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Clear Adhesive Tape: Rubber and Rosin Cement on a Clear Cellulose Film, Drew 1939
Richard Drew's clear tape (US 2,177,627, 1939): a clear cellulose film coated with a sticky rubber-and-rosin cement that stays tacky without water or heat. His Example E is 250 parts rubber to 160–200 parts rosin, dissolved, spread thin on the film, and dried. Here the film is celluloid, one of the cellulose esters he names.
The picture: a roll of clear adhesive tape (photo by BarberJP, Wikimedia Commons, public domain).
中级
2 days
说明
1
1
Break down the rubber twice
Break down the rubber twice
Mill the rubber about fifteen minutes to soften it, rest it for 24 hours, then mill it again.
此步骤所需材料：
烟胶片250 克所需工具：
双辊开炼机2
2
Dissolve rubber and rosin apart
Dissolve rubber and rosin apart
Dissolve the rubber in naphtha, stirring with a paddle. Dissolve 160–200 g of rosin in more naphtha in a second jar. Naphtha catches fire easily: no flames, work outdoors.
此步骤所需材料：
松香180 克所需工具：
石脑油
玻璃罐
木桨
等臂天平3
3
Combine into a cement
Combine into a cement
Pour the two together and stir until even. Add naphtha until it spreads easily.
所需工具：
玻璃罐木桨石脑油4
4
Spread on the clear film
Spread on the clear film
Spread a thin, even coat on one side of the clear celluloid film and let the naphtha evaporate. The coat should stay tacky.
此步骤所需材料：
赛璐珞1 张所需工具：
搅拌棒5
5
Cut into tape
Cut into tape
Cut the coated film into strips and roll them up.
所需工具：
手工刀
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