JP2004236960A

JP2004236960A - Female material for hook-and-loop fastener

Info

Publication number: JP2004236960A
Application number: JP2003031161A
Authority: JP
Inventors: Koji Shimizu; 孝二清水
Original assignee: 3M Innovative Properties Co
Current assignee: 3M Innovative Properties Co
Priority date: 2003-02-07
Filing date: 2003-02-07
Publication date: 2004-08-26
Anticipated expiration: 2023-02-07
Also published as: JP4480333B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a female material for a mechanical hook-and-loop fastener by which fixing connection is reliably performed in surface engagement regardless of an engagement direction and any operation without damaging an attachment/detachment operation, and also durability is raised. <P>SOLUTION: The female material piece of the hook-and-loop fastener is constituted of a hook-and-loop type structure, wherein warp knitted fabric forming loops to receive hooks is connected onto a base material surface via an adhesive. The hook-and-loop female material piece is constituted of the warp knitted fabric, which is knitted respectively with a base knitting texture made by thread reeled through a front reel, a swing knitting texture to be engaged with the base knitting texture by thread reeled through a middle reel, a loop pile forming knitting texture to be engaged with the base knitting texture or the shake knitting texture by a thread reeled through a rear reel, and a knitting texture to be formed by allowing the directions of the adjacent loop piles to be alternately different to the right and left. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、フック・アンド・ループタイプの面ファスナ雌材片に関する。
【０００２】
【従来の技術】
オープンタイプの紙おむつを被着用者に着せて着用者に係止めるテープ・ファスナには、従来粘着剤を用いるテープ・ファスナが用いられてきた。粘着剤を用いるテープ・ファスナは、粘着剤が着用者に付着したり、また取扱者の手の汚れが粘着面に移ることで接着力が低下する欠点がある。このために、雄材と雌材との係合による脱着が自在な、メカニカルタイプのファスナに切り替えられる趨勢にある。
【０００３】
メカニカルファスナに用いられている雌材には、ループパイルを有する織物、編物や不織布が特許文献１（実開昭６２−７０８１０号公報）、特許文献２（特開平７−３１３２１号公報）等多数の特許文献で知られている。
【０００４】
前記特許文献１（実開昭６２−７０８１０）ではループパイルの抜けやズレを防止し、伸縮性の少ない安定した編み組織が開示されており、特許文献３（特開平１−５００６２）ではおむつに面ファスナ雌材を取り付ける際に塗布する接着剤の透過を防ぐため、また特許文献４（特開平１０−１２７３１１）では使用時の織布の収縮を防ぐために、非ファスナ面に合成樹脂等を積層した面ファスナ雌材が開示されている。特許文献５（特表２０００−５０６４２７）、特許文献６（特表２０００−５１０３７４）には基材と織布とを接合した面ファスナ雌材が開示されており、共に基材上のデザインの視認性を向上するため織布の坪量が、また特許文献６では接合に使用する接着剤のしみだし防止のため接着剤量が規定されている。
【０００５】
一方、吸収性物品、特に紙おむつにメカニカルファスナが用いられる場合、雌材と雄材との係合特性、特に雌材の性能に配慮するする必要がある。これは、通常の紙おむつはその着用者の背側に左右一対の雄材を両側部に、左右一対の雌材を前身ごろ腹部にそれぞれ固定配置して取り付ける関係で、両端部の雄材それぞれと、雌材がそれぞれの面を併せて閉じたときの係合力の差、すなわち左方向に剥離する力と右方向に剥離されるときの力に差が大きい場合、着用者がファスナよる着用物の確実な固定機能に不安を感ずることになる。
【０００６】
