What are the materials for the mirror frame?
Glasses can be roughly divided into two parts, lenses and frames. To choose a pair of beautiful and comfortable glasses, we need to pay attention to both.
Today we will focus on discussing the materials used for mirror frames and their advantages and disadvantages.
At present, the common mirror frame materials on the market are mainly divided into two categories: plastic and metal, and plastic can be divided into injection molding and sheet metal.
1、 Plastic mirror frame
The main component of plastic raw materials is resin, which is composed of polymer synthetic resin as the main component and infiltrated into various auxiliary materials or additives. It has plasticity and motility under specific temperature and pressure, and can be molded into a certain shape, which remains unchanged under certain conditions.
1. Injection molding material
The injection molding process involves melting materials such as PC, plastic steel, TR, and injecting them into the mold for cooling and molding.
Advantages: The size stability of the entire batch is high, the processing speed is fast, and the overall cost is low.
Disadvantages: Most of them have undergone surface painting treatment, which is not wear-resistant and easy to fade, and the paint layer is easy to peel off.
It mainly includes the following categories:
A. PC material
PC material is polycarbonate, abbreviated as PC engineering plastic. PC material is actually one of the engineering plastics we refer to, and is widely used worldwide. Previously, it was commonly used in milk bottles, water cups, soybean milk machines and other cup parts, also known as “space films”.
Advantages: Good transparency. Impact resistant, chapped but free from debris, it is precisely due to this characteristic that it is commonly used in the production of sports glasses, which can effectively protect the eyes of athletes.
Disadvantages: Poor comfort and poor wear resistance, which means it is not durable.
B. TR material
TR-90 (plastic titanium) is a polymer material with memory properties, and is the most popular ultra-light mirror frame material internationally. It has characteristics such as super toughness, impact resistance, wear resistance, and low friction coefficient, which can effectively prevent injuries to the eyes and face caused by frame breakage and friction during movement.
Advantages: The material has high transparency. Good flexibility, not easy to break, can accommodate different sizes of needs. The most important thing is that the texture is very light and does not compress the bridge of the nose.
Disadvantages: The disadvantages are not obvious, and compared to other materials, they have great practicality.
C. Plastic steel material
Also known as tungsten titanium, it has become increasingly popular in recent years.
Advantages: The strength and surface hardness are better than TR. Flexibility is slightly lower than TR and higher than PC. Lightweight texture.
Disadvantages: The surface has a matte texture and requires painting treatment. There is a high demand for painting technology, and poor painting techniques can lead to brittle fracture of the frame.
2. Plate material
The eyeglass frame is made of acetate fiber board cut and processed into a frame.
A. Acetate cellulose material
The most common board materials on the market are almost all cellulose acetate.
Advantages: High surface hardness. No surface treatment required, with a noble texture and wear resistance. Suitable comfort adjustments can be made based on different facial sizes. It is a mature material commonly used in the eyewear category of international clothing brands.
Disadvantage: The material is relatively hard, and if adjusted improperly, the comfort is poor. Heavy.
B. Haima Ni material
Not many on the market, relatively common in foreign markets.
Advantages: The materials used to package the contents are relatively perfect on the market, presenting a more three-dimensional and layered texture. The surface is not painted or electroplated, making it durable and durable. The texture is lighter than cellulose acetate. Flexibility is also better than cellulose acetate. The frame can be adjusted appropriately to better fit the face size.
Disadvantage: The surface hardness is lower than that of cellulose acetate. The surface texture is not as good as cellulose acetate.
2、 Metal mirror frame
Metal frames are very common and often have a good decorative effect, with a retro style.
Metal frames are mainly divided into alloy materials, stainless steel materials, and titanium materials. Metal frames are relatively heavy in texture and have stronger decorative performance, but are prone to color fading, allergies, corrosion resistance, and deformation. I won’t go into more detail here.
