Frame Materials Flashcards
(15 cards)
Cellulose acetate
*Most commonly used material
*Produced from cotton linters and acetic
acid
*Frames manufactured by routing
*Coloured by dying or laminating
*High impact resistance
*Fully reinforced sides
*Joints: pinned, screwed or heat inserted
*Softens at 57°
*Non-Hypoallergenic
Cellulose nitrate
*Illegal in the UK
*Manufactured by routing
*Brittle
*Fully reinforced sides
*Joints: Pinned
*Softens at 65°, Flash point 70°
*Non-Hypoallergenic
Acrylic/perspex
*Made from Polymethyl methacrylate
*Usually, retro supra frame from the 50s
*Manufactured by routing
*Joints: Pinned
*Coloured by lamination
*Rigid
*Lightweight but brittle
*Softens at 68°
*Hypoallergenic
Cellulose proprionate
*Injection moulded
*Fully reinforced sides
*Joints: Injected
*Coloured by lacquering or dyeing
*Softens at 67°
*Non-Hypoallergenic
SPX
*Injection moulded
*Fully reinforced frame
*Joints: Injected or screwed
*Coloured by lacquering or dyeing
*Lightweight and strong
*Softens at 95°
*Usually cold glaze only
*Hypoallergenic
Optyl
*Compression moulded
*Joints: Injected or screwed
*Thermoplastic material
*Coloured by lacquering or dyeing
*Lightweight but not flexible
*Hypoallergenic
*Softens 80° - 120°
Carbon nylon
*Injection moulded
*Joints: Screwed or injected
*Lightweight, strong, flexible
*Hypoallergenic
*Cold glazed as heating can leave
fingerprints in metal
Titanium
*Expensive to produce
*Flexible
*Corrosion and abrasion resistant
*Coloured by galvanic cladding or ion
plating
*Can be soldered if broken
*Hypoallergenic
Stainless steel
*Assembled by welding
*Lightweight
*Colour is added by electroplating
*Corrosion resistant
*Rigid but flexible
*Non-Hypoallergenic
*Can be welded if broken
Gold
*Very expensive and soft to use in frames
*Hallmarked with carat marking
*Hypoallergenic
Rolled gold/filled gold
*Layer of carat gold bonded to base metal
*Gold content marked on bridge or side
*Good corrosion resistance
*Assembled by soldering
*Hypoallergenic
Flexon
*Shape memory alloy frames
*Flexon is used for bridge and 2/3 of sides
*Titanium rims
*Assembled by laser soldering
*Electroplated colour which often chips
*Lightweight and flexible
*Non-Hypoallergenic
Aluminium
*Lightweight
*Cold to the touch
*Colour is anodised
*Stain and tarnish resistant
*Strong and rigid, adjustments difficult
*Assembled by riveting
*Non-Hypoallergenic
Nickel silver
*Doesn’t contain any silver, very little nickel
*60% copper, 20% zinc, 20% nickel
*Colour plated
*Assembled by soldering
*Easy to manufacture
*Non-Hypoallergenic
*Can be soldered if broken
Grilamide
*Injection moulded
*Polyamide
*Lightweight, flexible, strong
*Anti-corrosive
*Alcohol based cleaners can crack material
*Easy to colour
*Hypoallergenic