【特許文献１】
実開昭６２−７０８１０号公報
【特許文献２】
特開平７−３１３２１号公報
【特許文献３】
特開平１−５００６２号公報
【特許文献４】
特開平１０−１２７３１１
【特許文献５】
特表２０００−５０６４２７号公報
【特許文献６】
特表２０００−５１０３７４
【０００７】
【発明の解決しようとする課題】
本発明は、脱着の方向、操作の如何を問わず係合面における固定が確実に得られ、その脱着操作性を損なうことなしに得られる耐久性に優れたメカニカル面ファスナの雌材の提供を目的とする。
【０００８】
本発明は、更に、軽量で嵩低く、又雄材との係合面の位置指標、キャラクターデザイン等を印刷することができる基材で裏打ちされた面ファスナ雌材の提供を目的とする。
【０００９】
本発明の他の具体的な目的の一つは、紙おむつ等の吸収物品に好適なメカニカル面ファスナ雌材を提供することにある。
【００１０】
【課題を解決するための手段】
本発明は、フックを受け入れるループを形成した経編地を介して基材面に接合した構造のフック・アンド・ループタイプの面ファスナ雌材において、経編地が後筬に筬通しした糸で振り組織、中筬に筬通しした糸で振り組織と係合しかつ編み方向に隣接するループパイルの向きが左右互い違いで形成されるループパイル編み組織、及び前筬に筬通しした糸で振り組織乃至ループパイル形成組織と係合する地組織でそれぞれ編まれている経編地で構成されることを特徴とするフック・アンド・ループタイプの面ファスナ雌材片である。
【００１１】
以下に、本発明を具体的に詳述する。
【００１２】
本発明のフック・アンド・ループタイプの面ファスナ雌材片（１）は、図１に模式的に示されるように、面ファスナ雄材片（２）のフック（２ａ）を受け入れるループ（１ａ）を表面に有する経編地片（１ｂ）が基材（２ｃ）で裏打ちされた積層構造体である。ここで基材（１ｃ）は、例えば、ポリプロピレン、ポリエチレン、ポリスチレン、ポリエチレンテレフタレートなどのポリエステル樹脂、ポリアミド樹脂、ポリウレタン樹脂などの合成樹脂フィルム、もしくはこれらの樹脂フィルムの積層フィルム、不織布、紙等が挙げられる。基材面には要すれば雄材との係合面の位置指標、キャラクターデザイン等が印刷されることがある。
【００１３】
フックを受け入れるループを表面に形成した本発明における経編地片（２ｂ）は、地編組織、連結編組織及びループ編組織が３枚筬使いでトリコット機，ラッセル機を用いて編まれるフィラメント糸による経編地である。
【００１４】
フィラメント糸の素材としては、ポリプロピレン、ポリエステル、ポリアミド繊維または天然繊維等が挙げられる。フィラメント糸の繊度は、２０〜２２０ｄｔｅｘが使用されるが、糸の繊度を特に限定するものではない。なお、経編地は、要すれば、全体又は部分的に染められていてもよい。
【００１５】
地組織はフィラメント糸がハーフセットで筬通しされた前筬を１−０／０−１のラッピングで、鎖編みされることで編まれている。連結組織は、フィラメント糸の振り糸をハーフセットで筬通しした後筬を０−０／３−３のラッピングで編まれている。かくして、編地強度と形態保持性を兼ね備えた地組織が形成される。振り糸が前記したラッピングで編成されていることで、編地の薄地化に加えて地組織面に対するループの浮き高さを大きくすることができる利点がえられる。
【００１６】
フックを受け入れるループは、ループ編組織が糸をハーフセットで中筬に筬通して、１−０／２−１／２−３／１−２のラッピングで編まれることで形成される。かくして、各ウエールの方向に沿ってループが左右均等に編地面に配列して浮いて形成される編組織により形成される。前記したラッピングでループ編組織が編成されるので、地組織を編む経糸に絡まるループ形成糸のニードルループが閉じ目で編まれ、編地の編成が円滑に行われるので、きさの揃った安定した形状で編地の片面に浮きループが集中して形成された編地が得られる。
【００１７】
なお、経編地の編成にあたっては、ループ形成糸の編成の後に、鎖編みを編むことで形成されるループの脚部が締められ、ループパイルのサイズ、向きを安定させることができる。
【００１８】
織布と基材との接着に際しては、ドライラミネート、押し出しラミネート、ウェットラミネート、熱ラミネート、超音波等従来公知の方法を使用できる。ドライラミネート用接着剤にはウレタン系、ＥＶＡ系、アクリル系、酢酸ビニル系等、ウェットラミネート用接着剤には澱粉、カゼイン、酢酸ビニル、ポリアクリル酸エステル等の接着剤を使用でき、また押し出しラミネートにはポリエチレン、ポリプロピレン、あるいは変性ポリオレフィン等の樹脂を適宜使用することができる。ただしこれら接着剤、樹脂に限定されるものではない。
【００１９】
本発明の面ファスナ雌材を紙おむつのファスニング部材として使用する場合の紙おむつへの固定手段としては、例えばグルー、熱融着、超音波加工等による接着、一体成形、縫製、ステープラーによる機械的固定などを上げることができる。グルーによる固定においてはＳＩＳ，ＳＢＳ等のゴム系、アクリル系、シリコン系、ＥＶＡ系等の公知の粘着剤が必要に応じて適宜選択されるが、これらの樹脂に限定されるものではない。
【００２０】
本発明の好ましい実施の形態において、該経編地は１平方メートル当たり１０〜１００ｇの坪量を有する。１０ｇ以下では編み立て時に編地としての形態保持が難しく、また１００ｇ以上では剛性が増すことで紙おむつに取り付けられた時にその部分の柔軟性が損なわれる他、編地が密となることで基材上にデザインを施す場合その視認性が損なわれる。
【００２１】
【実施例】
以下に実施例を挙げて、本発明の面ファスナをより具体的に説明する。
【００２２】
（実施例）
図２に示す編組織を有するフックを受け入れるループを表面に形成した経編地を３枚筬を備えたトリコット機を用いて下記の条件で編成した。編み順は，振り糸，ループ糸，ステッチ糸の順に編成した。
【００２３】

