cements, parchment paper


Значение термина cements, parchment paper в knolik


cements, parchment paper - Cements, Parchment Paper
cements, parchment paper - The best cement for pasting parchment paper is casein glue. It is much better than so-called chrome glue, because the latter produces yellow or brownish spots where it has been employed. Casein glue is a solution of casein, which appears as whey or drop when milk is allowed to curdle. The glue is dissolved in a saturated solution of borax. When' dried in the form of transparent gelatine, it appears as greyish white and somewhat brittle matter, which can be easily dissolved in water, and possesses great adhesiveness. When employed for pasting parchment paper, a thin paste is prepared, used in the customary manner, and the jointed places are afterwards exposed for a little while to a jet of steam.

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