什么(me)是(shi)裹背(bei)條(tiao)，裹背(bei)條(tiao)是(shi)通過(guo)皮殼機(ji)(ji)等機(ji)(ji)械(xie)用于(yu)精裝書(shu)(shu)本的書(shu)(shu)脊部(bu)分，使書(shu)(shu)貼連接得(de)更加(jia)牢固。書(shu)(shu)脊制(zhi)作弧(hu)長的計算(suan)，本器規(gui)格依書(shu)(shu)芯(xin)幅面大小進行調定，以(yi)能將書(shu)(shu)芯(xin)平(ping)穩(wen)地送進夾(jia)書(shu)(shu)裝置內為標準(zhun)。入本后的書(shu)(shu)冊不斜歪(wai)，四角垂直地頂齊在夾(jia)書(shu)(shu)裝置的靠板、側(ce)規(gui)內。裁切(qie)尺(chi)寸正確一致，其質量要求(qiu)與規(gui)格誤(wu)差與一般切(qie)書(shu)(shu)相同(tong)。

夾(jia)書(shu)簽絲(si)帶(dai)裝置安放(fang)在切書(shu)機與(yu)扒圓起脊機之(zhi)間(jian)。即將(jiang)切完的(de)書(shu)芯，用分本器從中(zhong)間(jian)分開，再(zai)由(you)輸放(fang)絲(si)帶(dai)器將(jiang)絲(si)帶(dai)夾(jia)入(ru)中(zhong)心紙(zhi)書(shu)芯的(de)中(zhong)間(jian)靠訂縫一邊。絲(si)帶(dai)夾(jia)在書(shu)芯內兩(liang)端各留出粘(zhan)邊和使用的(de)余(yu)地，再(zai)經切刀(dao)（剪刀(dao)式）將(jiang)其剪斷(duan)。

 剪斷后的(de)絲(si)帶(dai)，裹背(bei)條(tiao)芯部分(fen)被下面(mian)(mian)膠輥著膠、壓實完(wan)成夾書(shu)(shu)(shu)(shu)(shu)簽絲(si)帶(dai)過程。書(shu)(shu)(shu)(shu)(shu)簽絲(si)帶(dai)的(de)長度與一(yi)(yi)(yi)般(ban)手工(gong)加(jia)(jia)工(gong)長度基(ji)本相同，可依書(shu)(shu)(shu)(shu)(shu)冊幅(fu)面(mian)(mian)長度調(diao)定。扒(ba)(ba)圓(yuan)起(qi)脊操作(zuo)(zuo)及要(yao)求。書(shu)(shu)(shu)(shu)(shu)芯經(jing)裁切、夾粘絲(si)帶(dai)（或(huo)不夾粘絲(si)帶(dai)）后，繼(ji)續傳送（或(huo)翻轉變位）并做90°翻轉，使平(ping)放書(shu)(shu)(shu)(shu)(shu)芯變為(wei)后背(bei)朝上（或(huo)朝下）而進(jin)入扒(ba)(ba)圓(yuan)起(qi)脊機(ji)(ji)。扒(ba)(ba)圓(yuan)起(qi)脊機(ji)(ji)的(de)加(jia)(jia)工(gong)，其操作(zuo)(zuo)分(fen)為(wei)兩步，但機(ji)(ji)器的(de)結構是連(lian)在一(yi)(yi)(yi)起(qi)的(de)，均是先扒(ba)(ba)圓(yuan)后起(qi)脊。扒(ba)(ba)圓(yuan)。扒(ba)(ba)圓(yuan)起(qi)脊機(ji)(ji)在扒(ba)(ba)圓(yuan)時(shi)，由一(yi)(yi)(yi)組（或(huo)一(yi)(yi)(yi)對(dui)(dui)）圓(yuan)輥，將書(shu)(shu)(shu)(shu)(shu)芯壓緊后作(zuo)(zuo)相對(dui)(dui)旋轉動(dong)作(zuo)(zuo)），使書(shu)(shu)(shu)(shu)(shu)背(bei)扒(ba)(ba)成適當規格圓(yuan)勢，加(jia)(jia)工(gong)成圓(yuan)背(bei)書(shu)(shu)(shu)(shu)(shu)芯。書(shu)(shu)(shu)(shu)(shu)芯書(shu)(shu)(shu)(shu)(shu)背(bei)的(de)形狀分(fen)為(wei)圓(yuan)背(bei)有脊、圓(yuan)背(bei)無脊和(he)方背(bei)（或(huo)稱平(ping)背(bei)）三種。平(ping)裝(zhuang)(zhuang)裹背(bei)條(tiao)書(shu)(shu)(shu)(shu)(shu)刊的(de)書(shu)(shu)(shu)(shu)(shu)脊不高出(chu)(chu)書(shu)(shu)(shu)(shu)(shu)芯平(ping)面(mian)(mian)，而精(jing)裝(zhuang)(zhuang)書(shu)(shu)(shu)(shu)(shu)刊的(de)書(shu)(shu)(shu)(shu)(shu)脊一(yi)(yi)(yi)般(ban)要(yao)高出(chu)(chu)書(shu)(shu)(shu)(shu)(shu)芯的(de)平(ping)面(mian)(mian)。書(shu)(shu)(shu)(shu)(shu)脊分(fen)為(wei)真脊和(he)假脊。