編成後、得られた生機編地を厚さ１２μｍの２軸延伸ポリプロピレンフィルムにポリウレタン接着剤を用いて接着して、雌材地を調製した。この雌材片の係合力試験法による係合力（Ｎ／ｍ）は、右から左方向への係合（剥離）力１３３Ｎ、左から右方向の係合（剥離）力で１１３Ｎでその差は２０Ｎで左右方向の係合力の違いは概ねないものと判定された。
【００２４】
得られたテープ状の雌材片を使い捨ておむつの前身ごろ腹部腰周りにベルト上に固定し，同じく腰側部に雄材テープを固定して、係合状態を官能テストにより評価した結果、おむつ装着中にメカニカル面テープが左右いずれの方向からも、違和感なく、しっかりと係合することができ、剥離時に左右方向での剥離力の差のあることが感じられないものであった。
【００２５】
【発明の効果】
本発明は、係合の方向、操作の如何を問わず面係合における確実な固定的接合と、その脱着操作を損なうことなし実現することができ、加えて耐久性に優れたメカニカル面ファスナの雌材である。
【００２６】
本発明の面ファスナ雌材は、紙おむつ等の吸収物品に好適なメカニカル面ファスナ雌材である。
【図面の簡単な説明】
【図１】本発明のフック・アンド・ループタイプの面ファスナ雌材の断面構造の模式図。
【図２】本発明の面ファスナ雌材の形成する経編地の編組織を示すラッピング図。
【符号の説明】
１…面ファスナ雌材片
１ａ…ループ
１ｂ…経編地片
１ｃ…基材
２…面ファスナ雄材片
２ａ…フック[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hook-and-loop type hook-and-loop fastener female material piece.
[0002]
[Prior art]
Conventionally, a tape fastener using an adhesive has been used as a tape fastener for attaching an open-type disposable diaper to a wearer and locking the wearer. Tape fasteners using an adhesive have the disadvantage that the adhesive is attached to the wearer, and the dirt on the hands of the handler is transferred to the adhesive surface, resulting in a decrease in adhesive strength. For this reason, there is a trend to switch to a mechanical type fastener which can be freely attached and detached by engagement between a male material and a female material.
[0003]
As the female material used for the mechanical fastener, a woven fabric, a knitted fabric, and a nonwoven fabric having a loop pile include Patent Document 1 (Japanese Utility Model Application Laid-Open No. 62-70810) and Patent Document 2 (Japanese Patent Application Laid-Open No. 7-31321). Is known in US Pat.
[0004]
Patent Document 1 (Japanese Utility Model Application Laid-Open No. 62-70810) discloses a stable knitting structure that prevents the loop pile from coming off or slipping and has a small stretchability. Patent Document 3 (Japanese Patent Application Laid-Open No. 1-50062) discloses a diaper. In order to prevent the transmission of the adhesive applied when attaching the female material of the hook-and-loop fastener, and to prevent the shrinkage of the woven fabric during use in Patent Document 4 (Japanese Patent Laid-Open No. Hei 10-1273111), a synthetic resin or the like is laminated on the non-fastener surface. A hook and loop fastener female material is disclosed. Patent Literature 5 (Japanese Patent Application Laid-Open No. 2000-506427) and Patent Document 6 (Japanese Patent Application Laid-Open No. 2000-510374) disclose a surface fastener female material in which a base material and a woven fabric are joined. The basis weight of the woven fabric is specified in order to improve the property, and the amount of the adhesive is specified in Patent Document 6 in order to prevent the exudation of the adhesive used for bonding.
[0005]
On the other hand, when a mechanical fastener is used for an absorbent article, especially for a disposable diaper, it is necessary to consider the engagement characteristics between the female and male materials, particularly the performance of the female material. This is because a normal disposable diaper has a pair of left and right male members fixed to both sides on the back side of the wearer and a pair of left and right female members fixed to the front abdomen. If the difference between the engaging force when the materials are closed together, that is, the difference between the left peeling force and the right peeling force is large, the wearer can securely wear the fastener by the fastener. You will feel anxious about the fixed function.
[0006]
[Patent Document 1]
Japanese Utility Model Publication No. Sho 62-70810 [Patent Document 2]
JP-A-7-31321 [Patent Document 3]
Japanese Patent Application Laid-Open No. 1-50062 [Patent Document 4]
JP-A-10-127311
[Patent Document 5]
JP 2000-506427 A [Patent Document 6]
Special table 2000-510374
[0007]
[Problems to be solved by the invention]
An object of the present invention is to provide a female member of a mechanical surface fastener excellent in durability that can be reliably fixed on an engagement surface regardless of the direction of attachment and detachment, regardless of operation, and is obtained without impairing the attachment / detachment operability. Aim.
[0008]
A further object of the present invention is to provide a female fastener material which is lightweight and low in bulk, and which is backed with a base material capable of printing a position index of an engagement surface with a male material, a character design and the like.
[0009]
Another specific object of the present invention is to provide a mechanical surface fastener female material suitable for an absorbent article such as a disposable diaper.
[0010]
[Means for Solving the Problems]
The present invention relates to a hook-and-loop type surface fastener female material having a structure in which a warp knitted fabric is joined to a base material surface through a warp knitted fabric having a loop for receiving a hook. A swing structure, a loop pile knitting structure in which the direction of the loop pile adjacent to the knitting direction is alternately formed in the left and right sides, and a swing structure with a thread reed through the front reed. A hook-and-loop type hook-and-loop type hook-and-loop fastener female material piece which is constituted by warp knitted fabrics each knitted with a ground structure engaged with a loop pile forming structure.
