Design Choices to Reduce Thermoforming Costs

In thermoforming, wall thickness is one of the most critical cost drivers. Even small inefficiencies in thickness distribution can significantly increase material usage, cycle time, and overall production cost.

At HIPLEX Technologies, we focus on precision-engineered thickness optimization—ensuring every micron of material contributes to performance, not waste.
Optimized part geometry and radii play a critical role in achieving uniform wall thickness.
In high-volume production, multi-cavity tooling design must ensure consistent thickness across all parts.

WHY WALL THICKNESS MATTERS

1. Direct Material Cost Impact

Material accounts for 60–80% of total product cost
Excess thickness = direct cost increase
Uniform optimization = immediate savings

2. Structural Integrity vs Overdesign

Over-thick designs don’t always mean stronger products
Smart distribution ensures:
Strength where needed
Reduction where not required

3. Cycle Time Efficiency

Thicker parts require:
More heating time
Longer cooling cycles
ptimized thickness = faster production

COMMON DESIGN MISTAKES

Uneven Wall Distribution
Thick base + thin side walls
Leads to weak points and material waste

Over-Engineering

Adding thickness “for safety”
Increases cost without functional benefit
Ignoring Material Flow
Poor design leads to:
Thinning in corners
Stress concentration

HIPLEX APPROACH: ENGINEERED OPTIMIZATION










Uniform Thickness Strategy

Maintain consistent wall distribution across geometry
Avoid unnecessary mass concentration
Consistent thickness helps in reducing secondary operations such as trimming and rework.

Functional Thickness Design

Reinforce only:
Load-bearing areas
Stack zones
Edge structures

Material Intelligence

Use PET behavior knowledge:
Stretch ratios
Heat zones
Flow characteristics

TECHNICAL DESIGN PRINCIPLES

Ideal Thickness Range

Depends on application, but:
Thin enough for cost efficiency
Thick enough for structural performance

Thickness Control Zones

Area                                       Design Focus
Base --------------------------------- Load support
Side walls -------------------------- Uniform thinning control
Corners ----------------------------- Radius-driven distribution
Rim / flange------------------------ Strength + stacking

Use of Radii

Sharp corners = thinning risk
Smooth radii = better material distribution
Proper draft angles also support uniform material distribution and prevent thinning at vertical walls.

Plug Assist Optimization

Controls material stretch
Ensures even thickness in deep draws

OPTIMIZING WALL THICKNESS

BENEFITS OF OPTIMIZATION

Reduced Material Consumption
Up to 20–40% savings depending on design

Improved Product Consistency

Uniform thickness = predictable performance

Faster Production

Reduced heating & cooling cycles

Lower Rejection Rates

Better structural integrity

INDUSTRY APPLICATIONS

• Food packaging trays

• PET cups and containers

• Blister packs

• Industrial packaging

  
  

HIPLEX VALUE PROPOSITION

At HIPLEX, we don’t just manufacture—we engineer efficiency.

We combine:

• Advanced tooling design

• Material science expertise

• Precision thermoforming

To deliver:
Stronger products with less material
Lower cost without compromise

CONCLUSION

Optimizing wall thickness is not about making products thinner—
It’s about making them smarter.

With the right design approach, manufacturers can achieve:

• Cost reduction

• Performance reliability

• Sustainable material usage

Explore Complete Design Guidelines

Explore our complete Thermoforming Design Guidelines to understand how geometry, tooling, and process optimization work together to deliver consistent, high-quality production.