Back shell size and process technology requirements:
The back shell is made of new PP material, with a net weight of ≥1.48KG.
Seat shell dimensions and process technology requirements:
The seat shell is made of new PP material, net weight ≥1.5KG.
Aluminum alloy foot size and process technology requirements:
The armrests and writing board are tilted upward 6.5 degrees, and the writing board is a bottom-hidden writing board.
Technical requirements:
1. The seat is designed and manufactured according to the principles of ergonomics and morphological aesthetics. The curvature of the back cushion and seat cushion fully conforms to the curve of the human body. The shape of the seat back shell adopts the concept of humpback whale gill pattern in natural bionics as the morphological aesthetic design. The seat height and seat depth are reasonable, the sitting feeling is comfortable, the seat cushion can automatically return to its original shape, and the seat appearance is simple and beautiful.
2. The basic center distance of the seat is 560±5mm, the side depth of the seat bag when opened is 780±5mm, the side depth of the writing board when opened is 825±5mm, the basic seat height is 1040±5mm, and the minimum row distance is 900mm. It has passed the relevant testing basis of QB/T2602-2013 "Public Seats in Cinemas and Theaters" of the relevant furniture product quality inspection center, and the formaldehyde emission is ≤0.120mg/m³h; the anti-ignition characteristics meet the requirements of GB 17927.1-2011.
3. The mechanical properties of the seats have passed the relevant testing criteria of QB/T2602-2013 "Public Seats in Theaters" of the relevant furniture product quality inspection center, including the static load of the seat and backrest: seat 2000N, back 760N; static load of armrests: side: 900N, downward 1000N.
4. Writing board: Hidden writing board: The writing board is connected with aluminum head and support plate made of high-quality aluminum alloy material through die-casting. The writing board panel is made of ABS composite material through mold-integrated injection molding. The writing board is fixed by mechanical principle high-strength bolts, so that the connection part of the writing board becomes stronger and stronger with use, and there will be no loosening phenomenon. Dimensions: length 381.2±2mm, width 261.2±2 mm, thickness 45mm. The armrest and writing board are tilted upward by 6.5 degrees to ensure comfortable and natural writing. The writing board must have a muffler function when it is opened and recycled, and there must be no rebound force and noise. The mechanical properties have passed the relevant test basis of QB/T2602-2013 "Public Seats in Cinemas and Theaters" of the relevant furniture product quality inspection center. The static load of the writing board is 300N.
5. The fabric is made of high-grade knitted fabric and has been treated with anti-static and anti-moth treatment. It feels comfortable and will not wrinkle, break, pilling or fade after long-term use.
6. The seat foam is polyurethane cold foam high resilience sponge. The seat sponge size is: length 480±5mm, width 450±5mm, height 140±5mm. The sponge density is 50-55KG/M3. The back sponge size is: length 750±5mm, width 460±5mm, height 140±5mm, and the sponge density is 45-50KG/M3. High strength, good resilience, unique formula, make the foam antibacterial, can effectively kill bacteria such as E. coli.
7. All steel materials are made of the highest quality steel, and the welded parts are welded by robots, with high welding quality. The handrail bracket is formed by cold-rolled plate or profile stamping, and the surface is degreased, cleaned, rust-removed, cleaned, phosphated, cleaned, passivated, electrostatically sprayed with powder, cured, cooled, and then electrostatically sprayed with 30 microns of epoxy resin to ensure that the paint film will not rust after the 72-hour salt bath corrosion resistance test.
8. The seat armrests are made of high-quality imported oak solid wood, with curved shapes, no deformation or cracking. The armrest dimensions are: length 355.4±2mm, width 60±2mm, height 30±2mm.
9. The automatic return system of the seat cushion returns to its position accurately to ensure that it is parallel to the armrest, ensuring the beauty of the product. A damping gas rod slow return structure is adopted inside the seat, and rubber pads are added to the collision part of the seat bag to prevent collision and reduce noise, so that the seat bag opens without noise and there is no impact when returning.
10. The inner plate of the seat and back is made of 15±2mm thick high-quality plywood, which is formed by mold bending. The appearance is arc-shaped, beautiful and elegant, with beautiful curves. The outer shell of the seat and back is made of impact-resistant new PP material, which is molded by mold injection. The outer shell size of the seat is: length 520±5mm, width 490±5 mm, height 110±5mm, weight ≥1.5 KG, and the outer shell size of the back is: length 810±5 mm, width 470±5mm, height 100±5mm, weight ≥1.48KG, to ensure the firmness of the seat and long-term use without trouble and abnormal sound.
11. The seat foot is made of aluminum alloy mold with high temperature one-time die casting, and is mirror polished after cathode electrophoresis black, which is durable, rust-proof and corrosion-resistant. The left and right sides are equipped with side panels and covered with linen velvet, which is beautiful and collision-proof. The foot size is: length 402±5 mm, width 650±5 mm, height 60±5 mm.
12. The seat is fixed to the ground with hidden pressure-explosive screws, and the appearance is specially designed with a plastic dust cover to ensure that the chair legs are smooth and beautiful while preventing dust accumulation and facilitating cleaning.
13. It is required to provide a set of single-seat chair samples; provide a small sample of back shell accessories, with a net weight of ≥1.48KG; provide a small sample of seat shell accessories, with a net weight of ≥1.5KG; provide a set of samples of the foot accessories of the hidden writing board, with the armrest cover tilted upward by 6.5 degrees to ensure comfortable writing in a natural state. The writing board must have a muffler function when it is opened and recycled, and there must be no rebound force or noise. If the samples are not provided as required or the samples provided do not meet the requirements, no points will be awarded.
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