Plastic Armless Chair Mould

Q: What is the weight capacity of chairs from this mould?

Chairs are designed for 150kg static load with a 1.5x safety factor. Dynamic testing (drop test) passes at 100kg from 200mm height. For heavy-duty applications, we can reinforce critical areas.

Q: How many chairs can be stacked for storage and transport?

Standard stacking is 10 chairs (650mm stack height). For transport, we recommend securing stacks at 8 chairs. The nesting design allows 12 empty chair frames per pallet.

Q: Can UV-resistant material be used?

Yes, the mould is compatible with UV-stabilized PP compounds. We recommend adding 2-3% UV stabilizer for outdoor applications. With proper UV stabilization, chairs maintain color and strength for 5+ years outdoor use.

Q: What cycle time can be achieved?

With optimized cooling and our recommended machine specifications (650T clamp, 1500g shot), cycle times of 45-55 seconds are achievable. First-generation machines may require 60-70 seconds.

Q: Can custom textures be applied to the seat surface?

Yes, we offer standard texture options (leather grain, fine matte, wood grain) or can match custom textures. Textured surfaces hide minor molding imperfections and improve seated comfort.

Cost-effective armless plastic chair mould perfect for high-volume production. Features optimized wall thickness for material efficiency while maintaining structural integrity. Suitable for outdoor and indoor use.

Cycle Time

45-55 seconds

Mould Life

500,000+ shots

Material

Key Features

Ergonomic seating design
Stackable (8-10 chairs)
UV resistant material option
Anti-slip leg design
Weight optimized structure

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Technical Specifications

Product Size	420 x 420 x 800 mm
Mould Size	800 x 700 x 900 mm
Cavity	1 cavity
Steel	P20 / 718H
Hardness	28-32 HRC
Runner System	Hot Runner (Sequential)
Ejection	Hydraulic + Air Assist

Applications

Outdoor Events

Restaurants

Schools

Community Centers

Seating the World: Mass Production Excellence

Our armless chair moulds enable manufacturers to produce millions of affordable, durable chairs for venues worldwide.

Event Industry Case Study

A major event rental company in India needed chairs that could:

Survive outdoor use in monsoon and summer conditions
Stack 10-high for transport efficiency
Withstand daily setup/teardown abuse

Our mould design has produced over 2 million chairs for this client since 2019, with less than 0.01% warranty claims.

The Economics of Chair Production

Armless chairs are high-volume, price-sensitive products. Our mould design optimizes:

Material efficiency: 2.1kg chair weight (vs. 2.5kg industry average)
Cycle time: 45-55 seconds (vs. 60-70 seconds competitors)
Mould life: 500,000+ shots with proper maintenance

Global Market Applications

Our chair moulds serve diverse markets:

Outdoor event seating
School and educational facilities
Restaurant and café seating
Stadium and venue seating

Structural Engineering for Seated Comfort and Durability

Weight Optimization Through Finite Element Analysis

We use FEA to optimize wall thickness throughout the chair:

Seat surface: 2.5mm (load-bearing area)
Backrest: 2.0mm (reduced load)
Legs: 3.0mm (critical stress area)

This variable thickness approach saves 15% material vs. uniform designs.

Stackable Design Engineering

Stackable chairs must balance:

Stack height (storage efficiency)
Stack stability (safety)
Nested clearance (prevent jamming)

Our Stack Design Specifications

Parameter	Value
Stack height per chair	65mm
Maximum safe stack	10 chairs
Stack stability angle	5° off-vertical still stable
Nest clearance	3mm all around

Injection Molding Challenges

Large furniture items like chairs require sophisticated molding:

Hot Runner System Design

4-point sequential valve gate injection
Cascade filling to prevent weld lines on visible surfaces
Gas counter pressure for surface quality

Cooling System

Conformal cooling in seat area (critical)
24 independent cooling channels
Target: <10°C temperature variance across part

Why Choose Our Plastic Armless Chair Mould

15% material savings through FEA-optimized design

45-55 second cycle time for maximum productivity

10-chair stackable design with 65mm per chair

4-point sequential injection eliminates visible weld lines

Frequently Asked Questions

Common questions about our Plastic Armless Chair Mould

What is the weight capacity of chairs from this mould?