Taking a step back from the production process, you might be wondering what materials are used, what processes are involved, and how the waste is handled. This article explains some of these concepts.During the production process of glasses frames
, there are a number of steps taken. The first is a preliminary sketching of the prototype design. Then, detailed technical drawings are arranged for quality control purposes. This is followed by the development of a 'design-to-manufacture' process for a collection of glasses models.The design is then input into a computer system. The computer system will then curve and cut the lenses to the appropriate thickness. The glasses frame may be assembled by Boolean operations to achieve the desired overall design.
A preformed sheet of polyetherimide resin is then cut into the right shape. This process is usually performed in a hydraulic press. This is then subjected to a number of other processes. The preformed sheet is then heated to transform the resin.A rotary polishing machine is then used to give the glasses a final polish. This process removes decorative features and adds a layer of protection. The glasses frame is then stamped with a customer brand.Various materials are used in glasses frames. They vary in price, durability, and appearance. These include steel, aluminum, and titanium. The materials are chosen according to the customer's needs.In the early years, glasses frames were made from glass lenses and celluloid. Although these materials were durable and lightweight, they were also brittle and flammable. These were later replaced by plastics.Cellulose acetate is a plant-based plastic that is light, moldable, and hypoallergenic. It is often used in designer frames.
It has many advantages, including easy coloring and a high durability.Another option is to use a metal alloy. Most frames are made from Monel, which is a mixture of several metals. It is malleable, strong, and corrosion-resistant. Monel alloys are typically thin and have limited color choices.Nylon is another option for glasses frames. This durable material was first used in the 1940s. Originally, nylon was brittle, but it was later upgraded to be more durable. Nylon is also hypoallergenic.During the assembly process of glasses frames factory, there are many processes that take place. The volume of production also plays a factor in the time taken to create the glasses.The main process that is used for making glasses is die-cutting. This process involves cutting a preformed sheet of polyetherimide resin. The end result is a frame that is ready to be assembled with the lenses.
Another common method is flat cutting. Flat cutting allows for less material loss. This process also reduces material costs.Another process is the injection molding. Injection molding is a process where a synthetic resin material is injected into a mold. This process creates a solid product that is stable and resistant to bending.The same material can also be produced as the temples of glasses. These can be produced using an alloy material, such as nickel or monel. This material is also used for the front of the frame, which is usually manually welded to the nose pads and arms of the frame.