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What are Plastic frame glasses
24-06-26 01:24:13 By Bestsea eyewear
What are Plastic frame glasses?
Plastic frame glasses are also called injection glasses, or injection molded glasses frames. It mainly refers to a method of manufacturing glasses that uses injection molding technology, which is to inject molten plastic into the glasses mold through an injection machine, and then cool and solidify in the mold to finally form the glasses frame. The manufacturing process of injection molded glasses frames is an advanced plastic processing technology, which usually includes the following main steps.
Below is a pair of clear pink GUCCI plastic sunglasses.
1. Design and mold manufacturing of Plastic frame glasses. First, design the frame of the glasses, including the shape, size, color and texture. Then, manufacture the injection mold according to the design drawings. The mold is usually made of metal materials (such as steel or aluminum) with high precision and durability.
2. Raw material preparation of Plastic frame glasses. Select suitable plastic particles (also called resins), and select the type and color of the material according to the product design and requirements. The color is generally added to the plastic particles by preparing color powder and then mixing it evenly. For example, transparent yellow, black, etc. are all made in this way.
3. Injection molding of Plastic frame glasses. Load the selected plastic particles into the hopper of the injection molding machine, and set the parameters of the injection molding machine such as temperature, pressure and injection speed.
4. Injection molding process of Plastic frame glasses. The plastic particles are heated and pressurized and then injected into the pre-designed mold. In the mold, the plastic particles will quickly fill the cavity of the mold and then cool and solidify.
5. Cooling and demolding of Plastic frame glasses. After the injection molding is completed, the mold will be cooled to ensure that the plastic is completely solidified. Once the curing is completed, the mold will open and the molded eyeglass frame will be removed from the mold. This process is usually called demolding.
6. Post-manual processing of Plastic frame glasses. The molded eyeglass frame is trimmed and cleaned as necessary to ensure the quality and appearance of the product. For some high-quality Plastic frame glasses, manual polishing is also required to ensure the surface brightness.
7. Assembly of Plastic frame glasses. Assemble the eyeglass frame, such as installing lenses, accessories, etc.
8. Quality control and inspection of Plastic frame glasses. Perform quality inspection on the finished product, check the size, appearance, surface quality, color difference, etc. of the eyeglass frame to ensure that it meets the design requirements and customer needs
9. Packaging and shipment of Plastic frame glasses. Finally, qualified products are packaged, including the selection of packaging materials and printing of packaging labels, and then shipped to customers or sales points.
The process of injection molding eyeglass frames involves multiple links, and the precise control and reasonable arrangement of each link are crucial to the quality and cost of the final product. With the advancement of technology and changes in market demand, the process may be adjusted and optimized to meet higher production efficiency and product quality requirements.
Let's take a look at the advantages and disadvantages of injection molded eyeglass frames.
1. Plastic frame glasses are cost-effective. Compared with traditional manufacturing methods, injection molding can reduce production costs. It can often reduce production costs because it can achieve mass production and automated production, thereby achieving the purpose of reducing costs and improving production efficiency.
2. Plastic frame glasses have strong design flexibility. Through injection molding technology, various complex eyeglass frame designs can be realized to meet the diverse needs of different consumers in the market, including design freedom in color, shape, texture, etc.
3. Plastic frame glasses are light in weight and comfortable. Many injection molded eyeglass frames are made of lightweight materials, providing a better wearing experience, especially for people who need to wear glasses for a long time, with high comfort.
4. Plastic frame glasses have a wide range of material choices. Various plastic materials can be used for injection molding. Materials with different characteristics (such as flexibility, wear resistance, impact resistance, etc.) can be selected according to needs to achieve ideal functions and performance.
5. The durability of Plastic frame glasses. Modern plastic materials have excellent durability and impact resistance. They can withstand slight collisions and frictions in daily use and maintain good appearance and function.
The main materials for injection molded eyeglass frames are usually various types of plastics. Here are some common injection molded eyeglass frame materials:
Polycarbonate (PC), with excellent impact resistance and transparency, is a common high-end eyeglass frame material.
Polystyrene (PS), commonly used in affordable eyeglass frames, has good rigidity and durability.
Polyamide (PA), also known as nylon, has good durability and abrasion resistance, suitable for eyeglass frames for sports and outdoor activities.
Polypropylene (PP), lightweight and has good chemical stability and anti-aging properties, suitable for eyeglass frames for daily wear.
TR90: A special thermoplastic elastomer with extremely high elasticity and flex resistance, suitable for eyeglass frames that require both strength and comfort.
Below is a pair of clear yellow NIKE sport plastic sunglasses.
With the continuous development of injection molding technology and plastic materials, the quality and design level of plastic frame glasses are also constantly improving. Modern plastic materials not only provide better visual effects, but also meet highly personalized design requirements. In short, injection molded eyeglass frames occupy an important position in the eyewear industry with their advantages such as high efficiency, flexibility and cost-effectiveness.
