TR90 Chic Square Metal Accessories Optical Frames

Hongtu Eyewear manufactures the TR90 Chic Square Metal Accessories Optical Frames in Taizhou, China, using integrated injection molding to incorporate metal components into the TR90 frame structure. The result brings together a molded polymer front, a dual-axis hinge configuration, and a textured metal accent in one coordinated design. The model is available for OEM/ODM development, including selected frame colors, metal finishes, logo application, lenses, and packaging.

What are TR90 Chic Square Metal Accessories Optical Frames?

The TR90 Chic Square Metal Accessories Optical Frames are square optical frames designed around a metal-reinforced hinge and side decoration. TR90 forms the main frame body, while the 3+2 precision hinge provides the temple connection and the knurled metal accent adds a defined detail to the temple area.

Rather than making the entire frame metallic, this model keeps the main structure in TR90 and uses metal selectively where mechanical connection and visual detailing are important. This creates a mixed-material appearance while maintaining the clean geometry of the square front.

Product Specifications

Product Features

1.  3+2 Precision Metal Hinge

The frame uses a 3+2 precision metal hinge with dual-axis fixation. Compared with a simpler single-axis hinge layout, the additional fixing structure provides a more substantial connection between the temple and front frame and gives the hinge assembly a defined mechanical configuration.

The hinge is designed for repeated opening and closing in normal everyday use. Its performance still depends on correct assembly, screw tension, alignment, and proper handling during use.

2.  Integrated Metal-TR90 Injection Molding

The metal hinge components are positioned in the mold before TR90 injection. The polymer then forms around the pre-positioned metal components during molding, creating an integrated connection between the two materials.

This method reduces the need for a visibly separate attachment between the metal and TR90 sections and helps keep the hinge area clean and consistent in appearance.

3.  Knurled Metal Temple Accent

A knurled metal detail is incorporated into the temple area, adding a textured surface that catches light differently from the smooth TR90 frame. The detail gives the side profile more visual interest without extending across the entire front.

4.  Transparent Chic Square Front

The transparent frame treatment keeps the square silhouette visually light while allowing the molded structure to remain clearly visible. The compact front avoids an oversized appearance and provides a clean base for the more detailed temple hardware.

5.  Compact 52□15-135 mm Format

The 52 mm lens width, 15 mm bridge, and 135 mm temple length create a relatively compact overall profile. The dimensions work with the square front to provide a neat appearance rather than a large-volume frame.

Why the Hinge Structure Matters

The hinge is one of the moving interfaces in an optical frame, so its geometry and alignment directly affect how the temples open, close, and sit relative to the front. This model uses a 3+2 configuration rather than treating the hinge as a basic single fixing point.

The dual-axis fixation gives the hinge assembly a more defined structure, while the integrated molding process connects the metal section to the surrounding TR90 during frame production. These two features work together: one defines the hinge mechanism, and the other defines how the hinge is incorporated into the frame body.

Integrated Molding vs. Separate Hardware Attachment

In a conventional assembly approach, a metal hinge can be installed into the completed plastic frame as a separate operation. This creates an additional interface between the two components that must be correctly positioned and secured.

Here, the metal component is placed in the mold before the TR90 is injected. Once molding is complete, the metal and polymer form one integrated frame section. The process can help reduce visible gaps around the component and provides a consistent base for the hinge assembly.

The advantage is primarily related to the construction method and assembly consistency rather than a universal claim that integrated molding is stronger than every conventional hinge system.

TR90 Construction and Frame Balance

Although the design includes metal hinge and decorative components, TR90 remains the main frame material. This keeps the product within the lightweight molded-frame category while allowing selected metal parts to provide structure and visual contrast.

The transparent finish also changes how the frame is perceived. Instead of making the hardware compete with a heavy opaque front, the transparent TR90 creates a clearer separation between the polymer body and the metallic details.

Temple Detail

The knurled metal accent adds texture to the side of the frame without turning the design into a heavily decorated fashion piece. Its position means the front can remain relatively clean while the side profile provides a more distinctive product signature.

This approach is useful for optical designs where the frame needs to look appropriate in professional environments while still offering enough detail to distinguish it from a basic transparent square frame.

Optical Fit and Everyday Use

The 52□15-135 mm dimensions provide a relatively compact optical format. The square front offers a defined outline around the eyes, while the 15 mm bridge and 135 mm temple length should be considered together when evaluating fit.

The model is suitable for everyday prescription eyewear, office use, commuting, and casual wear. Actual fit depends on facial width, bridge position, pupillary distance, temple reach, and the final lens configuration.

OEM/ODM Customization

The frame color is customizable, and the design can be developed with different transparent treatments, metal finishes, logo applications, lens configurations, and packaging options.

For customized projects, physical samples or technical drawings can be used as development references. The hinge configuration, frame color, temple detail, branding, and packaging can then be confirmed before production.

Why Choose Hongtu Eyewear?

Hongtu Eyewear is an optical frame manufacturer based in Taizhou, China, with experience in TR90 and other injection-molded eyewear. Its production capabilities also include CP-related processes, insert injection molding, surface treatment, and customized frame development.

For the WZ250902 structure, the relevant experience lies in combining molded TR90 construction with metal components and detailed finishing. OEM/ODM development can be based on physical samples or technical drawings, with customization extending to frame appearance, colors, branding, lenses, and packaging.

Development for Metal-Trimmed TR90 Frames

The combination of transparent TR90 and metal components requires attention to component positioning as well as surface appearance. This model can be developed with different color and metal-finish directions while retaining the basic square frame architecture.

Production Support from Sample to Finished Frame

Sample-based development can be used to confirm the hinge structure, frame dimensions, color treatment, metal detailing, and overall appearance before formal production. This provides a defined reference for subsequent manufacturing.

Use & Care Notes

Open and close the TR90 Chic Square Metal Accessories Optical Frames through their normal hinge movement and avoid forcing the frame beyond its intended range. Do not repeatedly twist the temple or apply concentrated force directly to the metal hinge area.

For cleaning, use a soft eyewear cloth and suitable cleaning materials. Avoid abrasive surfaces that could affect the transparent TR90 finish or the surface of the knurled metal detail.

Q&A

Q: What does the 3+2 hinge configuration mean?

A: This model uses a 3+2 precision metal hinge with dual-axis fixation. The designation refers to the hinge's specific fixing structure rather than a general frame size or lens measurement.

Q: Is the hinge installed after the TR90 frame is molded?

A: The listed manufacturing process is integrated injection molding. The metal components are positioned in the mold before TR90 is injected, so the hinge area is formed as part of the molding process.

Q: What is the function of the knurled metal detail?

A: It is primarily a decorative and textural element on the temple. The knurled surface provides a different visual texture from the smooth TR90 body.

Q: Is this frame suitable for prescription lenses?

A: Yes. Demo lenses and prescription lenses are available. The final lens selection should be evaluated according to the prescription and fitting requirements.

Q: Can the transparent frame color be customized?

A: Yes. The frame color is listed as customizable, allowing different transparent color directions to be developed for OEM/ODM projects.

Q: What is the size of this model?

A: The specification is 52□15-135 mm, representing a 52 mm lens width, 15 mm bridge width, and 135 mm temple length.