From raw materials to finished products: Exploring the 7 core technologies in the entire process of tin box production

This article deeply analyzes the 7 core technologies of the entire process of tin box production, covering key links such as raw material screening, precision mold design, and non-welding process, and reveals how tin box manufacturers achieve high-quality production of customized tin boxes through technological innovation.

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I. Raw material screening: core requirements for food-grade tinplate

The core raw material of tin boxes is food-grade tinplate (tin-plated steel plate), which must meet the following standards:

- Safety certification: Comply with international food contact material standards such as FDA and LFGB to eliminate the risk of heavy metal precipitation.

- Thickness control: Select a thickness of 0.18mm to 0.25mm according to the size of the box to ensure a balance between strength and lightweight.

- Tin plating uniformity: The surface tin plating layer must be fully covered and the anti-rust performance must meet the standards.

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II. Precision mold design: the basis of customized production

The mold is the core tool for tin box molding, which directly affects the precision and appearance of the finished product:

- 3D modeling technology: build a three-dimensional model according to the customer's drawings, and support the customization of special-shaped boxes (circular, heart-shaped, polygonal).

- Tolerance control: The mold accuracy must reach ±0.02mm to ensure that the box body and the lid fit tightly.

- Quick mold change system: suitable for small batch customized tin box orders to shorten delivery time.

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III. Stamping molding: high-precision one-piece molding process

Adopting fully automatic punching equipment, the box body is formed through three steps of "blank-stretch-trimming":

- Blanking: Cut the tinplate into a blank of a preset shape.

- Stretching: Stretch it into the prototype of the box body through a hydraulic press, and the seamless design avoids leakage.

- Trimming: Remove burrs to ensure smooth edges without the risk of cutting hands.

This process is welded throughout the process to ensure the integrity of the box body.

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IV. Surface treatment: Enhance beauty and functionality

The surface of the tin box can be treated with a variety of processes:

- Chrome plating/matte: Enhance the metal texture, suitable for high-end gift packaging.

- Spraying process: Use environmentally friendly paint to achieve matte, glossy or textured effects.

- Printing technology: Add brand logos and patterns through UV printing or silk screen printing, and support Pantone color matching.

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V. Edge locking technology: Ensure sealing and durability

Replace traditional welding with mechanical edge locking technology:

- Curling process: The edge of the box body and the lid is double curled to form a physical buckle structure.

- Rubber sealing ring: Some customized tin boxes can be equipped with silicone rings to improve sealing and moisture-proof performance.

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VI. Assembly and accessories integration

Integrate diversified accessories according to customer needs:

- Hinge connection: The metal hinge realizes 180° opening and closing of the box cover, and there is no breakage after 10,000 tests.

- Magnetic buckle design: Built-in neodymium magnet, silent opening and closing and stable adsorption force.

- Customized lining: EVA sponge, silk or flocking lining to protect the contents.

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VII. Full-process quality inspection and packaging

Tin boxes must pass strict inspections before leaving the factory:

- Air tightness test: vacuum test the sealing performance of the box body.

- Drop test: simulate the transportation environment, and fall from a height of 1.2 meters without deformation.

- Surface quality inspection: AI visual system detects scratches, color difference and other defects, and the defective rate is less than 0.3%.

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Why choose a professional tin box manufacturer?

1. Flexible customization: support personalized design of size, shape, and surface process.

2. Production capacity guarantee: automated production line achieves a daily output of 50,000+ standard tin boxes.

3. Environmental certification: provide ISO, SEDEX and other reports to meet export needs.

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Conclusion

From raw materials to finished products, every link in the production of tin boxes integrates material science and precision manufacturing technology. Professional tin box manufacturer Through the innovation of 7 core processes, we provide cost-effective customized solutions for food, jewelry, electronics and other industries.

If you want to know more about the tin box customization process or get samples, please contact a senior production service provider for one-stop packaging support.