UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
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).
Hagati
2 days
Amabwiriza
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.
Ibikoresho by'iyi ntambwe:
Urupapuro rw'umupira rwumishijwe n'umwotsi250 gIbikoresho bikenewe:
Urusyo rw'umupira rufite roulo ebyiri2
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.
Ibikoresho by'iyi ntambwe:
Ubukomezi bw'igiti cya pinusi180 gIbikoresho bikenewe:
Nafita
Icupa ry'Ikirahure
Ikiyiko kinini cy'igiti
Umunzani w'ibiro3
3
Combine into a cement
Combine into a cement
Pour the two together and stir until even. Add naphtha until it spreads easily.
Ibikoresho bikenewe:
Icupa ry'IkirahureIkiyiko kinini cy'igitiNafita4
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.
Ibikoresho by'iyi ntambwe:
Seluloyide1 urupapuroIbikoresho bikenewe:
Akati ko Kuvanga5
5
Cut into tape
Cut into tape
Cut the coated film into strips and roll them up.
Ibikoresho bikenewe:
Icyuma cy'Ubukorikori
Umurongo w'ipimaIbikoresho
3- Umwanya
- Umwanya
- 1 urupapuroUmwanya
Ibikoresho bikenewe
8- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
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