JPH11350377A - Felt for papermaking and its production - Google Patents
Felt for papermaking and its productionInfo
- Publication number
- JPH11350377A JPH11350377A JP10185560A JP18556098A JPH11350377A JP H11350377 A JPH11350377 A JP H11350377A JP 10185560 A JP10185560 A JP 10185560A JP 18556098 A JP18556098 A JP 18556098A JP H11350377 A JPH11350377 A JP H11350377A
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- JP
- Japan
- Prior art keywords
- felt
- woven fabrics
- papermaking
- yarns
- woven
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に、抄紙機のプレス
部で加圧されて湿紙シートから水分を絞る働きをする抄
紙用フェルト及びその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a papermaking felt which is pressed by a press section of a papermaking machine and functions to squeeze moisture from a wet paper sheet, and a method for producing the same.
【０００２】[0002]
【従来の技術】最近の抄造技術は、高速・高ニップ圧化
が進む一方、紙肌の維持も要望されている。この要望を
満足させるには抄紙用フェルトの性能、即ち、高ニップ
下でのボイドボリュームの増加とその維持及び紙肌の向
上に寄与できるものでなければならない。2. Description of the Related Art In recent papermaking techniques, high speed and high nip pressure have been developed, while maintaining the paper surface has been demanded. In order to satisfy this demand, the felt of papermaking must be capable of contributing to the improvement of the void volume under a high nip, the maintenance of the void volume, and the improvement of the paper surface.
【０００３】前記ボイドボリューム（Ｖ．Ｖ）とは、１
ｍ2 当たりのフェルトの空隙量をいい、次式により求め
ることができる。 Ｖ．Ｖ（ｃｃ／ｍ2 ）＝Ｔ×１０００−フェルト坪量／
ρ 上式において、「Ｔ」は一定荷重下でのフェルト厚み
（ｍｍ）を、「フェルト坪量」はｇ／ｍ2 を、ρはフェ
ルト材質の密度（ｇ／ｃｍ3 ）をいう。[0003] The void volume (V.V) is 1
It refers to the amount of felt voids per m 2 and can be determined by the following equation. V. V (cc / m 2 ) = T × 1000−Felt basis weight /
ρ In the above equation, “T” indicates the felt thickness (mm) under a constant load, “felt basis weight” indicates g / m 2 , and ρ indicates the density (g / cm 3 ) of the felt material.
【０００４】前記ボイドボリュームの増加を図るための
技術として、特願昭５６−６０６８６号、特願昭５６−
１６０７６５号の如く、複数枚の織布を重ね合わせた基
布を用いた抄紙用フェルトが知られていた。Techniques for increasing the void volume are disclosed in Japanese Patent Application Nos. 56-60686 and 56-686.
A papermaking felt using a base fabric in which a plurality of woven fabrics are overlapped with each other has been known, such as Japanese Patent No. 160765.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記重
ね合わせタイプの抄紙用フェルトの基布３は、図５、図
６の如く、２枚の織布の丈方向糸（幅方向糸も同じ）が
織布２ａ、２ｂ間の接触面５で平行に揃っていたため、
重なる一方の織布２ａの丈方向糸Ｗ1 の畝状の凸部Ａ
が、他方の織布２ｂの丈方向糸Ｗ2 間の畝状の凹所Ｂに
入り込み易く、従って、次のような欠点が存在した。However, as shown in FIGS. 5 and 6, the base fabric 3 of the above-mentioned lapping type papermaking felt has two woven fabrics in which the length direction yarns (the width direction yarns are the same). Since the contact surfaces 5 between the woven fabrics 2a and 2b were aligned in parallel,
The ridge-shaped convex portion A of the lengthwise yarn W1 of one of the overlapping woven fabrics 2a
But easily enter the ridged recess B between length direction yarns W 2 of the other woven fabric 2b, therefore, the following disadvantages were present.
【０００６】即ち、抄紙用フェルトとしては、加圧下
で使用されるときに潰れ易く、ボイドボリュームが減少
し、搾水機能の早期低下を来す。織布を重ねることに
より、下層の織布の糸間に入り込む上層の織布の糸の本
数がまだらになり、干渉模様（斑模様）が発生し、フェ
ルトの表面平滑性を損なうとともに、紙に干渉マーク
（斑マーク）を生じ、均一性を低下させていた。That is, the felt for papermaking is easily crushed when used under pressure, the void volume is reduced, and the water-squeezing function is reduced at an early stage. By overlapping the woven fabric, the number of yarns of the upper woven fabric that enters between the yarns of the lower woven fabric becomes mottled, causing interference patterns (mottling), impairing the surface smoothness of the felt, An interference mark (spot mark) was generated, and the uniformity was reduced.
