什么是(shi)裹背條(tiao)，裹背條(tiao)是(shi)通過皮殼機等機械(xie)用于精裝(zhuang)(zhuang)書(shu)(shu)(shu)(shu)(shu)本(ben)(ben)的書(shu)(shu)(shu)(shu)(shu)脊(ji)部(bu)分，使(shi)書(shu)(shu)(shu)(shu)(shu)貼(tie)連接(jie)得更加牢固。書(shu)(shu)(shu)(shu)(shu)脊(ji)制(zhi)作弧長(chang)的計算(suan)，本(ben)(ben)器規(gui)格依(yi)書(shu)(shu)(shu)(shu)(shu)芯幅面大小(xiao)進(jin)行(xing)調定，以能將書(shu)(shu)(shu)(shu)(shu)芯平穩地(di)送進(jin)夾(jia)書(shu)(shu)(shu)(shu)(shu)裝(zhuang)(zhuang)置內為標準。入(ru)本(ben)(ben)后的書(shu)(shu)(shu)(shu)(shu)冊不斜歪，四角(jiao)垂直地(di)頂齊在夾(jia)書(shu)(shu)(shu)(shu)(shu)裝(zhuang)(zhuang)置的靠板、側規(gui)內。裁切尺寸正確一(yi)致(zhi)，其質量要求與規(gui)格誤差(cha)與一(yi)般切書(shu)(shu)(shu)(shu)(shu)相(xiang)同。

夾(jia)書(shu)簽絲帶(dai)裝(zhuang)置安放在切(qie)書(shu)機(ji)與扒圓起脊機(ji)之(zhi)間(jian)。即(ji)將(jiang)切(qie)完的(de)書(shu)芯，用(yong)分本(ben)器從中間(jian)分開，再由輸放絲帶(dai)器將(jiang)絲帶(dai)夾(jia)入中心紙書(shu)芯的(de)中間(jian)靠(kao)訂縫(feng)一邊。絲帶(dai)夾(jia)在書(shu)芯內兩端各(ge)留出粘邊和使用(yong)的(de)余地(di)，再經(jing)切(qie)刀(dao)(dao)（剪刀(dao)(dao)式）將(jiang)其剪斷(duan)。

剪斷(duan)后(hou)(hou)(hou)的(de)(de)(de)(de)絲帶，裹背(bei)條芯(xin)(xin)(xin)(xin)(xin)部(bu)分(fen)被下面膠(jiao)輥著膠(jiao)、壓(ya)實完成(cheng)夾書(shu)(shu)(shu)(shu)(shu)簽(qian)絲帶過程。書(shu)(shu)(shu)(shu)(shu)簽(qian)絲帶的(de)(de)(de)(de)長度(du)與一(yi)(yi)(yi)(yi)般手工(gong)加工(gong)長度(du)基本相同，可依書(shu)(shu)(shu)(shu)(shu)冊(ce)幅面長度(du)調(diao)定。扒(ba)圓(yuan)起(qi)脊(ji)操作(zuo)及要(yao)求。書(shu)(shu)(shu)(shu)(shu)芯(xin)(xin)(xin)(xin)(xin)經裁切(qie)、夾粘(zhan)絲帶（或不夾粘(zhan)絲帶）后(hou)(hou)(hou)，繼續傳送（或翻(fan)轉變位(wei)）并做90°翻(fan)轉，使(shi)平(ping)放(fang)書(shu)(shu)(shu)(shu)(shu)芯(xin)(xin)(xin)(xin)(xin)變為(wei)后(hou)(hou)(hou)背(bei)朝上(shang)（或朝下）而進入扒(ba)圓(yuan)起(qi)脊(ji)機。扒(ba)圓(yuan)起(qi)脊(ji)機的(de)(de)(de)(de)加工(gong)，其(qi)操作(zuo)分(fen)為(wei)兩步，但(dan)機器的(de)(de)(de)(de)結構是連(lian)在一(yi)(yi)(yi)(yi)起(qi)的(de)(de)(de)(de)，均是先扒(ba)圓(yuan)后(hou)(hou)(hou)起(qi)脊(ji)。扒(ba)圓(yuan)。扒(ba)圓(yuan)起(qi)脊(ji)機在扒(ba)圓(yuan)時(shi)，由(you)一(yi)(yi)(yi)(yi)組（或一(yi)(yi)(yi)(yi)對(dui)）圓(yuan)輥，將(jiang)書(shu)(shu)(shu)(shu)(shu)芯(xin)(xin)(xin)(xin)(xin)壓(ya)緊后(hou)(hou)(hou)作(zuo)相對(dui)旋轉動作(zuo)），使(shi)書(shu)(shu)(shu)(shu)(shu)背(bei)扒(ba)成(cheng)適當規格圓(yuan)勢，加工(gong)成(cheng)圓(yuan)背(bei)書(shu)(shu)(shu)(shu)(shu)芯(xin)(xin)(xin)(xin)(xin)。書(shu)(shu)(shu)(shu)(shu)芯(xin)(xin)(xin)(xin)(xin)書(shu)(shu)(shu)(shu)(shu)背(bei)的(de)(de)(de)(de)形(xing)狀分(fen)為(wei)圓(yuan)背(bei)有(you)脊(ji)、圓(yuan)背(bei)無脊(ji)和方(fang)背(bei)（或稱平(ping)背(bei)）三種。