How to Manufacture LSPC (Light SPC): Complete Production Process from Raw Materials to Finished Products
As global demand for lightweight flooring, lower logistics costs and sustainable development continues to rise, LSPC (Light SPC) has become a key upgrading direction for traditional SPC flooring manufacturers.
Adopting advanced micro-foaming technology, LSPC maintains excellent dimensional stability, click strength and mechanical performance, while reducing product density by 20%–30%. It effectively cuts transportation costs, increases container loading volume and lowers overall carbon emissions.
For export-oriented flooring enterprises, LSPC is not only a material innovation, but also a production solution that directly improves profit margins.
What is LSPC (Light SPC)?
LSPC (Light Stone Plastic Composite) is a new-generation lightweight rigid flooring evolved from conventional SPC. It perfectly meets the global trends of carbon neutrality and lightweight development, becoming a core product for the green transformation of the flooring industry.
Main Features
- Lower product density: 1.4–1.6 g/cm³
- Lighter weight per square meter, easier installation and comfortable foot feel
- Higher container loading efficiency with around 30% more loading capacity
- 20%–25% reduction in unit shipping cost
- Eco-friendly material application with less raw material consumption and lower carbon footprint
Traditional SPC flooring normally features a density of 2.0–2.1 g/cm³. By forming uniform closed-cell micro-pore structure inside the core layer, LSPC achieves 25%–30% weight reduction while retaining the original waterproof, moisture-proof and high-stability advantages of standard SPC.
Structure of LSPC Flooring
LSPC adopts a multi-layer composite structure similar to traditional SPC, balancing durability and aesthetic performance:
- UV Wear-resistant Coating – Anti-scratch, stain-resistant and easy to clean, extending service life
- Transparent Wear Layer – Enhances surface toughness against daily friction and abrasion
- Decorative Film – Natural wood grain / stone grain with realistic texture and diverse designs
- LSPC Foamed Core Layer – Core innovative layer with uniform closed-cell structure to balance lightweight performance and structural strength
- IXPE / EVA Silent Pad (Optional) – Shock absorption, noise reduction and improved walking comfort
Structure of LSPC Flooring
The lightweight foamed core layer is the core technological innovation that differentiates LSPC from conventional SPC.
LSPC Complete Manufacturing Process
LSPC shares a similar production workflow with traditional SPC, yet requires higher technical standards in formula design, micro-foaming control and full-line automation.
The core target is to achieve 20%–30% weight reduction via stable closed-cell foaming, without compromising dimensional stability, click strength and surface quality.
Process Flow
Raw Material Preparation → Automatic Unpacking & Central Feeding → Hot & Cold Mixing → Twin-Screw Extrusion & Micro-Foaming → Three-Roll Calendering → Shaping & Cooling → Edge Trimming & Cutting → Conditioning & Stabilization → Decoration Lamination & UV Coating → Precision Click Grooving → On-Line Quality Inspection → Automatic Packaging & Palletizing
1. Raw Material Preparation
LSPC demands highly precise formula proportioning. Main raw materials include PVC resin, light calcium carbonate, Ca-Zn environmental stabilizer, foaming regulator, chemical foaming agent, lubricant and impact modifier, all compliant with international eco-friendly and formaldehyde-free standards.
High melt strength stabilizers and foaming regulators are the decisive factors for qualified LSPC production. They enhance PVC melt strength, precisely control the foaming window, form uniform and stable micro-cell structure, and effectively prevent bubble collapse and surface defects.
2. Automatic Unpacking & Central Feeding
Modern LSPC factories adopt fully enclosed dust-free automatic feeding systems, including small-bag unpackers, ton-bag discharging stations, pneumatic conveying and automatic weighing units.
The whole process realizes unmanned operation, dust-free production, precise batching and zero material loss.
3. Hot & Cold Mixing
- Hot Mixing (110–125°C): High-speed stirring enables full coating and uniform dispersion of PVC resin and additives, removing moisture and impurities.
- Cold Mixing (40–50°C): Rapid cooling avoids material agglomeration and discoloration, ensuring good fluidity and storage stability for extrusion.