【０００７】本発明は、上記問題点を解決することを課
題とするものであり、ボイドボリュームの増加とその維
持及び紙肌の向上に寄与できる抄紙用フェルト及びその
製造方法を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and an object of the present invention is to provide a papermaking felt capable of contributing to increase and maintenance of void volume and improvement of paper surface, and a method of manufacturing the same. And
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る抄紙用フェルトは、複数枚の織布を積
層した基布の片面又は両面に繊維ウエブをニードリング
してなる抄紙用フェルトにおいて、前記基布を構成する
織布を、その丈方向糸が織布間の接触面で相対的に斜交
するように重ねたことを特徴とし、重なる一方の織布の
丈方向糸の畝状の凸部が、他方の織布の丈方向糸間に形
成される畝状の凹所に入り込まないように構成した。In order to achieve the above object, a papermaking felt according to the present invention is a papermaking felt obtained by needling a fiber web on one or both sides of a base fabric in which a plurality of woven fabrics are laminated. In the felt for use, the woven fabric constituting the base fabric is overlapped so that the length direction yarns are obliquely relatively oblique at the contact surface between the woven fabrics, and the length direction yarn of one of the overlapping woven fabrics is provided. The ridge-shaped convex portion of the woven fabric does not enter the ridge-shaped concave portion formed between the lengthwise yarns of the other woven fabric.
【０００９】また、請求項２に記載の発明に係る抄紙用
フェルトは、前記基布が２枚の織布で構成され、該２枚
の織布の丈方向糸を、マシンの流れ方向に対して左右対
称に斜交させたことを特徴とし、フェルトの走行がマシ
ンの流れ方向に対して左右バランスするように構成し
た。Further, in the papermaking felt according to the second aspect of the present invention, the base fabric is composed of two woven fabrics, and the lengthwise yarns of the two woven fabrics are arranged in the machine direction with respect to the machine direction. The machine is configured so that the running of the felt is balanced left and right with respect to the machine flow direction.
【００１０】さらに、請求項３に記載の発明に係る抄紙
用フェルトは、前記基布が３枚の織布で構成され、中間
層の１枚の織布の丈方向糸をマシンの流れ方向に一致さ
せ、表裏層の２枚の織布の丈方向糸を中間層の織布の丈
方向糸に対して左右対称に斜交させたことを特徴とし、
マシンの流れ方向に対する強度維持と、フェルトの走行
がマシンの流れ方向に対して左右バランスするように構
成した。Further, in the papermaking felt according to the third aspect of the present invention, the base fabric is composed of three woven fabrics, and the lengthwise yarn of one woven fabric of the intermediate layer is arranged in the machine direction. The lengthwise yarns of the two woven fabrics of the front and back layers are obliquely skewed with respect to the lengthwise yarns of the woven fabric of the middle layer,
The machine was designed to maintain strength in the machine flow direction and balance the felt running in the machine flow direction.
【００１１】さらにまた、請求項４に記載の発明に係る
抄紙用フェルトの製造方法は、複数枚の有端状の織布の
両端を突き合わせて接合し積層した無端状の基布の片面
又は両面に繊維ウエブをニードリングする抄紙用フェル
トの製造方法において、前記各層の織布の両端を接合す
るに際し、幅方向にズラして接合するとともに、ズラす
方向を各層毎に相対的に違えることを特徴とし、織布間
の接触面での斜交が簡単に得られるように構成した。Further, the method for manufacturing a felt for papermaking according to the invention according to claim 4 is characterized in that one end or both ends of an endless base fabric in which a plurality of endless woven fabrics are joined by abutting both ends and laminated. In the method for producing a papermaking felt for needling a fiber web, when joining both ends of the woven fabric of the respective layers, they are shifted in the width direction and joined, and the slipping direction is relatively different for each layer. A feature is that the oblique crossing at the contact surface between the woven fabrics is easily obtained.
【００１２】[0012]
【発明の実施の態様】次に、本発明の実施の態様につい
て、図面を参照して説明する。図１は本願フェルトを略
示的に示す断面図、図２は２枚の織布の積層状態を略示
的に示す平面図、図３は同側面断面図、図４は２枚の織
布の両端を突き合わせて接合する時に幅方向にズラす状
態を略示的に示す斜視図である。Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view schematically showing the felt of the present application, FIG. 2 is a plan view schematically showing a laminated state of two woven fabrics, FIG. 3 is a cross-sectional side view of the same, and FIG. FIG. 4 is a perspective view schematically showing a state in which the both ends are shifted in the width direction when they are joined by joining both ends.
