Customer Case

Solid Foam WPC Door Frame Extrusion Line for Indian

Custom Solid Foam WPC Door Frame Extrusion Line for Indian Construction Manufacturer

Client Region: India
Industry: Construction & WPC Profile Manufacturing

Project Background & Client Challenges

India’s construction market is witnessing soaring demand for eco-friendly, moisture-proof, low-maintenance WPC door frames. Our Indian client, a local building material manufacturer, aimed to launch full-solid foamed WPC door frame production to capture this market opportunity.
Before cooperating with Yongte Plastic Machinery, the client faced multiple technical bottlenecks with standard WPC extrusion equipment:
  1. Conventional hollow WPC profile lines could not stabilize density, foaming uniformity and dimensional precision for thick solid foamed door frames; finished profiles suffered warpage, uneven foam cells and poor surface finish.
  2. Most standard cooling tanks were too short to fully solidify thick solid cross-sections, generating internal stress and failing to meet strict straightness tolerance standards.
  3. Local raw material adaptability issues: Generic extrusion lines performed poorly with India’s mainstream PVC grades, native wood flour and regional additives, leading to unstable production and high reject rates.
  4. Lack of integrated automated downstream equipment, requiring extra labor and causing inconsistent cutting length & material waste.


The client reached out to Yongte to develop a fully customized turnkey solid foam WPC door frame extrusion line tailored to India’s raw material characteristics and local construction product standards.


Customized Turnkey Solution from Yongte

Yongte’s R&D and engineering team collaborated closely with the Indian client to optimize every segment of the production line, fully targeting the pain points of solid foamed WPC door frame manufacturing. The complete line consists of three core customized modules:

1. High-Torque Twin-Screw Extruder with Precise Material Control

The extruder acts as the core of the whole system, specially optimized for high wood-flour filled foamed WPC formulas:


  • Custom screw & barrel structure: Delivers homogeneous plasticization, stable melt temperature and even mixing of wood fiber, PVC resin, foaming agents and additives.
  • Independent closed-loop temperature control zones: Separate heating and cooling loops eliminate material degradation and guarantee consistent foaming effect.
  • Gravimetric/volumetric dual metering feeding system: Real-time accurate dosing of all raw materials to lock uniform product density and single-meter weight.

Solid Foam WPC Door Frame Extrusion Line


2. Exclusive 9-Meter Ultra-Long Cooling & Vacuum Calibration Platform

This is the most differentiated customized design for this Indian project, solving the core forming difficulty of thick solid WPC profiles:


  • Multi-stage sequential vacuum sizing sleeves + combined spray & immersion water cooling tanks, realizing gradual low-stress solidification of thick solid door frame blanks.
  • Extended 9-meter cooling length eliminates internal stress, effectively preventing finished profiles from bending or twisting, and maintains ultra-tight dimensional tolerances for flatness and straightness.
  • Closed-loop circulating water cooling system provides uniform heat dissipation across the entire profile surface, eradicating surface bubbles, pits and inconsistent foaming cross-section defects.

Solid Foam WPC Door Frame Extrusion Line


3. Full Automated Integrated Downstream System

One-stop downstream equipment realizes unattended continuous extrusion production:


  • Heavy-duty caterpillar haul-off unit with variable frequency speed regulation: Outputs stable pulling force matching extrusion speed to avoid profile deformation.
  • Servo flying saw cutting system: Automatic length measuring & precision cutting, delivering neat cut surfaces and minimal raw material loss.
  • Central PLC+HMI intelligent control cabinet: Operators can monitor and adjust temperature, extrusion speed, vacuum degree, traction speed and all core parameters in real time, ensuring stable, repeatable production with simple operation.

Solid Foam WPC Door Frame Extrusion Line


Regional Adaptation for Indian Local Production

To fit India’s local manufacturing environment, Yongte made targeted regional optimization for the whole line:


  1. Raw material compatibility: The whole production line is calibrated to process locally sourced PVC, domestic wood flour and regional compound additives without formula adjustment.
  2. Stable operation under local power supply conditions: Key electrical components are upgraded to adapt to India’s power fluctuation environment, reducing equipment downtime.
  3. Simplified maintenance design: Wear parts and daily inspection points are arranged for easy replacement and routine maintenance by local technicians.

Solid Foam WPC Door Frame Extrusion Line


Client Value & Project Outcome


  1. Product Quality Upgrade: The line produces solid foamed WPC door frames with uniform cell structure, high mechanical strength and premium surface finish, applicable for both interior and exterior construction projects, fully meeting local market quality standards.
  2. Stable Mass Production: The customized 9-meter cooling platform completely solves the warpage and dimensional instability pain points of solid thick WPC profiles, greatly lowering product reject rates.
  3. Raw Material Cost Control: High-precision feeding and mixing system maximizes the utilization rate of local low-cost wood flour and recycled PVC, cutting overall raw material expenses.
  4. Intelligent & Low-Labor Operation: Centralized PLC automatic control reduces manual intervention, lowering long-term labor costs for the client’s factory.

Solid Foam WPC Door Frame Extrusion Line


Quote from Yongte Senior Engineer

“We customized every part of this extrusion line after in-depth communication with our Indian partner. The 9-meter super-long cooling platform is a targeted solution to the forming challenges of solid foam door frames. With this turnkey line, the client can steadily supply dimensionally stable, high-quality WPC door frames to India’s booming construction sector.”

After-Sales Service Arrangement

The fully assembled solid foam WPC door frame extrusion line has passed factory acceptance testing and is ready for shipment to India. After equipment arrival, Yongte’s professional overseas technical team will provide full on-site support including:
  • Complete equipment installation and commissioning
  • Full-process operation training for local production and maintenance staff
  • Long-distance remote technical after-sales support and spare parts supply guarantee

Why Yongte for Your WPC Extrusion Project

As a specialized manufacturer of high-performance plastic and WPC extrusion equipment, Yongte delivers region-oriented customized turnkey solutions for global clients. We combine proprietary foaming extrusion technology, tailor-made mechanical design and full lifecycle after-sales service to help manufacturers in construction, decoration and composite material industries unlock stable, high-efficiency production of premium WPC profiles.
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