How Are Sunglasses Made?
Sunglasses manufacturing is not a single machine process. A finished pair of acetate sunglasses goes through design review, material preparation, frame cutting, CNC carving, hinge work, polishing, lens fitting, adjustment, inspection and packaging. Each step affects the final fit, surface finish, durability and brand presentation.
What Happens Before Sunglasses Production Starts
A reliable sunglasses manufacturing process begins before the first piece of acetate is cut. For OEM and private label eyewear projects, the early review stage decides whether the product can be produced accurately, consistently and within a realistic cost range.
At this stage, the factory reviews the frame shape, lens curve, hinge structure, temple length, logo position, material choice and packaging requirements. If the design is not checked carefully, small problems can become expensive once production starts.
Key points checked before production
- Frame shape, size and wearing balance
- Lens curve, groove depth and lens fitting tolerance
- Acetate sheet thickness, color and pattern direction
- Hinge type, screw position and temple opening angle
- Logo method: printing, laser engraving or metal logo
- Packaging requirements and final shipment standard
Design Review and Technical Drawing
Before manufacturing sunglasses, the design must be translated into a clear production reference. A sketch or reference sample is useful, but the factory also needs accurate measurements and construction details. This is where technical drawings become important.
The drawing helps confirm the lens width, bridge size, temple length, front curve, hinge position, end piece shape and lens groove. For a brand owner, this step reduces misunderstanding. For the factory, it provides a stable reference for sample making and bulk production.
If you are still developing the product shape, see our guide on designing sunglasses before sending a project for quotation.
Raw Material Selection and Inspection
In OEM sunglasses manufacturing, raw material selection directly affects the finished eyewear. For acetate frames, the sheet must match the approved sample in thickness, color, pattern and surface quality. For metal or titanium sunglasses, the factory checks components such as hinges, screws, nose pads, bridge parts and temples before production.
Material preparation also includes lenses, logo parts and packaging accessories. These items are checked before entering the production line, because a small difference in material thickness or component tolerance may affect frame stability, polishing quality, lens fitting and final appearance.
Acetate Sunglasses Manufacturing Process
Acetate sunglasses are widely used by eyewear brands because the material offers rich colors, a polished finish and good shaping possibilities. The process below explains how acetate sunglasses are usually made in an OEM eyewear factory.
Drying and Sawing Acetate Sheets
Acetate sheets are dried before cutting to help stabilize the material. Moisture and internal stress can affect the frame during later cutting and polishing, so preparation matters. After drying, the sheets are sawed into suitable blocks or plates for frame front and temple production.
Frame Carving and Frame Curving
The acetate pieces are carved into the required frame shape by machine. The frame front needs accurate lens openings, bridge shape and outer profile. After carving, the frame may be curved to match the intended wearing angle and facial fit.
This step decides the basic structure of the sunglasses. If the carving is inaccurate, later polishing and lens fitting cannot fully correct the problem.
Nose Pad Welding, Drilling and Hinge Work
Nose pads are formed or welded according to the frame design. The drilling process creates accurate holes for hinges, screws and other connection points. The hinge position must be consistent on both sides, otherwise the temples may not open evenly.
For acetate sunglasses, hinge work is one of the details that affects long-term durability. A clean hinge position gives the frame a better opening feel and reduces adjustment problems.
Temple Cutting, Screw Assembly and Temple Curving
The temples are cut to the required length and shape. After that, screws and hinges are assembled so the frame can open and close correctly. The temples are then curved to improve fit behind the ears.
Temple curving should not be treated as a minor step. The curve affects comfort, stability and how the sunglasses sit on the face. For brand products, this detail is often what separates a standard frame from a better wearing experience.
Filing, Groove Milling and Polishing
Filing removes rough edges and refines small areas around the end piece and temple. Groove milling creates the channel that holds the lenses in place. The groove must be accurate enough to keep the lens secure without causing unnecessary stress.
Polishing is one of the most visible parts of acetate sunglasses manufacturing. It improves the surface gloss and hand feel. A good polish should look clean around the front, bridge, temples and edges, not only on the flat surfaces.