【００１３】図１において、本願フェルト１は、複数枚
（２枚の場合を示している）の織布２ａ、２ｂを積層し
た基布３の片面（又は両面でもよい）に繊維ウエブ４を
乗せてニードリング（図示せず）してなるものであっ
て、前記基布３はこれを構成する織布２ａ、２ｂの丈方
向糸Ｗ1 とＷ2 とを織布間の接触面５で斜交６させてい
る。該斜交６の部分は、図２においてハッチングで示し
ている。In FIG. 1, a felt 1 according to the present invention has a fiber web 4 placed on one side (or both sides) of a base cloth 3 in which a plurality of (two shown) woven cloths 2a and 2b are laminated. oblique Te be comprised by needling (not shown), woven 2a the base fabric 3 constituting this, 2b and height direction yarns W 1 and W 2 at the contact surface 5 between the fabric I'm making 6 The oblique portion 6 is indicated by hatching in FIG.
【００１４】前記織布２ａ、２ｂの丈方向糸Ｗ1 とＷ2
は、図２の如く、マシンの流れ方向Ｐに対して左右対称
の傾き角θ1 、θ2 になっている。これは本願フェルト
１の走行がマシンの流れ方向に対して左右バランスする
ようにし、走行中に右ないし左に片寄らないようにして
いる。The lengthwise yarns W 1 and W 2 of the woven fabrics 2a and 2b
Have inclination angles θ 1 and θ 2 symmetrical with respect to the flow direction P of the machine as shown in FIG. This ensures that the traveling of the felt 1 of the present application is balanced right and left with respect to the flow direction of the machine, and does not shift to the right or left during traveling.
【００１５】前記織布２ａ、２ｂの丈方向糸Ｗ1 とＷ2
とを斜交６させた理由は、図３の如く、下層の織布２ｂ
の丈方向糸Ｗ2 により形成される畝状の凹所Ｂに、上層
の織布２ｂの丈方向糸Ｗ1 により形成される畝状の凸部
Ａが入り込むことをなくし、ボイドボリュームを長期に
わたって維持できるようにするためである。The length direction yarns W 1 and W 2 of the woven fabrics 2a and 2b
The reason for the oblique 6 is that, as shown in FIG.
Of the ridged recess B formed by the length direction yarns W 2, eliminated from entering the ridge-shaped convex portion A formed by the length direction yarns W 1 of the upper layer of fabric 2b, over time the void volume It is to be able to maintain.
【００１６】また、前記本願フェルト１は、図示を省略
しているが、３枚の織布を積層した基布で構成する場合
もある。この場合には、中間層の１枚の織布の丈方向糸
をマシンの流れ方向と一致させ、表裏層の２枚の織布の
丈方向糸を中間層の織布の丈方向糸に対して左右対称の
傾き角にして斜交させるとよい。即ち、中間層の１枚の
織布がマシンの流れ方向に対する強度維持を担当し、表
裏層の２枚の織布の傾きを左右対称にして走行中に右な
いし左に片寄らないようにするためである。Although not shown, the felt 1 of the present application may be constituted by a base fabric in which three woven fabrics are laminated. In this case, the lengthwise yarn of one woven fabric of the middle layer is matched with the machine flow direction, and the two lengthwise yarns of the front and back layers are aligned with the lengthwise yarn of the middle woven fabric. It is recommended that the oblique angle be set to a symmetrical inclination angle. In other words, one woven fabric in the middle layer is responsible for maintaining the strength in the machine direction, and the two woven fabrics in the front and back layers are symmetrically inclined so that they do not shift to the right or left during running. It is.
【００１７】前記２枚の織布２ａ、２ｂの丈方向糸Ｗ1
とＷ2 を斜交６させる一の方法（３枚の織布でも同じ要
領となる）を次に示す。即ち、図４の如く、織布（有端
状）２ａ、２ｂの両端２ａ′と２ａ″、２ｂ′と２ｂ″
を突き合わせて接合するに際し、幅方向Ｓ−Ｓ′にズラ
すとともに、ズラす方向を各層毎に相対的に違えるよう
にする。The lengthwise yarn W 1 of the two woven fabrics 2a, 2b
And (made also in the same way in three fabric) of W 2 One method of oblique 6 is shown below. That is, as shown in FIG. 4, both ends 2a 'and 2a "and 2b' and 2b" of the woven fabrics (ends) 2a and 2b are formed.
When they are joined by abutting, they are shifted in the width direction S-S ', and the shifting directions are made relatively different for each layer.
【００１８】例えば、織布２ａでは一端２ａ′を左（Ｓ
方向）に、他端２ａ″を右（Ｓ′方向）にズラしたとす
ると、織布２ｂでは一端２ｂ′を右（Ｓ′方向）に、他
端２ｂ″を左（Ｓ方向）にズラすようにすると、前記織
布２ａ、２ｂの丈方向糸Ｗ1とＷ2 とを簡単に斜交６さ
せることが可能となる。For example, in the woven fabric 2a, one end 2a 'is set to the left (S
Direction), the other end 2a "is shifted to the right (S 'direction). In the woven fabric 2b, the other end 2b' is shifted to the right (S 'direction) and the other end 2b" is shifted to the left (S direction). If so, the fabric 2a, easily and height direction yarns W 1 and W 2 and 2b it is possible to oblique 6.
