多層板是由三層或多層一毫米左右的實(shi)木單(dan)板(ban)(ban)(ban)或薄板(ban)(ban)(ban)膠貼熱壓制成,常(chang)見的有(you)三夾板(ban)(ban)(ban)、五(wu)夾板(ban)(ban)(ban)、九(jiu)夾板(ban)(ban)(ban)和十(shi)(shi)二夾板(ban)(ban)(ban)(俗稱三合板(ban)(ban)(ban),五(wu)厘板(ban)(ban)(ban),九(jiu)厘板(ban)(ban)(ban),十(shi)(shi)二厘板(ban)(ban)(ban)),結構強度好,穩定性好。
膠合板含膠量大,施工時要做好封邊處理,晝減少污染。膠合板主要用于裝飾面板的(de)底(di)板(ban)(ban)、板(ban)(ban)式家具(ju)的(de)背板(ban)(ban)等各種木制品工藝(yi)。多層板(ban)(ban)的(de)長寬(kuan)(kuan)規(gui)格和建筑模(mo)板(ban)(ban)的(de)長寬(kuan)(kuan)規(gui)格一樣,基本是:1220×2440mm,而(er)厚度規(gui)格則一般有:3、5、9、12、15、18mm等。主要樹種有:山樟(zhang)、柳按(an)、楊木、桉木等。
多層板(ban)有(you)正(zheng)反面的區別(bie)。挑選時,膠合板(ban)要(yao)木紋清(qing)晰,正(zheng)面光潔平滑,不毛糙,要(yao)平整無滯手感。多層板(ban)選購應注意(yi),多層板(ban)不應有(you)破損(sun)、碰傷(shang)、硬(ying)傷(shang)、疤節等疵點。多層板(ban)無脫膠現象。
有(you)的多層(ceng)板(ban)(ban)是將兩個不同紋(wen)路的單板(ban)(ban)貼在(zai)一起(qi)制成的,所以在(zai)選擇上要(yao)注(zhu)意夾板(ban)(ban)拼縫處應(ying)嚴密,沒有(you)高低不平現(xian)(xian)象。挑選多層(ceng)板(ban)(ban)時,應(ying)注(zhu)意挑選不散膠(jiao)的膠(jiao)合(he)板(ban)(ban)。如果手(shou)敲(qiao)膠(jiao)合(he)板(ban)(ban)各部位時,聲(sheng)音發(fa)脆,則證明質量良好(hao),若(ruo)聲(sheng)音發(fa)悶,則表示(shi)膠(jiao)合(he)板(ban)(ban)已出(chu)現(xian)(xian)散膠(jiao)現(xian)(xian)象。