Lens Cutting, Logo Printing and Lens Installation
Lenses are cut according to the frame shape and groove structure. The lens edge needs to match the frame accurately so the final assembly is stable. Depending on the order, lenses may include UV protection, tint color, polarization or other treatments.
Logo customization can be applied on the temple, lens or packaging. Common methods include printing, laser engraving and metal logo application. The best method depends on the material, logo size, order quantity and target product positioning.
Frame Adjustment, Quality Inspection and Packaging
After assembly, each pair is adjusted for alignment, temple opening, lens fit and wearing balance. The inspection team checks surface finish, hinge function, screw tightness, lens condition, logo position and overall appearance.
Qualified sunglasses are cleaned, packed and prepared for shipment according to the client’s packaging requirement. For OEM orders, this may include custom cases, microfiber cloths, hang tags, instruction cards and outer cartons.
Final Production Review
Before shipment, the order should be reviewed against the approved sample and production specification. This includes frame color, lens color, logo placement, packaging details and quantity. For eyewear brands, this final check helps keep bulk goods consistent with the approved sample.
A disciplined production review reduces rework, avoids mixed specifications and protects the client’s brand image when the goods reach the market.
Quality Control During Sunglasses Manufacturing
Quality control is not only a final inspection. In eyewear manufacturing, quality should be checked at several points: material inspection, frame carving, hinge assembly, polishing, lens fitting, logo application, adjustment and final packaging.
Custom Options for OEM Sunglasses Orders
Different brands need different production details. Some projects focus on frame shape and material quality, while others care more about logo placement, lens color or packaging. A clear specification helps the factory quote accurately and produce consistently.
Baooda supports custom sunglasses development for eyewear brands, distributors and private label businesses. You can send a sketch, technical drawing, reference sample or product idea for production review.
Common customization items
- Frame material: acetate, metal, titanium, TR90 or combination frames
- Lens options: tinted, gradient, polarized or UV protection lenses
- Logo methods: temple printing, lens printing, laser engraving or metal logo
- Hardware: hinges, screws, nose pads and decorative parts
- Packaging: case, pouch, microfiber cloth, card, box and carton
- Sample development before bulk production
Custom Sunglasses Production Options
After understanding the sunglasses manufacturing process, the next step is to match your project with the right production service. Baooda supports both custom sunglasses manufacturing and private label sunglasses production depending on your brand requirement.
Custom Sunglasses Manufacturer
For brands that need custom frame shapes, material selection, lens options, logo application, sample development and bulk production, Baooda can review the project from design feasibility to manufacturing.
Private Label Sunglasses Manufacturer
For businesses that want to sell sunglasses under their own brand, Baooda supports logo placement, branded packaging, sample approval and repeatable private label production standards.
Manufacturing FAQ
How long does custom sunglasses manufacturing take?
The timeline depends on the frame structure, material availability, sampling revisions and order quantity. For most OEM sunglasses projects, sampling should be completed and approved before bulk production starts. A practical production plan is usually confirmed after reviewing the design and material requirements.
Can you produce sunglasses from our own design?
Yes. You can send sketches, technical drawings, reference samples or design ideas. The factory will review the structure, material choice, logo method and production feasibility before making samples.
What materials can be used for custom sunglasses?
Common materials include acetate, stainless steel, titanium, TR90 and combination structures. The best option depends on your target price, brand positioning, frame shape and expected durability.
Can you add our logo to the sunglasses?
Yes. Logo options include temple printing, lens printing, laser engraving, metal logo parts and packaging branding. The suitable method depends on the logo design, material and order quantity.
What information should we send for a quotation?
Please send the frame design or reference image, material preference, lens requirement, logo position, packaging requirement, target quantity and delivery market. More complete information helps the factory provide a more accurate quotation.
Send Your Sunglasses Design for Production Review
If you are developing a new sunglasses collection, send us your sketch, reference sample, material requirement and estimated quantity. Our team will review the production feasibility and suggest a suitable manufacturing approach.