【００１９】前記織布２ａ、２ｂの接合点を横方向へズ
ラすときのズレ量Ｌ1 、Ｌ2 によりマシン流れ方向Ｐに
対する丈方向糸Ｗ1 、Ｗ2 の傾き角θ1 、θ2 がそれぞ
れ決定される。この傾き角θ1 、θ2 は鋭角であること
がマシンの流れ方向に対する強度維持のために必要であ
るが、鋭角すぎるとボイドボリュームが潰れ易くなる一
方、鈍角過ぎるとマシンの流れ方向に対する強度維持上
不満が生ずる。具体的にはθ1 又はθ2 ＝１〜８°程
度、好ましくは１．５〜５°（丈方向糸同士の角度（θ
1 ＋θ2 ）に換算すると３〜１０°となる）程度あれば
十分に満足できるものである。The inclination angles θ 1 , θ 2 of the longitudinal yarns W 1 , W 2 with respect to the machine flow direction P are determined by the shift amounts L 1 , L 2 when the joining points of the woven fabrics 2a, 2b are shifted in the lateral direction. Each is determined. It is necessary for the inclination angles θ 1 and θ 2 to be acute angles in order to maintain strength in the machine flow direction. However, if the angles are too sharp, the void volume is easily crushed. Dissatisfaction occurs. Specifically, θ 1 or θ 2 = about 1 to 8 °, preferably 1.5 to 5 ° (the angle (θ
(1 + θ 2 ) is about 3 to 10 °), which is sufficiently satisfactory.
【００２０】[0020]
【実施例１】下記する２枚の織布２ａ（上布）と２ｂ
（下布）を用い、それぞれの丈方向糸Ｗ1 とＷ2 を斜交
させた基布３を準備した。Embodiment 1 The following two woven fabrics 2a (upper cloth) and 2b
Using (lower cloth), we were prepared each length direction yarns W 1 and W 2 base cloth 3 was interlinked obliquely to.
【００２１】 上布 経糸：ナイロンモノフィラメント２２０ｄ×４本撚糸 ５０本／５ｃｍ 緯糸：ナイロンモノフィラメント５００ｄ ５０本／５ｃｍ 織組織：平織Upper cloth Warp: Nylon monofilament 220d × 4 twin yarns 50 yarn / 5cm Weft: Nylon monofilament 500d 50 yarns / 5cm Woven structure: plain weave
【００２２】 下布 経糸：ナイロンモノフィラメント３３０ｄ×６本撚糸 ４２本／５ｃｍ 緯糸：ナイロンモノフィラメント３３０ｄ×４本撚糸 ４０本／５ｃｍ 織組織：３／１崩Lower cloth Warp: Nylon monofilament 330d × 6 twisted yarn 42 / 5cm Weft: Nylon monofilament 330d × 4 twisted yarn 40/5 / 5cm Woven structure: 3/1 break
【００２３】前記上布と下布の丈方向糸（経糸が対応、
緯糸を対応させる場合もある）Ｗ1とＷ2 はマシンの流
れ方向Ｐに対して１．５°（丈方向糸同士の角度は３
°）で斜交させた。The length direction yarns of the upper cloth and the lower cloth (the warp corresponds,
In some cases to associate the weft) W 1 and W 2 is an angle between 1.5 ° (length direction yarns with respect to the flow direction P of the machine 3
°).
【００２４】[0024]
【実施例２】実施例１と同じ２枚の織布２ａ（上布）と
２ｂ（下布）を用い、それぞれの丈方向糸同士の角度を
６°に斜交させた基布３を準備した。Example 2 A base cloth 3 was prepared by using the same two woven cloths 2a (upper cloth) and 2b (lower cloth) as in Example 1 and obliquely crossing the lengthwise yarns at an angle of 6 °. did.
【００２５】[0025]
【実施例３】実施例１と同じ２枚の織布２ａ（上布）と
２ｂ（下布）を用い、それぞれの丈方向糸同士の角度を
１０°に斜交させた基布３を準備した。Example 3 Using the same two woven cloths 2a (upper cloth) and 2b (lower cloth) as in Example 1, a base cloth 3 was prepared in which the angles between the lengthwise yarns were obliquely set to 10 °. did.
【００２６】[0026]
【比較例１】実施例１と同じ２枚の織布２ａ（上布）と
２ｂ（下布）を用い、それぞれの丈方向糸同士の角度を
０°（斜交させない）とした基布３を準備した。[Comparative Example 1] A base cloth 3 using the same two woven cloths 2a (upper cloth) and 2b (lower cloth) as in Example 1, wherein the angle between the length-direction yarns is 0 ° (do not obliquely intersect). Was prepared.
