EPS F-Sb Flame Retardant Grade EPS Plastic Granules for Building External Wall Insulation Boards Roof Insulation

Product Description

 

Product Description

Expandable Polystyrene EPS

 
   Key Performance Advantages
1. Ultra-lightweight and Excellent Specific Strength
The density of finished foamed products typically ranges from 10 to 30 kg/m³, only 1% to 3% that of water, making it one of the lightest industrial thermal insulation and packaging materials available. Its density can be precisely adjusted to achieve excellent compressive and flexural properties at extremely low dead weight, significantly reducing transportation, construction, and structural load costs. It is perfectly suited for large-size products and lightweight application scenarios.
2. Outstanding Thermal Insulation Performance
Its independent honeycomb structure with a closed cell ratio over 95% uses static air inside the cells to efficiently block thermal convection and conduction. The thermal conductivity is stable at 0.032 to 0.038 W/(m·K) at conventional density, far superior to traditional inorganic thermal insulation materials. Its performance shows no significant attenuation within the temperature range of -40ºC to 70ºC, making it the core benchmark material in the building energy conservation and cold chain insulation sectors.
3. Excellent Cushioning, Seismic Resistance and Energy Absorption Capacity
Under impact load, the closed-cell structure efficiently disperses and absorbs impact energy through plastic deformation and gas compression, absorbing more than 90% of the impact kinetic energy. It can withstand free fall impact from a height of 3 meters in standard drop tests. Its cushioning performance can be custom-designed via density and wall thickness adjustment, adapting to full-scenario protection needs from precision electronic components to heavy industrial equipment.
4. Exceptional Dimensional Stability and Weather Resistance
The dimensional change rate is less than 2% under conventional service conditions (compliant with ASTM D2126 standard), with no obvious creep under fluctuating temperature and humidity or long-term static load conditions. It has excellent anti-aging performance in conventional environments, is resistant to most common chemical media including dilute acids, dilute alkalis, lime, and asphalt, and shows no significant performance degradation except under long-term strong UV radiation.
5. Ultra-low Water Absorption and Moisture Resistance
The fully closed-cell structure has almost no interconnected pores, with a water absorption rate of less than 3% after 96 hours of immersion, far lower than open-cell thermal insulation materials. It can maintain long-term stable thermal insulation and mechanical properties in humid environments, with no risk of mildew or rot, making it perfectly suitable for cold storage, underground engineering, and high-humidity area applications.
6. Superior Processability and Customization Capability
Beads can be one-step molded into products of any complex shape via steam thermoforming, or secondary processed on-site via electric heating wire cutting and adhesive splicing. It features a short molding cycle, low mold cost, and enables full-range production from standardized boards to custom-shaped liners, adapting to both large-scale mass production and personalized customization needs.
7. Functional Modifiability and High Cost-effectiveness
Functional modifications including flame retardant, anti-static, food contact grade, and graphite reinforced can be achieved via formula adjustment to meet special compliance and performance requirements in different scenarios. The raw material and processing costs are much lower than similar foam materials such as EPP and PU, with a significant cost-performance advantage in large-scale applications.

 

Selection Guide

Step 1: Confirm 5 Core Preconditions
1. Application scenario of the final product and core performance requirements (e.g., building insulation/home appliance packaging/cold chain/lost foam casting, and whether there are mandatory requirements such as flame retardant, anti-static, food grade);
2. Structural design of the product (wall thickness, dimensions, complexity, minimum mold cavity size);
3. Customer's existing processing equipment and process (pre-expander type, molding machine tonnage, steam pressure, production cycle requirements);
4. Target finished product density and mechanical performance requirements (compressive strength, thermal conductivity, drop test standards);
5. Compliance and certification requirements (national standards, fire protection grades, FDA/RoHS, food contact standards, environmental protection and recycling requirements).

