| ANTI-SCRATCH LENS (HARD COATED) |
- GENERAL
- Coated with silicone-based permanent hard coating
- Coating will not wash off
- Protect against most solvents and chemicals
- Easily cleaned and sanitized
- Not affected by metalization (mirror lens)
- PRIMARY PROPERTIES
- Permanent coatings show no loss of anti-scratch properties for a minimum of two years
- Anti-scratch coating does not affect the optical characteristics of the lens
- Provide abrasion resistance to pencil hardness of 8H
- Completely unaffected by the following chemicals or solvents:
- Low and high molecular weight alcohol
- Glycol ethers
- Aliphatic and aromatic solvents
- Weak alkali/alkaline earth solutions
- Mineral acids and exception of hydrofluoric acid
- CLEANING AND DISINFECTING METHODS
- Wipe clear with a dry clean soft cloth
- Clean with soap (mild detergent) and water
- Pad dry with clean lint free cloth
- Disinfect with the following methods: (does not affect coating)
- General disinfectant
- UV light germicide chamber
- Placed at 100 degrees C for one hour
|
| PRODUCT MATERIALS: POLYCARBONATE |
- GENERAL
- Colorless and crystal clear; amorphous engineering thermoplastic – notable for high impact resistance
- Originally developed for aerospace industry for use in windows of jets, space shuttles and face shields for astronaut helmets
- PC (polycarbonate) is very soft material allowing absorption of energy from an impact without cracking or breaking. The drawback of this feature is the tendency to scratch or craze easily; therefore, most PC lenses are treated with anti-scratch coating.
- Extremely light-weight due to its low 1.2 specific gravity
- Although seldom used for frame material, PC is more impact resistant than nylon
- PRIMARY PROPERTIES
- Optical characteristics:
| Light transmission |
88.0 % |
astm d 1003 |
| Haze |
1.0 |
astm d 1003 |
| Refractive index |
1.586 |
astm d 542 |
- UV stabilized; won't become brittle and dry out after exposure to sunlight
- Filters out 99.9 % of harmful UV radiation
- Ability to add UV 400 absorber, giving extra UV protection for environments with high levels of ultraviolet radiation
- CHEMICAL RESISTANCE:
| Acids - concentrated |
--- Fair |
| Acids - diluted |
--- Good |
| Alcohols |
--- Good |
| Alkalis |
--- Poor |
| Aromatic hydrocarbons |
--- Poor |
| Oils and greases |
--- Good |
| Halogens |
--- Poor |
| Ketones |
--- Poor |
***Please note that chemical resistance is greatly increased when coated with anti-scratch coating.
|
| PRODUCT MATERIALS: NYLON |
- GENERAL
- Nylon frames are generally tough, strong, and resilient polymers
- Nylons offer high fatigue and good barrier properties
- Nylons offer good abrasion resistance
- They offer good resistance to greases, oils, and solvents
- The most common nylon used in safety glass frames is Nylon 6.6
- PRIMARY PROPERTIES
- Permanent coatings show no loss of anti-scratch properties for a minimum of two years
- Anti-scratch coating does not affect the optical characteristics of the lens
- Provide abrasion resistance to pencil hardness of 8H
- Completely unaffected by the following chemicals or solvents:
- Low and high molecular weight alcohol
- Glycol ethers
- Aliphatic and aromatic solvents
- Weak alkali/alkaline earth solutions
- Mineral acids and exception of hydrofluoric acid
- CLEANING AND DISINFECTING METHODS
- Wipe clear with a dry clean soft cloth
- Clean with soap (mild detergent) and water
- Pad dry with clean lint free cloth
- Disinfect with the following methods: (does not affect coating)
- General disinfectant
- UV light germicide chamber
- Placed at 100 degrees C for one hour
|
| Texas America Safety Company |
| 4400 Danhil Drive |
| Brownwood, TX 76801 |
| |
| Toll Free 1-800-646-5346 |
| Outside US 1-325-646-5346 |
| Local 325-646-5346 |
| Fax 1-325-646-3790 |
| sales@tasco-safety.com |
|
