Introduction to the Production of Gas Lighters

1. Product Definition & Classification

A gas lighter uses liquid butane as fuel and is ignited by piezoelectric ceramics or flint friction. It is mainly divided into two types:

- Disposable plastic lighters: The mainstream product with low cost and large output. China produces around 6 billion pieces annually, accounting for over 70% of the global total.

- Refillable metal lighters: Premium products that can be refilled repeatedly, featuring durability and wind resistance.

2. Core Components (about 40 parts in total)

- Housing: Made of SAN/nylon plastic (pressure-resistant and anti-corrosive) or metals like zinc alloy and stainless steel.

- Gas reservoir: Sealed container for storing liquid butane (approximately 3mL).

- Valve assembly: Controls gas output with micro-liter level precision.

- Ignition system:

- Piezoelectric type: Generates high-voltage electric sparks when pressed (the most widely used).

- Flint wheel type: Creates flame through friction (traditional design).

- Wind shield & flame regulator: Stabilizes flame and adjusts flame height.

3. Production Process (12 working procedures on automated production lines)

1. Injection molding: Plastic pellets are heated to 300° C and injected into molds under high pressure to form housings in seconds. Housings are then sealed by ultrasonic welding at 50-60° C for pressure resistance.

2. Parts fabrication: Metal parts are stamped and polished. Valves and piezoelectric components are precision-processed by external manufacturers with a tolerance of ± 0.02mm.

3. Automatic assembly (key procedure):

- Parts are sorted automatically by vibratory feeders.

- Valves, igniters, springs and flints are installed sequentially.

- Assembly tolerance is controlled within ± 0.05mm to ensure reliable ignition.

4. Butane filling (operated in explosion-proof workshops):

- The system injects precisely 3mL of liquid butane with real-time pressure monitoring.

- Sealing is completed immediately after filling to prevent gas leakage.

5. Testing (15 inspection standards):

- Airtightness test: Maintain pressure at 0.8MPa for 30 minutes, with pressure drop no more than 0.01MPa.

- Ignition test: Ignition success rate reaches over 99.5% with uniform flame height.

- Safety test: Drop resistance, explosion proofing and high & low temperature resistance (-10° C to +50° C).

6. Printing & packaging: Logos and patterns are printed on products, then finished goods are boxed and delivered.

4. Production Capacity & Safety Requirements

- Efficiency: A single production line makes 120-150 lighters per minute. Large manufacturers can produce 5 million pieces per day.

- Safety: The whole workshop is equipped with explosion-proof and anti-static facilities. Since butane is flammable and explosive, relevant rules must be followed for warehousing and transportation.

5. Market & Development Trends

- Industry status: China is the world's largest producer, with major production bases in Wenzhou, Ningbo and Guizhou. Products are exported to more than 80 countries and regions.

- Development trends: Upgrading to high-end designs (windproof, jet flame, refillable), adoption of eco-friendly recyclable materials, and personalized customization such as logo printing.

6. Key English Terms

- gas lighter

- butane gas

- piezo ignition

- flint wheel

- airtight test