[0011]
Hereinafter, the present invention will be described in detail.
[0012]
As shown schematically in FIG. 1, the hook and loop type hook-and-loop type female fastener piece (1) of the present invention includes a loop (1a) for receiving the hook (2a) of the male hook-and-loop fastener piece (2). This is a laminated structure in which a warp-knitted fabric piece (1b) on the surface is lined with a base material (2c). Here, the substrate (1c) is, for example, a polyester resin such as polypropylene, polyethylene, polystyrene, or polyethylene terephthalate; a synthetic resin film such as a polyamide resin or a polyurethane resin; a laminated film of these resin films; Can be If necessary, a position index of an engagement surface with the male material, a character design, and the like may be printed on the base material surface.
[0013]
The warp knitted fabric piece (2b) according to the present invention having a loop for receiving a hook formed on the surface thereof is a filament in which a ground knitting structure, a connecting knitting structure and a loop knitting structure are knitted with a reed using a tricot machine or a Russell machine. It is a warp knitted fabric with yarn.
[0014]
Examples of the material of the filament yarn include polypropylene, polyester, polyamide fiber and natural fiber. The fineness of the filament yarn is 20 to 220 dtex, but the fineness of the yarn is not particularly limited. In addition, the warp knitted fabric may be dyed wholly or partially, if necessary.
[0015]
The ground structure is knitted by chain-knitting the front reed in which the filament yarn is reeded in a half set by wrapping of 1-0 / 0-1. In the connection structure, a reed is knitted with a wrapping of 0-0 / 3-3 after a reed of a filament yarn is passed through a half set. Thus, a ground structure having both knitted fabric strength and shape retention is formed. The knitting of the yarn by the wrapping described above has an advantage that the floating height of the loop with respect to the ground structure surface can be increased in addition to the thinning of the knitted fabric.
[0016]
The loop for receiving the hook is formed by a loop knitting structure in which the yarn is reeded in a half set through a middle reed and knitted by wrapping of 1-0 / 2-1 / 2-3 / 1-2. Thus, a loop is formed along the direction of each wale by a knitting structure that is formed to float on the knitted ground evenly on the left and right sides. Since the loop knitting structure is knitted by the wrapping described above, the needle loop of the loop forming yarn entangled with the warp knitting the ground structure is knitted at the closed stitch, and the knitting of the knitted fabric is smoothly performed, so that the stability is uniform and uniform. A knitted fabric in which floating loops are formed concentrated on one side of the knitted fabric with the adjusted shape is obtained.
[0017]
In knitting the warp knitted fabric, after knitting the loop forming yarn, the legs of the loop formed by knitting the chain stitch are tightened, and the size and direction of the loop pile can be stabilized.
[0018]
In bonding the woven fabric and the substrate, conventionally known methods such as dry lamination, extrusion lamination, wet lamination, heat lamination, and ultrasonic waves can be used. Urethane, EVA, acrylic, vinyl acetate etc. can be used for dry laminating adhesive, starch, casein, vinyl acetate, polyacrylate etc. can be used for wet laminating adhesive. A resin such as polyethylene, polypropylene, or modified polyolefin can be used as appropriate. However, it is not limited to these adhesives and resins.
[0019]
When the female surface fastener of the present invention is used as a fastening member for a disposable diaper, the fixing means to the disposable diaper includes, for example, gluing, heat sealing, bonding by ultrasonic processing, integral molding, sewing, mechanical fixing by a stapler, and the like. Can be raised. In fixing with a glue, known adhesives such as rubbers such as SIS and SBS, acrylics, silicones, and EVAs are appropriately selected as necessary, but are not limited to these resins.
[0020]
In a preferred embodiment of the invention, the warp knitted fabric has a basis weight of 10 to 100 g per square meter. If it is less than 10 g, it is difficult to maintain the form as a knitted fabric at the time of knitting, and if it is more than 100 g, the rigidity is increased so that the flexibility of the portion is impaired when attached to a disposable diaper. When a design is applied on top, the visibility is impaired.
[0021]
【Example】
Hereinafter, the hook-and-loop fastener of the present invention will be described more specifically with reference to examples.
[0022]
(Example)
A warp knitted fabric having a surface for receiving a hook having a knitting structure shown in FIG. 2 formed on the surface was knitted under the following conditions using a tricot machine equipped with three reeds. The knitting order was knitting in the order of a bobbin thread, a loop thread, and a stitch thread.
[0023]