真脊(ji)是利用書(shu)(shu)背(bei)上(shang)下兩邊變(bian)形的(de)弧度高出(chu)書(shu)(shu)芯(xin)(xin)平(ping)(ping)面；假脊(ji)則(ze)是利用紙板(ban)(ban)鑲在(zai)書(shu)(shu)背(bei)后形成的(de)書(shu)(shu)脊(ji)，書(shu)(shu)脊(ji)的(de)脊(ji)高等于封面紙板(ban)(ban)的(de)厚(hou)度。方背(bei)書(shu)(shu)芯(xin)(xin)。是指書(shu)(shu)芯(xin)(xin)的(de)書(shu)(shu)背(bei)平(ping)(ping)直(zhi)方正(zheng)。書(shu)(shu)背(bei)不(bu)突(tu)出(chu)，與(yu)平(ping)(ping)裝書(shu)(shu)刊的(de)書(shu)(shu)背(bei)基本相似。

背(bei)(bei)與(yu)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯上下(xia)環(huan)襯互(hu)成(cheng)直角，由于精(jing)裝(zhuang)(zhuang)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯是用(yong)(yong)(yong)鎖線(xian)訂(ding)訂(ding)連(lian)，每一個書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)帖(tie)的(de)(de)(de)(de)(de)(de)訂(ding)口(kou)折(zhe)縫里面都(dou)用(yong)(yong)(yong)線(xian)串過，因此，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯背(bei)(bei)脊(ji)(ji)比書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)帖(tie)其它部(bu)分要厚(hou)(hou)(hou)一些，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)籍的(de)(de)(de)(de)(de)(de)帖(tie)數(shu)越多，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)脊(ji)(ji)背(bei)(bei)與(yu)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯其它部(bu)分厚(hou)(hou)(hou)度的(de)(de)(de)(de)(de)(de)差別也越大(da)。所以(yi)方(fang)背(bei)(bei)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯的(de)(de)(de)(de)(de)(de)形式(shi)(shi)一般(ban)只(zhi)用(yong)(yong)(yong)于厚(hou)(hou)(hou)度約為20mm的(de)(de)(de)(de)(de)(de)精(jing)裝(zhuang)(zhuang)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)籍。圓(yuan)(yuan)(yuan)背(bei)(bei)有(you)(you)(you)脊(ji)(ji)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯。圓(yuan)(yuan)(yuan)背(bei)(bei)有(you)(you)(you)脊(ji)(ji)又稱(cheng)圓(yuan)(yuan)(yuan)背(bei)(bei)真脊(ji)(ji)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯。書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯背(bei)(bei)部(bu)呈圓(yuan)(yuan)(yuan)弧形，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)脊(ji)(ji)高起有(you)(you)(you)脊(ji)(ji)壟，堅(jian)硬挺實，這(zhe)種(zhong)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)背(bei)(bei)的(de)(de)(de)(de)(de)(de)形式(shi)(shi)適(shi)合于裝(zhuang)(zhuang)訂(ding)較厚(hou)(hou)(hou)的(de)(de)(de)(de)(de)(de)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)籍，裝(zhuang)(zhuang)上書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)殼(ke)后有(you)(you)(you)明顯的(de)(de)(de)(de)(de)(de)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)槽(cao)，翻閱方(fang)便(bian)。目(mu)前我國的(de)(de)(de)(de)(de)(de)精(jing)裝(zhuang)(zhuang)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)籍多采(cai)用(yong)(yong)(yong)這(zhe)種(zhong)圓(yuan)(yuan)(yuan)背(bei)(bei)有(you)(you)(you)脊(ji)(ji)的(de)(de)(de)(de)(de)(de)加(jia)工形式(shi)(shi)。圓(yuan)(yuan)(yuan)背(bei)(bei)無(wu)脊(ji)(ji)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯。圓(yuan)(yuan)(yuan)背(bei)(bei)無(wu)脊(ji)(ji)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯又稱(cheng)圓(yuan)(yuan)(yuan)背(bei)(bei)假脊(ji)(ji)，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯背(bei)(bei)部(bu)呈圓(yuan)(yuan)(yuan)弧形，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)背(bei)(bei)與(yu)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯的(de)(de)(de)(de)(de)(de)厚(hou)(hou)(hou)度相同，堅(jian)實挺括，但沒(mei)(mei)有(you)(you)(you)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)裹(guo)背(bei)(bei)條脊(ji)(ji)。這(zhe)種(zhong)形式(shi)(shi)的(de)(de)(de)(de)(de)(de)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯，一般(ban)常與(yu)軟質書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)殼(ke)或塑(su)料壓制而(er)成(cheng)的(de)(de)(de)(de)(de)(de)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)殼(ke)相配套。中心紙有(you)(you)(you)些機器還沒(mei)(mei)有(you)(you)(you)沖(chong)圓(yuan)(yuan)(yuan)裝(zhuang)(zhuang)置，即(ji)將(jiang)方(fang)背(bei)(bei)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)先進(jin)行沖(chong)圓(yuan)(yuan)(yuan)加(jia)工，作(zuo)初步定(ding)型。先根(gen)據書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯厚(hou)(hou)(hou)度和中心紙幅(fu)面大(da)小調定(ding)好夾書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)器及(ji)扒圓(yuan)(yuan)(yuan)輥(gun)（或沖(chong)圓(yuan)(yuan)(yuan)裝(zhuang)(zhuang)置）的(de)(de)(de)(de)(de)(de)規(gui)矩(ju)，再(zai)使書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯進(jin)入夾書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)器內并送(song)到(dao)扒圓(yuan)(yuan)(yuan)輥(gun)之(zhi)間，將(jiang)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)背(bei)(bei)扒擠成(cheng)一定(ding)圓(yuan)(yuan)(yuan)勢。