UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
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).
Ophakathi
2 days
Imiyalelo
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.
Izinto zokwakha zalesi sinyathelo:
Ishidi lerabha elibhenyiwe250 gAmathuluzi adingekayo:
Umshini wenjoloba onama-roller amabili2
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.
Izinto zokwakha zalesi sinyathelo:
I-rosin yephayini180 gAmathuluzi adingekayo:
I-naphtha
Ijeke Lengilazi
Isigwedlo sokhuni
Isikali sesilinganiso3
3
Combine into a cement
Combine into a cement
Pour the two together and stir until even. Add naphtha until it spreads easily.
Amathuluzi adingekayo:
Ijeke LengilaziIsigwedlo sokhuniI-naphtha4
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.
Izinto zokwakha zalesi sinyathelo:
I-celluloid1 ishidiAmathuluzi adingekayo:
Induku Yokugovuza5
5
Cut into tape
Cut into tape
Cut the coated film into strips and roll them up.
Amathuluzi adingekayo:
Ummese Womsebenzi Wezandla
IrulaIzinto
3- Isibambeli
- 180 gIsibambeli
- 1 ishidiIsibambeli
Amathuluzi Adingekayo
8- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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