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دوشنبه 10 دی 1397 زمان : 10:48

Example of temperature-sensitive products that require EPS containers are – seafood, fresh produce, pharmaceuticals, and variety of medical products

Versatility- It can be used to manufacture to almost any shape or size as it can be easily cut and shaped according to the requirement. It is also produced in a variety of densities with different physical properties according to the requirement of the product. Its compatibility with a large number of products also helps to increase its worth from other alternatives.

Ease of Use- EPS is regarded as the easiest material to be used especially in the construction industry. It is normally present in form of sheets which can be easily molded into shapes or large form blocks, as per the requirement.

Physical Properties
Density, lb./cu.ft. – 0
Compressive strength, p.s.i. –31-37
Tensile strength, p.s.i. – 58-61
Thermal resistance, R/in. – 2
Electrical Properties
The dielectric strength of EPS material is approximately 2KV/mm. At frequencies up to 400 MHz, the permittivity offered by the material is 1.02-1.04 with a loss factor which is less than 5×10-4 at 1MHz and less than 3×10-5 at 400 MHz.

The molded form of EPS can be treated with some anti-static agents to be used in electronic industries and military packaging.

Chemical Resistance
EPS is highly resistant to water and aqueous solutions of salts, acids, and alkalis. It is usually not compatible with organic solvents. UV radiation up to 120-140F has a slight effect on the molded form of material. It usually causes yellowing friability of the material but does not affect its physical properties.

Applications of Expanded Polystyrene
It is applicable to a variety of end-user markets in different forms. EPS is used to produce semi-finished and finished goods. The semi-finished materials produced from EPS are:

Expanded Polystyrene Foam Sheet
EPS materials on a very large scale are used to produce foam sheets globally. These sheets offer ease of use as they can be easily cut and molded or reshaped according to the requirement of usage.

EPS characteristics including lightweight ease of work, superior R-Value, strong moisture & water resistance etc prove its suitability, especially in the packaging sector.



EPS foam sheets are widely used in wall insulation, roofing, subfloors, medical product transportation and even for transporting perishable consumables.

Expanded Polystyrene Insulation
Today due to design-oriented goals of sustainability and energy efficiency, usage of insulation is gaining more importance than ever. There are different ways used to insulate a building. The most versatile three options available for rigid insulation are, EPS being used in roof, wall, floor, below grade and structural geo-foam applications.

EPS foam is the kind of insulation is used most widely in insulated concrete forms and structural insulated panels. EPS foams are cost-effective and also meet all required building and energy codes.

Pros and Cons of EPS Insulation
There are certain advantages and disadvantages associated with the usage of EPS insulation material which are:

Pros

Long-term and provide stable R-Value.
Prevent from mold or mildew growth.
They can be easily recycled.
EPS insulating materials can be placed below grade.
They can also be used for inverted assemblies.
Cons

Exposure to the sun can deteriorate the product.
Solvent-based materials can cause severe damage.
Temperature above 250 degrees of Fahrenheit can melt polystyrene.
They are incompatible with certain kind of thermoplastics which may result in permanent degradation.
It is flammable and requires proper placement.
EPS is commonly used over house wraps or with products that provide factory lamination options. The R-Value provided by these EPS insulation dose does not degrade easily. Polystyrene insulations are also being used in asphalt built-up roofing systems with certain provisions to protect insulation heat and solvent-based products.

Market Applications of EPS
EPS material used commonly in form of EPS sheets has a wide range of users in different end segment industries according to the requirements. Some prominent sectors using this form of polystyrene are as follows:

Packaging Applications
EPS is a dominating material in packaging industry applicable to a number of uses due to its favoring characteristics. Perishable products such as egg, meat, fish and poultry, even cold drinks and carry out meals use EPS packaging materials to keep product safe and fresh.

EPS material has been recognized as a major versatile cost-effective solution for food and goods packaging globally.

Building and Insulation Applications
EPS resins are one of the most commonly used materials in building and construction industry. The insulation foams are widely used in roofs, floors and closed cavity walls etc. Due to its excellent price and performance ratio nowadays it is also being used in pontoons and construction of roads.

These foams are also being used

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