Part VI Cutting-Edge Technical Solutions for Core Industry Pain Points
1. Solution: Enhancing Delamination Resistance of Alpine Hiking Boots
Root Cause:
Cyclic shear fatigue from heavy-duty repeated bending and chemical hydrolysis triggered by muddy, high-humidity outdoor conditions.
Chemical Formulation Upgrade
Adopt polycarbonate-based WPU combined with HDI/IPDI trimer curing agent
Base resin:
Synthesized from PCDL polycarbonate polyol, delivering over 5× longer hydrolysis resistance than common polyester systems
Curing agent upgrade:
Replace conventional dimer curing agents with hydrophilic modified polyfunctional isocyanate trimers; increase dosage to 5%–6% to form dense 3D IPN crosslink networks.
Material Surface Pre-Treatment: Dual Primer & Atmospheric Plasma Technology
Rubber outsole:
Apply CPP-containing water-based primer with vulcanization treatment for chemical surface roughening
EVA / PU midsole:
In-line atmospheric plasma treatment (Power: 900W, conveyor speed: 120mm/s). High-energy particles break inert carbon-hydrogen bonds and generate hydroxyl (-OH) and carboxyl (-COOH) polar groups for covalent bonding.
Footwear Process Optimization:
Staged Delayed Pressurization & Precision Thermal Activation
Activation temperature stabilized at 80°C ~ 85°C to trigger crystalline melting of adhesive
Two-stage progressive compression:
Stage 1: Low pressure 0.2 MPa hold for 3s to expel trapped air
Stage 2: High pressure 0.5 ~ 0.6 MPa hold for 10 ~ 12s to promote polymer chain entanglement.
2. Solution: Mitigating Midsole Cushioning & Rebound Decay of Running Shoes
Root Cause:
Permanent plastic deformation, cell rupture and closed-cell collapse under high-frequency repeated impact.
Molecular Modification of Base Materials
Increase hard segment proportion in PEBA/TPU:
Raise molecular weight share of PA11/PA12 hard segments to provide structural shape memory; soft segments undertake elastic deformation.
In-situ nanoparticle composite:
Dope 0.5%–1% modified PVDF microspheres or functionalized graphene as heterogeneous nucleating agents during polymerization. Cell size reduces from ~50 μm to 10–20 μm. Finer uniform cells exponentially boost compressive resistance; compression set after 100,000 cycles <8%.
Machinery & Foaming Process Upgrade: Two-Stage Precision Pressure Control & Rapid Heating-Cooling
RHCM rapid heat cycle molding integrated into moulds:
Maintain 140°C during melt injection for good fluidity; instant mould cooling to 50°C upon depressurization to lock cell skeleton and prevent cell coalescence.
Two-stage pressure relief:
Instead of single rapid venting, drop pressure to critical equilibrium first then gradually release residual pressure via precision damping, limiting cell density gradient difference between core and surface below 5%.
Structural Design for Carbon Reduction: Graded Dual-Density Composite Architecture
Upper layer (foot contact):
Ultra-high-rebound PEBA (>82% rebound) for superior comfort
Lower layer (ground contact):
5–8mm supercritical TPEE / crosslinked EVA with outstanding anti-fatigue performance
The bottom layer bears peak impact shear stress and protects upper PEBA cells from irreversible collapse, doubling service life of finished footwear.
Part VII Exhibition Highlights & End-to-End Supply Chain Matching at GISMA GUANGZHOU 2027
To help global buyers and brands resolve technical bottlenecks and capture emerging trends, GISMA GUANGZHOU 2027 organizes three flagship concurrent events bridging R&D innovation and mass production.
Invite senior R&D executives from Nike, adidas, ASICS, Anta, Li-Ning and other international & domestic sportswear brands for face-to-face technical exchanges with leading chemical & material suppliers including Arkema and Wanhua Chemical. Focus on PEBA/TPEE foaming adaptability and mass production yield challenges linked to midsole fatigue decay.
Address EU Eco-design directives and tightening PFAS persistent chemical bans. Provide one-stop consultation on compliance pathways for WPU adhesives & bio-based materials, carbon footprint accounting and third-party green certification, helping footwear exporters circumvent green trade barriers.
Conclusion & Outlook
Competition in the global footwear industry has shifted beyond appearance design and marketing into deep rivalry over micro-level material genetics and intelligent manufacturing engineering. Forward deployment of polycarbonate WPU adhesive systems, atmospheric plasma surface activation, high-hard-segment microporous PEBA and two-stage controlled-pressure foaming enables manufacturers to systematically resolve hiking boot delamination and running shoe midsole decay.
VFM (Vietnam International Footwear Machinery & Materials Exhibition) and VTG (Vietnam International Textile & Garment Industry Exhibition) adopt the Dual Alliance model. As flagship all-industry-chain events for textile, garment and footwear manufacturing, they are the most iconic and influential exhibitions of their kind in Southeast Asia. Below is the latest key exhibition information compiled for you:
Exhibition Dates: 14 October – 17 October 2026 (Held annually during the prime procurement season)
Opening Hours: 09:00 – 17:00 (Closing at 15:00 on the final day)
Venue: Saigon Exhibition and Convention Center (SECC), Ho Chi Minh City, Vietnam
Address: 799 Nguyen Van Linh, Tan My Ward, Ho Chi Minh City, Vietnam
Exhibition Scale: The estimated exhibition area exceeds 30,000 square meters. The event will gather over 600 leading exhibitors worldwide and attract more than 22,000 professional buyers and manufacturing elites from over 50 countries and regions across the globe.