4. Twin-Screw Extrusion & Micro-Foaming
This is the core procedure of LSPC production.
Under high temperature and high pressure inside the extruder, chemical foaming agents decompose and release gas. When the melt passes through the die head with sudden pressure drop, dense and uniform closed-cell pores are formed inside the board.
Strict control over temperature zone setting, screw speed, die pressure, melt temperature and foaming ratio is required. Stable process can reduce density from 2.1 g/cm³ (standard SPC) to around 1.5 g/cm³ while maintaining outstanding mechanical properties.
5. Three-Roll Calendering & Cooling Shaping
The calender precisely controls board thickness
and flatness. Multi-stage cooling platforms fix the dimension and release internal stress to avoid warping and deformation.
6. Edge Trimming, Cutting & Conditioning
Boards are trimmed, cut to fixed lengths and stacked. Afterwards, 24–72 hours of natural conditioning is required to fully release internal stress and achieve optimal dimensional stability.
7. Decoration Lamination & UV Treatment
Conditioned base boards are laminated with decorative film and transparent wear layer by hot pressing. Synchronous embossing and UV curing further enhance anti-abrasion, anti-stain performance and realistic surface texture.
8. Precision Click Grooving
High-precision grooving equipment processes interlock profiles with strict dimensional tolerance, ensuring tight splicing, smooth installation, stable click strength and low edge chipping rate.
9. On-Line Quality Inspection
Intelligent visual inspection system monitors thickness, color difference, surface defects and click dimensions in real time, automatically eliminating defective products to guarantee qualified finished goods.
Visual inspection
10. Automatic Packaging & Palletizing
Qualified products go through
counting, carton packing, weighing, sealing, labeling, automatic palletizing and stretch wrapping.
Thanks to lighter unit weight, LSPC improves packaging efficiency and greatly increases container loading capacity, cutting overall logistics expenditure.
Through this highly automated workflow, existing SPC production lines can be upgraded for LSPC manufacturing, delivering high-value lightweight flooring with lower material and logistics costs for global markets.
Core Advantages of LSPC Production
1. Dramatically Lower Logistics Costs
Practical export cases prove:
- Container loading capacity increased by around 30%
- Unit transportation cost reduced by 20%–25%
- Medium-sized flooring exporters can save over USD 200,000 in logistics costs annually
2. Stronger Market Competitiveness
- Higher profit margins with lower raw material and shipping expenses
- Greener and low-carbon, matching global carbon neutrality policies
- Ideal for long-distance export, solving high overseas logistics cost pain points
3. Easy Upgrade from Existing SPC Lines
No large-scale reconstruction required. Only minor optimization is needed:
- Adjust raw material formula
- Upgrade to high melt strength stabilizer system
- Optimize extrusion and foaming process parameters
- Calibrate temperature and equipment precision
Fast upgrading cycle with low investment and quick return.
StarsPlas: LSPC Smart Factory Automation Solution Provider
As a professional Vinyl Flooring Smart Factory Automation Solution Provider, StarsPlas dedicates to customized turnkey solutions for global SPC/LSPC manufacturers, supporting production upgrading, cost reduction and efficiency improvement.
Our product portfolio covers:
- Automatic raw material unpacking & feeding system
- Complete SPC / LSPC extrusion production line
- High-precision online click grooving machine
- AI visual quality inspection system
- Automatic packaging, palletizing & wrapping system
- Full factory automation integration service
We assist clients in upgrading from traditional SPC to high value-added LSPC production, achieving lower cost, higher efficiency and stronger global market competitiveness.
production line
Conclusion
LSPC (Light SPC) represents the mainstream development trend of the global SPC flooring industry, featuring lightweight design, environmental friendliness and high cost performance.
With scientific formula design, mature micro-foaming technology and highly automated production systems, flooring manufacturers can realize lightweight product upgrading without heavy additional investment, reduce logistics costs significantly and expand competitive overseas market share.
For flooring enterprises pursuing higher profit margins and differentiated competition, it is the perfect timing to deploy LSPC production and seize future market opportunities.
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