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装裱修补字画用浆糊原料,主要是从面粉中提炼出来的淀粉(面粉子)。淀粉的提炼方法是:用上等面粉(富强粉)加水合成生面。将面揉匀,揉成大块面团;然后将面团放在凉水盘内,两手用力在水中揉搓面团(也可以用一块细白布将面团包起,放在水中揉搓)每斤面大约揉搓、挤压、漂洗三十分钟,面团里的淀粉即可全部洗净,沉在盆底。一般较好的精白面粉,可漂洗出70%的淀粉。淀粉洗出沉淀之后,须放在清水盆中过三至五天,等清水变成较稠的黄汤,用净勺将黄汤撇出,更换清水与淀粉搅合均匀。经过三天左右,水又变成淡黄色。按上法再换一二次清水,以清水不变色,能保持清汤为度,即可用之熬制浆糊。
Mounting pasteboard with repair materials, mainly from the flour extracted from the starch (flour son). The method of refining starch is: use the finest flour (rich powder) and water to produce raw noodles. Knead the dough into large dough; then put the dough in the cold water tray, rub the dough with both hands in the water (you can also use a thin white cloth to wrap the dough, rub it in the water) Pressure, rinse for thirty minutes, the dough in the starch can be all washed, sink in the pelvic floor. Generally better white flour, can be washed out of 70% of the starch. After the starch is washed out of the sediment, it must be placed in a clear water basin for three to five days. When the water turns thick, the yellow soup is skimmed out with a scoop. The water is replaced and the starch is evenly mixed. After three days or so, the water turned yellow again. According to the law again for a second water, water does not change color, can maintain the degree of broth, which can be boiled paste.