After knitting, the obtained greige fabric was adhered to a biaxially oriented polypropylene film having a thickness of 12 μm using a polyurethane adhesive to prepare a female material fabric. The engaging force (N / m) of the female material piece according to the engaging force test method is 133 N, which is an engaging (peeling) force from right to left 133 N, and an engaging (peeling) force from left to right 113 N. At 20N, it was determined that there was almost no difference in the engaging force in the left-right direction.
[0024]
The obtained tape-shaped female piece was fixed on a belt around the waist of the abdomen around the front of the disposable diaper, and the male tape was fixed on the waist side, and the engagement was evaluated by a sensory test. The mechanical surface tape could be firmly engaged without any sense of incongruity from either the left or right direction, and it was not felt that there was a difference in the peeling force between the left and right directions at the time of peeling.
[0025]
【The invention's effect】
INDUSTRIAL APPLICABILITY The present invention provides a reliable fixed joint in surface engagement regardless of the direction of engagement and operation, and can be realized without impairing the attachment / detachment operation. It is a female material.
[0026]
The female surface fastener material of the present invention is a mechanical surface fastener female material suitable for absorbent articles such as disposable diapers.
[Brief description of the drawings]
FIG. 1 is a schematic view of a cross-sectional structure of a hook and loop type hook-and-loop female fastener material according to the present invention.
FIG. 2 is a lapping diagram showing a knitting structure of a warp knitted fabric formed by the female surface fastener material of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Surface fastener female material piece 1a ... Loop 1b ... Warp knitted fabric piece 1c ... Base material 2 ... Surface fastener male material piece 2a ... Hook