【００２７】上記実施例１〜３と、比較例１について、
次の３つの試験を実施した。即ち、基布を重ね合わせ
ることにより発生する干渉マークの低減効果の確認、
基布を重ね合わせることにより増加したボイドボリュー
ムの効果の確認、基布を重ね合わせることによるボイ
ドボリュームの維持効果の確認。With respect to Examples 1 to 3 and Comparative Example 1,
The following three tests were performed. That is, confirmation of the effect of reducing interference marks generated by overlapping the base cloths,
Confirm the effect of the increased void volume by overlapping the base cloth, and confirm the effect of maintaining the void volume by overlapping the base cloth.
【００２８】干渉マークの低減効果の確認 上記実施例１〜３と、比較例１からなる基布上に、ナイ
ロン１３ｄ（平均）からなる１００ｇ／ｍ2 ±５ｇ／ｍ
2 に調整したバットを、１〜１２枚乗せ、その上にマー
ク評価用のカーボン転写紙を重ね、３０ｋｇ／ｃｍ2 の
ロール加圧後の転写性、即ち、基布マーク・干渉マーク
を消すのに必要なバット枚数を測定したところ、実施例
１＝１０枚、実施例２＝９枚、実施例３＝９枚、比較例
１＝１２枚であった。この結果、実施例１〜３が比較例
１に対して基布マーク・干渉マークの低減効果が高いこ
とが確認された。Confirmation of Effect of Reducing Interference Mark On the base cloths of Examples 1 to 3 and Comparative Example 1, 100 g / m 2 ± 5 g / m of nylon 13d (average) was used.
Put 1 to 12 bats adjusted to 2 and place carbon transfer paper for mark evaluation on top of them, and transfer the roll after pressing with a roll of 30 kg / cm 2 , that is, erase the base cloth mark and interference mark. When the number of bats required for the measurement was measured, Example 1 = 10, Example 2 = 9, Example 3 = 9, and Comparative Example 1 = 12. As a result, it was confirmed that Examples 1 to 3 had a higher effect of reducing the base cloth mark and the interference mark than Comparative Example 1.
【００２９】ボイドボリュームの効果の確認 上記実施例１〜３と、比較例１からなる基布上に、ナイ
ロン１３ｄ（平均）からなる標準バット１０５ｇ／ｍ2
を表面に６層、裏面に２層重ねてニードルパンチにより
絡合一体化し、その後１４０°Ｃの熱ロール間に布速度
２ｍ／ｍｉｎ、加圧２０ｋｇ／ｃｍ2 で通し、約１５０
０ｇ／ｍ2 のテスト用のサンプルを製作した。Confirmation of Effect of Void Volume A standard bat made of nylon 13d (average) was 105 g / m 2 on the base fabrics of Examples 1 to 3 and Comparative Example 1.
6 layers on the front side and 2 layers on the back side are entangled and integrated by needle punch, and then passed between hot rolls at 140 ° C. at a cloth speed of 2 m / min at a pressure of 20 kg / cm 2 , and the
A test sample of 0 g / m 2 was prepared.
【００３０】上記サンプルを２０°Ｃ±２°Ｃの蒸留水
中に、１Ｈｒ浸漬した後、圧縮試験機（図示せず）によ
り３０ｋｇ／ｃｍ2 の加圧を掛け、厚みを測定してボイ
ドボリュームを確認した。結果は次表の通りとなった。After immersing the above sample in distilled water at 20 ° C. ± 2 ° C. for 1 hour, a compression tester (not shown) was used to apply a pressure of 30 kg / cm 2 to measure the thickness and reduce the void volume. confirmed. The results are as shown in the following table.
【００３１】 〔表〕 実施例１ 実施例２ 実施例３ 比較例１ サンプル坪量（ｇ／ｍ2 ） １５１２ １５２０ １５２２ １５１０ 加圧時の厚み（ｍｍ） ２．２４ ２．２９ ２．３０ ２．１９ Ｖ．Ｖ（ｃｃ／ｍ2 ） ９１４ ９５７ ９６５ ８６５ [Table] Example 1 Example 2 Example 3 Comparative Example 1 Sample basis weight (g / m 2 ) 1512 1520 1522 1510 Thickness (mm) under pressure 2.24 2.29 2.30 19 V. V (cc / m 2 ) 914 957 965 865
【００３２】上記の結果、加圧３０ｋｇ／ｃｍ2 のボイ
ドボリューム（Ｖ．Ｖ）は、比較例１に対して実施例１
で５．７％、実施例２で１０．６％、実施例３で１１．
６％増加していることが確認できた。As a result, the void volume (VV) at a pressure of 30 kg / cm 2 was larger than that of Comparative Example 1 by Example 1.
5.7% in Example 2, 10.6% in Example 2, and 11.3 in Example 3.
It was confirmed that it increased by 6%.
