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Extruded Foam Material

Updated: 2026-07-15

Overview

Extruded foam material, also known as extruded polystyrene foam (XPS), is a high-performance insulation and packaging material produced through an extrusion process. This process involves melting polystyrene resin and injecting it with a blowing agent, which expands to form a rigid foam with a closed-cell structure. The result is a material with excellent thermal insulation properties, moisture resistance, and structural integrity. Extruded foam is widely used in construction for insulation boards, in packaging for protective cushioning, and in automotive applications for lightweight components. Its versatility and durability make it a preferred choice for industries requiring high-performance materials.

Physical and Chemical Properties

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Extruded foam material is characterized by its closed-cell structure, which provides superior thermal insulation and moisture resistance. The material has a low thermal conductivity, typically ranging from 0.028 to 0.034 W/m·K, making it highly effective for insulation purposes. It also exhibits high compressive strength, often between 150-500 kPa, depending on the density. Chemically, extruded foam is inert and resistant to most solvents, acids, and alkalis. It does not absorb water, which prevents degradation and maintains its insulating properties over time. The material is also lightweight, with densities commonly ranging from 25 to 45 kg/m³, making it easy to handle and transport.

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Main Applications

Extruded foam material is extensively used in the construction industry for insulation boards in walls, roofs, and floors. Its thermal insulation properties help reduce energy consumption in buildings, while its moisture resistance prevents mold and mildew growth. In the packaging industry, extruded foam is used for protective cushioning of fragile items, such as electronics and glassware. The automotive industry also utilizes extruded foam for lightweight components, such as door panels and headliners, to improve fuel efficiency. Additionally, the material is used in marine applications for buoyancy aids and in agriculture for greenhouse insulation. Its versatility and performance make it suitable for a wide range of applications.

Safety and Storage

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Extruded foam material is generally safe to handle, but precautions should be taken to avoid dust inhalation during cutting or sanding. The material is non-toxic but may emit harmful fumes if burned, so it should be kept away from open flames and high temperatures. Proper ventilation is recommended when working with extruded foam in enclosed spaces. For storage, extruded foam should be kept in a cool, dry place away from direct sunlight and heat sources. Stacking should be done carefully to prevent deformation or damage to the sheets. Long-term exposure to UV light can degrade the material, so it should be covered or stored indoors when not in use.

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B2B Procurement Guide

When procuring extruded foam material, B2B buyers should consider several factors to ensure they receive the right product for their needs. Key specifications to verify include density, thermal conductivity, and compressive strength, as these properties determine the material's performance in specific applications. Fire resistance ratings are also important, especially for construction and automotive uses. Buyers should source from reputable manufacturers who provide quality certifications and technical support. Bulk purchasing can often lead to cost savings, but storage capacity and lead times should be considered. It's also advisable to request samples for testing before placing large orders to ensure the material meets the required standards.

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