Liaoning Office Chair Production

Liaoning office chair production relies on local industrial advantages, forming a systematic production process that covers design, material processing, assembly, and strict quality control, with an emphasis on ergonomic design.

I. Production Process and Core Links

Liaoning office chair production centers on a systematic process, encompassing four key links:

1. Frame Production:

   • Solid Wood Frames: High-quality wood is selected and undergoes drying treatment (controlling moisture content to 8%-12%), cutting, and mortise-and-tenon jointing to ensure load-bearing stability and durability. The mortise-and-tenon structure reduces screw usage through precise interlocking, minimizing the risk of loosening.
   • Metal Frames: Steel pipes or aluminum alloys are used, undergoing cutting, welding, and grinding before surface spraying. Rust prevention is crucial, typically achieved through electrostatic spraying technology, which forms a uniform coating on the metal surface, effectively isolating it from humid environments.

2. Cushion Processing:
   High-density foam (density ≥ 45kg/m³) or polyurethane foam are the mainstream choices, with their density and resilience directly affecting seating comfort. Factories conduct pressure tests to screen materials, ensuring cushions do not collapse easily after long-term use and that rebound time is controlled within 3-5 seconds to provide moderate support.

3. Fabric Cutting and Sewing:
   Fabrics, leathers, or tech fabrics undergo cutting, sewing, and covering processes. Fabric selection emphasizes abrasion resistance (e.g., fabrics must withstand over 50,000 friction tests) and breathability, while leathers must pass tear strength tests (≥ 50N). The sewing process employs double-thread lockstitch techniques to prevent unraveling and enhance aesthetics.

4. Assembly and Inspection:
   Components are assembled via automated production lines, with a focus on testing the robustness of connections. For example, the connection between the gas lift and the seat must withstand a static pressure test of over 200kg to ensure safety.

II. Quality Control System

Liaoning factories have established multi-level quality inspection nodes:

• Frame Inspection: After assembly, static load tests are conducted, simulating human sitting postures by applying 100kg of pressure to the chair legs and connections for 24 hours without deformation to pass inspection.
• Cushion Inspection: A rebound meter is used to measure foam uniformity, with deviations controlled within ±5%.
• Finished Product Inspection: Before leaving the factory, products undergo appearance checks (no flaws or loose threads), dimensional verification (error ≤ 2mm), and functional tests (e.g., reclining mechanisms must operate smoothly for over 50,000 cycles). Some factories incorporate environmental standards, testing VOC content in adhesives and foams to ensure compliance with national E1-level environmental requirements.

III. Ergonomic Design Features

Liaoning office chairs focus on meeting office scenario needs:

• Gas Lift Adjustment: Supports seat height adjustment (range 40-50cm) to accommodate users of different heights.
• Armrest Adjustment: Provides multi-dimensional adjustments (up/down, forward/backward, left/right) to relieve shoulder and neck pressure.
• Lumbar Support Components: Adopt movable or adjustable designs to fit the lumbar curve, reducing fatigue from prolonged sitting.