【００３３】ボイドボリュームの維持効果の確認 上記のテスト用のサンプルを２０°Ｃ±２°Ｃの蒸留水
中に浸漬した状態において、加圧１５０ｋｇ／ｃｍ2 、
１０ＨZ のサイクルで繰り返し圧縮試験機に掛け、指定
回数プレス後の厚み（フリー）を経時的に測定し、この
ときのボイドボリューム（フリー）の変化は次表の通り
である。Confirmation of Effect of Maintaining Void Volume In a state where the above test sample was immersed in distilled water at 20 ° C. ± 2 ° C., a pressure of 150 kg / cm 2 was applied .
Repeatedly subjected to compression testing machine at 10H Z cycle, the thickness after the specified number of times pressed (free) was measured over time, changes in the void volume (free) at this time is shown in the table below.
【００３４】 〔表〕 実施例１ 実施例２ 実施例３ 比較例１ サンプル坪量（ｇ／ｍ2 ） １５１７ １５２３ １５１１ １５０９ テスト前の厚み（ｍｍ） ３．９７ ４．００ ３．９９ ３．９８ 同Ｖ．Ｖ（ｃｃ／ｍ2 ） ２６３９ ２６６４ ２６６５ ２６５６ ２００回後厚み（ｍｍ） ３．１５ ３．２７ ３．２８ ３．０６ 同Ｖ．Ｖ（ｃｃ／ｍ2 ） １８１９ １９３４ １９５５ １７３６ １５万回後厚み（ｍｍ） ２．３８ ２．４７ ２．４９ ２．３１ 同Ｖ．Ｖ（ｃｃ／ｍ2 ） １０４９ １１３４ １１６５ ９８６Table 1 Example 1 Example 2 Example 3 Comparative Example 1 Sample basis weight (g / m 2 ) 1517 1523 1511 1509 Thickness (mm) before test 3.97 4.00 3.99 3.98 V. V (cc / m 2 ) 2639 2664 2665 2656 Thickness (mm) after 200 times 3.15 3.27 3.28 3.06 Same as V.V. V (cc / m 2 ) 1819 1934 1955 1736 Thickness (mm) after 150,000 times 2.38 2.47 2.49 2.31 Same as V.V. V (cc / m 2 ) 1049 1134 1165 986
【００３５】上記の結果、テスト前のフリーボイドボリ
ューム（Ｖ．Ｖ）に対する繰り返し２００回圧縮試験後
のボイドボリュームの保持率は、実施例１で６８．９
％、実施例２で７２．６％、実施例３で７３．４％、比
較例１で６５．４％であることが確認できた。また、テ
スト前のフリーボイドボリューム（Ｖ．Ｖ）に対する繰
り返し１５万回圧縮試験後のボイドボリュームの保持率
は、実施例１で３９．７％、実施例２で４２．６％、実
施例３で４３．７％、比較例１で３７．１％であること
が確認できた。As a result, the retention rate of the void volume after 200 repetitive compression tests with respect to the free void volume (VV) before the test was 68.9 in Example 1.
%, 72.6% in Example 2, 73.4% in Example 3, and 65.4% in Comparative Example 1. Further, the retention rates of the void volume after the repetition of 150,000 compression tests with respect to the free void volume (VV) before the test were 39.7% in Example 1, 42.6% in Example 2, and 32.6% in Example 3. Was 43.7% and that of Comparative Example 1 was 37.1%.
【００３６】即ち、繰り返し圧縮試験後の実施例１〜３
のボイドボリュームの保持率は、比較例１に対して向上
し、ボイドボリュームの維持効果においても優れている
ことが判る。That is, Examples 1 to 3 after the repeated compression test
It can be seen that the retention rate of the void volume is improved as compared with Comparative Example 1, and the void volume maintenance effect is also excellent.
【００３７】[0037]
【発明の効果】以上説明したように、本発明に係る抄紙
用フェルトは、複数枚の織布を積層した基布の片面又は
両面に繊維ウエブをニードリングしてなる抄紙用フェル
トにおいて、前記基布を構成する織布を、その丈方向糸
が織布間の接触面で相対的に斜交するように重ねたこと
を特徴としていることから、加圧下で使用されるときに
潰れ難く、ボイドボリュームが減少することがなく、搾
水機能を長期に保持できるとともに、織布間の接触面で
織布が噛み合うことがなく、干渉模様（斑模様）が発生
することがないし、常にフェルトの表面平滑性を保ち、
紙に対して干渉マーク（斑マーク）を生じさせることが
ないという優れた効果を奏する。As described above, the papermaking felt according to the present invention is a papermaking felt obtained by needling a fiber web on one or both sides of a base fabric obtained by laminating a plurality of woven fabrics. Since the woven fabric constituting the fabric is overlapped so that its length direction yarns are obliquely inclined at the contact surface between the woven fabrics, it is difficult to collapse when used under pressure, and voids The volume is not reduced, the water squeezing function can be maintained for a long time, the woven fabric does not mesh with the contact surface between the woven fabrics, no interference pattern (spot pattern) occurs, and the felt surface is always Keep smoothness,
An excellent effect is obtained in that no interference mark (spot mark) is generated on the paper.
