【膠合板(ban)(ban)(ban)(ban)設(she)備廠家介紹】膠合板(ban)(ban)(ban)(ban)的基(ji)本原則(ze)，為(wei)了盡量(liang)改善天然木材各向(xiang)異性(xing)(xing)的特(te)(te)性(xing)(xing)，使膠合板(ban)(ban)(ban)(ban)特(te)(te)性(xing)(xing)均勻(yun)、形(xing)狀穩定，一(yi)般膠合板(ban)(ban)(ban)(ban)在結構上(shang)都要(yao)遵守(shou)兩(liang)個基(ji)本原則(ze):一(yi)是(shi)對(dui)稱(cheng)(cheng);二是(shi)相鄰(lin)層(ceng)單(dan)板(ban)(ban)(ban)(ban)纖維互(hu)相垂直。對(dui)稱(cheng)(cheng)原則(ze)就是(shi)要(yao)求膠合板(ban)(ban)(ban)(ban)對(dui)稱(cheng)(cheng)中心平面兩(liang)側的單(dan)板(ban)(ban)(ban)(ban)，無論木材性(xing)(xing)質、單(dan)板(ban)(ban)(ban)(ban)厚度，層(ceng)數、纖維方向(xiang)，含水率等，都應該互(hu)相對(dui)稱(cheng)(cheng)。在同(tong)一(yi)張膠合板(ban)(ban)(ban)(ban)中，可以(yi)使用單(dan)一(yi)樹(shu)種(zhong)和厚度的單(dan)板(ban)(ban)(ban)(ban)，也可以(yi)使用不(bu)同(tong)樹(shu)種(zhong)和厚度的單(dan)板(ban)(ban)(ban)(ban);但對(dui)稱(cheng)(cheng)中心平面兩(liang)側任何兩(liang)層(ceng)互(hu)相對(dui)稱(cheng)(cheng)的單(dan)板(ban)(ban)(ban)(ban)樹(shu)種(zhong)和厚度要(yao)一(yi)樣。面背板(ban)(ban)(ban)(ban)允許不(bu)是(shi)同(tong)一(yi)樹(shu)種(zhong)。