Expanded Polystyrene Foam Density

Eps is used for food containers molded sheets for building insulation and packing material either as solid blocks formed to accommodate the item being protected or as loose fill peanuts cushioning fragile items.

Expanded polystyrene foam density.

Expanded polystyrene insulation is a lightweight rigid closed cell insulation. A versatile building material it works well for a variety of different applications such as road construction bridge abutments slope stabilization building foundations retaining walls stadium and theatre seating fill for. It is usually white and made of pre expanded polystyrene beads. Granules are heated with steam in such a way that they are rapidly expanding foaming and forming a low density block in a special form.

Eps foam is perhaps the most common in everyday life. Astm c578 standard specification for rigid cellular polystyrene thermal insulation addresses the physical properties and performance characteristics of eps foam as it relates to thermal insulation in construction applications. Eps is available in several compressive strengths to withstand load and back fill forces. Tds expanded polystyrene doc page 2 of 4 what is expanded polystyrene eps eps is a closed cell lightweight cellular plastics material produced from polystyrene.

Polystyrene literally translated is polymerised styrene. Contact us for details. Expanded polystyrene eps is a rigid and tough closed cell foam with a normal density range of 11 to 32 kg m 3. This white foam can be seen in cups for hot beverages refrigerators insulation packaging etc the foam plastic consists of 96 98 air and 2 4 polystyrene.

Specialist foam converters for re usable foam packaging cut parts sheet materials in house design testing manufacture we are a focused team of foam converters and fabricators manufacturing bespoke stratocell and polyethylene foam packaging foam corner protectors foam case inserts foam sheet materials industrial foams gaskets polystyrene insulation and packaging products. Polypropylene coated sheets have an added layer of moisture protection. The material has been modified by the addition of flame retardant additives. As do most load bearing building materials eps foam insulation products creep under long term continuous load conditions and in critical applications this characteristic must be considered in design calculations.

This closed cell structure provides minimal water absorption and low vapor permanence. The thermal conductivity of expanded polystyrene foam of density 20 kg m 3 is 0 035 0 037 w m k at 10 c. It is extremely lightweight but strong and durable. Compressive and flexural strength values for expanded polystyrene are based on short term load conditions in accordance with typical astm test standards.

Foam types polystyrene foam standard sizes 96 x48 and 48 x24 thicknesses 1 to 32 in one inch increments can be cut to any thickness up to 32 thick.