經濟部中央標隼局員工消費合作杜印聚 ~y~~--___40717g B7 五、發明説明（i ) — ~~ :-- 發明背景 Λ本發明係關於用於造紙機麼水部的壓乾。造紙機的此 15件中，含尚達約85%水的紙網通過成對相對輥間，故大 水由屬紙網擠壓出。此種過程中，濕紙網係由至少-條 織物或介於兩相對織物間支撑，織物稱作祕。壓鼓通常 -有織物基底結構，有多層棉胎針縫合於至少—面通常 兩面右干織物構造用於基本織物結構，包括單層及雙層 '、造織物織物可為連續回合平織或呈封閉迴路循環。循 環說要求壓水部可開啟來安裝壓&。縫合範安裝開放端， 隨後於壓水部上例如使用針縫藉縫合接合兩端。任一種情 兄下欲女裝織物層品於壓水部，通常較佳設置缝合部其 可於壓水部安裝過程中封閉。 縫Π。卩為壓水部織物最難製造的部分。雖然可相當直 捷形成可提供所需足夠強度、足夠排水性，及不會產生織 物痕跡的要求性質之壓氈’但壓氈是否有用也需要取決於 織物提供-個縫合部其具有足夠服務壽命，提供要求強度 ’提供要求排水性，及最重要的不會造成紙張的壓痕。 最常用於壓童毛的縫合部為針縫，其中由待接合的織物 兩端各端所得多絲紗編織回織物端來提供—組小環。織物 兩鈿利用私狀父叉兩組環而接合，及將扣針插過織物寬度 此種形式的缝合最常用於基於雙層編織物的壓氈。此種 縫合範例顯示於ΕΡ 0 294 951 ' us 4.842.925及US 4.601.785。 此等習知壓氈提供容易安裝容易於機器上縫合組裝的 本紙張尺度適用巾國g]家;^_ ( CNS ) Α4規格（2lGx 297々餐）" "—-- -4 - --------! - - - - - - T IU _ _ _ . I. . . - fA _ -'-°- (請先閱讀背面之注意事項再填寫本頁) 40717? A7 B7 五 經濟部中央標準局員工消費合作社印製 、發明説明 優點。但有缺點為：可忍受紙張上有縫合之某種壓痕及排 水要求中度的用途有限。另一缺點為施用的棉胎於縫合區 較為快速磨耗。磨耗的棉胎區覆蓋於縫合區會增加壓痕風 險，更加速縫合區的磨耗。結果導致紙張壓痕問題或機械 縫合故障或二者，造成壓氈過早失效。 曾經提議數種辦法來克服此等困難。 其中一種方法係使用兩層編織織物而非一層來提供所 謂的層合基本結構。此型織物顯示於us 3 〇86·276 :其中 兩層織物係呈偏位關係設置；&us 3·657 〇68中相對較細 與相對較粗織物設置於棉胎層兩侧。替代織物顯示於us 5.110.672。此等參考文獻中，各層藉棉胎層合，棉胎於 針缝過程中強迫與各層齧合。此等結構之共通問題為織物 赴鄰縫合之切割端傾向於糾結，結果使棉胎於織物的最主 要區域或多或少未獲支撐。結果導致紙張壓痕及缝合過早 故障。 另外曾經提議使用層合結構，其範例述於us 4 186780 及US 4.418.726，於層合物中針縫各層織物。事實上除了 無法消除單一針缝的困難外，安裝更為複雜，原因為現在 有兩個縫合部必須封閉而非一個。此種安裝步驟困難、費 犄有損縫合部的原先目的，原先希望缝合部提供安裝容易。 另一種提示係設置稱作棉胎，，翅片，，，其可以織物底部 加強，疊置於習知針缝上，較佳位於織物之紙側。其範例 述於前述CA 1.303.833及EP 〇 294 951。各案中，於組成 針縫時提供棉胎短翅片，其附著於待接合之一端且期望於 本紙張尺度適用中國國家標準（CNS ) A4規格( 210X 297^7 J ^---—1τ―m— (請先閲讀背面之注意事項再填寫本頁) 40717; ^ 經濟部中央榡準局員工消費合作社印製 五、發明説明（3 ) 針縫組裝後覆蓋接合部。US 4.601.785中推薦藉膠黏或針 縫附著棉胎翅片。US 4.842.925中推薦使用毗鄰縫合部的 脆性或可溶紗。於附著棉胎之針縫步驟中或步驟後，此等 紗被去除如此可切割棉胎翅片且安置定位。EP 〇 294 951 中推薦使用額外機器方向紗層於基底織物來加強棉胎翅片 。此種縫合部難以組裝且有支撐棉胎之翅片中之織物末端 也糾結，結果使棉胎未獲支撐導致紙張之壓痕。 發明概述 _ 本發明尋求提供此等問題的替代解決之道。提供一種 壓氈其中使用層合織物作為基本織物，僅有其第一層藉針 縫鳊至鳊接合。第一層切開而提供載有棉胎之翅片於針縫 上。第二層也相對於第一層傾斜，故切開的縫合部特別相 對於織物緯紗夾角’如此防止此等紗因織物糾結損失。第 —織物也製作成相對窄長條如此進一步減少糾結的可能。 如此第—具體例中，本發明尋求提供一種多層造纸機 壓能織物’其包含下列組合： 層編織第_織物層’其#合併有交叉機器方向之針 縫， -層第二織物層’其位於第_織物層之紙侧面， —層針織棉胎層，其施用於第二層的紙侧面，其穿透 至第:織物層内部因此將第-及第二層組合在一起，及 個翅月，包含短長度之第二織物層附著有棉胎疊置 於第一層之針縫上，其中： • 111 m - -11 (請先閱讀背面之注意事項再填寫本頁) ‘裝·Du Yinju, employee consumption cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs ~ y ~~ --___ 40717g B7 V. Description of the Invention (i)-~~:-Background of the Invention Λ The present invention relates to the pressure drying of the water department of the paper machine . Of these 15 pieces of paper machine, the paper web containing about 85% of water passed through the pair of opposing rolls, so the water was squeezed out of the paper web. In this process, the wet paper web is supported by at least one strip of fabric or between two opposing fabrics. The fabric is called a secret. The pressure drum usually has a fabric base structure, with multiple layers of cotton needles stitched to at least-usually two sides of the right dry fabric structure is used for the basic fabric structure, including single-layer and double-layer ', fabric fabric can be continuous round plain weave or closed Loop loop. The cycle requires that the pressurized water section can be opened to install the pressure &. The open end is attached to the suture fan, and then the two ends are joined to the pressurized part by, for example, using a needle seam. In any case, if you want a layer of women's clothing fabric in the pressurized water section, it is usually better to provide a sewing section that can be closed during the installation of the pressurized water section. Sew Π.