【００３８】また、請求項２に記載の発明に係る抄紙用
フェルトは、前記基布が２枚の織布で構成され、該２枚
の織布の丈方向糸を、マシンの流れ方向に対して左右対
称に斜交させたことを特徴としているから、上記請求項
１の効果を有するほか、フェルトの走行がマシンの流れ
方向に対して左右バランスするという優れた効果を奏す
る。Further, in the papermaking felt according to the second aspect of the present invention, the base fabric is composed of two woven fabrics, and the lengthwise yarns of the two woven fabrics are arranged in the machine direction with respect to the machine direction. In addition to the effect of claim 1, there is an excellent effect that the running of the felt is balanced right and left with respect to the machine direction.
【００３９】さらに、請求項３に記載の発明に係る抄紙
用フェルトは、前記基布が３枚の織布で構成され、中間
層の１枚の織布の丈方向糸をマシンの流れ方向に一致さ
せ、表裏層の２枚の織布の丈方向糸を中間層の織布の丈
方向糸に対して左右対称に斜交させたことを特徴として
いるから、上記請求項１の効果を有するほか、マシンの
流れ方向に対する強度維持と、フェルトの走行がマシン
の流れ方向に対して左右バランスするという優れた効果
を奏する。Further, in the papermaking felt according to the third aspect of the present invention, the base fabric is formed of three woven fabrics, and the lengthwise yarn of one woven fabric of the intermediate layer is formed in the machine direction. The lengthwise yarns of the two woven fabrics of the front and back layers are obliquely skewed with respect to the lengthwise yarns of the woven fabric of the intermediate layer. In addition, there is an excellent effect that the strength is maintained in the machine flow direction and the running of the felt is balanced right and left with respect to the machine flow direction.
【００４０】さらにまた、請求項４に記載の発明に係る
抄紙用フェルトの製造方法は、複数枚の有端状の織布の
両端を突き合わせて接合し積層した無端状の基布の片面
又は両面に繊維ウエブをニードリングする抄紙用フェル
トの製造方法において、前記各層の織布の両端を接合す
るに際し、幅方向にズラして接合するとともに、ズラす
方向を各層毎に相対的に違えることを特徴としているか
ら、織布間の接触面での斜交が簡単に得られるという優
れた効果を奏する。Further, in the method for manufacturing a felt for papermaking according to the present invention, one end or both ends of an endless base fabric in which a plurality of endless woven fabrics are joined by abutting both ends and laminated. In the method for producing a papermaking felt for needling a fiber web, when joining both ends of the woven fabric of the respective layers, they are shifted in the width direction and joined, and the slipping direction is relatively different for each layer. Because of this feature, an excellent effect is obtained in that oblique contact at the contact surface between the woven fabrics can be easily obtained.
【図１】本願フェルトを略示的に示す断面図である。FIG. 1 is a sectional view schematically showing a felt of the present application.
【図２】２枚の織布の積層状態を略示的に示す平面図で
ある。FIG. 2 is a plan view schematically showing a laminated state of two woven fabrics.
【図３】同側面拡大図である。FIG. 3 is an enlarged side view of the same.
【図４】２枚の織布の両端を突き合わせて接合する時に
幅方向にズラす状態を略示的に示す斜視図である。FIG. 4 is a perspective view schematically showing a state in which two woven fabrics are shifted in the width direction when both ends of the woven fabric are butted and joined to each other.
【図５】従来フェルトの基布を略示的に示す平面図であ
る。FIG. 5 is a plan view schematically showing a conventional felt base fabric.
【図６】同側面断面図である。FIG. 6 is a side sectional view of the same.
１ 本願フェルト ２ａ、２ｂ 織布 ２ａ′、２ａ″ 織布の両端 ２ｂ′、２ｂ″ 織布の両端 ３ 基布 ４ 繊維ウエブ ５ 織布間の接触面 ６ 斜交 Ｗ1 、Ｗ2 丈方向糸 Ｐ マシン流れ方向 Ａ 畝状の凸部 Ｂ 畝状の凹所 Ｓ−Ｓ′ 幅方向 Ｌ1 、Ｌ2 ズレ量 θ1 、θ2 傾き角1 herein felt 2a, 2b fabric 2a ', 2a "woven across 2b', 2b" contact surface 6 oblique W 1 across 3 base cloth 4 the web 5 woven fabric, W 2 height direction yarns P machine flow direction a ridged protrusion B ridged recess S-S 'width L 1, L 2 shift amount θ 1, θ 2 tilt angle
Claims (4)
両面に繊維ウエブをニードリングしてなる抄紙用フェル
トにおいて、前記基布を構成する織布を、その丈方向糸
が織布間の接触面で相対的に斜交するように重ねたこと
を特徴とする抄紙用フェルト。1. A papermaking felt in which a fiber web is needled on one or both sides of a base fabric in which a plurality of woven fabrics are laminated. A felt for papermaking, wherein the felts are superposed so as to be oblique relative to each other at a contact surface between the felts.