Claims

In a hook-and-loop type hook-and-loop hook-and-loop female material joined to the substrate surface via a warp knitted fabric having a loop for receiving hooks, the warp knitted fabric is swung with a thread reed through a rear reed. A loop pile knitting structure in which the direction of the loop pile adjacent to the knitting direction is engaged alternately with the waving structure with the reed thread, and the waving structure or the loop pile is formed with the reed thread passing through the front reed. A hook and loop type hook-and-loop hook-and-loop female fastener piece comprising a warp knitted fabric knitted with a ground texture engaged with the tissue.

The swing structure, loop pile forming structure and ground structure of the warp knitted fabric are respectively wrapped by 0-0 / 3-3, 1-0 / 2-1 / 2-3 / 1-2 and 1-0 / 0-1. The hook-and-loop type hook-and-loop hook-and-loop fastener female material piece according to claim 1, which is knitted.

Hook and loop type of hook and loop fastener strip of claim 1 or 2, wherein the warp knitted fabric is characterized by having a basis weight of 10 to 100 g / m ^2.

The hook and loop type according to any one of claims 1 to 3, wherein the base material is any one of a synthetic resin film / sheet, paper, and nonwoven cloth, or a laminate thereof. Hook and loop female strip.

The hook-and-loop type surface fastener female material piece, wherein an adhesive layer is provided on a surface of the base material opposite to a surface joined via a warp knitted fabric. 4. The hook and loop type hook-and-loop female fastener piece according to 4.

The hook-and-loop type hook-and-loop fastener female material piece according to any one of claims 1 to 5, which is used as a fastening member for a disposable paper diaper.

A disposable disposable diaper having a hook-and-loop type surface fastener female material piece according to any one of claims 1 to 5, having a function of securely fixing an engaging surface.