Three-hole High Back Hollow Blow Molding Seat
The three-hole high back hollow blow molding seat are manufactured using one-piece molding technology. What advantages do they offer over modular chairs?
Seamless Design: The backrest and seat are integrated, eliminating the need for post-drilling for the three holes, thus preventing joints in modular chairs from loosening due to vibration and pressure.
Impact Resistance: The overall structural density is uniform. When a member of the audience stands up and bumps into the backrest, the one-piece structure cushions the impact. In modular chairs, the backrest tilts.
Smooth Surface: Precisely controlled surface flatness ensures the chairs are free of roughness, causing no irritation to the touch and preventing clothing from catching, reducing user risk.
No Dead Spots: Seams and screws often harbor dust, leaving residue even after cleaning. The one-piece design can be cleaned with a damp cloth or a hose, shortening cleaning time and ensuring a cleaner and tidier appearance.
Cost Advantage: While modular chairs require multiple production steps, where the backrest is manufactured first, followed by the seat, and then assembled, the three-hole high back hollow blow molding seat utilize a one-piece molding process, resulting in lower production costs.

What are the main applications for three-hole high back hollow blow molding seats? Below are a few common applications. If you're using them in this scenario, high-back seats are a good choice.
Stadiums: For outdoor fixed or retractable stands, high backs are recommended for frequent use and long-term use.
Auditoriums: For stepped environments, high backs don't obstruct the view from the back row, creating a more upscale and elegant feel.
Theaters: For temporary venues, electric retractable stands can be used to meet our needs. The seats above can be three-hole high back hollow blow molding seats, which are suitable for a variety of environments and have a long service life.
When purchasing fixed seats, many users choose three-hole high back hollow blow molding seats because they are more suitable for fixed settings. Fixed seats are often used for long periods of time or frequent use, so they are fixed to avoid frequent movement. The high back provides comfort and distributes pressure on the upper body. Fixed seats typically see frequent use after installation. The one-piece molding process creates seamless joints, eliminating the risk of loose screws. The HDPE material is also scratch-resistant, ensuring long-lasting use. The three-hole design facilitates installation and use, allowing for secure attachment to the floor or stand brackets. The ventilation holes facilitate ventilation. Whether indoors or outdoors, the three-hole high back hollow blow molding seat is sure to satisfy.




Polyethylene (PE) is a thermoplastic resin material made by polymerizing ethylene. It is odorless and non-toxic, and has a waxy texture. It exhibits good low-temperature resistance and good chemical stability, resisting most acids and alkalis.
Our company can customize seats in various colors such as red, blue, green, yellow, and orange. During the production process, ultraviolet stabilizers are added to the polyethylene to ensure the seats have flame-retardant, anti-oxidation, UV-resistant, and anti-aging properties. This makes them suitable for stadiums, basketball courts, swimming pools, and other similar venues.
| Three-hole high back hollow blow molding seat | ||
| Seat width: 440mm | Seat depth: 540mm | Seat height: 370mm |
| Weight: 2.3kg | Material: High-density polyethylene | |
| Features: Impact modifiers and reinforcing fibers are added during the manufacturing process to improve tensile and bending resistance, ensuring no deformation during heavy-load testing. The hollow structure, like an arch bridge, distributes pressure throughout the seat, preventing sudden breakage. High-temperature tempering during production eliminates internal stress, allowing for recovery even in the event of minor deformation. | ||


Buyers from Russia, Kyrgyzstan and Kazakhstan are very interested in our seats.Come to the factory to sign a contract and formulate a plan.
Three-hole high back hollow blow molding seat are a very common type of chair. They are secured with three expansion bolts during installation and offer unique advantages in outdoor settings, schools, sports stadium stands, and other similar environments. To facilitate user convenience, our company maintains a large inventory of hollow blow-molded chairs, shortening the procurement cycle. During storage, we also consider the chair's performance characteristics and implement proper storage methods.
The warehouse temperature needs to be maintained between 15-30℃ to prevent material aging or deformation. Chairs should be stacked flat, avoiding excessive stacking that could lead to deformation. Chairs and bolt-related accessories are stored separately for convenient performance and assembly testing during procurement.


Our company provides free design drawings and solution development services for three-hole high back hollow blow molding seats. A complete seat system includes screws, fasteners, and the seat body. Users do not need to contact individual suppliers. From customized drawings and solution optimization to the delivery of the complete seat system, our company is responsible for the entire process, reducing communication costs and avoiding coordination risks.
When providing free drawings, we integrate details such as screw hole locations and concealed fastener designs directly into the solution. The integration of the seat and core material components eliminates the hassle of users calculating component quantities or selecting models separately, greatly improving satisfaction from product selection to solution implementation. Our company provides not just a seat, but a complete solution including design, seat, and screws, emphasizing production in the same factory to ensure correct installation.
الوسم : three-hole high back hollow blow molding seat, China three-hole high back hollow blow molding seat manufacturers, suppliers, factory
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