卩 is the most difficult part of the fabric in the pressurized area. Although it can be formed quite straightforwardly, it can provide the required properties of sufficient strength, sufficient drainage, and no traces of fabric. However, the usefulness of the press felt also depends on the fabric provided-a stitched part with sufficient service life. Provide required strength 'to provide required drainage and, most importantly, not cause indentation of the paper. The stitches most commonly used for pressing child hair are needle stitches, in which a set of small loops are provided by weaving the multi-filament yarn obtained from each end of the fabric to be joined back to the fabric end. Fabric The two loops are joined by two sets of loops with a private parent fork, and the needle is inserted across the width of the fabric. This type of stitching is most commonly used for double-knit-based press felts. Examples of such sutures are shown in EP 0 294 951 'us 4.842.925 and US 4.601.785. These conventional press felts are easy to install and easy to sew and assemble on this paper. Applicable towels are available in this country; ^ _ (CNS) A4 size (2lGx 297 meals) " " ----4-- -------!------T IU _ _ _. I...-FA _ -'- °-(Please read the notes on the back before filling out this page) 40717? A7 B7 Five Printed by the Consumer Standards Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs and invented the advantages. However, there are disadvantages: it can tolerate some indentations on the paper and the moderate use of water drainage requirements is limited. Another disadvantage is that the applied cotton tyre wears quickly in the suture area. Covering the worn cotton area with the suture area increases the risk of indentation and accelerates the wear of the suture area. The result is paper indentation problems, mechanical stitching failures, or both, resulting in premature failure of the press felt. Several approaches have been proposed to overcome these difficulties. One method is to use two layers of woven fabric instead of one layer to provide the so-called laminated basic structure. This type of fabric is shown in US 3 086 · 276: where the two layers of fabric are placed in an offset relationship; & us 3 · 657 0 68 is relatively thinner and relatively thicker fabrics are placed on both sides of the cotton ply. Alternative fabrics are shown in us 5.110.672. In these references, the layers are laminated with a cotton tire, and the cotton tire is forced to engage with each layer during the stitching process. The common problem with these structures is that the cut ends of the fabric stitched to the neighbourhood tend to be tangled, and as a result, the cotton tire is more or less unsupported in the most important area of the fabric. As a result, paper indentations and premature stitching fail. Laminated structures have also been proposed, examples of which are described in US 4 186780 and US 4.418.726, where each layer of fabric is stitched in the laminate. In fact, in addition to being unable to eliminate the difficulty of a single stitch, installation is more complicated because now two stitches must be closed instead of one. Such installation