一、超白光伏壓延玻璃的工藝路線是什么

超白光(guang)伏(fu)(fu)壓延(yan)(yan)玻(bo)(bo)璃(li)(li)(li)工藝路線：生產(chan)線主要(yao)由(you)原料(liao)(liao)配料(liao)(liao)系(xi)(xi)統(tong)(tong)、玻(bo)(bo)璃(li)(li)(li)熔(rong)(rong)(rong)化系(xi)(xi)統(tong)(tong)、壓延(yan)(yan)成(cheng)(cheng)(cheng)型(xing)系(xi)(xi)統(tong)(tong)、退火(huo)系(xi)(xi)統(tong)(tong)、檢驗(yan)裁切(qie)系(xi)(xi)統(tong)(tong)以(yi)及(ji)后(hou)續的(de)精(jing)加(jia)工系(xi)(xi)統(tong)(tong)組成(cheng)(cheng)(cheng)。由(you)于光(guang)伏(fu)(fu)玻(bo)(bo)璃(li)(li)(li)對于透(tou)光(guang)率的(de)要(yao)求(qiu)極(ji)高(gao)(gao)，因此在(zai)(zai)(zai)原料(liao)(liao)配料(liao)(liao)系(xi)(xi)統(tong)(tong)中(zhong)需嚴格控(kong)制(zhi)(zhi)鐵含量(liang)。合格的(de)配合料(liao)(liao)在(zai)(zai)(zai)玻(bo)(bo)璃(li)(li)(li)熔(rong)(rong)(rong)化系(xi)(xi)統(tong)(tong)中(zhong)經(jing)過(guo)高(gao)(gao)溫(wen)加(jia)熱熔(rong)(rong)(rong)融(rong)，形成(cheng)(cheng)(cheng)透(tou)明、純(chun)凈、均勻的(de)玻(bo)(bo)璃(li)(li)(li)液。隨后(hou)玻(bo)(bo)璃(li)(li)(li)液由(you)池(chi)窯沿流(liu)道流(liu)出，冷卻過(guo)程(cheng)中(zhong)，在(zai)(zai)(zai)壓延(yan)(yan)成(cheng)(cheng)(cheng)型(xing)系(xi)(xi)統(tong)(tong)中(zhong)用(yong)帶有(you)圖案花紋的(de)輥軸壓制(zhi)(zhi)形成(cheng)(cheng)(cheng)玻(bo)(bo)璃(li)(li)(li)制(zhi)(zhi)品，再送入退火(huo)爐(lu)退火(huo)，以(yi)滿足玻(bo)(bo)璃(li)(li)(li)的(de)應力要(yao)求(qiu)。從退火(huo)爐(lu)出來的(de)連續玻(bo)(bo)璃(li)(li)(li)基板，經(jing)過(guo)檢驗(yan)、切(qie)邊、切(qie)割等工序，為后(hou)續精(jing)加(jia)工提供符合質量(liang)要(yao)求(qiu)的(de)原片。在(zai)(zai)(zai)玻(bo)(bo)璃(li)(li)(li)原片基礎上(shang)進(jin)行鍍膜(mo)、鋼(gang)化等深加(jia)工處理最終形成(cheng)(cheng)(cheng)成(cheng)(cheng)(cheng)品。覆(fu)蓋在(zai)(zai)(zai)光(guang)伏(fu)(fu)組件上(shang)的(de)光(guang)伏(fu)(fu)玻(bo)(bo)璃(li)(li)(li)經(jing)過(guo)鍍膜(mo)后(hou)，可(ke)以(yi)確保有(you)更(geng)高(gao)(gao)的(de)光(guang)線透(tou)過(guo)率，使太陽能(neng)電池(chi)片可(ke)以(yi)產(chan)生更(geng)多的(de)電能(neng)；同時(shi)，經(jing)過(guo)鋼(gang)化處理的(de)光(guang)伏(fu)(fu)玻(bo)(bo)璃(li)(li)(li)具有(you)更(geng)高(gao)(gao)的(de)強度，可(ke)以(yi)使太陽能(neng)電池(chi)片承受更(geng)大(da)的(de)風壓及(ji)較大(da)的(de)晝夜溫(wen)差變化。