Step 2: Check the Core Selection Indicators of EPS Grades
The core differences between EPS grades are concentrated in 6 key indicators, which directly determine the product performance and process adaptability:
1. Bead Particle Size and Particle Size Distribution
       Large-size, thick-walled, low-density products (e.g., insulation boards, large fishing boxes): Select coarse/medium-coarse beads (0.8~1.6mm), with high expansion ratio, good molding fusion performance, and high production efficiency;
Conventional packaging, medium wall thickness products: Select medium beads (0.5~1.0mm), balancing molding accuracy, foaming stability and surface finish, with the strongest versatility;
      Thin-walled, complex structure, high surface finish products (e.g., precision electronic liners, decorative components, lost foam casting): Select fine/ultra-fine beads (0.3~0.7mm), which can fill complex mold cavities, with no particle marks on the product surface and high dimensional accuracy.
      Pitfall warning: It is strictly prohibited to select grades with mixed coarse and fine beads, which will lead to uneven pre-expansion ratio, local material shortage after molding, surface unevenness, and inconsistent strength.

2. Expansion Ratio and Nucleation Performance
Low-density products (<16g/L, e.g., insulation boards, lightweight filling): Select high expansion ratio grades (expansion ratio ≥50 times), with high blowing agent content, good nucleation performance, which can achieve cell uniformity at ultra-low density and avoid collapse;
Medium and high density products (16~30g/L, e.g., conventional packaging, cold chain boxes): Select medium expansion ratio grades (30~50 times), with good foaming stability, balanced strength and lightweight, and short molding cycle;
High-density products (>30g/L, e.g., heavy-duty packaging, buoyancy materials): Select low expansion ratio, high strength grades (20~30 times), with high molecular weight, strong bead rigidity, and excellent compressive and creep resistance after foaming.

3. Molding Processability
Mass production, automated production lines (e.g., home appliance packaging factories): Select fast molding grades (B grade/fast grade), with fast cooling and setting, short molding cycle, which can greatly increase machine capacity and reduce energy consumption;
Special-shaped complex products, thick-walled products: Select high fusion performance grades (E grade), with good bead bonding, no fusion marks, high overall product strength, and avoid cracking and material shortage;
Small processing plants, low-pressure steam equipment: Select low-pressure easy-molding grades, adapting to low steam pressure conditions, and enabling stable production without equipment modification.

4. Functional Modification Grade 
Flame retardant grade: Added with environmentally friendly flame retardants, divided into Grade B1 (non-combustible) and Grade B2 (combustible, self-extinguishing away from fire), compliant with GB 8624 standard. Mandatory for scenarios with fire protection requirements such as building exterior wall insulation, interior decoration, and electrical packaging. It is strictly prohibited to replace with ordinary grade;
Graphite-modified grade (black EPS): Added with graphite nanosheets, with thermal conductivity as low as below 0.030 W/(m·K), thermal insulation performance improved by more than 20% compared with ordinary EPS, and also has flame retardant performance, suitable for ultra-low energy consumption buildings, high-end cold storage and other scenarios with extremely high thermal insulation requirements;
Anti-static grade: Added with anti-static agent, with surface resistance of 10^9~10^11Ω, which can prevent static accumulation. Mandatory for packaging of semiconductors, chips, and precision electronic components to avoid electrostatic breakdown of components;
Food contact grade: Passed national GB 4806.7 or FDA food contact certification, no harmful monomer residue, compliant blowing agent. Mandatory for scenarios in direct contact with food such as food insulation boxes, disposable lunch boxes, and fresh food trays.

5. Molecular Weight and Mechanical Properties
Long-term static load scenarios (e.g., roof insulation, roadbed filling, buoyancy materials): Select high molecular weight, high rigidity grades, with good creep resistance, no settlement or deformation during long-term use;
 High impact resistance scenarios (e.g., heavy equipment packaging, precision instrument protection): Select medium-high molecular weight, high toughness grades, with strong impact energy absorption capacity and excellent drop protection performance;Lightweight, fast molding scenarios: Select medium-low molecular weight grades, with easy foaming and molding, high production efficiency, and lower cost.
 

Detailed Photos

 

APPLICATION


 1.  Expanded polystyrene with relatively low density (1.05 g/cm3), low thermal conductivity, low water absorption, impact resistance,heat insulation, sound insulation, moistureproof, vibration damping and excellent dielectric properties, widely
used in mechanical equipment, instruments and meters, household electric, crafts and other valuable products easily
damaged, shockproof packaging materials as well as the fast food packaging.
 2.  Flame retardant EPS grades confer excellent processing and product properties Consistent raw bead and good
fluidity of foamed bead Rapid expansion Relatively low density in second-time expansion.
 3.  Excellent flame retardation with the US UL Product Security Certification. Wide range of operation and suitable for
various block machines, automatic machines and manual presses.
 