steps are difficult and costly to damage the original purpose of the suture portion, and it was originally hoped that the suture portion provided easy installation. Another type of tip arrangement is called cotton tyre, fins, which can be reinforced at the bottom of the fabric and superimposed on a conventional stitch seam, preferably on the paper side of the fabric. Examples are described in the aforementioned CA 1.303.833 and EP 0 294 951. In each case, short fins of cotton tires are provided when forming the stitches, which are attached to one end to be joined and are expected to apply the Chinese National Standard (CNS) A4 specification (210X 297 ^ 7 J ^ ---- 1τ) to this paper size. ―M— (Please read the precautions on the back before filling this page) 40717; ^ Printed by the Consumers' Cooperative of the Central Government Bureau of the Ministry of Economic Affairs. 5. Description of the invention (3) Cover the joint after the stitching is assembled. US 4.601.785 It is recommended to attach the cotton tire fins by gluing or stitching. US 4.842.925 recommends the use of brittle or soluble yarn adjacent to the seam. These yarns are removed during or after the stitching step of the cotton tire. Cutting and positioning of cotton tire fins. EP 0294 951 recommends the use of additional machine direction yarn layers on the base fabric to strengthen the cotton tire fins. This type of stitching is difficult to assemble and has the ends of the fabric in the fins that support the cotton tires. The entanglement results in unsupported cotton tyres resulting in indentation of the paper. SUMMARY OF THE INVENTION The present invention seeks to provide an alternative solution to these problems. A press felt is provided in which a laminated fabric is used as a basic fabric with only its first layer Sew to The first layer is cut to provide the fins carrying the cotton tires on the stitches. The second layer is also inclined relative to the first layer, so the cut stitching section is particularly angled relative to the weft of the fabric, thus preventing these yarns from being caused by the fabric. Tangled loss. The first fabric is also made into a relatively narrow strip so as to further reduce the possibility of tangling. As such, in the first specific example, the present invention seeks to provide a multilayer paper machine pressure energy fabric, which includes the following combinations: '其 # incorporates stitches that cross the machine direction,-a second fabric layer' which is on the paper side of the _th fabric layer,-a layer of knitted cotton ply which is applied to the paper side of the second layer and which penetrates to The first: the fabric layer inside is the first and second layers combined, and one wing month, the second fabric layer containing a short length is attached with a cotton tire stack on the stitches of the first layer, where: • 111 m --11 (Please read the notes on the back before filling this page)
