Cellulose Acetate
Acetate is a kind of thermoplastic resin obtained by esterifying acetic acid to acetic anhydride under the action of a catalyst. Acetate is resistant to water, gasoline, mineral oil, and lipids, weak alkaline solutions, and acids, excellent weather resistance, not resistant to ethanol, strong acids, and strong alkaline solutions. During thermoforming, it is very necessary to dry the material before forming. Acetate was born in the early 20th century, and was successfully trial-produced and industrialized by the UK in the early 1920s. At present, it is the second-largest variety in cellulose fiber after viscose fiber. Acetate can be used to make textiles, cigarette filters, film bases, and plastic products.
Rimless Glasses
This kind of glasses does not have a frame to wrap the eyeglass ring, only the metal nose pad, and temples, and the lens is fixed after being punched, which is relatively lighter. This kind of glasses is lighter and more fashionable and is the first choice for ladies in the workplace.
What can I do if the rimless glasses frame is broken?
It depends on the material of the frames. If it is a metal frame, the welding effect of 50 yuan is not worth looking forward to, because the high temperature will burn the welding point and the surrounding color. The electroplating will be destroyed, and it is difficult to accept the appearance. If the metal material is alloyed copper, it will quickly corrode and produce patina. If your frame is broken in a temple, you can fix it yourself with 502 glue or duct tape, but the look will definitely be affected. Or you can go to the optician shop to change the temple. But if all the temples are broken, it's impossible to repair.
Advantages Of Acetate Frames
- Firmness and good gloss. The style is beautiful. It is not easy to be deformed and discolored, and it is durable.
- It is not easy to be corroded by the sweat of the skin and other irritants, and it will not be discolored by ultraviolet radiation.
- Diverse styles, various colors, suitable for many types of people, and easy to match clothes.
Round frame retro style
The retro style is popular. Many brands do not make a particularly popular style for women's style, so most of them are round frame-based style. The shape of the round frame is elegant and stylish, highlighting the retro and elegant atmosphere. A round frame with metal materials is an interpretation of a fashion trend fan. The small circle, thin edge, delicate details, and the manual processing highlight the connotation and depth of the artistic atmosphere.
Does it matter if the frames are broken?
If the frame is broken, there may be inconsistencies between the left and right temples. This will cause the lens optical center shift, long-term wearing will make teenagers feel dizzy and vomiting. Many people will be attributed to the high degrees of this situation. The position of the nose pads is not consistent: this kind of lens deviation from the left to the right causes the prism effect, which makes the wearer can not see clearly, blurred. When the temple is too loose or too tight, it will affect the comfort of wearing the glasses, and the excessive pressure on the temple will cause pain in the head.
Is blue light blocking worth it?
There are two main problems with anti-blue glasses currently on the market. One is that the place to be prevented is not preventable, and the other is that people have color casts due to wrong protection and aggravate visual fatigue. Studies have shown that our eyes are the most intolerant of blue light in the 400-440 nanometer band. Therefore, current manufacturers mainly block blue light in this band when producing anti-blue glasses. However, the blue waveband of electronic products is between 450 nanometers and 490 nanometers, so most anti-blue glasses have little protection in this waveband. In addition, the blocking rate of anti-blue glasses is 20%~30% to achieve a good anti-blue light effect, but now the blocking rate of anti-blue glasses on the market has basically reached 80%~90%. All in all, these blocking blue light glasses cannot prevent the blue light in the 450-490 nanometer band, and their high blocking rate will also cause a color shift, which makes people more likely to have eye fatigue and headache.
In daily life, the intensity of blue light is low, not enough to cause damage to the fundus, so ordinary people do not need to wear anti-blue glasses unless they are working in extremely strong light conditions or working in special environments. To protect the eyes, it is more important for people to develop good eye habits. For example, wear a pair of suitable glasses and read insufficient light and at an appropriate distance. Avoid using electronic products for a long time. Take a break for 20 to 30 seconds every 20 to 30 minutes, and look at the distance regularly. If you have dry eyes while reading the electronic screen, remember to blink to 12 times per minute. It is best to wear sunglasses when outdoors.