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二、超白光伏壓延玻璃成為主流的優勢在哪

1、壓延玻璃相比于浮法玻璃具備性能優勢及產能政策優勢

2018年工(gong)信部(bu)發布《水(shui)泥玻(bo)璃(li)(li)(li)(li)(li)行業(ye)產(chan)能(neng)置(zhi)換實施辦法(fa)(fa)(fa)》，對(dui)(dui)平板玻(bo)璃(li)(li)(li)(li)(li)新建(jian)產(chan)能(neng)實施嚴格(ge)限制，必須實行等量(liang)(liang)或減(jian)量(liang)(liang)替換。2020年，隨(sui)(sui)著光(guang)伏(fu)(fu)新增(zeng)裝機(ji)的快(kuai)速(su)增(zeng)加，光(guang)伏(fu)(fu)壓(ya)延(yan)玻(bo)璃(li)(li)(li)(li)(li)產(chan)能(neng)嚴重(zhong)短(duan)缺，為(wei)應對(dui)(dui)供(gong)(gong)給(gei)緊張局(ju)面，工(gong)信部(bu)對(dui)(dui)產(chan)能(neng)置(zhi)換辦法(fa)(fa)(fa)進(jin)行調整，對(dui)(dui)光(guang)伏(fu)(fu)玻(bo)璃(li)(li)(li)(li)(li)、汽車(che)玻(bo)璃(li)(li)(li)(li)(li)放開產(chan)能(neng)限制，光(guang)伏(fu)(fu)壓(ya)延(yan)玻(bo)璃(li)(li)(li)(li)(li)供(gong)(gong)給(gei)的釋(shi)放逐漸(jian)推動其(qi)價格(ge)回歸(gui)合理水(shui)平。在光(guang)伏(fu)(fu)壓(ya)延(yan)玻(bo)璃(li)(li)(li)(li)(li)供(gong)(gong)給(gei)緊張時期，價格(ge)持續(xu)上(shang)漲(zhang)，一些浮法(fa)(fa)(fa)玻(bo)璃(li)(li)(li)(li)(li)企業(ye)轉產(chan)光(guang)伏(fu)(fu)玻(bo)璃(li)(li)(li)(li)(li)，采用超白浮法(fa)(fa)(fa)玻(bo)璃(li)(li)(li)(li)(li)替代玻(bo)璃(li)(li)(li)(li)(li)背板以緩解(jie)供(gong)(gong)給(gei)緊張問(wen)題，但隨(sui)(sui)著產(chan)能(neng)釋(shi)放，光(guang)伏(fu)(fu)壓(ya)延(yan)玻(bo)璃(li)(li)(li)(li)(li)仍是(shi)組件廠商的首(shou)選，大部(bu)分浮法(fa)(fa)(fa)玻(bo)璃(li)(li)(li)(li)(li)企業(ye)回歸(gui)傳統行業(ye)。差(cha)異(yi)性政(zheng)策影響下，大批(pi)量(liang)(liang)光(guang)伏(fu)(fu)壓(ya)延(yan)玻(bo)璃(li)(li)(li)(li)(li)將投產(chan)，光(guang)伏(fu)(fu)玻(bo)璃(li)(li)(li)(li)(li)供(gong)(gong)給(gei)持續(xu)短(duan)缺的局(ju)面將不太可能(neng)出現，浮法(fa)(fa)(fa)玻(bo)璃(li)(li)(li)(li)(li)滲透驅動力不足。

2、壓延玻璃相比于透明有機材質背板具備耐久性優勢及成本優勢

隨著(zhu)組(zu)件面(mian)(mian)積的增(zeng)大，組(zu)件的重(zhong)量(liang)(liang)也(ye)隨之提升，增(zeng)加了運(yun)費(fei)及安裝費(fei)用(yong)，透明(ming)(ming)有(you)機材質(zhi)(zhi)(zhi)背板(ban)(ban)成為解決該(gai)痛點(dian)的一個選擇。透明(ming)(ming)有(you)機材質(zhi)(zhi)(zhi)背板(ban)(ban)主要(yao)(yao)由(you)透明(ming)(ming)PET基材和透明(ming)(ming)氟(fu)膜組(zu)成，材料的差異使得透明(ming)(ming)有(you)機材質(zhi)(zhi)(zhi)背板(ban)(ban)具備更輕的質(zhi)(zhi)(zhi)量(liang)(liang)。不過，一方面(mian)(mian)透明(ming)(ming)有(you)機材質(zhi)(zhi)(zhi)背板(ban)(ban)是否能通過大量(liang)(liang)戶(hu)外(wai)真實環(huan)境實驗及長(chang)期(qi)測試仍待檢驗，另一方面(mian)(mian)其生產制(zhi)造成本(ben)高(gao)于壓(ya)延(yan)玻璃(li)。此(ci)外(wai)，壓(ya)延(yan)玻璃(li)也(ye)在(zai)(zai)向更輕、更薄(bo)、強(qiang)度更高(gao)的趨勢發(fa)展，透明(ming)(ming)有(you)機材質(zhi)(zhi)(zhi)背板(ban)(ban)未來(lai)的應用(yong)可(ke)能更多(duo)集中在(zai)(zai)對(dui)重(zhong)量(liang)(liang)要(yao)(yao)求(qiu)嚴苛的部分屋頂光伏上，全面(mian)(mian)替代壓(ya)延(yan)玻璃(li)的可(ke)能性不高(gao)。