做激光(guang)刀(dao)模所用的(de)膠合(he)木板都(dou)有哪(na)些?
膠(jiao)(jiao)合木(mu)板是(shi)原木(mu)浸水(shui)后通(tong)過卷刨切割成按(an)尺寸(cun)要求(qiu)的連續薄片板,用機器降低水(shui)分到適當標準(zhun)(zhun)值,再用尿(niao)素甲醛膠(jiao)(jiao)水(shui)以十字交(jiao)叉(cha)方式(shi)多(duo)層粘(zhan)結而成的板材。粘(zhan)結前的薄片板應(ying)按(an)標準(zhun)(zhun)分好等(deng)級且(qie)進行過預(yu)壓處理。
做激光刀模常用的有:國產楊木(mu)膠合板,國產樺(hua)木(mu)膠合板,進口芬蘭(lan)膠合板等。
膠合木(mu)板(ban)(ban)(ban)的(de)(de)構(gou)成:樺(hua)木(mu)、針(zhen)葉木(mu)、楊(yang)木(mu)、雜木(mu),準(zhun)(zhun)確地說,作為(wei)激(ji)光(guang)(guang)刀模常用的(de)(de)標準(zhun)(zhun)膠合木(mu)板(ban)(ban)(ban)應由樺(hua)木(mu)與針(zhen)葉木(mu)組成,而現今市(shi)場上(shang)的(de)(de)楊(yang)木(mu)板(ban)(ban)(ban)、雜木(mu)板(ban)(ban)(ban)、樺(hua)面楊(yang)芯板(ban)(ban)(ban)、樺(hua)面雜芯板(ban)(ban)(ban)等板(ban)(ban)(ban)的(de)(de)適應激(ji)光(guang)(guang)切割性與機械(xie)性能(彈性、應力等)均難適應作為(wei)高要(yao)求包裝(zhuang)產品的(de)(de)激(ji)光(guang)(guang)刀模板(ban)(ban)(ban)的(de)(de)要(yao)求。
樺木板的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)木紋(wen)紋(wen)路較(jiao)輕、較(jiao)美觀,芬蘭(lan)膠合(he)木板行(xing)業(ye)將它分(fen)為(wei)五(wu)個等級(ji)(ji),由高(gao)(gao)(gao)到低依(yi)次(ci)是(shi)A、B、S、BB、WG,A級(ji)(ji)為(wei)可(ke)直接(jie)上(shang)(shang)清(qing)漆(qi)的(de)(de)高(gao)(gao)(gao)質量(liang)(liang)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian);B級(ji)(ji)為(wei)適(shi)用(yong)(yong)(yong)(yong)高(gao)(gao)(gao)質量(liang)(liang)涂料(liao)、染色(se)、清(qing)漆(qi)的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian);S級(ji)(ji)為(wei)適(shi)用(yong)(yong)(yong)(yong)高(gao)(gao)(gao)質量(liang)(liang)油(you)漆(qi)、覆(fu)膜的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian);BB級(ji)(ji)為(wei)適(shi)用(yong)(yong)(yong)(yong)標準內部油(you)漆(qi)的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian);WG級(ji)(ji)為(wei)無(wu)須要求的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)。針(zhen)葉(xie)木薄片板的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)木紋(wen)紋(wen)路較(jiao)重(zhong),芬蘭(lan)膠合(he)木板行(xing)業(ye)將它也分(fen)為(wei)五(wu)個等級(ji)(ji),由高(gao)(gao)(gao)到低依(yi)次(ci)是(shi)E、EI、EⅡ、EⅧ、EIV,E級(ji)(ji)為(wei)可(ke)直接(jie)上(shang)(shang)清(qing)漆(qi)的(de)(de)高(gao)(gao)(gao)質量(liang)(liang)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian);EEI級(ji)(ji)為(wei)適(shi)用(yong)(yong)(yong)(yong)高(gao)(gao)(gao)質量(liang)(liang)涂料(liao)、染色(se)、清(qing)漆(qi)的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian);EE II級(ji)(ji)為(wei)適(shi)用(yong)(yong)(yong)(yong)普通油(you)漆(qi)、對表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)要求不高(gao)(gao)(gao)的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian);EEⅢ級(ji)(ji)為(wei)適(shi)用(yong)(yong)(yong)(yong)于(yu)對表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)要求很低的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian);EEIV級(ji)(ji)為(wei)適(shi)用(yong)(yong)(yong)(yong)于(yu)對表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)沒(mei)要求的(de)(de)表(biao)(biao)(biao)(biao)(biao)面(mian)(mian)。
以適合用作高檔(dang)(dang)激光刀(dao)模板(ban)的(de)(de)(de)芬蘭(lan)膠合木(mu)(mu)板(ban)為(wei)例,該(gai)類(lei)別(bie)芬蘭(lan)板(ban)的(de)(de)(de)基版為(wei)標(biao)準結構(gou)的(de)(de)(de)樺木(mu)(mu)板(ban),內(nei)用尿素甲(jia)醛(quan)膠水以十字交叉(cha)方式(shi)粘(zhan)結,以經過(guo)砂(sha)光處理的(de)(de)(de)S級和BB級樺木(mu)(mu)薄板(ban)為(wei)表(biao)面(mian),正反兩面(mian)均施無色或綠(lv)色透(tou)明UV固化漆,邊(bian)緣(yuan)以透(tou)明丙(bing)烯酸涂(tu)料封邊(bian)。由于芬蘭(lan)板(ban)生(sheng)產工藝中(zhong)有去疤節(jie)處理及厚度公(gong)差控制嚴格(ge)特(te)點,故高檔(dang)(dang)激光刀(dao)模多采用,以利(li)于刀(dao)線的(de)(de)(de)裝嵌和回彈膠彈力(li)的(de)(de)(de)保證。