平(ping)裝裹背(bei)條書(shu)(shu)(shu)(shu)(shu)刊的(de)(de)(de)(de)書(shu)(shu)(shu)(shu)(shu)脊(ji)不高出書(shu)(shu)(shu)(shu)(shu)芯(xin)(xin)(xin)(xin)(xin)平(ping)面，而精裝書(shu)(shu)(shu)(shu)(shu)刊的(de)(de)(de)(de)書(shu)(shu)(shu)(shu)(shu)脊(ji)一(yi)(yi)(yi)(yi)般要(yao)高出書(shu)(shu)(shu)(shu)(shu)芯(xin)(xin)(xin)(xin)(xin)的(de)(de)(de)(de)平(ping)面。書(shu)(shu)(shu)(shu)(shu)脊(ji)分(fen)為(wei)真脊(ji)和假脊(ji)。

真脊是(shi)利(li)用(yong)書(shu)(shu)(shu)背(bei)(bei)(bei)上(shang)下兩邊變(bian)形(xing)的(de)(de)(de)弧度(du)高出(chu)書(shu)(shu)(shu)芯(xin)平(ping)面；假脊則(ze)是(shi)利(li)用(yong)紙板鑲(xiang)在書(shu)(shu)(shu)背(bei)(bei)(bei)后(hou)形(xing)成的(de)(de)(de)書(shu)(shu)(shu)脊，書(shu)(shu)(shu)脊的(de)(de)(de)脊高等于封面紙板的(de)(de)(de)厚度(du)。方背(bei)(bei)(bei)書(shu)(shu)(shu)芯(xin)。是(shi)指書(shu)(shu)(shu)芯(xin)的(de)(de)(de)書(shu)(shu)(shu)背(bei)(bei)(bei)平(ping)直方正。書(shu)(shu)(shu)背(bei)(bei)(bei)不突出(chu)，與平(ping)裝書(shu)(shu)(shu)刊的(de)(de)(de)書(shu)(shu)(shu)背(bei)(bei)(bei)基(ji)本相似。

背(bei)(bei)(bei)(bei)與(yu)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)上下環襯互成直角(jiao)，由于(yu)精裝(zhuang)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)是用鎖線(xian)訂(ding)訂(ding)連(lian)，每(mei)一(yi)個書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)帖(tie)的(de)(de)訂(ding)口折縫里面(mian)(mian)都用線(xian)串過，因此，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)背(bei)(bei)(bei)(bei)脊(ji)(ji)(ji)(ji)(ji)比(bi)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)帖(tie)其(qi)它部分(fen)要(yao)厚一(yi)些，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)籍的(de)(de)帖(tie)數越多，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)脊(ji)(ji)(ji)(ji)(ji)背(bei)(bei)(bei)(bei)與(yu)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)其(qi)它部分(fen)厚度的(de)(de)差(cha)別也越大。所以方背(bei)(bei)(bei)(bei)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)的(de)(de)形(xing)式一(yi)般(ban)只(zhi)用于(yu)厚度約為(wei)20mm的(de)(de)精裝(zhuang)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)籍。圓(yuan)(yuan)(yuan)背(bei)(bei)(bei)(bei)有(you)(you)(you)脊(ji)(ji)(ji)(ji)(ji)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)。圓(yuan)(yuan)(yuan)背(bei)(bei)(bei)(bei)有(you)(you)(you)脊(ji)(ji)(ji)(ji)(ji)又(you)稱圓(yuan)(yuan)(yuan)背(bei)(bei)(bei)(bei)真脊(ji)(ji)(ji)(ji)(ji)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)。