枚の織布の丈方向糸を、マシンの流れ方向に対して左右
対称に斜交させたことを特徴とする請求項１記載の抄紙
用フェルト。2. The method according to claim 1, wherein the base fabric is composed of two woven fabrics.
2. The papermaking felt according to claim 1, wherein the length direction yarns of the woven fabric are obliquely symmetrical with respect to the flow direction of the machine.
層の１枚の織布の丈方向糸をマシンの流れ方向に一致さ
せ、表裏層の２枚の織布の丈方向糸を中間層の織布の丈
方向糸に対して左右対称に斜交させたことを特徴とする
請求項１記載の抄紙用フェルト。3. The base fabric is composed of three woven fabrics, the length direction yarns of one woven fabric of the intermediate layer are made to match the machine direction of flow, and the length direction yarns of the two woven fabrics of the front and back layers are formed. 2. The papermaking felt according to claim 1, wherein the yarns are obliquely skewed with respect to the length direction yarns of the woven fabric of the intermediate layer.
せて接合し積層した無端状の基布の片面又は両面に繊維
ウエブをニードリングする抄紙用フェルトの製造方法に
おいて、前記各層の織布の両端を接合するに際し、幅方
向にズラして接合するとともに、ズラす方向を各層毎に
相対的に違えることを特徴とする抄紙用フェルトの製造
方法。4. A method for producing a papermaking felt in which a fiber web is needled on one or both sides of an endless base fabric obtained by joining and joining two ends of a plurality of endless woven fabrics and laminating. A method for manufacturing a felt for papermaking, wherein when joining both ends of a woven fabric, the layers are shifted in the width direction and joined, and the shifting direction is relatively different for each layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18556098A JP3472483B2 (en) | 1998-06-15 | 1998-06-15 | Felt for papermaking and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18556098A JP3472483B2 (en) | 1998-06-15 | 1998-06-15 | Felt for papermaking and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11350377A true JPH11350377A (en) | 1999-12-21 |
| JP3472483B2 JP3472483B2 (en) | 2003-12-02 |
Family
ID=16172955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18556098A Expired - Fee Related JP3472483B2 (en) | 1998-06-15 | 1998-06-15 | Felt for papermaking and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3472483B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004036046A (en) * | 2002-07-04 | 2004-02-05 | Ichikawa Woolen Textile Co Ltd | Papermaking press felt |
| JP2005200819A (en) * | 2003-12-15 | 2005-07-28 | Ichikawa Woolen Textile Co Ltd | Papermaking press felt and papermaking press apparatus |
| JP2017031540A (en) * | 2015-07-28 | 2017-02-09 | イチカワ株式会社 | Felt for papermaking |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06503385A (en) * | 1990-12-17 | 1994-04-14 | アルバニー インターナショナル コーポレイション | Press felt and its manufacturing method |
| JPH07506400A (en) * | 1991-11-21 | 1995-07-13 | ウエーベック コーポレーション | multilayer felt cloth |
| WO1997020105A1 (en) * | 1995-11-30 | 1997-06-05 | Albany International Corp. | Laminated clothing, as well as method and blank for manufacturing the same |
-
1998
- 1998-06-15 JP JP18556098A patent/JP3472483B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06503385A (en) * | 1990-12-17 | 1994-04-14 | アルバニー インターナショナル コーポレイション | Press felt and its manufacturing method |
| JPH07506400A (en) * | 1991-11-21 | 1995-07-13 | ウエーベック コーポレーション | multilayer felt cloth |
| WO1997020105A1 (en) * | 1995-11-30 | 1997-06-05 | Albany International Corp. | Laminated clothing, as well as method and blank for manufacturing the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004036046A (en) * | 2002-07-04 | 2004-02-05 | Ichikawa Woolen Textile Co Ltd | Papermaking press felt |
| JP2005200819A (en) * | 2003-12-15 | 2005-07-28 | Ichikawa Woolen Textile Co Ltd | Papermaking press felt and papermaking press apparatus |
| JP4565625B2 (en) * | 2003-12-15 | 2010-10-20 | イチカワ株式会社 | Papermaking press felt and papermaking press |
| JP2017031540A (en) * | 2015-07-28 | 2017-02-09 | イチカワ株式会社 | Felt for papermaking |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3472483B2 (en) | 2003-12-02 |
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