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紙豆腐為什麼不能包覆空氣?



在手工造紙要使用竹簾,竹簾的特性是可以折成90度,當師傅在決定紙張厚度之後,會將含水量很多的紙放置於置紙板上,當他第一張置紙時,在置紙板上舖了一張塑膠網或布或草蓆等,這些覆蓋物須淋上水,此時濕紙上上去時能利用毛細作用,讓水份子的結合將竹簾上的紙吸附於覆蓋物上,那麼第二張完成的紙就吸附於第一張紙上,如此一直重覆置紙,形成所謂的紙豆腐。


在重覆置紙過程,竹簾須折成90度的角度,是因為紙豆腐的表面如有異物或空氣形成較高的點,紙張放上去時較高的點會讓紙豆腐的紙與竹簾上的紙槳接觸,那麼高點周圍的紙會無法接觸,而無法毛細現象,順利的讓竹簾上的紙吸附於紙豆腐上,而竹簾掀起它還附著於竹簾上,這一張紙就破掉了,所以竹簾置紙時要折成90度是為防止紙面有空氣泡產生,師傅在抄紙時,如紙面上有雜質,需用鑷子夾起,夾起的地方有破洞要修補,如此紙面同高,氣泡就不會產生,如在置紙時在紙豆腐表面形成氣泡,需用很細的吸管,用嘴巴將氣泡內的空氣吸出來,這樣才不會影響下一張紙的操作。

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廣興紙寮創立於1965年,是台灣僅從三間手工紙廠之一。廣興探索傳統造紙工藝「文化保存」與「永續創新」間的平衡。

 

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