Chair Mould

Stacking Chair Mould

Professional stacking chair mould designed for event and hospitality industries. Optimized stacking angle allows up to 15 chairs to be stacked safely. Durable design suitable for frequent use and transport.

Cycle Time

50-60 seconds

Mould Life

500,000+ shots

Material

PP / ABS

Key Features

Optimized stacking angle
Reinforced stress points
Metal insert leg option
Linking mechanism available
Commercial grade durability

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Technical Specifications

Product Size	450 x 480 x 820 mm
Stacking Height	15 chairs
Mould Size	850 x 780 x 950 mm
Steel	718H
Hardness	30-34 HRC
Runner System	Hot Runner
Ejection	Hydraulic

Applications

Conference Halls

Hotels

Event Venues

Auditoriums

Enabling World-Class Events

From Olympic ceremonies to corporate conferences, stacking chairs are the backbone of event seating. Our moulds enable manufacturers to produce chairs that meet the demanding requirements of professional event organizers.

International Convention Center Project

A major Middle Eastern convention center opening required 50,000 chairs that:

Could be reconfigured for events from 500 to 25,000 attendees
Met international fire safety standards
Provided all-day comfort for conference attendees

Our solution delivered chairs that transformed the center's flexibility.

Results:

15-minute room reconfiguration for 5,000 seats
Zero chair failures in 2 years of intensive use
40% storage space reduction vs. previous chair system

The Mathematics of Event Seating

Event operators think in terms of efficiency metrics:

Metric	Industry Standard	Our Design
Stack height	10-12 chairs	15 chairs
Setup time (1000 chairs)	45 minutes	30 minutes
Storage footprint	1m² per 8 chairs	1m² per 12 chairs
Linking capability	Manual clips	Integrated mechanism

Market Applications

Our stacking chairs serve diverse event segments:

Conference centers: 8+ hour sitting comfort required
Hotels and banquet halls: Elegant appearance demanded
Stadiums and arenas: Maximum durability essential
Educational institutions: Cost-effectiveness crucial

Optimizing for Maximum Stack Height

Stack Engineering Principles

Achieving 15-chair stacking requires precision engineering:

Stack Geometry Optimization

Parameter	Standard Design	Our Design
Nest depth	70mm	55mm
Stack height (15 chairs)	1050mm	825mm
Stack stability angle	3°	5° (more stable)
Chair-to-chair clearance	10mm	5mm (tighter stack)

Structural Reinforcement Strategy

High stacking creates significant stress on bottom chairs:

Bottom chair supports 14 chairs above
Total load: approximately 35kg (assuming 2.5kg per chair)
Safety factor: 2.0x (designed for 70kg stack load)

Reinforcement Locations

Rear leg junction: Primary load path
Seat-back junction: Prevents flex under stack weight
Front leg base: Impact resistance for setup/teardown

Linking Mechanism Design

Professional event chairs often require linking:

Linking Options

Type	Cost	Speed	Stability
External clips	Low	Slow	Good
Integrated hooks	Medium	Fast	Excellent
Ganging bars	High	Medium	Best

Our design includes integrated linking hooks at no additional mould cost.

Commercial-Grade Durability Testing

Event chairs face harsh conditions:

Drop test: 50kg from 500mm (simulates rough handling)
Fatigue test: 100,000 sit cycles at 100kg
Stack test: 20 chairs stacked for 30 days
UV test: 1000 hours accelerated exposure

All tests performed to BIFMA standards.

Metal Insert Options

For highest durability, metal leg inserts are available:

Steel tube inserts (4mm wall)
Aluminum leg caps (anti-scratch)
Metal ganging bar receivers

Why Choose Our Stacking Chair Mould

15-chair stacking with only 825mm total height

Integrated linking mechanism - no external clips needed

BIFMA-tested for 100,000 sit cycles at 100kg

30-minute setup for 1000 chairs with professional crew

Frequently Asked Questions

Common questions about our Stacking Chair Mould

What is the maximum safe stacking height?

Our design is tested and approved for 15-chair stacking (825mm total height). For transport, we recommend securing stacks at 12 chairs maximum. The stack remains stable up to 5° off-vertical.

How does the integrated linking mechanism work?

Each chair has molded hooks on the sides that engage with the adjacent chair's frame. No separate parts needed. Linking is automatic when chairs are placed side-by-side, unlinking requires slight lift.

What fire safety certifications can these chairs meet?

With appropriate fire-retardant PP grades, our chairs can meet CAL 117, BS 5852, and EN 1021 fire safety standards. We can specify material grades for your target certification.

Can seat padding be added?

Yes, the seat and back surfaces are designed to accept clip-on upholstered pads. We can provide the pad frame mould as an add-on, or design the chair for third-party pad systems.

What is the warranty for commercial use?

The mould is warranted for 500,000 shots. Chairs produced should be rated for 5+ years of commercial use with proper handling. We provide recommended production parameters for maximum chair durability.

How fast can 1000 chairs be set up?

With our linking design and efficient stacking, experienced crews can set up 1000 chairs in approximately 30 minutes (3 crews of 2 people). The automatic linking saves significant time vs. clip systems.