IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
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).
Àárín
2 days
Ìlànà
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.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àwo rọ́bà tí a fi èéfín gbẹ250 gÀwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ rọ́bà olórólà méjì2
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.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀dà igi paini180 gÀwọn irinṣẹ́ tí a nílò:
Naphtha
Ìgò Gílásì
Ọ̀pá ìrú igi
Òǹwọ̀n ìdọ́gba3
3
Combine into a cement
Combine into a cement
Pour the two together and stir until even. Add naphtha until it spreads easily.
Àwọn irinṣẹ́ tí a nílò:
Ìgò GílásìỌ̀pá ìrú igiNaphtha4
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.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Celluloid1 ewéÀwọn irinṣẹ́ tí a nílò:
Ọ̀pá Ìrúwé5
5
Cut into tape
Cut into tape
Cut the coated film into strips and roll them up.
Àwọn irinṣẹ́ tí a nílò:
Ọ̀bẹ Iṣẹ́ Ọwọ́
Ìdíwọ̀nÀwọn ohun-èlò
3- Àyè
- 180 gÀyè
- 1 ewéÀyè
Àwọn irinṣẹ́ tó nílò
8- Àyè
- Àyè
- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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