Ukusebenzisana
UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Clear Laminating Film: Polyvinyl Butyral Plasticised with Tributyl Citrate and Extruded (Nason, Monsanto, US 2,126,028)
The clear layer inside safety glass must stay rubbery from frost to summer heat and stick to glass on its own. Nason softened polyvinyl butyral with tributyl citrate, which stays in the film far better than the usual phthalate.
Result: a clear, rubbery, non-tacky film that bonds glass under heat and pressure without glue.
Source: Nason, US 2,126,028 (Monsanto, 1938). He used Butvar resin; ours is the polyvinyl butyral we make. Not given: film thickness. Picture drawn by Youblob.
Ophakathi
1 day
Imiyalelo
1
1
Weigh resin and plasticiser
Weigh resin and plasticiser
Take 100 parts of polyvinyl butyral resin and 50 parts of tributyl citrate (Nason: 50 or more parts mix freely).
Izinto zokwakha zalesi sinyathelo:
Inhlaka ye-polyvinyl butyral100 parts
I-tributyl citrate50 partsAmathuluzi adingekayo:
Isikali sesilinganiso2
2
Mix with slight warming
Mix with slight warming
Work them together with slight warming in a mixer (or dissolve both in acetone and let it evaporate) until the mass is even.
Amathuluzi adingekayo:
Ithangi lokuxuba elivaliwe
Ipuleti Elishisayo3
3
Extrude into sheet
Extrude into sheet
Sheet the plasticised resin, for example by extrusion under pressure. Ours: a plastic extruder with a slot die. Thickness: not given.
Amathuluzi adingekayo:
I-extruder yepulasitiki
Isikhunta se-extrusion4
4
Check the film
Check the film
The film should be clear, moderately soft and rubbery, but not tacky. Pressed hot between glass sheets it bonds without adhesive.
Amathuluzi adingekayo:
Ipuleti ElishisayoIzinto
2- 100 partsIsibambeli
- 50 partsIsibambeli
Amathuluzi Adingekayo
5- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
Le blueprint yenza
CC0 Isizinda Somphakathi
Le blueprint ikhishwe ngaphansi kwe-CC0. Ukhululekile ukukopisha, ukuguqula, ukusabalalisa, nokusebenzisa ngaphandle kwemvume.
Sekela uMenzi ngokuthenga imikhiqizo nge-Blueprint yabo IKhomishane Yomenzi kumiswe ngabathengisi, noma dala inguqulo entsha yale Blueprint bese uyifaka njengoxhumaniso ku-Blueprint yakho ukuze wabelane ngemali engenayo.