、1T 乂 • In i -I !- -- 經濟部中央樣準局員工消費合作社印製 40717; at ------ B7. 五、發明説明（4 ) " (a) 第二層包含多條相對窄的長條，及 (b) 第二層之長條設置成側緣相對於機器方向位於第 一斜面角，及 ' (c) 第一斜面角之值為大於1度至小於2〇度。 第一態樣中，織物又包含第三層於第一層之機器側 上’其中： (a) 第三層包含多條相對窄的長條，及 (b) 第三層之長條設置成侧緣相對於機器方向血於第 二斜面角，及 、 (c) 第二斜面角之值為大於1度至小於度。 圖式之簡易說明 現在參照附圖於具體例說明本發明，附圖中： 第1圖為垂直壓氈穿過針縫平面之剖面圖， 第2圖為壓氈之部分剖面紙侧視圖，及 第3圖為另一壓氈之部分剖面紙側視圖。 較佳具體例之說明 本發明中下列術語相當重要： “機器方向，，表示沿紙段長度所取方向，該方向大體平 灯壓氈移動方向；相關術語，，交又機器方向，，表示大體與機 器方向成直角的方向； 紙側表不當壓氈安裝時朝向紙張的壓氈侧或基本編 織結構侧；及㈣術語，，機器側，，表示當安裝祕時朝向麼 水部輥之壓氈側或基本編織結構側；及 “斜面角”表示基本編織結構之織物形成部侧緣與機器, 1T 乂 • In i -I!--Printed by the Consumer Cooperatives of the Central Procurement Bureau of the Ministry of Economic Affairs 40717; at ------ B7. V. Description of the Invention (4) " (a) The second layer contains A plurality of relatively narrow strips, and (b) the strips of the second layer are arranged such that the side edges thereof are located at the first bevel angle with respect to the machine direction, and (c) the value of the first bevel angle is greater than 1 degree to less than 2 〇 度。 0 degrees. In the first aspect, the fabric further includes a third layer on the machine side of the first layer, where: (a) the third layer includes a plurality of relatively narrow strips, and (b) the third layer is provided as The side edge is at the second bevel angle with respect to the machine direction, and (c) the value of the second bevel angle is greater than 1 degree and less than degree. Brief description of the drawings Now, the present invention will be described in specific examples with reference to the accompanying drawings, in which: FIG. 1 is a cross-sectional view of a vertical press felt passing through a plane of a needle seam, and FIG. 2 is a side view of a partial cross-section paper of the press felt, and Figure 3 is a side view of a section of another press felt. Description of the preferred specific examples The following terms are very important in the present invention: "Machine direction," which indicates the direction taken along the length of the paper segment, which is generally the direction of movement of the flat light felt; related terms, "cross machine direction," indicate generally A direction at right angles to the machine direction; the paper side indicates that when the press felt is installed, it faces the press felt side or the basic woven structure side of the paper; and the term, machine side, means the press felt facing the water roller when the installation is secret. Side or basic woven structure side; and "bevel angle" indicates the side of the fabric forming portion of the basic woven structure and the machine
本紙張尺度適财關家縣（CNS ) ( 210x297/>fJ n i i . I I. IV ."訂-^111—1 (請先閱讀背面之注意寧項再填4本頁) 7 407五 、發明説明（ A7 B7 經濟部中央標準局員工消費合作社印製 方向間之炎角。 首先參照第1圖，所示剖面圖係沿機器方向所取。概 略顯示⑹的壓乾主要由三層組合，可添加第四層及其包 含-個缝合部’概略如2所示。支樓基本織物包含機器側 織物3其包含缝合部2。疊置於第一層3之紙側上者為第二 層4;二層藉施用棉胎5結合在—起，棉胎穿透通過第二層 4至某種程度進人第-層3内部。若有所需可施用另一層棉 胎至第二層2之機器側，如虛線6所示。第—層如所糸為相 當簡易的雙層編織，其包含於交叉機器方向的緯紗7及於 機器方向的經紗8及II。針缝係經由將經紗長反向 編織形成而分別提供環9及12 ^缝合部藉扣針1〇***環9及 12固定在一起。此種形式的縫合構造為眾所周知。 第一織物紙侧上的上方第二織物為相對較薄織物，如 所示包含具有緯紗13及經紗14的單純編織物。此種織物層 之構造方式說明如下。於縫合部2區，第二織物4及棉胎5 於線16(若使用棉胎6亦於線17切割）提供翅片15。使用中 麼範於方向A移動，故翅片15位於縫合部扣針之線下游 〇 第2圖顯示第1圖之織物層之紙側面之部分剖面圖。紙 側面適合為棉胎層5。棉胎層5疊置於第二織物4,其位於 第一層3之紙側。第一層3編織為壓氈的全寬，而第二層編 織為遠更窄的長條，故或多或少於交叉機器方向的兩個距 離X及Y不同，γ大於X。較窄的第二層也施用於第—層上 ’而外緣4A相對於機器方向之斜面角0，機器方向指示 本紙張尺度適用中國國家標準（CNS ) A4規格（210V297公釐） ---^------裝—--!.--.l· 訂 L-----乂 (請先閱讀背面之注意事項再填寫本頁) 407173 A7 ______B7 五、發明説明（6 ) ^" 於4B其也大體平行於壓氈緣。第二層係大體使用以以等於 US 5.268.076及Rexfelt等於US 5.360.656(併述於此以供參 考）所述技術施用。 第2圖織物組裝如下。作為第一步驟，基於壓氈帶使 用的壓水部之條件，織物第一層編織層適當雙層設計。可 為平織或連續回合編織，以後者為佳。然後取適當長度織 物，於其中形成針缝合部2而提供要求長度之連續缝合環3 。然後第二層4使用大體如Best等於US 5.268.076&liexfelt 等於US 5.360.656所述技術捲繞於第一層上，其側緣4八係 相對於機器方向4B為期望之斜面角0。