Years of industry experience
Wholesale Acetate Injection Optical Frame | Transparent Color Metal Spring Hinge




A transparent acetate injection front at 48-22-150 with a metal spring hinge, sized for a narrower face than the standard men's mould.
Overview
Acetate injection sits between sheet acetate and plain plastic: the material is acetate, but the front is moulded from pellet rather than cut from sheet, which lowers cost and gives tighter control over wall thickness on complex shapes. The result is a frame with acetate depth of colour and a metal spring hinge at a price point that suits volume retail. The longer temple and narrower bridge suit a face that standard men's frames sit too wide on, which is a gap many ranges leave open.
Moulded fronts are dimensionally consistent, which matters when a buyer orders the same model across seasons and expects the lens to drop in without reworking. Sizes are fixed by the mould, and the size printed on the temple matches the drawing within tolerance. A transparent front shows the hinge block through the rim, so the internal plating and the rivet finish are inspected as closely as the outer surface. Transparent and two-tone effects come from controlling melt and mould temperature rather than from painting, so the colour survives daily cleaning and does not wear at the edges.
Key Features
Acetate Injection Front
Pellet acetate is dried and injected into a polished mould, which produces a front with the warm depth of acetate and the repeatability of plastic. Wall thickness stays uniform around the rim, so the frame keeps its shape and the lens seat holds tolerance across a long run.
Hinge and Temple Choice
A metal spring hinge allows the temple to flex outward under load, which protects the hinge seat when a frame is pushed onto a face one-handed. The hinge block is riveted into the front and tested for return before the temple is finally tightened.
Transparent and Two-Tone Colour
Transparent finishes show every internal defect, so the mould has to be clean and the melt consistent. Two-tone and gradient effects are produced by controlled injection rather than by painting, which keeps the colour stable through cleaning and avoids a visible wear line.
Logo and Retail Marking
Logo is applied by hot stamp, laser or silkscreen after moulding, or moulded in relief for a tactile mark. The inner temple carries model, size and CE text, and the colour code is recorded so a reorder matches the original shipment.
Product Showcase
Views show the OAI435367 sample and, where noted, a sister model from the same range, so the hinge position and temple profile can be compared before a sample is ordered.
Specifications
| Model No. | OAI435367 |
|---|---|
| Category | Custom Men Optical Frame |
| Frame Material | Acetate injection |
| Lens | Demo lens fitted at production |
| Hinge | Metal spring hinge, riveted |
| FOB price | USD 2.76 per piece, indicative |
| Size | 48-22-150 |
| Colour | 3 colours, matched to a swatch |
| Customization | Logo, colour, temple, lens and packaging; artwork approved from a proof |
| MOQ | 600 pcs per model |
| Certification | CE and FDA |
| Lead Time | 5-20 days after order confirmation |
| Payment Terms | T/T, 30 percent deposit and 70 percent balance before shipment |
| Port | Shanghai / Ningbo |
The values above come from the current specification sheet for this model. A size marked as fixed by the mould cannot be changed without new tooling, while colour, logo, lens and packing remain adjustable within the stated minimum.
OEM & ODM Customization
This wholesale acetate injection front is produced in a transparent color that shows the hinge block through the rim, which is why the internal finish is checked as closely as the outside. The acetate injection optical process holds the 48-22-150 geometry, the metal spring hinge is riveted and cycled, and the spring hinge tension is set before packing.
Customisation on an injection frame is mostly a question of what the mould already allows. Colour and finish can change freely, logo can change freely, and packaging can change freely; geometry changes require a new insert or a new mould. We quote those two paths separately so a buyer can see the cost of a new shape against the cost of a new colour before deciding.
- Finish: solid, transparent, translucent and two-tone finishes are quoted from the same mould, with per-finish minimums confirmed at quotation stage.
- Colour: matched to a physical swatch or Pantone reference; transparent tones are approved on a moulded chip rather than a printed card.
- Hinge: spring and standard hinge options are available, and the hinge grade is stated on the specification sheet.
- Logo: hot stamp, laser and silkscreen are priced per position, with a proof issued before production.
- Packaging: sleeve, pouch and case options are quoted per unit, including barcode labels applied at packing.
- Documentation: CE and FDA files follow the model number, and the lens specification is listed on the declaration.
Buyers who want the wider picture can review the OEM and ODM optical frames programme, which explains how tooling, sampling and documentation are handled across models.
Manufacturing & Quality Control
Production is organised around four checkpoints, and a frame cannot move to the next stage until the previous one is signed off. The process below is the same for a sample order and for a repeat run.
1. Pellet and Masterbatch Control
Acetate pellet is checked for moisture content before drying, since residual water causes silver streaks in transparent frames. Masterbatch is weighed per batch so the colour stays inside the approved tolerance across the run.
2. Moulding and Annealing
Frames are injected, cooled on fixture and checked for sink marks, flow lines and warp. Transparent parts are inspected against a backlight, where internal stress and contamination are visible.
3. Hinge Assembly and Fit
The hinge block is riveted, the temple is fitted, and the frame is opened and closed through a cycle test. Bridge width, temple length and frame level are measured before the frame moves to packing.
4. Packing and Shipment Check
Every frame is wiped and sleeved, then counted against the order. A carton sample is checked for logo position, colour match and hinge feel, and the packing list is verified before release.
Inspection records are kept against the model number, so a question raised months after shipment can be traced back to the batch, the operator and the material lot. The full procedure is described under quality control.
Applications
- Optical chains needing an acetate look at a plastic price
- Distributors supplying transparent and crystal frame trends
- Online brands shipping lightweight frames in volume
- Department store optical counters with seasonal colour changes
- Duty-free and travel retail programmes
- Buyers testing a new shape through a low tooling entry
The injection range is listed with custom men optical frame and pairs with custom optical frame styles when a buyer needs a full family across materials.
FAQ
What is the difference between acetate injection and sheet acetate?
Sheet acetate is cut and reamed from a block, which allows deeper colour and hand adjustment. Injection acetate is moulded from pellet, which is more repeatable and less expensive at volume but fixes the geometry in the mould. Both are acetate; the choice is a cost and tooling decision.
Can I order a mixed colour run?
Yes, when each colour meets its own minimum. MOQ for this model is 600 pieces, and the colour split is confirmed at quotation stage so the per-colour minimum is clear before the order is placed.
How is a transparent colour approved?
On a moulded chip, not on a printed card. Transparent acetate shifts with wall thickness and lighting, so approval on the actual material is the only reliable method.
Start Your Custom Order
Send the model, the finish you want and the quantity, and the reply covers tooling status, FOB price, MOQ per colour and the sample timing for your programme.
Prefer to compare shapes first? The custom men optical frame page lists the rest of the range.
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