Food-grade EPS Sandwich Boards

Product Details

Food-grade high-cleanliness EPS sandwich boards are the most cost-effective classic prefabricated building envelope material in the global food processing, livestock slaughtering, cold chain storage, and pharmaceutical packaging industries. With its superior hygiene and disease prevention performance, excellent thermal insulation and moisture resistance, and flame-retardant and self-extinguishing properties, it has become the best choice for cross-border food companies to safeguard food safety and energy efficiency.

In the food and agricultural product processing sector, building envelope systems not only need to block external heat waves but also face frequent high-pressure water jet washing, chemical disinfectant corrosion, and near-abnormally zero-tolerance regulatory thresholds for mold and bacteria. Food-grade EPS sandwich boards are a modular, assembled solution specifically designed for such high-cleanliness, temperature-controlled environments.

Product Structure

Food-grade EPS sandwich boards are composite-formed on an automated continuous production line, and their material selection fully complies with international food hygiene and safety standards.

Food-grade non-toxic outer shell (double-sided color-coated steel sheet): The surface color-coated sheet typically uses polyvinylidene fluoride (PVDF) or high-weather-resistant (HDP) self-cleaning coating. The resins and pigments used in the coating fully comply with US FDA or European food-grade contact standards. The surface is smooth and dense, non-toxic, odorless, and does not shed particles.

Flame-retardant high-density EPS core material: The core layer uses modified polystyrene foam (EPS) injected with flame retardants. Its density is mostly locked within the high-standard range of 14kg/m³-20kg/m³, and the interior contains countless closed, non-toxic micropores.

Food-grade environmentally friendly adhesive: A solvent-free, formaldehyde-free, mildew-resistant environmentally friendly polyurethane composite adhesive is used, cured under high-pressure continuous hot pressing to ensure a long-term peel strength of ≥0.1MPa between the steel sheet and the core material, preventing delamination due to moisture.

Structure of Food-grade EPS Sandwich Boards

Technical Parameter Table

EPS Sandwich Boards – Span Table

Core Features and Technical Advantages

1. Ultimate Antibacterial and Anti-mold Properties

• Zero Mold Growth Environment: The food-grade color-coated steel sheet undergoes a special hydrophobic and antistatic treatment, making it extremely difficult for stains, bloodstains, and meat scraps to adhere. Neither the core material nor the surface material provides any nutrients, naturally possessing anti-mold and anti-bacterial capabilities, meeting the stringent requirements of HACCP and GMP quality systems for wall casings.
• Resistant to Chemical Cleaning and Disinfection: The surface steel sheet has excellent acid and alkali resistance, capable of withstanding long-term spraying and rinsing with high-frequency chemical disinfectants such as peracetic acid and sodium hypochlorite in food factories without fading or rusting.

2. Perfect Moisture and Airtightness

• ≥95% Closed-Cell Ratio Defense: Food workshops typically have extremely high internal humidity; ordinary building materials will mold and collapse once they absorb water. The extremely high closed-cell ratio of the EPS core makes its water absorption rate almost zero.
• Seamless Tongue-and-Groove Joint: The panels utilize a precise tongue-and-groove structure, ensuring a tight seal at the joints. It can be further fine-tuned with food-grade silicone sealant. This high airtightness completely prevents the penetration of external moisture, eliminating the hidden danger of water droplets or dripping from walls caused by temperature fluctuations, thus preventing food contamination.

3. High Energy Efficiency, Thermal Insulation, and Flame Retardant

• Stable Temperature Control: The thermal conductivity of the EPS core is ≤0.038W/(m⋅K). Whether in slaughterhouses requiring constant temperature or high-altitude freezers, it effectively locks in indoor cooling, helping businesses directly reduce HVAC/refrigeration unit operating costs by 35%.
• B1 Flame Retardant Self-Extinguishing Grade: Containing flame-retardant agents, it self-extinguishes upon removal of the flame source, preventing the spread of fire and providing a fundamental fire safety barrier for food factories.

4. Modular Dry Installation

• 100% Factory Prefabrication: All panels are precisely cut to length according to BIM drawings in a large-scale, digitally-controlled factory. Food-grade aluminum alloy fittings with inner R-angles are included with each package, ensuring no dead corners and easy cleaning.
• Construction Time Halved: After arrival on site, workers only need to tighten bolts and perform tongue-and-groove splicing. On-site construction is zero-welding, zero-dust, and entirely dry. Construction speed is 3-4 times faster than traditional masonry work, helping global investors seize market share with extremely fast business turnover.

Global Application Scenarios

Due to its high hygiene standards and cost-effectiveness, food-grade EPS sandwich boards are widely used in the following industrial assets.

Slaughtering and Meat Processing Workshops: High-cleanliness areas for the cutting, packaging, and cooked food processing of pork, beef, chicken, etc.

Dairy and Beverage Baking Production Lines: Milk and beverage bottling workshops, and cleanrooms for bread and aseptic pastry baking.

Seafood and Cold Chain Logistics Warehousing: Quick-freezing warehouses for seafood, ambient temperature storage warehouses, and fruit and vegetable sorting centers in coastal port cities.

Pharmaceutical and Cosmetic Sterile Cleanrooms: Class 100/Class 1000 cleanroom partitions and ceilings with strict control over airborne particles and bacteria.

Food-grade EPS sandwich boards are indispensable in the modern food industry supply chain, boasting both hygiene and energy efficiency. Choosing a reputable manufacturer with extensive experience in providing comprehensive, one-stop overseas solutions (such as Canglong Group) will provide you with a closed-loop management service, from detailed design based on local regulations, compliant material supply, ocean freight booking and customs clearance to remote/on-site installation guidance. This will provide extremely high cost-effectiveness and certainty, securing a robust safety barrier for your green food infrastructure.

Sandwich Panel Production Workshop

Sandwich Panel Packing & Shipping

All the products are loaded at the loading site of our factory using crane and forklift by our skilled workers, who will prevent the goods to be damaged. And all the structure components, panels, bolts and sorts of accessories will be well packed with standard package and it is suitable for ocean transport.

Our Certificates

Our sandwich panel certificates include EU CE certification, BPS certification, and ICC certification.

Application of Sandwich Panels

Usage scenario: Insulated sandwich panels are used as exterior walls and interior partitions, installed vertically or horizontally on single span or multi span structures. Such as industrial buildings, steel frame structures, warehouses and logistics centers, commercial buildings and offices, fire-resistant buildings, agricultural and livestock buildings, sports halls, exhibition halls, factories, garages, hangars, barns, prefabricated houses, cold storage, clean room, etc.