Expanded Polystyrene (EPS)s

Expanded polystyrene is a closed cell, thermoplastic, lightweight, rigid cellular plastic material. It comes as small beads of resin. Thebeads are impregnated with the naturally occurring gas, pentane. The beads are then heated in a pre-expander; with the combination of this heat, and the rapid release of the gas, the bead is expanded to almost 50 times its original size. After expansion, the beads are aged between 12 to 48 hours, which allows the internal vacuum in the beads to refill with air. The pre-expanded beads are then injected into a steam chest mould. Steam applies heat and pressure, which fuses the beads together into the required foam.
Expanded Polystyrene has many useful properties. It has low thermal conductivity, and therefore can be used as an insulator against heat and cold. Further, Expanded Polystyrene is odorless and non-toxic. It does not, nor has ever emitted chlorofluorocarbons (CFCs), and is recyclable. The uses for EPS are almost limitless. It can be made into many shapes and foams to meet the customer's insulation needs.

EPS Insulation
EPS Insulation has been recognized as the most cost effective insulation on the market today. Industry professionals have known that EPS rigid board insulation continually gives them the best R-Value. EPS insulation does not exhibit "thermal drift". Other rigid insulation products exhibit a loss of R-Value due to the dissipation of low-conductivity foaming agents used in the manufacturing process. Industry professionals also appreciate the flexibility of EPS insulation. Available in a wide range of densities and sizes, any project can be completed efficiently and affordably with little to no waste. Custom sizes are always available for any project no matter how unique. "The two fastest growing construction techniques for construction rely on Expanded Polystyrene. ICF's (Insulated Concrete Forms) and SIP's (Structural Insulated Panels) are the fastest growing trends in energy efficient construction today"

Concrete Construction
EPS has the flexibility and strength to accommodate a variety of concrete construction applications. Extremely lightweight yet structurally strong, EPS is the perfect solution for concrete void fillers. Used as an internal component of a concrete structure, weight and cost are dramatically reduced without affecting the strength requirements. The unique capabilities of cutting two and three dimensional EPS foam forms are huge benefits in producing architectural concrete artwork. Reveals, box-outs, names, numbers and pictures are easily added into a concrete column or wall.

Roofing
High Insulation value, good water resistance, light weight and low cost make versatile EPS Roof Insulation ideal for use in a variety of single-ply membrane systems and built-up roofs used in new construction and reroofing applications. EPS can be cut and supplied in virtually any size or thickness to accommodate the roofing criteria. From R-Value requirements to flute filler sizes and thicknesses, versatility is the key to cost saving. Tapered EPS roof insulation systems are custom fabricated as required for each unique roof design. Designing an effective drainage system for every roof need not be made difficult by the limitations inherent in other roof insulation products.

Floatation
Being composed of 97% air, Expanded Polystyrene (EPS) is a great product that is widely used for floatation. One cubic foot of EPS is capable of supporting 60 pounds of weight. Whether you need to replace that EPS in an existing dock or a completely new project, our EPS Foam can help.

Custom Shapes-CAD/CAM Cutting
EPS Foam has aligned itself in such a way that whatever your custom shape needs are we have a cost effective solution for you. For the high volume runs we can be competitive with the standard custom shapes process. Just let us know your specifications and we will take care of the rest. These shapes can be made to any shapes and design using CAD/CAM Cutting Machine with good accuracy and consistency.

 

PHYSICAL & MECHANICAL PROPERTIES

Property

Test Method

Unit

Value

Molded Density

DIN 53420

Kg/m3

16 - 18

18 - 20

22 - 24

26 - 28

30 - 35

Comprehensive Stress

DIN 53421

kPa

12 - 19

20 - 27

28 - 50

51 - 62

64 - 74

Comprehensive Stress at 2% comprehension

DIN 53421

kPa

65 - 100

110 - 140

160 - 210

180 - 255

255 - 310

Flexural Strength

DIN 53423

kPa

160- 210

240 - 300

325 - 400

410 - 490

450 - 600

Tensile Strength

DIN 18164

kPa

150 - 230

235 - 325

260 - 415

375 - 510

490 - 590

Shear Strength

DIN 53427

kPa

90 - 120

150 - 180

220 - 250

250 - 320

320 - 360

Average Co-efficient of liner expansion between 20 & 80 oC short term

DIN 53752

k 4

6 x 105

6 x 105

6 x 105

6 x 105

6 x 105

Dimensional Stability under Heat Short term

DIN 53424

oC

95

95

95

95

95

Dimensional Stability under Heat Long term

DIN 18164

under 5 kPa

oC

85

85

85

85

85

under 20 kPa

oC

75 - 80

80 -85

80 - 85

80 - 85

80 - 85

Continuous Service temperature in air

oC

- 180 to + 85

- 180 to + 85

- 180 to + 85

- 180 to + 85

- 180 to + 85

Thermal Conductivity with average specimen temperature 0oC to 10oC

DIN 52612

W/Mk

0.032 - 0.036

0.028 - 0.030

0.024 - 0.026

0.023 - 0.025

0.022 - 0.024

Approximate Water vapor permeability

DIN 53429

g/day m2

40

35

26

20

16

Water Absorption after immersion in water

DIN 53428

for 7 Days

vol. %

3

2.3

2.2

2

1.9

for 1 Year

vol. %

5

4

3.8

3.5

3.2

 

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