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How Are Sunglasses Made?

May 24, 2023

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Plastic sunglasses have become increasingly popular in recent years due to their affordability, versatility, and wide range of styles. These sunglasses are made from a variety of materials, including acetate, nylon, and polycarbonate, which provide durability and flexibility. Plastic frames also offer a wider range of color options and can be molded into unique shapes and designs. Additionally, Plastic sunglasses are usually more affordable, making them accessible to a wider range of consumers.

Plastic sunglasses manufacturing process

1. 2D and 3D drawing: Creating a blueprint for the design

Once we had a design idea for a sunglass, we needed to convert the idea into 2D and 3D drawings so that the construction and functionality of the glasses could be more visually displayed. This allows us to easily manufacture the eyewear and make the necessary improvements in the eyewear manufacturing process.

2D Sunglasses Drawing
2D Sunglasses Drawing
How are sunglasses made
3D Sunglasses Drawing
2. Making the mould: Creating a template for the sunglasses

After the design phase is completed, the 3D model needs to be transformed into a solid model of the glasses by cutting the steel into a predetermined size and shape with the assistance of a model maker using high precision CNC tools.

Glasses Frame Mould
Glasses Frame Mould
Glasses Temple Mould
Glasses Temple Mould
3. Injection: Injecting molten plastic into the mould

The plastic particles that pass the inspection are injected into the spectacle frame mold by pressure, and the desired spectacle frame shape is obtained after cooling and molding.

Plastic Particles
Plastic Particles
Injection molded glasses frames
Injection molded glasses frames
4. Polishing and tumbling: Smoothing out any rough edges

The injection molded spectacle frames are rough, with burrs on the edges, not smooth enough. Larger burrs need to be treated in a targeted manner, manually polished to smoother, and then put into the vibration machine for overall grinding.

Polishing Glasses Frame
Polishing Glasses Frame
Trumbling Glasses Frame
Trumbling Glasses Frame
Glasses Frame After Polishing And Trumbling
Glasses Frame After Polishing And Trumbling
5. Cleaning and drying: Ensuring the sunglasses are free of any debris

The surface of the spectacle frame that has been polished and trumbled will have dust and other impurities adsorbed on it. It needs to be thoroughly cleaned to ensure that there are no sundries on the surface of the spectacle frame. After cleaning, it is also necessary to dry the glasses frame.

Cleaing Glasses Frame
Cleaing Glasses Frame
Dry Glasses Frame
Dry Glasses Frame
6. Color painting: Adding color to the sunglasses

Congratulations, at this point, you can finally make your glasses frame the color you want. The easiest way to color is to spray. Complicated colors require special techniques to complete, The common ones are water Transfer printing, heat transfer printing, these processes can make the color of the glasses more colorful and present the effect you want.

Glasses Frame Before Painting
Before painting
Glasses Frame After Painting
After painting
7. Logo printing: Adding a logo to the sunglasses

Every entrepreneur with a dream will give his sunglasses a meaningful name. As a professional sunglasses customization factory, YOOSUNGLASSES can print your exclusive brand name on the position you want, which can be on the lens. Or anywhere on the glasses frame.

LOGO Of Glasses Frame Before Printing
Before printing
LOGO Of Glasses Frame After Printing
After printing
8. Assembling: Putting all the parts together

Yes, that’s what you think, this step is to assemble the glasses frame and temples together.

Assembling glasses frame
Assembling glasses frame
9. Lens cutting: Cutting the lenses to fit the frame

The process of lens cutting involves cutting the lenses to fit the frame. It is a necessary step in creating eyeglasses. The lenses must be cut precisely to ensure they fit properly.

Lens cutting
Lens cutting
10. Testing lens: To ensure that the lenses meet the relevant quality standards

common tests for sun lenses include:
1) Transmittance
2) Prism degree
3) UV400
4) Polarization efficiency and angle
5) Drop ball test

11. Assembling lens: Placing the lenses into the frame
Assembling lens
Assembling lens
Assembly complete
Assembly complete
12. Frame adjusting: Adjusting the frame to fit the wearer's face

This is important to ensure comfort and proper function. By making the necessary adjustments, the frame will sit securely on the face and provide clear vision without slipping or causing discomfort.

Frame Adjusting
Frame adjusting
Glasses frame inspection
Glasses frame inspection
13. Packing: Put the inspected sunglasses into the package

Usually we design high-end packaging for sunglasses to increase the value of the product. The most used are paper boxes, EVA zipper boxes, glasses bags, and cleaning cloths.

Glasses packaging optional
Glasses packaging optional
Glasses in packaging
Glasses in packaging
Packed into sturdy carton
Packed into sturdy carton

In short, the production process of plastic sunglasses is complicated. As a factory with more than 15+ years of experience in the manufacture of plastic sunglasses, YOOSUNGLASSES believes that we can solve all the troubles for your plastic sunglasses business.

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