書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)背(bei)(bei)(bei)(bei)部呈(cheng)圓(yuan)(yuan)(yuan)弧形(xing)，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)脊(ji)(ji)(ji)(ji)(ji)高起(qi)有(you)(you)(you)脊(ji)(ji)(ji)(ji)(ji)壟(long)，堅(jian)硬挺(ting)實(shi)，這種(zhong)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)背(bei)(bei)(bei)(bei)的(de)(de)形(xing)式適合于(yu)裝(zhuang)訂(ding)較厚的(de)(de)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)籍，裝(zhuang)上書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)殼后有(you)(you)(you)明顯(xian)的(de)(de)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)槽(cao)，翻閱(yue)方便。目(mu)前(qian)我國的(de)(de)精裝(zhuang)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)籍多采用這種(zhong)圓(yuan)(yuan)(yuan)背(bei)(bei)(bei)(bei)有(you)(you)(you)脊(ji)(ji)(ji)(ji)(ji)的(de)(de)加工形(xing)式。圓(yuan)(yuan)(yuan)背(bei)(bei)(bei)(bei)無脊(ji)(ji)(ji)(ji)(ji)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)。圓(yuan)(yuan)(yuan)背(bei)(bei)(bei)(bei)無脊(ji)(ji)(ji)(ji)(ji)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)又(you)稱圓(yuan)(yuan)(yuan)背(bei)(bei)(bei)(bei)假脊(ji)(ji)(ji)(ji)(ji)，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)背(bei)(bei)(bei)(bei)部呈(cheng)圓(yuan)(yuan)(yuan)弧形(xing)，書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)背(bei)(bei)(bei)(bei)與(yu)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)的(de)(de)厚度相同(tong)，堅(jian)實(shi)挺(ting)括(kuo)，但沒有(you)(you)(you)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)裹背(bei)(bei)(bei)(bei)條脊(ji)(ji)(ji)(ji)(ji)。這種(zhong)形(xing)式的(de)(de)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)，一(yi)般(ban)常與(yu)軟質書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)殼或塑料壓制而(er)成的(de)(de)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)殼相配套。中心(xin)紙有(you)(you)(you)些機器(qi)還沒有(you)(you)(you)沖(chong)圓(yuan)(yuan)(yuan)裝(zhuang)置(zhi)，即將方背(bei)(bei)(bei)(bei)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)先(xian)進(jin)行沖(chong)圓(yuan)(yuan)(yuan)加工，作初步定型。先(xian)根據書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)厚度和(he)中心(xin)紙幅面(mian)(mian)大小調(diao)定好夾(jia)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)器(qi)及(ji)扒(ba)圓(yuan)(yuan)(yuan)輥（或沖(chong)圓(yuan)(yuan)(yuan)裝(zhuang)置(zhi)）的(de)(de)規矩，再使書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)芯(xin)進(jin)入(ru)夾(jia)書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)器(qi)內并送到扒(ba)圓(yuan)(yuan)(yuan)輥之間，將書(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)(shu)背(bei)(bei)(bei)(bei)扒(ba)擠成一(yi)定圓(yuan)(yuan)(yuan)勢。