SainSmart Lightweight TPU Filament 1.75mm – Foaming LW-TPU (77A–93A)

Overview

The Lightweight TPU (LW-TPU) Filament is an advanced foaming flexible filament engineered to deliver exceptional comfort, resilience, and weight reduction without sacrificing durability. Utilizing active foaming technology, this material expands during printing to create lightweight parts with a soft-touch feel, matte finish, and outstanding flexibility.

Unlike traditional TPU materials, LW-TPU allows users to customize hardness by adjusting print temperature and speed. Print stronger, denser parts at lower temperatures or activate the foaming process at higher temperatures to create softer, lighter components. This unique capability makes LW-TPU an ideal choice for wearables, footwear, protective products, and comfort-focused designs.

Ideal For

• Footwear and insoles

• Wearable products

• Sports equipment

• Wristbands and straps

• Protective cases

• Grips and handles

• Soft-touch consumer products

• Medical support devices

• Flexible prototypes

• Lightweight functional parts

Key Features

• Adjustable hardness from 77A to 93A

• Advanced active foaming technology

• Up to 50% weight reduction compared to standard TPU

• Expands up to 172% in volume during printing

• High resilience and elasticity

• Excellent impact absorption

• Soft-touch matte surface finish

• Reduced layer visibility

• Comfortable for skin-contact applications

• Compatible with most direct-drive FDM printers

Customizable Softness & Flexibility

LW-TPU provides exceptional control over final part characteristics.

Benefits include:

• Softer parts at higher print temperatures

• Denser, stronger parts at lower temperatures

• Customizable flexibility for specific applications

• One filament capable of multiple performance profiles

• Greater design freedom without changing materials

This versatility allows users to fine-tune prints based on comfort, durability, or weight requirements.

Ultra-Lightweight Performance

Powered by active foaming technology, LW-TPU expands during printing to significantly reduce material density.

Advantages include:

• Up to 50% lighter than standard TPU prints

• Increased material efficiency

• Larger printed volume per spool

• Reduced part weight

• Improved comfort for wearable applications

In many applications, a single spool can produce the same print volume as significantly more conventional TPU material.

High Resilience & Durability

Designed to withstand repeated compression and flexing, LW-TPU quickly returns to its original shape after deformation.

Ideal for:

• Footwear components

• Cushioning systems

• Sports equipment

• Flexible mechanical parts

• Wearable products

• Protective accessories

Its combination of softness and durability makes it suitable for both hobbyist and professional applications.

Premium Matte Surface Finish

LW-TPU produces a smooth matte finish with reduced layer visibility and a soft-touch feel.

Benefits include:

• Improved appearance

• Comfortable handling

• Enhanced grip

• Reduced post-processing requirements

• Professional-quality finished parts

Specifications

Specification	Details
Material	Lightweight Foaming TPU (LW-TPU)
Color	Varies by Selection
Filament Diameter	1.75mm
Hardness Range	77A–93A
Technology	Active Foaming
Maximum Expansion	Up to 172% Volume Expansion
Weight Reduction	Up to 50% Compared to Standard TPU
Surface Finish	Matte
Flexibility	High
Resilience	High

Compatibility

Compatible with most FDM/FFF 3D printers capable of printing flexible TPU materials.

Recommended for:

• Direct-drive extruder systems

• Flexible filament-capable printers

• Standard 1.75mm filament printers

Applications

• Insoles and footwear

• Sports gear

• Wearable devices

• Protective cases

• Grips and handles

• Soft toys

• Medical support products

• Flexible prototypes

• Lightweight consumer products

• Custom ergonomic components

What's Included

• 1 × Lightweight TPU (LW-TPU) Filament Spool (1.75mm)

Customer Resources

📄 Resource Center (including user manual)
💻 Software; Carveco Guide
📧 Support Team: Direct manufacturer assistance troubleshooting. Email them at support@sainsmart.com