做激光刀模所(suo)用(yong)的膠合木板都有(you)哪些?
膠(jiao)合木板是原木浸水后(hou)通過卷(juan)刨切割(ge)成按尺寸要求的(de)連(lian)續薄片板,用(yong)機器降低水分到(dao)適當標準值(zhi),再用(yong)尿素甲(jia)醛膠(jiao)水以十字交叉方式多(duo)層粘(zhan)結(jie)而(er)成的(de)板材。粘(zhan)結(jie)前(qian)的(de)薄片板應按標準分好(hao)等級且進行過預壓處理。
做激光(guang)刀模常用的有:國產楊(yang)木(mu)膠合(he)板,國產樺木(mu)膠合(he)板,進(jin)口芬(fen)蘭膠合(he)板等。
膠(jiao)合木板(ban)(ban)的(de)構成(cheng):樺(hua)(hua)木、針(zhen)葉木、楊木、雜木,準(zhun)確地說(shuo),作(zuo)為激光刀(dao)模常(chang)用的(de)標準(zhun)膠(jiao)合木板(ban)(ban)應(ying)由樺(hua)(hua)木與針(zhen)葉木組成(cheng),而(er)現今市場上(shang)的(de)楊木板(ban)(ban)、雜木板(ban)(ban)、樺(hua)(hua)面楊芯(xin)板(ban)(ban)、樺(hua)(hua)面雜芯(xin)板(ban)(ban)等板(ban)(ban)的(de)適應(ying)激光切割性與機械性能(neng)(彈性、應(ying)力等)均難適應(ying)作(zuo)為高要(yao)求包裝產品(pin)的(de)激光刀(dao)模板(ban)(ban)的(de)要(yao)求。
樺木(mu)(mu)板的(de)(de)表(biao)(biao)(biao)面(mian)(mian)木(mu)(mu)紋紋路(lu)較輕、較美(mei)觀,芬蘭膠(jiao)合木(mu)(mu)板行業將它(ta)分為(wei)(wei)五個等級(ji)(ji),由(you)高(gao)到低(di)依(yi)(yi)次(ci)是(shi)A、B、S、BB、WG,A級(ji)(ji)為(wei)(wei)可直接上(shang)清漆(qi)(qi)的(de)(de)高(gao)質(zhi)量(liang)(liang)(liang)表(biao)(biao)(biao)面(mian)(mian);B級(ji)(ji)為(wei)(wei)適(shi)(shi)用(yong)(yong)(yong)高(gao)質(zhi)量(liang)(liang)(liang)涂料、染色、清漆(qi)(qi)的(de)(de)表(biao)(biao)(biao)面(mian)(mian);S級(ji)(ji)為(wei)(wei)適(shi)(shi)用(yong)(yong)(yong)高(gao)質(zhi)量(liang)(liang)(liang)油漆(qi)(qi)、覆膜的(de)(de)表(biao)(biao)(biao)面(mian)(mian);BB級(ji)(ji)為(wei)(wei)適(shi)(shi)用(yong)(yong)(yong)標準內(nei)部油漆(qi)(qi)的(de)(de)表(biao)(biao)(biao)面(mian)(mian);WG級(ji)(ji)為(wei)(wei)無須要(yao)求(qiu)(qiu)的(de)(de)表(biao)(biao)(biao)面(mian)(mian)。針葉木(mu)(mu)薄片板的(de)(de)表(biao)(biao)(biao)面(mian)(mian)木(mu)(mu)紋紋路(lu)較重,芬蘭膠(jiao)合木(mu)(mu)板行業將它(ta)也(ye)分為(wei)(wei)五個等級(ji)(ji),由(you)高(gao)到低(di)依(yi)(yi)次(ci)是(shi)E、EI、EⅡ、EⅧ、EIV,E級(ji)(ji)為(wei)(wei)可直接上(shang)清漆(qi)(qi)的(de)(de)高(gao)質(zhi)量(liang)(liang)(liang)表(biao)(biao)(biao)面(mian)(mian);EEI級(ji)(ji)為(wei)(wei)適(shi)(shi)用(yong)(yong)(yong)高(gao)質(zhi)量(liang)(liang)(liang)涂料、染色、清漆(qi)(qi)的(de)(de)表(biao)(biao)(biao)面(mian)(mian);EE II級(ji)(ji)為(wei)(wei)適(shi)(shi)用(yong)(yong)(yong)普通油漆(qi)(qi)、對(dui)表(biao)(biao)(biao)面(mian)(mian)要(yao)求(qiu)(qiu)不高(gao)的(de)(de)表(biao)(biao)(biao)面(mian)(mian);EEⅢ級(ji)(ji)為(wei)(wei)適(shi)(shi)用(yong)(yong)(yong)于對(dui)表(biao)(biao)(biao)面(mian)(mian)要(yao)求(qiu)(qiu)很低(di)的(de)(de)表(biao)(biao)(biao)面(mian)(mian);EEIV級(ji)(ji)為(wei)(wei)適(shi)(shi)用(yong)(yong)(yong)于對(dui)表(biao)(biao)(biao)面(mian)(mian)沒要(yao)求(qiu)(qiu)的(de)(de)表(biao)(biao)(biao)面(mian)(mian)。
以(yi)適合用作高(gao)檔(dang)激光刀模板(ban)的(de)(de)芬蘭(lan)膠(jiao)合木板(ban)為(wei)例,該類(lei)別芬蘭(lan)板(ban)的(de)(de)基版為(wei)標準(zhun)結構的(de)(de)樺木板(ban),內用尿(niao)素甲(jia)醛膠(jiao)水以(yi)十字交叉(cha)方(fang)式粘(zhan)結,以(yi)經過砂光處(chu)理的(de)(de)S級(ji)和BB級(ji)樺木薄(bo)板(ban)為(wei)表面(mian)(mian),正(zheng)反兩面(mian)(mian)均施無色或(huo)綠色透(tou)明UV固化漆,邊(bian)緣以(yi)透(tou)明丙烯酸(suan)涂料封(feng)邊(bian)。由于芬蘭(lan)板(ban)生(sheng)產(chan)工藝中有去疤節處(chu)理及厚(hou)度公差控制嚴(yan)格特點,故高(gao)檔(dang)激光刀模多采用,以(yi)利(li)于刀線(xian)的(de)(de)裝嵌和回彈(dan)膠(jiao)彈(dan)力(li)的(de)(de)保證。