然後使用習知技 術施用紙側棉胎層5，或為獲得所需棉胎取向，使用Krema 等述於報告名稱”垂直鋪設膨鬆非織物，，，第七屆全球紡織 研究所會議，美國喬治亞州亞特蘭大，1994年9月（併述於 此以供參考）所述方向。施用棉胎後，棉胎5及第二織物層 4皆於扣針線之正確下游侧於16切割，故可分開缝合而安 裝於壓水部，及提供翅片15。 經濟部中央標準局員工消費合作社印製 裝--- J--'訂 (請先閲讀背面之注意事項再填寫本頁) 另一種織物顯示於第3圖。此種織物類似第丨及2圖所 不，其係以相同構造構成。如所示，織物具有紙側棉胎層 5，而其下方為捲繞於第一層3上的第二層4。此外於第二 層4概略相同類型的第三層2〇也提供於第一層3之機器侧。 用於第一層及第三層4及20之長條寬度\及乂2不同a但兩 種寬度必須選擇以防止第二層之緣接觸線對正或恰位於第 三層之緣接觸線上方，原因為任一層之緣接觸間隙皆會造 成紙張痕跡。第二層以側緣4As4B指示之機器方向間的 ( 210X297^1 )--—- 9 40717^ A? -------- B7 五、發明説明（7 ) 第斜面角0丨捲繞，第三層20係以側緣2〇A與2〇B指示之 機器方向間之斜面角捲繞。第一及第二斜面角無需相 同，且相對於機器方向無需為相同意義。 合併使用相對窄長條用於第二層或用於第二及第三層 其侧緣相對於機器方向之夾角斜面角Θ之重要性為當第二 織物被切割而於任-點打開縫合部時，僅有短長度的第二 織物紗；及使用時第三織物紗可能於壓鼓使用十糾結、糾 結量受該層之窄長條寬度χ及斜面角0值所限。- 實驗織物中發現可成功地使用低抵1 7度（對應於每米 3厘米夹角）之斜面角’至高達最大角約2〇度高於該夹角 糾結風險再度成問題。顯然希望小於約1〇度的斜面角。 若屬適宜，第-層與用於第二及第三層之長條之相對 寬度至少由壓水部部分寬度決定。長條必須具有適當編織 寬度，但必須比第一層顯著更窄，原因為若太寬則可能糾 結的紗量變多。顯然希望2:丨之比。但對寬壓水部而言可 維持此種低比高達至少約20 : 1之比顯然無用。當使用第 二及第三層時也可使用不同寬度長條。 經濟部中央標率局員工消費合作社印製 I i - n i I ^ n n I n I. — I 丁 (請先閲讀背面之注意事項再填寫本頁) 用於各層之織物編織選擇相當有彈性，主要係由提議 的使用條件決定。一般而言第一層為雙層織物，主要方便 構成針縫合部。第二層以及當使用時第三層通常為單層織 物，且較佳就每厘米紗數而言為與第一層不同的編織。可 為較細編織或較粗編織，某些用途中，可使用第二層或第 三層為雙層織物。第二及第三層織物無需相同。此外此等 織物無需為編織，某些用途可使用針織物長條。 本紙張尺度適财關家縣（CNS ) M規格（21QX297公楚） 10 407172 a7 __^ B7 五、發明説明（8 ) 元件標號對照 1.. .壓氈 2.. .縫合部 3.. .第一織物 4.. .第二層 5，6 · · ·棉胎 7.. .緯紗 8，11…經紗 9，12…環 10.. .扣針 13.. .緯紗 14…經紗 15.. .翅片 16.. .線 ---^-----—裝—---;卜訂-<------,.,i (請先閲讀背面之¾意事項再填寫本I) 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公t ) 11This paper is suitable for Guancai County (CNS) (210x297 / &f; fJ nii. I I. IV. &Quot; Order- ^ 111-1 (Please read the note on the back first and then fill in 4 pages) 7 407F Description of the invention (A7 B7 The inflammation angle between the printing directions of the staff consumer cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. First, refer to Figure 1, the cross-sectional view shown is taken in the machine direction. The outline shows that the press drying is mainly composed of three layers. You can add a fourth layer and it contains a stitching section. The outline is shown in Figure 2. The basic fabric of the branch building includes the machine-side fabric 3 which contains the stitching section 2. The one stacked on the paper side of the first layer 3 is the second. Layer 4; the second layer is combined by applying the cotton tire 5 and the cotton tire penetrates through the second layer 4 to some extent and enters the inside of the first layer 3. If necessary, another cotton tire can be applied to the second layer The machine side of 2 is shown by the dotted line 6. The first layer is a relatively simple double-layer weaving, which includes weft yarns 7 in the cross machine direction and warp yarns 8 and II in the machine direction. Long reverse knitting is formed to provide loops 9 and 12 respectively. ^ The sutures are fixed together by inserting the buckle 10 into the loops 9 and 12. This form The stitching structure of the fabric is well known. The upper second fabric on the paper side of the first fabric is a relatively thin fabric, as shown, including a simple weave with weft yarns 13 and warp yarns 14. The construction of this fabric layer is explained below. In section 2, the second fabric 4 and cotton tire 5 are provided with fins 15 at line 16 (if cotton tyre 6 is used, also cut at line 17). When in use, they move in