做激光刀(dao)模所用的膠合(he)木板都有哪些?
膠合木(mu)板是原木(mu)浸水后(hou)通過卷(juan)刨切割成按尺寸要求的(de)連續薄片板,用(yong)機(ji)器降低水分到(dao)適當(dang)標準(zhun)值,再用(yong)尿素甲(jia)醛(quan)膠水以十字(zi)交叉方(fang)式(shi)多層粘(zhan)結而成的(de)板材(cai)。粘(zhan)結前的(de)薄片板應按標準(zhun)分好等(deng)級且進行過預壓處理。
做激光(guang)刀模常用的有(you):國(guo)產(chan)(chan)楊木(mu)膠(jiao)合(he)板,國(guo)產(chan)(chan)樺木(mu)膠(jiao)合(he)板,進(jin)口芬蘭膠(jiao)合(he)板等。
膠合(he)木(mu)板(ban)的(de)構成:樺(hua)(hua)木(mu)、針葉(xie)木(mu)、楊木(mu)、雜(za)(za)木(mu),準確地說,作為(wei)激(ji)光(guang)刀模常用的(de)標準膠合(he)木(mu)板(ban)應(ying)(ying)由(you)樺(hua)(hua)木(mu)與針葉(xie)木(mu)組成,而現(xian)今市(shi)場上的(de)楊木(mu)板(ban)、雜(za)(za)木(mu)板(ban)、樺(hua)(hua)面楊芯(xin)板(ban)、樺(hua)(hua)面雜(za)(za)芯(xin)板(ban)等板(ban)的(de)適(shi)應(ying)(ying)激(ji)光(guang)切割性與機械性能(neng)(彈性、應(ying)(ying)力(li)等)均難(nan)適(shi)應(ying)(ying)作為(wei)高要(yao)求包裝產品的(de)激(ji)光(guang)刀模板(ban)的(de)要(yao)求。
樺(hua)木(mu)板的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)木(mu)紋(wen)紋(wen)路(lu)較(jiao)輕、較(jiao)美(mei)觀,芬蘭膠合木(mu)板行(xing)(xing)業將它分(fen)為(wei)五(wu)個等級(ji)(ji)(ji),由(you)高(gao)到(dao)低依次是A、B、S、BB、WG,A級(ji)(ji)(ji)為(wei)可直接上(shang)清(qing)漆的(de)(de)(de)(de)高(gao)質(zhi)量(liang)(liang)表(biao)(biao)面(mian)(mian)(mian)(mian);B級(ji)(ji)(ji)為(wei)適(shi)用(yong)高(gao)質(zhi)量(liang)(liang)涂料、染色(se)(se)、清(qing)漆的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian);S級(ji)(ji)(ji)為(wei)適(shi)用(yong)高(gao)質(zhi)量(liang)(liang)油(you)(you)漆、覆膜的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian);BB級(ji)(ji)(ji)為(wei)適(shi)用(yong)標準內部油(you)(you)漆的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian);WG級(ji)(ji)(ji)為(wei)無須要(yao)求的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)。針葉(xie)木(mu)薄片(pian)板的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)木(mu)紋(wen)紋(wen)路(lu)較(jiao)重(zhong),芬蘭膠合木(mu)板行(xing)(xing)業將它也(ye)分(fen)為(wei)五(wu)個等級(ji)(ji)(ji),由(you)高(gao)到(dao)低依次是E、EI、EⅡ、EⅧ、EIV,E級(ji)(ji)(ji)為(wei)可直接上(shang)清(qing)漆的(de)(de)(de)(de)高(gao)質(zhi)量(liang)(liang)表(biao)(biao)面(mian)(mian)(mian)(mian);EEI級(ji)(ji)(ji)為(wei)適(shi)用(yong)高(gao)質(zhi)量(liang)(liang)涂料、染色(se)(se)、清(qing)漆的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian);EE II級(ji)(ji)(ji)為(wei)適(shi)用(yong)普通油(you)(you)漆、對表(biao)(biao)面(mian)(mian)(mian)(mian)要(yao)求不高(gao)的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian);EEⅢ級(ji)(ji)(ji)為(wei)適(shi)用(yong)于對表(biao)(biao)面(mian)(mian)(mian)(mian)要(yao)求很低的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian);EEIV級(ji)(ji)(ji)為(wei)適(shi)用(yong)于對表(biao)(biao)面(mian)(mian)(mian)(mian)沒要(yao)求的(de)(de)(de)(de)表(biao)(biao)面(mian)(mian)(mian)(mian)。
以(yi)適合用作高檔(dang)激光刀(dao)(dao)模板的芬(fen)蘭膠(jiao)合木(mu)板為例(li),該類別芬(fen)蘭板的基版為標(biao)準結(jie)構的樺(hua)木(mu)板,內用尿素(su)甲醛膠(jiao)水以(yi)十字交(jiao)叉方式粘結(jie),以(yi)經(jing)過砂光處理的S級和BB級樺(hua)木(mu)薄板為表面(mian),正反兩面(mian)均(jun)施無色(se)或綠色(se)透明UV固化漆,邊緣以(yi)透明丙烯酸涂料封邊。由于芬(fen)蘭板生(sheng)產工藝中有去疤節處理及厚(hou)度公差控制嚴(yan)格特點(dian),故高檔(dang)激光刀(dao)(dao)模多采用,以(yi)利于刀(dao)(dao)線(xian)的裝嵌(qian)和回彈(dan)(dan)膠(jiao)彈(dan)(dan)力的保證。