 

Product Parameters

 

Brand	Grade	Particle Size (MM)	Foaming Density (g/l) - General Grade	Foaming Density (g/l) - Light Grade	Foaming Density (g/l) - Fast Grade	Foaming Density (g/l) - Flame - Retardant Grade
Dragon King	MS	1.0 - 1.6	11 - 14	10 - 12.5	14 - 17	10 - 12.5
	SA	0.8 - 1.2	12 - 15	11 - 14	15 - 20	11 - 14
	SB	0.6 - 0.9	13 - 17	12.5 - 13	17 - 25	12.5 - 13
	S	0.4 - 0.7	14 - 18	13 - 18	18 - 29	13 - 18
	4S	0.3 - 0.5	20 - 28	18 - 50	20 - 50	18 - 50
Taida	M	1.2 - 2.0	11 - 14	10 - 12.5	14 - 17	10 - 12.5
	T	0.85 - 1.4	12 - 15	11 - 14	15 - 20	11 - 14
	S	0.7 - 1.1	13 - 17	12.5 - 13	17 - 25	12.5 - 13
	SS	0.7 - 0.9	14 - 18	13 - 18	18 - 29	13 - 18
	F	0.5 - 0.85	15 - 18	25 - 33	19 - 33	25 - 33
	H	0.3 - 0.6	20 - 28	18 - 50	20 - 50	18 - 50
Jiachang	103	1.0 - 1.6	11 - 14	10 - 12.5	14 - 17	10 - 12.5
	104	0.85 - 1.25	12 - 15	11 - 14	15 - 20	11 - 14
	105	0.7 - 1.0	13 - 17	12.5 - 13	17 - 25	12.5 - 13
	106	0.5 - 0.8	14 - 18	13 - 18	18 - 29	13 - 18
	107	0.4 - 0.6	15 - 18	25 - 33	19 - 33	25 - 33
	108	0.3 - 0.5	20 - 28	18 - 50	20 - 50	18 - 50

 

 

 

 

 

 

 

Molding precautions

Content	English Translation
Multiple foaming	Multiple foaming. The expansion ratio is for reference only. The achievable expansion ratio has a great relationship with actual operating conditions, such as the type of foaming machine, the way of feeding foam particles, the aging time after each foaming, and the shrinkage of pre - expanded particles.
Avoid shrinkage during multiple foaming	When performing multiple foaming, it is necessary to avoid shrinkage, especially pay attention to the secondary foaming. The interval between each foaming is 2 - 6 hours, distinguished by particle size. It is not advisable to carry out the next foaming more than 12 hours later. Otherwise, it will directly affect the final achievable high expansion ratio, molding processing performance, plate hardness, and elasticity.

EPS molding method

Step	Description
Molding Method	The processing should go through the following three steps: pre - foaming, storage, and molding.
Pre - foaming	Pass steam through Taida EPS beads. Heat to make the particle volume expand approximately 50 - 90 times. Batch or continuous operation can be used during heating. The expansion ratio of the beads is related to factors such as the type of pre - foaming equipment used, steam, and heating time. Therefore, to make the beads foam to a certain extent, tests must first be carried out to find the most appropriate conditions. (Steam pressure 0.2 - 1.0 kg/cm²)
Storage	The pre - foamed beads should be stored at room temperature for about 24 hours (at least 6 hours or more). During this period, the excess water inside and outside the foamed beads has evaporated, and air has also penetrated into the voids of the pre - foamed beads. This will be helpful for subsequent processing and molding.
Molding	The pre - foamed beads after storage can be molded by manual, semi - automatic, or fully automatic molding machines. First, introduce low - pressure steam during molding to blow away the air between the beads. Then gradually increase the steam pressure to 0.5 - 1.0 kg/cm² to make the pre - foamed beads form in the mold. Finally, pass water or use vacuum pumping, and take out the molded product after cooling.

