329A (en) * | 2005-05-09 | 2006-12-21 | Sanyo Chem Ind Ltd | Hot-melt adhesive for slightly adhesive substrate |
| JP3190018U (en) * | 2014-01-29 | 2014-04-10 | 株式会社アクシス | Square bottom bag with handle |
-
2017
- 2017-11-06 JP JP2017213962A patent/JP2019083999A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067526U (en) * | 1992-02-05 | 1994-02-01 | リュウグウ株式会社 | Carrying bag |
| JPH07314613A (en) * | 1994-05-30 | 1995-12-05 | Nippon Shokubai Co Ltd | Water absorbable sheet, production thereof and freshness keeping method using the water absorbable sheet |
| JP2006342329A (en) * | 2005-05-09 | 2006-12-21 | Sanyo Chem Ind Ltd | Hot-melt adhesive for slightly adhesive substrate |
| JP3190018U (en) * | 2014-01-29 | 2014-04-10 | 株式会社アクシス | Square bottom bag with handle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021080588A (en) * | 2019-11-15 | 2021-05-27 | 株式会社ファーストリテイリング | Trousers |
| US20210300629A1 (en) * | 2020-03-30 | 2021-09-30 | New York Packaging II, LLC | Reusable self-opening t-shirt bag apparatus and methods of manufacture thereof |
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