direction A, so the fins 15 are located at the stitching part Downstream of the line. Figure 2 shows a partial cross-sectional view of the paper side of the fabric layer of Figure 1. The paper side is suitable for a cotton tire layer 5. The cotton tire layer 5 is stacked on the second fabric 4, which is located on the first layer 3. Paper side. The first layer 3 is woven as the full width of the felt, while the second layer is woven as a much narrower strip, so the two distances X and Y are different, and γ is greater than X. The narrower second layer is also applied to the first layer ', and the bevel angle of the outer edge 4A relative to the machine direction is 0, and the machine direction indicates that the paper size applies the Chinese National Standard (CNS) A4 specification (210V297 mm) --- ^ ------ Installation ----! .--. L · Order L ----- 乂 (Please read the precautions on the back before filling this page) 40 7173 A7 ______B7 V. Description of the invention (6) ^ " In 4B, it is also substantially parallel to the edge of the felt. The second layer is generally used to equal US 5.268.076 and Rexfelt equal to US 5.360.656 (and described herein as For reference) the technique is applied. Figure 2 The fabric is assembled as follows. As the first step, based on the conditions of the pressurized part used for the felt belt, the first layer of the fabric is appropriately double-layered. It can be plain weave or continuous round weaving. The latter is better. Then take an appropriate length of fabric and form a needle stitching section 2 therein to provide a continuous stitching loop 3 of the required length. The second layer 4 is then wound around the first layer using a technique generally described as Best equal to US 5.268.076 & liexfelt equal to US 5.360.656. The side edges 4 and 8 are relative to the machine direction 4B as the desired bevel angle 0. Then use conventional techniques to apply the paper side batting layer 5, or to obtain the desired orientation of the batting, use Krema et al. As described in the report titled "Laying Bulk Nonwoven Fabrics Vertically," 7th Global Textile Institute Conference, Georgia, USA Atlanta, State, September 1994 (and described here for reference). After applying the cotton tyre, the cotton tyre 5 and the second fabric layer 4 are cut at 16 on the correct downstream side of the needle thread, so they can be sewn separately It is installed in the pressurized water department and provided with fins 15. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economy --- J-- 'Order (Please read the precautions on the back before filling this page) Another kind of fabric is shown on Figure 3. This fabric is similar to that shown in Figures 1 and 2 and is constructed in the same structure. As shown, the fabric has a paper-side cotton ply 5 and the bottom is the first The second layer 4. In addition, the third layer 20 of the same type as the second layer 4 is also provided on the machine side of the first layer 3. The strip width for the first layer and the third layer 4 and 20 \ and 202 Different a, but two widths must be selected to prevent the edge of the second layer from touching the line or directly Above the edge contact line of the layer, the reason is that the edge contact gap of any layer will cause paper traces. (210X297 ^ 1) between the machine directions of the second layer indicated by the side edge 4As4B --- 9 40717 ^ A?