 

Certifications

 

 

 

Packaging & Shipping

 

Packaging:

1. Bags: 25 kg polyethylene or paper bags, moisture-proof and sturdy.
2. Bulk Bags: 500 kg or 1000 kg bulk bags, moisture-resistant and durable.
3. Sealed Containers: For maximum protection against moisture and contamination.

Transportation:

1. Shipping Containers: 20-foot or 40-foot containers for international shipments.
2. Truck Transport: Securely loaded trucks for domestic transportation.
3. Rail Transport: Bulk bags or sealed containers loaded onto rail cars.

Handling Precautions:

1. Avoid Moisture: Keep EPS resin dry to maintain quality.
2. Secure Loading: Ensure bags and containers are fastened to prevent shifting.
3. Temperature Control: Avoid extreme temperatures.
4. Safe Handling: Use proper equipment to prevent spillage.

Contact Us: Get in touch to start our collaboration today.

Contact us now to customize packaging and branding exclusively for your company

Notice: EPS contains volatile and combustible composition and should therefore be kept far away from any source of ignition, perferable in a cool, dry and well-ventilated storeroom below 25 ºC out of direct sunlight.


The effective durability Is 6 months at the temperature impact 25;, however the ideal material shouldUsed within 3 months of the production. Once the package is unfolded, the propellant isDissipates quickly. EPS should therefore used immediately after bags open to avoid the reductionOf expansion ratio or lose efficacy.

Reasonable weightt loss:EPS contains high-volatility propellant (C5). It is therefore normal to loseWeight in the first half month after the product leave the factory.

 

Packing	Weight/kg	20'fcl capacitive & auml; T	40'fcl capacitive & auml; T
Paper bag (Laminated kraft paper)	25	17,00 Mt	25,50 Mt
Flecon bag (Super sack)	850	17,00 Mt	25,50 Mt

 

Company Profile

         Hebei Chijiang Import and Export Co., Ltd. is a professional, agile and international plastics chemical supplier, specialising in the plastics and its products industry for more than 10 years, with the most complete international supply chain of plastics raw materials. We offer high quality raw materials, the most agile information on the plastics chemical market and can match you with the most suitable raw material options. Our experience, flexibility and professionalism have LED us to a large number of customers. We have delivered a wide range of different plastic chemicals safely to more than 30 countries and have customers in all regions of the world.
        Chijiang′s tenet is: To survive on quality, to be credible and to strive for excellence, and at the same time, as always, adhering to the principle of "credibility first, customer first", always put the interests of customers in the first place, and provide the best products and the best quality service for every customer with all our heart. Chijiang is committed to creating more value and benefits for global users, and to building itself into a competitive first-class enterprise through continuous improvement.

Our Advantages

 

FAQ

Q1. Are you a factory or trading company?

A: We are factory with an integrated sales team, designers, and showroom. We provide comprehensive assistance to help buyers choose suitable products. All inquiries are responded to within 24 hours.

Q2. Can I get samples for testing?
A: Yes, we provide samples. Customers cover the initial shipping costs, which are reimbursed in our first cooperation.

Q3. How does your factory ensure quality control?
A: Our factory is ISO9001:2008, REACH, and FAMIQS certified, ensuring rigorous quality control. Each Batch of goods do SGS inspection before leaving our factory.

Q4. What's your Delivery Time?
A: Delivery typically takes 5 to 10 days after payment receipt. Larger orders are confirmed with our production department for prompt, quality-assured delivery.

Q5. What are your payment terms?
A: We accept L/C, T/T, Western Union, and Paypal. Alternative methods can be discussed.

Q6. Which documents do you provide?
A: Standard documents include Commercial Invoice, Price List, Packing List, COA, Origin Certificate, Quality/Quantity Certificate, Beneficiary's Certificate, MSDS, B/L, and others upon request.
 

Additional Information:

• Packing: Usually 25kgs PP bag ; custom packing available.
• Reply Time: Sales managers respond within 24 hours.
• Product Validity: Typically 2 years.
• Sample Requests: Free samples upon agreed pricing, with shipping costs upfront.
• Loading Port: Primarily SHANGHAI port.
• Transport Modes: Sea and train primarily used.
• Bulk Orders: Discounts available for large quantities.

Contact us now to discuss and place your order for premium EPS resin. (Professional Techinical Engineers Online!!!)