UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
Safety Spectacles: Moulded Polycarbonate with a Hard Coat
Industrial safety spectacles are injection-moulded from tough, transparent polycarbonate, often as a single front piece with the lenses, hinged to moulded temple arms; one design meeting the ANSI Z87.1 impact standard uses a lens 0.080 inch thick. Polycarbonate scratches easily, so the lenses get a thin, clear, abrasion-resistant coat of about 3–5 micrometres. Hard coats are applied by dipping or spinning after moulding: acrylate coats are cured by UV, siloxane coats by heat. Frames may be moulded in nylon.
Osezingeni eliphezulu
Factory process
Imiyalelo
1
1
Mould the front
Mould the front
Injection-mould the lens or one-piece front in polycarbonate.
Izinto zokwakha zalesi sinyathelo:
Ama-pellet e-polycarbonate0.05 kgAmathuluzi adingekayo:
Umshini wokubumba ngokujova2
2
Hard-coat
Hard-coat
Wash and dry the lens, dip it in the hard-coat solution and lift it out at an even speed.
Izinto zokwakha zalesi sinyathelo:
Isixazululo se-hard coat yelensi1 ilithaAmathuluzi adingekayo:
Ithangi lokunamathisela ngokucwilisa3
3
Cure
Cure
Dry the coat and cure it: UV for acrylate coats, heat for siloxane coats.
Amathuluzi adingekayo:
Uhhavini wokuvuthwa4
4
Mould the temples and assemble
Mould the temples and assemble
Mould the temple arms and hinge them to the front.
Izinto zokwakha zalesi sinyathelo:
Ama-pellet e-nylon0.02 kgAmathuluzi adingekayo:
Umshini wokubumba ngokujovaIzinto
3- 0.05 kgIsibambeli
- 1 ilithaIsibambeli
- 0.02 kgIsibambeli
Amathuluzi Adingekayo
3- Isibambeli
- Isibambeli
- Isibambeli
Le blueprint yenza
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