- ------ B7 V. Description of the invention (7) The first bevel angle 0 丨 is wound, and the third layer 20 is wound at the bevel angle between the machine directions indicated by the side edges 20A and 20B. First And the second bevel angle need not be the same, and need not have the same meaning with respect to the machine direction. The use of a relatively narrow strip for the second layer or the second and third layers whose side edges are relative to the machine angle bevel angle Θ The importance is that when the second fabric is cut and the stitching section is opened at any point, there is only a second length of the second fabric yarn; and when in use, the third fabric yarn may be tangled in the press drum, and the amount of tangledness is affected by this layer The narrow strip width χ and the bevel angle 0 are limited.-It was found in the experimental fabric that the bevel angle 'as low as 17 degrees (corresponding to an angle of 3 cm per meter) can be successfully used up to a maximum angle of about 20 degrees The risk of tangling above this angle becomes a problem again. Obviously, a bevel angle less than about 10 degrees is desired. If appropriate, The relative width of the first layer and the strips used for the second and third layers is determined at least by the width of the pressurized portion. The strip must have a proper weaving width, but must be significantly narrower than the first layer because it is too wide Then the amount of tangled yarns may increase. Obviously, a ratio of 2: 丨 is desired. However, it is obviously useless to maintain such a low ratio of at least about 20: 1 for the wide pressure water section. When using the second and third layers Strips with different widths can also be used. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs I i-ni I ^ nn I n I. — I Ding (Please read the precautions on the back before filling this page) For each layer The choice of fabric weaving is quite flexible and is largely determined by the proposed conditions of use. Generally speaking, the first layer is a double-layered fabric, which is mainly convenient for forming a stitched portion. The second layer and the third layer when used are usually a single layer of fabric, and preferably are different from the first layer in terms of yarn per cm. It can be a finer weave or a coarser weave, and in some applications a second or third layer can be used as a double layer fabric. The second and third layers of fabric need not be the same. In addition, these fabrics need not be woven, and knit fabric strips may be used for some applications. The paper size is suitable for Guancai County (CNS) M specification (21QX297). 407172 a7 __ ^ B7 V. Description of the invention (8) Comparison of component numbers 1 .. Press felt 2 ... Sewing section 3 .. The first fabric 4 .. The second layer 5, 6 · · · Cotton tire 7... Weft yarn 8, 11 ... Warp yarn 9, 12 ... Loop 10.... Needle 13... Weft yarn 14 ... Warp yarn 15. .Fins 16 .. .line --- ^ ------- loading ----; buding- < --------,., I (please read the notice on the back before filling in (I) Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs This paper is printed in accordance with Chinese National Standards (CNS) A4 (210X 297 g)