A two-component MDI-based polyurethane foam system for moulding shoe soles, midsoles and insoles. The cured PU delivers light, cushioning comfort with lasting resilience, contouring to the foot for a supportive fit while staying breathable. A fast-cure system (about 48–52 s at 20 °C) at an A : B ratio of 1 : 4, suited to high-volume footwear moulding lines.
1 : 4
A : B mixing ratio
48–52 s
curing time (20 °C)
Light
cushioning / resilient
MDI
two-component system
OEM
custom hardness & colour
Key Features
Superior comfort & cushioning Light, springy PU absorbs impact for all-day underfoot comfort.
Durable resilience Holds its shape and rebound through extended wear for long service life.
Adaptive contouring fit Moulds to the foot shape for personalised support in sole and insole.
Breathable comfort Open structure aids air circulation to keep feet cooler and drier.
Fast cure, high output Cure in ~48–52 s at 20 °C for efficient mass production.
Custom hardness & colour Density, firmness and colour tuned to athletic, casual or orthopaedic footwear. OEM/ODM.
Applications
PU Foam InsolesShoe Soles & MidsolesOrthopaedic InsolesRaw Material (Polyol & MDI)
Moulded into shoe soles and midsoles, comfort & orthopaedic insoles and arch supports for athletic, casual, safety and medical footwear.
Technical Specifications
Item
Component A
Component B
Description
Mixed polyols
Polymeric isocyanate (MDI)
Appearance
Light yellow homogeneous liquid
Dark brown viscous liquid
Mixing ratio (W)
A : B = 1 : 4
Curing time (20 °C)
48–52 seconds
Hardness, density and colour tunable by formulation; typical values for reference, not a binding specification.
Processing
Moulded Pouring Poured / cast into sole and insole moulds; demould after cure.
Direct-Soling Suitable for direct-injection / pour-on-upper sole production.
Two-Component MDI A : B = 1 : 4; fast cure ~48–52 s at 20 °C.
Machine Compatible Runs on low- and high-pressure PU sole / insole pouring machines.
Packaging, Storage & Handling
Packaging Component A and B supplied in iron drums; palletised for export. Bulk on request.
Storage Keep containers sealed and dry; store indoors away from moisture, frost and direct sun. Keep the MDI component sealed against moisture.
Handling & Safety Avoid eye/skin contact; wear safety glasses. Wash skin with soap and water; flush eyes with water and seek medical attention. Full MSDS on request.
10+ years in PU raw materials Specialised blended-polyol & foam-material supplier serving industry worldwide.
Custom formulation Hardness, density and colour tuned to your footwear.
Equipment integration Sole / insole pouring machines and process support as a complete solution.
Global export & fast reply Export to EU, Latin America, Asia and beyond — we respond within 24 hours.
From Sample to Bulk Order
1. Share your footwear Tell us sole / insole type, target hardness and colour — we recommend a formulation.
2. Sample & validate Trial-pour samples; we fine-tune hardness, density and cure.
3. Scale to bulk Confirm the formula and order in bulk with flexible MOQ and tiered lead times.
Frequently Asked Questions
Is this a finished sole or a raw material?It is a two-component raw-material system (mixed polyols + polymeric MDI). Mixed and moulded, it produces shoe soles, midsoles and insoles.
What is the mixing ratio and cure time?A : B = 1 : 4 by weight, curing in about 48–52 seconds at 20 °C — fast enough for high-volume footwear lines.
Can hardness and colour be customised?Yes. Hardness, density and colour are tunable by formulation for athletic, casual, safety or orthopaedic footwear.
Which footwear can it be used for?Soles, midsoles, comfort and orthopaedic insoles and arch supports across sports, casual, safety and medical shoes.
Need PU foam for shoe soles & insoles?
Get a tailored formulation, full TDS & MSDS, and a sample for moulding validation.
✓ Custom hardness & colour✓ TDS · MSDS · COA✓ Reply within 24 h
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