Log 3 - Frame Types and Parts Flashcards
Cellulose Acetate list some characteristics
- extracted from cotton or wood pulp and widely used
- can become brittle with age
- made in many colors
- light in weight
- fairly easy to work with
- uses minimal heat
Propionate plastic frame list some characteristics
- initially colorless then coated with color
- will fade quickly unless coated with UV protection
- more fragile than cellulose acetate
- hypoallergenic
- ver light in weight
- cold snap lenses or low heat
Nylon Plastic Frames list some characteristics
- generally used for sports frames because it is very flexible
- very durable
- only opaque colors available
- difficult to adjust
- hot water to mount frames
Optyl Plastic Frames - list some characteristics
- 1/3 lighter than cellulose acetate, will bend when heated and return to shape when reheated
- very light in weight
- wide range of colors
- material memory
- high heat to mount lenses
Polycarbonate Plastic frames - list some characteristics
- generally used for safety and sports frames
- holds its original shape
- light in weight
- mechanically very tough
- cold snap lenses
Polyamide Plastic Frames - list some characteristics
- nylon based material that can be made thin
- 1/4 of the weight of cellulose acetate
- hypoallergenic and resistant to chemicals
- cold snap lenses
Carbon Fiber Plastic Frames - list some characteristics
- made from strand of carbon fiber combined with nylon
- thin and light
- opaque colors only
- cannot be adjusted
- cold snap lenses
Nickel Metal Frame - list some characteristics
- widely used for metal frames, relatively inexpensive and can be combined with other materials
- Nickel
- Nickel Silvers (contains no silver used for hinges and end pieces and bridges etc.) more than 50% copper, 25% nickel and balance of zinc
- -Monel (2/3 nickel, 1/3 copper, stabalizing material)
Aluminum Metal Frame - list some characteristics
- light in weight and low in density, does not corrode
- easily colored but not stable
- difficult to solder
- very flexible
Stainless Steel Metal - list some characteristics
- developed in the early 20th century, made mainly from iron, chrome, manganese and nickel
- highly resistant to corrosion
- made very thin but sturdy
- very flexible but tough to adjust
Titanium Metal Frames - list some characteristics
- versatile and abundant material
- very light weight and strong
- corrosion resistant
- hypoallergenic
- more expensive
Memory Metal Frames - list some characteristics
- the ability to return to their original shape
- usually used for bridges and temples
- can be broken if flexed through too great an angle
List the 5 different bridge styles
- Saddle
- Modified Saddle
- Keyhole
- Pad Bridge
- Comfort Bridge
List 5 different temple styles
- Skull (most common design)
- Convertible (worn straight back or bent down)
- Library
- Comfort Cable
- Riding Bow
With regards to the strap area of a rimless front frame define the word - SHOE
piece of metal that comes in contact with the edge of the lens and braces it
