Overview
ABS extrusion refers to the industrial process of melting and shaping acrylonitrile butadiene styrene (ABS) thermoplastic through a die to create continuous profiles, sheets, or filaments. This method combines ABS's inherent toughness with the cost-efficiency of extrusion, making it ideal for mass production of complex cross-sections. As a terpolymer, ABS offers balanced properties from its three monomers: acrylonitrile provides chemical resistance, butadiene contributes impact strength, and styrene ensures rigidity and processability. Extruded ABS products account for approximately 30% of global ABS consumption, second only to injection molding applications.
Physical and Chemical Properties
Extruded ABS maintains the base material's notable characteristics: a tensile strength of 29-45 MPa, elongation at break of 10-50%, and Rockwell R hardness of 100-115. The extrusion process enhances molecular orientation in the flow direction, improving longitudinal mechanical properties. Chemically, extruded ABS demonstrates good resistance to diluted acids, alkalis, and alcohols but is soluble in esters, ketones, and some chlorinated hydrocarbons. UV exposure can cause yellowing unless stabilized with additives. The material's typical shrinkage rate of 0.5-0.7% must be accounted for in die design.
Main Applications
In automotive manufacturing, extruded ABS profiles are used for window seals, decorative trim, and bumper components due to their paintability and impact resistance. The construction industry employs ABS extrusions for weather-resistant pipe systems and electrical conduit. Consumer electronics benefit from ABS's EMI shielding capabilities when extruded with conductive fillers. Recent developments include co-extruded ABS/PC blends for high-temperature applications (up to 120°C) and foamed ABS extrusions for lightweight structural components in transportation.
Safety and Storage
Pre-drying ABS pellets at 80-85°C for 2-4 hours is critical before extrusion to prevent steam voids. Process temperatures typically range 190-240°C across barrel zones, with strict control needed to avoid thermal degradation above 260°C. Storage areas should maintain <50% relative humidity to prevent moisture absorption. Bulk bags of ABS pellets should be stacked no more than 3 layers high to prevent compaction. Processors must install spark detection systems in ductwork due to ABS's combustible dust potential.
B2B Procurement Guide
Industrial buyers should specify technical requirements including: MFI (typically 5-30 g/10min for extrusion), Izod impact strength (200-400 J/m), and any regulatory certifications (UL94, FDA, RoHS). For outdoor applications, request UV-stabilized grades with ≥5% titanium dioxide or equivalent protection. Leading global suppliers include LG Chem, Chi Mei Corporation, and SABIC, with regional producers offering competitive pricing in Asia. MOQs generally start at 1 metric ton for standard grades, with lead times of 2-6 weeks. Consider toll extrusion services for prototyping before committing to large-volume purchases.
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